@techreport{Weiland2026, type = {Working Paper}, author = {Weiland, Johannes}, title = {An integer programming formulation for scheduling double round-robin tournaments with coupled team pairs}, doi = {10.26127/BTUOpen-7346}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-73464}, year = {2026}, abstract = {In common double round-robin (2RR) tournaments, each team has one match per round and must meet each other team twice. Especially for larger numbers of participating teams, this requires numerous rounds, resulting in long travel distances for the teams. One possibility to relax this problem is to assign more than two teams to the same venue and increase the number of matches played at each round of the tournament. In this work, we consider a 2RR tournament, where pairs of teams are determined before the season. Then, in each round, either two of these pairs meet at the venue of one of the related teams and each team plays the two matches against the teams of the other pair, or the teams of a pair of play against each other. This format requires assigning the team pairs in parallel to the scheduling process. We derive a linear integer programming model to minimize the total travel distance of all teams, tackling both problems simultaneously, and incorporate restrictions regarding the distribution of the home-field advantages. Furthermore, we conduct an extensive computational study to examine its computational performance for instances of varying sizes.}, subject = {Integer optimization; Sport scheduling; Team pairs; Double round-robin tournament; Ganzzahlige Optimierung; Sportplanung; Teampaare; Doppelrundenturnier; Ganzzahlige Optimierung; Sportorganisation; Mannschaftssport; Programmierung}, language = {en} } @phdthesis{Radzewitz2026, author = {Radzewitz, Nina}, title = {Mentalit{\"a}tsstrukturen in Ostdeutschland : biografische Sinnkonstruktion zwischen Tradierung und Eigensinn : eine Grounded Theory Studie zu Impfentscheidungen ostdeutscher Pflegekr{\"a}fte in der Corona-Pandemie}, doi = {10.26127/BTUOpen-7341}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-73411}, school = {BTU Cottbus - Senftenberg}, year = {2026}, abstract = {Der Beginn der Corona-Pandemie 2020 f{\"u}hrte zu tiefgreifenden politischen Maßnahmen mit weitreichenden Eingriffen in das gesellschaftliche Leben. Die Auswirkungen gingen {\"u}ber eine Gesundheitskrise hinaus und wurden insbesondere in Ostdeutschland mit Erinnerungen an autorit{\"a}re Staatserfahrungen der DDR verkn{\"u}pft. Dies {\"a}ußerte sich in st{\"a}rkerer Kritik am staatlichen Handeln sowie einer ausgepr{\"a}gteren Impfablehnung im Vergleich zu Westdeutschland. F{\"u}r Gesundheitsberufe hatte dies besondere Folgen, da die einrichtungsbezogene Impfpflicht den Verbleib im Beruf an den Impfstatus koppelte. Die Impfentscheidung erhielt damit eine berufliche und existenzielle Dimension. Die Arbeit untersucht Pflegekr{\"a}fte mit DDR-Sozialisation und fragt, auf welche biografischen Erfahrungsmuster und Mentalit{\"a}tsstrukturen ihre Impfablehnung verweist und wie DDR-Sozialisation, Systemwechsel und Transformationsfolgen in ihren biografischen Sinnkonstruktionen fortwirken. Von Juni 2022 bis Februar 2024 wurden 15 autobiografisch-narrative Interviews mit ostdeutschen Pflegekr{\"a}ften gef{\"u}hrt, die die Corona-Impfung ablehnten. Die Auswertung erfolgte mittels Grounded Theory Methodologie (GTM). Als sensibilisierende Konzepte dienten zwei Thesen: (1) Persistenz-These: Fortwirken kollektiver Orientierungsmuster in mikrosozialen Kontexten. (2) Renitenz-These: in DDR-Erfahrungen wurzelnde Disposition subversiver Widerst{\"a}ndigkeit, sichtbar in einer „doppelten Handlungslogik" aus {\"a}ußerer Konformit{\"a}t und innerer Distanz. Die Analyse rekonstruiert f{\"u}nf Handlungslogiken des „Eigensinns": isolierend, adaptativ, distinktiv, widerst{\"a}ndig und emanzipatorisch. Diese zeigen sich stabil {\"u}ber die Biografien hinweg und werden unter Pandemiebedingungen handlungsleitend. Persistenzen {\"a}ußern sich im Fortbestehen tradierter Orientierungen (Familie, Region, Misstrauen gegen{\"u}ber Modernisierung). Renitenzen zeigen eine dispositionelle Widerst{\"a}ndigkeit gegen{\"u}ber staatlichen Steuerungen als Folge DDR-sozialisierter Distanzierungsmentalit{\"a}t. Zentral ist: Die Impfablehnung ist nicht prim{\"a}r medizinisch, sondern politisch motiviert - als Zur{\"u}ckweisung einer als {\"u}bergriffig und unglaubw{\"u}rdig erlebten staatlichen Kommunikation, die autorit{\"a}re biografische Erfahrungen reaktiviert. Vorgeschlagen wird das Konzept einer „Disposition persistierender Widerst{\"a}ndigkeit" als spezifisch ostdeutsche Auspr{\"a}gung dauerhafter Distanz gegen{\"u}ber staatlichen Vorgaben, die durch die Pandemie verst{\"a}rkt wurde. Mentalit{\"a}tswandel zeigt sich als tr{\"a}ge und nicht direkt steuerbar. Er setzt voraus, dass Biografie als Ergebnis selbstbestimmter und sozial anerkannter Handlungen erfahren wird - eine Erfahrung, die in vielen ostdeutschen Lebensl{\"a}ufen nur begrenzt vorhanden ist. Dies ist zentral f{\"u}r das Verst{\"a}ndnis aktueller gesellschaftlicher Dynamiken in Ostdeutschland.}, subject = {Ostdeutschland; Mentalit{\"a}t; Eigensinn; Pflegeberufe; Corona-Pandemie; East Germany; Mentality; Eigensinn; Nursing professions; COVID-19 pandemic}, language = {de} } @misc{WeinerAlMeklefGoetzeetal.2025, author = {Weiner, Hendrik and Al Meklef, Amira and G{\"o}tze, Valentin and Klimow, Alexandra and Richter, Klara and Rosshuber, Benjamin and Thiel, Raphael and Zopp, Sinja}, title = {COTTBUS:Labor I : WANN:ANDERS ; Initiativprojekte f{\"u}r Kultur, Gemeinwohl und Nachhaltigkeit}, issn = {2941-7406}, doi = {10.26127/BTUOpen-7210}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72107}, year = {2025}, abstract = {Wie urban, nachhaltig, divers, offen ist Cottbus? Welche Angebote und R{\"a}ume braucht die Stadt daf{\"u}r? Wie kommen die Bewohner:innen und die Aktiven der Stadt ins offene Gespr{\"a}ch? Heutige Stadtentwicklung erfordert R{\"a}ume und Formate der Eigeninitiative, der Gemeinwohlorientierung sowie des offenen, demokratischen Austauschs aller Beteiligten und Betroffenen. Welche Orte k{\"o}nnen wir daf{\"u}r wie nutzen? Wie k{\"o}nnen wir dort ein Miteinander organisieren? Das explorative Lehrprojekt COTTBUS:labor zielt darauf, sich diesen Fragen in kollaborativer Arbeitsweise gemeinsam anzun{\"a}hern. Daf{\"u}r reflektieren wir Theorien des Stadtmachens, sammeln Beispiele und erarbeiten in Teams eigene praxisbezogene Teilprojekte, die auf eine {\"o}ffentliche, kulturelle Innovationen zielen. Wir entwickeln eigene Vor-Ort-Formate des Austauschs, kooperieren mit Aktiven und vernetzen uns aktiv in der Stadt. Das Projekt soll die Grundlage legen, um einen dauerhaften studentisch betriebenen, transdisziplin{\"a}ren Austauschort in der Cottbuser Innenstadt zu etablieren, an dem mit den Querschnittsthemen Urbanit{\"a}t, Demokratie, Gemeinwohl und Nachhaltigkeit neue Ideen und Formate nutzerbasierter Stadtentwicklung erarbeitet und getestet werden.}, subject = {Engagement; Common good; City lab; Urbanity; Sustainability; Gemeinwohl; Stadtlabor; Urbanit{\"a}t; Nachhaltigkeit; Cottbus; Innenstadt; Stadtentwicklung; B{\"u}rgerbeteiligung; Actor-Network-Theory; Gemeinwohl}, language = {de} } @misc{WeinerBergmannDornbuschetal.2025, author = {Weiner, Hendrik and Bergmann, Sophie and Dornbusch, Alice and Kron, Joschua and Majid, Schene and Weihe, Fabian and Yasar, Selma}, title = {COTTBUS:Labor II : Stadtmachen und Co-Gestaltung in Theorie und Praxis}, doi = {10.26127/BTUOpen-7258}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72585}, year = {2025}, abstract = {Cottbus ist mit knapp 100.000 Einwohner:innen die zweitgr{\"o}ßte Stadt des Landes Brandenburg, und wichtiges Zentrum f{\"u}r seinen s{\"u}dlichen Teil sowie f{\"u}r die durch den Braunkohleabbau bekannte Region „Lausitz". Die Wiedervereinigung im Jahr 1990 bedeutete f{\"u}r die Region und Cottbus zun{\"a}chst De-Industralisierung, Stilllegung ganzer Firmen und Industrien, Berufswechsel und Arbeitslosigkeit f{\"u}r zahlreiche Einwohner:innen sowie den Wegzug vieler tausender junger Menschen und Familien. Heute soll Cottbus, den Konzepten der Stadtverantwortlichen nach, mit dem durch die Energiewende eingel{\"a}uteten erneuten Strukturwandel zur „Boomtown" werden: Nach den st{\"a}dtebaulichen Maßnahmen seit den 2000er Jahren, die die Innenstadt versch{\"o}nerten und als Wohn-, Arbeits- und Dienstleistungsort st{\"a}rkten, sollen nun finanzstarke Firmen, wissensbasierte Branchen und Forschungseinrichtungen Einzug in Cottbus halten. Damit sollen gut bezahlte Arbeitskr{\"a}fte und Fachkr{\"a}fte, einschließlich ihrer Familien, in die Stadt gelockt werden. Eine lebenswerte und lebendige Stadt ben{\"o}tigt daf{\"u}r auch offene und konsumfreie R{\"a}ume, in denen sich eine Stadtgesellschaft demokratische begegnen, austauschen, diskutieren und voneinander lernen kann. Anhand direkt umgesetzter Testprojekte arbeitete das Seminar „COTTBUS:labor" auf die schrittweise Schaffung eines solchen Raumes in der Cottbuser Innenstadt als Living Lab hin. Der Prozess der Gestaltung des Placemaking ist daf{\"u}r zentral. Ziel war es beispielhaft zu erkunden, wie R{\"a}ume organisiert werden k{\"o}nnen, um Austausch und Miteinander zu initiieren. Wie muss ein Ort daf{\"u}r beschaffen sein? Welche Rahmenbedingungen ben{\"o}tigt ein solcher Raum? Welche st{\"a}dtischen und zivilgesellschaftlichen Akteur:innen k{\"o}nnen Partner sein? Welche Formate, Angebote und Methoden ben{\"o}tigt eine Aneignung und Nutzung {\"o}ffentlicher innerst{\"a}dtischer R{\"a}ume durch die Cottbuser:innen? Hierf{\"u}r reflektierten die Studierenden Theorien des Stadtmachens, diskutierten Beispiele und erarbeiteten in Teams praxisbezogene Teilprojekte, in denen Methoden f{\"u}r Austausch und Co-Creation anwandt wurden. So entstanden Kontaktr{\"a}ume, in denen verschiedene Bev{\"o}lkerungsgruppen ihre W{\"u}nsche f{\"u}r Cottbus in vielf{\"a}ltiger Weise ausdr{\"u}ckten.}, subject = {Engagement; Kollaboration; Gemeinwohl; Stadtlabor; Urbanit{\"a}t; engagement; collaboration; Common good; City lab; urbanity; Cottbus; Innenstadt; Stadtentwicklung; Partizipation; Actor-Network-Theory; Gemeinwohl}, language = {de} } @misc{OPUS4-7326, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,12 (20.04.2026)}, doi = {10.26127/BTUOpen-7326}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-73269}, year = {2026}, abstract = {Neufassung der fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Soziale Arbeit in der Transformationsgesellschaft (M.A.) vom 17. April 2026}, language = {de} } @misc{OPUS4-7325, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,11 (20.04.2026)}, doi = {10.26127/BTUOpen-7325}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-73258}, year = {2026}, abstract = {Neufassung der fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Soziale Arbeit (B.A.) vom 17. April 2026}, language = {de} } @misc{OPUS4-7255, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,10 (20.04.2026)}, doi = {10.26127/BTUOpen-7255}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72556}, year = {2026}, abstract = {Neufassung der fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang World Heritage Studies (M.A.) vom 17. April 2026}, language = {de} } @misc{OPUS4-7254, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,09 (20.04.2026)}, doi = {10.26127/BTUOpen-7254}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72545}, year = {2026}, abstract = {Neufassung der fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Elektrotechnik (M.Sc.) vom 17. April 2026}, language = {de} } @phdthesis{Achenui2025, author = {Achenui, Robert Biketi}, title = {Integrating biodiversity conservation into environmental impact assessments : the case of the Campo Ma'an National Park, Cameroon}, doi = {10.26127/BTUOpen-7267}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72675}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Cameroon's forests are rich in endemic plant and animal species but remain among the most threatened ecosystems in Central Africa. To safeguard its forest heritage, the government resorted to the establishment of protected areas and relied on laws and other regulatory instruments to protect them. However, the integrity of protected areas such as the Campo Ma'an National Park is increasingly compromised by growing pressure to exploit natural resources nearby the park. Large-scale infrastructure projects like the Camvert agro-industrial project, the Kribi deep seaport, the Memve'ele hydropower dam including forests and mining concessions have intensified habitat loss thus accelerating biodiversity decline around the park. These projects have generated cumulative impacts on wildlife resources including rising poaching, illegal trade in endangered species, loss of indigenous farmlands, and increased risks of zoonotic diseases in surrounding communities. Amid these pressures, concerns have emerged regarding the effectiveness of conservation laws to preserve the park's ecological integrity. Balancing biodiversity conservation with economic development in the park's buffer zones remains a major governance challenge. This dissertation evaluates the implementation of Environmental and Social Impact Assessment in addressing conservation concerns linked to the Camvert agro industrial project and its effects on the Campo Ma'an National Park and adjacent communities. Legal analytical methods including mixed quantitative and qualitative approaches were employed for data collection, supported by field observations and semi-structured interviews. The research findings reveal that, development initiatives nearby the park including settlement expansion significantly contribute to forest degradation and biodiversity loss. Specifically, the Camvert project was implemented largely without the free, prior, and informed consent of local and indigenous communities as required by Article 20(1) of the 2013 EIA law in Cameroon. The study further indicates shortcomings in the government's compliance with international environmental obligations. Nonetheless, conservation actors including WWF and the African Wildlife Foundation have strengthened anti-poaching efforts and supported community livelihood initiatives. The research concludes that integrating indigenous rights, local knowledge systems and participatory land-use planning into EIA processes is essential for sustainable biodiversity conservation. Strengthening alternative livelihoods, ecotourism, and environmental education will enhance protection of the Campo Ma'an National Park while supporting inclusive development and poverty reduction in Cameroon.}, subject = {Biodiversity; Conservation; ESIA; Indigenous peoples; Cameroon; Biodiversit{\"a}t; Naturschutz; Indigene V{\"o}lker; Kamerun; Kamerun (S{\"u}dwest); Umweltvertr{\"a}glichkeitspr{\"u}fung; Sozialvertr{\"a}glichkeitspr{\"u}fung; Integrierter Naturschutz; Umweltschutz}, language = {en} } @article{SohailRiedelBoellmannetal.2026, author = {Sohail, Noman and Riedel, Ramona and B{\"o}llmann, J{\"o}rg and Nawaz, Muhammad Saqib and Martienssen, Marion}, title = {Exploring the influence of quorum quenching (QQ) on EPS production and biofilm dynamics across different polymeric membranes}, series = {Polysaccharides}, volume = {7}, journal = {Polysaccharides}, number = {2}, publisher = {MDPI}, address = {Basel}, issn = {2673-4176}, doi = {10.3390/polysaccharides7020042}, year = {2026}, abstract = {Biofouling remains a critical challenge in membrane bioreactors (MBR), which is primarily caused by the production of extracellular polymeric substances (EPS) as an initial step in biofilm formation. This still limits their widespread application in wastewater treatment. In the past decades, much research has been carried out to understand and consequently reduce biofouling in MBR. More recent studies have focused primarily on inhibiting the release of EPS by applying quorum quenching (QQ) to control biofouling in MBR. This study presents the first investigation of the QQ potential of Rubellimicrobium mesophilum and its effects on biofilm inhibition by EPS reduction, which is demonstrated for MBR operated with submerged flat sheet (PTFE, PS) and hollow fibre polyvinylidene fluoride (PVDF) membranes operated in parallel for 114 days. The QQ effect has a significant impact on the reduction of biofilm thickness on PTFE membranes by 45\% and on PS membranes by about 47\% respectively. Additionally, the performance of PVDF was improved by 287.5\%. Similarly, the total protein concentration on the PTFE membranes was reduced by 57\%, while on the PS membranes, the reduction was 78\%. In mixed liquor, protein reduction was 55\%, indicating its effectiveness in controlling biofouling over extended operation. The biofilm formation was monitored by measuring the biofilm thickness via fluorescence microscopy and by analyzing the protein and sugar content of the developing biofilm and of the mixed liquor. All parameters proved a decreasing biofilm formation with increasing amounts of entrapped QQ bacteria, while the removal efficiency of organic compounds and ammonia remained similar between all MBRs.}, subject = {Membrane bioreactor (MBR); Quorum Sensing (QS); Quorum Quenching (QQ); CEBs 31 (Cell entrapping beads); Polytetrafluoroethylene (PTFE)}, language = {en} } @phdthesis{Rode2026, author = {Rode, Robert}, title = {Redefining conservation in world society : indigenous peoples' challenges to green colonialism in the UNESCO World Heritage regime}, doi = {10.26127/BTUOpen-7339}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-73392}, school = {BTU Cottbus - Senftenberg}, year = {2026}, abstract = {This study explores how the globalisation of Indigenous human rights is reshaping nature conservation within the UNESCO World Heritage regime and challenging the enduring legacies of "green colonialism." Building on environmental-historical accounts of fortress conservation and on Indigenous critiques of exclusionary protected-area politics, the study expands Thomas Schmitt's cultural-geographic approach to UNESCO World Heritage by including the perspective of a global nature conservation regime in which competing conservation paradigms are negotiated. It asks (1) how the global institutionalisation of Indigenous rights norms, especially the 2007 UN Declaration on the Rights of Indigenous Peoples, contests exclusionary conservation practices in World Heritage, and (2) how paradigm competition transforms power relations between Indigenous peoples and the institutional complex of States Parties, Advisory Bodies, and the World Heritage Centre. The analysis combines world society theory, figurational sociology, and decolonial approaches to trace shifting dependencies, normative isomorphism, and the coloniality of knowledge in World Heritage decision-making. Empirically, the dissertation employs a historical and regional comparative approach across four sites: Man{\´u} National Park (Peru), Tongariro National Park (Aotearoa/New Zealand), Lake Bogoria (Kenya), and Pimachiowin Aki (Canada). A qualitative content analysis of official UNESCO records from 1987 to 2023 (including World Heritage Committee decisions, Advisory Body evaluations, State of Conservation reports, nomination files, and management plans) is conducted. Findings show an uneven institutionalisation of Indigenous rights across cases and over time. While formal references to participation and Indigenous human rights have expanded, implementation often remains partial, reflecting a persistent decoupling between normative commitments and conservation practice. Nevertheless, the regime displays limited but notable openness to human rights-based and inclusive conservation, particularly when Indigenous actors and human rights institutions intervene. Overall, the study argues that the World Heritage regime has become a contested platform for addressing historical injustices and that its legitimacy increasingly depends on Indigenous-led approaches to the designation and management of World Heritage properties. Methodologically, it demonstrates how UNESCO's repository of official records can be used to reconstruct organisational "documentary realities" and trace institutional change comparatively.}, subject = {UNESCO World Heritage regime; Indigenous peoples; Green colonialism; Nature conservation; World society; UNESCO-Welterbe-Regime; Indigene V{\"o}lker; Gr{\"u}ner Kolonialismus; Naturschutz; Weltgesellschaft}, language = {en} } @techreport{Schiffner2025, type = {Working Paper}, author = {Schiffner, Johanna}, title = {Die Bedeutung von M{\"a}nnlichkeitsanforderungen im Kontext (extrem) rechter Gewalt in der Transformationszeit in Ostdeutschland : eine genderreflektierende Analyse der autobiografischen Auseinandersetzung von Hendrik Bolz mit der Sozialisation in den „Nullerjahren"}, doi = {10.26127/BTUOpen-7314}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-73143}, year = {2025}, abstract = {Diese Masterarbeit wurde als Qualifikationsarbeit f{\"u}r den M. A. Soziale Arbeit an der BTU Cottbus-Senftenberg eingereicht und untersucht die Rolle von M{\"a}nnlichkeitsanforderungen in (extrem) rechten Gruppenzusammenh{\"a}ngen. Grundlage ist eine genderreflektierende Analyse des autobiografisch gepr{\"a}gten Romans „Nullerjahre. Jugend in bl{\"u}henden Landschaften" von Hendrik Bolz. Im Mittelpunkt steht die Frage nach der Bedeutung von M{\"a}nnlichkeit in Bezug auf die Hinwendung in extrem rechte Gruppenzusammenh{\"a}nge mit einem Fokus auf die m{\"a}nnliche Sozialisation in Ostdeutschland in den sogenannten Baseballschl{\"a}gerjahren. Die Analyse orientiert sich an der Grounded Theory. Theoretisch erfolgt eine Orientierung an Ans{\"a}tzen der kritischen M{\"a}nnlichkeitsforschung, welche mit historischen, sozialr{\"a}umlichen sowie gesellschaftlichen Kontextfaktoren der Nachwendezeit verkn{\"u}pft werden. Im Ergebnis er{\"o}ffnet die Analyse einen differenzierten Blick auf rechte Jugendgewalt: Sie betrachtet die Anschlussf{\"a}higkeit an (extrem) rechte Gruppierungen in der Transformationszeit in Ostdeutschland aus dem Zusammenspiel von m{\"a}nnlicher Sozialisation, kollektiver Zugeh{\"o}rigkeit und spezifischen sozio{\"o}konomischen, kulturellen und sozialen Bedingungen. Die Arbeit leistet einen Beitrag zur geschlechterreflektierenden Forschung zu Rechtsextremismus, indem sie verdeutlicht, dass M{\"a}nnlichkeitsanforderungen und hypermaskuline Selbstinszenierungen zentrale Orientierungspunkte innerhalb (extrem) rechter Gruppenzusammenh{\"a}nge darstellen. Sie betont dar{\"u}ber hinaus die Bedeutung sozialr{\"a}umlicher Verankerungen und langfristiger habitueller Pr{\"a}gungen f{\"u}r Radikalisierungs- und Distanzierungsprozesse und markiert damit pr{\"a}ventive Ansatzpunkte f{\"u}r sozialp{\"a}dagogische Handlungsfelder.}, subject = {M{\"a}nnlichkeit; Rechtsextremismus; Ostdeutschland; Nullerjahre; Gewalt; Masculinity; Right-wing extremism; East Germany; 2000s; Violence; M{\"a}nnlichkeit; Rechtsradikalismus; Gewalt; Transformation}, language = {de} } @article{SchowarteRiedelFischeretal.2026, author = {Schowarte, Julia and Riedel, Ramona and Fischer, Tomas and Helle, Sven and Martienssen, Marion and Arellano-Garcia, Harvey}, title = {Synergistic enhancement of PFOA and 6:2-FTAB photodegradation using Au/Y-doped TiO2 nanocatalysts}, series = {Chemical Engineering Journal Advances}, volume = {26}, journal = {Chemical Engineering Journal Advances}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2666-8211}, doi = {10.1016/j.ceja.2026.101121}, year = {2026}, abstract = {Efficient degradation of perfluoroalkyl substances (PFAS) requires photocatalysts capable of promoting strong CF bond cleavage and selective interfacial charge transfer. In this proof-of-concept-study, a dual-doped TiO2 nanophotocatalyst (Au2/Y5/P25) was synthesized by combining gold (Au) nanoparticles and yttrium (Y) dopants to enhance charge separation and reactive oxygen species (ROS) generation. Structural characterization supported Au deposition on the TiO2 surface and Y incorporation into the lattice, accompanied by a slight bandgap narrowing. Under UV irradiation in aqueous solution (unbuffered pH 5.8, room temperature) the nanophotocatalyst exhibited distinct degradation pathways for 1000 μg L-1 of two representative PFAS, perfluorooctanoic acid (PFOA) and Capstone B (6:2 FTAB), reflecting environmentally prevalent groups. PFOA underwent 99 \% degradation within 100 min via a stepwise CF2-cleavage mechanism, generating a sequence of perfluorocarboxylic acids down to perfluorobutanoic acid (PFBA), consistent with enhanced electron-hole separation. In contrast, Capstone B showed rapid, single-step S-N bond cleavage to 6:2 perfluorooctanesulfonic acid (6:2 PFOS), primarily driven by hole- and •OH-mediated oxidation under oxygen-rich conditions. This process achieved 96 \% degradation within 20 min but did not proceed to further defluorination, indicating oxidative limitations. Dissolved oxygen analysis revealed efficient electron utilization and sustained oxidative turnover without excessive oxygen depletion. The findings demonstrate that Au/Y co-doping promotes selective PFAS activation, enabling rapid precursor oxidation while exposing the kinetic limits of secondary C-F bond cleavage. These discoveries offer new insights into the design of plasmonic-rare-earth-modified TiO2 photocatalysts for efficient PFAS degradation through interface-driven oxidation pathways.}, subject = {Nanoparticles; PFAS; PFOA Photocatalysis; TiO2}, language = {en} } @misc{OPUS4-7253, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,08 (24.03.2026)}, doi = {10.26127/BTUOpen-7253}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72532}, year = {2026}, abstract = {Beitragsordnung der Studierendenschaft der Brandenburgischen Technischen Universit{\"a}t Cottbus-Senftenberg f{\"u}r das Wintersemester 2026/27 vom 17. M{\"a}rz 2026}, language = {de} } @phdthesis{FloresdeLeon2026, author = {Flores de Le{\´o}n, Rafael Maximiliano}, title = {Notions of social cohesion in the making of World Heritage Cities : discursive repertoires articulating social cohesion notions in the UNESCO documents framing the nomination and management of World Heritage Cities inscribed between 2017 and 2021}, doi = {10.26127/BTUOpen-7310}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-73109}, school = {BTU Cottbus - Senftenberg}, year = {2026}, abstract = {UNESCO guidelines for the management of historic cities and World Heritage (WH) sites have pointed out that urban heritage can foster social cohesion. Scholars have also suggested that heritage has the potential to (positively) influence social cohesion. However, it remains unclear how this outcome can be achieved. A central challenge is that social cohesion is a contested and mouldable concept that is subject to interpretations and can encompass diverse notions. Hence, before exploring how urban heritage can contribute to social cohesion, it was necessary to investigate what social cohesion can mean in the context of urban heritage. Using discursive institutionalism as a theoretical foundation and integrating perspectives from critical heritage studies, this research examines how social cohesion notions are articulated in discursive repertoires in UNESCO documents that framed the nomination and management of urban areas inscribed as WH between 2017 and 2021. The analyses and discussions of the investigation were structured using a conceptual framework that integrates eleven recurrent notions considered part of or necessary for social cohesion - which in this research are called constituents of the concept - and three typologies into which social cohesion constructs can be grouped: relational, ideational, and distributive. This research demonstrates that the analysed UNESCO documents articulate multiple notions related to the constituents and typologies of social cohesion. These notions are articulated in various discursive repertoires and provide opportunities to use WH processes to promote social objectives. As for the relational typology, which focuses on fostering and maintaining social relations, the UNESCO documents articulate notions that encourage interaction and enable the regulation and protection of social dynamics. Turning to the ideational typology of social cohesion, which focuses on reinforcing identities, the processes for the identification of Outstanding Universal Values and designation of WH cities move towards critical approaches that acknowledge the power of heritage to shape the acceptance and othering of the many groups converging in cities. In this way, WH can help negotiate and promote intragroup and intergroup social cohesion in cities. Finally, regarding the distributive typology of social cohesion, which aims to address disparities, although the UNESCO guidelines and heritage experts acknowledge unwanted impacts of WH designations related to inequality, such as gentrification and commodification processes, recommendations or statements enabling the use of WH to recognise and address disparities are rarely articulated.}, subject = {Social cohesion; Urban heritage; World Heritage; Discursive institutionalism; Critical heritage studies; Sozialer Zusammenhalt; St{\"a}dtisches Erbe; Welterbe; Diskursiver Institutionalismus; Kritische Kulturerbe-Forschung; Welterbe; Stadt; Gemeinsinn; Gruppenkoh{\"a}sion; Institutionalismus; Diskurs}, language = {en} } @techreport{OPUS4-7290, type = {Working Paper}, title = {My Wilderness II: selected essays in creative writing}, editor = {Rodr{\´i}guez Mansilla, Francesc Gabriel and Schwarz, Astrid}, issn = {2747-8262}, doi = {10.26127/BTUOpen-7290}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72908}, year = {2026}, abstract = {The course "How to talk about "nature"?" is offered every winter semester to an average of 125 students at the Brandenburg University of Technology Cottbus-Senftenberg. As part of the course, students have the opportunity to critically question and rethink the concept of "nature" and some of its derivative notions, such as "nature as wilderness." After examining how this notion has led to an artificial separation between humanity and a supposedly "human-free nature," students recognize the limitations of this duality. Through an in-depth exploration of the historical and cultural roots of this notion of "nature as wilderness", students are then invited to share their experiences of "wilderness" that challenge this duality. Here we have compiled a selection of their responses from the winter semesters 20/21 and 21/22.}, subject = {Creative writing; Naturecultures; Environmental history; Anthropogenic influence; Environmental ethics; Kreatives Schreiben; Naturkulturen; Umwelt Geschichte; Anthropogener Einfluss; Umweltethik; Kreatives Schreiben; Umwelt; Geschichte; Anthropogener Einfluss; Umweltethik}, language = {en} } @article{SohailMartienssen2026, author = {Sohail, Noman and Martienssen, Marion}, title = {Mechanistic insights into quorum quenching-mediated control of EPS and biofilm formation in submerged MBR}, series = {Molecules}, volume = {31}, journal = {Molecules}, number = {6}, publisher = {MDPI}, address = {Basel}, issn = {1420-3049}, doi = {10.3390/molecules31061022}, year = {2026}, abstract = {Quorum quenching (QQ) is a promising biological approach that has the potential to control membrane biofouling. However, the implementation of the QQ membrane bioreactor still requires a more systematic and comprehensive understanding, including the selection of membrane materials, the determination of the optimal QQ bacterial dosage, and the use of appropriate media for the immobilization of QQ bacteria, all of which are important to ensure long-term operation. The present study investigated the impact of QQ bacteria on biofilm formation across different polymeric membranes. These include flat sheet membranes, Polytetrafluoroethylene (PTFE), Polysulfones (PSs), and hollow-fibre polyvinylidene difluoride (PVDF) membranes. It also evaluated biofilm development, membrane filtration performance, extracellular polymeric substance (EPS) production, and sludge floc properties, which were characterized using fluorescence microscopy. The results revealed that QQ intervention markedly suppressed quorum sensing (QS), leading to a pronounced, dose-dependent reduction in biofilm thickness, membrane fouling, EPS production and sludge floc size. Biofilm thickness was reduced by 63.5\% on PTFE and 55.4\% on PS membranes, accompanied by a notable reduction in EPS protein and polysaccharides, thereby weakening the biofilm formation and enhancing membrane filterability. Therefore, the permeability performance of the PVDF membrane improved by 338.2\%. Furthermore, sludge settleability was enhanced, and floc size was reduced, resulting in the mitigation of biofilm formation without impacting pollutant degradation. These findings elucidate the material-dependent and dose-responsive mechanism by which QQ regulates EPS synthesis and biofilm formation in MBR.}, subject = {Membrane bioreactor (MBR); Polytetrafluoroethylene (PTFE); Polysulfones (PSs); Extracellular polymeric substances (EPSs)}, language = {en} } @phdthesis{Saadi2025, author = {Saadi, Ibtissam}, title = {Improving facial expression recognition in realistic environments using deep learning approaches}, doi = {10.26127/BTUOpen-7317}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-73178}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Facial expressions are vital channels of non-verbal communication, conveying rich information about emotional and cognitive states in social interactions. Enabling intelligent systems to automatically recognize these expressions makes Facial Expression Recognition (FER) a key task in affective computing. Despite significant progress, existing FER methods still face limitations in effectively and efficiently recognizing facial expressions under real-world conditions, such as those found in driving environments or dynamic, in-the-wild scenarios. This thesis addresses these challenges by proposing several novel deep learning-based models that improve the performance, robustness, and efficiency of FER systems. To this end, several contributions are presented. The work begins with a comprehensive review of FER, highlighting persistent challenges in the field, particularly within the driving context. Subsequently, DFER-GCViT, a Vision Transformer-based architecture tailored for driver FER, is introduced to improve recognition accuracy under conditions of occlusion, pose variation, and lighting changes. To enhance computational efficiency, ShuffViT-DFER is proposed, a lightweight hybrid model that combines convolutional and transformer-based pretrained networks. Furthermore, multimodal approaches are explored using Vision-Language Models (VLMs), particularly CLIP. CLIVP-FER is developed to integrate visual and textual features, enhancing semantic understanding in the driving context. The research then shifts toward general dynamic FER, leveraging parameter-efficient fine-tuning and temporal modeling of CLIP, and maintains strong performance with reduced computational cost through the proposed PE-CLIP. Extensive experiments on benchmark datasets demonstrate the effectiveness of the proposed models across diverse and challenging conditions. The results underscore the importance of optimizing architectures, incorporating multimodal cues, and enabling lightweight FER systems suitable for practical deployment.}, subject = {Gesichtserkennung; Emotionserkennung; FER; Dynamische FER; Deep learning; Facial expression recognition; Emotion recognition; Driving context; Dynamic FER; Gesichtserkennung; Deep Learning; Autofahren; Modellierung; Multimodales System}, language = {en} } @misc{OPUS4-7252, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,07 (25.03.2026)}, doi = {10.26127/BTUOpen-7252}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72529}, year = {2026}, abstract = {Satzung zur Vergabe von Stipendien nach dem Stipendienprogramm-Gesetz (Deutschlandstipendien) vom 10. M{\"a}rz 2026}, language = {de} } @phdthesis{Acquah2025, author = {Acquah, Michael}, title = {Tracking electricity access for sustainable rural electrification management : the case of mini-grid experience in Pediatorkope Island, Ghana}, doi = {10.26127/BTUOpen-7282}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72822}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {The principal aim of the study was to develop people-centered strategies for sustainable management of rural electrification that is based on the experience of a rural livelihood in Ghana. The concurrent mixed methods were used to collect both qualitative and quantitative data through interviews with sector experts, key informants and community members regarding the delivery, management and usage of electricity. The hybrid mini-grid electricity supply in Pediatorkope, an Island community in Ghana, was adopted as a case of rural electrification for this study. Seven experts (including heads of institutions, agencies and departments), seven community participants and 120 heads of households were surveyed through the administration of semi-structured questionnaire to retrieve the requisite data. Qualitative data was analyzed thematically with 2019 NVivo. Both descriptive and inferential statistics were used to analyze the quantitative data in this study. Analysis such as central tendency including mean, median, maximum, minimum and percentiles were covered. Multi-dimensional analysis, principal component analysis, bivariate analysis standard deviations and frequency analysis were also carried out to ascertain the details of tiers of access to electricity, demographic characteristics of participants and attributes of electricity supply. The results reveal four level of institutional engagement and five stages of policy and regulatory growth from the colonial past to the sustainable era that have shaped the development of rural electrification in Ghana. Two categories of uses of electricity were identified as basic and regular services. Furthermore, exchange value, use value and sign values were identified as important value strands for application in rural electrification. Even though the mini-grid system was designed to allow Tier 5 of electricity access, the quantitative results revealed that the highest experience of access in the community was Tier 4 with the overall access rate of 35\%. Supply side attributes such as capacity of supply, availability of supply and reliability affected access and usage of electricity in the community. Demand side issues identified were misuse of appliance and tariffs misapplication due to non-management of energy culture transition and characteristic additive nature of electricity demand and usage. The various findings based on the experience of electricity usage were consolidated in a proposed model known as multi-value mini-grid to address the identified challenges associated with the use of electricity services from the mini-grid. The multi-value mini-grid, as the name suggests, provides more than one value in a simplified model to meet the different energy needs of higher population of end-users with multiple streams of revenue generation, which enhances the financial feasibility of mini-grids and the livelihoods of the people.}, subject = {Rural electrification; Mini-grid; Sustainable livelihoods; Nationally determined contributions; Pediatorkope Island; L{\"a}ndliche Elektrifizierung; Mini-Grid; Nachhaltige Lebensgrundlagen; National festgelegte Beitr{\"a}ge; Ghana; Ghana; L{\"a}ndliche Entwicklung; Elektrifizierung; Nachhaltigkeit}, language = {en} } @phdthesis{Putze2026, author = {Putze, Philip}, title = {Screw dislocation-driven growth of 2D transition metal dichalcogenide nanostructures by chemical vapour transport}, doi = {10.26127/BTUOpen-7302}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-73028}, school = {BTU Cottbus - Senftenberg}, year = {2026}, abstract = {Screw dislocation-driven growth of nanostructures of two-dimensional (2D) transition metal dichalcogenides (TMDs) can feature special physical behaviour like unconventional superconductivity and Moir{\´e} excitons. Three of the outstanding representatives of TMDs are WSe₂, MoSe₂, and WS₂ as they can exhibit intriguing new size- and shape-depended properties compared to its bulk counterpart. Crystal growth control in nanostructures is central for exploiting their structure-related properties. However, bottom-up syntheses of 2D TMDs usually contain 'trial and error' approaches. This work addresses the rational synthesis planning and realizing for the binary systems W:Se, Mo:Se and W:S to achieve nanosized flakes by chemical vapor transport (CVT). For that purpose, key parameters for the CVT were modelled based on thermodynamic datasets and transferred into actual experiments. Regarding WSe₂, crystal growth by CVT under addition of SeCl₄ succeeds for bulk-WSe₂ from 900 °C to 820 °C with a dwell time of 72 h. High-crystalline, right-handed spirals with step heights of around 10 nm are obtained from 850 °C to 800 °C with a dwell time of 60 min, while left-handed spirals occur from 915 °C to 860 °C. These characteristics are linked to theoretical considerations. The terrace widths correlate linearly to the supersaturation condition during the crystal growth, which is represented by the temperature-depended equilibrium constant. Chirality of WSe₂ with screw dislocation-driven growth was investigated by circular-polarised Raman Spectroscopy and showed an intensity increase up to 29 \% for the E¹₂ᶢ mode. For MoSe₂, the primary choice of substrate dictates the resulting crystal shapes. Under essentially identical growth conditions, i.e., 710 °C → 685 °C and a dwell time of 30 min, SiO₂@Al₂O₃(0001) substrates can be used for the controlled precipitation of both hexagonally and triangular shaped nano-MoSe₂. Compared to that, SiO₂@Si(100) substrates enable the growth of predominantly triangular crystals. Individual steps vary from 0.9 nm to 2.9 nm. Nano-MoSe₂ exhibits a twist angles sequence of ca. 5°. Additionally, a twist angle of 19° can be obtained with respect to the [010] zone axis. Supertwisted WS₂ flakes occur from 810 °C to 770 °C under addition of WCl₄(s) and a dwell time of 40 min, while the bulk counterpart in the 2H modification can be obtained from 1030 °C to 950 °C with a dwell time of 96 h. Tailored non-Euclidean Si(100) substrate surfaces with seeded SiO₂ nanoparticles induce WS₂ spirals with twist angles of - 19° for right-handed spirals with individual step heights in the monolayer range.}, subject = {Screw dislocation; 2D materials; CVT; Rational synthesis; Chiral nanostructures; Schraubenversetzung; 2D Materialien; Rationale Synthese; Chirale Nanostrukturen; Schraubenversetzung; Zweidimensionales Material; Chiralit{\"a}t ; {\"U}bergangsmetalldichalkogenide; Syntheseplanung; Wolfram; Molybd{\"a}n; Selen; Schwefel}, language = {en} } @article{AlipoursarbaniTidemanLopezetal.2026, author = {Alipoursarbani, Mozhdeh and Tideman, Jeroen and L{\´o}pez, Mitzy and Abendroth, Christian}, title = {Bioaugmentation in anaerobic digesters : a systematic review}, volume = {19}, publisher = {BMC}, address = {London}, issn = {2731-3654}, doi = {10.1186/s13068-026-02746-6}, year = {2026}, abstract = {Bioaugmentation, the intentional introduction of specific microorganisms into anaerobic digestion (AD) systems, has shown promise in enhancing methane production and in mitigating stressful conditions, particularly in systems operating below optimal performance. This review presents a systematic literature review (SLR) of research on bioaugmentation in AD. This review identified and analysed studies meeting predefined eligibility criteria through a structured methodology involving research protocol, search, appraisal, synthesis, analysis, and reporting. A notable innovation of this review is its comprehensive critical comparison of different controls used in bioaugmentation studies, which has been inadequately addressed in previous literature. To facilitate the functional understanding, strains for bioaugmentation were grouped into the four phases of anaerobic digestion (hydrolysis, acidogenesis, acetogenesis and methanogenesis). A highly diverse set of microbes has been described for bioaugmentation, especially from the families Clostridiaceae, Pseudomonadaceae and Syntrophomonadaceae. Most works are related to hydrolysis. The few works that address acidogenesis are mostly related to dark fermentation. Several studies used methanogenic archaea as well as syntrophic acetate oxidising bacteria, despite the difficulties in culturing them. On the other hand, studies applying strains for acetogenesis were largely underrepresented. Especially works on syntrophic propionate and butyrate oxidation (SPO and SBO) were missing.}, subject = {Bioaugmentation; Anaerobic digestion; Biogas plants; Microorganisms; Microbiomes}, language = {en} } @article{SchwickertGrenzdoerffer2026, author = {Schwickert, Samantha and Grenzd{\"o}rffer, Sinje}, title = {Cycles of (in)visibility : evolvements, constancies, and frictions of menstrual cycles at work}, series = {Frontiers in Sociology}, volume = {11}, journal = {Frontiers in Sociology}, publisher = {Frontiers}, address = {Lausanne}, issn = {2297-7775}, doi = {10.3389/fsoc.2026.1642858}, year = {2026}, abstract = {Around half of all working bodies experience a menstrual cycle for a significant part of their (working) lives, followed by (peri-)menopause. Yet, the implications of cyclic embodiment and bodily transitions remain well-concealed, stigmatized, and insufficiently integrated into work organization. Theoretically positioned within critical menstruation research with focus on work organization, our study enhances existing research by offering a cyclic perspective which considers the whole menstrual cycle, including changing symptoms over time and the transition to (peri-)menopause. For this purpose, we carried out a longitudinal study (2021-2025) to explore and evaluate the effects of the menstrual cycle on the professional lives of women and people with menstrual cycles (WPMC) in Germany. Insights from qualitative interviews and action research workshops during this time period are supplemented by expert perspectives from Germany, Belgium, Ireland and Spain. The results are organized alongside a differentiation between three spheres (1) individual sphere, (2) organizational sphere, (3) societal sphere. We find that growing awareness, generational shifts, and feminist practices are slowly opening spaces for cycle-sensitive and more caring work cultures, despite ongoing stigma, resistant structural barriers, and anticipated backlashes. Moreover, this change is largely individualised, which risks burdening WPMC with the additional work of finding solutions for cyclic symptoms within ongoing linear, meritocratic work structures. By changing the default linear perspective to a cyclic one, we frame the menstrual cycle as a collective workplace issue rather than an individual inconvenience or problem and advocate for policy reforms. This perspective foregrounds a more holistic understanding of work organization that accounts for diverse and changing body realities.}, subject = {Critical menstruation studies; Feminism; Gender; Menstrual Cycle; Menstruation and work}, language = {en} } @misc{OPUS4-7251, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,06 (09.03.2026)}, doi = {10.26127/BTUOpen-7251}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72511}, year = {2026}, abstract = {Bekanntmachung {\"u}ber die Aufhebung von Studieng{\"a}ngen - Bauen und Erhalten (M.Sc.) - Elektrotechnik (M.Eng.) - K{\"u}nstliche Intelligenz Technologie (B.Sc.) - K{\"u}nstliche Intelligenz Technologie (M.Sc.) - Leichtbau und Werkstofftechnologie (M.Sc.)}, language = {de} } @techreport{OPUS4-7289, type = {Working Paper}, title = {Bazar Abbas : a recovery lab for Port Said ; built heritage, collective memory, and urban rehabilitation}, editor = {Zarrin Ghalam, Sepideh}, isbn = {2941-7406}, doi = {10.26127/BTUOpen-7289}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72895}, year = {2026}, abstract = {This publication documents the processes and findings of the 'Bazar Abbas: Recovery Lab of Port Said', a pilot initiative addressing the deterioration of Port Said's historic urban landscape. By presenting these results, the publication aims to raise awareness of the city's urban heritage and stimulate a broader discussion on sustainable recovery strategies. Founded as a cosmopolitan hub after the construction of the Suez Canal, Port Said's dual urban structure represents a distinctive architectural and urban heritage. Founded as a cosmopolitan hub after the construction of the Suez Canal, Port Said's dual urban structure represents a distinctive, yet vulnerable, architectural and urban heritage. The city's urban fabric was profoundly shaped by successive wars and forced displacement following the post-colonial transition. Despite the profound impact of these events, however, Port Said has lacked a comprehensive recovery framework to address the resulting damage. Instead, the historic core has faced institutional neglect, with its heritage caught between shifting priorities and chronic underfunding. Today, the city is grappling with historical trauma and physical decay, as well as a development strategy that disconnects heritage from contemporary growth. In response, the Recovery Lab acts as a platform for exploration, bridging the gap between academic research and professional practice. Using the Bazar Abbas building as a living laboratory, the project has evolved from theoretical study to the implementation of site-specific pilot interventions. The Lab has tested a multidisciplinary toolbox ranging from 3D laser scanning to participatory engagement to demonstrate how tangible recovery can be achieved despite limited resources and archival gaps. Ultimately, this volume argues that cities with complex, layered histories require an incremental, tactical approach to rehabilitation. This methodology directly addresses intertwined challenges, including restricted funding, fragmented decision-making, and administrative hurdles. By treating heritage as a vital social asset and adopting a learning-by-doing approach, the Lab overcomes institutional paralysis to deliver results. This framework offers a resilient regeneration alternative that is grounded in the practical realities of Port Said and the collective agency of its residents.}, subject = {Port Said; Bazar Abbas; Stadterneuerung; Gemeinschaftsorientierte Sanierung; Urban recovery; Urban narratives; Community-centred rehabilitation; Port Said; Stadtsanierung; Stadtkern; St{\"a}dtebau; Geschichte; Urbane Narrative}, language = {en} } @phdthesis{Alfeus2026, author = {Alfeus, Martha}, title = {Rangeland improvement and biodiversity conservation through bush encroachment control in Southern Africa, Namibia}, doi = {10.26127/BTUOpen-7306}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-73064}, school = {BTU Cottbus - Senftenberg}, year = {2026}, abstract = {Biodiversity underpins ecosystem stability, resilience, and the delivery of ecological services essential to human well-being. However, global biodiversity is declining at unprecedented rates due to land-use change, habitat degradation, and climate variability. In arid and semi-arid savannahs, where ecosystems are constrained by resource scarcity these pressures intensify through bush encroachment, the densification of woody vegetation displacing grasslands. This shift undermines rangeland productivity, alters vegetation structure, and reshapes biodiversity patterns. While vegetation and livestock responses are well-studied, implications for invertebrate biodiversity, particularly arthropods as functionally critical taxa, remain underexplored. This thesis bridges these gaps via three interconnected objectives linking data integrity, ecological patterns, and management interventions in Namibian savannahs. The first assesses arthropod biodiversity data quality across global platforms (iNaturalist, GBIF) and the Namibian Biodiversity Database. Recognition (species-level identifications) and completeness (species coverage) vary markedly by arthropod order, influenced by detectability, morphology, and familiarity. Global datasets provide baselines, but national databases are vital for accuracy, advocating integrated frameworks to strengthen monitoring, conservation, and citizen science. The second study investigates effects of dominant encroaching shrubs, Dichrostachys cinerea, Senegalia mellifera, and Terminalia sericea on arthropod communities across canopy, aerial, and ground strata in wet/dry seasons. Sampling via pitfall, pan, and beating traps revealed shrub-specific compositional shifts, driven by canopy taxa. S. mellifera favoured omnivore guilds and D. cinerea favoured phytophagous. Abundance increased with ground cover but fell with woody density, highlighting habitat heterogeneity's role in sustaining diversity amid encroachment. The third objective evaluates bush thinning management practice: manual/chemical treatments at 50\% (moderate) and 100\% (complete) intensities. Moderate manual thinning boosted arthropod abundance, richness, and functional diversity versus complete/chemical options. Pollinators, herbivores, decomposers, and predators thrived under partial shrub thinning, preserving heterogeneity; while chemical clearing suppressed sensitive groups like Auchenorrhyncha, Opiliones, and Coccinellidae. Soil properties, including pH and nutrient concentrations, further modified arthropod responses across shrub species. In summary, the thesis presents a framework for arthropod conservation based on three pillars: robust data systems, vegetation-arthropod ecology, and balanced rangeland management that restores grasslands (e.g. 50\% moderate manual shrub thinning) without causing arthropod biodiversity loss. Integrating informatics, community ecology, and restoration advances dryland resilience in African savannahs and rangeland ecosystems.}, subject = {Arthropod biodiversity; Citizen science; Rangeland restoration; Shrub thinning; Namibia biodiversity; Arthropoden; Biodiversit{\"a}t; Namibia; Weidefl{\"a}chenrestaurierung; Strauchverj{\"u}ngung; Namibia; Trockensavanne; Weide ; Gliederf{\"u}ßer; Artenreichtum; Landschafts{\"o}kologie}, language = {en} } @phdthesis{ReyesPacheco2026, author = {Reyes Pacheco, Juan-Francisco}, title = {Explaining large language models for passage-level political statement extraction using linguistic rule-based models}, doi = {10.26127/BTUOpen-7293}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72930}, school = {BTU Cottbus - Senftenberg}, year = {2026}, abstract = {The complexity of processing the language in political discourse presents a challenge due to its ambiguity and nuance. However, the growing volume of digital political content and the proven efficiency of Large Language Models (LLMs) in processing and "understanding" such statements presents an opportunity to explore new approaches. Therefore, the automatic extraction of coherent political statements at the passage level is an opportune task in the current era of increasing digitization of political discourse. This research addresses the problem of accurately extracting "relevant" political statements. Moving beyond traditional rule-based information extraction (IE) techniques, we propose a Natural Language Processing (NLP) pipeline composed of state-of-the-art LLMs. Given the opaque nature of Transformer models and the need for AI transparency — moreover, within the intricate nature of political language — this thesis develops an approach based on Explainable Artificial Intelligence (XAI) tools to explain LLM classification behavior from a linguistic perspective across the pipeline's NLP tasks. The empirical approach is structured around three specific NLP challenges, addressed in dedicated papers: (1) Text Genre Classification, employing a BERT model to distinguish between speeches and interviews based on the number of speakers, thereby addressing text genre identification and filtering; (2) Stance Classification, utilizing a few-shot learning model (SetFit) for binary classification of stance expressions, enhancing the detection of relevant political statements; and (3) Topic Continuity Analysis, using Sentence Pair Modeling (SPM) and BERT to analyze topic continuity between sentence pairs, ensuring the coherence of extracted passages. This research enhances explainability across these challenges by combining linguistic rule-based models (LRBMs) with contemporary explainability tools like SHAP and Transformers Interpret. By leveraging corpus linguistics, tailored lexicons, and lexicogrammatical rules, our research adds transparency to LLMs' decision-making processes, bridging traditional linguistic theories with modern neural models. Likewise, although not the primary focus, our research emphasized model performance, consequently increasing the accuracy of their explanatory capacity. For each challenge, ad hoc datasets focused on American political discourse in English were created. LRBMs played a crucial role in feature engineering and dataset annotation, further improving the explainability and performance of XAI tools. Fusing linguistic insight with neural outputs allowed for granular token-level analysis of morphosyntactic, semantic, and pragmatic features, offering a novel contribution by aligning outputs with established linguistic theories. This thesis advances the understanding of LLM explainability by approaching the extraction of relevant political statements from a linguistically grounded framework.}, subject = {Large language models; Information extraction; NLP; Politics; Discourse analysis; XAI; Politik; Diskursanalyse; LLM; Explainable artificial intelligence; Politik; Diskursanalyse; Großes Sprachmodell; Automatische Sprachanalyse; Erkl{\"a}rbare K{\"u}nstliche Intelligenz}, language = {en} } @phdthesis{Hady2025, author = {Hady, Mohamed Elfatih Ahmed Omer}, title = {Stochastic optimal control of occupational pension funds}, doi = {10.26127/BTUOpen-7286}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72867}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {In this dissertation, we consider occupational pension funds that are set up by a company for its employees. A special feature of such pension funds is that the collectives of insured individuals are typically smaller, and benefit payments depend on the seniority and salary of the insured. Therefore, fluctuations over time in the composition of the collective of insured persons in terms of age, length of service, and salary cannot be ignored when calculating the actuarial liabilities and the company's financial contributions to the fund. We describe the stochastic dynamics of the composition of the collective of insured individuals by a discrete-time Markov chain model. This allows us to derive the dynamics of the expected aggregated actuarial liabilities for all insured individuals of the collective as a functional of the Markov chain. They are then approximated by mean-reverting processes, which facilitate the formulation of stochastic optimal control problems that arise in the cost-optimal management of occupational pension funds. Here, the objective is to invest the fund's capital in a financial market such that the expected net present value of all future contributions to the fund is minimized. The resulting optimal funding problem is studied under additional constraints that capture the obligations imposed by a regulator. They are intended to ensure that the fund capital is always sufficient to finance current benefit payments and future actuarial obligations. This problem is analyzed firstly under additional dynamic risk constraints and secondly under tracking constraints, which are included in the performance criterion with the help of penalties. While the risk constraints aim to keep the fund assets above the actuarial liabilities, the tracking constraints aim to keep these assets as close as possible to the liabilities. The resulting discrete-time stochastic optimal control problems are treated as Markov decision processes (MDPs). The corresponding Bellman equation for the value function is solved numerically using a backward recursion algorithm. We present the results of extensive numerical experiments showing the properties of the value function and the optimal decision rules, as well as their dependence on the various risk constraints.}, subject = {Occupational pension fund; Stochastic optimal control; Markov chain model; Actuarial liabilities; Dynamic risk constraints; Betriebliche Altersvorsorge; Stochastische optimale Steuerung; Markovketten-Modell; Versicherungsmathematischen Verpflichtungen; Dynamische Risikobeschr{\"a}nkung; Betriebliche Altersversorgung; Versicherungsmathematik; Markov-Kette}, language = {en} } @misc{OPUS4-7100, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,05 (02.03.2026)}, doi = {10.26127/BTUOpen-7100}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71002}, year = {2026}, abstract = {1. Erste {\"A}nderungssatzung zur Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Leichtbau und Werkstofftechnologie (M.Sc.) vom 26. Februar 2026 2. Lesefassung: Fachspezifische Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Leichtbau und Werkstofftechnologie (M.Sc.) vom 28. August 2023 (AMbl. 13/2023) i. d. F. der Ersten {\"A}nderungssatzung zur Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Leichtbau und Werkstofftechnologie (M.Sc.) vom 26. Februar 2026}, language = {de} } @misc{OPUS4-7099, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,04 (02.03.2026)}, doi = {10.26127/BTUOpen-7099}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70995}, year = {2026}, abstract = {Neufassung der fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Wirtschaftsingenieurwesen (B.Sc.) vom 26. Februar 2026}, language = {de} } @misc{OPUS4-7098, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,03 (27.02.2026)}, doi = {10.26127/BTUOpen-7098}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70989}, year = {2026}, abstract = {Neufassung der fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Instrumental- und Gesangsp{\"a}dagogik (B.Mus.) vom 26. Februar 2026}, language = {de} } @misc{OPUS4-7097, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,02 (27.02.2026)}, doi = {10.26127/BTUOpen-7097}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70979}, year = {2026}, abstract = {Neufassung der fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Hybrid Electric Propulsion Technology M.Sc. vom 26. Februar 2026}, language = {de} } @article{PillingBaehrWunderlich2026, author = {Pilling, Eric and B{\"a}hr, Martin and Wunderlich, Ralf}, title = {Reinforcement learning methods for the stochastic optimal control of an industrial power-to-heat system}, series = {Energies}, volume = {19}, journal = {Energies}, number = {4}, publisher = {MDPI}, address = {Basel}, issn = {1996-1073}, doi = {10.3390/en19041046}, year = {2026}, abstract = {The optimal control of sustainable energy supply systems, including renewable energies and energy storage, takes a central role in the decarbonization of industrial systems. However, the use of fluctuating renewable energies leads to fluctuations in energy generation and requires a suitable control strategy for the complex systems in order to ensure energy supply. In this paper, we consider an electrified power-to-heat system which is designed to supply heat in the form of superheated steam for industrial processes. The system consists of a high-temperature heat pump for heat supply, a wind turbine for power generation, a sensible thermal energy storage for storing excess heat, and a steam generator for providing steam. If the system's energy demand cannot be covered by electricity from the wind turbine, additional electricity must be purchased from the power grid. For this system, we investigate the cost-optimal operation, aiming to minimize the electricity cost from the grid by a suitable system control depending on the available wind power and the amount of stored thermal energy. This is a decision-making problem under uncertainty regarding the future prices for electricity from the grid and the future generation of wind power. The resulting stochastic optimal control problem is treated as finite-horizon Markov decision process for a multi-dimensional controlled state process. We first consider the classical backward recursion technique for solving the associated dynamic programming equation for the value function and compute the optimal decision rule. Since that approach suffers from the curse of dimensionality, we also apply reinforcement learning techniques, namely Q-learning, that are able to provide a good approximate solution to the optimization problem within reasonable time.}, subject = {Stochastic optimal control; Markov decision process; Dynamic programming; Q-learning; Power-to-heat system}, language = {en} } @article{DjoudiAmosseAvironetal.2026, author = {Djoudi, El Aziz and Amoss{\´e}, Ewen and Aviron, St{\´e}phanie and Birkhofer, Klaus and Libereau, Benjamin and Plantegenest, Manuel and P{\´e}tillon, Julien}, title = {Multi‑trophic arthropod communities modulated by local farming system and landscape heterogeneity}, series = {Landscape Ecology}, volume = {41}, journal = {Landscape Ecology}, publisher = {Springer Nature}, address = {Berlin}, issn = {1572-9761}, doi = {10.1007/s10980-026-02298-y}, year = {2026}, abstract = {Organic farming is increasingly used worldwide in recent decades, but the role of this farming system in shaping the trophic structure of arthropod communities remains poorly understood, especially at different spatial scales. Therefore, the contribution of landscape heterogeneity in shaping arthropod's trophic guilds remain understudied. In this study, we assessed how the evenness, the abundance and the taxonomic richness of arthropod trophic groups were shaped by the local farming system, landscape heterogeneity (including the percentage of semi-natural habitats and organic fields), and their interaction. Arthropod's trophic guilds (ground and vegetation-dwelling) were sampled in 20 spatial independent pairs of conventional (CF) and organic (OF) fields located in Brittany (Western France) by using pitfall traps and sweep nets replicated in time and space. A total of 95,822 arthropods belonging to 197 taxonomic groups were sampled. Farming system has a strong overall positive effect on the community structure of both ground- and vegetation-dwelling arthropods. Landscape heterogeneity, alone and in interaction with farming systems, affected positively the diversity and abundance of most trophic groups for both ground- and vegetation-dwelling arthropods. Organic farming therefore affected the trophic composition of arthropod communities not only locally, but also at the landscape scale. Our study highlights the strong positive effect of farming system and the landscape heterogeneity on arthropod communities and more importantly the interconnection between different spatial scales in this process. Taking these aspects into account is therefore crucial in understanding arthropod community dynamics in agroecosystems.}, subject = {Agroecology; Agricultural geography; Biodiversity; Landscape ecology; Organic farming}, language = {en} } @phdthesis{MenaresBarraza2025, author = {Menares Barraza, Esteban Javier}, title = {Beyond species richness : integrating ecological interactions and multiple goals in grassland conservation}, doi = {10.26127/BTUOpen-7233}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72336}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {This thesis explores how incorporating trophic interactions and a wider range of conservation goals can enhance the design and implementation of biodiversity conservation measures in permanent grasslands. Based on data from two long-term biodiversity monitoring regions in Germany [Schw{\"a}bische Alb (ALB) and Schorfheide-Chorin (SCH)], the thesis is structured around three main chapters. Together, these chapters examine (1) the reliability of co-occurrence methods for inferring plant-butterfly interactions, (2) the cost-effectiveness of different land-use management practices for achieving multiple conservation goals, and (3) the detection of ecological thresholds for key drivers of change in these goals at species, community, and ecosystem levels. I employed a combination of literature review, field data, statistical inference models, optimisation algorithms, and multivariate analyses to provide a thorough evaluation of grassland biodiversity and move beyond traditional species richness metrics by incorporating interaction networks and other metrics, thus capturing ecological complexity relevant to conservation planning. Chapter I shows that, despite the Relative Interaction Intensity (RII) with pairwise null models approach performing better than the other methods tested, co-occurrence methods fail to reliably predict known plant-butterfly interactions. This highlights the limited usefulness of such methods for mobile species and the importance of directly observing trophic interactions. Chapter II shows that optimising land-use management for multiple conservation goals under cost-effectiveness can achieve substantial ecological benefits (up to 80\% of the maximum) using as little as 30\% of the budget. Although trade-offs were observed, certain goals, including trophic interactions, butterfly richness, and network nestedness, showed more synergies. Optimising for sets of goals consistently outperformed single-goal strategies, though regional variation in optimal management highlights the need for region-specific planning. Chapter III presents ecological thresholds for key biodiversity goals along management and landscape gradients. In ALB, most goals showed sharp declines above one to two cuts per year, and low grazing levels were associated with higher multidiversity and more complex interaction networks. In SCH, network connectance and the number of interactions increased even at low levels of forest cover (2-10\%), highlighting the importance of maintaining forest patches near grasslands for supporting biodiversity. Additionally, even low fertiliser inputs were associated with species-poor butterfly communities composed mainly of common species with wider distribution ranges. These results provide key insights for improving region-specific management strategies in conservation programmes and show the importance of using multiple conservation goals, especially those capturing species interactions, when designing effective conservation strategies.}, subject = {Co-occurrence analysis ; Trophic interactions; Network metrics; Cost-effective optimisation; Trade-off analysis; Kookkurrenzanalyse <{\"O}kologie>; Trophische Interaktionen; Netzwerkkennzahlen; Kosteneffektive Optimierung; Trade-off-Analyse; Biodiversit{\"a}t; Naturschutzmonitoring; Effizienz; Artengruppe; Nahrungskette; Schmetterlinge}, language = {en} } @article{MbuyaPawarJafarietal.2025, author = {Mbuya, Christel Olivier Lenge and Pawar, Kunal and Jafari, Mitra and Shafiee, Parisa and Okoye Chine, Chike George and Tarifa, Pilar and Dorneanu, Bogdan and Arellano-Garcia, Harvey}, title = {Tuning catalyst performance in methane dry reforming via microwave irradiation of nickel-silicon carbide systems}, series = {Journal of CO2 Utilization}, volume = {102}, journal = {Journal of CO2 Utilization}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-9820}, doi = {10.1016/j.jcou.2025.103270}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72832}, year = {2025}, abstract = {The dry reforming of methane (DRM) is a promising route for converting greenhouse gases such as methane (CH4) and carbon dioxide (CO2) into valuable syngas, hydrogen (H2) and carbon monoxide (CO). However, traditional nickel (Ni)-based catalysts suffer from rapid deactivation due to carbon deposition and sintering, especially when supported on low thermal conductivity materials. In this work, a novel post-synthesis microwave irradiation (MIR) treatment is introduced to systematically optimize the performance of Ni - β - SiC and Ni - Ti - Cβ - SiC catalysts for DRM. Unlike previous studies that have used MIR during reaction or with different supports, this approach tunes the metal - support interactions and textural properties of Ni - β - SiC and Ni - Ti - Cβ - SiC catalysts by varying the MIR exposure time after catalyst synthesis. MIR post-treatment (10-25 s) increased the CH4 conversion to 65 \% and the CO2 conversions to 62 \% for Ni-β-SiC catalysts and improved the H₂/CO ratio to 0.80, with stable performance over 20 h. For Ni-Ti-Cβ-SiC, MIR (10-20 s) maintained CH4 conversion up to 60 \% and CO2 conversion to 58 \% over 20 h, while the untreated catalyst, though initially higher, deactivated rapidly. Excessive MIR (30 s) reduced performance for both catalyst types, underscoring the need for optimal exposure time. These findings demonstrate post-synthesis MIR provides a tuneable approach for enhancing both the activity and durability of Ni/SiC - based DRM catalysts through controlled modification of metal - support interactions. This work offers new insights for the design of robust catalysts aimed at greenhouse gas utilization and sustainable syngas production, with activity and stability enhancements linked to controlled changes in metal - support interactions.}, subject = {Carbon dioxide; Dry reforming; Methane; Microwave irradiation; Ni Silicon carbide catalysts}, language = {en} } @article{SharmaRadomskyMathiazhaganetal.2025, author = {Sharma, Dikshant and Radomsky, Lukas and Mathiazhagan, Akilan and Asli, Majid and H{\"o}schler, Klaus and Mallwitz, Regine}, title = {Thermal analysis of metal foam integrated heatsink for electrified aircraft applications}, series = {International Journal of Thermofluids}, volume = {30}, journal = {International Journal of Thermofluids}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2666-2027}, doi = {10.1016/j.ijft.2025.101465}, year = {2025}, abstract = {Metal foams facilitate large heat dissipation in high-power dense systems such as power electronics for electrified propulsion application. This work addresses the cooling of a power semiconductor device with aluminium and copper metal foam integrated hybrid heatsink and its comparative analysis to a conventional finned heatsink using 0D and 3D modelling approach. Two-equation foam model in Fluent is utilized and the numerical approach is validated against experimental dataset. Inlet air velocity is varied such that the Darcy to turbulent regimes of the open-cellular foams are covered. Foam porosities from ∼ 0.85-0.95 with 10-20 PPI are investigated and the thermal performance of the heatsink is found to be independent of the foam material. High porosity (> 0.9), 20 PPI foams are found to aid forced-convection by improving the thermal resistance by more than 10\% against the 10 PPI counterparts. The hybrid heatsink outperforms the foam-based and conventional heatsink by 40\% and 15\% respectively when considering the reduction in junction temperatures, while the hydraulic resistance increases 10 times when compared to the conventional one. The 0D thermal resistance model is robust in predicting the junction temperatures for metal foam heatsinks with only a 5\%-6\% discrepancy for both the 50 W and 100 W heat load scenarios. The key and novel contribution of this study is the integration of detailed 3D simulations of a power electronics cooling environment with the development of a corresponding 0D thermal model. This approach not only eases the physical representation of the system but also enables the model to be extended to diverse heat load conditions.}, subject = {Electric propulsion; Electronics thermal management; Metal foam heatsink; Porous media; Forced convection}, language = {en} } @article{YangHenkeMoehlenkamp2025, author = {Yang, Yinghui and Henke, Markus and M{\"o}hlenkamp, Georg}, title = {Analytical investigation of short-circuit protection and post-fault operation in dual three-phase PMSMs for hybrid electric counter-rotating compressor applications}, series = {IEEE Access}, volume = {14}, journal = {IEEE Access}, publisher = {IEEE}, address = {New York}, issn = {2169-3536}, doi = {10.1109/ACCESS.2026.3658195}, pages = {17303 -- 17323}, year = {2025}, abstract = {The hybrid electric counter-rotating compressor (CRC) has the potential to improve power-specific fuel consumption in aircraft engines. However, due to its cascaded structure, a reduction or loss of driving power in a single compressor stage can significantly degrade the overall compressor performance. A short-circuit fault is a typical electrical failure in an electric motor that can lead to a complete loss of driving power. One innovative post-fault operation strategy is to utilize the braking capability of the failed motor at low speed to lock its corresponding compressor stage. In this way, the failed stage can function as a stator stage, still providing degraded flow-guiding capability and preventing reverse rotation. This article investigates the short-circuit protection strategy and post-fault operation of dual three-phase permanent magnet synchronous motors (DTP-PMSMs) for hybrid electric CRC applications. Analytical models are developed to characterize the post-fault behavior of the DTP-PMSM. Key design factors are defined, and their influence on post-fault performance is analyzed. Critical post-fault operating points are identified to evaluate and compare different protection strategies. Based on these results, an optimized shortcircuit protection strategy is proposed for DTP-PMSMs in CRC applications. Finally, the analytical findings and the proposed strategy are validated through simulation.}, subject = {Windings; Circuit faults; Rotors; Torque; Protection}, language = {en} } @phdthesis{Schiller2025, author = {Schiller, Josepha}, title = {Explainable artificial intelligence for understanding cross-scale diversification in agricultural landscapes}, doi = {10.26127/BTUOpen-7245}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72457}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Agricultural production is expected to cope with numerous challenges in the future. Therefore, the diversification of agricultural systems has gained attention as a promising solution to meet ecological, economic, and social needs in the long term. Despite the overall positive reports of diversification effects, the joint distribution of temporal and spatial diversity and their influencing factors remains largely unexplored. This thesis aims to assess the interrelations of diversity within the agricultural system at the field, farm, and landscape levels and to investigate the links between temporal and spatial crop diversity in Brandenburg, Germany, from 2011 to 2020 using machine learning (ML) combined with explainable artificial intelligence (XAI) tools. This approach involves identifying influencing factors of agricultural diversity such as farm attributes, landscape complexity, and environmental conditions. Data on agricultural land use were derived from the Integrated Administration and Control System (IACS), covering more than 5,642 farms and over 150,000 fields annually. The results revealed (1) a negative relationship between temporal crop diversity at the field level and landscape level complexity associated with soil quality and (2) a positive link between temporal and spatial crop diversity associated with higher crop diversity at the farm level. The potential of using XAI as a trust-enhancing tool for machine learning in such an interdisciplinary research setting was explored by reviewing the recent use of XAI tools in environmental and Earth system sciences in 575 studies. This revealed (3) that despite the increasing use of XAI tools in the environmental and Earth system sciences over time, the question of whether XAI can contribute to increased trust, e.g., in high-stakes decision contexts, has been addressed in only 1.2\% of the studies. These findings contribute to understanding synergies and trade-offs between diversity within agricultural systems across levels and scales and its influencing factors. They also provide insights into the potential of XAI tools toward trustworthy ML applications. These findings can serve to develop targeted diversification strategies that enhance the resilience of agricultural systems and the sustainability of agricultural landscapes and improve the trustworthiness of ML and XAI in interdisciplinary research settings.}, subject = {Explainable artificial intelligence; Machine learning; Agricultural landscapes; Crop diversification; Heterogeneous landscapes; Erkl{\"a}rbare k{\"u}nstliche Intelligenz; Maschinelles Lernen; Kulturpflanzenvielfalt; Landschaftsheterogenit{\"a}t; Agrarlandschaften; Agrarlandschaft; Kulturpflanzen; Diversifikation ; Landschafts{\"o}kologie; Maschinelles Lernen; Erkl{\"a}rbare k{\"u}nstliche Intelligenz}, language = {en} } @article{JuliaJuliaTobias2025, author = {Julia, Zscherneck and Julia, Binder and Tobias, Mettenberger}, title = {Rural network assemblages : disentangling egocentric networks of digital pioneers in peripheral German regions}, series = {Regional studies, regional science}, volume = {12}, journal = {Regional studies, regional science}, number = {1}, publisher = {Routledge}, address = {London}, issn = {2168-1376}, doi = {10.1080/21681376.2025.2594312}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72787}, pages = {996 -- 1012}, year = {2025}, abstract = {Digital solutions are seen as promising ways of addressing current challenges in rural regions. Individual or group key actors accessing resources foster these developments through networks. In light of regional clustering and agglomeration effects on the one hand and increased virtual mobility on the other hand, assumptions about the spatiality of such networks are highly controversial. Our paper takes this as a point of departure, asking how spatiality is constructed in the networks of so-called 'digital pioneers' (DPs). The sampling process took place in two German rural regions with different preconditions for digital technology adoption, where we conducted egocentric network analysis and qualitative interviews. Employing the assemblage perspective, we analysed networks of 30 individuals in terms of the analytical categories of territoriality, stability and connectivity. Our findings distinguish between three important roles of network contacts: (1) multipliers in social networking, (2) users of the DP's products and services, as well as (3) close family members that are important in professional contexts. Although DPs are often deeply embedded in and feel attached to their region, networks vary significantly in their territorial radius, also including highly functional problem-solving contacts to distant places. Consequently, our evidence challenges static territorial models of innovation processes, advocating for processual and multidimensional perspectives that consider social networks and individual agency. Likewise, our study complements current research on rural governance by shifting the focus from key institutions and formal networks to less formally integrated actors and problem-solving networks.}, subject = {Qualitative network analysis; Assemblage; Bridging and bonding ties; Peripheral regions Germany}, language = {en} } @phdthesis{Schulte2025, author = {Schulte, Clara Jiva}, title = {St{\"a}hlerne Bahnbr{\"u}cken als Erbe der Hochmoderne : Grundlagen f{\"u}r eine ganzheitliche Entscheidungsfindung zwischen Instandsetzung und Erneuerung}, doi = {10.26127/BTUOpen-7218}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72182}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Im Netz der DB AG befinden sich ca. 5.000 Br{\"u}cken aus Stahl. Etwa die H{\"a}lfte wurde zwischen 1880 und 1920 errichtet. Einige stehen wegen ihrer baukulturellen Bedeutung als identit{\"a}tspr{\"a}gende Zeugnisse der industriellen Revolution unter Denkmalschutz. Der Erhalt dieser Bauwerke bietet nicht nur aus Sicht der in ihnen gespeicherten Goldenen Energie, den immateriellen Wert eines Bauwerks, ein enormes Potenzial, sondern auch in {\"o}kologischer Hinsicht durch die Graue Energie. Dar{\"u}ber hinaus bringt die Weiternutzung der Br{\"u}cken angesichts steigender Baukosten infolge von Ressourcenknappheit und globalen Krisen {\"o}konomische Vorteile. Dennoch sind zahlreiche historische, st{\"a}hlerne Bahnbr{\"u}cken abgebrochen und ersetzt worden, da ein Neubau als sicherer, planbarer und wirtschaftlicher gilt. Die M{\"o}glichkeit, eine Br{\"u}cke durch Instandsetzungs- oder Ert{\"u}chtigungsmaßnahmen an ge{\"a}nderte Anforderungen anzupassen, wird h{\"a}ufig bereits zu Beginn der Planungen mit Verweis auf technische oder wirtschaftliche Aspekte verworfen. Dies liegt an Finanzierungsbedingungen sowie einem stark monodisziplin{\"a}ren Entscheidungs- und Planungsprozess. Die maßgeblichen Stakeholder werden oft erst sp{\"a}t einbezogen, sodass {\"A}nderungen nicht mehr ohne erhebliche Zeit- und Kostenverluste m{\"o}glich sind. Nicht selten f{\"u}hrt dies zu Auseinandersetzungen, die Baumaßnahmen verz{\"o}gern. Die Dissertation verfolgt das Ziel, durch die Entwicklung methodischer Grundlagen f{\"u}r eine parametrisierte, wertebasierte Bewertungsmethodik einen ganzheitlichen Vergleich von Interventionsvarianten an denkmalgesch{\"u}tzten, st{\"a}hlernen Bahnbr{\"u}cken bereits in einer fr{\"u}hen Planungsphase zu erm{\"o}glichen. Neben technischen und {\"o}konomischen Kriterien werden Aspekte der Baukultur und {\"O}kologie gleichberechtigt ber{\"u}cksichtigt. Dynamische Steuerungsparameter erm{\"o}glichen einen iterativen Entscheidungsprozess, in dem die Stakeholderinteressen transparent gegeneinander abgewogen werden. Ausgehend von einer bautechnikgeschichtlichen Kontextualisierung st{\"a}hlerner Br{\"u}cken um 1900 sowie der Analyse zentraler Potenziale und Hindernisse f{\"u}r die Integration von Nachhaltigkeitsprinzipien werden Bewertungskriterien f{\"u}r die vier Kategorien formuliert. Im Abgleich mit Kriterien und Verfahren aus Hoch- und Straßenbr{\"u}ckenbau wird ein auf die Anforderungen denkmalgesch{\"u}tzter Bestandsbahnbr{\"u}cken aus Stahl abgestimmtes, synoptisches Bewertungssystem entwickelt. Die Validierung erfolgt anhand von vier realen Br{\"u}ckenbauprojekten der DB AG, bei denen historische Br{\"u}cken {\"u}berwiegend durch Neubauten ersetzt wurden. F{\"u}r jede Fallstudie werden zwei alternative Erhaltungskonzepte entwickelt und ganzheitlich bewertet. Die Dissertation zeigt, dass ein ganzheitliches Bewertungsverfahren f{\"u}r st{\"a}hlerne, denkmalgesch{\"u}tzte Bestandsbr{\"u}cken zielf{\"u}hrend ist, wenn es fr{\"u}hzeitig und partizipativ integriert wird. Die Fallstudien belegen, dass unter Ber{\"u}cksichtigung baukultureller und {\"o}kologischer Kriterien Ert{\"u}chtigungsvarianten einem Ersatzneubau h{\"a}ufig ebenb{\"u}rtig sind.}, subject = {St{\"a}hlerne Bahnbr{\"u}cken; Bautechnische Denkmalpflege; Instandsetzung und Ert{\"u}chtigung; Suffizienz-Strategien; Entscheidungshilfe; Steel railway bridges; Structural heritage conservation; Rehabilitation and strengthening; Sufficiency strategies; Decision support; Eisenbahnbr{\"u}cke; Stahl; Baudenkmal; Modernisierung ; Bausubstanz; Erhaltung; Suffizienz; Entscheidungsunterst{\"u}tzung}, language = {de} } @phdthesis{Agunbiade2025, author = {Agunbiade, Michael Bode}, title = {Human perceptions, ecological role and threats to the hooded vultures (𝘕𝘦𝘤𝘳𝘰𝘴𝘺𝘳𝘵𝘦𝘴 𝘮𝘰𝘯𝘢𝘤𝘩𝘶𝘴) in the Gambia : conservation implications}, doi = {10.26127/BTUOpen-7270}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72705}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Hooded Vultures (Necrosyrtes monachus) are critically endangered urban scavengers that are declining rapidly across West Africa due to poisoning, habitat destruction, and belief-based exploitation. In cities and towns, they provide vital ecosystem services by removing organic waste, limiting pest outbreaks, and reducing disease risks. Despite their importance, their populations and habitats remain undervalued and insufficiently protected in many regions, including The Gambia. Conservation planning is further constrained by limited quantitative information on (i) belief-based use of vultures, (ii) the influence of organic waste availability on scavenger community composition at slaughterhouses, and (iii) local perceptions and attitudes toward vulture conservation. This thesis assesses ecosystem services provided by Hooded Vultures in The Gambia, focusing on their role in urban organic waste removal, while identifying threats and proposing strategies for effective conservation. Specifically, it (1) investigates belief-based use of vultures in West Africa, (2) maps suitable habitats in The Gambia, (3) evaluates how organic waste availability shapes scavenger communities and interactions at slaughterhouses, and (4) examines community perceptions and perceived threats. A systematic review of 92 studies demonstrates that belief-based use is a major driver of vulture mortality in West Africa, contributing up to 29\% of documented deaths, with Hooded Vultures disproportionately affected and comprising over 90\% of trafficked parts in some areas. Poisoning, both intentional and accidental, is the primary method of killing, and increasing demand has raised the cost of vulture parts, further incentivizing exploitation. Habitat suitability modeling using MaxEnt and road surveys (791 km, 2017-2021) indicates that only 11.6\% of The Gambia represents highly suitable habitat, concentrated mainly in the western region and Greater Banjul, where food resources associated with human settlements are abundant. Built-up area density, proximity to roads, and water availability explain most variation in occurrence. Surveys of five slaughterhouses reveal that Hooded Vultures dominate where organic waste is highest, confirming their ecological role, although domestic dogs frequently outcompete them during direct interactions. Finally, questionnaires from 200 respondents show predominantly positive attitudes (74\%) and recognition of the species' benefits, while highlighting poisoning, habitat loss, and belief-based use as key threats and revealing limited awareness of conservation initiatives. Overall, conserving Hooded Vultures in The Gambia requires integrated actions combining habitat protection, waste management, poisoning prevention, and community engagement to safeguard both biodiversity and essential ecosystem services.}, subject = {Urban waste management; Conservation strategies; Suitable habitats; Community perceptions; St{\"a}dtische Abfallwirtschaft; Erhaltungsstrategien; Geeignete Lebensr{\"a}ume; Gemeinschaftswahrnehmungen; Gambia; Geier; {\"O}kosystemdienstleistung; Vogelschutz}, language = {en} } @article{MalkRiedelHinzetal.2025, author = {Malk, Konrad and Riedel, Ramona and Hinz, Christoph and Fischer, Thomas and Martienssen, Marion}, title = {Adsorption of phosphonates to iron- or aluminum-based flocculants in wastewater treatment}, series = {Water}, volume = {18}, journal = {Water}, number = {1}, publisher = {MDPI}, address = {Basel}, issn = {2073-4441}, doi = {10.3390/w18010116}, year = {2025}, abstract = {In this study, we investigated the impact of varying iron (Fe) and aluminum (Al) contents on the adsorption of phosphonates to activated sludge. Phosphonates originating from household applications account for up to 40\% of the non-reactive dissolved phosphorus in domestic sewage treatment plants and thus can contribute to the eutrophication of water bodies. Although these substances are not readily degradable, substantial quantities, ranging from 40\% to more than 90\%, are removed by sludge adsorption. The results demonstrate a strong correlation between the adsorption of aminophosphonates and the Fe3+ content of the sludge. The maximum phosphonate loadings were 5.94 mmol g-1 Fe3+ for ATMP, 4.94 mmol g-1 Fe3+ for EDTMP, 4.74 mmol g-1 Fe3+ for DTPMP, and 2.25 mmol g-1 Fe3+ for glyphosate. In contrast to pure ferric hydride flocs, the adsorption of phosphonates was approximately threefold higher when the hydroxides were located within activated sludge flocs. It is concluded that native sludge flocs provide larger iron surfaces than ferric hydroxide alone. Based on the weight of the adsorbents, aluminum salts were four times less efficient than ferric salts. In sludge without ferric or aluminum hydroxides, phosphonate adsorption was negligible.}, subject = {Adsorption; Activated sludge; Ferrous oxide; Phosphonates; Wastewater treatment}, language = {en} } @article{SenguelReiterLotfietal.2025, author = {Seng{\"u}l, Akant and Reiter, Sebastian and Lotfi, Zahra and Efremenko, Julia and Laroussi, Arwa and Corley-Wiciak, Agnieszka Anna and Ratzke, Markus and Mirsky, Vladimir M. and Wenger, Christian and Fischer, Inga Anita}, title = {Titanium nitride plasmonic nanohole arrays with polymer coating : optical properties and their humidity-induced modifications}, series = {Optical Materials Express}, volume = {16}, journal = {Optical Materials Express}, number = {2}, publisher = {Optica Publishing Group}, address = {Washington D.C.}, issn = {2159-3930}, doi = {10.1364/OME.578871}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72739}, pages = {184 -- 196}, year = {2025}, abstract = {The use of titanium nitride (TiN) for the fabrication of plasmonic structures such as nanohole arrays (NHAs) can enable their integration into optoelectronic devices on the silicon (Si) platform, for example, for the realization of on-chip chemical sensors and biosensors based on refractometric transduction. With a corresponding functionalization of the TiN nanohole arrays, these ultra-compact devices can be utilized in the development of various affinity sensors and sensor systems, such as cost-effective electronic noses for the early detection of gases in the food industry or agriculture. In this work, we focus on two types of coating for functionalization of TiN nanohole arrays: electrochemically synthesized poly-N-methylaniline and layer-by-layer deposited polyacrylic-acid/poly-allylamine (PAA/PAH). Our investigation comprises the experimental characterization of the optical properties of TiN nanhole arrays coated with polymer layers of different thicknesses as well as a comparison with simulation results. We demonstrate the potential of our setup sensing applications by measuring changes in optical properties of TiN nanohole arrays coated with PAA/PAH upon exposure to air of different humidity.}, subject = {Chemical sensors; Extraordinary optical transmission; Localized surface plasmon resonance; Optical coatings; Optical properties; Refractive index}, language = {en} } @article{OleynikRyzhakSchlipfetal.2025, author = {Oleynik, Paul and Ryzhak, Diana and Schlipf, Jon and Alvarado Chavarin, Carlos and Yamamoto, Yuji and Berkmann, Fritz and Ratzke, Markus and Fischer, Inga Anita}, title = {Influence of illumination conditions on photoluminescence enhancement in an Al/Si/Ge metasurface}, series = {Optics Express}, volume = {34}, journal = {Optics Express}, number = {1}, publisher = {Optica Publishing Group}, address = {Washington D.C.}, issn = {1094-4087}, doi = {10.1364/OE.577751}, pages = {78 -- 86}, year = {2025}, abstract = {Strong field enhancement supported by metasurfaces at resonance can be used to control and enhance the spontaneous emission rate of emitters. This is particularly relevant for emitters with comparatively low quantum yield such as germanium. Here, we investigate the µ-photoluminescence response obtained from a hybrid metasurface comprising a square lattice of Al/Si/Ge pillars. We explore how variations in excitation energy, excitation intensity and number of excited meta-atoms affect the spectral dependence of the photoluminescence signal and, in particular, the contribution of the metasurface to it. Our metasurface exhibits a magnetic dipole collective lattice resonance, whose contribution to the photoluminescence signal increases with increasing number of excited meta-atoms. Measuring only one metasurface under different illumination conditions can potentially be an alternative approach to probe the transition between finite-size effects and collective effects.}, subject = {Field enhancement; Germanium; Light emitting diodes; Photonic crystals; Quantum light sources; Scanning electron microscop}, language = {en} } @article{KimGerstbergerAslietal.2025, author = {Kim, Dongsuk and Gerstberger, Ulf and Asli, Majid and H{\"o}schler, Klaus}, title = {U-Net Driven Semantic Segmentation for Detection and Quantification of Cracks on Gas Turbine Blade Tips}, series = {Results in Engineering}, volume = {29}, journal = {Results in Engineering}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2590-1230}, doi = {10.1016/j.rineng.2025.108864}, year = {2025}, abstract = {Crack detection and quantification on gas turbine blades is crucial for component validation during the development phase and for operational efficiency in service, as unexpected cracks can compromise blade integrity and lead to early engine removals. Gas turbine blades operate under extreme thermal and mechanical stresses, making them particularly susceptible to crack formation. At the same time deterministic predictions of crack formation are subject to high uncertainty in material data and actual loading conditions. Accurate detection and quantification of cracks, therefore, is essential for the validation and calibration of life predictions in order to prevent in-service failures, to extend component lifespan, and to reduce maintenance costs. This study introduces a U-Net based semantic segmentation model designed to automate crack detection on turbine blade tips. The model was trained on a dataset of 210 surface images with and without evidence of cracks, each divided into 128  ×  128 pixel patches. Data augmentation techniques were applied to address the class imbalance between cracked and non-cracked pixels. The U-Net architecture, optimized with a Dice loss function, achieved a validation IoU of 0.7557, along with approximately 85\% recall and precision in identifying cracked pixels. The pixel-based accuracy of the model primarily affects the quantification of cracks rather than their identification. A sliding window pipeline was implemented to extend the model's applicability, enabling segmentation of entire blade tip images for comprehensive crack localization. While the model may occasionally miss low-contrast cracks, it holds potential as a supplementary tool for manual inspection as part of the life prediction validation. By providing automated crack localization and quantification, the model can assist in analyzing crack characteristics relative to engine operating conditions.}, subject = {Crack detection; Semantic segmentation; Gas turbine blade; U-Net; Deep learning; Convolutional neural network}, language = {en} } @article{WeissLiedtkeStefan2025, author = {Weiss, Romano and Liedtke, Victoria and Stefan, R{\"o}diger}, title = {Cannabidiol does not cause DNA double-strand breaks in a human liver-derived cell model}, series = {Journal of Cannabis Research}, volume = {8}, journal = {Journal of Cannabis Research}, number = {12}, publisher = {BMC}, address = {London}, issn = {2522-5782}, doi = {10.1186/s42238-025-00365-w}, year = {2025}, abstract = {Cannabidiol (CBD) is a non-psychoactive cannabinoid with potential therapeutic applications, including anti-inflammatory, analgesic, and anticancer effects. However, experts raised concerns about its potential to induce DNA damage and chromosomal aberrations at low concentrations. Notably, these studies used liver cell lines, which may not fully reflect the metabolic processing of CBD, potentially limiting the generalizability of their findings. This study investigated the short time effects of CBD on DNA double-strand breaks (DSBs) and proliferation in the human liver-derived cell line HepG2. HepG2 cells were treated with CBD (5 - 50 μM, 3 - 72h incubation). To investigate potential imbalances in the expression of cannabinoid receptors 1 and 2 (CB1 / CB2) within HepG2 cells, we examined their expression using Western blot analysis. We hypothesized that such an imbalance could be associated with pathogenic processes. Double-strand breaks were then detected (5 μM Etoposide (ETP) served as positive control) via indirect immunofluorescence analysis using H2AX and 53BP1 antibodies, followed by quantification of DSB foci. Expression of CB2 but not CB1 was downregulated by 30 \% in HepG2 cells after exposure to 5 μM CBD (24h incubation; 0.05) and 70 \% downregulated after exposure to 50 μM CBD (24h incubation; 0.01). This effect was dose-dependent. Whilst ETP induced dose dependent DSBs, we could not confirm findings by others that CBD significantly increases the number of H2AX and 53BP1 foci between 5 μM and 50 μM (3h incubation; 0.05). In our model, CBD stimulated the cells, as confirmed by modulation of CB2 expression as well as changes in intracellular cAMP. Our results show that CBD in ranges between 5 μM to 50 μM does not significantly increase the amount of DNA double strand breaks in HepG2 cells compared to the control. However, we did observe a significant reduction in cell proliferation and a significant increase in intracellular cAMP levels following CBD treatment.}, subject = {Cannabidiol; DNA damage; Proliferation; CAMP; HepG2}, language = {en} } @inproceedings{OPUS4-7259, title = {24th EEEIC International Conference on Environment and Electrical Engineering - Student Edition : Wrocław - Ostrava - Cottbus, June 2025}, editor = {Schenk, Mario and Janik, Przemysław and Michalec, Łukasz and Lehmann, Dirk}, doi = {10.26127/BTUOpen-7259}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72596}, year = {2025}, abstract = {In a time of growing public awareness of environmental challenges, intensified international efforts to reduce greenhouse gas emissions, and the increasing demand for electrical energy to support industrial growth, this conference makes a significant contribution to advancing the goals of diversification and sustainable development. The primary aim of the student conference is to foster dialogue among scientists and students from Wroclaw University of Technology, the Technical University of Ostrava, and Brandenburg University of Technology Cottbus-Senftenberg. This conference serves as a unique educational opportunity, encouraging students to author scientific papers, deliver presentations, and engage in discussions about future developments. It is an integral part of the curriculum, offered as an elective module and complemented by a technical excursion.}, subject = {Elektrische Energie; Energietechnik; Energievorrat; Umweltbezogenes Management; Energiequalit{\"a}t; Energieressourcen; Energietechnik; Energiewende; Umweltmanagement; Energy ressources; Energy system transformation; Environmental management; Power quality}, language = {en} } @misc{HessmannWeidner2025, author = {Heßmann, Alexandra and Weidner, Silke}, title = {Jugendliche und Innenstadt : Dokumentation der Studienergebnisse des Masterprojektes Stadtmanagement im Sommersemester 2025}, issn = {2941-7406}, doi = {10.26127/BTUOpen-7246}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72467}, year = {2025}, abstract = {Die Innenstadt stellt f{\"u}r viele Jugendliche einen zentralen Lebensraum dar, in dem sie sich entfalten, soziale Kontakte kn{\"u}pfen und ihre Freizeit gestalten k{\"o}nnen. Diese R{\"a}ume sind nicht nur Zentren von Handel und Kultur, sondern auch Orte der sozialen Interaktion und Identit{\"a}tsbildung. Gleichzeitig sind Jugendliche auch mit Herausforderungen konfrontiert, wie etwa fehlender R{\"u}ckzugsorte oder einem Mangel an geeigneten (konsumfreien) Freizeitangeboten. Eingebettet in das hochschul{\"u}bergreifende Studienprojekt des Wissensnetzwerkes Stadt und Handel e.V. zum Thema „Jugend und Innenstadt" nahm das Masterprojekt Stadtmanagement im Sommersemester 2025 die Zielgruppe der Jugendlichen und deren Interaktion mit der Innenstadt in den Blick und entwarf Strategien, um eine (f{\"u}r alle Altersstufen) attraktive Innenstadt zu gestalten. Ausgehend von einer Analyse des Untersuchungsraumes Senftenberg (Brandenburg) entwickelten die Studierenden Szenarien, Leitbilder und anschließend vertiefende Zukunftsbilder f{\"u}r eine jugendgerechte Innenstadt. Im Ergebnis entstanden Ans{\"a}tze zur Neugestaltung des Bahnhofsumfeldes, Ideen zur Leerstandsbehebung einbettet in einen partizipativen Prozess, freir{\"a}umliche Impulse f{\"u}r die Reaktivierung von Brach- und Stellfl{\"a}chen sowie Vorschl{\"a}ge f{\"u}r die digital-analoge Jugendbeteiligung. Die Ergebnisse wurden abschließend beim WSH-Studienwettbewerb eingereicht. Die vorliegende Publikation dokumentiert diesen Prozess und fasst die entwickelten Ideen, Ans{\"a}tze und Vorschl{\"a}ge f{\"u}r eine k{\"u}nftige Entwicklung der Innenstadt Senftenbergs zusammen.}, subject = {Jugendliche; Innenstadt; Zukunftsvisionen; Transformation; Brandenburg; Young people; Inner city; City center; Urban development; Senftenberg; Stadtplanung; Innenstadt; Jugend; Transformation; Partizipation}, language = {de} } @techreport{OPUS4-7212, type = {Working Paper}, title = {Feministisches Denken in Stadtplanung und Architektur : Essays aus einer gemeinsam entwickelten P{\"a}dagogik}, editor = {Quintero Gonz{\´a}lez, Natacha}, issn = {2941-7406}, doi = {10.26127/BTUOpen-7212}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72128}, year = {2025}, abstract = {Auf dem Weg zu gerechten und inklusiven Gesellschaften bleibt noch viel zu tun, um Machtsysteme abzubauen, die strukturelle Ungleichheiten aufrechterhalten. Die Ausbildung in unseren raumbezogenen Disziplinen kann dazu beitragen, indem sie eine kontinuierliche {\"U}berarbeitung der Planungsethik f{\"o}rdert und eine kritische Auseinandersetzung mit unterdr{\"u}ckerischen Strukturen anregt. Dazu geh{\"o}rt auch, Stadtplanung und Architektur mit patriarchalen, kolonialen, und kapitalistischen Machtstrukturen in Verbindung zu bringen und ihre Rolle in r{\"a}umlichen Praktiken der Ausbeutung, Segregation und Ausgrenzung zu problematisieren. Im Seminar „Feministisches Denken in der Stadtplanung" (Winter-Semester 2023/2024), haben wir in w{\"o}chentlichen Sitzungen erforscht, wie ein feministischer Ansatz dabei helfen kann, solche Verbindungen herzustellen. Dabei stellten wir uns die Frage, wie feministische Perspektiven Arenen bieten k{\"o}nnen, um bestehende Normen und Unterdr{\"u}ckungsformen zu hinterfragen und sich eine gerechtere r{\"a}umliche Praxis vorzustellen, insbesondere in Zeiten tiefer Fragmentierung, Ungerechtigkeit und Spaltung. Diese Publikation ist eine Sammlung von Essays, in denen Studierende ihre {\"U}berlegungen zu den Seminarthemen und den in jeder Sitzung erprobten experimentellen Methoden reflektieren. Der erste Teil umfasst Essays, die sich mit zentralen Str{\"o}mungen und theoretischen Perspektiven innerhalb des breiten Spektrums des feministischen Denkens befassen. Ein zweiter Teil vereint Essays, die sich mit feministischen Perspektiven in der Stadtplanung und Stadtforschung auseinandersetzen. Zuletzt sind Essays enthalten, die sich dem feministischen Denken in Design und Architektur widmen. Insgesamt ist diese Publikation als Einstieg f{\"u}r Studierende und alle Interessierten gedacht, die sich mit feministischen Ideen zum Thema Raum und dessen (Re)Produktion auf kollaborative Weise auseinandersetzen m{\"o}chten. Anstatt zu versuchen, eine allumfassende Definition von Feminismus oder feministischer Praxis zu liefern, zielt diese Sammlung von Aufs{\"a}tzen darauf ab, das Peer-to-Peer-Lernen zu f{\"o}rdern und kritische Aspekte der Raumproduktion hervorzuheben, die unserer Meinung nach im Mittelpunkt der Lehrpl{\"a}ne f{\"u}r Architektur und Planung stehen sollten.}, subject = {Feminist thinking; Feministisches Denken; Kollaboratives Lernen; Experimentelle Methoden; Critical urban pedagogy; Collaborative learning; Stadtplanung; Architektur; Feminismus; Hochschule; Lehre}, language = {de} } @book{OPUS4-7027, title = {Hybrid urbanisms in secondary cities of the global south : insights from urban planning and infrastructure delivery in Ghana and Peru}, editor = {Rosen, Christian and Gribat, Nina}, publisher = {Routledge}, address = {London}, isbn = {978-1-003-51113-7}, doi = {10.4324/9781003511137}, publisher = {BTU Cottbus - Senftenberg}, pages = {194}, year = {2025}, abstract = {This book presents the concept of Hybrid Urbanisms aiming to deconstruct the still-existing and often critiqued dualism of formalised and informalised practices in urban planning and infrastructure delivery. Using an innovative perspective, the book addresses this issue by focusing on the complex configurations in which both forms always co-exist and compete as powerful social constructs. It unveils the juxtaposition, simultaneity, dependency and intertwining of in-/formalised practices and highlights the relevance of this perspective to better understand urban development, especially in the global South. At the same time, the book focuses on secondary cities of Ghana and Peru that are often overlooked in the existing literature but play a relevant role in global urbanisation quantitively and qualitatively. In offering a comparative perspective on two very diverse geographical contexts, ten empirical studies are framed by a conceptualisation of 'Hybrid Urbanisms' and a concluding systematisation of perspectives on this central aspect of urban development. Taken together, this volume makes an innovative contribution on how to produce new and more diverse urban theories of cities of the global South. This book is essential for scholars, students and practitioners in the fields of urban planning, urban studies, infrastructure studies and international cooperation alike. In addition, it will be of interest to those in the fields of urban sociology, public policy, urban geography and development studies. This publication was supported by funds from the Publication Fund for Open-Access Monographs of the Federal State of Brandenburg, Germany and by the Faculty of Architecture, Civil Engineering and Urban Planning of Brandenburg University of Technology Cottbus-Senftenberg.}, subject = {Geography; Global development; Urban studies}, language = {en} } @phdthesis{GhomsiWabo2025, author = {Ghomsi Wabo, Samuel}, title = {Aktivierung stickstoffmodifizierter Kohlenstoffmaterialien mit KOH : Untersuchungen zum Porenbildungsprozess sowie zum Stickstoffaustrag}, doi = {10.26127/BTUOpen-7260}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72602}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {In dieser Arbeit wurden der Aktivierungsprozess und der Stickstoffaustrag w{\"a}hrend der KOH-Aktivierung stickstoffmodifizierter Kohlenstoffmaterialien untersucht, um die spezifischen und synergistischen Beitr{\"a}ge von Stickstoff und KOH zur Porosit{\"a}tsbildung in diesen Materialien zu kl{\"a}ren. Hierf{\"u}r wurden geeignete Referenzsysteme aus verschiedenen Kohlenstoffquellen (Cellulose und Phenolharz) hergestellt, bei denen Syntheseparameter wie der Harnstoffgehalt, die KOH-Konzentration und die Karbonisierungstemperatur systematisch variiert wurden. Es wurde festgestellt, dass eine Erh{\"o}hung des Harnstoffgehalts in der Synthesemischung zu einem h{\"o}heren Stickstoffgehalt in den Charcoals f{\"u}hrt - ein Effekt, der bei cellulosebasierten Materialien ausgepr{\"a}gter ist. Die KOH-Aktivierung f{\"u}hrte, unabh{\"a}ngig von der verwendeten Kohlenstoffquelle, zu einem erheblichen Stickstoffaustrag. Bei hohen KOH-Konzentrationen (> 10 M) war kein Stickstoff mehr im Material nachweisbar, was eng mit der Bildung einer ausgepr{\"a}gten Porosit{\"a}t zusammenh{\"a}ngt. Allerdings zeigte sich, dass der Gewinn an Porenvolumen durch den Austrag stickstoffhaltiger Spezies relativ gering ist. Stickstoff wirkt haupts{\"a}chlich als Katalysator f{\"u}r Redoxreaktionen zwischen KOH bzw. dessen Zersetzungsprodukten und Kohlenstoff, indem er die Bildung von K₂CO₃ beg{\"u}nstigt. Diese Kaliumspezies k{\"o}nnen die graphitische Struktur des Materials zerst{\"o}ren und zus{\"a}tzliche chemische Prozesse unterst{\"u}tzen, was zu einer intensiveren Aktivierung f{\"u}hrt. Die Bildung von K₂CO₃ ist stark vom Stickstoffgehalt abh{\"a}ngig und wurde ausschließlich bei Kohlenstoffen beobachtet, die mit einer Kombination aus hoher KOH-Konzentration und hohem Stickstoffgehalt hergestellt wurden. Im Gegensatz dazu f{\"u}hrte eine Kombination aus hoher KOH-Konzentration und niedrigem Stickstoffgehalt nicht zur Bildung von K₂CO₃, was darauf hinweist, dass die chemischen Wechselwirkungen des Kaliums in diesem Szenario eine untergeordnete Rolle bei der Porosit{\"a}tsbildung spielen. In solchen F{\"a}llen erfolgt die Aktivierung des Materials prim{\"a}r {\"u}ber Redoxreaktionen, bei denen Kohlenmonoxid (CO) und Kohlendioxid (CO₂) als Reaktionsprodukte entstehen. Diese Redoxreaktionen bewirken eine Umstrukturierung des Materials, jedoch ohne eine signifikante Ver{\"a}nderung der graphitischen Struktur durch Kaliumspezies. Anderseits ist die hohe KOH-Konzentration entscheidend f{\"u}r die Bereitstellung von Kaliumverbindungen, die gezielt in die Schichtstruktur des Materials eindringen und diese effektiv aufbrechen.}, subject = {KOH-Aktivierung; Stickstoffmodifizierte Kohlenstoffen; Por{\"o}se Kohlenstoffe; Porenbildung; Katalytischer Effekt von Stickstoff; Porous carbons; Nitrogen-modified carbons; KOH activation; Pore formation; Catalytic effect of nitrogen; Kohlenstoffwerkstoff; Stickstoffverbindungen; Por{\"o}ser Stoff; Aktivierung ; Kaliumhydroxid}, language = {de} } @phdthesis{Nghinaunye2025, author = {Nghinaunye, Teopolina}, title = {Investigation into the potential of 𝘈𝘳𝘵𝘩𝘳𝘰𝘴𝘱𝘪𝘳𝘢 𝘱𝘭𝘢𝘵𝘦𝘯𝘴𝘪𝘴 as a source for anticancer compounds}, doi = {10.26127/BTUOpen-7249}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72493}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Hepatozellul{\"a}res Karzinom (HCC) erfordert sicherere und wirksamere Behandlungsoptionen. In dieser Studie wurde die Zytotoxizit{\"a}t eines w{\"a}ssrigen Extrakts von Arthrospira platensis (AP), der unter optimierten Bedingungen kultiviert wurde, an humanen Upcyte-Hepatozyten aus kanzer{\"o}sem und nicht-kanzer{\"o}sem Gewebe untersucht. AP zeigte einen konzentrationsabh{\"a}ngigen zytotoxischen Effekt, der gezielt die Krebszellen angriff, w{\"a}hrend nicht-kanzer{\"o}se Zellen weniger beeintr{\"a}chtigt wurden. Dies deutet auf ein selektives Antikrebspotenzial hin. Der hohe Gehalt an bioaktiven Verbindungen wie Phycocyanin k{\"o}nnte zu diesem Effekt beitragen. Die Ergebnisse st{\"u}tzen die Einsch{\"a}tzung, dass AP eine vielversprechende Quelle f{\"u}r nat{\"u}rliche Antikrebsverbindungen darstellt.}, subject = {Antikrebsverbindungen; Arthrospira platensis; Hepatozellul{\"a}res Karzinom; Optimierte Kulturbedingungen; Upcyte humane Hepatozyten; Anticancer compounds; Hepatocellular carcinoma; Optimized culture conditions; Upcyte human hepatocytes; Krebsforschung; Leberzellkrebs; Spirulina platensis; Cytotoxizit{\"a}t}, language = {en} } @phdthesis{Popiela2025, author = {Popiela, Bartosz Maciej}, title = {Einfluss fertigungsbedingter Eigenspannungen auf die Betriebssicherheit von nassgewickelten Composite-Druckbeh{\"a}ltern mit einem nichttragenden Liner}, doi = {10.26127/BTUOpen-7238}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72383}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Im Hinblick auf die globale Herausforderung der Energietransformation steigt der Bedarf an M{\"o}glichkeiten zur Energiespeicherung. Eine Technologie, die zunehmend in den Fokus r{\"u}ckt, ist die Energiespeicherung mittels komprimiertem Wasserstoffgas. Insbesondere f{\"u}r mobile und Transport-Anwendungen ist eine geringe Masse des Speichers vorteilhaft, weshalb vollumwickelte Composite-Druckbeh{\"a}lter des Typs 4 zum Einsatz kommen. Diese werden {\"u}berwiegend im Nasswickelverfahren gefertigt, das durch zahlreiche Prozessparameter und physikalische Effekte charakterisiert wird. Die Wahl der Wickelprozessparameter sowie Schwankungen der Materialkennwerte beeinflussen den Eigenspannungszustand in der Composite-Struktur eines Druckbeh{\"a}lters. Somit wirken sie sich auch auf den Spannungszustand im Betrieb aus. Die vorliegende Dissertation beinhaltet Untersuchungen des Einflusses von fertigungsbedingten Eigenspannungen auf die Sicherheit von Composite-Druckbeh{\"a}ltern mit nichttragendem Kunststoff-Liner. Ziel ist es, das mechanische Verhalten von Composite-Druckbeh{\"a}ltern besser zu verstehen und deren Sicherheitsniveau sowie Konkurrenzf{\"a}higkeit weiter zu steigern. Schwerpunkte der Arbeit sind experimentelle Untersuchungen der Eigenspannungsentstehung und -entwicklung sowie deren Einfluss auf die Beh{\"a}lter-Sicherheit. Im Fokus befindet sich die Exploration von M{\"o}glichkeiten zur Verbesserung der Zuverl{\"a}ssigkeit der Beh{\"a}lter durch Variation der Fertigungsparameter und eine Konditionierung nach der Fertigung. Der Eigenspannungszustand wird in numerischen Simulationen sowie mit dem zerst{\"o}renden Bohrlochverfahren charakterisiert. Die {\"U}berwachung der Spannungsumlagerung w{\"a}hrend einer Konditionierung unter Zeitstandbelastung erfolgt mit eingebetteten faseroptischen Sensoren, die sp{\"a}ter zur Dehnungsmessung in zerst{\"o}renden, langsamen Berstpr{\"u}fungen eingesetzt werden. Zur Vertiefung des Verst{\"a}ndnisses des Versagensverhaltens der verwendeten 6,8 l-Druckbeh{\"a}lter wird die Finite-Elemente-Methode eingesetzt. Dar{\"u}ber hinaus werden Qualit{\"a}tsuntersuchungen der Composite-Struktur mittels Mikro-Computertomographie und Impuls-Echo-Verfahren beschrieben. Die Ergebnisse der Untersuchungen zeigen, dass eine Steigerung der Zuverl{\"a}ssigkeit durch eine gezielte Innendruckbeanspruchung der gewickelten Beh{\"a}lter nahezu kostenneutral m{\"o}glich ist. Dies wird im Rahmen der Arbeit anhand eines Baumusters demonstriert. Dar{\"u}ber hinaus wird die Verbesserung der Zuverl{\"a}ssigkeit der Beh{\"a}lter im Rahmen einer Konditionierung unter Zeitstandbelastung vertieft diskutiert. Diese stellt eine weiterf{\"u}hrende M{\"o}glichkeit dar, das Beh{\"a}lterverhalten positiv zu beeinflussen und das Sicherheitsniveau zu steigern.}, subject = {Composite; Druckbeh{\"a}lter; Eigenspannungen; Faser-Kunststoff-Verbund; Wasserstoff; Composite material; Pressure vessel; Residual stress; Hydrogen; Fibre reinforced plastic; Energiespeicherung; Druckbeh{\"a}lter; Faserverst{\"a}rkter Kunststoff; Nasswickelverfahren; Eigenspannung}, language = {de} } @phdthesis{Afitiri2025, author = {Afitiri, Abdul-Rahaman}, title = {Development of a solar water disinfection treatment system for sustainable water use in developing countries}, doi = {10.26127/BTUOpen-7247}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72471}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Direct dependence on surface water poses a threat to human health when consumed without treatment. While solar water disinfection treatment systems (SODIS) help improve the quality of surface water for rural households, SODIS approaches, implementation, and adoption have some limitations. Consequently, this study developed a hybrid water disinfection treatment system at the laboratory scale, integrating novel Advanced Oxidation Processes (AOP). Additionally, surface water quality, the challenges, and enablers of effective implementation of SODIS in rural Ghana were assessed. Two hybrid disinfection systems in continuous flow with reactor volumes of 300 ml each were operated. The disinfection of Staphylococcus aureus in the hybrid disinfection system achieved a 99.60\% reduction at 360 min, while complete disinfection (100\%) was achieved with photocatalyst integration without regrowth after post-treatment storage for 24 hr. A proportionate 96.24\% disinfection rate was achieved for Salmonella senftenberg within 360 min in the hybrid disinfection system while 100\% disinfection was achieved with the integration of a photocatalyst. Similarly, no regrowth of Salmonella senftenberg was observed after 24 hr post-treatment storage. The disinfection of Bacillus subtilis was optimized from 95.46\% in the hybrid treatment system to 99.99\% in the hybrid system with photocatalyst within 360 min. Furthermore, a disinfection proportion of 99.97\% was achieved in the hybrid system at 360 min, while 100\% disinfection was achieved with the hybrid disinfection system at 300 min for Escherichia coli with the integration of photocatalyst. No Escherichia coli re-growth was observed after a 24 hr post treatment storage. The water quality index generated based on the surface water quality assessment showed that all surface water sources are polluted largely due to total and faecal coliforms. The results proved that SODIS can serve as a suitable water treatment approach for adoption in the Sawla-Tuna-Kalba (STK) District. Out of 1155 respondents, 97\% of the respondents are willing to accept and adopt a SODIS. Based on the findings, the enablers of effective SODIS implementation were willingness to pay for SODIS, household and community participation, and willingness to use water from SODIS. The identified barriers to the implementation of SODIS were environmental, technological, political and legal, and economic barriers. Compositional and contextual factors such as age, marital status, education, religion, and geographical location significantly mediate and attenuate households' willingness to accept and adopt SODIS in the STK District of Ghana.}, subject = {Water disinfection; Optimization; Photocatalyst; Solar water disinfection treatment systems; Willingness to accept; Wasserdesinfektion; Optimierung; Photokatalysator; SODIS; Bereitschaft zur Annahme; Region Savannah; Solartechnik; Desinfektion; Oberfl{\"a}chenwasser; Photokatalysator}, language = {en} } @misc{OPUS4-7096, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2026,01 (09.01.2026)}, doi = {10.26127/BTUOpen-7096}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70963}, year = {2026}, abstract = {Neufassung der fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Angewandte Naturwissenschaften B.Sc. vom 08. Januar 2026}, language = {de} } @article{MathiazhaganKimVeginietal.2025, author = {Mathiazhagan, Akilan and Kim, Dongsuk and Vegini, George and Montemurro, Marco and Baltag, Serghei and Asli, Majid and H{\"o}schler, Klaus}, title = {Design strategies for enhancement of mechanical behaviour of hybrid cellular structures based on schwarz primitive geometry}, series = {Materials \& Design}, volume = {240}, journal = {Materials \& Design}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0264-1275}, doi = {10.1016/j.matdes.2025.115161}, year = {2025}, abstract = {Hybrid cellular structures are gaining attention for their multi-functionality in load-bearing, heat-transfer, and energy-absorption applications. Schwarz Primitive (SCP)-based geometries, a subclass of Triply Periodic Minimal Surfaces (TPMS), with their high surface area, tunable properties, and continuous topology, provide strong potential for such applications. To further enhance mechanical performance and stability, this work conducts a thorough investigation of hybrid designs that integrate SCP TPMS with Kelvin truss-based geometries, combining the high connectivity of TPMS with the reinforcement and directional stiffness benefits of struts. A theoretical strain-based homogenization framework was implemented over a design matrix that independently varies the relative densities of the SCP and the truss geometries, quantifying how each constituent proportion influences the overall mechanical response of the hybrid. These predictions were corroborated by finite element analyses in ANSYS 2023 and by mechanical testing of 3D-printed polylactic acid samples, providing independent validation of homogenization trends across orientations. The resulting formulation enables rapid property mapping, sensitivity analysis, and optimization of SCP-Kelvin hybrids, thereby reducing the prototyping effort while guiding application-based design selection and customization.}, subject = {Lightweight design; Anisotropy control; Homogenization; Triply periodic minimal surfaces; Periodic open cellular structures}, language = {en} } @techreport{HackenbergWeidnerLangetal.2025, type = {Working Paper}, author = {Hackenberg, Sinah and Weidner, Silke and Lang, Christian and Lange, Mara and Prokesova, Laura and Reinhardt, Annsophie and Rudolph, Marie and Schneider, Anne-Kathrin and Schneider, Emilia and Siemeister, Frederik and Stix, Charlotte and Strom, Johannes and Tauber, Eric and Murimets, Natalia}, title = {Manifest f{\"u}r einen offenen Campus}, issn = {2941-7406}, doi = {10.26127/BTUOpen-7200}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72004}, year = {2025}, abstract = {Der Campus der BTU Cottbus-Senftenberg und die Stadt Cottbus stehen in einem wechselseitigen, potenzialreichen Verh{\"a}ltnis zueinander: W{\"a}hrend die Universit{\"a}t kontinuierlich Impulse f{\"u}r Wissen, Innovation und kulturelle Vielfalt gibt, bietet Cottbus mit seinem historischen, sozialen und r{\"a}umlichen Gef{\"u}ge einen inspirierenden Kontext f{\"u}r Lehre, Forschung und st{\"a}dtisches Leben. Dennoch ist der Campus r{\"a}umlich wie funktional vom Stadtkern getrennt. Neben physischen Barrieren erschweren auch mentale Hemmschwellen und eine geringe Nutzungsvielfalt seine Integration in den {\"o}ffentlichen Raum. Im Seminar „Beteiligungsprozesse in Stadt- und Regionalplanung" untersuchten Studierende daher, wie r{\"a}umliche, programmatische und soziale „Trittsteine" geschaffen werden k{\"o}nnen, um den Campus st{\"a}rker mit dem st{\"a}dtischen Alltag zu verkn{\"u}pfen. Ausgangspunkt war eine Analyse informeller Beteiligungsverfahren, aus der ein „Katalog der Beteiligung" als methodischer Werkzeugkasten hervorging. Darauf aufbauend realisierten die Studierenden zwei konkrete Formate: eine Zukunftswerkstatt mit {\"u}ber f{\"u}nfzig Teilnehmenden sowie einen Stadtspaziergang, der den Campus als Teil des {\"o}ffentlichen Raums erfahrbar machte. Die Ergebnisse wurden in einer Ausstellung pr{\"a}sentiert und in einem Manifest zusammengef{\"u}hrt, das konkrete Handlungsempfehlungen an die Stadt Cottbus und die BTU formuliert. Ziel ist es, den Campus als offenen, urbanen Freiraum f{\"u}r alle Stadtbewohner:innen zu verankern und die Trennung zwischen Universit{\"a}t und Stadt nachhaltig zu {\"u}berwinden.}, subject = {Offener Campus; Stadtentwicklung; Stadtmanagement; Campus f{\"u}r alle; Stadt als Campus; Citydevelopment; Citymanagement; University; Urban campus; Participation; Cottbus; Campus; Stadtteilplanung; Strategisches Management; B{\"u}rgerbeteiligung; {\"O}ffentlicher Raum; Freifl{\"a}che; Stadtgr{\"u}n; Biodiversit{\"a}t; Barrierefreiheit}, language = {de} } @techreport{NowakowskiWiechers2025, type = {Working Paper}, author = {Nowakowski, Jan and Wiechers, Henk}, title = {Leitstrategien nachhaltiger Mobilit{\"a}t im l{\"a}ndlichen Tourismus : Handlungsans{\"a}tze in der Lausitz am Beispiel des Spreewaldes und des Lausitzer Seenlandes}, issn = {2941-7406}, doi = {10.26127/BTUOpen-7177}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71775}, year = {2025}, abstract = {Das Working Paper untersucht Leitstrategien nachhaltiger Mobilit{\"a}t im l{\"a}ndlichen Tourismus am Beispiel der Lausitz, mit Fokus auf die Tourismusregionen Spreewald und Lausitzer Seenland. Grundlage ist das Konzept der drei Leitstrategien nachhaltiger Mobilit{\"a}t - Suffizienz (vermeiden), Konsistenz (verlagern) und Effizienz (verbessern) -, die als strategischer Rahmen f{\"u}r eine sozial-{\"o}kologische Mobilit{\"a}tswende etabliert sind. Eine systematische {\"U}bertragung auf die touristische Mobilit{\"a}t blieb bislang jedoch weitgehend unber{\"u}cksichtigt. Ziel der Untersuchung ist es, Handlungsans{\"a}tze nachhaltiger touristischer Mobilit{\"a}t in beiden Regionen zu identifizieren und den Leitstrategien zuzuordnen. Methodisch kombiniert das Working Paper eine qualitative Dokumentenanalyse von zw{\"o}lf tourismusbezogenen Konzeptpapieren mit drei leitfadengest{\"u}tzten Expert*inneninterviews. Die Analyse ergibt f{\"u}nf zentrale Handlungsans{\"a}tze: (1) Ausbau des {\"O}PNV, (2) Qualifizierung des Fahrradtourismus, (3) Antriebswende {\"u}ber E-Mobilit{\"a}t, (4) Besucher*innenlenkung sowie (5) G{\"a}stekarten mit kostenfreier Nutzung des {\"O}PNV. Die Ergebnisse zeigen, dass bestehende Handlungsans{\"a}tze vorrangig auf Optimierung (Effizienz) und Verlagerung (Konsistenz) setzen. Eine tiefgreifende Transformation touristischer Mobilit{\"a}t erfordert jedoch auch die Integration suffizienzorientierter Strategien. Nur die kombinierte Anwendung aller drei Leitstrategien bietet die M{\"o}glichkeit, die Herausforderungen nachhaltiger touristischer Mobilit{\"a}t in l{\"a}ndlichen R{\"a}umen umfassend zu bew{\"a}ltigen.}, subject = {Nachhaltige Mobilit{\"a}t; Tourismus; Nachhaltigkeitsstrategien; Spreewald; Lausitzer Seenland; Tourism; Sustainble mobility; Lusatian Lakeland; Spreewald; Lausitzer Seenland; Spreewald; Tourismus; Mobilit{\"a}t; Nachhaltigkeit}, language = {de} } @phdthesis{Shubhani2025, author = {Shubhani,}, title = {Greening the institutions : curatorial activism's impact on environmental awareness in South India}, doi = {10.26127/BTUOpen-7195}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71950}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {This practice-based PhD explores the pivotal role of curators in enhancing the relationship between audiences and environmental art projects, focusing on the transformative potential of curatorial activism in the unique cultural context of India. Employing the counterhegemonic strategy of the relational approach, this research examines curatorial activism across various institutional settings. Through a practice-based methodological design, this project evaluates the efficacy of cultural institutions to communicate environmental crises and climate science to the public. It aims to generate a rich, original inquiry by organising exhibitions and events collaborating with environmental activists, artists, and institutions. This thesis highlights the curator's role as a researcher, educator, and mediator, bridging the gap between environmental art activism and curatorial discourse. Critical analysis of audience engagement in curated events like 'Who will Speak: Me? You? Or Nobody?' (2022), 'Waking up to the Fierce Urgency' (2022), and 'Ink \& Ecology: Eco-stories for a Sustainable Future' (2023) vividly demonstrate the profound impact of combining relational strategies with curatorial practices. This research significantly contributes to curatorial discourse and environmental art theory by questioning how curatorial activism can enhance audience engagement and foster transformative impacts, inspiring curators to recognise the power of their roles in shaping public discourse. The conceptual framework draws on Maura Reilly's curatorial activism and the scholarly reflections of Jean-Paul Martinon and Irit Rogoff on curatorial knowledge events. The insights of activist artist Ravi Agarwal and cultural critic TJ Demos on contemporary Indian environmental art practices further inform this study, emphasising a move beyond aesthetic approaches to critical curating. By intersecting political ecology with curatorial activism, this research meticulously analyses curatorial strategies and their ethical responsibilities towards the environmental crisis. It identifies current trends, evaluates the impact of curated projects, and investigates the relationship between institutional frameworks and art activism. The study strongly asserts that in the Indian context, curatorial activism, enriched with cultural and regional nuances, cannot just emerge but also stand as a potent tool for advancing politicised and critical curatorial practices, underlining the urgency and importance of this research.}, subject = {Activist art; Audience engagement; Curatorial activism; Environmental art; Relational approach; Aktivistische Kunst; Publikumsbeteiligung; Kuratorischer Aktivismus; Umweltkunst; Relationaler Ansatz; Indien (S{\"u}d); Kunstverein; Kulturverein; Veranstaltung; Ausstellung; Kuratieren; Kunst; Politische {\"O}kologie; Publikum; Beteiligung}, language = {en} } @phdthesis{Lehniger2025, author = {Lehniger, Kai}, title = {Stack buffer overflow attacks and countermeasures with register windows on the example of Xtensa LX}, doi = {10.26127/BTUOpen-7226}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72262}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Stack buffer overflows are vulnerabilities that occur due to missing bounds checks when writing data into local buffers. These vulnerabilities have been exploited for decades and persist until today due to the usage of popular programming languages like C and C++, which allow arrays to be accessed without any checks. Over the years a wide variety of countermeasures was introduces, ranging from static analysis to various forms of runtime checks. Register windows are a hardware architecture feature that was developed for Reduced Instruction Set Computer (RISC) architectures to reduce the overhead for function calls and returns due to the necessary load and store instructions. With register windows, a processor is equipped with a large number of registers, but only a part, the register window, is visible to the program. With a function call, the register window moves to a new set of registers for the function to use. When the function returns, the register window moves back. The physical register set is used like a ring buffer and if it overflows, an exception interrupts the program execution to save the content of the overflown registers to the stack. Underflow exceptions on the other hand are responsible to restore the content when the control flow returns to a function that had its registers overflown. With return addresses, stack pointers, and function arguments being held in registers, often being targeted by stack buffer overflow attacks, the register window mechanism has a direct influence on these attacks and their countermeasures. This thesis investigates these influences using the Xtensa Lx architecture as an example, as it is used in the popular ESP32 microcontroller. In a first part, window overflows and underflows are used to craft stack buffer overflow based attacks, with a focus being Return-Oriented Programming (ROP). A second part investigates selected countermeasures, including canaries, XOR cookies, shadow stacks, and encryption. Here the focus is how these countermeasures can or need to be adjusted in order to be used with register windows or how register windows can be used to improve performance or security. A following chapter addresses specific aspects of the implementation of said countermeasures. All countermeasure implementations have been evaluated using Bristol/Embecosm Embedded Benchmark Suite (BEEBS), a collection of 80 benchmarks for embedded devices, to show their performance for a wide variety of use-cases. The presented results show the potential of register windows to implement very performant countermeasures against stack buffer overflow attacks.}, subject = {Buffer overflow; IT-security; Xtensa; Register window; Puffer{\"u}berl{\"a}ufe; Registerfenster; IT-Sicherheit; Gegenmaßnahmen; Angriffe ; Puffer{\"u}berlauf; Computersicherheit; Gegenmaßnahme}, language = {en} } @article{EltaherBreuss2025, author = {Eltaher, Mahmoud and Breuß, Michael}, title = {Deep learning for unsupervised 3D shape representation with superquadrics}, series = {AI}, volume = {6}, journal = {AI}, number = {12}, publisher = {MDPI}, address = {Lausanne}, issn = {2673-2688}, doi = {10.3390/ai6120317}, year = {2025}, abstract = {The representation of 3D shapes from point clouds remains a fundamental challenge in computer vision. A common approach decomposes 3D objects into interpretable geometric primitives, enabling compact, structured, and efficient representations. Building upon prior frameworks, this study introduces an enhanced unsupervised deep learning approach for 3D shape representation using superquadrics. The proposed framework fits a set of superquadric primitives to 3D objects through a fully integrated, differentiable pipeline that enables efficient optimization and parameter learning, directly extracting geometric structure from 3D point clouds without requiring ground-truth segmentation labels. This work introduces three key advancements that substantially improve representation quality, interpretability, and evaluation rigor: (1) A uniform sampling strategy that enhances training stability compared with random sampling used in earlier models; (2) An overlapping loss that penalizes intersections between primitives, reducing redundancy and improving reconstruction coherence; and (3) A novel evaluation framework comprising Primitive Accuracy, Structural Accuracy, and Overlapping Percentage metrics. This new metric design transitions from point-based to structure-aware assessment, enabling fairer and more interpretable comparison across primitive-based models. Comprehensive evaluations on benchmark 3D shape datasets demonstrate that the proposed modifications yield coherent, compact, and semantically consistent shape representations, establishing a robust foundation for interpretable and quantitative evaluation in primitive-based 3D reconstruction.}, subject = {3D shape representation; Superquadrics; Deep learning; Unsupervised learning; Point clouds; Geometric modeling}, language = {en} } @article{SchuetzReissMooretal.2025, author = {Sch{\"u}tz, Raphael and Reiss, Franzika and Moor, Irene and Kaman, Anna}, title = {Lonely children and adolescents are less healthy and report less social support : a study on the effect of loneliness on mental health and the moderating role of social support}, series = {BMC Public Health}, volume = {25}, journal = {BMC Public Health}, publisher = {Springer Nature}, address = {Heidelberg}, issn = {1471-2458}, doi = {10.1186/s12889-025-23247-5}, year = {2025}, abstract = {Loneliness among children and adolescents has been increasingly recognized as a public health issue, for example, because of its associations with mental health problems. Nevertheless, there is a lack of evidence regarding the links between loneliness and mental health and the potential buffering role of social support. Thus, this study aims to investigate the prevalence of loneliness among children and adolescents in Germany and its associations with mental health. Furthermore, we analyze whether social support is negatively correlated with loneliness and mental health problems and whether it acts as a moderator of the association between loneliness and mental health issues. This study analyzed data from the Health Behavior in School-aged Children (HBSC) survey in Germany in 2022, which included 6,475 students aged 11, 13, and 15 years (girls: 50,6\%, Mage = 13,4, SD = 1,7). Loneliness was measured via the University of California-Los Angeles Scale (UCLA) and a single-item measure. The mental health indicators included subjective health, life satisfaction, and multiple psychosomatic complaints. Social support from family, teachers, and classmates was assessed. Chi-square tests, t tests, logistic regressions, and moderation analyses were conducted. A total of 17.2\% of the students reported high levels of loneliness. Compared with boys, girls and gender diverse students reported higher rates of loneliness. High levels of loneliness were strongly linked to poorer subjective health (OR = 5.56, p <.001), lower life satisfaction (OR = 7.32, p <.001), and increased psychosomatic complaints (OR = 7.38, p <.001). High social support from family, teachers, and students was associated with reduced loneliness and better mental health outcomes. Teacher support in grades 7 and 9 buffered the effect of loneliness on multiple psychosomatic complaints. The findings highlight that loneliness is a prevalent phenomenon among children and adolescents and is strongly associated with mental health issues. Greater social support is linked to reduced loneliness and better mental health, so targeted interventions to promote social support in schools and families are needed to address loneliness. Future research should explore longitudinal relationships and further elucidate the mechanisms underlying these associations.}, subject = {Loneliness; Mental health; HBSC; Children; Adolescents}, language = {en} } @phdthesis{Mitseva2025, author = {Mitseva, Asya}, title = {State of affairs in online user privacy : assessing real-world user information leakages and designing effective and practical countermeasures}, doi = {10.26127/BTUOpen-7214}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72142}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {The Tor network ensures confidentiality of user data over the Internet and hides the IP addresses and relationships between communication partners to avoid user profiling and censorship. However, Tor cannot hide the number, direction, and timing of transmitted packets. Two types of attackers - autonomous systems (AS) and malicious Tor nodes - can exploit this for sophisticated attacks, such as website fingerprinting (WFP) and end-to-end traffic correlation, or fingerprinting attacks revealing the Tor users' location. On the other hand, in case of a malicious first Tor node or a malicious AS on the path between the user and the Tor network, the scalability of prior WFP attacks remains questionable due to impractical assumptions. This dissertation aims to provide a more realistic assessment of the exposure of Tor users to passive deanonymization attacks from different perspectives. First, we conduct a comprehensive review of fundamental Border Gateway Protocol (BGP) threats. We present a methodology for evaluating existing BGP security proposals and provide an extensive and up-to-date survey of proposals intended to make BGP secure and methods for detecting and mitigating routing instabilities. Based on the identified research gaps and unresolved challenges, we analyze the current level of resilience of Tor and two alternative Tor path selection methods against malicious ASs. While we detect a notable increase in the Tor's resilience to BGP attacks over the years, when measured from a Tor user to its first Tor node, the resilience provided by the alternative path selection methods on the way back, i.e., from the first Tor node to a Tor user, has decreased notably compared to the resilience measured on the forward path for these methods. Moreover, these methods tend to select first Tor nodes in a predictable manner, resulting in the exposure of users' locations to Tor middle nodes. We also show novel attacks against a state-of-the-art method for measuring bandwidth capabilities of Tor nodes, allowing a low-bandwidth attacker to gain notably higher bandwidth estimates than theoretically defined. We propose a novel lightweight defense against malicious Tor nodes, performing WFP or end-to-end traffic correlation, that splits user traffic over multiple Tor paths. Our defense is fully implemented on the user side, reducing deployment costs and making it independent of the underlying anonymization network. We also propose a metric that is capable of quantifying the user's location leakage considering a malicious Tor middle node. This metric enables Tor users to avoid specific first Tor nodes by strategically selecting those from which their location cannot be revealed. Finally, we examine the real-world scalability of WFP, especially against Tor users who visit several pages of a single website consecutively. We propose both a novel WFP attack and efficient strategies for adapting existing methods to account for sequential visits of pages within a website.}, subject = {Tor network; Traffic analysis; Website fingerprinting; Website fingerprinting defenses; Datenverkehrsanalyse; Anonyme Kommunikation; Onion routing; Datenschutz im Internet; Border Gateway Protocol (BGP); Computersicherheit; Tor ; Border Gateway Protocol}, language = {en} } @article{AhmedStraub2025, author = {Ahmed, Naveed and Straub, Andrea}, title = {A practical approach for measuring Chemical Oxygen Demand (COD) of Fats, oils, and grease (FOG) using tween 80 in wastewater}, series = {ChemEngineering}, volume = {9}, journal = {ChemEngineering}, number = {6}, publisher = {MDPI}, address = {Lausanne}, issn = {2305-7084}, doi = {10.3390/chemengineering9060138}, year = {2025}, abstract = {This study aims to estimate the organic load of oily wastewater by using Chemical Oxygen Demand (COD) measurements, addressing the analytical challenges posed by the hydrophobic, nonpolar, and often emulsified nature of Fats, oil and grease (FOG). This study established a reproducible and practical methodology for measuring COD in wastewater containing FOG at a laboratory scale, utilizing the nonionic surfactant T80 as a solubilizing and emulsifying agent. Precise gravimetric methods were employed to measure the mass of T80 (indirectly from volume (100-1400 µL/L)) added, and its correlation with COD was established. A strong linear relationship (R2 = 0.993-0.998) between T80 concentration and COD confirmed its stability and suitability as a calibration standard. Experiments with sunflower (1-4 mL/L) and rapeseed oils (1-3 mL/L) showed that COD increased linearly with oil concentration and stabilized after prolonged mixing (96-120 h), indicating complete emulsification and micellar equilibrium. Even under T80 overdose conditions, COD retained linearity (R2 > 0.99), though absolute values were elevated due to excess surfactant oxidation. Temperature variation (5 and 20 °C) and mild heating of coconut fat (30-32 °C) showed no significant effect on COD reproducibility, indicating that mixing time and surfactant dosage are the dominant factors influencing measurement accuracy. Overall, the study establishes T80 as a reliable surfactant for solubilizing oily matrices, providing a consistent and repeatable approach for COD assessment of wastewater containing FOG. The proposed method offers a practical basis and a step towards environmental monitoring and process control in decentralized and industrial wastewater treatment systems.}, subject = {Chemical oxygen demand; Fat; Oil; Wastewater; Tween 80}, language = {en} } @inproceedings{OPUS4-7129, title = {Book of open problems : 11th workshop on graph classes, optimization, and width parameters (GROW 2024)}, editor = {Beisegel, Jesse and Scheffler, Robert and K{\"o}hler, Ekkehard}, doi = {10.26127/BTUOpen-7129}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71295}, year = {2025}, abstract = {The Workshop on Graph Classes, Optimization, and Width Parameters (GROW) series of workshops brings together experts in both theoretical and practical issues to design new strategies for dealing with intractable graph problems. Its 11th edition, GROW 2024, was hosted by the Brandenburg University of Technology, Faculty of Mathematics, Computer Science, Physics, Electrical Engineering and Information Technology, Cottbus, Germany, from September 9-12, 2024. This booklet contains descriptions of open problems presented at GROW 2024.}, subject = {Graph theory; Graph classes; Graph parameters; Graph algorithms; Graphenalgorithmen; Graphklassen; Graphparameter; Graphentheorie; Graphentheorie}, language = {en} } @misc{OPUS4-7095, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2025,35 (10.12.2025)}, doi = {10.26127/BTUOpen-7095}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70951}, year = {2025}, abstract = {1. Erste {\"A}nderungssatzung zur fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Micro- and Nanoelectronics (M.Sc.) vom 10. Dezember 2025 2. Lesefassung: Fachspezifische Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Micro- and Nanoelectronics (M.Sc.) vom 15. M{\"a}rz 2024 (AMbl. 03/2024) i. d .F. der Ersten {\"A}nderungssatzung zur Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Micro- and Nanoelectronics (M.Sc.) vom 10. Dezember 2025}, language = {de} } @article{AssafoLangendoerfer2025, author = {Assafo, Maryam and Langend{\"o}rfer, Peter}, title = {Tool remaining useful life prediction using feature extraction and machine learning-based sensor fusion}, series = {Results in Engineering}, volume = {28}, journal = {Results in Engineering}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2590-1230}, doi = {10.1016/j.rineng.2025.107297}, year = {2025}, abstract = {Tool remaining useful life prediction (RUL) is a critical task for predictive maintenance in manufacturing. Common limitations of existing data-driven solutions include: 1) Dependence on tool wear labels which are intricate to obtain on shop floors. 2) High resource requirements, affecting applicability on resource-constrained Internet-of-things devices. 3) Heavy feature engineering. To address these limitations, we present a methodology aiming at accurately predicting RUL without using wear labels, while ensuring implementation efficiency and minimal feature engineering. It involves extracting time-domain features and multiscale features using maximal overlap discrete wavelet transform (MODWT) from three cutting-force sensor signals. Without undergoing any feature selection or dimensionality reduction, the features are fed to machine learning (ML) regression models where they are fused into an RUL decision. For this purpose, one-to-one and sequence-to-sequence regression using random forest (RF) and different long short-term memory (LSTM) networks were used, respectively. The 2010 PHM Data Challenge milling dataset was used for validation. The results highlighted the significant role of sensor fusion in reducing prediction errors and increasing the performance consistency over three test cutters, compared to single sensors. Global interpretations were provided using RF-based feature importance analysis. Our methodology was compared with six existing state-of-the-art works, including different end-to-end deep learning (DL) models using raw data as input, and works coupling heavy feature engineering with DL. The results showed that our methodology consistently outperformed all the comparative methods over the test cutters, despite using fewer sensors, which further proves its competitiveness and suitability in resource- and sensor-constrained environments.}, subject = {Cutting tool; Data-driven models; Feature extraction; Machine learning; Predictive maintenance}, language = {en} } @phdthesis{Holy2025, author = {Holy, Felix}, title = {Dynamische Simulationen und experimentelle Untersuchungen zur Entwicklung einer Hochtemperatur-Carnot-Batterie}, doi = {10.26127/BTUOpen-7202}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72020}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Die Energiewende erfordert flexible, effiziente und wirtschaftlich tragf{\"a}hige Speicherl{\"o}sungen, um den stetig wachsenden Anteil erneuerbarer Energien systemdienlich zu integrieren. Carnot-Batterien (CB) bieten hierf{\"u}r ein vielversprechendes Konzept zur sektoren{\"u}bergreifenden Speicherung elektrischer Energie in Form thermischer Energie mit anschließender R{\"u}ckverstromung. Insbesondere Hochtemperatur-Carnot-Batterien (HTCB) mit Speichertemperaturen {\"u}ber 1.000 °C zeichnen sich durch hohe Energiedichten, ein hohes exergetisches Potenzial und eine kosteng{\"u}nstige Systemarchitektur aus leicht verf{\"u}gbaren Speichermaterialien aus. Die vorliegende Arbeit widmet sich der Entwicklung, experimentellen Untersuchung und dynamischen Simulation eines solchen HTCB-Systems. Hierzu wird ein neuartiger Hochtemperaturspeicher (HTS) mit horizontaler Durchstr{\"o}mung und integrierter elektrischer Beladung entworfen, der Beladetemperaturen bis 1.200 °C erreicht und eine thermische Kapazit{\"a}t von etwa 10 MWh aufweist. Die R{\"u}ckverstromung erfolgt {\"u}ber einen extern beheizten Gasturbinenprozess mit einer Mikrogasturbine im elektrischen Leistungsbereich von 30 kW. Unter Voraussetzung eines atmosph{\"a}risch betriebenen HTS erweist sich diese Prozessf{\"u}hrung im station{\"a}ren und thermodynamischen Vergleich zu alternativen Gasturbinenprozessen als besonders geeignet. Im experimentellen Betrieb wird eine 45-st{\"u}ndige R{\"u}ckverstromung der zuvor im HTS gespeicherten thermischen Energie demonstriert. Dabei werden elektrische Wirkungsgrade von bis zu 16,5 \% sowie Gesamtwirkungsgrade von bis zu 60,0 \% unter Ber{\"u}cksichtigung der ausgespeisten W{\"a}rme gemessen. Im Fokus der Arbeit liegt die Entwicklung eines flexiblen und physikalisch-deterministischen Simulationsmodells der HTCB, das alle wesentlichen Komponenten auch im Off-Design abbildet. Unter anderem wird f{\"u}r die dynamische Modellierung des HTS und der W{\"a}rme{\"u}bertrager ein innovativer numerischer Ansatz zur Ber{\"u}cksichtigung der Wandtemperaturprofile entwickelt. Die Parametrisierung und der Abgleich mit umfangreichen experimentellen Messdaten erm{\"o}glichen eine Anpassung und Validierung des Gesamtmodells der HTCB. Das Ergebnis ist ein digitaler Zwilling der Versuchsanlage, der realit{\"a}tsnah das dynamische Systemverhalten abbildet und als Grundlage f{\"u}r die Betriebs- und Designoptimierung der HTCB dient. Mit der aufgezeigten Drehzahloptimierung der Mikrogasturbine und dem entwickelten Beladungsmanagement des HTS lassen sich mit der Versuchsanlage elektrische Round-Trip Efficiencies von 14,1 \% und Gesamtwirkungsgrade von 61,9 \% im PV-Strom gef{\"u}hrten Tageszyklus erzielen. Abschließend wird die Skalierung der HTCB auf industrielle Maßst{\"a}be untersucht. F{\"u}r HTS-Systeme mit einer Speicherkapazit{\"a}t von 140 MWh in Kombination mit einer Gasturbine im elektrischen Leistungsbereich von 1,8 MW werden eine elektrische Round-trip Efficiency von etwa 29 \% und Gesamtwirkungsgrade bis 84 \% prognostiziert.}, subject = {Hochtemperaturspeicher; Gasturbine; Simulation; Dynamik; Speicher; High temperature energy storage; Gas turbine; Dynamics; Simulation; Elektrischer Speicher; Hochtemperatur; Gasturbine; Simulation; Digitaler Zwilling; Optimierung}, language = {de} } @phdthesis{GhomsiWabo2025, author = {Ghomsi Wabo, Samuel}, title = {Aktivierung stickstoffmodifizierter Kohlenstoffmaterialien mit KOH : Untersuchungen zum Porenbildungsprozess sowie zum Stickstoffaustrag}, doi = {10.26127/BTUOpen-7219}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72194}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {In dieser Arbeit wurden der Aktivierungsprozess und der Stickstoffaustrag w{\"a}hrend der KOH-Aktivierung stickstoffmodifizierter Kohlenstoffmaterialien untersucht, um die spezifischen und synergistischen Beitr{\"a}ge von Stickstoff und KOH zur Porosit{\"a}tsbildung in diesen Materialien zu kl{\"a}ren. Hierf{\"u}r wurden geeignete Referenzsysteme aus verschiedenen Kohlenstoffquellen (Cellulose und Phenolharz) hergestellt, bei denen Syntheseparameter wie der Harnstoffgehalt, die KOH-Konzentration und die Karbonisierungstemperatur systematisch variiert wurden. Es wurde festgestellt, dass eine Erh{\"o}hung des Harnstoffgehalts in der Synthesemischung zu einem h{\"o}heren Stickstoffgehalt in den Charcoals f{\"u}hrt - ein Effekt, der bei cellulosebasierten Materialien ausgepr{\"a}gter ist. Die KOH-Aktivierung f{\"u}hrte, unabh{\"a}ngig von der verwendeten Kohlenstoffquelle, zu einem erheblichen Stickstoffaustrag. Bei hohen KOH-Konzentrationen (> 10 M) war kein Stickstoff mehr im Material nachweisbar, was eng mit der Bildung einer ausgepr{\"a}gten Porosit{\"a}t zusammenh{\"a}ngt. Allerdings zeigte sich, dass der Gewinn an Porenvolumen durch den Austrag stickstoffhaltiger Spezies relativ gering ist. Stickstoff wirkt haupts{\"a}chlich als Katalysator f{\"u}r Redoxreaktionen zwischen KOH bzw. dessen Zersetzungsprodukten und Kohlenstoff, indem er die Bildung von K₂CO₃ beg{\"u}nstigt. Diese Kaliumspezies k{\"o}nnen die graphitische Struktur des Materials zerst{\"o}ren und zus{\"a}tzliche chemische Prozesse unterst{\"u}tzen, was zu einer intensiveren Aktivierung f{\"u}hrt. Die Bildung von K₂CO₃ ist stark vom Stickstoffgehalt abh{\"a}ngig und wurde ausschließlich bei Kohlenstoffen beobachtet, die mit einer Kombination aus hoher KOH-Konzentration und hohem Stickstoffgehalt hergestellt wurden. Im Gegensatz dazu f{\"u}hrte eine Kombination aus hoher KOH-Konzentration und niedrigem Stickstoffgehalt nicht zur Bildung von K₂CO₃, was darauf hinweist, dass die chemischen Wechselwirkungen des Kaliums in diesem Szenario eine untergeordnete Rolle bei der Porosit{\"a}tsbildung spielen. In solchen F{\"a}llen erfolgt die Aktivierung des Materials prim{\"a}r {\"u}ber Redoxreaktionen, bei denen Kohlenmonoxid (CO) und Kohlendioxid (CO₂) als Reaktionsprodukte entstehen. Diese Redoxreaktionen bewirken eine Umstrukturierung des Materials, jedoch ohne eine signifikante Ver{\"a}nderung der graphitischen Struktur durch Kaliumspezies. Anderseits ist die hohe KOH-Konzentration entscheidend f{\"u}r die Bereitstellung von Kaliumverbindungen, die gezielt in die Schichtstruktur des Materials eindringen und diese effektiv aufbrechen.}, subject = {KOH-Aktivierung; Stickstoffmodifizierte Kohlenstoffen; Porous carbons; Nitrogen-modified carbons; KOH activation; Pore formation; Catalytic effect of nitrogen; Por{\"o}se Kohlenstoffe; Porenbildung; Katalytischer Effekt von Stickstoff; Kohlenstoffwerkstoff; Stickstoffverbindungen; Por{\"o}ser Stoff; Aktivierung ; Kaliumhydroxid}, language = {de} } @misc{OPUS4-7094, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2025,34 (04.12.2025)}, doi = {10.26127/BTUOpen-7094}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70944}, year = {2025}, abstract = {Beitragsordnung der Studierendenschaft der Brandenburgischen Technischen Universit{\"a}t Cottbus-Senftenberg vom 18. November 2025 f{\"u}r das Sommersemester 2026}, language = {de} } @article{ErtugrulEmdadiHaertel2025, author = {Ertugrul, G{\"o}khan and Emdadi, Aliakbar and H{\"a}rtel, Sebastian}, title = {Powder production and additive manufacturing of iron aluminide alloys using plasma ultrasonic atomization and laser-directed energy deposition}, series = {Additive Manufacturing Letters}, volume = {14}, journal = {Additive Manufacturing Letters}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2772-3690}, doi = {10.1016/j.addlet.2025.100313}, year = {2025}, abstract = {With a combination of desirable properties such as low density, high specific yield strength, low material cost, and excellent oxidation and corrosion resistance, iron aluminide (Fe-Al) has shown considerable potential to be an alternative to high-alloy chromium steels, and in some cases even nickel-based superalloys, in hightemperature applications. Due to these features, it is especially suitable for the aerospace and automotive industries. Recent advancements indicate an increasing interest in Fe-Al within the additive manufacturing industry, particularly in directed energy deposition (DED) processes. Despite this progress, processing of Fe-Al materials using the laser directed energy deposition (L-DED) has not been sufficiently investigated. In this study, Fe-Al powder material was produced from a commercial Al rod encased in a commercial low alloy-steel tube by a plasma-based ultrasonic atomization eliminating the need to cast an alloy ingot in advance. Subsequently, the produced powder was used in a L-DED process to fabricate an additively manufactured sample. The sample was investigated in terms of mechanical property, microstructure, chemical composition, and phase structure by scanning electron microscope (SEM) / energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), electron backscatter diffraction (EBSD) and microhardness analyses.}, subject = {Iron aluminides (Fe-Al); Laser directed energy deposition (L-DED); Plasma ultrasonic atomization; Powder; Intermetallic phase}, language = {en} } @article{AsliMhgoubKlaus2025, author = {Asli, Majid and Mhgoub, Mosaab and Klaus, H{\"o}schler}, title = {Numerical investigation of a turbine working with a highly unsteady exhaust flow of a hydrogen-driven rotating detonation combustion}, series = {International Journal of Thermofluids}, volume = {29}, journal = {International Journal of Thermofluids}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2666-2027}, doi = {10.1016/j.ijft.2025.101356}, year = {2025}, abstract = {Traditionally, turbomachines are designed for steady-state operations around which they achieve optimal performance and efficiency. However, in novel applications, a turbomachine may be exposed to unsteady flow forcing the machine to operate under fluctuating off design conditions. Pressure Gain Combustion (PGC) through detonation can be an extreme example of unsteady flow which affects the turbine performance adversely. The efficient way of energy extraction from PGCs is still an open question which needs extensive turbine design optimizations for such unsteady flow. Any flow field optimization problem in such applications needs a multitude of simulations, which can be too computationally expensive to be utilized as it is realized as an unsteady 3D-CFD problem. In this regard, the current study aims at proposing and evaluating an approach for optimizing a turbine working under highly unsteady exhaust flow of a Rotating Detonation Combustion (RDC). A two stage turbine is placed downstream an RDC and the turbine inlet condition is calculated by a 2D-Euler simulation tool. A turbine optimization problem is defined and three optimization processes with an objective of minimizing entropy are performed using steady-state 3D-CFD simulation as the objective function evaluator. The turbine inlet boundary conditions in the three optimization efforts include peak, mean and trough values of the RDC outlet pulsating flow condition. Finally, detailed unsteady simulations are carried out for the three new geometries and compared with the baseline turbine. The results showed that the steady-state Reynolds Averaged Navier Stocks (RANS) simulations can be utilized using either mean or trough values of the pulsating boundary condition in iterating a design optimization problem, instead of full unsteady RANS simulations applying time and circumferential location dependent boundary conditions. Given the specific RDC boundary condition and the turbine geometry in this study, the optimized turbine exhibited up to 7.71\% less entropy generation and up to 7\% higher output power compared to the baseline counterpart in unsteady operation. This approach enables a more efficient design optimization process while accounting for the complex dynamics of the RDC exhaust flow. Overall, the approach presented in this paper is practical for optimizing highly unsteady turbomachines specifically for the case of RDCs during any early design optimization procedure, addressing the computational challenges associated with simulating unsteady flows while ensuring the turbine's effectiveness under real operating conditions.}, subject = {Unsteady turbine; Entropy generation; Rotating detonation; Optimization; Computational fluid dynamic}, language = {en} } @article{LeunerHirschlBezerraetal.2025, author = {Leuner, Bruna and Hirschl, Bernd and Bezerra, Pedro Henrique and Pedrosa Quintino, Wellington and Bezerra, Roberta and Cavalcante Silva, Rodolfo}, title = {Indigenous bioeconomy in Brazil : how to determine the local biomass potential in indigenous territories}, series = {Journal of Integrative Environmental Sciences}, volume = {22}, journal = {Journal of Integrative Environmental Sciences}, number = {1}, publisher = {Taylor \& Francis}, address = {London}, issn = {1943-8168}, doi = {10.1080/1943815X.2025.2566009}, year = {2025}, abstract = {The increased expansion of agricultural areas in central Brazil has been cited as a contributing factor to deforestation, soil degradation and water pollution. The impact of this expansion extends beyond the boundaries of the territory of the Xavante indigenous group. These protected areas have experienced a marked decline in available food resources and an unreliable energy supply. The term "indigenous bioeconomy" represents a holistic approach that aims to enhance the well-being of indigenous communities. It recognises indigenous knowledge and promotes the sustainable use of resources. The indigenous bioeconomy contributes to climate protection, by avoiding deforestation and replacing the use of fossil fuels in isolated areas with biogenic alternatives. This paper analyses the local biomass potential of a community within the Pimentel Barbosa Indigenous Territory of the Xavante ethnic group. Participatory research was employed to gain an in-depth understanding of the customary Xavante practices. The theoretical biomass potential was estimated at around 2700 tonnes per year (t/a), which is defined as the total amount of selected biomass types available in the investigated area. Local practical biomass potential considers the per capita consumption of this biomass by the indigenous population. Furthermore, the authors quantified the unused biomass potential, representing biomass that could be used for various purposes including food, medicine and energy. Biomass residues have an untapped potential of around 180 t/a. The paper outlines possible utilisation scenarios for these residues and considers the challenges associated with food and energy security in indigenous territories.}, subject = {Indigenous bioeconomy; Local biomass potential; Cerrado biome; Xavante}, language = {en} } @techreport{SchmidtFuegenschuh2025, type = {Working Paper}, author = {Schmidt, Johannes and F{\"u}genschuh, Armin}, title = {Inter-sample avoidance in trajectory planning via an integer-polytope formulation for mixed-integer optimization}, doi = {10.26127/BTUOpen-7169}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71697}, year = {2025}, abstract = {Autonomous vehicles such as drones or mobile robots must plan trajectories that avoid static obstacles. Their dynamics are captured by Newton's laws and discretized numerically, so the vehicle's position is tracked only at finitely many sample points. The resulting information gap allows a path to cut through an obstacle while still appearing feasible at all samples, a phenomenon called corner cutting. Finer time grids mitigate but never eliminate this artefact and increase computation time. We propose a new inter-sample avoidance scheme for polyhedral obstacles. The facet-defining half-spaces partition the three-dimensional mission space into sub-domains that we encode with binary sign vectors. Feasible one-step moves correspond to a specific subset of these vectors; we (i) enumerate that set exhaustively and (ii) give an integer-polytope formulation that enforces it without additional state variables or extra time steps. For planar motion with a single triangular no-fly zone we prove that the formulation is tight-the polytope equals the convex hull of its 0/1 points. The method is compared qualitatively with existing inter-sample avoidance techniques and its limitations are discussed. Computational experiments with a mixed-integer linear programming model for UAV mission planning, solved by Gurobi, demonstrate that the new formulation achieves realistic trajectories at competitive, or lower, solution times.}, subject = {Mixed-integer optimization; Inter-sample avoidance; Trajectory planning; Convex hull; Unmanned aerial vehicles; Gemischt-ganzzahlige Optimierung; Trajektorienplanung; Konvexe H{\"u}lle; Unbemannte Luftfahrzeuge; Drohne (Flugk{\"o}rper); Autonomes System; Bahnplanung; Gemischt-ganzzahlige Optimierung; Konvexe H{\"u}lle}, language = {en} } @phdthesis{Ampadu2025, author = {Ampadu, Kwame Owusu}, title = {Road traffic gesture autonomous integrity monitoring}, doi = {10.26127/BTUOpen-7222}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72226}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Sensor enabled smart vehicles are predicted to succeed beyond human capabilities, thereby eliminating handling errors intrinsic to human driving. Driverless vehicles must be capable of detecting and responding to exaggerated ad hoc bodily movements that humans use to maintain road traffic safety. These nonverbal communication cues may be used to ease traffic flow, control infotainment systems or restore minimal risk conditions. The integration of sensor fusion techniques and high-quality benchmark datasets coupled to high throughput general purpose graphics processing units is spawning complex heavyweight algorithms useful for traffic scene understanding. These advanced methods are expensive in terms of costs related to hardware, software and energy consumption. Yet, the autonomous vehicle lacks the ability to participate in gestural exchanges. Following extensive evaluations of recent technological advancements in gesture detection and recognition in dynamic traffic environments, a new communication technology has been created for interaction between autonomous and traditional vehicles at unsignalized four-way intersections. This system operates without relying on most conventional navigation sensors and algorithms, allowing autonomous vehicles to communicate with traditional vehicles at intersections through in-vehicle traffic lights that utilize fuzzy logic. The algorithm implemented on low-cost microcontrollers can disperse road traffic and also perform extended blind spot detection. A single sensor is utilized, which remains largely unaffected by adverse weather conditions. The system requires no internet connectivity. It also avoids the need for large scale or long-term data storage, such as the driving cloud platform, ensuring backward compatibility with traditional vehicles. Simulations were conducted based on the order and direction of arrival at three junctions. Results have shown that autonomous vehicles at four-legged intersections, can now communicate with human drivers at a much lower cost achieving precise location classification and lane dispersion in under 30 seconds. This pioneering innovation presents an opportunity to turn every four-way intersection into a signalized junction at zero cost to governments.}, subject = {Advanced Driver Assistance System (ADAS); Autonomous vehicle; Fuzzy logic; Gesture recognition; In-vehicle traffic light; Fahrerassistenzsystem; Autonomes Fahrzeug; Fuzzy-Logik; Gestenerkennung; Fahrzeugintegrierte Ampel; Autonomes Fahrzeug; Fahrerassistenzsystem; Gestenerkennung; Fuzzy-Logik}, language = {en} } @incollection{SchmittWendland2021, author = {Schmitt, Rebecca Erika and Wendland, David}, title = {Untersuchung der geometrischen Konzeption der Gew{\"o}lbe der Basilika Vierzehnheiligen auf Basis von 3D-Scanningdaten im Kontext der Stereotomie}, series = {Materialgerecht konstruiert!?! Tagungsband der F{\"u}nften Jahrestagung der Gesellschaft f{\"u}r Bautechnikgeschichte 10. bis 11. Juni 2021}, booktitle = {Materialgerecht konstruiert!?! Tagungsband der F{\"u}nften Jahrestagung der Gesellschaft f{\"u}r Bautechnikgeschichte 10. bis 11. Juni 2021}, publisher = {Michael Imhof Verlag}, address = {Petersberg}, isbn = {978-3-7319-1253-8}, doi = {10.26127/BTUOpen-6411}, publisher = {BTU Cottbus - Senftenberg}, pages = {105 -- 121}, year = {2021}, abstract = {Betrachtet wird die geometrische Konzeption der Gew{\"o}lbe der von Balthasar Neumann entworfenen Wallfahrtskirche Vierzehnheiligen. Ausgehend vom gebauten Objekt und basierend auf 3D-Scanningdaten, werden mithilfe der Methode des Reverse Geometric Engineering die geometrischen Eigenschaften des Gew{\"o}lbes untersucht und die Konzepte rekonstruiert, die bei der Planung zur Anwendung gekommen sein m{\"u}ssen. Dabei werden die Abteikirche Banz und die Hofkirche der Residenz W{\"u}rzburg als Vergleichsbauten mit einbezogen. Die Entwurfsmethoden werden in ihrem Zusammenhang mit den zeitgen{\"o}ssischen Traktaten der Stereotomie und Architektur, sowie mit bekannten Planungspraktiken bei geometrisch komplexen Bauten betrachtet; dabei wird auch der Bezug zu den Gew{\"o}lbeentw{\"u}rfen des italienischen Barockarchitekten Guarino Guarini diskutiert.}, subject = {Geometrischer Entwurf; Gew{\"o}lbe; Vierzehnheiligen; Balthasar Neumann; Geometric design; Vault; Fourteen Holy Helpers; Reverse engineering; Baustoffkunde und -chemie; Baukonstruktionen; Geschichte der Baukonstruktionen und -technologien}, language = {de} } @article{GhermannZander2025, author = {Ghermann, Diana E. and Zander, Thorsten O.}, title = {Towards neuroadaptive chatbots : a feasibility study}, series = {Front. Neuroergonomics}, volume = {6}, journal = {Front. Neuroergonomics}, publisher = {Frontiers}, address = {Lausanne}, issn = {2673-6195}, doi = {10.3389/fnrgo.2025.1589734}, year = {2025}, abstract = {Large-language models (LLMs) are transforming most industries today and are set to become a cornerstone of the human digital experience. While integrating explicit human feedback into the training and development of LLM-based chatbots has been integral to the progress we see nowadays, more work is needed to understand how to best align them with human values. Implicit human feedback enabled by passive brain-computer interfaces (pBCIs) could potentially help unlock the hidden nuance of users' cognitive and affective states during interaction with chatbots. This study proposes an investigation on the feasibility of using pBCIs to decode mental states in reaction to text stimuli, to lay the groundwork for neuroadaptive chatbots. Two paradigms were created to elicit moral judgment and error-processing with text stimuli. Electroencephalography (EEG) data was recorded with 64 gel electrodes while participants completed reading tasks. Mental state classifiers were obtained in an offline manner with a windowed-means approach and linear discriminant analysis (LDA) for full-component and brain-component data. The corresponding event-related potentials (ERPs) were visually inspected. Moral salience was successfully decoded at a single-trial level, with an average calibration accuracy of 78\% on the basis of a data window of 600 ms. Subsequent classifiers were not able to distinguish moral judgment congruence (i.e., moral agreement) and incongruence (i.e., moral disagreement). Error processing in reaction to factual inaccuracy was decoded with an average calibration accuracy of 66\%. The identified ERPs for the investigated mental states partly aligned with other findings. With this study, we demonstrate the feasibility of using pBCIs to distinguish mental states from readers' brain data at a single-trial level. More work is needed to transition from offline to online investigations and to understand if reliable pBCI classifiers can also be obtained in less controlled language tasks and more realistic chatbot interactions. Our work marks preliminary steps for understanding and making use of neural-based implicit human feedback for LLM alignment.}, subject = {Passive brain-computer interfaces (pBCI); Large-language models (LLM); Error-processing; Moral judgment; AI alignment}, language = {en} } @misc{DechantPietsch2025, type = {Master Thesis}, author = {Dechant, Silke and Pietsch, Ina}, title = {20 Jahre ATA - Erfolgsgeschichte oder Problemfeld? : eine qualitative Studie zur Integration und Etablierung eines noch jungen Berufes als Qualifizierungsweg f{\"u}r den an{\"a}sthesiologischen Funktionsdienst}, doi = {10.26127/BTUOpen-7180}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71806}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {In dieser Forschungsarbeit soll 20 Jahre nach Beginn der ersten Ausbildung die Etablierung der An{\"a}sthesietechnischen Assistenz (ATA) als Berufsgruppe f{\"u}r den an{\"a}sthesiologischen Funktionsdienst unter dem Aspekt der Anerkennungs- und Professionalisierungstheorie untersucht werden. F{\"u}r den Einsatz im an{\"a}sthesiologischen Funktionsdienst haben sich verschiedene Qualifikationswege herausgebildet. Dabei {\"u}berwiegt bisher der traditionelle Weg {\"u}ber eine grundst{\"a}ndige Pflegeausbildung. Die Entwicklung der Fachkr{\"a}ftesituation im Pflegesektor allgemein und speziell im Arbeitsbereich OP zeigt eine große L{\"u}cke zwischen Personalbedarf und -angebot und stellt f{\"u}r die Zukunft eine Herausforderung dar. Leitfadengest{\"u}tzte Experteninterviews wurden mit Mitarbeiter/-innen aller Berufsgruppen des an{\"a}sthesiologischen Funktionsdienstes aus deutschen Krankenh{\"a}usern der verschiedenen Versorgungsstufen gef{\"u}hrt und mit dem qualitativen Forschungstool der Grounded Theory ausgewertet. Ergebnisse: Der Beruf der ATA ist noch nicht fl{\"a}chendeckend in deutschen Krankenh{\"a}usern etabliert. Im Gegensatz zum traditionellen Qualifizierungsweg {\"u}ber eine Pflegeausbildung sind ATA direkt nach Abschluss ihrer Ausbildung fachlich gut auf den Einsatz am an{\"a}sthesiologischen Arbeitsplatz vorbereitet. Trotzdem erwies sich, dass bei den anderen Mitarbeiter/-innen des an{\"a}sthesiologische Funktionsdienstes Vorbehalte gegen{\"u}ber ATAs bestehen k{\"o}nnen. Urs{\"a}chlich zeigten sich unter anderem insbesondere in Abteilungen, die mit ihnen bisher keinen direkten beruflichen Kontakt hatten, große Wissensdefizite zur Ausbildung und Qualifizierung von ATAs. Eine intraprofessionelle Anerkennung des ATA-Berufes ist nicht generell gegeben. Zudem erwies sich als Nebenbefund der OP insgesamt als hierarchiegepr{\"a}gter Arbeitsbereich im Spannungsfeld verschiedener Berufsgruppen. Als zentrales Ergebnis konnte aufgrund unterschiedlicher Kontextfaktoren ein symbolischer Kampf des gesamten nicht{\"a}rztlichen an{\"a}sthesiologischen Funktionsdienstes um Anerkennung herausgestellt werden. Auch 20 Jahre nach Beginn der Ausbildung ist die fl{\"a}chendeckende Etablierung von ATAs in deutschen Krankenh{\"a}usern nicht abgeschlossen. Dieser noch junge Beruf zeigt großes Potenzial f{\"u}r eine Erfolgsgeschichte. Aus dieser Forschungsarbeit ergaben sich wichtige Erkenntnisse und Ans{\"a}tze zur {\"U}berwindung aktuell noch bestehender Problemfelder hin zur fl{\"a}chendeckenden Integration und Etablierung.}, subject = {ATA; Anerkennung des ATA-Berufes; Qualifizierungsweg f{\"u}r An{\"a}sthesie-Funktionsdienst; Etablierung des ATA-Berufes; Anesthesia technical assistant; Recognition as anesthesia technical assistand; Specialization pathway in anesthesia care; Establishment of the anesthesia technical assistant profession; An{\"a}sthesietechnischer Assistent; Berufliche Qualifikation; An{\"a}sthesie; Professionalisierung}, language = {de} } @phdthesis{Goergen2025, author = {G{\"o}rgen, Fabian}, title = {Improving thermal comfort in urban areas : experiment-based development, computational modelling, and performance evaluation of a water-retaining fa{\c{c}}ade module (WRFM)}, doi = {10.26127/BTUOpen-7201}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72019}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Both ongoing urbanization and anthropogenic climate change contribute to the deterioration of thermal comfort in urban areas, reducing quality of life and posing health risks for urban dwellers. As a response, this thesis focuses on the development and investigation of a novel water-retaining fa{\c{c}}ade module (WRFM) that is expected to increase thermal comfort through evaporative cooling, based on natural convection. First, for the design of a water-absorbing layer, selected porous materials were investigated for their hygric and physical properties. The laboratory tests served as the basis for the experiment-based development of a prototype of the WRFM, which was subsequently introduced. Building upon the experimental investigations, a coupled simulation workflow was developed, integrating various software tools to simulate location-specific evaporation rates of the WRFM, considering local microclimatic parameters and evaluating its impact on thermal comfort in an urban context. The coupled simulation workflow was calibrated against in-situ measurements. Subsequently, the effects of the WRFM on the urban environment were investigated in various case studies using the validated coupled simulation workflow. The results of the laboratory investigations revealed favourable material properties of pumice granules, as well as their durability and resistance, underlining their suitability for use as a water-absorbing layer within the WRFM. The calibration process of the workflow's sub models showed a strong fit between measured and final simulated results, validating the coupled simulation workflow as a reliable tool for simulating heat and mass transfer within the WRFM. Evaluating the effects of the WRFM on thermal comfort showed that applying the WRFM to a building fa{\c{c}}ade notably decreased the Physiological Equivalent Temperature (PET) during the day, with slight increases observed during night-time. This effect was mainly attributed to both the increased albedo and the increased specific heat capacity of the WRFM. The WRFM demonstrates potential for improving thermal comfort in urban areas. The developed coupled simulation workflow provides a climate-friendly and location-specific planning tool, which can be used to customize and tailor adaptation strategies, such as the WRFM, to a specific location. The findings of this thesis thus serve as a foundation for future investigations into the WRFM and its potential integration into sustainable urban planning strategies.}, subject = {Thermal comfort; Urban microclimate; Evaporative cooling; Water-retaining fa{\c{c}}ade module; Coupled simulation workflow; Thermische Behaglichkeit; Urbanes Mikroklima; Verdunstungsk{\"u}hlung; Wasserspeicherndes Fassadenmodul; Gekoppelter Simulationsworkflow; Fassade; Wasseraufnahme; Verdunstungsk{\"u}hlung; Behaglichkeit; Stadtklima; Stadtleben}, language = {en} } @inproceedings{OPUS4-7215, title = {Neuroadaptive Technology Conference 2025 Proceedings (NAT'25)}, editor = {Klug, Marius and Zander, Thorsten}, doi = {10.26127/BTUOpen-7215}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-72151}, year = {2025}, abstract = {Neuroadaptive Technology (NAT) continues to advance the integration of real-time neurophysiological measures into adaptive intelligent systems. The Neuroadaptive Technology Conference 2025 (NAT'25), held in Berlin, Germany, brought together scientists and practitioners from neuroscience, computer science, engineering, and the social sciences, alongside representatives from politics, industry, and funding agencies. The conference emphasized both scientific and societal dimensions of neuroadaptive systems, particularly their implications for ethics, policy, and innovation ecosystems. Current developments showcased at NAT'25 highlight how neuroadaptive methods are being extended beyond the laboratory to real-world applications through Brain-Artificial Intelligence Interfaces (BAIs), explainable and neuroadaptive AI (XAI/NAI), and multimodal physiological computing. A recurrent theme across sessions was the societal responsibility accompanying the increasing agency of neuroadaptive and AI-driven systems — from workplace and healthcare applications to autonomous technologies. The programme included six keynote lectures, invited panels, and over forty peer-reviewed contributions covering Brain-Computer and Brain-AI Interfaces, Human-AI Co-Adaptation, Neuroadaptive Systems in Society, Ethics and Regulation, and Machine Learning for Applied Neuroscience. NAT'25 thus marked a further consolidation of the field toward human-aligned, context-sensitive, and socially responsible artificial intelligence.}, subject = {Machine learning; Artificial intelligence; Physiological computing; Brain-computer interface; Neuroadaptive technology; K{\"u}nstliche Intelligenz; Maschinelles Lernen; Neuroadaptive Technologie; K{\"u}nstliche Intelligenz; Maschinelles Lernen; Gehirn-Computer-Schnittstelle; Neurowissenschaften}, language = {en} } @misc{Kwarteng2025, type = {Master Thesis}, author = {Kwarteng, Ferdinand Prempeh}, title = {Security requirements and mechanisms for real-time serverless computing : a focus on Function-as-a-Service (FaaS)}, doi = {10.26127/BTUOpen-7164}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71645}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Serverless computing, particularly its Function-as-a-Service (FaaS) offering, has emerged as a prominent cloud computing model empowering developers to craft event-driven applications by deploying custom application logic in an ephemeral runtime environment. This model abstracts away the underlying infrastructure complexities and management overhead, offering key benefits such as Pay-As-You-Go (PAYG) billing and automated scalability. Although Real-Time (RT) extensions to FaaS (RT-FaaS) have been proposed for realizing the functional requirements of industrial automation virtualization use cases, these architectures introduce distinct security challenges that generic security mechanisms cannot fully address. As a result, RT-FaaS platforms remain vulnerable to both internal and external threats and a variety of exploitation vectors that can compromise the Confidentiality, Integrity and Availability (CIA) security properties of such a platform. The aim of this thesis is to assess the core security requirements of a RT-FaaS platform by evaluating potential vulnerabilities and risks within this environment. We further propose specifically tailored mitigation mechanisms based on the extended Berkeley Packet Filter (eBPF) and cryptographic digital signatures for a RT-FaaS platform with a WebAssembly (WASM) runtime to enhance its resilience without imposing prohibitive performance overheads. Key areas of focus for this work include RT-FaaS runtime isolation, continuous security enforcement and data protection. We evaluated the proposed security mitigation mechanisms on the platform accounting for both effectiveness and performance. By doing so, we discuss the trade-offs between the stringent security requirements and maintaining predictable, low-latency execution essential for industrial automation use cases. While we observed some considerable jitter and latency overheads on the secure RT-FaaS platform, these did not significantly impact the functional performance of the platform. Hence adopting serverless computing for RT industrial automation use cases is feasible while ensuring robust function, system and network security.}, subject = {Serverless computing; Real-time Function-as-a-Service; Industrial automation; Security mechanisms; WebAssembly runtime; Serverloses Computing; Echtzeit-Funktion-als-Dienstleistung; Industrielle Automatisierung; Sicherheitsmechanismen; WebAssembly-Laufzeitumgebung; Serverless Computing; Function as a Service; Sicherheit; Datenschutz}, language = {en} } @phdthesis{ArvidssondeMontes2025, author = {Arvidsson de Montes, Fredrik}, title = {Spider ecology across scales : from microhabitats to landscapes in natural and managed habitats}, doi = {10.26127/BTUOpen-7190}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71906}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Spiders (Araneae) are an exceptionally diverse group, with over 52,000 described species worldwide. They are among the most dominant predators in terrestrial ecosystems and occur on every continent except Antarctica. Spiders play a key role in maintaining biodiversity and ecosystem functioning and acts as important natural enemies of pests in managed habitats. Their communities are influenced by both abiotic and biotic factors, and as a higher trophic group, they are sensitive to environmental changes, making them effective bioindicators. A key driver of spider community composition is the structural complexity of their surroundings, which is influenced by factors such as plant species richness. Greater structural complexity is generally associated with increased prey availability and accessibility, as well as improved microclimatic conditions, which together promote higher spider abundance and diversity. Human activities can both enhance and reduce this structural complexity through various management practices. In this thesis, I have investigated spider communities across a broad geographical span, covering Sweden, Germany, and South Africa, in both natural and managed habitats. Depending on the research question, different trapping techniques were employed, each with its own advantages and limitations, to best capture the relevant ecological information. For large-scale studies comparing sites across broad geographic areas, passive traps such as pitfall traps and Malaise traps were used. In contrast, for studies within habitats, such as orchards, spiders and their prey were hand-collected to assess how different management practices affect spider-mediated pest control. Additionally, one study directly compared traditional scientific surveys with citizen science data to evaluate their relative effectiveness in capturing spider biodiversity and mapping their geographical distribution. This research highlights the intricate relationships between spider communities and their environment. By deepening our understanding of these dynamics, the findings can contribute to conservation strategies and guide land management practices that enhance the role of spiders as natural enemies of pests. In an era of rapid environmental change, such knowledge is increasingly valuable. As a further benefit, this research may help improve public perception of spiders, emphasizing their importance in the ecosystems we all depend on.}, subject = {Spider; Identification; Population; Microhabitat; Ecology; Spinne; Identifikation; Mikrohabitat; {\"O}kologie; Spinnen; Habitat; R{\"a}uber-Beute-Verh{\"a}ltnis; {\"O}kologie; Naturschutz}, language = {en} } @phdthesis{Uka2025, author = {Uka, Naim}, title = {Influence of international law on the issue of missing persons : the right of family members to know the fate of missing persons}, doi = {10.26127/BTUOpen-7183}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71839}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {The issue of missing persons remains a pressing humanitarian and legal challenge, particularly in post-conflict societies. This dissertation examines the influence of international law on addressing the fate of missing persons, with a specific focus on the right of family members to truth and justice. The study explores the existing legal frameworks, including International Humanitarian Law (IHL) and Human Rights Law (HRL), to assess their effectiveness in ensuring the rights of families to receive information about their missing relatives. It critically analyzes legal ambiguities, the role of international institutions, and the impact of partial ratification of key legal instruments on national responses to the missing persons issue. Through a comparative approach, the research investigates the legal, political, and institutional obstacles that hinder the resolution of missing person's cases, with a special emphasis on the Balkans. The study also evaluates the role of civil society organizations in advocating for accountability and truth, assessing their contributions to legal reforms and transitional justice mechanisms. Findings suggest that while international law provides a robust framework for addressing the missing person's crisis, gaps in implementation and political considerations continue to obstruct progress. This research contributes to the ongoing discourse on humanitarian law and human rights by proposing recommendations for strengthening legal mechanisms, enhancing international cooperation, and improving the rights of families to truth, justice, and reparation. The dissertation underscores the necessity of depoliticizing the missing persons issue to ensure that humanitarian concerns take precedence over state interests.}, subject = {Missing persons; International law; Human rights; Forensic science; Transitional justice; Vermisste Personen; V{\"o}lkerrecht; Menschenrechte; Forensische Wissenschaft; {\"U}bergangsjustiz; Balkanhalbinsel; Menschenrecht; Humanit{\"a}res V{\"o}lkerrecht; Vermisster; Aufkl{\"a}rung ; Nachkriegszeit}, language = {en} } @misc{OPUS4-7092, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2025,33 (18.11.2025)}, doi = {10.26127/BTUOpen-7092}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70928}, year = {2025}, abstract = {1. Zweite {\"A}nderungssatzung zur fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Cyber Security (M.Sc.) vom 17. November 2025 2. Lesefassung: Fachspezifische Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Cyber Security (M.Sc.) vom 22. September 2017 (AMbl. 24/2017) i. d. F. der Zweiten {\"A}nderungssatzung zur Pr{\"u}fungs- und Studienordnung f{\"u}r den Master-Studiengang Cyber Security (M.Sc.) vom 17. November 2025}, language = {de} } @phdthesis{Babel2025, author = {Babel, Christoph Josef}, title = {Virtual evaluation of car body panel surfaces}, doi = {10.26127/BTUOpen-7196}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71960}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {The progression of the automotive industry has introduced a slew of complex designs to meet the personalized style expressions of consumers. However, these intricate designs in premium automobiles present significant manufacturing challenges, especially in detecting and prioritizing the varying severities of cosmetic surface defects. Traditionally, defect identification is performed at the end of the development phase, which is a costly and time-consuming process. This thesis seeks to enhance early defect detection efficiency in the concept phase using artificial intelligence (AI). Through examination of unpainted parts, auditors' perceptual practices, and deep draw simulations, the research aims to establish a virtual prediction method to accurately classify surface defects. The findings of this thesis prove that the geometry of unpainted parts sufficiently predicts potential defects post-painting, refuting the need for physical painted part analysis. The identification process adopted by auditors, grounded in analyzing light distortions on surfaces, is replicated within a neural network. Furthermore, by incorporating physiological optical aspects, the thesis improves the virtual representation of defects, creating a visible and analyzable dataset for AI algorithms. The accuracy of the neural networks trained on such datasets is substantiated by the successful translation of auditors' classification methods into a machine learning environment. In particular, a machine learning approach using Random Forest (RF) algorithms excelled in prefiltering areas of interest based on curvature and strain values. A convolutional recurrent neural network (CRNN) is developed to classify the severity of defects, with the introduction of an annotation application to label data by experts. The CRNN demonstrated a remarkable accuracy of 86 \% in classifying defect severity based on simulation data. Moreover, the study assessed the frame-by-frame localization of defects, where the PatchCore anomaly detection algorithm proves optimal, achieving an F1 Score of 0.86. Overall, the research successfully shows the transferability of expert auditors' perception into a neural network architecture, highlighting the feasibility of implementing AI in early phases of automotive design to predict and classify defects, which has the potential to significantly reduce development costs and improve manufacturing efficiency.}, subject = {Computer vision; Neural network; Deep draw simulation; Rendering; K{\"u}nstliche Intelligenz; Maschinelles Lernen; Umformsimulation; Bildgenerierung; Kraftfahrzeugindustrie; Produktentwicklung; Tiefziehen; Fehlererkennung; Simulation; K{\"u}nstliche Intelligenz; Maschinelles Lernen}, language = {en} } @inproceedings{OPUS4-6163, title = {Visualising significance : mapping as common denominator ; proceedings from the 6th International Conference on Heritage Conservation and Site Management Berlin and Cottbus, 5 and 6 December 2018}, editor = {Skedzuhn-Safir, Alexandra}, doi = {10.26127/BTUOpen-6163}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-61630}, year = {2022}, abstract = {Mapping as a tool and method is foremost employed as a means to analyse and organise information visually. We see maps daily: on television or the internet to see what the weather holds in store for us, on the subway to work, or our cellphones while navigating our way through the streets. Regardless of which objects or events maps record, maps help to filter, organise, and visualise information. However, contemporary maps are still criticised for their hegemonic, Eurocentric representations with their inherent claim for knowledge and, ultimately, legitimisation of power. Maps, with their ability to document heritage and its significance across various scales and objects, are not just tools for interpretation and communication. They also have the potential to challenge political agendas and offer alternative perspectives and narratives. The conference proceedings, which are based on case studies, showcase the diverse range of methodological approaches, data, and actors involved in the mapping process. This diversity underscores the complexity of the field and the many ways in which mapping can be approached and utilised.}, subject = {Cultural heritage; Mapping; Cultural significance; Cultural mapping; Visualisation; Kulturelles Erbe; Kartierung; Kulturelle Bedeutung; Kultur Kartierung; Visualisierung; Kulturerbe; Bedeutung; Kartierung; Visualisierung; Informationsfilterung}, language = {en} } @phdthesis{OuaboKamkumo2025, author = {Ouabo Kamkumo, Florent}, title = {Stochastic epidemic models with partial information and dark figure estimation}, doi = {10.26127/BTUOpen-7197}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71976}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {This thesis presents a novel stochastic modeling framework for epidemic dynamics, focusing on the challenges posed by non-observable states and the gradual decline of immunity, as revealed by the Covid-19 pandemic. Our research develops an extended compartmental model that incorporates sequences of cascade states to accurately represent the progressive loss of immunity after vaccination or recovery. This model, rooted in a non-homogeneous continuous-time Markov chain and approximated by a diffusion process, facilitates efficient computation. The resulting dynamics exhibit non-linearities in both the drift and diffusion coefficients, making the process of hidden state estimation particularly challenging. These complexities highlight the need for advanced techniques to accurately capture and predict the system's behavior under partial observability. A novel approach using cascade states is introduced to tackle the issue of partially hidden compartments where either inflow or outflow is observed, but not both. By leveraging information from observed transitions, this method significantly enhances model accuracy. The framework also enables the application of advanced filtering techniques, particularly the Extended Kalman Filter (EKF), for estimating both hidden epidemic states and time-varying parameters. This allows for calibrating based on real data, ensuring robust and accurate predictions. Furthermore, this thesis extends the methodology to multi-group (multi-patch) models, capturing the complexities of heterogeneous population dynamics. This includes factors such as mobility, super-spreader events, and accounting for partial information. By incorporating these elements, the model provides a more comprehensive understanding of epidemic spread across diverse and interconnected populations. To address the curse of dimensionality often encountered in high-dimensional filtering problems, a modified EKF based on a reduced-order EKF is introduced, leveraging a low-rank approximation of the covariance matrix. This reduced-order EKF allows for stable and efficient estimation of hidden states even with limited computational resources. Finally, the work explores parameter estimation within the partial information context, employing both likelihood-based inference and state augmentation techniques. Numerical experiments demonstrate the model's ability to accurately reproduce observed Covid-19 dynamics in Germany, highlighting its potential for informing public health strategies and managing future outbreaks. This work offers a robust and adaptable framework for understanding and predicting the spread of infectious diseases.}, subject = {Compartmental model; Stochastic model; Partial information; Extended Kalman filter; Parameter estimation; Kompartimentmodell; Stochastisches Modell; Teilinformationen; Erweiterter Kalman Filter; Parametersch{\"a}tzung; Stochastische optimale Kontrolle; Kompartimentmodell; Kalman-Filter; Partielle Information}, language = {en} } @phdthesis{Franck2025, author = {Franck, Max}, title = {Synthesis of hexagonal boron nitride on CMOS-compatible substrates via chemical vapor deposition}, doi = {10.26127/BTUOpen-7192}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71925}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {About 20 years ago, the discovery of an easy method to exfoliate single atomic layers of graphene opened the door for the investigation of 2D materials. They often exhibit superior electrical and mechanical properties compared to their 3D counterparts, and in addition, entirely new physical properties emerge at these ultra-low thickness scales, making 2D materials a highly interesting topic of materials research. A large variety of 2D materials with various electrical properties have since been discovered: graphene is a conductor with an extremely high charge carrier mobility, several transition metal dichalcogenides are direct bandgap semiconductors with the bandgap value being dependent on the chemical composition, and hexagonal boron nitride (hBN) is an insulator. This means that, in principle, all the building blocks for 2D microelectronic devices are available, which would mark the ultimate miniaturization. In practice, this vision is far from being realized, as large-scale fabrication methods for 2D materials and their heterostructures are still under development. Hexagonal boron nitride has a large range of applications, as it plays a central role in 2D microelectronics: not only are dielectrics a crucial part of microelectronic devices, but hBN is also necessary to shield other 2D materials from contact with the 3D environment, which causes deterioration of their intrinsic properties. Further potential applications are deep UV optoelectronics, thermal neutron detection, and single-photon emitters for quantum communication. While synthesis of single-crystalline hBN monolayers and high-quality multilayers has been demonstrated on a 2" wafer scale, it relies on catalytic transition metals, such as Cu, as the growth substrates. Obviously, one layer does not a device make, and thus transfer of the grown hBN films is usually employed to fabricate full devices. Unfortunately, this leaves behind metal contaminations at concentrations that are incompatible with the stringent purity requirements in CMOS manufacturing lines. In order to facilitate integration of 2D materials into established CMOS technology, which is deemed the most promising route for their large-scale adoption, synthesis of hBN on CMOS-compatible substrates, such as Si, Ge, and dielectrics, is desirable. At the beginning of my work, almost no literature on this topic was available, especially not for Ge and Si substrates. In this thesis, a growth process for hBN on Ge(001) via high-vacuum chemical vapor deposition is developed. The influence of various process parameters on the morphology, structure, and crystalline quality of the grown films is studied, and the growth process is optimized towards ultra-thin, smooth, and high-quality hBN. Additionally, the efficacy of standard characterization methods is evaluated and alternatives are explored. Furthermore, the optimized growth process is applied to Si(001) and graphene growth substrates, also yielding high-quality hBN films.}, subject = {Chemical vapor deposition; Hexagonal boron nitride; 2D materials; Thin film deposition; Chemische Gasphasenabscheidung; Hexagonales Bornitrid; 2D-Materialien; D{\"u}nnschichtabscheidung; Zweidimensionales Material; D{\"u}nnschichttechnik; Bornitrid; Hexagonaler Kristall; CVD-Verfahren}, language = {en} } @misc{EverthKassner2024, type = {Master Thesis}, author = {Everth, Stefanie and Kaßner, Astrid}, title = {„Die Pflege entwickelt sich weiter" : eine Forschungsarbeit zur Lehre in der Praxis}, doi = {10.26127/BTUOpen-7176}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71762}, school = {BTU Cottbus - Senftenberg}, year = {2024}, abstract = {Die Masterarbeit untersucht das pflegewissenschaftliche und pflegedidaktische Anleitungshandeln sowie die habitualisierten Praktiken von Lehrenden in der Praxis in der pflegeberuflichen Ausbildung. Verglichen werden akademische und berufsbildende Lehrende in der Praxis aus den pflegerischen Settings: akutstation{\"a}r, station{\"a}re Langzeitpflege und ambulante Pflege. Ziel ist es, empirische Erkenntnisse {\"u}ber die Gestaltung der Praxislehre und {\"u}ber das Selbstverst{\"a}ndnis zu gewinnen sowie Entwicklungsm{\"o}glichkeiten aufzuzeigen. Mittels qualitativer Sozialforschung wurden 14 leitfadengest{\"u}tzte Expertinnen- und Experteninterviews mit Lehrenden in der Pflegepraxis nach der Grounded-Theory-Methodologie durchgef{\"u}hrt und ausgewertet. Die Datenanalyse erfolgte durch offenes, axiales und selektives Kodieren inklusive der Anwendung des mentalen Felds als Forschungstool. Die Ergebnisse zeigen, dass die habitualisierten Praktiken im Anleitungshandeln von Lehrenden in der Praxis kontrastierende pflegewissenschaftliche und pflegep{\"a}dagogische Begr{\"u}ndungsmuster aufweisen. Ihr Berufsverst{\"a}ndnis, ihre Kompetenzbildung und Wissensbedarfe beeinflussen maßgeblich die Gestaltung der Praxislehre. Anhand von Fallrekonstruktionen werden unterschiedliche Anleitungsprofile herausgearbeitet. Die Forschungsarbeit begr{\"u}ndet empirisch die Notwendigkeit einer st{\"a}rkeren Professionalisierung der Lehrenden in der Pflegepraxis. Empfehlungen zur hochschulischen Qualifizierung unter Einbindung der berufsbildenden Lehrenden werden abgeleitet.}, subject = {Lehre in der Pflegepraxis; Habitualisierte Praktiken; Pflegeberufliche Ausbildung; Lehrendenprofessionalisierung; Anleitungshandeln; Teaching in nursing practice; Habitualised practices; Nursing education; Professionalisation of teachers; Instructional action; Pflegeberuf; Pflegep{\"a}dagogik; Pflegewissenschaft; Professionalisierung}, language = {de} } @phdthesis{Pomp2025, author = {Pomp, Caron}, title = {Regional innovation systems and structural change in Lusatia}, doi = {10.26127/BTUOpen-7187}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71871}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {The 2015 Paris Agreement called on developed countries to reduce greenhouse gas emissions to prevent the average global temperature from rising above 2°C. To achieve this goal, Germany decided to phase out lignite by 2038 at the latest. Recognising that the phase-out would lead to structural change in lignite mining regions, the government established the Coal Commission, which issued recommendations in its final report on how to manage this structural change. Lusatia, one of Germany's three lignite mining regions, will receive a total of €17.2 billion. This money will be used to fund research and innovation, secure the competitiveness of the regional economy and transform the regional energy system with new technologies and business models. However, the question is whether this unique amount of funding will be sufficient to stimulate regional economic development and green transformation in the rural and peripheral region. This dissertation aims to contribute to answering this question from the perspective of Regional Innovation Systems (RIS). The RIS framework helps to explain the uneven geographical distribution of innovation and serves as a basis for the design and implementation of place-based innovation policies, the promotion of regional innovation capacity and the development of new industrial paths. The work is based on three different studies that focus on certain aspects of the RIS framework. Chapter 2 is dedicated to the question if the strength of German RIS is related to the cooperation for innovation. The study finds that there is indeed a strong positive correlation between the two, which helps to understand why it is useful to foster cooperation and establish new research institutes to improve Lusatia's RIS in the long term. Chapter 3 analyses green path development in the lignite industry and the influence of the respective RIS in the German mining regions. While there was an observable shift towards renewables in the regions, the lignite industry was hardly connected to the three RIS. In addition, especially the lignite industry in Lusatia suffered from technological lock-in and only started to pursue a path renewal after the phase-out decision. The implication is that transforming industries should be supported, but their willingness to transform is likely to depend on changes in regulatory and market conditions at the national or even international level, rather than on RIS conditions. Chapter 4 focuses on the Smart Specialisation approach and analyses if Smart Specialisation in the field of energy is realistic in Lusatia. The study shows that the potential for such specialisation has not been sufficient in the past, but that critical masses can be achieved if the new research facilities and projects actually attract new companies and workers in the long term and if this remains the case after the initial funding has ended.}, subject = {Regional innovation systems; Structural change; Lusatia; Regionale Innovationssysteme; Strukturwandel; Lausitz; Lausitz; Strukturwandel; Regionale Wirtschaftsentwicklung; Innovation}, language = {en} } @phdthesis{Wagner2025, author = {Wagner, Eduard}, title = {Circular data value creation}, doi = {10.26127/BTUOpen-7184}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71846}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {One fundamental problem hindering the achievement of a circular economy is the limited utilisation of data and the persistence of information asymmetries between value chain stakeholders. Although large volumes of data exist across product life cycles, they are often unevenly distributed and lack transparency and collaboration. Digital technologies are increasingly promoted as enablers to bridge these gaps. The discourse and theoretical basis in this context centre on three interlinked elements that must be considered as an integrated system: data, stakeholders, and sustainability. Previous research has tended to analyse these elements separately, while this thesis argues that they need to be studied together to understand under which conditions data can create value for circularity. This provides the rationale for introducing and exploring the concept of circular data value creation (CDVC), a framework that synthesizes these core elements to provide a holistic understanding of how data can generate value within the circular economy. Within this framework, the Digital Product Passport (DPP) is conceptualized as a tool that interlinks these components, supporting a system-of-systems approach. The research unfolds through three studies, each addressing different aspects of the CDVC framework. The first study (article 1) focuses on the role of data as the starting point of potential value retention and creation for circularity. It presents an explorative analysis of a large-scale repair dataset to highlight challenges in data structuring and potential applications for enhancing circularity. This study reveals that stakeholder-generated data, such as repair records, is often underutilized, burdened by non-standardized coding, missing contextualization, and limited sample sizes. The findings underscore the necessity for robust cleaning techniques, harmonization across data formats, and incentives to encourage data sharing. Moving beyond the operational level, the second study (article 2) addresses stakeholder dynamics necessary for effective data utilization. It investigates information asymmetries along product lifecycles, assessing the role of DPPs in mitigating these barriers. The study identifies information barriers rooted in economic, social, and technological constraints and discusses how DPPs could address these. However, while DPPs and other digital tools aim to reduce information barriers, they also introduce environmental costs that must be assessed (article 3). A meta-analysis of life cycle assessments (LCAs) of digital infrastructures, such as those used in DPPs, evaluates whether the sustainability benefits, such as improved repair and reuse, outweigh the carbon footprint of digital systems. The findings show that DPPs can contribute to sustainability, but their impact depends on the extent to which they are adopted and effectively used across the value chain. Integrating theoretical insights with empirical evidence, this thesis offers an understanding of how data, enabled by digital tools, can support circular economy practices. It combines conceptual understanding and practical application. The CDVC framework lays the groundwork for future work, such as the quantification of higher-order sustainability impacts of data-sharing tools or understanding how digital interfaces influence engagement with repair, reuse, and recycling.}, subject = {Circular economy; Digitalisation; Circular data; Digital product passport; Sustainability; Kreislaufwirtschaft; Zirkul{\"a}re Daten; Digitaler Produktpass; Digitalisierung; Nachhaltigkeit; Produktlebenszyklus; Kreislaufwirtschaft; Digitalisierung; Datenaustausch; Nachhaltigkeit}, language = {en} } @phdthesis{Martens2024, author = {Martens, Christian}, title = {A study of the charge and spin order dynamics for cuprate superconductors : a Gutzwiller analysis for the single-band Hubbard model}, doi = {10.26127/BTUOpen-7194}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71945}, school = {BTU Cottbus - Senftenberg}, year = {2024}, abstract = {In recent years, the role of charge density waves (CDW) in the study of high-temperature superconductors, such as cuprates and nickelates, has gained importance, so that CDW can provide potential insights into the mechanism of high-temperature superconductivity. Cuprates and nickelates are transition metals and have their valence electrons in the d-orbitals, which makes them belong to the family of correlated materials. In the past, a variety of experimental techniques, such as X-ray scattering and neutron scattering, have been performed to better understand such materials and the electronic properties of CDWs and spin-density waves (SDWs), which are thought to be connected to high-temperature superconductivity. However, the exact nature of CDW, SDW is not yet fully understood. Often correlated materials are described with the so-called multi-band Hubbard model, which takes into account the Coulomb interactions in d- or f-orbitals with a local parameter U. In the structure of the cuprate high-temperature superconductor LCO, the low-energy electron structure of the CuO2 planes is of interest, as this is where CDW, SDW and 2D high-temperature superconductivity take place. For this reason, the 3-band Hubbard model is often used, which takes into account the interaction of the Cu and O orbitals. Here we describe the time-dependent Gutzwiller approximation (TDGA) for the single-band Hubbard model. The description of a single-band construct for the Hubbard model was discussed in the work of Zhang and Rice, where they assume a hybridisation of the copper atom with the neighbouring oxygen atoms inside the unit cell forming a singlet state. While the Gutzwiller approximation can be solved analytically in one dimension using the Bethe ansatz, for real systems one has to resort either to the exact diagonalisation of small clusters or to approximation methods. We analyse the non-equilibrium dynamics of the electron structure in comparison to the optical conductivity in the linear response and non-equilibrium case. The starting point is the half-filled antiferromagnetic (AF) state, which is forms in LCO at weak hole doping p and allows the description of the stripe state by introducing hole doping near zero temperature. The focus here is on the site-centered and bond-centered stripe states characterized by a domain wall, which possesses an accumulation of hole doping and inverts the spin order. The results of the TDGA are compared with those of the time-dependent Hartree-Fock approximation (TDHF) and, in the case of the stripe states, also with the time-dependent Landau theory (TDL).}, subject = {Charge stripes; Spin stripes; Time-dependent Gutzwiller approximation; Single-band Hubbard model; Zeitabh{\"a}ngige Gutzwiller-Approximation; Ladungs-Stripes; Spin-Stripes; Einband-Hubbard-Modell; Hochtemperatursupraleitung; Cuprate; Ladungsdichtewelle; Spindichtewelle; Elektronenstruktur}, language = {en} } @phdthesis{Roy2025, author = {Roy, Ashley Comma}, title = {Economic analysis of invasive alien species management : a case study of 𝘏𝘢𝘭𝘺𝘰𝘮𝘰𝘳𝘱𝘩𝘢 𝘩𝘢𝘭𝘺𝘴 in Germany}, doi = {10.26127/BTUOpen-7170}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71703}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Invasive alien species (IAS) are major drivers of biodiversity loss and impose rising economic costs. Global trade and climate change facilitate their spread and establishment, threatening agriculture, forestry, and fisheries. Despite recognition of these risks, economic consequences are often underestimated, delaying effective responses. IAS management requires balancing ecological, economic, and social considerations. This study addresses two objectives: (1) to quantify the economic costs of invasive alien species under current and projected climate scenarios, and (2) to evaluate public preferences for IAS management, focusing on the trade-offs between chemical and biological control strategies through a case study of the brown marmorated stink bug (Halyomorpha halys) invasion in German apple orchards. To address the first objective, the study combined a logistic spread model based on climate suitability projections for 2022-2050 with an economic model to estimate invasion costs under four management scenarios: no control, chemical control, biological control, and integrated pest management (IPM). Results show that even early infestations can cause significant economic losses if unmanaged. By 2050, as more areas become suitable for pest establishment, invasion costs rise sharply, demonstrating that delayed intervention greatly increases both damages and resources needed to control the invasion. For the second objective, a discrete choice experiment was employed to understand the public preference for managing IAS using no control, chemical control, and biological control. Respondents strongly favored biological control, even with risks of invasiveness, and rejected no control as an option. Willingness to pay reached €2.32/kg for biological control, while chemical control received moderate support, mainly due to production concerns. Socio-demographic factors such as age, gender, education, income, political orientation, ecological involvement, and risk-taking shaped preferences. Political orientation proved significant: conservative and liberal respondents leaned toward chemical control, while ecologically oriented individuals preferred no intervention. Information framing also mattered: generalized descriptions increased support for biological control, while quantitative details revealed greater heterogeneity. These findings highlight the urgency of early IAS intervention and the need to integrate public preferences into policy. The study provides evidence for developing effective strategies to manage Halyomorpha halys and outlines avenues for future research.}, subject = {Invasion cost; Discrete choice experiment; Halyomorpha halys; German apple orchards; Invasive alien species; Invasionskosten; Discrete-Choice-Experiment; Deutsche Apfelplantagen; Invasive Arte; Deutschland; Obstanlage; Invasive Art; Baumwanzen; Kosten; Kontrolle; Diskrete Entscheidung}, language = {en} } @phdthesis{Hagen2025, author = {Hagen, Veselko}, title = {Cybercrime als hybrides Gesamtph{\"a}nomen : Einzelph{\"a}nomene zwischen digital gepr{\"a}gten Deliktsformen, analoger Strafverfolgung und normativer Einordnung}, doi = {10.26127/BTUOpen-7189}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71893}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Diese Dissertation untersucht das Ph{\"a}nomen Cybercrime in seiner hybriden Auspr{\"a}gung zwischen analog gepr{\"a}gten Tatstrukturen und dem Einsatz digitaler Tatmittel. Ziel ist es dabei, ein strukturorientiertes Verst{\"a}ndnis zu entwickeln, das die wachsende Komplexit{\"a}t digital geformter Kriminalit{\"a}t im institutionellen Rahmen der Strafverfolgung abbildet. Im Zentrum steht die Frage, wie staatsanwaltschaftliche Ermittlungs- und Organisationsprozesse am Beispiel der Schwerpunktstaatsanwaltschaft Cottbus strukturell, epistemisch und operativ auf diese Herausforderungen reagieren k{\"o}nnen. Die Methodik kombiniert qualitative Interviews mit Vertreter:innen einer Strafverfolgungsbeh{\"o}rde sowie internationaler Organisationen mit einer strukturierten Dokumentenanalyse und einer Sekund{\"a}rdatenauswertung der Staatsanwaltschaftsstatistik des Landes Brandenburg. Daraus wurde das OET-Cybercrime-Modell entwickelt, das digitale Delikte entlang ontologischer, epistemologischer und institutioneller Dimensionen systematisiert. Die Analyse zeigt deutliche Spannungen zwischen normativer Anspruchslage und tats{\"a}chlicher Verfahrenspraxis. Fehlende Klassifizierungen digitaler Fallstrukturen, informelle Wissensspeicherung sowie nicht abgestimmte Ressourcenzuweisungen erschweren eine zielgerichtete und rechtsstaatlich belastbare Verfolgung hybrider Delikte. {\"U}bergabeverluste sowie unklare Zust{\"a}ndigkeiten gef{\"a}hrden die Beweissicherung und f{\"u}hren zu Effizienzverlusten im Ermittlungsprozess. Zur Behebung dieser Defizite schl{\"a}gt die Arbeit vier zentrale Maßnahmen vor: (1) ein gestuftes Hybridit{\"a}tsscreening zur ersten Fallbewertung, (2) ein KI-gest{\"u}tztes Feedbacksystem zur Qualit{\"a}tssicherung, (3) eine virtuelle Trainingsumgebung in Form eines digitalen Zwillings sowie (4) die Integration internationaler Fortbildungsformate, wie etwa des EEBC-Kurses unter Leitung von Interpol. Letzterer sollte in enger Kooperation mit der BTU in eine strukturierte Fortbildungsarchitektur eingebunden werden. Die Dissertation versteht Cybercrime nicht nur als technisches Deliktfeld, sondern als Ausdruck eines tiefergreifenden Wandels staatlicher Ordnung im Cyberraum. Sie entwickelt ein Modell institutionellen Lernens, das juristische, technische und organisatorische Perspektiven zu einer widerstandsf{\"a}higen Struktur digitaler Strafverfolgung verbindet.}, subject = {Cybercrime; Strafverfolgung; Spezialisierung; Prosecution; Specialization; Computerkriminalit{\"a}t; Strafverfolgung}, language = {de} } @techreport{WinklerHayatRuester2025, author = {Winkler, Herwig and Hayat, Mubashir and R{\"u}ster, Moritz}, title = {KI-basierte Instandhaltungsplanung und -steuerung im {\"o}ffentlichen Verkehr : Status quo und konzeptionelle {\"U}berlegungen}, organization = {BTU Cottbus - Senftenberg, Lehrstuhl f{\"u}r Produktionswirtschaft}, doi = {10.26127/BTUOpen-7161}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71612}, year = {2025}, abstract = {Durch eine sorgf{\"a}ltige Instandhaltung von Z{\"u}gen, Bussen und Flugzeugen l{\"a}sst sich die Verf{\"u}gbarkeit, Betriebssicherheit und Wirtschaftlichkeit dieser Verkehrsmittel maßgeblich sichern. Bislang wurden die daf{\"u}r relevanten planungsintensiven Prozesse in Zugwerkst{\"a}tten mit herk{\"o}mmlichen statischen Planungssystemen durchgef{\"u}hrt. Diese Systeme bilden zwar eine Grundlage f{\"u}r die Organisation der Instandhaltungsarbeiten, sind jedoch nicht in der Lage, optimierte Instandhaltungsprogramme zu erstellen. Infolgedessen treten w{\"a}hrend der tats{\"a}chlichen Durchf{\"u}hrung der Instandhaltungsmaßnahmen h{\"a}ufig ungeplante Zusatzaufgaben auf, die den Arbeitsablauf in den Instandhaltungswerkst{\"a}tten st{\"o}ren und sowohl die wirtschaftliche als auch die betriebliche Effizienz beeintr{\"a}chtigen. Es hat sich gezeigt, dass solche St{\"o}rungen h{\"a}ufig zu erh{\"o}hten Instandhaltungskosten, l{\"a}ngeren Durchlaufzeiten und einer verminderten Anlageneffizienz f{\"u}hren. Daher besteht ein wachsender Bedarf, bei der Instandhaltungsplanung und -steuerung im {\"o}ffentlichen Verkehrssektor von statischen zu dynamischeren, datengesteuerten Ans{\"a}tzen {\"u}berzugehen. K{\"u}nstliche Intelligenz (KI) bietet in dieser Hinsicht ein erhebliches Potenzial, da sie die Entwicklung von Vorhersagef{\"a}higkeiten, dynamischer Planung und intelligenter Ressourcenzuweisung erleichtert. Zu diesem Zweck werden in dieser Studie bestehende Forschungsarbeiten zu KI Ans{\"a}tzen f{\"u}r die Wartungsplanung und -steuerung in diesen Bereichen des {\"o}ffentlichen Verkehrs systematisch untersucht und bewertet. Anhand einer deskriptiven Analyse werden neue Forschungstrends vorgestellt, w{\"a}hrend eine detaillierte Inhaltsanalyse die Ergebnisse der relevantesten Artikel in diesem Bereich zusammenfasst. Die Analyseergebnisse zeigen, dass sich die meisten Forschungsarbeiten isoliert auf bestimmte Aspekte wie die Vorhersage der verbleibenden Nutzungsdauer und die Fehlerdiagnose konzentrieren. In der Praxis umfasst die Wartungsplanung und -steuerung jedoch eine komplexe Koordination vieler Aktivit{\"a}ten (z B Inspektion, Ressourcenzuweisung und Personal und Aufgabenplanung usw.). Daher sind die Autoren der Ansicht, dass noch holistischere L{\"o}sungen erforderlich sind, die Instandhaltungsaktivit{\"a}ten und Werkstattbeschr{\"a}nkungen integrieren und {\"u}ber Einzelkomponentenvorhersagen hinaus zu einer Optimierung der Instandhaltung auf Systemebene f{\"u}hren, die in realen Instandhaltungsbetrieben validiert werden kann. Dar{\"u}ber hinaus wird in diesem Studienbericht ein konzeptioneller Rahmen vorgestellt der die Planung und Steuerung von Instandhaltungsauftr{\"a}gen in Instandhaltungswerkst{\"a}tten des {\"o}ffentlichen Nahverkehrs verbessern soll. Der vorgeschlagene Rahmen dient als Grundmodell f{\"u}r den Einsatz von KI Technologien zur Reduzierung von Ineffizienzen, zur Verbesserung der Terminplanung und letztlich zur Unterst{\"u}tzung einer zeitnahen und kosteneffizienten Instandhaltungsplanung und -steuerung f{\"u}r Z{\"u}ge.}, subject = {Instandhaltungsplanung; KI; Instandhaltungssteuerung; Maintenance planning; AI; Maintenance control; Public transportation; {\"O}ffentliche Verkehrsmittel; {\"O}ffentlicher Verkehr; Instandhaltungsplanung; K{\"u}nstliche Intelligenz}, language = {de} } @book{OPUS4-6815, title = {Scents of Place : the significance of odours in the experience of heritage}, editor = {Skedzuhn-Safir, Alexandra}, isbn = {978-3-940471-79-6}, doi = {10.26127/BTUOpen-6815}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-68154}, publisher = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Odours play an essential role in our everyday lives. The sense of smell is vital for self-preservation, particularly in detecting potential threats. In the discourse of cultural heritage, the significance of odours is a research topic that is increasingly coming into focus. Odours determine the character of people, spaces, and places, but due to their ephemeral nature, they are more elusive and transitory than any cues or information resulting from vision or touch. Therefore, particular assessment methods, such as so-called smellscapes, will be required to analyse and assess them. Even if the cultural significance of odours is subjective and culturally determined and cannot be inherently charged with significance, their meaning is connected to individual or collective memory and identity. The meaning of odours is explored in places that vary in scale, from private homes to schools, subway stations, and urban quarters, and that can be found in different cities in and outside of Europe.}, subject = {Cultural heritage; Smellscape; Odours; Identity; Cultural significance; Kulturelles Erbe; Geruchslandschaft; Ger{\"u}che; Identit{\"a}t; Kulturelle Bedeutung; Kulturerbe; Bedeutung; Geruchswahrnehmung; Bewertungssystem; Identit{\"a}t; Erleben}, language = {en} } @phdthesis{Dieterle2025, author = {Dieterle, Ann-Kathrin}, title = {The role of inter-organizational cooperation for resilience : an analysis of organizational processes, strategies, practices, and sources}, doi = {10.26127/BTUOpen-7157}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71571}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {This dissertation examines the influences of inter-organizational cooperation on resilience and its implementation. Recent events like the COVID-19 pandemic and the Russia-Ukraine war have underscored the importance of organizational resilience. Yet there is still a need in organizational resilience research for multifaceted and empirical studies on the relationships between the resilience process, resilience capabilities and resources, other related sources of resilience, and the various resilience outcomes. In particular, research on the proactive phase of the resilience process - also known as strategic resilience - is still in its early stages. Inter-organizational cooperation, which spans multiple levels of analysis, offers a promising approach to filling these gaps, even though its role for resilience remains underexplored. Furthermore, from a practical perspective, it is known that firms form alliances in times of crisis as well as innovation-related partnerships during renewal processes. To address these issues and to provide a holistic and interdisciplinary approach for explaining the building and implementation of resilience, this thesis employed both theoretical and practical methods within its research design. It begins with a narrative literature review that conceptualizes inter-organizational resilience as outlined in the first publication, drawing on interdisciplinary scientific scholars. This is followed by a desk research method in the second publication, to deepen the understanding and practical relevance of aforementioned conceptualizations. Furthermore, this thesis examined the subject through case studies, including 22 in-depth narrative interviews and various secondary data sources, with two different foci in the third and fourth publications. The findings contribute to resilience research by developing a conceptual multi-level resilience framework that illustrates the dynamics of inter-organizational cooperation across the phases of anticipation, coping, and adaptation, highlighting the importance of capabilities and resources as key resilience sources. Second, it identifies interorganizational cooperation as a crucial strategy during crises, highlighting specific outcome trajectories. Third, it links proactive resilience to a holistic innovation strategy mix, showing how inter-organizational diversity, intra-organizational participation, and integrative learning processes contribute to building proactive resilience resources and capabilities. Fourth, the thesis demonstrates how cooperation projects between established firms and start-ups are implemented as practical measures to enhance proactive resilience, emphasizing the critical role of relationship quality. Collectively, these contributions provided insights into how inter-organizational cooperation strengthens resilience processes, capabilities, and resources, offering strategies and practices for achieving resilience outcomes.}, subject = {Organizational resilience; Inter-organizational cooperation; Resilience capabilities; Innovation strategy; Organisationale Resilienz; Organisations{\"u}bergreifende Zusammenarbeit; Resilienzf{\"a}higkeiten; Innovationsstrategie; Organisationsentwicklung; Resilienz; Kooperation; Innovation}, language = {en} } @misc{OPUS4-7091, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2025,32 (01.10.2025)}, doi = {10.26127/BTUOpen-7091}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70914}, year = {2025}, abstract = {Neufassung der fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Pflegewissenschaft (B.Sc.) vom 01. Oktober 2025}, language = {de} } @phdthesis{Manhique2025, author = {Manhique, Henrique Andr{\´e}}, title = {Economic analysis of multifunctional fruit production landscapes to promote biodiversity conservation and ecosystem services}, doi = {10.26127/BTUOpen-7166}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-71664}, school = {BTU Cottbus - Senftenberg}, year = {2025}, abstract = {Anthropogenic activities, such as economic development and population growth, drive the conversion of natural habitats into agricultural land and intensify existing fields, causing biodiversity loss and degradation of ecosystem services (ES) vital to agriculture and society. Integrating natural and semi-natural habitats (landscape features) within agricultural landscapes can mitigate these impacts by promoting biodiversity and enhancing ES like pest control and pollination, which reduce pesticide use and bee-hive rental costs, benefiting both farmers and the environment. Despite strong ecological evidence, economic studies on landscape features are scarce but vital for assessing their costs and benefits to farmers and society, thus informing governance and public support for funding implementations. This thesis addresses this gap by economically evaluating specific landscape features and governance structures for biodiversity conservation and ES provision in orchards in a developing country (South Africa) and a developed country (Germany). The first case study uses a discrete choice experiment (DCE) survey to elicit preferences for biodiversity and ES enhancement measures and fund management organisations in South Africa's Cape Floristic Region. The second case study employs a DCE to explore preferences for ES measures and governance enforcement in German apple orchards. The third case study analyses costs and benefits of landscape features under conventional and organic management in German commercial apple orchards. Findings indicate support for biodiversity and ES promotion in both contexts. South African respondents prefer landscape features conserving endangered species over ES provision, while German respondents favour features delivering cultural alongside provisioning and regulating ES. Governance preferences reveal support for private institutions managing biodiversity funds in South Africa, and for multi-actor governance enforcing compliance in Germany. Cost-benefit analysis shows a wide gap between private and social net benefits, with significant societal gains but limited or negative private returns depending on management, highlighting the need for incentives like agri-environment schemes. Policy recommendations focus on designing such incentives, emphasising governance and targeted biodiversity and ES measures to bridge private-social interests and support landscape feature adoption.}, subject = {Flower strips; Hedgerows; Institutional distrust; Net present value; Political orientation; Bl{\"u}hstreifen; Hecken; Institutionelles Missvertrauen; Kapitalwert; Politische Orientierung; Deutschland; S{\"u}dafrika; Biodiversit{\"a}t; {\"O}kosystemdienstleistung; Obstanlage; Organisationsmodell; Anreizsystem}, language = {en} }