TY - JOUR A1 - Vollmer, Michael T1 - How many stars appear colored to the naked eye? JF - Applied Optics N2 - Naked eye studies of the clear night sky reveal that a certain percentage of all observable stars can be perceived as having color. Subjective estimates differ widely, ranging from just a few to a maximum of above two hundred. Explanations are based on the emission spectra of the stars, which are modified by interstellar dust clouds, the Earth atmosphere, and mostly the inverse square law. Color changes occur not only for variation of the star’s angular elevation above the horizon, but as well for decreasing nighttime sky brightness due to the transition from photopic via mesopic to scotopic vision. The maximum number of stars showing color to the naked eye depends on star illuminances on Earth and the background sky luminance. The limit of observing color is found to correspond to apparent visual magnitudes around , defining the number of colored stars. This also means that naked eye perception of stars with color is only possible for a certain star distance range, which is well below the maximum naked eye visual range of stars. Y1 - 2026 U6 - https://doi.org/10.1364/AO.580635 VL - 65 IS - 9 SP - C27 EP - C37 PB - Optica Publishing Group ER - TY - JOUR A1 - Dickerson, Ashton L. A1 - Andreas, Jechow A1 - Nößler, Michelle A1 - Walles, Tim J. A1 - Berger, Stella A. A1 - Hölker, Franz A1 - Nejstgaard, Jens C. T1 - High-resolution in situ imaging reveals size-specific moonlight responses in zooplankton diel vertical migration JF - Scientific Reports N2 - Light is the primary cue driving zooplankton diel vertical migration (DVM), a strategy that balances predation risk with resource access. However, DVM is often oversimplified, with limited consideration of how light-driven risks and resource needs vary across taxa and life stages. This simplification is partly due to constraints on collecting high-resolution, size-resolved data —especially at night, when subtle shifts in illumination reshape nocturnal risk landscapes. To overcome these limitations, we deployed a high-resolution in situ modular Deep-focus Plankton Imager and an image-recognition approach to quantify fine scale DVM and body sizes of Cladocerans and Copepods in Lake Stechlin, Germany. Data was collected from day into night and across moonrise and was compared with environmental data from vertical profiling sondes. Typical DVM patterns emerged, with deeper daytime distributions, however, moonlight introduced additional behavioural complexity: larger individuals avoided illuminated layers, likely managing predation risk, while smaller individuals moved into these layers, possibly exploiting foraging opportunities and reduced risk. These light-mediated shifts were further shaped by ecological conditions; copepods tracked food-rich layers regardless of light levels at night, while cladocerans showed light-dependent responses to both temperature and food, such that light caused them to avoid otherwise favourable (warm, food-rich) layers. Our approach provides new insight into how zooplankton navigate nocturnal lightscapes, revealing size- and taxon-specific strategies. By establishing size-dependent responses to natural moonlight, this work provides a crucial baseline for predicting how artificial light at night may restructure zooplankton communities and destabilize freshwater food webs. Y1 - 2026 U6 - https://doi.org/10.1038/s41598-026-36105-0 VL - 16 IS - 1 SP - 1 EP - 14 PB - Nature ER - TY - INPR A1 - Markgraf, Klaus A1 - Müller, Katja A1 - Henkel, Clara A1 - Flassig, Robert A1 - Janke, Christian A1 - Flassig, Peter T1 - Application of Explainable Artificial Intelligence (XAI) in Combination with Bootstrap to Improve Processes in Model-Based Aero-Engine Development N2 - In aerospace engineering, data-driven surrogate models are increasingly employed to mitigate the computational and temporal costs of simulations, numerical analyses, and experiments. Two major challenges accompany this trend. First, the training of surrogate models often requires a sufficient amount of data, the determination of which is inherently difficult. Second, these models often exhibit high complexity, limiting both the traceability of their outputs and the extraction of useful insights. Explainable Artificial Intelligence (XAI) methods have therefore emerged as promising tools to enhance the interpretability, explainability, and transparency of such models. In this work, a combination of the established Shapley Additive Explanations (SHAP) approach with a bootstrap-based method is investigated. The proposed framework provides insights into the contribution of individual features and enables an assessment of data sufficiency with respect to surrogate model performance. Building upon these findings, the Bootstrap-Informed Feature Importance (BIFI) method is proposed. BIFI offers a model-agnostic, robust identification of relevant features.The method is analyzed in the context of Design of Experiments (DOE) processes used for surrogate model construction. Evaluation on four synthetic datasets of increasing complexity, as well as a dataset from aero-engine development, demonstrates that BIFI-based DOEs can improve surrogate model quality measured in terms of R and MSE by up to 90%. Consequently, the proposed method enables more efficient utilization of simulations, computations, and experiments while reducing the required number of samples. Y1 - 2026 U6 - https://doi.org/10.21203/rs.3.rs-8590595/v1 SP - 1 EP - 23 ER - TY - RPRT A1 - Brucker, Amelie T1 - Analyse von Cyber Threat Intelligence Quellen aus dem Projekt SzA4Hosp N2 - Im Rahmen des Projekts "SzA4Hosp - Systeme zur Angriffserkennung in der Medizinischen Versorgung" wurde eine Erhebung für deutsche Krankenhäuser durchgeführt, bei der genutzte Quellen für Cyber Threat Intelligence identifiziert wurden. Diese Arbeit stellt die 41 dabei erfassten Quellen hinsichtlich verschiedener Attribute wie Format, Inhalt und Bereitstellungsmodell vor. Abschließend erfolgt eine übergreifende Auswertung der Quellen in Bezug auf die Formate, in denen sie Informationen bereitstellen. Es wird gezeigt, dass die Verwendung von natürlicher Sprache in den untersuchten Quellen deutlich verbreiteter ist, als der Einsatz strukturierter Formate. KW - Computersicherheit KW - Medizinische Einrichtung KW - Cyberattacke Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-32741 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - THES A1 - Steffen, Christopher T1 - Analyse des Entwicklungsstandes bei Zero Trust-Umgebungen sowie Konzeption und Pilotierung eines Demonstrators basierend auf Open Source Komponenten N2 - Da sich Cyberbedrohungen stetig weiterentwickeln, müssen auch die defensiven Maßnahmen erweitert werden. Ein Konzept, welches sich mit derartigen Maßnahmen beschäftigt wird als Zero Trust bezeichnet. Diese Arbeit befasst, sich mit der Analyse des Konzepts Zero Trust sowie dessen praktischer Umsetzung. Ziel ist es, den aktuellen Entwicklungsstand von Zero Trust-Umgebungen zusammenzufassen und anschließend aus den gewonnenen Erkenntnissen einen Demonstrator zu konzipieren und letztendlich umzusetzen. Dazu sollen ausschließlich Open Source Komponenten verwendet werden. Zu diesem Zweck wurden aktuelle Quellen zu Zero Trust wie NIST, CISA, BSI und wis senschaftlichen Arbeiten analysiert und deren Inhalte zusammengefasst. Aus den Inhalten wurde anschließend ein Konzept für die Erstellung eines Zero Trust Demonstrators erarbei tet. Die praktische Umsetzung des Demonstrators wird anschließend beschrieben sowie auf Problematiken bei der Implementierung eingegangen. Der Demonstrator konnte nicht- wie ursprünglich konzipiert- umgesetzt werden, jedoch wurde exemplarisch dargestellt, wie die komplette Implementation ausgesehen hätte. KW - Computersicherheit KW - Informationssicherheit KW - Sicherheitsplanung Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-33012 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - CHAP A1 - Orlowski, Maximilian A1 - Knauff, Emilia A1 - Marquardt, Florian T1 - Towards Personal Assistants for Energy Processes Based on Locally Deployed LLMs T2 - Proceedings of the 17th International Conference on Agents and Artificial Intelligence (ICAART 2025) , 2025, Porto, Portugal N2 - This paper presents a coaching assistant for network operator processes based on a Retrieval-Augmented Gen- eration (RAG) system leveraging open-source Large Language Models (LLMs) as well as Embedding Models. The system addresses challenges in employee onboarding and training, particularly in the context of increased customer contact due to more complex and extensive processes. Our approach incorporates domain-specific knowledge bases to generate precise, context-aware recommendations while mitigating LLM hallucination. We introduce our systems architecture to run all components on-premise in an our own datacenter, ensuring data security and process knowledge control. We also describe requirements for underlying knowledge doc- uments and their impact on assistant answer quality. Our system aims to improve onboarding accuracy and speed while reducing senior employee workload. The results of our study show that realizing a coaching assistant for German network operators is reasonable, when addressing performance, correctness, integration and locality. However current results regarding accu- racy do not yet meet the requirements for productive use. Y1 - 2025 U6 - https://doi.org/10.5220/0013175600003890 SP - 695 EP - 706 PB - SCITEPRESS ER - TY - RPRT A1 - Frosch, Katharina A1 - Damus, Martha A1 - Haberland, Steffi A1 - Hädicke, Svenja A1 - Lindauer, Friederike A1 - Winkel, Carmen T1 - Lehren mit KI: Talk2Transform (T2T) T2 - Wie KI Studium und Lehre verändert Anwendungsfelder, Use-Cases und Gelingensbedingungen Y1 - 2025 UR - https://hochschulforumdigitalisierung.de/wp-content/uploads/2025/04/HFD_AP_87_Wie_KI_Studium_und_Lehre_veraendert_final.pdf SP - 23 EP - 25 PB - Hochschulforum Digitalisierung ER - TY - THES A1 - Radke, Niclas T1 - Entwicklung einer mobilen Incident-Response-Netzwerksensorik zur Analyse von Datenverkehr in kompromittierten Netzwerken N2 - Das Ziel der vorliegenden Arbeit ist es, die These zu bestätigen, dass sich eine mobile Incident-Response-Netzwerksensorik in einer zuvor unbekannten Netzwerkumgebung innerhalb eines festgelegten Zeitraums installieren lässt und die forensische Analyse entscheidend unterstützen kann. Dazu wurden Anforderungen an die mobile Netzwerksensorik mithilfe von zwei Experteninterviews erhoben, deren Erfüllung an die Bestätigung der These gekoppelt ist. Zur Umsetzung der Anforderungen wurden Soft- und Hardwarekomponenten ausgewählt, die in Kombination die Netzwerksensorik bilden. Bei der Softwareauswahl zeigte sich, dass die Plattformlösung Security Onion aufgrund der Vielzahl implementierter Softwarekomponenten, der umfangreichen Dokumentation und der Architektur besser geeignet ist, die Projektanforderungen zu erfüllen und damit die These zu bestätigen, als Clear NDR. Durch drei Versuche konnte die These erfolgreich bestätigt werden. Damit liefert die Arbeit wichtige Grundlagen für die Implementierung einer mobilen Netzwerksensorik. Durch weitere Versuche und die in dieser Arbeit vorgestellten Hardwareempfehlungen kann in Zukunft eine praxistaugliche mobile Netzwerksensorik in Betrieb genommen werden. KW - Netzwerksicherheit KW - Incident-Response KW - IDS KW - Security Onion KW - Clear NDR Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-33608 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - THES A1 - Schumacher, Jan Gregor T1 - Untersuchung von Response-Optionen der Wazuh Endpoint-Detection zur Isolierung verdächtiger Endgeräte N2 - Diese Arbeit entwickelt und realisiert automatisierte Reaktionsme-chanismen zur Netzwerkisolierung kompromittierter Endgeräte mit-tels der Open-Source-Plattform Wazuh. Es werden zwei Ansätze als Proof of Concept implementiert und verglichen: eine host-basierte Isolierung durch Deaktivierung der lokalen Netzwerk-schnittstelle (Windows/Linux) und eine netzwerk-basierte Methode, die den Switch-Port des Geräts zentral abschaltet. Die Validierung in einer Testumgebung zeigt, dass die host-basierte Methode eine schnelle Reaktion ermöglicht, während der netzwerk-basierte An-satz unempfindlicher gegenüber Manipulationen auf dem Host ist. Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-33624 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - CHAP A1 - Wagner, Robin A1 - Kitzelmann, Emanuel A1 - Boersch, Ingo T1 - Mitigating Hallucination by Integrating Knowledge Graphs into LLM Inference – a Systematic Literature Review T2 - Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 4: Student Research Workshop) N2 - Large Language Models (LLMs) demonstrate strong performance on different language tasks, but tend to hallucinate – generate plausible but factually incorrect outputs. Recently, several approaches to integrate Knowledge Graphs (KGs) into LLM inference were published to reduce hallucinations. This paper presents a systematic literature review (SLR) of such approaches. Following established SLR methodology, we identified relevant work by systematically search in different academic online libraries and applying a selection process. Nine publications were chosen for indepth analysis. Our synthesis reveals differences and similarities of how the KG is accessed, traversed, and how the context is finally assembled. KG integration can significantly improve LLM performance on benchmark datasets and additionally to mitigate hallucination enhance reasoning capabilities, explainability, and access to domain-specific knowledge. We also point out current limitations and outline directions for future work. KW - LLMs KW - hallucination KW - knowledge graphs KW - inference KW - literature review Y1 - 2025 UR - https://aclanthology.org/2025.acl-srw.53.pdf U6 - https://doi.org/10.18653/v1/2025.acl-srw.53 SP - 795 EP - 805 PB - Association for Computational Linguistics CY - Vienna ER - TY - INPR A1 - Tuset-Peiro, Pere A1 - Pilgermann, Michael A1 - Pegueroles, Josep A1 - Vilajosana, Xavier T1 - Assessing Cybersecurity of Internet-Facing Medical IT Systems in Germany & Spain Using OSINT Tools N2 - This paper investigates cybersecurity threats in medical IT (Information Technology) systems exposed to the Internet. To that end, we develop a methodology and build a data processing pipeline that allows to gather data from different OSINT (Open Source Intelligence) sources, and processes it to obtain relevant cybersecurity metrics. To validate its operation and usefulness, we apply it to two countries, Germany and Spain, allowing to study the main threats that affect medical IT systems in these countries. Our initial findings reveal that 20% of German hosts and 15% of Spanish hosts tagged as medical devices have at least one CVE (Common Vulnerabilities and Exposures) with a CVSS (Common Vulnerability Scoring System) graded as critical (i.e., value 8 or greater). Moreover, we found that 74% of CVEs found in German hosts are dated from earlier than 2020, whereas for Spanish hosts the percentage is 60%. This indicates that medical IT systems exposed to the Internet are seldom updated, which further increases their exposure to cyberthreats. Based on these initial findings, we finish the paper providing some insights on how to improve cybersecurity of these systems. Y1 - 2025 U6 - https://doi.org/10.20944/preprints202503.1340.v1 SP - 190 EP - 197 ER - TY - BOOK A1 - Kraska, Martin T1 - Engineering Calculations with SMath BT - First Steps N2 - Introduction to SMath Studio covering the topics installation, configuration, creating text and formulas, scientific units, graphics, embedded images. The tutorial takes approximately 2 hours to complete. KW - SMath KW - Software Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-33709 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - CHAP A1 - Craig, Kevin A1 - Fitz, Lukas R. G. A1 - Miller, Kasey T1 - IT Identity fostering User Innovation on Digital Platforms: The Role of Self-Esteem T2 - AMCIS 2025, 31st Americas Conference on Information Systems, Montréal, Canada, 2025 N2 - Digital platforms can grow by motivating users to explore new ways to use a wider range of affiliated products and services. This work explores the power of IT Identity to motivate such innovative use, through identity's ability to intrinsically motivate behavior. Data from 209 Amazon.com users indicates that IT Identity may cause Trying to Innovate with an IT, mediated by Self-Esteem. Y1 - 2025 UR - https://aisel.aisnet.org/cgi/viewcontent.cgi?article=1114&context=amcis2025 SP - 1 EP - 9 PB - Association for Information Systems ER - TY - JOUR A1 - Kolláth, Zoltán A1 - Hajdu, Tamás A1 - Degen, Tobias A1 - Jechow, Andreas A1 - Sztakovics, János T1 - Conversion between measurement units used for night sky quality assessment with multispectral (RGB) cameras JF - Journal of Quantitative Spectroscopy and Radiative Transfer N2 - In recent years, many studies have shown that light pollution adversely affects wildlife, ecosystems, and human well-being. To assess and mitigate these impacts, it is crucial that measurements of night sky quality are reliable and comparable across sites and instruments. However, the lack of standardised night sky brightness metrology and the use of a wide variety of measurement instruments with varying spectral responsivity and field-specific measurement units hinder meaningful comparison. We collected night sky spectra from 44 nights at dark locations (existing and proposed dark sky parks). Based on this observational dataset, we created a larger random set of spectra. These data served to fit conversion parameters for a wide variety of units. We demonstrate that RGB cameras, when used as multichannel measuring devices, enable the retrieval of measurements that facilitate conversions between different units. Furthermore, even airglow can be quantified from a given measurement, enabling the determination of oxygen and sodium emission line contributions. Since this contribution is not negligible, quantitative measurements of its magnitude are crucial for accurately assessing light pollution at dark-sky sites. Using our spectral measurement database, we constructed the most probable transformation from the cameras’ R, G, and B channel 𝑑𝑠𝑢 values to other units, such as the astronomical Bessel V band magnitudes. The unit conversion formulas provided in this paper are valid for mildly polluted sites (existing and proposed dark sky places), in the 21-22 magV∕arcsec2 range. Y1 - 2025 U6 - https://doi.org/10.1016/j.jqsrt.2025.109636 VL - 347 SP - 1 EP - 10 PB - Elsevier ER - TY - CHAP A1 - Vielhauer, Claus A1 - Loewe, Fabian A1 - Pilgermann, Michael T1 - Towards Modeling Hidden & Steganographic Malware Communication based on Images T2 - IH&MMSEC '25: ACM Workshop on Information Hiding and Multimedia Security, San Jose, CA, USA, 2025 N2 - Recently, an increasing number of IT security incidents involving malware, which makes use of hidden and steganographic channels for malicious communication (a.k.a. as "stegomalware"), can be observed in the wild. Especially the use of images to hide malicious code is rising. In consideration of this shift, a new model is proposed in this paper, which aims to help security professionals to identify and analyze incidents revolving around steganographic malware in the future. The model focuses on practical aspects of steganalysis of communication data to elaborate linking properties to previous code analysis knowledge. The model features two distinct roles that interact with a knowledge base which stores malware features and helps building a context for the incident. For evaluation, two image steganography malware types are chosen from popular databases (malpedia and MITRE ATT&CK®), which are analyzed in multiple steps including steganalysis and code analysis. It is conceptually shown, how the extracted features can be stored in a knowledge base for later use to identify stegomalware from communication data without the need of a thorough code analysis. This allows to uncover previously hidden meta-information about the examined malicious programs, enrich the incident’s forensic context traces and thus allows for thorough forensic insights, including attribution and improved preventive security measures in the future. Y1 - 2025 UR - https://dl.acm.org/doi/pdf/10.1145/3733102.3733152 U6 - https://doi.org/10.1145/3733102.3733152 SP - 52 EP - 63 ER - TY - JOUR A1 - Schumann, Sophia A1 - Stoilova, Velizara A1 - Bortoletto, Enrico A1 - Piva, Elisabetta A1 - Pacchini, Sara A1 - Mozzi, Gloria A1 - Jechow, Andreas A1 - Marion, Andrea A1 - Bertotto, Daniela A1 - Erlandson, Ann A1 - Hölker, Franz A1 - Greenberg, Larry A1 - Santovito, Gianfranco T1 - Impact of artificial light at night (ALAN) on cardiac function and acute oxidative stress physiology in migratory brown trout smolts JF - Environmental Pollution N2 - Light pollution poses significant ecological challenges for nocturnal animals reliant on natural light for migration, orientation, and circadian rhythms. The physiological effects of abrupt exposure to artificial light at night (ALAN) on migratory fish, such as the light experienced passing near illuminated infrastructures, remain poorly understood. This study investigates the physiological responses of brown trout (Salmo trutta) smolts to low-intensity (0.02 lx) and short-term (30 s) ALAN, simulating nocturnal migration light conditions near illuminated bridges. To evaluate the influence of social dynamics, trout were tested individually (solitary) or in groups of six. Using continuous cardiac monitoring with data storage tags, alongside analyses of oxidative stress markers and adenylate kinase (AK) activity in the heart, we identified distinct patterns of physiological responses. Solitary fish exhibited significant heart rate variability (HRV) increases following repeated ALAN exposure, suggesting impaired physiological regulation under repeated ALAN exposure. In contrast, trout in groups displayed consistently lower HRV over the entire 90-min experiment, implying that social dynamics likely influenced a sustained oxidative stress response, corroborated by increased AK activity. Oxidative stress markers further reflected social effects, with significant upregulation of key antioxidant enzymes (sod1, sod2, gpx1, gpx4) and elevated lipid peroxidation, identifying lipids as primary oxidative targets. The observed divergence between superoxide dismutase (SOD) activity and sod gene expression suggests adaptive post-transcriptional regulation to maintain redox balance under combined environmental and social stress. These findings reveal that social dynamics under ALAN can amplify physiological stress, potentially affecting migratory outcomes. Y1 - 2025 U6 - https://doi.org/10.1016/j.envpol.2025.126593 IS - 381 SP - 1 EP - 9 PB - Elsevier ER - TY - JOUR A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - Alternative digital platforms: comparative analysis through the lens of Corporate Aikido JF - Information Systems and e-Business Management N2 - Competing with dominant players in the digital platform (DP) economy is an increasingly complex and expensive endeavor for alternative digital platform (ADP) providers trying to disrupt established platform ecosystems. Nevertheless, ADPs position themselves deliberately in the competitive space of large competitors, targeting customer groups whose values and mindsets differ from mainstream DPs. Although there are many examples to find in practice, the variety of ADPs across different DP ecosystems and industries, especially in regards of strategic objectives, directions and characteristics, has not been researched in-depth yet. Based on a systematic, practice-based artifact review, this paper analyses and compares 105 ADPs in the competitive space of dominant DP ecosystem players. The study utilizes the theory of Corporate Aikido as an analytical framework, mapping the strategic elements of overthrowing established value propositions and turning a competitors’ strengths into weaknesses. Our findings indicate that privacy- and security-awareness, empowerment and inclusivity, premium quality and curation, open source and free access, uncensored, transparent and decentralized platforms as well as ecological and climate-friendly offers shape the landscape of alternative approaches in today’s DP economy. The results are subsequently discussed, yielding managerial implications and future opportunities for DP research. Y1 - 2025 U6 - https://doi.org/10.1007/s10257-025-00703-8 SP - 1 EP - 22 PB - Springer ER - TY - JOUR A1 - Frosch, Katharina A1 - Lindauer, Friederike T1 - Learning With Short Bursts: How Effectively Can We Build Competencies in Climate Change-Related Areas Based on Microlearning? JF - European Journal of Education N2 - The study examines the effectiveness of microlearning in developing the capacity to address climate change and adapt to environmental challenges. Conducted as an online field experiment with 140 participants, the study focused on the impacts of smartphone use as an illustrative learning domain for education in climate change-related areas. Using a pre–post research design and simultaneous equation models, the study found improvements in knowledge retention, with a median increase of 38%. The results indicated that the brief microlearning units also promoted sustainability action competencies, such as confidence in one's influence and willingness to act sustainably. This suggests that higher-order learning processes were also triggered, although to a much lesser extent. Furthermore, learner satisfaction was identified as a mediating variable for these positive outcomes. The study concludes that short bursts of knowledge delivered through microlearning activities can be used alongside traditional training methods to build the critical skills needed for initiatives such as the EU Green Deal. Y1 - 2025 U6 - https://doi.org/10.1111/ejed.70088 VL - 60 IS - 2 SP - 1 EP - 17 PB - Wiley ER - TY - JOUR A1 - Kalinkat, Gregor A1 - Jechow, Andreas A1 - Schroer, Sibylle A1 - Hölker, Franz T1 - Nocturnal pandas: conservation umbrellas protecting nocturnal biodiversity JF - Trends in Ecology & Evolution N2 - Light pollution is an emerging ecological threat. To mitigate its negative consequences, creative inter- and transdisciplinary solutions and societal interactions are needed. To this end, we introduce nocturnal umbrella species representative of light-sensitive biodiversity whose protection will safeguard vital ecosystem services and a wide range of co-occurring species. Y1 - 2025 U6 - https://doi.org/10.1016/j.tree.2025.05.006 VL - 40 IS - 8 SP - 736 EP - 739 PB - Elsevier ER - TY - JOUR A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - Coping Practices of Small- and Medium-Sized Enterprises Facing Power Asymmetry in Digital Platform Business JF - Strategic Change N2 - Digital platform (DP) enterprises have risen to the top of the global economy by inverting traditional business models. They earn money through matchmaking, transaction facilitation, and efficient orchestration of other stakeholders' resources. Small- and medium-sized enterprises (SMEs) play a decisive role in this success story: they offer products and services on many leading DPs and thereby feed platform networks as sellers and suppliers. On the other hand, while DPs enable SMEs to reach new customers and outsource costly managerial tasks, many SMEs struggle with the negative consequences of asymmetric power dynamics and dependency risks in platform business. This paper analyzes 14 cases of SMEs that face power asymmetry as DP value providers, unraveling challenges encountered and coping practices employed in this situation. The findings reveal that power asymmetry between dominant DPs and SMEs creates significant challenges, including exploitative relationships, loss of autonomy, surveillance pressures, and devaluation of SME contributions, while SMEs cope through disintermediation, multi-homing, individual resistance tactics, and striving for more equitable DP models. Moreover, three relationality types are identified: DPs being SMEs' “partners,” “tools,” and “necessary evil.” This article offers a new perspective on boundaries of SME strategies in the DP economy and contributes with empirical insights to the advancing field of entrepreneurial platform research. Y1 - 2025 U6 - https://doi.org/10.1002/jsc.2657 SP - 1 EP - 21 PB - Wiley ER -