@article{KernHessKriegletal.1998, author = {Kern, Thomas and Heß, J. and Kriegl, W. and Schweizer, A.}, title = {Visualization of the Resistance Spot Welding Process in the Production Line}, series = {Welding Research Supplement}, volume = {77}, journal = {Welding Research Supplement}, number = {12}, pages = {495 -- 502}, year = {1998}, language = {en} } @article{KernKoszielska2011, author = {Kern, Thomas and Koszielska, Maria}, title = {Application of Information Technology by Students of Technical Sciences in the Context of Their Studying Styles}, series = {The New Educational Review}, volume = {25}, journal = {The New Educational Review}, number = {3}, issn = {1732-6729}, pages = {151 -- 159}, year = {2011}, language = {de} } @unpublished{FlassigVogelWoelferetal.2018, author = {Flassig, Robert J. and Vogel, Sven K. and W{\"o}lfer, Christian and Ramirez, Diego A. and Sundmacher, Kai and Schwille, Petra}, title = {Cortical Actomyosin Flows are Generated by Actomyosin Cluster Vibrationsin Vitro}, publisher = {bioRxiv / Cold Spring Harbor Laboratory}, doi = {10.1101/394700}, year = {2018}, language = {en} } @article{GoeckeKueglerMoelleretal.2016, author = {Goecke, Sven-Frithjof and K{\"u}gler, Helga and M{\"o}ller, Felix and Vollertsen, Frank}, title = {Dauerfestigkeit hybridgeschweißter {\"U}berlappn{\"a}hte des Stahls 22MnB5}, series = {Materials Testing}, volume = {58}, journal = {Materials Testing}, number = {6}, doi = {10.3139/120.110880}, pages = {569 -- 574}, year = {2016}, language = {de} } @article{GoeckeShomeDasetal.2016, author = {Goecke, Sven-Frithjof and Shome, M. and Das, A. and De, A.}, title = {Numerical modelling of gas metal arc joining of aluminium alloy and galvanised steels in lap joint configuration}, series = {Science and Technology of Welding \& Joining}, volume = {21}, journal = {Science and Technology of Welding \& Joining}, number = {4}, doi = {10.1080/13621718.2015.1104206}, pages = {303 -- 309}, year = {2016}, language = {en} } @article{GoeckeMuellerSievietal.2014, author = {Goecke, Sven-Frithjof and M{\"u}ller, Alexander and Sievi, Pravin and Albert, Florian and Rethmeier, Michael}, title = {Laser Beam Oscillation Strategies for Fillet Welds in Lap Joints}, series = {Physics Procedia}, volume = {56}, journal = {Physics Procedia}, doi = {10.1016/j.phpro.2014.08.149}, pages = {458 -- 466}, year = {2014}, language = {en} } @article{HirschMajcherekAmanetal.2015, author = {Hirsch, S{\"o}ren and Majcherek, S. and Aman, A. and Schmidt, B.}, title = {Microwave emission from lead zirconate titanate induced by impulsive mechanical load}, series = {Journal of Applied Physics}, volume = {118}, journal = {Journal of Applied Physics}, number = {16}, doi = {10.1063/1.4934735}, pages = {164105-1 -- 164105-7}, year = {2015}, language = {en} } @article{HirschPisarevskiyTatmyshevskiyetal.2015, author = {Hirsch, S{\"o}ren and Pisarevskiy, A. and Tatmyshevskiy, K. and Tomas, J. and Aman, S.}, title = {Light emission during impact stressing of a particle layer}, series = {Measurement Science and Technology}, volume = {26}, journal = {Measurement Science and Technology}, number = {4}, doi = {10.1088/0957-0233/26/4/045103}, year = {2015}, language = {en} } @inproceedings{Kramann2013, author = {Kramann, Guido}, title = {Darwinian Pianos: Realtime Composition Based on Competitive Evolutionary Process}, series = {Evolutionary and Biologically Inspired Music, Sound, Art and Design, Second International Conference, EvoMUSART 2013, 3. bis 5. April, Wien}, volume = {7834}, booktitle = {Evolutionary and Biologically Inspired Music, Sound, Art and Design, Second International Conference, EvoMUSART 2013, 3. bis 5. April, Wien}, publisher = {Springer}, address = {Berlin / Heidelberg}, isbn = {978-3-642-36954-4}, doi = {10.1007/978-3-642-36955-1_4}, pages = {37 -- 46}, year = {2013}, language = {en} } @article{KnoblochBraunschweig2017, author = {Knobloch, Florian and Braunschweig, Nico}, title = {A Traffic-Aware Moving Light System Featuring Optimal Energy Efficiency}, series = {IEEE Sensors Journal}, volume = {17}, journal = {IEEE Sensors Journal}, number = {23}, doi = {10.1109/JSEN.2017.2669398}, pages = {7731 -- 7740}, year = {2017}, language = {en} } @inproceedings{Oertel2015, author = {Oertel, Christian}, title = {75 years tyre modelling for vehicle dynamics analysis: review and future challenges}, series = {Proceedings of the 4th International Tyre Colloquium : tyre models for vehicle dynamics analysis : 20-21 April 2015, University of Surrey, Guildford, United Kingdom}, booktitle = {Proceedings of the 4th International Tyre Colloquium : tyre models for vehicle dynamics analysis : 20-21 April 2015, University of Surrey, Guildford, United Kingdom}, editor = {Gruber, Patrick}, publisher = {University of Surrey}, address = {Guildford}, isbn = {978-1-84469-031-2}, pages = {11 -- 20}, year = {2015}, language = {en} } @inproceedings{Knobloch2015, author = {Knobloch, Florian}, title = {Channel gain and frame error rate for optical street lighting communication}, series = {2015 13th International Conference on Telecommunications (ConTEL)}, booktitle = {2015 13th International Conference on Telecommunications (ConTEL)}, publisher = {IEEE}, doi = {10.1109/ConTEL.2015.7231194}, year = {2015}, language = {en} } @incollection{Muendemann1993, author = {M{\"u}ndemann, Friedhelm}, title = {Fuzzy concepts for predicting the behaviour of other drivers on a highway}, series = {Fuzzy Logic in Artificial Intelligence Lecture Notes in Computer Science}, booktitle = {Fuzzy Logic in Artificial Intelligence Lecture Notes in Computer Science}, publisher = {Springer Verlag}, address = {Berlin Heidelberg}, doi = {10.1007/3-540-56920-0_18}, pages = {165 -- 173}, year = {1993}, language = {en} } @article{ZehnerSchweigerObeidietal.2010, author = {Zehner, Christian and Schweiger, Hans-Georg and Obeidi, Ossama and Komesker, Oliver and Raschke, Andre and Schiemann, Michael and Gehnen, Markus and Keller, Michael and Birke, Peter}, title = {Comparison of Several Methods for Determining the Internal Resistance of Lithium Ion Cells}, series = {Sensors}, volume = {10}, journal = {Sensors}, number = {6}, doi = {10.3390/s100605604}, pages = {5604 -- 5625}, year = {2010}, language = {en} } @article{VollmerShaw2018, author = {Vollmer, Michael and Shaw, Joseph A.}, title = {Extended visual range during solar eclipses}, series = {Applied Optics}, volume = {57}, journal = {Applied Optics}, number = {12}, doi = {10.1364/AO.57.003250}, pages = {3250 -- 3259}, year = {2018}, language = {en} } @article{Vollmer2009, author = {Vollmer, Michael}, title = {Asymmetrische Polarlichter}, series = {Physik in unserer Zeit}, volume = {40}, journal = {Physik in unserer Zeit}, number = {6}, doi = {10.1002/piuz.200990107}, pages = {275 -- 275}, year = {2009}, language = {de} } @article{OertelLiuZhouetal.2018, author = {Oertel, Christian and Liu, Zhe and Zhou, Fuqiang and Wei, Yintao}, title = {Three-dimensional vibration of a ring with a noncircular cross-section on an elastic foundation}, series = {Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science}, volume = {232}, journal = {Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science}, number = {13}, doi = {10.1177/0954406217720823}, pages = {2381 -- 2393}, year = {2018}, language = {en} } @inproceedings{Kramann2019, author = {Kramann, Guido}, title = {Modulo}, pages = {993 -- 999}, year = {2019}, language = {en} } @article{WidjajaLoeweCosta2018, author = {Widjaja, Agnes S. N. and L{\"o}we, Katharina and Costa, Felipe Salerno}, title = {Design and simulation of a concentrated solar thermal system with an integrated concrete storage for continuous heat supply}, series = {Energy Procedia}, volume = {155}, journal = {Energy Procedia}, doi = {10.1016/j.egypro.2018.11.062}, pages = {121 -- 135}, year = {2018}, language = {en} } @incollection{WienekeToutaouiSchmuetzFritz2018, author = {Wieneke-Toutaoui, Burghilde and Schm{\"u}tz, J{\"o}rg and Fritz, Alfred Herbert}, title = {Urformen}, series = {Fertigungstechnik}, booktitle = {Fertigungstechnik}, edition = {12}, publisher = {Springer Vieweg}, address = {Berlin / Heidelberg}, isbn = {978-3-662-56534-6}, doi = {10.1007/978-3-662-56535-3_2}, publisher = {Technische Hochschule Brandenburg}, pages = {7 -- 132}, year = {2018}, language = {de} } @inproceedings{Kramann2019, author = {Kramann, Guido}, title = {Generative Grammar Based on Arithmetic Operations for Realtime Composition}, series = {Proc. of the 14th International Symposium on CMMR, Marseille, France, Oct. 14-18, 2019}, booktitle = {Proc. of the 14th International Symposium on CMMR, Marseille, France, Oct. 14-18, 2019}, pages = {346 -- 360}, year = {2019}, language = {en} } @unpublished{VogelWoelferRamirezDiazetal.2020, author = {Vogel, Sven K. and W{\"o}lfer, Christian and Ramirez-Diaz, Diego A. and Flassig, Robert J. and Sundmacher, Kai and Schwille, Petra}, title = {Symmetry breaking and emergence of directional flows in minimal actomyosin cortices}, doi = {10.20944/preprints202004.0008.v1}, pages = {10}, year = {2020}, language = {en} } @misc{Ghazi2021, type = {Master Thesis}, author = {Ghazi, Muhammad Hizri}, title = {Marktrecherche zur Lades{\"a}ulen hinsichtlich Wirtschaftlichkeit und Marktverf{\"u}gbarkeit}, address = {Brandenburg an der Havel}, doi = {10.25933/opus4-2664}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-26641}, school = {Technische Hochschule Brandenburg}, pages = {60}, year = {2021}, abstract = {In den vergangenen Jahren gewann insbesondere durch den Launch des Tesla Elektrofahrzeugs die Elektromobilit{\"a}t in Bezug auf Automobile zunehmend an Bedeutung. Insbesondere aufgrund der zunehmenden CO2-Emissionen sowie der stetig steigenden {\"O}l-Knappheit r{\"u}ckt das Elektroauto zunehmend in den Vordergrund. Die vorliegende wissenschaftliche Arbeit untersuchte im Wesentlichen die Ladeinfrastruktur von Elektrofahrzeug sowie die Entwicklung dieser und die zum aktuellen Zeitpunkt bestehenden Tarifbedingung in Deutschland. Die Betrachtung der Ladeinfrastruktur ist eben aus dem Grund erforderlich gewesen, da diese eine Schl{\"u}sselrolle f{\"u}r Endkunden bei der Kaufentscheidung eines Elektrofahrzeugs spielt. Die Wesentliche Zielsetzung der Arbeit bestand darin, die unterschiedlichen bestehenden Betreiberkonzepte in Bezug auf die Ladeinfrastruktur f{\"u}r Kommunen zu analysieren und im Hinblick auf die Wirtschaftlichkeit sowie die Marktverf{\"u}gbarkeit zu evaluieren.}, language = {de} } @inproceedings{Kramann2021, author = {Kramann, Guido}, title = {Generative Grammar Based on Arithmetic Operations for Realtime Composition}, series = {Perception, Representations, Image, Sound, Music : 14th International Symposium, CMMR 2019, Marseille, France, October 14-18, 2019}, booktitle = {Perception, Representations, Image, Sound, Music : 14th International Symposium, CMMR 2019, Marseille, France, October 14-18, 2019}, editor = {Kronland-Martinet, Richard}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-70210-6}, doi = {10.1007/978-3-030-70210-6_19}, pages = {279 -- 303}, year = {2021}, language = {en} } @article{AgafonovaKozyrevMukhinetal.2018, author = {Agafonova, D. S. and Kozyrev, A. B. and Mukhin, N. V. and Red'ka, D. N. and Elanskaya, G. K. and Rudenko, M. V. and Oseev, A. and Hirsch, S{\"o}ren}, title = {Impurity Phases in Polycrystalline Films of Ferroelectric Oxides of the Perovskite-Type on the Basis of Bi2SrTa2O9 and Pb(Zr,Ti)O3}, series = {Glass Physics and Chemistry}, volume = {44}, journal = {Glass Physics and Chemistry}, number = {1}, doi = {10.1134/S1087659618010029}, pages = {15 -- 20}, year = {2018}, language = {en} } @article{OseevMukhinLucklumetal.2018, author = {Oseev, Aleksandr and Mukhin, Nikolay and Lucklum, Ralf and Zubtsov, Mikhail and Schmidt, Marc-Peter and Steinmann, Ulrike and Fomin, Aleksandr and Kozyrev, Andrey and Hirsch, S{\"o}ren}, title = {Study of liquid resonances in solid-liquid composite periodic structures (phononic crystals) - theoretical investigations and practical application for in-line analysis of conventional petroleum products}, series = {Sensors and Actuators B: Chemical}, volume = {257}, journal = {Sensors and Actuators B: Chemical}, doi = {10.1016/j.snb.2017.10.144}, pages = {469 -- 477}, year = {2018}, language = {en} } @inproceedings{RichardsHuebnerVollmer2018, author = {Richards, A. and H{\"u}bner, M. and Vollmer, Michael}, title = {Measurements of SWIR backgrounds using the swux unit of measure}, series = {Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXIX : 17-18 April 2018, Orlando, Florida, United States}, booktitle = {Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXIX : 17-18 April 2018, Orlando, Florida, United States}, editor = {Holst, Gerald C.}, publisher = {SPIE}, address = {Bellingham, Washington, USA}, doi = {10.1117/12.2305282}, year = {2018}, language = {en} } @article{PtashnikMikhailovYastrebovetal.2017, author = {Ptashnik, Sergey V. and Mikhailov, Anatoliy K. and Yastrebov, Alexander V. and Petrov, Peter K. and Liu, Wei and McN Alford, Neil and Hirsch, Soeren and Kozyrev, Andrey B.}, title = {Ferroelectric thin film acoustic devices with electrical multiband switching ability}, series = {Scientific Reports}, volume = {7}, journal = {Scientific Reports}, number = {15289}, doi = {10.1038/s41598-017-14895-8}, year = {2017}, language = {en} } @article{OseevLucklumZubtsovetal.2017, author = {Oseev, Aleksandr and Lucklum, Ralf and Zubtsov, Mikhail and Schmidt, Marc-Peter and Mukhin, Nikolay V. and Hirsch, Soeren}, title = {SAW-Based Phononic Crystal Microfluidic Sensor—Microscale Realization of Velocimetry Approaches for Integrated Analytical Platform Applications}, series = {Sensors}, volume = {17}, journal = {Sensors}, number = {10}, doi = {10.3390/s17102187}, pages = {2187}, year = {2017}, language = {en} } @article{RedkaMukhinGrishkanichetal.2019, author = {Redka, D. and Mukhin, N. and Grishkanich, A. and Terukov, E. and Hirsch, S{\"o}ren and Ignateva, L.}, title = {NdYAG surface modification of ZnO for solar cells}, series = {Journal of Physics: Conference Series}, volume = {1410}, journal = {Journal of Physics: Conference Series}, publisher = {IOP Publishing}, doi = {10.1088/1742-6596/1410/1/012106}, pages = {012106}, year = {2019}, language = {en} } @article{KurachkinaKonshinaOseevetal.2018, author = {Kurachkina, Margarita and Konshina, Elena and Oseev, Aleksandr and Hirsch, S{\"o}ren}, title = {Hybrid structures based on gold nanoparticles and semiconductor quantum dots for biosensor applications}, series = {Nanotechnology Science and Applications}, volume = {11}, journal = {Nanotechnology Science and Applications}, doi = {10.2147/nsa.s155045}, pages = {15 -- 21}, year = {2018}, language = {en} } @article{LiefoldWagnerPokrakaetal.2018, author = {Liefold, Marius and Wagner, Dennis and Pokraka, Alexander and Schrader, Thomas}, title = {Low-Cost Medical Infrastructure: Triage as intelligent decision support}, series = {Electronic Imaging, Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications}, journal = {Electronic Imaging, Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications}, publisher = {Society for Imaging Science and Technology}, doi = {10.2352/ISSN.2470-1173.2018.06.MOBMU-116}, pages = {116-1 -- 116-4}, year = {2018}, language = {en} } @article{MukhinRedkaTarasovetal.2018, author = {Mukhin, N.V. and Redka, D. N. and Tarasov, S. A. and Oseev, A. Yu. and Hirsch, S{\"o}ren}, title = {Two-Dimensional Periodic Composite Structure for Acoustic Sensor of Volumetric Properties of Liquids}, series = {Journal of the Russian Universities. Radioelectronics}, journal = {Journal of the Russian Universities. Radioelectronics}, number = {1}, doi = {10.32603/1993-8985-2018-21-1-56-63}, pages = {56 -- 63}, year = {2018}, language = {ru} } @inproceedings{RedkaMukhinGrishkanichetal.2018, author = {Redka, D. and Mukhin, N. and Grishkanich, A. and Terukov, E. and Hirsch, S{\"o}ren}, title = {Surface modification of ZnO for solar converters by NdYaG Laser}, series = {International Conference Laser Optics (ICLO), St. Petersburg, 2018}, booktitle = {International Conference Laser Optics (ICLO), St. Petersburg, 2018}, publisher = {IEEE}, doi = {10.1109/LO.2018.8435248}, pages = {340 -- 340}, year = {2018}, language = {en} } @article{OseevMukhinLucklumetal.2018, author = {Oseev, Aleksandr and Mukhin, Nikolay V. and Lucklum, Ralf and Zubtsov, Mikhail and Schmidt, Marc-Peter and Redka, Dmitrii and Kozyrev, Andrey and Hirsch, S{\"o}ren}, title = {Towards macroporous phononic crystal based structures for FBAR applications. Theoretical investigation of technologically competitive solutions}, series = {Microsystem Technologies}, volume = {24}, journal = {Microsystem Technologies}, number = {5}, doi = {10.1007/s00542-017-3616-1}, pages = {2389 -- 2399}, year = {2018}, language = {en} } @incollection{ElbagouryShalhoubRoushdyetal.2018, author = {Elbagoury, B. M. and Shalhoub, M. B. H. B. and Roushdy, M. I. and Schrader, Thomas}, title = {State of the Art: Artificial Intelligent Technologies for Mobile Health of Stroke Monitoring and Rehabilitation Robotics Control}, series = {Emerging Technologies for Health and Medicine}, booktitle = {Emerging Technologies for Health and Medicine}, editor = {Le, Dac-Nhuong}, publisher = {Scrivener Publishing ; Wiley}, address = {Beverly, MA ; Hoboken, NJ}, isbn = {9781119509813 (Print)}, doi = {10.1002/9781119509875.ch7}, publisher = {Technische Hochschule Brandenburg}, pages = {87 -- 101}, year = {2018}, language = {en} } @article{KombeLang'atNjoguetal.2022, author = {Kombe, Emmanuel Yeri and Lang'at, Nickson and Njogu, Paul and Malessa, Reiner and Weber, Christian-Toralf and Njoka, Francis and Krause, Ulrich}, title = {Process modeling and evaluation of optimal operating conditions for production of hydrogen-rich syngas from air gasification of rice husks using aspen plus and response surface methodology}, series = {Bioresource Technology}, volume = {361}, journal = {Bioresource Technology}, publisher = {Elsevier}, issn = {0960-8524}, pages = {1 -- 11}, year = {2022}, abstract = {Biomass gasification is recognized as a viable avenue to accelerate the sustainable production of hydrogen. In this work, a numerical simulation model of air gasification of rice husks is developed using the Aspen Plus to investigate the feasibility of producing hydrogen-rich syngas. The model is experimentally validated with rice husk gasification results and other published studies. The influence of temperature and equivalence ratio on the syngas composition, H2 yield, LHVSyngas, H2/CO ratio, CGE, and PCG was studied. Furthermore, the synchronized effects of temperature and ER are studied using RSM to determine the operational point of maximizing H2 yield and PCG. The RSM analysis results show optimum performance at temperatures between 820 °C and 1090 °C and ER in the range of 0.06-0.10. The findings show that optimal operating conditions of the gasification system can be achieved at a more refined precision through simulations coupled with advanced optimization techniques.}, language = {en} } @article{RuzankinaMukhinMermouletal.2022, author = {Ruzankina, Iuliia and Mukhin, Nikolay and Mermoul, Ali and Parfenov, Vadim and Fron, Eduard and Ferrini, Gabriele}, title = {Surface optical sensitivity enhanced by a single dielectric microsphere}, series = {Optics Express}, volume = {30}, journal = {Optics Express}, number = {24}, publisher = {Optica}, pages = {43021 -- 43036}, year = {2022}, abstract = {Single dielectric microspheres can manipulate light focusing and collection to enhance optical interaction with surfaces. To demonstrate this principle, we experimentally investigate the enhancement of the Raman signal collected by a single dielectric microsphere, with a radius much larger than the exciting laser spot size, residing on the sample surface. The absolute microsphere-assisted Raman signal from a single graphene layer measured in air is more than a factor of two higher than that obtained with a high numerical aperture objective. Results from Mie's theory are used to benchmark numerical simulations and an analytical model to describe the isolated microsphere focusing properties. The analytical model and the numerical simulations justify the Raman signal enhancement measured in the microsphere-assisted Raman spectroscopy experiments.}, language = {en} } @techreport{Schugardt2023, author = {Schugardt, Alexander}, title = {Untersuchung der Rotorfestigkeit von permanenterregten Synchronmaschinen mit vergrabenen Magneten}, publisher = {Technische Hochschule Brandenburg}, address = {Brandenburg an der Havel}, doi = {10.25933/opus4-2961}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-29610}, pages = {34}, year = {2023}, abstract = {Diese Projektarbeit behandelt die mechanische Simulation der Rotoren von permanenterregten Synchronmaschinen f{\"u}r den Festigkeitsnachweis. Hierzu wird die Finite-Elemente-Methode mit dem Programm CalculiX verwendet. Als Beispiel wird der Elektromotor des Toyota Prius II im Detail betrachtet. Hierbei werden die unterschiedlichen Lasten modelliert, dazu z{\"a}hlen neben der Zentrifugalkraft auch der Innendruck durch eine Presspassung sowie die elektromagnetischen Kr{\"a}fte. F{\"u}r die Modellierung von Kr{\"a}ften auf der Rotoroberfl{\"a}che wird eine Methodik zur Umsetzung in CalculiX entwickelt und anhand eines Beispielmodells demonstriert. Der angestrebte Festigkeitsnachweis kann im Rahmen dieser Arbeit erbracht werden. Weiterhin wird gezeigt, dass der Einfluss der elektromagnetischen Kr{\"a}fte im Arbeitspunkt mit der h{\"o}chsten Drehzahl sehr gering ausf{\"a}llt. Insgesamt bietet diese Arbeit die Grundlagen f{\"u}r mechanische Modellierungen von Rotoren unter Ber{\"u}cksichtigung aller Kr{\"a}fte. Dies kann direkt auf andere Elektromotoren angewendet werden.}, subject = {Rotor }, language = {de} } @article{Uhl2023, author = {Uhl, Roland}, title = {Charakterisierung des Erwartungswertes am Graphen der Verteilungsfunktion}, publisher = {Technische Hochschule Brandenburg}, address = {Brandenburg an der Havel}, doi = {10.25933/opus4-2986}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-29862}, pages = {10}, year = {2023}, abstract = {Der Erwartungswert einer Zufallsgr{\"o}ße kann generell am Graphen ihrer Verteilungsfunktion durch eine naheliegende Gleichheit zweier Fl{\"a}cheninhalte festgelegt werden. {\"A}quivalent dazu l{\"a}sst er sich mit zwei uneigentlichen Riemann-Integralen darstellen. Davon ausgehend werden die Tschebyschow-Ungleichung und ihre Modifikation mit strikten Ungleichheitszeichen hergeleitet.}, subject = {Verteilungsfunktion}, language = {de} } @inproceedings{VogelGoschinFlassig2022, author = {Vogel, Mathias and Goschin, Tobias and Flassig, Robert}, title = {Techno-economic analysis of excess wind energy utilization in the energy supply of residential quarters}, series = {Konferenz: Symposium on Control of Power and Energy Systems (CPES), 2022/ Konferenzband:11th IFAC Symposium on Control of Power and Energy Systems (CPES 2022)}, booktitle = {Konferenz: Symposium on Control of Power and Energy Systems (CPES), 2022/ Konferenzband:11th IFAC Symposium on Control of Power and Energy Systems (CPES 2022)}, publisher = {Elsevier}, isbn = {978-1-71385-937-6}, doi = {10.32479/ijeep.8067}, pages = {558}, year = {2022}, language = {en} } @inproceedings{Kramann2020, author = {Kramann, Guido}, title = {Of renouncing to do something grandiose}, series = {Konferenz: X ubimus - Ubiquitous Music Workshop 2020, Online, 2020/ Konferenzband: Proceedings of the 10th Workshop on Ubiquitous Music (UbiMus); November 9 - 13, 2020 (online)}, booktitle = {Konferenz: X ubimus - Ubiquitous Music Workshop 2020, Online, 2020/ Konferenzband: Proceedings of the 10th Workshop on Ubiquitous Music (UbiMus); November 9 - 13, 2020 (online)}, publisher = {Zenodo}, address = {Online}, isbn = {978-65-00-10188-1}, doi = {10.5281/zenodo.4246025}, pages = {21 -- 35}, year = {2020}, abstract = {A central idea of ubiquitous music is that music does not arise from the ideas of an isolated genius, but rather from the interaction of several participants [Keller et al. 2014]. But this requires a certain amount of restraint on the part of the designers of the respective setting and at the same time seems to require a full disclosure of the underlying theoretical and aesthetic concepts to the participants, if the participants are really to be taken seriously and given the means to actually be able to become creative themselves in an understandable way within the given context. In this paper, the consequences of such a demand are first discussed theoretically. Finally, for the concept developed by the author, "Every human being can compose on the basis of natural numbers", an attempt is made in this specific case to determine in what form such a concept could be passed on in order to meet the above criteria.}, language = {en} } @misc{DasChaurasiaMandaletal.2023, author = {Das, Atanu and Chaurasia, Prashtan Kumar and Mandal, Gopi K. and Goecke, Sven-Frithjof and De, Amitava}, title = {Sample calculations to estimate joint distortion based on the published article "Analytical Estimation of Thermomechanical Distortion and Interface Layer Thickness for Gas Metal Arc Lap Joining of Dissimilar Sheets"}, year = {2023}, abstract = {A sample set of calculations is presented in this supplemental document to analytically estimate joint distortion for gas metal arc lap joining of aluminum and steel thin sheets following the published article "Analytical Estimation of Thermomechanical Distortion and Interface Layer Thickness for Gas Metal Arc Lap Joining of Dissimilar Sheets"}, language = {en} } @article{DasChaurasiaMandaletal.2023, author = {Das, Atanu and Chaurasia, Prashtan Kumar and Mandal, Gopi K. and Goecke, Sven-Frithjof and De, Amitava}, title = {Analytical estimation of thermomechanical distortion and interface layer thickness for gas metal arc lap joining of dissimilar sheets}, series = {Welding in the World}, journal = {Welding in the World}, number = {76/2023}, publisher = {Springer Link}, issn = {432288}, doi = {10.1007/s40194-01426-x}, pages = {33 -- 49}, year = {2023}, language = {en} } @article{ChaurasiaGoeckeDe2023, author = {Chaurasia, Prashtan Kumar and Goecke, Sven-Frithjof and De, Amitava}, title = {Monitoring melt pool asymmetry in gas metal arc-directed energy deposition}, series = {Science and Technology of Welding and Joining}, journal = {Science and Technology of Welding and Joining}, number = {Augabe 5/ Band 28}, publisher = {Taylor and Fracis}, issn = {1362-1718 (PRINT)}, doi = {10.1080/13621718.2023.2168933}, pages = {424 -- 432}, year = {2023}, language = {en} } @incollection{Eichstaedt2020, author = {Eichst{\"a}dt, Justus}, title = {Rathenow: Wiege der optischen Industrie}, series = {Rathenow: Wiege der optischen Industrie: zur Entwicklung der Rathenower optischen Industrie von ihren Anf{\"a}ngen bis zur Gegenwart}, booktitle = {Rathenow: Wiege der optischen Industrie: zur Entwicklung der Rathenower optischen Industrie von ihren Anf{\"a}ngen bis zur Gegenwart}, editor = {G{\"o}tze, Bettina and Mertens, Joachim}, edition = {1.}, publisher = {VBB, Verlag f{\"u}r Berlin-Brandenburg}, address = {Berlin}, isbn = {978-3-947215-67-6}, year = {2020}, language = {de} } @article{ChaurasiaGoeckeDe2023, author = {Chaurasia, Prashant Kumar and Goecke, Sven Frithjof and De, Amitava}, title = {Towards real-time monitoring of metal transfer and melt pool temperature field in gas metal arc directed energy deposition}, series = {Welding in the World}, journal = {Welding in the World}, number = {67}, publisher = {Springer Link}, doi = {https://doi.org/10.1007/s40194-023-01534-2}, pages = {1781 -- 1791}, year = {2023}, abstract = {Large three-dimensional metallic parts can be printed layer-by-layer using gas metal arc directed energy deposition (GMA-DED) process at a high deposition rate and with little or no material wastage. Fast responsive real-time monitoring of GMA-DED process signatures and their transient variations is required for printing of dimensionally accurate and structurally sound parts. A systematic experimental investigation is presented here on multi-layer GMA-DED with two different scanning strategies using a high strength low alloy (HSLA) filler wire. The dynamic metal transfer, melt pool temperature field and its longitudinal cross-section, and arc voltage and current are monitored synchronously. The transient arc heat input and the melt pool solidification cooling rate are estimated from the monitored signals. The layer-wise variations of the melt pool dimension, surface temperature profile, thermal cycles, and solidification cooling rate are examined for different scanning strategies. It is comprehended that the part defects can be minimized, and the mass production of zero-defect parts can be achieved in GMA-DED process with synchronized monitoring and assessment of the real-time process signatures.}, language = {en} } @article{RevinaAksu2023, author = {Revina, Aleksandra and Aksu, {\"U}nal}, title = {An approach for analyzing business process execution complexity based on textual data and event log}, series = {Information Systems}, journal = {Information Systems}, number = {114}, publisher = {Elsevier}, doi = {10.1016/j.is.2023.102184}, year = {2023}, abstract = {With the advent of digital transformation, organizations increasingly rely on various information systems to support their business processes (BPs). Recorded data, including textual data and event log, expand exponentially, complicating decision-making and posing new challenges for BP complexity analysis in Business Process Management (BPM). Herein, Process Mining (PM) serves to derive insights based on historic BP execution data, called event log. However, in PM, textual data is often neglected or limited to BP descriptions. Therefore, in this study, we propose a novel approach for analyzing BP execution complexity by combining textual data serving as an input at the BP start and event log. The approach is aimed at studying the connection between complexities obtained from these two data types. For textual data-based complexity, the approach employs a set of linguistic features. In our previous work, we have explored the design of linguistic features favorable for BP execution complexity prediction. Accordingly, we adapt and incorporate them into the proposed approach. Using these features, various machine learning techniques are applied to predict textual data-based complexity. Moreover, in this prediction, we show the adequacy of our linguistic features, which outperformed the linguistic features of a widely-used text analysis technique. To calculate event log-based complexity, the event log and relevant complexity metrics are used. Afterward, a correlation analysis of two complexities and an analysis of the significant differences in correlations are performed. The results serve to derive recommendations and insights for BP improvement. We apply the approach in the IT ticket handling process of the IT department of an academic institution. Our findings show that the suggested approach enables a comprehensive identification of BP redesign and improvement opportunities.}, language = {en} } @incollection{RevinaRizunAksu2023, author = {Revina, Aleksandra and Rizun, Nina and Aksu, {\"U}nal}, title = {Towards a Framework for Context Awareness Based on Textual Process Data: Case Study Insights}, series = {Lecture Notes in Business Information Processing}, booktitle = {Lecture Notes in Business Information Processing}, number = {466}, publisher = {Springer Cham}, isbn = {978-3-031-26885-4 (Print) 978-3-031-26886-1 (online)}, doi = {https://doi.org/10.1007/978-3-031-26886-1_2}, year = {2023}, abstract = {Context awareness is critical for the successful execution of processes. In the abundance of business process management (BPM) research, frameworks exclusively devoted to extracting context from textual process data are scarce. With the deluge of textual data and its increasing value for organizations, it becomes essential to employ relevant text analytics techniques to increase the awareness of process workers, which is important for process execution. The present paper addresses this demand by developing a framework for context awareness based on process executions-related textual data using a well-established layered BPM context model. This framework combines and maps various text analytics techniques to the layers of the context model, aiming to increase the context awareness of process workers and facilitate informed decision-making. The framework is applied in an IT ticket processing case study. The findings show that contextual information obtained using our framework enriches the awareness of process workers regarding the process instance urgency, complexity, and upcoming tasks and assists in making decisions in terms of these aspects.}, language = {en} } @inproceedings{PlatonovAltynnikovMikhailovetal.2017, author = {Platonov, R. A. and Altynnikov, A. G. and Mikhailov, A. K. and Yastrebov, A. V. and Mukhin, N. V. and Hirsch, S{\"o}ren and Kozyrev, A. B.}, title = {Tunable impedance microwave matching of laser diodes}, series = {Konferenz: 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)/ Titel: 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)}, booktitle = {Konferenz: 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)/ Titel: 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)}, publisher = {IEEE}, address = {St Petersburg, Russia}, isbn = {978-1-5090-6269-0}, doi = {10.1109/PIERS.2017.8261920}, pages = {1152 -- 1157}, year = {2017}, language = {en} } @inproceedings{GoeckeSeefeldTyrallaetal.2019, author = {Goecke, Sven-Frithjof and Seefeld, T. and Tyralla, Dieter and Krug, A.}, title = {Monitoring and Control of the Heat Input in MAG-Laser-Hybrid Welding of High Strength Steel in Telescopic Crane Booms}, series = {Konferenz: IEEE International Conference on Automation Science and Engineering (CASE), 2019/ Titel: 2019 IEEE 15th International Conference on Automation Science and Engineering (CASE): August 22-26, 2019, Vancouver, BC, Canada}, booktitle = {Konferenz: IEEE International Conference on Automation Science and Engineering (CASE), 2019/ Titel: 2019 IEEE 15th International Conference on Automation Science and Engineering (CASE): August 22-26, 2019, Vancouver, BC, Canada}, publisher = {IEEE}, address = {Piscataway, New Jersey}, isbn = {978-1-72810-355-6}, doi = {10.1109/COASE.2019.8843219}, year = {2019}, language = {en} } @article{Vollmer2019, author = {Vollmer, Michael}, title = {The freezing of lakes in winter}, series = {European Journal of Physics}, journal = {European Journal of Physics}, number = {Ausgabe: 3/ Band: 40}, publisher = {IOP Publishing}, issn = {1367-2630}, doi = {10.1088/1361-6404/ab07f8}, year = {2019}, abstract = {Freezing of lakes is described using a simplified one-dimensional model, which gives ice thickness, ice growth rates, and ice surface temperature as a function of time. Model data for a specific lake with known meteorological conditions are compared to estimated ice thickness using a simple optical method. Finally, more advanced potential students projects are briefly discussed and results of a numerical solution are compared to the simplified model.}, language = {en} } @article{VollmerMustard2019, author = {Vollmer, Michael and Mustard, Alexander}, title = {Blue - the color of (pure) water}, series = {Physics Education}, journal = {Physics Education}, number = {Ausgabe: 4/ Band: 54}, publisher = {IOP Publishing}, issn = {0031-9120 (print) 1361-6552 (online)}, doi = {10.1088/1361-6552/ab130a}, year = {2019}, abstract = {Water can exhibit many different colors due to a variety of physical properties. Here, we focus on some observable colors within very pure freshwater. We only treat the absorption of light due to electronic and ro-vibrational excitations and scattering due to refractive index fluctuations of the water and the respective consequences for the appearance of colors.}, language = {en} } @inproceedings{SchmidtOseevEngeletal.2014, author = {Schmidt, Marc-Peter and Oseev, Aleksandr and Engel, C. and Brose, Andreas and Aman, Alexander and Hirsch, S{\"o}ren}, title = {A Novel Design and Fabrication of Multichannel Microfluidic Impedance Spectroscopy Sensor for Intensive Electromagnetic Environment Application}, series = {Konferenz: The 28th European Conference on Solid-State Transducers (EUROSENSORS)/ Titel: Procedia Engineering 2014}, booktitle = {Konferenz: The 28th European Conference on Solid-State Transducers (EUROSENSORS)/ Titel: Procedia Engineering 2014}, number = {87}, publisher = {Elsevier}, address = {Brescia, Italy}, doi = {10.1016/j.proeng.2014.11.272}, pages = {88 -- 91}, year = {2014}, language = {en} } @inproceedings{SchmidtOseevEngeletal.2014, author = {Schmidt, Marc-Peter and Oseev, Alexander and Engel, C. and Brose, Andreas and Hirsch, S{\"o}ren}, title = {IMPEDANCE SPECTROSCOPY MICROFLUIDIC MULTICHANNEL SENSOR PLATFORM FOR LIQUID ANALYSIS}, series = {Konferenz: International Conference on Miniaturized Systems for Chemistry and Life Sciences/ Titel: 18th International Conference on Miniaturized Systems for Chemistry and Life Sciences : (MicroTAS 2014); San Antonio, Texas, USA, 26 - 30 October 2014 / [CBMS] ; Vol. 4}, booktitle = {Konferenz: International Conference on Miniaturized Systems for Chemistry and Life Sciences/ Titel: 18th International Conference on Miniaturized Systems for Chemistry and Life Sciences : (MicroTAS 2014); San Antonio, Texas, USA, 26 - 30 October 2014 / [CBMS] ; Vol. 4}, number = {4}, publisher = {Curran}, address = {Red Hook, NY}, isbn = {978-1-63439-697-4}, doi = {10.13140/2.1.4254.8004}, pages = {1957 -- 2577}, year = {2014}, language = {en} } @article{SchmidtAmanMajchereketal.2014, author = {Schmidt, Marc-Peter and Aman, Alexander and Majcherek, S{\"o}ren and Hirsch, S{\"o}ren}, title = {Microwave Sensor for Mechanical Stress Measurement Based on Ferroelectric Graphene Nanosheet Composites}, series = {Procedia Engineering}, journal = {Procedia Engineering}, publisher = {Elsevier}, issn = {18777058}, doi = {10.1016/j.proeng.2014.11.399}, pages = {124 -- 127}, year = {2014}, language = {en} } @techreport{GoeckeMuellerEbertSpiegel2015, author = {Goecke, Sven-Frithjof and M{\"u}ller, Alexander and Ebert-Spiegel, Michael}, title = {ECOWELD - Energiegeregeltes Metallschutzgas- und Laserschweißen : "Ingenieurnachwuchs" 2011 (Maschinenbau) : Ausschreibung der F{\"o}rderlinie "Qualifizierung von Ingenieurnachwuchs an Fachhochschulen" 2011 im Rahmen des Programms "Forschung an Fachhochschulen" : Schlussbericht : Laufzeit des Vorhabens von: 01.08.2011 bis: 31.03.2015}, doi = {10.2314/GBV:867121742}, pages = {55}, year = {2015}, language = {de} } @inproceedings{SchmidtOseevEngeletal.2015, author = {Schmidt, Marc-Peter and Oseev, Aleksandr and Engel, Christian and Brose, Andreas and Hirsch, S{\"o}ren}, title = {A7.1 - Flexible free-standing SU-8 microfluidic impendance spectroscopy sensor for 3D molded interconnect devices application}, series = {Konferenz: AMA Conferences 2015/ Titel: Proceedings SENSOR 2015}, booktitle = {Konferenz: AMA Conferences 2015/ Titel: Proceedings SENSOR 2015}, publisher = {AMA Service GmbH}, address = {N{\"u}rnberg, Germany}, isbn = {978-3-9813484-8-4}, doi = {10.5162/sensor2015/A7.1}, pages = {151 -- 155}, year = {2015}, language = {en} } @inproceedings{SchmidtOseevLucklumetal.2015, author = {Schmidt, Marc-Peter and Oseev, Aleksandr and Lucklum, Ralf and Hirsch, S{\"o}ren}, title = {Technology towards a SAW based phononic crystal sensor}, series = {Konferenz: SPIE Microtechnologies, Barcelona, Spain, 2015/ Titel: PROCEEDINGS VOLUME 9517 SPIE MICROTECHNOLOGIES | 4-6 MAY 2015 Smart Sensors, Actuators, and MEMS VII; and Cyber Physical Systems}, booktitle = {Konferenz: SPIE Microtechnologies, Barcelona, Spain, 2015/ Titel: PROCEEDINGS VOLUME 9517 SPIE MICROTECHNOLOGIES | 4-6 MAY 2015 Smart Sensors, Actuators, and MEMS VII; and Cyber Physical Systems}, editor = {S{\´a}nchez-Rojas, Jos{\´e} Luis and Brama, Riccardo}, doi = {10.1117/12.2178810}, year = {2015}, language = {en} } @inproceedings{BraemerViebackSchilleretal.2015, author = {Br{\"a}mer, Stefan and Vieback, Linda and Schiller, Gregor and Hirsch, S{\"o}ren}, title = {Situiertes Lernen in der dualen Berufsausbildung. Entwicklung eines Lehr-Lern-Arrangements f{\"u}r den Ausbildungsinhalt „Sicherheit und Gesundheitsschutz bei der Arbeit"}, series = {Konferenz: 61. GfA-Fr{\"u}hjahrskongress, 2015/ Titel: Verantwortung f{\"u}r die Arbeit der Zukunft 61. GfA-Fr{\"u}hjahrskongress, 25. - 27.02.2015, Karlsruhe}, booktitle = {Konferenz: 61. GfA-Fr{\"u}hjahrskongress, 2015/ Titel: Verantwortung f{\"u}r die Arbeit der Zukunft 61. GfA-Fr{\"u}hjahrskongress, 25. - 27.02.2015, Karlsruhe}, publisher = {GfA-Press}, address = {Dortmund}, isbn = {978-3-936804-18-8}, year = {2015}, language = {de} } @inproceedings{OseevSchmidtLucklumetal.2015, author = {Oseev, Aleksandr and Schmidt, Marc-Peter and Lucklum, Ralf and Zubtsov, Mikhail and Hirsch, S{\"o}ren}, title = {Phononic crystal based liquid sensor governed by localized defect resonances}, series = {Konferenz: IEEE Symposium (IUS) Ultrasonics, 2015/ Titel: 2015 IEEE International Ultrasonics Symposium (IUS)}, booktitle = {Konferenz: IEEE Symposium (IUS) Ultrasonics, 2015/ Titel: 2015 IEEE International Ultrasonics Symposium (IUS)}, publisher = {IEEE}, address = {Taipei, Taiwan}, isbn = {978-1-4799-8182-3}, doi = {10.1109/ULTSYM.2015.0053}, pages = {1 -- 4}, year = {2015}, language = {en} } @article{MajcherekAmanHirschetal.2015, author = {Majcherek, Soeren and Aman, A. and Hirsch, S{\"o}ren and Schmidt, B.}, title = {Silicon based in-situ measurement system for flex loads on MLCCs in PCB manufacturing chain}, series = {Sensors and Actuators A: Physical}, journal = {Sensors and Actuators A: Physical}, number = {233}, publisher = {Elsevier}, issn = {09244247}, doi = {10.1016/j.sna.2015.06.005}, pages = {267 -- 274}, year = {2015}, language = {en} } @article{AmanMajcherekHirsch2015, author = {Aman, Alexander and Majcherek, Soeren and Hirsch, S{\"o}ren}, title = {Microwave Emission of Carbon Fibres During Electrical Breakdown}, series = {Sensor Letters}, journal = {Sensor Letters}, number = {Ausgabe: 1/ Heft: 13}, publisher = {American Scientific Publishers}, issn = {1546198X, 15461971}, doi = {10.1166/sl.2015.3408}, pages = {98 -- 101}, year = {2015}, language = {en} } @inproceedings{SchmidtOseevLucklumetal.2016, author = {Schmidt, Marc-Peter and Oseev, Aleksandr and Lucklum, Ralf and Zubtsov, Mikhail and Hirsch, S{\"o}ren}, title = {SAW based phononic crystal liquid sensor - Periodic microfluidic channels approach}, series = {Konferenz: 2016 IEEE International Ultrasonics Symposium (IUS)/ Titel:2016 IEEE International Ultrasonics Symposium (IUS)}, booktitle = {Konferenz: 2016 IEEE International Ultrasonics Symposium (IUS)/ Titel:2016 IEEE International Ultrasonics Symposium (IUS)}, publisher = {IEEE}, address = {Tours, France}, isbn = {978-1-4673-9897-8}, doi = {10.1109/ULTSYM.2016.7728788}, pages = {1 -- 4}, year = {2016}, abstract = {Phononic crystals (PnC) with a specifically designed liquid-filled defect have been recently introduced as a novel sensor platform (Lucklum et al. in Sens Actuators B Chem 171-172:271-277, 2012). Sensors based on this principle feature a band gap covering the typical input span of the measurand as well as a narrow transmission peak within the band gap where the frequency of maximum transmission is governed by the measurand. This approach has been applied for determination of volumetric properties of liquids (Lucklum et al. in Sens Actuators B Chem 171-172:271-277, 2012; Oseev et al. in Sens Actuators B Chem 189:208-212, 2013; Lucklum and Li in Meas Sci Technol 20(12):124014, 2009) and has demonstrated attractive sensitivity. One way to improve sensitivity requires higher probing frequencies in the range of 100 MHz and above. In this range surface acoustic wave (SAW) devices are an established basis for sensors. We have performed first tests towards a PnC microsensors (Lucklum et al. in Towards a SAW based phononic crystal sensor platform. In: 2013 Joint European frequency and time forum and international frequency control symposium (EFTF/IFC), pp 69-72, 2013). The respective feature size of the PnC SAW sensor has dimensions in the range of 10 µm and below. Whereas those dimensions are state of the art for common MEMS materials, etching of holes and cavities in piezoelectric materials that have an aspect ratio diameter/depth is still challenging. In this contribution we describe an improved technological process able to realize considerably deep and uniform holes in a SAW substrate.}, language = {en} } @inproceedings{FominaKoshuroFominetal.2016, author = {Fomina, Marina A. and Koshuro, Vladimir A. and Fomin, Aleksandr A. and Rodionov, Igor V. and Skaptsov, Aleksandr A. and Zakharevich, Andrey M. and Aman, Alexander and Oseev, Aleksandr and Hirsch, S{\"o}ren and Majcherek, Soeren}, title = {Peculiarities of structure formation of layered metal-oxide system Ti-Ta-(Ti,Ta) x O y during electro-spark alloying and thermally stimulated modification}, series = {Konferenz: Saratov, Russian Federation/ Titel: PROCEEDINGS VOLUME 9917 SARATOV FALL MEETING 2015 | 22-25 SEPTEMBER 2015 Saratov Fall Meeting 2015: Third International Symposium on Optics and Biophotonics and Seventh Finnish-Russian Photonics and Laser Symposium (PALS)}, booktitle = {Konferenz: Saratov, Russian Federation/ Titel: PROCEEDINGS VOLUME 9917 SARATOV FALL MEETING 2015 | 22-25 SEPTEMBER 2015 Saratov Fall Meeting 2015: Third International Symposium on Optics and Biophotonics and Seventh Finnish-Russian Photonics and Laser Symposium (PALS)}, editor = {Tuchin, Valery V. and Derbov, Vladimir L. and Postnov, Dmitry E. and Meglinski, Igor V. and Larin, Kirill V. and Pravdin, Alexander B. and Genina, Elina A.}, publisher = {SPIE. Digital Library}, address = {Saratov, Russian Federation}, doi = {10.1117/12.2229491}, year = {2016}, abstract = {The study focuses on high-performance combined electro-spark alloying of titanium and titanium alloy (VT1-0, VT16) surface and porous matrix structure oxidation. The metal-oxide coatings morphology is the result of melt drop transfer, heat treatment, and oxidation. The study establishes the influence of technological regimes of alloying and oxidation on morphological heterogeneity of biocompatible layered metal-oxide system Ti-Ta-(Ti,Ta)xOy. It was found that during electro-spark alloying the concentration of tantalum on the titanium surface ranges from 0.1 to 3.2 at.\%. Morphology of the deposited splats is represented by uniformly grown crystals of titanium and tantalum oxides, which increase from nano- to submicron size.}, language = {en} } @article{LucklumZubtsovOseevetal.2016, author = {Lucklum, Ralf and Zubtsov, Mikhail and Oseev, Aleksandr and Schmidt, Marc-Peter and Hirsch, S{\"o}ren}, title = {SAW Based Sandwich Phononic Crystal Sensor}, series = {Procedia Engineering}, journal = {Procedia Engineering}, number = {168}, publisher = {Elsevier}, issn = {18777058}, doi = {10.1016/j.proeng.2016.11.251}, pages = {700 -- 703}, year = {2016}, abstract = {Sensing is nowadays an accepted application of phononic crystals with chemical and biosensors for liquid analytes being the perhaps most promising ones. A liquid-filled defect is introduced that turns into a resonant cavity. Similar to the well-known resonant sensors sensitivity can be increased with higher operating frequencies. We introduce a Sandwiched Phononic Crystal (SPC), which applies a resonant cavity located between two stacked layers on top of a SAW device. Key challenges are coupling of surface acoustic wave into the liquid cavities and avoiding scattering of the guided waves into the bulk of the sensor chip.}, language = {en} } @article{AmanMajcherekSchmidtetal.2016, author = {Aman, A. and Majcherek, Soeren and Schmidt, M. P. and Orseev, A. and Engel, C. and Hirsch, S{\"o}ren}, title = {Behavior of Current Flow on Lead Zirconate Titanate Surfaces during Mechanical Impact}, series = {Research \& Reviews: Journal of Material Sciences}, journal = {Research \& Reviews: Journal of Material Sciences}, number = {Ausgabe: 1/ Band: 4}, publisher = {Research and Reviews}, issn = {23216212}, doi = {10.4172/2321-6212.1000137}, year = {2016}, language = {en} } @article{SchmidtOseevLucklumetal.2016, author = {Schmidt, Marc-Peter and Oseev, Aleksandr and Lucklum, Ralf and Zubtsov, Mikhail and Hirsch, S{\"o}ren}, title = {SAW based phononic crystal sensor, technological challenges and solutions}, series = {Microsystem Technologies}, journal = {Microsystem Technologies}, publisher = {Springer Link}, issn = {0946-7076, 1432-1858}, doi = {10.1007/s00542-015-2781-3}, pages = {1593 -- 1599}, year = {2016}, language = {en} } @inproceedings{Kramann2023, author = {Kramann, Guido}, title = {AOGscript - Design of a Stand-Alone Scripting Language for the Generation of Music. Proceedings of the International Symposium on Ubiquitous Music, 2023}, series = {Konferenz: 13th International Symposium on Ubiquitous Music 2023 (Ubimus23) , Ulster University, Derry~Londonderry, Northern Ireland, 2-4 November, 2023}, booktitle = {Konferenz: 13th International Symposium on Ubiquitous Music 2023 (Ubimus23) , Ulster University, Derry~Londonderry, Northern Ireland, 2-4 November, 2023}, publisher = {Zenodo}, isbn = {978-65-00-85069-7}, doi = {10.5281/zenodo.10670220}, pages = {95 -- 109}, year = {2023}, abstract = {Ubiquitous Music is an interdisciplinary research area that combines methodologies from music, computer science, education, creativity studies, human sciences and engineering. The Ubiumus 2023 symposium, held at Ulster University and North West Regional College in Derry~Londonderry, Northern Ireland, included contributions on the following topics: Rapid Prototyping and Live Environments Ecological Approaches to Ubiquitous Music Ubiquitous Music Creative Practices, Tools and Influences The symposium also included a number of artistic contributions and workshops, which are also discussed in the proceedings volume. A number of events (including all paper presentations, an invited lecture, a panel discussion, and a keynote and associated performance) were also documented via video, with a link available in this Proceedings volume.}, language = {en} } @inproceedings{Guido2023, author = {Guido, Kramann}, title = {AOGscript, Generative Code as Conceptual Artwork: Giving Space to Astonishment. Proceedings of xCoAx 2023}, series = {Konferenz: xCoAx 2023 11th Conference on Computation, Communication, Aesthetics \& X}, booktitle = {Konferenz: xCoAx 2023 11th Conference on Computation, Communication, Aesthetics \& X}, publisher = {i2ADS}, address = {Porto, Portugal}, isbn = {978-989-9049-52-9}, doi = {10.34626/xcoax.2023}, pages = {401 -- 408}, year = {2023}, language = {en} } @inproceedings{MarkgrafDietrichMuelleretal.2023, author = {Markgraf, Klaus and Dietrich, Benjamin and M{\"u}ller, Katja and Flassig, Robert J and Flassig, Peter Michael}, title = {FINEconcepts - Wissenstransfer und Energiesystemoptimierung mithilfe des digitalen Zwillings}, series = {Konferenz: NWK 2023, HS Harz}, booktitle = {Konferenz: NWK 2023, HS Harz}, pages = {428 -- 435}, year = {2023}, abstract = {Climate change, but also geopolitical circumstances, are moving topics such as energy efficiency and renewable energies more and more into the focus of the population, economy , and politics. As a result, the will to optimize new and existing energy systems extends from private individuals to companies and even entire communities. This work describes the development and usage of a new software called FINEconcepts which creates a digital twin of an energy system. This virtual model can then be used to optimize the energy system based on annual costs, CO2 emissions or other relevant criteria such as self-sufficiency. Because all system components, which include renewable technologies as well, can be added as a building block with chosen but changeable parameters, the software allows the user to explore and awaken interest and understanding of technologies that were previously considered too costly, irrelevant, or unrealistic. Implemented projects in small and large companies as well as in residential areas did prove, that the usage of FINEconcepts leads not only to more efficient energy systems by increasing the use of renewable energy, but also increased knowledge and understanding in terms of energy. Besides economics, ecology and security, understanding is an equally important factor in achieving a sustainable energy supply.}, language = {de} } @article{VegaJechowJamesAetal.2023, author = {Vega, Catherine Perez and Jechow, Andreas and James A., Campbell and Zielinska-Dabkowska, Karolina M. and Hoelker, Franz}, title = {Light pollution from illuminated bridges as a potential barrier for migrating fish-Linking measurements with a proposal for a conceptual model}, series = {Basic and Applied Ecology}, volume = {74}, journal = {Basic and Applied Ecology}, publisher = {Elsevier}, issn = {1618-0089}, doi = {10.1016/j.baae.2023.11.001}, pages = {1 -- 12}, year = {2023}, abstract = {Illuminated bridges have become important assets to navigable aquatic systems. However, if artificial light at night (ALAN) from illuminated bridges reaches aquatic habitats, such as rivers, it can threaten the river's natural heterogeneity and alter the behavioural responses of migratory fish. Here, via a pilot study, we quantified levels of ALAN at illuminated bridges that cross a river and, propose a conceptual model to estimate its potential implications on two migrating fish species with contrasting life histories. Night-time light measurements on the river Spree in Berlin were performed continuously along a transect and in detail at seven illuminated bridges. Photometric data of the pilot study showed rapidly increased and decreased light levels at several illuminated bridges from which we derived several model illumination scenarios. These illumination scenarios and their potential effect on migrating Atlantic salmon smolts (Salmo salar) and European silver eel (Anguilla anguilla) are presented as a conceptual model, considering illuminated bridges as behavioural barriers to fish migration. ALAN's adverse effects on freshwater habitats must be better researched, understood, managed, and properly communicated to develop future sustainable lighting practices and policies that preserve riverscapes and their biodiversity.}, language = {en} } @article{Vollmer2023, author = {Vollmer, Michael}, title = {So weit das Auge tr{\"a}gt}, series = {Physik in unserer Zeit}, volume = {54}, journal = {Physik in unserer Zeit}, number = {5}, publisher = {Wiley}, issn = {1521-3943}, doi = {10.1002/piuz.202301675}, pages = {222 -- 230}, year = {2023}, abstract = {Sichtweiten in der Atmosph{\"a}re reichen von wenigen Metern im Nebel bis zu einigen hundert Kilometern bei extrem guten Fernsichtbedingungen. Die zugrundeliegende Physik geht vom Wahrnehmungskontrast aus. Dieser {\"a}ndert sich mit der Entfernung entlang der Sichtlinie zwischen Objekt und Auge aufgrund von Lichtstreuung und Absorption an den Bestandteilen der Atmosph{\"a}re. Dazu kommt bei der Fernsicht die Refraktion, die es erlaubt, auch {\"u}ber den durch die Kugelform der Erde geometrisch bedingten Horizont hinaus zu sehen.}, language = {de} } @inproceedings{Markgraf2024, author = {Markgraf, Klaus}, title = {Entwicklung eines Tools zur spezifischen, lastgangbasierten Eigenverbrauchsoptimierung mittels PV-Leistungsprognose}, series = {Konferenz: 18. Symposium Energieinnovation, 2024, Graz/Austria}, booktitle = {Konferenz: 18. Symposium Energieinnovation, 2024, Graz/Austria}, doi = {10.6084/m9.figshare.25610976}, pages = {1 -- 10}, year = {2024}, abstract = {The German government's initiative to cover 80\% of the gross electricity supply with renewable energies by 2050 brings considerable ecological benefits, but also poses several challenges. One of these challenges is the growing number of photovoltaic systems (PV systems), which, due to their high feed-in power, already pose a risk to the security of the electricity distribution grid during long periods of sunny weather. To counteract this, active research is being carried out in the field of PV power forecasting. This research is primarily aimed at providing the grid operator with a predicted power output, which enables a longer planning horizon and thus increases the operational grid security. However, the considerable annual electricity consumption of private households and the increasing spread of PV systems for self-consumption show that the energy behavior of households, especially self-consumption, also influences grid security. Additionally, households have an incentive to boost their self-consumption because the cost of drawing each kilowatt-hour from the grid is substantially higher than the compensation received for injecting an equivalent amount of energy back into the grid. However, as of now, there is no software available that easily enables households to tailor the usage patterns of their electrical appliances according to a photovoltaic (PV) forecast. The project described here aims to close this gap by creating such software. Various PV forecasting models are used and tested for their suitability for this purpose. A self-generated optimization process is implemented in this project to optimize the consumer configuration based on the PV forecasts. The here-developed tool enables the user to enter parameters for his PV system and the specific load profiles of his electrical appliances. Based on this data, the optimization algorithm determines a consumption plan with a forecast horizon until the end of the next day that maximizes the user's self-consumption. To validate the tool, the optimization process is carried out over a period of 60 days using a predefined scenario and the results are compared with a scenario in which the electrical appliances are intuitively operated at midday. The analysis of these results ultimately shows the potential impact of such a tool on the economic efficiency of private households and the supply stability.}, language = {en} } @article{AyalonAvisarJechowetal.2024, author = {Ayalon, Inbal and Avisar, Dror and Jechow, Andreas and Levy, Oren}, title = {Corals nitrogen and carbon isotopic signatures alters under Artificial Light at Night (ALAN)}, series = {The Science of The Total Environment}, journal = {The Science of The Total Environment}, number = {920}, publisher = {Elsevier}, doi = {10.1016/j.scitotenv.2024.170513}, year = {2024}, abstract = {This study examines the impact of Artificial Light at Night (ALAN) on two coral species, Acropora eurystoma and Pocillopora damicornis, in the Gulf of Aqaba/Eilat Red Sea, assessing their natural isotopic responses to highlight changes in energy and nutrient sourcing due to sensory light pollution. Our findings indicate significant disturbances in photosynthetic processes in Acropora eurystoma, as evidenced by shifts in δ13C values under ALAN, pointing to alterations in carbon distribution or utilization. In Pocillopora damicornis, similar trends were observed, with changes in δ13C and δ15N values suggesting a disruption in its nitrogen cycle and feeding strategies. The study also uncovers species-specific variations in heterotrophic feeding, a crucial factor in coral resilience under environmental stress, contributing to the corals' fixed carbon budget. Light measurements across the Gulf demonstrated a gradient of light pollution which possess the potential of affecting marine biology in the region. ALAN was found to disrupt natural diurnal tentacle behaviors in both coral species, crucial for prey capture and nutrient acquisition, thereby impacting their isotopic composition and health. Echoing previous research, our study underscores the need to consider each species' ecological and physiological contexts when assessing the impacts of anthropogenic changes. The findings offer important insights into the complexities of marine ecosystems under environmental stress and highlight the urgency of developing effective mitigation strategies.}, language = {en} } @article{MalekiMohammadi2023, author = {Maleki, Maniya and Mohammadi, Mahdieh}, title = {Velocity and pressure functions of an oscillating flow in a circular Hele-Shaw cell}, series = {Iranian Journal of Physics Research}, volume = {22}, journal = {Iranian Journal of Physics Research}, number = {1}, publisher = {Physics Society of Iran}, doi = {10.47176/ijpr.22.1.81304}, pages = {113 -- 120}, year = {2023}, abstract = {In this study, we have investigated the form of velocity and pressure functions of a fluid oscillating between two parallel glass sheets that form a circular Hele-Shaw cell. The flow has been considered to be radial, incompressible and laminar. The time-dependent Navier-Stokes equation has been solved in cylindrical coordinates using Fourier transform, and the oscillating flow velocity across the thickness of the cell has been obtained at different times. The flow velocity function in the unsteady state is related to the vertical component of the coordinates in the form of parabolic functions and also to the inverse of the radial component. The time dependence appears as a simple harmonic with a frequency equal to the oscillation frequency. The velocity of the flow is maximum at the middle of the cell along its height and gradually decreases from the middle towards the top or bottom plane and reaches zero. Pressure does not depend on the height and changes logarithmically with the radius. The dependence of pressure on time is also a simple harmonic with the external frequency, but it has a phase shift with respect to the velocity.}, language = {en} } @article{TrittelPuzyrevStannarius2024, author = {Trittel, Torsten and Puzyrev, Dmitry and Stannarius, Ralf}, title = {Platonic solids bouncing on a vibrating plate}, series = {Physical Review E}, volume = {109}, journal = {Physical Review E}, number = {3}, publisher = {American Physical Society}, doi = {10.1103/PhysRevE.109.034903}, year = {2024}, abstract = {The energy transfer between bouncing particles and rigid boundaries during impacts is crucially influenced not only by restitution coefficients of the material but also by particle shapes. This is particularly important when such particles are mechanically agitated with vibrating plates. Inertial measurement units are able to measure all acceleration and rotational velocity components of an object and store these data for subsequent analysis. We employ them to measure the dynamics of cubes and icosahedra on vibrating plates to study the efficiency of energy transfer into the individual degrees of freedom (DOFs) of the excited object. The rotational DOFs turn out to be much less excited than the vertical translational motion. Most remarkably, there is only little difference between the two Platonic solids in both the absolute energies and the energy partition ratios.}, language = {en} } @article{LachowskiHammermeisterHalenzetal.2023, author = {Lachowski, Krzysztof and Hammermeister, Florian and Halenz, Bastian and Lieckefett, Florian and G{\"o}tze, Thomas and Prill, Robert and Becker, Roland}, title = {The Patellostabilometer: A New Device for Quantification of Mediolateral Patella Displacement}, series = {Sensors}, journal = {Sensors}, number = {23 (3)}, publisher = {MDPI}, doi = {https://doi.org/10.3390/s23031274}, year = {2023}, abstract = {Mediolateral patella displacement is of interest for diagnostics and clinically relevant research questions. Apart from manual testing, no standardized method is currently available. Proper quantification of patella mobility is necessary to better understand pathologies at the patellofemoral joint. Patella mobility was assessed in 25 healthy individuals using a Patellostabilometer, a new prototype instrument for quantification of the mediolateral patella displacement. The participants underwent measurements of the mediolateral displacement three times using the Patellostabilome- ter. A maximal force of 10 N was applied for patella movement. Additionally, leg length and circumference of the knee, upper- and lower-leg were measured. Lateral patella displacement of 18.27 ± 3.76 mm (range 15.85-20.64 mm, interquartile range (IQR) of 4.79) was measured. The medial patella displacement showed 24.47 ± 6.59 mm (range 19.29-29.76 mm, IQR of 10.47). The test-retest measurement error was 2.32 ± 1.76 mm (IQR of 2.38 mm), with five outliers. There was greater test-retest variability between the measurements of the medial displacement compared to the lateral one. The test-retest variability reached 7\% of the patella displacement. Other parameters provided no significant correlations. Based on the natural patellofemoral mobility, a precise and clinically relevant quantification of patella mobility is allowed.}, language = {en} } @article{RizunRevinaEdelmann2023, author = {Rizun, Nina and Revina, Aleksandra and Edelmann, Noella}, title = {Application of Text Analytics in Public Service Co-Creation: Literature Review and Research Framework}, series = {DG.O 2023: The 24th Annual International Conference on Digital Government Research}, journal = {DG.O 2023: The 24th Annual International Conference on Digital Government Research}, publisher = {Association for Computing Machinery}, doi = {10.1145/3598469.3598471}, pages = {12 -- 22}, year = {2023}, abstract = {The public sector faces several challenges, such as a number of external and internal demands for change, citizens' dissatisfaction and frustration with public sector organizations, that need to be addressed. An alternative to the traditional top-down development of public services is co-creation of public services. Co-creation promotes collaboration between stakeholders with the aim to create better public services and achieve public values. At the same time, data analytics has been fuelled by the availability of immense amounts of textual data. Whilst both co-creation and TA have been used in the private sector, we study existing works on the application of Text Analytics (TA) techniques on text data to support public service co-creation. We systematically review 75 of the 979 papers that focus directly or indirectly on the application of TA in the context of public service development. In our review, we analyze the TA techniques, the public service they support, public value outcomes, and the co-creation phase they are used in. Our findings indicate that the TA implementation for co-creation is still in its early stages and thus still limited. Our research framework promotes the concept and stimulates the strengthening of the role of Text Analytics techniques to support public sector organisations and their use of co-creation process. From policy-makers' and public administration managers' standpoints, our findings and the proposed research framework can be used as a guideline in developing a strategy for the designing co-created and user-centred public services.}, language = {en} } @article{StannariusHarth2023, author = {Stannarius, Ralf and Harth, Kirsten}, title = {The structure of disintegrating defect clusters in smectic C freely suspended films}, series = {Soft Matter}, journal = {Soft Matter}, number = {19}, publisher = {Royal Society of Chemistry}, doi = {https://doi.org/10.1039/d3sm00808h}, pages = {6109 -- 6115}, year = {2023}, abstract = {Disclinations or disclination clusters in smectic C freely suspended films with topological charges larger than one are unstable. They disintegrate, preferably in a spatially symmetric fashion, into single defects with individual charges of +1, which is the smallest positive topological charge allowed in polar vector fields. While the opposite process of defect annihilation is well-defined by the initial defect positions, disintegration starts from a singular state and the following scenario including the emerging regular defect patterns must be selected by specific mechanisms. We analyze experimental data and compare them with a simple model where the defect clusters adiabatically pass quasi-equilibrium solutions in one-constant approximation. It is found that the defects arrange in geometrical patterns that correspond very closely to superimposed singular defect solutions, without additional director distortions. The patterns expand by affine transformations where all distances between individual defects scale with the same time-dependent scaling factor proportional to the square-root of time.}, language = {en} } @article{KloppTrittelHarthetal.2023, author = {Klopp, Christoph and Trittel, Torsten and Harth, Kirsten and Stannarius, Ralf}, title = {Coalescence of biphasic droplets embedded in free standing smectic A films}, series = {Soft Matter}, volume = {20}, journal = {Soft Matter}, number = {5}, publisher = {Royal Society of Chemistry}, issn = {1744-683X}, doi = {10.1039/d3sm01549a}, pages = {1036 -- 1046}, year = {2023}, abstract = {We investigate micrometer-sized flat droplets consisting of an isotropic core surrounded by a nematic rim in freely suspended smectic A liquid-crystal films. In contrast to purely isotropic droplets which are characterized by a sharp edge and no long-range interactions, the nematic fringe introduces a continuous film thickness change resulting in long-range mutual attraction of droplets. The coalescence scenario is divided in two phases. The first one consists in the fusion of the nematic regions. The second phase involves the dissolution of a thin nematic film between the two isotropic cores. The latter has many similarities with the rupture of thin liquid films between droplets coalescing in an immiscible viscous liquid. Coalescence of biphasic droplets in free-standing smectic films is controlled in part by the rupture of a thin nematic membrane separating the isotropic droplet cores.}, language = {en} } @article{KuznetsovFroripSuenteretal.2023, author = {Kuznetsov, Arthur and Frorip, Aleksandr and S{\"u}nter, Alar and Kasvand, Nensi and Korsakov, Vadim and Konoplev, Georgii and Stepanova, Oksana and Rusalepp, Linda and Anton, Dea and P{\"u}ssa, T{\~o}nu and Roasto, Mati and Abramova, Liubov and Kozin, Andrey and Toom, Lauri and Hirsch, S{\"o}ren and Mukhin, Nikolay}, title = {Fast Protein and Metabolites (Nucleotides and Nucleosides) Liquid Chromatography Technique and Chemical Sensor for the Assessment of Fish and Meat Freshness}, series = {Chemosensors}, journal = {Chemosensors}, number = {1/2023 / Band 11}, editor = {mdpi,}, publisher = {MDPI}, issn = {2227-9040}, doi = {10.3390/chemosensors11010069}, pages = {69}, year = {2023}, abstract = {Fast protein and metabolite liquid chromatography (FPLMC) was introduced years ago to enable the easy separation of high-molecular compounds such as proteins from small molecules and the identification of the low-molecular substances. In this paper, the method is applied for the rapid evaluation of freshness and monitoring the aging of animal meat and fish. A novel chromatographic sensor was developed with a deep UV LED-based photometric detection unit (255-265 nm), an original flow cuvette and registration scheme; the processing of a chromatogram with the sensor takes approximately 15 min. Strict isochronism between the elution of ATP metabolites, mainly hypoxanthine (Hx) and inosine monophosphate (IMP), and the time of maturation of meat or fish, was discovered. A new freshness index H* = [Hx]/[IMP] was introduced, which is proportional to the instrumental delay time in the FPMLC chromatograms: the H* index < 0.5 indicates the presence of inosine monophosphate (IMP) and the high quality of the meat or fish. Reasonably strong correlations were revealed between data obtained by FPMLC and total volatile basic nitrogen TVB-N (for fish) or volatile fatty acids VFA (for meat) content. Moreover, putative nucleotide salvage and an increase in the concentration of IMP were observed in fish after heat treatment using the FPMLC sensor and NMR technique.}, language = {en} } @article{ChaurasiaGoeckeDe2022, author = {Chaurasia, Prashtan Kumar and Goecke, Sven-Frithjof and De, Amitava}, title = {Real-time monitoring of temperature field, metal transfer and cooling rate during gas metal arc-directed energy deposition}, series = {Science and Technology of Welding and Joining}, journal = {Science and Technology of Welding and Joining}, number = {27}, publisher = {Taylor \& Francis}, issn = {13621718}, doi = {10.1080/13621718.2022.2080447}, pages = {512 -- 521}, year = {2022}, language = {en} } @article{TumarkinTyurninaMukhinetal.2022, author = {Tumarkin, Andrey and Tyurnina, Natalya and Mukhin, Nikolay and Tyurnina, Zoya and Sinelshchikova, Olga and Gagarin, Alexander and Sapego, Eugeny and Kretser, Yriy}, title = {Glass-ceramic ferroelectric composite material BaTiO3/KFeSi for microwave applications}, series = {Composite Structures}, volume = {281}, journal = {Composite Structures}, publisher = {Elsevier}, issn = {0263-8223}, pages = {1 -- 10}, year = {2022}, abstract = {Glass-ceramic composites consisting of potassium-iron-silicate glass and barium titanate mixed in various proportions were successfully synthesized by low-temperature sintering. The crystal structure of the obtained composite samples, the porosity and the microhardness were studied by the X-ray diffraction, the electron microscopy, the weight method, and the Vickers method. Electrical characteristics (dielectric permittivity, tunability and losses) of as-prepared and annealed in oxygen medium samples were investigated at microwaves. According to structural analysis, the synthesized samples are a mixture of KFeSi glass, ferroelectric BaTiO3, and dielectric barium polytitanates; the ratio of the latter determines the electrical properties of the composites. Depending on the content of barium titanate, the studied composite samples show a permittivity from 50 to 270 with a dielectric loss level of 0,1-0,02 in frequency range from 3 to 10 GHz. Annealing of composite samples in an oxygen-containing environment leads to an increase in their dielectric permittivity and tunability by 10-25\% and a twofold decrease in dielectric loss.}, language = {en} } @article{FachetWitteFlassigetal.2020, author = {Fachet, Melanie and Witte, Carina and Flassig, Robert J. and Rihko-Struckmann, Liisa K. and McKie-Krisberg, Zaid and Polle, J{\"u}rgen E. W. and Sundmacher, Kai}, title = {Reconstruction and analysis of a carbon-core metabolic network for Dunaliella salina}, series = {BMC Bioinformatics}, volume = {21}, journal = {BMC Bioinformatics}, number = {1}, publisher = {BioMed Central}, doi = {10.1186/s12859-019-3325-0}, year = {2020}, language = {en} } @article{GieslerPeschWeirauchetal.2020, author = {Giesler, Jasper and Pesch, Georg R. and Weirauch, Laura and Schmidt, Marc-Peter and Th{\"o}ming, Jorg and Baune, Michae}, title = {Polarizability-Dependent Sorting of Microparticles Using Continuous-Flow Dielectrophoretic Chromatography with a Frequency Modulation Method}, series = {Micromachines}, volume = {11}, journal = {Micromachines}, number = {1}, publisher = {MDPI}, doi = {10.3390/mi11010038}, pages = {38}, year = {2020}, language = {en} } @article{VollmerMoellmann2020, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Unsichtbares sichtbar gemacht: Infrarotkameras f{\"u}r Smartphones}, series = {Physik in unserer Zeit}, volume = {51}, journal = {Physik in unserer Zeit}, number = {1}, publisher = {Wiley-VCH}, doi = {https://doi.org/10.1002/piuz.201901551}, pages = {29 -- 35}, year = {2020}, language = {de} } @article{MoellmannRegehlyVollmer2020, author = {M{\"o}llmann, Klaus-Peter and Regehly, Martin and Vollmer, Michael}, title = {Spectroscopy and microscopy analysis of semiconductor lasers in student laboratories}, series = {European Journal of Physics}, volume = {41}, journal = {European Journal of Physics}, number = {2}, publisher = {Institute of Physics Publishing (IOP); European Physical Society}, doi = {10.1088/1361-6404/ab5075}, pages = {025302}, year = {2020}, language = {en} } @article{VollmerMoellmann2020, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Wenn Licht die Biege macht}, series = {Physik in unserer Zeit}, volume = {51}, journal = {Physik in unserer Zeit}, number = {1}, publisher = {Wiley-VCH}, doi = {https://doi.org/10.1002/piuz.202001569}, pages = {46 -- 47}, year = {2020}, language = {de} } @article{LuebckeBraenzelDehlingeretal.2019, author = {L{\"u}bcke, Andrea and Braenzel, Julia and Dehlinger, Aurelie and Schn{\"u}rer, Matthias and Stiel, Holger and Guttmann, Peter and Rehbein, Stefan and Schneider, Gerd and Werner, Stephan and Kemmler, Roman and Ritter, Sebastian and Raugust, Marc and Wende, Torsten and Behrendt, Marcel and Regehly, Martin}, title = {Soft X-ray nanoscale imaging using a sub-pixel resolution charge coupled device (CCD) camera}, series = {Review of Scientific Instruments}, volume = {90}, journal = {Review of Scientific Instruments}, number = {4}, publisher = {American Institute of Physics}, doi = {10.1063/1.5053593}, year = {2019}, language = {en} } @article{FlassigMangoldWoelfer2019, author = {Flassig, Robert J. and Mangold, Michael and W{\"o}lfer, Christian}, title = {Towards Design of Self-Organizing Biomimetic Systems}, series = {Advanced Biosystems}, volume = {3}, journal = {Advanced Biosystems}, number = {6}, publisher = {Wiley Vch}, issn = {2366-7478}, doi = {/10.1002/adbi.201800320}, pages = {1800320}, year = {2019}, language = {en} } @article{GoeckeMakwanaShomeetal.2019, author = {Goecke, Sven-Frithjof and Makwana, Pinaac and Shome, Mahadev and De, Amitava}, title = {Probing joint strength and distortion in gas metal arc lap joining of aluminum and steel sheets}, series = {Welding in the World}, volume = {63}, journal = {Welding in the World}, number = {2}, publisher = {Springer}, doi = {10.1007/s40194-018-0653-z}, pages = {229 -- 236}, year = {2019}, language = {en} } @article{VollmerShawNugentetal.2019, author = {Vollmer, Michael and Shaw, Joseph A. and Nugent, Paul and Harris, Wilson}, title = {Heiße Quellen im W{\"a}rmebild. Yellowstone-Park im Infraroten}, series = {Physik in unserer Zeit}, volume = {50}, journal = {Physik in unserer Zeit}, number = {5}, publisher = {Wiley-VCH}, doi = {10.1002/piuz.201901539}, pages = {244 -- 250}, year = {2019}, language = {de} } @article{MakwanaGoeckeDe2019, author = {Makwana, Pinaac and Goecke, Sven-Frithjof and De, Amitava}, title = {Real-time heat input monitoring towards robust GMA brazing}, series = {Science and Technology of Welding \& Joining}, volume = {24}, journal = {Science and Technology of Welding \& Joining}, number = {1}, publisher = {Taylor \& Francis}, doi = {10.1080/13621718.2018.1470290}, pages = {1 -- 11}, year = {2019}, language = {en} } @article{VollmerMoellmann2019, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Manche m{\"o}gen's kochend heiß}, series = {Physik in unserer Zeit}, volume = {50}, journal = {Physik in unserer Zeit}, number = {1}, publisher = {Wiley-VCH}, doi = {10.1002/piuz.201901533}, pages = {46 -- 47}, year = {2019}, language = {de} } @article{VollmerMoellmann2019, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Alles kalter Kaffee? Rasante Physik}, series = {Physik in unserer Zeit}, volume = {50}, journal = {Physik in unserer Zeit}, number = {5}, publisher = {Wiley-VCH}, doi = {10.1002/piuz.201901553}, pages = {252 -- 253}, year = {2019}, language = {de} } @article{VollmerMoellmann2019, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Das langsame Verdunsten von Wasser}, series = {Physik in unserer Zeit}, volume = {50}, journal = {Physik in unserer Zeit}, number = {2}, publisher = {Wiley-VCH}, doi = {10.1002/piuz.201901541}, pages = {97 -- 98}, year = {2019}, language = {de} } @article{MikhailovLamkinDegterevetal.2023, author = {Mikhailov, Ivan Igorevich and Lamkin, I. A. and Degterev, Aleksandr and Degtereva, Mariya and Pavlova, Marina and Kurachkina, Marharyta and Tarasov, S. A. and Kuzmina, Ulyana}, title = {Фоточувствительные структуры с каскадными концентраторами излучения на основе коллоидных квантовых точек халькогенидов металлов}, series = {Journal of the Russian Universities Radioelectronics}, volume = {26}, journal = {Journal of the Russian Universities Radioelectronics}, number = {2}, publisher = {Saint Petersburg Electrotechnical University}, issn = {2658-4794}, doi = {10.32603/1993-8985-2023-26-2-78-88}, pages = {78 -- 88}, year = {2023}, abstract = {The problem of increasing the efficiency of existing photodetectors and creating their new types attracts much research attention. Among new photodetector types are photosensitive structures based on cascade concentrators, whose operational principle involves the absorption of optical radiation followed by its reemission at a longer wavelength and radiation concentration onto a highly efficient small-area photodetector. The absorption and re-emission spectra of each cascade layer depend on the characteristics of the material used. Сolloidal quantum dots are among the most promising materials for cascade layers due to their manufacturing technology, which provides for accurate control over the photoluminescence maximum position. It seems highly relevant to develop and to study photosensitive structures with cascade concentrators of various shapes based on CdS, CdSe/ZnS, and PbS colloidal quantum dots. Aim . To develop photosensitive structures with a wide-range sensitivity spectrum based on concentrators containing arrays of metal chalcogenide CQDs and to study their characteristics. Materials and methods . Cascade photosensitive structures were manufactured based on layers made of polymethyl methacrylate and layers of colloidal quantum dots embedded in a polystyrene matrix. Results . Three-layer concentrators were manufactured with different colloidal quantum dots in each concentrator layers. A 22 \% increase in the output power was observed for a three-layer cascade structure based on different cascade layer materials compared to a similar structure using a single layer concentrator. Conclusion . The conducted studies showed an increase in the efficiency of photosensitive structures with a cascade concentrator based on colloidal quantum dots of various types (CdS, CdSe/ZnS, and PbS) in the cascade layers.}, language = {ru} } @article{WangHarthPuzyrevetal.2022, author = {Wang, Jing and Harth, Kirsten and Puzyrev, Dmitry and Stannarius, Ralf}, title = {The effect of obstacles near a silo outlet on the discharge of soft spheres}, series = {New Journal of Physics}, volume = {24}, journal = {New Journal of Physics}, publisher = {IOP}, doi = {10.1088/1367-2630/ac8bea}, year = {2022}, language = {en} } @article{RegehlyHecht2022, author = {Regehly, Martin and Hecht, Stefan}, title = {Auf dem Weg zum Replikator}, series = {Physik in unserer Zeit}, volume = {53}, journal = {Physik in unserer Zeit}, number = {3}, publisher = {Wiley-VCH GmbH}, issn = {1521-3943}, doi = {10.1002/piuz.202201637}, pages = {125 -- 131}, year = {2022}, language = {de} }