@article{BehbehaniSteffens2021, author = {Behbehani, Sami and Steffens, Jochen}, title = {Musical DIAMONDS: The influence of situational classes and characteristics on music listening behavior}, series = {Psychology of Music}, volume = {49}, journal = {Psychology of Music}, number = {6}, publisher = {sage journals}, issn = {1741-3087}, doi = {10.1177/0305735620968910}, pages = {1532 -- 1545}, year = {2021}, language = {en} } @article{AckermannBrinkmannWeinzierl2024, author = {Ackermann, David and Brinkmann, Fabian and Weinzierl, Stefan}, title = {Musical instruments as dynamic sound sources}, series = {Journal of the Acoustical Society of America}, volume = {155}, journal = {Journal of the Acoustical Society of America}, publisher = {Acoustical Society of America}, issn = {1520‑8524}, doi = {10.1121/10.0025463}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-58972}, pages = {2302 -- 2313}, year = {2024}, abstract = {Unlike electro-acoustic sound sources, musical instruments have a time-varying, dynamic directivity, due to the note-dependent radiation behavior of the instrument and due to the expressive movements that musicians perform with their instrument. While previous studies have generally examined the directivity of the static, unmoved instrument for specific notes played, we show the individual and combined contributions of these two factors to a temporal modulation of the radiation behavior, based on motion tracking of typical movement patterns for all instruments of a classical symphony orchestra and on the directivity measured for all partials over the entire pitch range of these instruments. The effect of this modulation, which is manifested by changes in timbre and room acoustic excitation, was determined by spectral variations in the free field and under reverberant conditions, as well as by a modulation of room acoustic parameters. Our results show that these effects are well above the just noticeable differences for all musical instruments and all perceptual variables considered. While the effect of motion dominates for brass instruments, string and woodwind instruments exhibit large note-related differences, which should be taken into account in virtual acoustic realities if an auditory liveliness comparable to physical reality is to be achieved.}, language = {en} } @article{AngladaTortSteffensMuellensiefen2019, author = {Anglada-Tort, Manuel and Steffens, Jochen and M{\"u}llensiefen, Daniel}, title = {Names and titles matter: The impact of linguistic fluency and the affect heuristic on aesthetic and value judgements of music}, series = {Psychology of Aesthetics, Creativity, and the Arts}, volume = {13}, journal = {Psychology of Aesthetics, Creativity, and the Arts}, number = {3}, publisher = {APA}, doi = {10.1037/aca0000172}, pages = {277 -- 292}, year = {2019}, language = {en} } @inproceedings{GeigerPaelkeGansen2006, author = {Geiger, Christian and Paelke, Volker and Gansen, Ivonne}, title = {Navigating by Following Stories}, series = {Technologies for Interactive Digital Storytelling and Entertainment, Third International Conference, TIDSE 2006, Darmstadt, Germany, December 4-6, 2006, Proceedings}, booktitle = {Technologies for Interactive Digital Storytelling and Entertainment, Third International Conference, TIDSE 2006, Darmstadt, Germany, December 4-6, 2006, Proceedings}, editor = {Hutchison, David and Kanade, Takeo and Kittler, Josef and Kleinberg, Jon M. and Mattern, Friedemann and Mitchell, John C. and Naor, Moni and Nierstrasz, Oscar and Pandu Rangan, C. and Steffen, Bernhard and Sudan, Madhu and Terzopoulos, Demetri and Tygar, Dough and Vardi, Moshe Y. and Weikum, Gerhard and G{\"o}bel, Stefan and Malkewitz, Rainer and Iurgel, Ido}, publisher = {Springer}, address = {Berlin, Heidelberg}, isbn = {978-3-540-49934-3}, doi = {10.1007/11944577_32}, pages = {324 -- 333}, year = {2006}, language = {en} } @misc{SpindlerMadjlessiRoudi2025, author = {Spindler, Susanne and Madjlessi-Roudi, Sara}, title = {Navigating Repression: Social Space-oriented Social Work with Immigrants during the first Trump Era}, series = {sozialraum.de}, journal = {sozialraum.de}, number = {1}, editor = {Deinet, Ulrich}, publisher = {socialnet}, issn = {1868-2596}, year = {2025}, subject = {Migrationspolitik}, language = {en} } @inproceedings{Musall2011, author = {Musall, Eike}, title = {Near zero energy home, Net zero energy house, Plus energy building-How is it understood and how is it implemented?}, series = {Danfoss Heating Solutions' Technology Management Event, Billund}, booktitle = {Danfoss Heating Solutions' Technology Management Event, Billund}, address = {Billund}, year = {2011}, language = {en} } @incollection{VossMusallSartorietal.2013, author = {Voss, Karsten and Musall, Eike and Sartori, Igor and Lollini, Roberto}, title = {Nearly Zero, Net Zero, and Plus Energy Buildings - Theory, Terminology, Tools, and Examples}, series = {Transition to renewable energy systems}, booktitle = {Transition to renewable energy systems}, editor = {Stolten, Detlef and Scherer, Viktor}, publisher = {Wiley}, address = {Weinheim}, isbn = {978-3-527-33239-7}, doi = {10.1002/9783527673872.ch41}, pages = {875 -- 889}, year = {2013}, language = {en} } @article{AtacSchwiertzJorgensenetal.2023, author = {Ata{\c{c}}, Ilker and Schwiertz, Helge and J{\o}rgensen, Martin Bak and Vandevoordt, Robin and Hinger, Sophie and Spindler, Susanne}, title = {Negotiating Borders through a Politics of Scale: Municipalities and Urban Civil Society Initiatives in the Contested Field of Migration}, series = {Geopolitics}, volume = {29}, journal = {Geopolitics}, number = {2}, publisher = {Informa}, issn = {1465-0045}, doi = {10.1080/14650045.2022.2129732}, pages = {714 -- 740}, year = {2023}, subject = {Migration}, language = {en} } @incollection{Mueller2020, author = {M{\"u}ller, Regine}, title = {Negotiating with social problems. Professionalism in combatting child poverty in Germany}, series = {Social glocalisation and education. social work, health sciences and practical theology perspectives on change}, booktitle = {Social glocalisation and education. social work, health sciences and practical theology perspectives on change}, editor = {Hobelsberger, Hans}, publisher = {Verlag Barbara Budrich}, address = {Leverkusen}, isbn = {978-3-8474-1512-1}, pages = {279 -- 286}, year = {2020}, language = {en} } @incollection{AeleneiMusall2017, author = {Aelenei, Laura and Musall, Eike}, title = {Net ZEB case study buildings, measures and solution sets}, series = {Solution sets for net zero energy buildings}, booktitle = {Solution sets for net zero energy buildings}, editor = {Gardes, Fran{\c{c}}ois and Ayoub, Josef and Aelenei, Daniel and Aelenei, Laura and Scognamiglio, Alessandra}, publisher = {Ernst \& Sohn}, address = {Berlin}, isbn = {9783433604663}, doi = {10.1002/9783433604663.ch3}, pages = {39 -- 102}, year = {2017}, language = {en} } @incollection{AeleneiMusall2017, author = {Aelenei, Laura and Musall, Eike}, title = {Net zero energy building design fundamentals}, series = {Solution sets for net zero energy buildings}, booktitle = {Solution sets for net zero energy buildings}, editor = {Gardes, Fran{\c{c}}ois and Ayoub, Josef and Aelenei, Daniel and Aelenei, Laura and Scognamiglio, Alessandra}, publisher = {Ernst \& Sohn}, address = {Berlin}, isbn = {9783433604663}, doi = {10.1002/9783433604663.ch2}, pages = {7 -- 38}, year = {2017}, language = {en} } @inproceedings{MarszalBourelleMusalletal.2010, author = {Marszal, Anna Joanna and Bourelle, Julien S. and Musall, Eike and Heiselberg, Per and Gustavsen, Arild and Voss, Karsten}, title = {Net Zero Energy Buildings - Calculation Methodologies versus National Building Codes}, series = {EuroSun Conference 2010, Graz, 28.9-30.9.2010}, booktitle = {EuroSun Conference 2010, Graz, 28.9-30.9.2010}, address = {Graz}, year = {2010}, abstract = {The international cooperation project IEA SHC Task 40 / ECBCS Annex 52 "Towards Net Zero Energy Solar Buildings", attempts to develop a common understanding and to set up the basis for an international definition framework of Net Zero Energy Buildings (Net ZEBs). Th e understanding of such buildings and how the Net ZEB status should be calculated differs in most countries. This paper presents an overview of Net ZEBs energy calculation methodologies proposed by organisations representing eight different countries: Austria, Canada, Denmark, Germany, Italy, Norway, Switzerland and the USA. The different parameters used in the calculations are discussed and the various renewable supply options considered in the methodologies are summarised graphically. Thus, the paper helps to understand different existing approaches to calculate energy balance in Net ZEBs, highlights the importance of variables selection and identify possible renewable energy supply options which may be considered in calculations. Finally, the gap between the methodology proposed by each organisation and their respective national building code is assessed; providing an overview of the possible changes building codes will need to undergo in the coming years.}, language = {en} } @inproceedings{Musall2012, author = {Musall, Eike}, title = {Net Zero Energy Buildings - Definition and building concepts}, series = {Net Zero-Energy Buildings Conference, Lissabon}, booktitle = {Net Zero-Energy Buildings Conference, Lissabon}, address = {Lissabon}, year = {2012}, language = {en} } @misc{OPUS4-2014, title = {Net Zero Energy Buildings: International Projects of Carbon Neutrality in Buildings}, volume = {Detail green books}, editor = {Voss, Karsten and Musall, Eike}, publisher = {De Gruyter}, address = {Berlin}, isbn = {3920034805}, year = {2013}, language = {en} } @inproceedings{MusallWeissVossetal.2010, author = {Musall, Eike and Weiß, Tobias and Voss, Karsten and Lenoir, Aur{\´e}lie and Donn, Michael and Cory, Shaan and Garde, Fran{\c{c}}ois}, title = {Net Zero Energy Solar Buildings: An Overview and Analysis on worldwide Building Projects. EuroSun Conference 2010}, address = {Graz}, organization = {EuroSun Conference 2010}, year = {2010}, abstract = {This paper summarises the state of two research phases within the scope of the IEA Task 40 / Annex 52 "Towards Net Zero Energy Solar Buildings" [1]. The first objective is a cross section analysis of a comprehensive collection of more than 280 international zero energy buildings. The aim is to show trends, motives of actors, as well as their method to reach the zero energy balance. Secondly, an in-depth study shows a rough analysis and characteristics of 50 exemplary Nets ZEBs from different countries and climate regions, as well as their combinations of measures concerning energy efficiency and renewable energy supply. It is shown that diverse actors with miscellaneous motives have lead to a lot of different building variations. Typical strategies can be assigned to the typology groups "small residential building", "apartment building" and "non residential building". Net ZEBs are much more energy efficient than average buildings which were built according to national construction and energy regulations. None of the leading Net ZEB examples exist without generation of PV electricity. Trends give an outlook of current and possible future combinations of technologies and passive measures for the realization of (future) net zero energy buildings.}, language = {en} } @article{BernhardtLeeser2017, author = {Bernhardt, Anne-Julchen and Leeser, J{\"o}rg}, title = {NEUBAU: Flexible Self-Build Cities in Germany}, series = {Architectural Design}, volume = {87}, journal = {Architectural Design}, number = {5}, publisher = {Wiley}, doi = {10.1002/ad.2213}, pages = {30 -- 37}, year = {2017}, language = {en} } @article{ZellnerHerrmannWiesenetal.2016, author = {Zellner, R. and Herrmann, H. and Wiesen, P. and Nehr, Sascha}, title = {New and Emerging Technologies of Societal Relevance: Impact on Air Quality and Climate}, series = {Chemie Ingenieur Technik}, volume = {88}, journal = {Chemie Ingenieur Technik}, number = {9}, publisher = {Wiley}, issn = {0009-286X}, doi = {10.1002/cite.201650083}, pages = {1257 -- 1258}, year = {2016}, language = {en} } @phdthesis{Eilert2013, author = {Eilert, Eva}, title = {New applications of heterologous gene expression in Hansenula polymorpha for protein and metabolite production}, publisher = {Institut f{\"u}r Molekulare Mykologie, Institut f{\"u}r Mikrobiologie}, address = {D{\"u}sseldorf}, organization = {Institut f{\"u}r Molekulare Mykologie, Institut f{\"u}r Mikrobiologie}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:061-20130527-092604-7}, year = {2013}, abstract = {The methylotrophic yeast Hansenula polymorpha has been established as a highly efficient expression system. Strong promoters derived from the methanol metabolism pathway and mitotically stable high-copy integration have made this organism very effective for heterologous protein expression. To improve the processing of secretory proteins targeted by the MFα prepro sequence, variations in the amino acid composition near the processing site of Kex2p were investigated (Manuscript I). The insertion of Ala-Pro between MFα prepro sequence and protein of interest leads to an improved processing of the signal sequence in case of interleukin-6 (IL-6) and interferon-α 2a (IFNα-2a). Modeling of the transition sequences confirmed a better exposition of the Kex2p-cleavage site in dependency of Ala-Pro insertions. Analysis of the secreted proteins revealed activity of an Ala-Pro specific endoprotease. Partial removal of the N-terminal Ala-Pro dipeptide was also detected during IFNα-2a processing. The putative protease responsible for the processing of Ala-Pro dipeptides was identified by gene deletion. Significant similarities with Saccharomyces cerevisiae Ste13p were identified. To generally improve productivity in the H. polymorpha system new fusion protein strategies were investigated (Manuscript II). The recombinantly strongly expressed cytosolic ferritin heavy chain (FTH1) was analyzed with regard to its potential as fusion partner for difficult-to-express target proteins. A fragment of the parathyroid hormone (PTH) was chosen to explore whether fusion to FTH1 enhances PTH stability. We could show that the expression level of this fusion protein was at least of the magnitude of that of FTH1 without fusion partner. The solubility of the fusion protein was increased in comparison to FTH1 alone and no degradation of PTH occurred when fused C-terminally to FTH1. Ectoine and 5-hydroxyectoine belong to the family of compatible solutes which are known to contribute to the adaptation of the cell to osmotic stress by mediation of a constant turgor. H. polymorpha was engineered to express the enzymes of the H. elongata 5-hydroxyectoine biosynthesis pathway (Manuscript III). Expression of the enzymes EctB, EctA, EctC and EctD in H. polymorpha resulted in production of 5-hydroxyectoine in gram per liter scale with almost full conversion of ectoine to 5-hydroxyectoine. We showed that 5-hydroxyectoine synthesis was influenced by feeding of methanol during cultivation. Furthermore, 5-hydroxyectoine synthesis was downregulated by the addition of methionine, lysine or threonine indicating the existence of a feedback regulated aspartate kinase in H. polymorpha.}, language = {en} } @article{NehrFranzenReuterKucejko2017, author = {Nehr, Sascha and Franzen-Reuter, Isabelle and Kucejko, Catharina}, title = {New directions: Future approaches to the standardized assessment of airborne pollutants affecting environmental quality}, series = {Atmospheric Environment}, volume = {166}, journal = {Atmospheric Environment}, publisher = {Elsevier}, issn = {1352-2310}, doi = {10.1016/j.atmosenv.2017.06.051}, pages = {570 -- 572}, year = {2017}, language = {en} } @inproceedings{SteffensSteeleGuastavino2015, author = {Steffens, Jochen and Steele, Daniel and Guastavino, Catherine}, title = {New Insights into Soundscape Evaluations Using the Experience Sampling Method}, series = {Proceedings of Euronoise 2015, 31 May - 3 June, Maastricht}, booktitle = {Proceedings of Euronoise 2015, 31 May - 3 June, Maastricht}, address = {Maastricht}, pages = {1495 -- 1500}, year = {2015}, language = {en} } @inproceedings{HuldtgrenKlapperichEndter2022, author = {Huldtgren, Alina and Klapperich, Holger and Endter, Cordula}, title = {Next Steps for User Integration in ICT for Aging Well}, series = {Proceedings of the 8th International Conference on Information and Communication Technologies for Ageing Well and e-Health April 23-25, 2022}, booktitle = {Proceedings of the 8th International Conference on Information and Communication Technologies for Ageing Well and e-Health April 23-25, 2022}, editor = {Ziefle, Martina and Mulvenna, Maurice and Maciaszek, Leszek}, publisher = {SciTePress}, isbn = {978-989-758-566-1}, issn = {2184-4984}, doi = {10.5220/0011072700003188}, pages = {291 -- 298}, year = {2022}, language = {en} } @article{GuoRuess2015, author = {Guo, Yujie and Ruess, Martin}, title = {Nitsche's method for a coupling of isogeometric thin shells and blended shell structures}, series = {Computer Methods in Applied Mechanics and Engineering}, volume = {284}, journal = {Computer Methods in Applied Mechanics and Engineering}, publisher = {Elsevier}, issn = {0045-7825}, doi = {10.1016/j.cma.2014.11.014}, pages = {881 -- 905}, year = {2015}, language = {en} } @inproceedings{SteffensWeinzierl2023, author = {Steffens, Jochen and Weinzierl, Stefan}, title = {Noise for dinner - Towards a comprehensive statistical model of the acoustical and overall quality of restaurants}, series = {Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023, September 11 - 15, 2023,Torino, Italy}, booktitle = {Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023, September 11 - 15, 2023,Torino, Italy}, editor = {Astolfi, Arianna and Asdrubali, Francesco and Shtrepi, Louena}, publisher = {European Acoustics Association}, address = {Turin, Italy}, isbn = {978-88-88942-67-4}, issn = {2221-3767}, doi = {10.61782/fa.2023.0483}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-47908}, pages = {3325 -- 3327}, year = {2023}, abstract = {Studies on noise in restaurants have shown a multitude of potential negative effects, for example related to mood, overall satisfaction, intended revisit, the ability to communicate and the actual behaviour in the room. In this paper, we investigated the complex interplay between room acoustics, soundscape evaluation, non-acoustical aspects of a restaurant visit and overall restaurant quality. Based on acoustical measurements and reports from 142 persons visiting 12 restaurants in Berlin, we propose a structural equation model including both acoustical and non- acoustical factors and yielding a good overall fit. The model, for instance, suggests that the A-weighted sound level negatively impacts the assessment of overall restaurant quality, while the effect of soundscape pleasantness on overall restaurant quality is mediated by the restaurant's perceived atmosphere. Moreover, the reverberation time was found to be effective predominantly through its effect on sound strength, which leads patrons to increasingly raise their speech level to ensure intelligibility. These results thus emphasize the need to design actively the restaurant's acoustical atmosphere beyond pure loudness reduction which involves a specific trade-off between comfort and liveliness, depending on the desired character of the place.}, subject = {European Acoustics Association}, language = {en} } @inproceedings{LaviaWitchelAlettaetal.2018, author = {Lavia, Lisa and Witchel, Harry J. and Aletta, Francesco and Steffens, Jochen and Fiebig, Andr{\´e} and Kang, Jian and Howes, Christine and Healey, Patrick G. T.}, title = {Non-Participant Observation Methods for Soundscape Design and Urban Planning}, series = {Handbook of research on perception-driven approaches to urban assessment and design}, booktitle = {Handbook of research on perception-driven approaches to urban assessment and design}, editor = {Aletta, Francesco and Xiao, Jieling}, publisher = {IGI Global Disseminator of Knowledge}, address = {Hershey, PA}, isbn = {9781522536383}, pages = {73 -- 99}, year = {2018}, language = {en} } @article{YangKollmannsbergerDuesteretal.2011, author = {Yang, Zhengxiong and Kollmannsberger, Stefan and D{\"u}ster, Alexander and Ruess, Martin and Garcia, Eduardo Grande and Burgkart, Rainer and Rank, Ernst}, title = {Non-standard bone simulation: interactive numerical analysis by computational steering}, series = {Computing and Visualization in Science}, volume = {14}, journal = {Computing and Visualization in Science}, number = {5}, publisher = {Springer}, doi = {10.1007/s00791-012-0175-y}, pages = {207 -- 216}, year = {2011}, language = {en} } @article{LiangRuess2016, author = {Liang, Ke and Ruess, Martin}, title = {Nonlinear buckling analysis of the conical and cylindrical shells using the SGL strain based reduced order model and the PHC method}, series = {Aerospace Science and Technology}, volume = {55}, journal = {Aerospace Science and Technology}, publisher = {Elsevier}, issn = {1270-9638}, doi = {10.1016/j.ast.2016.05.018}, pages = {103 -- 110}, year = {2016}, language = {en} } @inproceedings{NabholzCurcicMehneretal.2019, author = {Nabholz, Ulrike and Curcic, Michael and Mehner, Jan E. and Degenfeld-Schonburg, Peter}, title = {Nonlinear Dynamical System Model for Drive Mode Amplitude Instabilities in MEMS Gyroscopes}, series = {2019 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL), Naples, 01-05 April 2019}, booktitle = {2019 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL), Naples, 01-05 April 2019}, publisher = {IEEE}, isbn = {978-1-5386-7828-2}, doi = {10.1109/ISISS.2019.8739703}, year = {2019}, language = {en} } @inproceedings{VersuemerBlaettermannSteffens2025, author = {Vers{\"u}mer, Siegbert and Bl{\"a}ttermann, Patrick and Steffens, Jochen}, title = {Nonlinearities in generalized models based on different soundscape datasets [Abstract]}, series = {DAS|DAGA 2025: 51st Annual Meeting on Acoustics, March 17-20, 2025, Copenhagen}, booktitle = {DAS|DAGA 2025: 51st Annual Meeting on Acoustics, March 17-20, 2025, Copenhagen}, publisher = {Deutsche Gesellschaft f{\"u}r Akustik e.V.}, address = {Berlin}, year = {2025}, subject = {Soundscape}, language = {en} } @inproceedings{Voigt2018, author = {Voigt, Christian}, title = {Not Every Remix is an Innovation}, series = {Proceedings of the 10th ACM Conference on Web Science, 27.05.-30.05.2018, Amsterdam}, booktitle = {Proceedings of the 10th ACM Conference on Web Science, 27.05.-30.05.2018, Amsterdam}, editor = {Akkermans, Hans and Fontaine, Kathy and Vermeulen, Ivar and Houben, Geert-Jan and Weber, Matthew S.}, publisher = {ACM}, address = {New York}, isbn = {9781450355636}, doi = {10.1145/3201064.3201070}, pages = {153 -- 161}, year = {2018}, language = {en} } @article{WolfUlrichBraun2023, author = {Wolf, Dominik Werner and Ulrich, Markus and Braun, Alexander}, title = {Novel developments of refractive power measurement techniques in the automotive world}, series = {Metrologia}, volume = {60}, journal = {Metrologia}, number = {064001}, publisher = {IOP Publishing}, issn = {1681-7575}, doi = {10.1088/1681-7575/acf1a4}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41484}, year = {2023}, abstract = {Refractive power measurements serve as the primary quality standard in the automotive glazing industry. In the light of autonomous driving new optical metrics are becoming more and more popular for specifying optical quality requirements for the windshield. Nevertheless, the link between those quantities and the refractive power needs to be established in order to ensure a holistic requirement profile for the windshield. As a consequence, traceable high-resolution refractive power measurements are still required for the glass quality assessment. Standard measurement systems using Moir{\´e} patterns for refractive power monitoring in the automotive industry are highly resolution limited, wherefore they are insufficient for evaluating the camera window area. Consequently, there is a need for more sophisticated refractive power measurement systems that provide a higher spatial resolution. In addition, a calibration procedure has to be developed in order to guarantee for comparability of the measurement results. For increasing the resolution, a measurement setup based on an auto-correlation algorithm is tested in this paper. Furthermore, a calibration procedure is established by using a single reference lens with a nominal refractive power of 100 km-1. For the calibration of the entire measurement range of the system, the lens is tilted by an inclination angle orthogonal to the optical axis. The effective refractive power is then given by the Kerkhof model. By adopting the measurement and calibration procedure presented in this paper, glass suppliers in the automotive industry will be able to detect relevant manufacturing defects within the camera window area more accurately paving the way for a holistic quality assurance of the windshield for future advanced driver-assistance system (ADAS) functionalities. Concurrently, the traceability of the measurement results is ensured by establishing a calibration chain based on a single reference lens, which is traced back to international standards.}, language = {en} } @misc{Deckert2023, author = {Deckert, Carsten}, title = {Now What You Hear Is Not a Test: The Invention and Commercialization of Rap Music}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, doi = {10.20385/opus4-4113}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41134}, pages = {14}, year = {2023}, language = {en} } @inproceedings{Musall2011, author = {Musall, Eike}, title = {Null-/Plusenergiegeb{\"a}ude - Erfahrungen und Perspektiven zu klimaneutralen Geb{\"a}uden in Deutschland}, series = {1. Internationaler Plusenergie-Kongress, Bern}, booktitle = {1. Internationaler Plusenergie-Kongress, Bern}, address = {Bern}, year = {2011}, language = {en} } @article{IqbalPfeiffelmannBenimetal.2018, author = {Iqbal, Sohail and Pfeiffelmann, Bj{\"o}rn and Benim, Ali Cemal and Joos, Franz}, title = {Numerical analysis of lifted hydrogen flame}, series = {MATEC Web of Conferences}, volume = {240}, journal = {MATEC Web of Conferences}, publisher = {edp sciences}, issn = {2261-236X}, doi = {10.1051/matecconf/201824001014}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-27950}, year = {2018}, language = {en} } @article{PfeiffelmannBenimJoos2018, author = {Pfeiffelmann, Bj{\"o}rn and Benim, Ali Cemal and Joos, Franz}, title = {Numerical analysis of liquid jet impingement cooling of a thermoelectric generator}, series = {MATEC Web of Conferences}, volume = {240}, journal = {MATEC Web of Conferences}, publisher = {edp sciences}, issn = {2261-236X}, doi = {10.1051/matecconf/201824001032}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-27988}, year = {2018}, language = {en} } @inproceedings{YalcınkayaDurmazTepeetal.2024, author = {Yal{\c{c}}{\i}nkaya, Orhan and Durmaz, Ufuk and Tepe, Ahmet {\"U}mit and Benim, Ali Cemal and Uysal, {\"U}nal}, title = {Numerical Analysis of Roughened Target Surface for Enhancing Jet Impingement Cooling}, series = {Advances in Computational Heat and Mass Transfer: Proceedings of the 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023), 4-8 September, 2023, D{\"u}sseldorf, Germany}, volume = {1}, booktitle = {Advances in Computational Heat and Mass Transfer: Proceedings of the 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023), 4-8 September, 2023, D{\"u}sseldorf, Germany}, publisher = {Springer Nature}, address = {Cham}, isbn = {9783031672408}, issn = {2195-4356}, doi = {10.1007/978-3-031-67241-5_64}, pages = {713 -- 720}, year = {2024}, subject = {Numerische Str{\"o}mungssimulation}, language = {en} } @article{BenimIqbalJoosetal.2016, author = {Benim, Ali Cemal and Iqbal, Sohail and Joos, Franz and Wiedermann, Alexander}, title = {Numerical Analysis of Turbulent Combustion in a Model Swirl Gas Turbine Combustor}, series = {Journal of Combustion}, volume = {2016}, journal = {Journal of Combustion}, publisher = {Hindawi}, issn = {2090-1968}, doi = {10.1155/2016/2572035}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-28044}, pages = {1 -- 12}, year = {2016}, language = {en} } @article{Benim2021, author = {Benim, Ali Cemal}, title = {Numerical Calculation of Sink Velocities for Helminth Eggs in Water}, series = {Computation}, volume = {9}, journal = {Computation}, number = {12}, publisher = {MDPI}, issn = {2079-3197}, doi = {10.3390/computation9120136}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-37318}, year = {2021}, abstract = {The settling velocities of helminth eggs of three types, namely Ascaris suum (ASC), Trichuris suis (TRI), and Oesophagostomum spp. (OES), in clean tap water are computationally determined by means of computational fluid dynamics, using the general-purpose CFD software ANSYS Fluent 18.0. The previous measurements of other authors are taken as the basis for the problem formulation and validation, whereby the latter is performed by comparing the predicted sink velocities with those measured in an Owen tube. To enable a computational treatment, the measured shapes of the eggs are parametrized by idealizing them in terms of elementary geometric forms. As the egg shapes show a variation within each class, "mean" shapes are considered. The sink velocities are obtained through the computationally obtained drag coefficients. The latter are defined by means of steady-state calculations. Predicted sink velocities are compared with the measured ones. It is observed that the calculated values show a better agreement with the measurements, for ASC and TRI, compared to the theoretical sink values delivered by the Stokes theory. However, the observed agreement is still found not to be very satisfactory, indicating the role of further parameters, such as the uncertainties in the characterization of egg shapes or flocculation effects even in clean tap water.}, language = {en} } @article{TaymazAslanBenim2015, author = {Taymaz, Imdat and Aslan, Erman and Benim, Ali Cemal}, title = {Numerical investigation of incompressible fluid flow and heat transfer across a bluff body in a channel flow}, series = {Thermal Science}, volume = {19}, journal = {Thermal Science}, number = {2}, publisher = {doiSerbia}, doi = {10.2298/tsci120220145t}, pages = {537 -- 547}, year = {2015}, language = {en} } @article{KimSchnellScheffknechtetal.2007, author = {Kim, Ju Pyo and Schnell, Uwe and Scheffknecht, G{\"u}nter and Benim, Ali Cemal}, title = {Numerical modelling of MILD combustion for coal}, series = {Progress in Computational Fluid Dynamics}, volume = {7}, journal = {Progress in Computational Fluid Dynamics}, number = {6}, publisher = {Inderscience Publishers}, issn = {1468-4349}, doi = {10.1504/PCFD.2007.014683}, year = {2007}, subject = {Numerische Str{\"o}mungssimulation}, language = {en} } @inproceedings{SaeedrashedSachdevaSinghetal.2024, author = {Saeedrashed, Younis and Sachdeva, Aryaman and Singh, Srijna and Benim, Ali Cemal}, title = {Numerical Simulation of Cavitation Characteristics on Stepped Spillway Due to Different Geometry Configuration}, series = {Advances in Computational Heat and Mass Transfer: Proceedings of the 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023), 4-8 September, 2023, D{\"u}sseldorf, Germany}, volume = {2}, booktitle = {Advances in Computational Heat and Mass Transfer: Proceedings of the 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023), 4-8 September, 2023, D{\"u}sseldorf, Germany}, publisher = {Springer Nature}, address = {Cham}, isbn = {9783031666087}, issn = {2195-4356}, doi = {10.1007/978-3-031-66609-4_66}, pages = {715 -- 725}, year = {2024}, subject = {Numerische Str{\"o}mungssimulation}, language = {en} } @article{BaşaranBenimYurddas2021, author = {Ba{\c{s}}aran, An{\i}l and Benim, Ali Cemal and Yurddas, Ali}, title = {Numerical Simulation of the Condensation Flow of the Isobutane (R600a) inside Microchannel}, series = {Heat Transfer Engineering}, volume = {43}, journal = {Heat Transfer Engineering}, number = {3-5}, publisher = {Taylor \& Francis}, issn = {0145-7632}, doi = {10.1080/01457632.2021.1874668}, pages = {337 -- 361}, year = {2021}, language = {en} } @article{ShahzadGulistanAlietal.2020, author = {Shahzad, Azeem and Gulistan, Uzma and Ali, Ramzan and Iqbal, Azhar and Benim, Ali Cemal and Kamran, Muhammad and Khan, Salah Ud-Din and Khan, Shahab Ud-Din and Farooq, Aamir}, title = {Numerical Study of Axisymmetric Flow and Heat Transfer in a Liquid Film over an Unsteady Radially Stretching Surface}, series = {Mathematical Problems in Engineering}, volume = {2020}, journal = {Mathematical Problems in Engineering}, publisher = {Hindawi}, doi = {10.1155/2020/6737243}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-27755}, pages = {1 -- 9}, year = {2020}, language = {en} } @incollection{CanalBenim2025, author = {Canal, Cansu Deniz and Benim, Ali Cemal}, title = {Numerical Study of Co-Firing in Swirl Burner Using Coal-Biomass Blends}, series = {Mathematical Theory and Simulation of Scientific Problems: FIAM-2023, Dubai, UAE, December 21-22}, volume = {Springer Proceedings in Mathematics \& Statistics, Bd. 487}, booktitle = {Mathematical Theory and Simulation of Scientific Problems: FIAM-2023, Dubai, UAE, December 21-22}, editor = {Sharma, Rajesh Kumar and Srivastava, Shailesh Kumar and Benim, Ali Cemal}, publisher = {Springer Nature}, address = {Singapore}, isbn = {9789819625789}, issn = {2194-1009}, doi = {10.1007/978-981-96-2579-6_3}, pages = {21 -- 32}, year = {2025}, subject = {Numerische Str{\"o}mungssimulation}, language = {en} } @article{PfeiffelmannBenim2018, author = {Pfeiffelmann, Bj{\"o}rn and Benim, Ali Cemal}, title = {Numerical study of the quenching of a laminar premixed hydrogen flame}, series = {MATEC Web of Conferences}, volume = {240}, journal = {MATEC Web of Conferences}, publisher = {edp sciences}, issn = {2261-236X}, doi = {10.1051/matecconf/201824001031}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-27976}, year = {2018}, language = {en} } @article{LuRohrerHollandetal.2012, author = {Lu, K. D. and Rohrer, F. and Holland, F. and Fuchs, H. and Bohn, Birger and Brauers, Theo and Chang, C. C. and H{\"a}seler, R. and Hu, M. and Kita, K. and Kondo, Y. and Li, X. and Lou, S. R. and Nehr, Sascha and Shao, M. and Zeng, L. M. and Wahner, A. and Zhang, Y. H. and Hofzumahaus, A.}, title = {Observation and modelling of OH and HO2 concentrations in the Pearl River Delta 2006: a missing OH source in a VOC rich atmosphere}, series = {Atmospheric Chemistry and Physics}, volume = {12}, journal = {Atmospheric Chemistry and Physics}, number = {3}, publisher = {Copernicus}, issn = {1680-7324}, doi = {10.5194/acp-12-1541-2012}, pages = {1541 -- 1569}, year = {2012}, abstract = {Abstract. Ambient OH and HO2 concentrations were measured by laser induced fluorescence (LIF) during the PRIDE-PRD2006 (Program of Regional Integrated Experiments of Air Quality over the Pearl River Delta, 2006) campaign at a rural site downwind of the megacity of Guangzhou in Southern China. The observed OH concentrations reached daily peak values of (15-26) × 106 cm-3 which are among the highest values so far reported for urban and suburban areas. The observed OH shows a consistent high correlation with j(O1D) over a broad range of NOx conditions. The correlation cannot be reproduced by model simulations, indicating that OH stabilizing processes are missing in current models. The observed OH exhibited a weak dependence on NOx in contrast to model predictions. While modelled and measured OH agree well at NO mixing ratios above 1 ppb, a continuously increasing underprediction of the observed OH is found towards lower NO concentrations, reaching a factor of 8 at 0.02 ppb NO. A dependence of the modelled-to-measured OH ratio on isoprene cannot be concluded from the PRD data. However, the magnitude of the ratio fits into the isoprene dependent trend that was reported from other campaigns in forested regions. Hofzumahaus et al. (2009) proposed an unknown OH recycling process without NO, in order to explain the high OH levels at PRD in the presence of high VOC reactivity and low NO. Taking a recently discovered interference in the LIF measurement of HO2 into account, the need for an additional HO2 → OH recycling process persists, but the required source strength may be up to 20\% larger than previously determined. Recently postulated isoprene mechanisms by Lelieveld et al. (2008) and Peeters and M{\"u}ller (2010) lead to significant enhancements of OH expected for PRD, but an underprediction of the observed OH by a factor of two remains at low NO (0.1-0.2 ppb). If the photolysis of hydroperoxy aldehydes from isoprene is as efficient as proposed by Peeters and M{\"u}ller (2010), the corresponding OH formation at PRD would be more important than the primary OH production from ozone and HONO. While the new isoprene mechanisms need to be confirmed by laboratory experiments, there is probably need for other, so far unidentified chemical processes to explain entirely the high OH levels observed in Southern China.}, language = {en} } @inproceedings{WeberHewelingFischeretal.2017, author = {Weber, Konradin and Heweling, Georg and Fischer, Christian and Lange, Martin and B{\"o}hlke, Christoph}, title = {Octocopter investigation of the vertical and horizontal variation of ultrafine particles, fine particulate matter and soot in the traffic plume emitted from a Rhine river bridge in Duesseldorf, Germany}, series = {Geophysical Research Abstracts: EGU General Assembly 2017}, volume = {19}, booktitle = {Geophysical Research Abstracts: EGU General Assembly 2017}, publisher = {Copernicus}, address = {G{\"o}ttingen}, year = {2017}, abstract = {For this study an octocopter UAV was used for carrying an ultrafine (UFP) particle monitor, an optical particle counter (OPC) and a micro aethalometer. The UFP-monitor, based on electrical charging of UFPs, was able to count the number of UFPs and give an estimated mean diameter of the measured particles. The OPC, based on the particle induced light scattering of a laser beam, was able to detect aerosols in a size range of about 250 nm to 32 μm in 31 bins. The micro aethalometer measured the soot by optical attenuation of a light beam which is caused by carbon particulate matter. The octocopter with a lift off weight by 10.5 kg was especially designed and constructed at the University of Applied Sciences, Duesseldorf, for the measurement of air pollutants. It was equipped with eight 900 W electric engines and a pixhawk flight control. Technically this octocopter was able to climb up to altitudes of up to 2 km AGL. However, during this study an altitude range of several 10 meters was used. During this study about 60 octocopter flights were performed. The flights clearly revealed a plume of UFPs coming from the traffic on the bridge. This result was confirmed by various upwind and downwind measurements with the octocopter in the region of the bridge.}, subject = {Messtechnik}, language = {en} } @inproceedings{RakowFaeskornWoykeSaatzetal.2022, author = {Rakow, Thomas C. and Faeskorn-Woyke, Heide and Saatz, Inga Marina and Knolle, Harm}, title = {OER Tools and Courses for Teaching Database Systems as Developed in the Project EILD.nrw}, series = {LWDA'22: Lernen, Wissen, Daten, Analysen. October 05-07, 2022, Hildesheim, Germany}, volume = {CEUR Workshop Proceedings: 3341}, booktitle = {LWDA'22: Lernen, Wissen, Daten, Analysen. October 05-07, 2022, Hildesheim, Germany}, editor = {Reuss, Pascal and Eisenstadt, Viktor and Sch{\"o}nborn, Jakob and Sch{\"a}fer, Jero}, publisher = {CEUR-WS}, address = {Aachen}, issn = {1613-0073}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40622}, year = {2022}, abstract = {In the EILD.nrw project, Open Educational Resources (OER) are being developed for teaching databases. Instructors can use the tools and courses in a variety of learning scenarios. Students of computer science and application subjects learn the complete life cycle of databases. For this purpose, quizzes, interactive tools, instructional videos, and courses for learning management systems are developed and published under a Creative Commons license.}, language = {en} } @article{Gerhards2023, author = {Gerhards, Claudia}, title = {Of tubes and telegrams: The names of social media platforms and messenger services}, series = {Convergence: The International Journal of Research into New Media Technologies}, volume = {0}, journal = {Convergence: The International Journal of Research into New Media Technologies}, number = {0}, publisher = {Sage}, issn = {1748-7382}, doi = {10.1177/13548565231174591}, pages = {1 -- 25}, year = {2023}, language = {en} } @article{FuchsAcirBohnetal.2014, author = {Fuchs, H. and Acir, Ismail-Hakki and Bohn, Birger and Brauers, Theo and Dorn, Hans-Peter and H{\"a}seler, R. and Hofzumahaus, A. and Holland, F. and Kaminski, M. and Li, X. and Lu, K. and Lutz, A. and Nehr, Sascha and Rohrer, F. and Tillmann, R. and Wegener, R. and Wahner, A.}, title = {OH regeneration from methacrolein oxidation investigated in the atmosphere simulation chamber SAPHIR}, series = {Atmospheric Chemistry and Physics}, volume = {14}, journal = {Atmospheric Chemistry and Physics}, number = {15}, publisher = {Copernicus}, issn = {1680-7324}, doi = {10.5194/acp-14-7895-2014}, pages = {7895 -- 7908}, year = {2014}, abstract = {Abstract. Hydroxyl radicals (OH) are the most important reagent for the oxidation of trace gases in the atmosphere. OH concentrations measured during recent field campaigns in isoprene-rich environments were unexpectedly large. A number of studies showed that unimolecular reactions of organic peroxy radicals (RO2) formed in the initial reaction step of isoprene with OH play an important role for the OH budget in the atmosphere at low mixing ratios of nitrogen monoxide (NO) of less than 100 pptv. It has also been suggested that similar reactions potentially play an important role for RO2 from other compounds. Here, we investigate the oxidation of methacrolein (MACR), one major oxidation product of isoprene, by OH in experiments in the simulation chamber SAPHIR under controlled atmospheric conditions. The experiments show that measured OH concentrations are approximately 50\% larger than calculated by the Master Chemical Mechanism (MCM) for conditions of the experiments (NO mixing ratio of 90 pptv). The analysis of the OH budget reveals an OH source that is not accounted for in MCM, which is correlated with the production rate of RO2 radicals from MACR. In order to balance the measured OH destruction rate, 0.77 OH radicals (1σ error: ± 0.31) need to be additionally reformed from each reaction of OH with MACR. The strong correlation of the missing OH source with the production of RO2 radicals is consistent with the concept of OH formation from unimolecular isomerization and decomposition reactions of RO2. The comparison of observations with model calculations gives a lower limit of 0.03 s-1 for the reaction rate constant if the OH source is attributed to an isomerization reaction of MACR-1-OH-2-OO and MACR-2-OH-2-OO formed in the MACR + OH reaction as suggested in the literature (Crounse et al., 2012). This fast isomerization reaction would be a competitor to the reaction of this RO2 species with a minimum of 150 pptv NO. The isomerization reaction would be the dominant reaction pathway for this specific RO2 radical in forested regions, where NO mixing ratios are typically much smaller.}, language = {en} } @article{AckermannFiedlerBrinkmannetal.2020, author = {Ackermann, David and Fiedler, Felicitas and Brinkmann, Fabian and Schneider, Martin and Weinzierl, Stefan}, title = {On the Acoustic Qualities of Dynamic Pseudo-Binaural Recordings}, series = {Journal of the Audio Engineering Society}, volume = {68}, journal = {Journal of the Audio Engineering Society}, number = {6}, publisher = {Audio-Engineering Society}, issn = {0004-7554}, doi = {10.17743/jaes.2020.0036}, pages = {418 -- 427}, year = {2020}, abstract = {The motion-tracked binaural (MTB) technique allows the dynamic, pseudobinaural rendering of spatial sound scenes recorded by a circular array of microphones on a rigid sphere. The system provides a multichannel live audio transmission from which a head-related signal with approximated interaural time and level differences can be derived and played via headphones, head tracking, and a corresponding rendering software. The latter is mainly calculating imperceptible interpolation between channel pairs during head movements. This contribution evaluates the potential of this format for the creation of virtual acoustic envi- ronments. Based on the technical realization of a 16-channel MTB array with omnidirectional diffuse field-corrected electret condenser microphone capsules, the plausibility of 8 and 16-channel recordings was tested against a physical sound source. Furthermore, the sound quality of the pseudobinaural rendering was assessed based on different items of the Spatial Audio Quality Inventory (SAQI) compared to a true dynamic binaural reference. The results show that the overall plausibility of the MTB signal with optimal interpolation is close to the reference. Even if there are small differences with respect to tone color and spatial sound source attributes, the degree of externalization and even the perceived source elevation were, despite the absence of pinna cues, well comparable to the true binaural reference.}, language = {en} }