@article{PollackLueckWolfetal., author = {Pollack, Moritz and L{\"u}ck, Andrea and Wolf, Mario and Kraft, Eckhard and V{\"o}lker, Conrad}, title = {Energy and Business Synergy: Leveraging Biogenic Resources from Agriculture, Waste, and Wastewater in German Rural Areas}, series = {Sustainability}, volume = {2023}, journal = {Sustainability}, number = {volume 15, issue 24, article 16573}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/su152416573}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231222-65172}, pages = {1 -- 25}, abstract = {The imperative to transform current energy provisions is widely acknowledged. However, scant attention has hitherto been directed toward rural municipalities and their innate resources, notably biogenic resources. In this paper, a methodological framework is developed to interconnect resources from waste, wastewater, and agricultural domains for energy utilization. This entails cataloging existing resources, delineating their potential via quantitative assessments utilizing diverse technologies, and encapsulating them in a conceptual model. The formulated models underwent iterative evaluation with engagement from diverse stakeholders. Consequently, 3 main concepts, complemented by 72 sub-concepts, were delineated, all fostering positive contributions to climate protection and providing heat supply in the rural study area. The outcomes' replicability is underscored by the study area's generic structure and the employed methodology. Through these inquiries, a framework for the requisite energy transition, with a pronounced emphasis on the coupling of waste, wastewater, and agriculture sectors in rural environments, is robustly analyzed.}, subject = {Energiewende}, language = {en} } @book{Bennke, author = {Bennke, Johannes}, title = {Obliteration. F{\"u}r eine partikulare Medienphilosophie nach Emmanuel Levinas}, publisher = {transcript}, address = {Bielefeld}, isbn = {978-3-8376-6791-2}, doi = {10.14361/9783839467916}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231207-65009}, publisher = {Bauhaus-Universit{\"a}t Weimar}, pages = {420}, abstract = {Es gibt keine Kreativit{\"a}t ohne Obliteration - also ohne {\"U}berschreiben und Entwerten oder Vergessen und Vernichten. Johannes Bennke setzt erstmals die Obliteration ins Zentrum der Medienphilosophie und deckt im Anschluss an Emmanuel Levinas in ihr etwas bildlich Negatives auf. Als Differenzfigur erlangt die Obliteration gestalterische Sprengkraft sowie ethische und epistemologische Relevanz. {\"U}ber Bildkonjunktionen als genuine Methode der Bildwissenschaft entsteht so eine Theorie der Kunst und eine Philosophie des Medialen nach Levinas, die sedimentierte Wissensformen ersch{\"u}ttert und im Zeichen eines Lebens mit Anderen erneuert.}, subject = {Bildwissenschaft}, language = {de} } @article{SchwenkeSoebkeKraft, author = {Schwenke, Nicolas and S{\"o}bke, Heinrich and Kraft, Eckhard}, title = {Potentials and Challenges of Chatbot-Supported Thesis Writing: An Autoethnography}, series = {Trends in Higher Education}, volume = {2023}, journal = {Trends in Higher Education}, number = {Volume 2, issue 4}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/higheredu2040037}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231207-65016}, pages = {611 -- 635}, abstract = {The release of the large language model-based chatbot ChatGPT 3.5 in November 2022 has brought considerable attention to the subject of artificial intelligence, not only to the public. From the perspective of higher education, ChatGPT challenges various learning and assessment formats as it significantly reduces the effectiveness of their learning and assessment functionalities. In particular, ChatGPT might be applied to formats that require learners to generate text, such as bachelor theses or student research papers. Accordingly, the research question arises to what extent writing of bachelor theses is still a valid learning and assessment format. Correspondingly, in this exploratory study, the first author was asked to write his bachelor's thesis exploiting ChatGPT. For tracing the impact of ChatGPT methodically, an autoethnographic approach was used. First, all considerations on the potential use of ChatGPT were documented in logs, and second, all ChatGPT chats were logged. Both logs and chat histories were analyzed and are presented along with the recommendations for students regarding the use of ChatGPT suggested by a common framework. In conclusion, ChatGPT is beneficial for thesis writing during various activities, such as brainstorming, structuring, and text revision. However, there are limitations that arise, e.g., in referencing. Thus, ChatGPT requires continuous validation of the outcomes generated and thus fosters learning. Currently, ChatGPT is valued as a beneficial tool in thesis writing. However, writing a conclusive thesis still requires the learner's meaningful engagement. Accordingly, writing a thesis is still a valid learning and assessment format. With further releases of ChatGPT, an increase in capabilities is to be expected, and the research question needs to be reevaluated from time to time.}, subject = {Chatbot}, language = {en} } @article{LizarazuHarirchianShaiketal., author = {Lizarazu, Jorge and Harirchian, Ehsan and Shaik, Umar Arif and Shareef, Mohammed and Antoni-Zdziobek, Annie and Lahmer, Tom}, title = {Application of machine learning-based algorithms to predict the stress-strain curves of additively manufactured mild steel out of its microstructural characteristics}, series = {Results in Engineering}, volume = {2023}, journal = {Results in Engineering}, number = {Volume 20 (2023)}, publisher = {Elsevier}, address = {Amsterdam}, doi = {10.1016/j.rineng.2023.101587}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231207-65028}, pages = {1 -- 12}, abstract = {The study presents a Machine Learning (ML)-based framework designed to forecast the stress-strain relationship of arc-direct energy deposited mild steel. Based on microstructural characteristics previously extracted using microscopy and X-ray diffraction, approximately 1000 new parameter sets are generated by applying the Latin Hypercube Sampling Method (LHSM). For each parameter set, a Representative Volume Element (RVE) is synthetically created via Voronoi Tessellation. Input raw data for ML-based algorithms comprises these parameter sets or RVE-images, while output raw data includes their corresponding stress-strain relationships calculated after a Finite Element (FE) procedure. Input data undergoes preprocessing involving standardization, feature selection, and image resizing. Similarly, the stress-strain curves, initially unsuitable for training traditional ML algorithms, are preprocessed using cubic splines and occasionally Principal Component Analysis (PCA). The later part of the study focuses on employing multiple ML algorithms, utilizing two main models. The first model predicts stress-strain curves based on microstructural parameters, while the second model does so solely from RVE images. The most accurate prediction yields a Root Mean Squared Error of around 5 MPa, approximately 1\% of the yield stress. This outcome suggests that ML models offer precise and efficient methods for characterizing dual-phase steels, establishing a framework for accurate results in material analysis.}, subject = {Maschinelles Lernen}, language = {en} } @article{BertramAltrock, author = {Bertram, Grischa Frederik and Altrock, Uwe}, title = {Jenseits agonistischer Planungstheorien: Die „Normalit{\"a}t"von Protesten und ihr Einfluss auf die Konfliktaustragungin der r{\"a}umlichen Planung}, series = {Raumforschung und Raumordnung}, volume = {2023}, journal = {Raumforschung und Raumordnung}, number = {Vol. 81, No. 5}, publisher = {oekom Verlag}, address = {M{\"u}nchen}, doi = {10.14512/rur.1674}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231207-64995}, pages = {493 -- 508}, abstract = {Die Planungsforschung hat sich sp{\"a}testens seit der „kommunikativen Wende" intensiv damit besch{\"a}ftigt, wie mit Konflikten umgegangen werden soll und wird. Ans{\"a}tze der „agonistischen" Planungstheorie widersprechen der normativen Pr{\"a}misse, Konsensbildung unter den Planungsbeteiligten anzustreben. Vielmehr wollen sie widerstreitende Positionen normativ f{\"u}r die r{\"a}umliche Entwicklung fruchtbar machen. Zugleich betonen sie eine vermeintliche Dualit{\"a}t von Planung und Protest, die in der neueren Protesttheorie infrage gestellt wird. Dieser Beitrag zeigt aufbauend auf einer Diskussion von planungs- und protesttheoretischen Ans{\"a}tzen und einer empirischen Analyse planungsbezogener Proteste in Deutschland, dass diese Proteste von den Planungsakteuren zwar immer st{\"a}rker als „Normalit{\"a}t" aufgefasst werden und antagonistische Partizipation trotz zunehmender Konflikthaftigkeit und vermeintlicher Infragestellung der repr{\"a}sentativen Demokratie kulturell regelgebunden bleibt. Protesthandeln ist Teil ausdifferenzierter „Partizipationsb{\"u}ndel", die situationsbezogen auch Teilnahme an Beteiligungsverfahren, direktdemokratische Verfahren und Klagen umfassen. Protestierende verfolgen dabei meist eine eher reformorientierte Agenda, die keiner „Z{\"a}hmung" bedarf. Allerdings k{\"o}nnen die zugrunde liegenden Konflikte h{\"a}ufig gar nicht „gel{\"o}st" werden. Planenden hingegen k{\"o}nnen auch innerhalb eines agonistischen Planungsumfelds rationalistische und deliberative Ans{\"a}tze zur Verf{\"u}gung stehen, die sie situationsbezogen und strategisch nutzen.}, subject = {Raumplanung}, language = {de} } @article{BrokowLogaKrueger, author = {Brokow-Loga, Anton and Kr{\"u}ger, Timmo}, title = {Potentials of Climate Emergency Declarations for degrowth transformations. The ambivalent stance of German municipalities in conflicts over a post-fossil future}, series = {Raumforschung und Raumordnung}, volume = {2023}, journal = {Raumforschung und Raumordnung}, number = {Vol. 81, No. 5}, publisher = {oekom Verlag}, address = {M{\"u}nchen}, doi = {10.14512/rur.1666}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231204-64984}, pages = {523 -- 537}, abstract = {This paper addresses the scope for action by municipalities in a climate emergency and places it in the framework of ecomodern (urban) policy. We analyse the way in which two German 'climate emergency municipalities' translate conflicts of post-fossil transformation into concrete political and planning strategies. Although more than 2,200 authorities around the world have already declared a climate emergency, research on the impact of these resolutions on the political orientation of municipalities is very limited. Our research focus is on the (potentially agonistic) treatment of conflicts in planning. We argue that in times of a socio-ecological crisis, success in conflict resolution cannot refer to appeasement and depoliticisation. Instead, we propose a framework of five criteria, based on critical theory on ecomodern strategies, planning processes and degrowth. Thus, this practice-related and explorative paper connects empirical insights from the German cities of Constance and Berlin with an innovative normative framework. The findings tell a complex story of an, at least partial, admission of the failure of previous climate mitigation strategies, a lack of social institutions of limits, an instrumental relation to nature and a disregard for social injustices. The paper discusses how municipalities, in the context of ongoing tensions over the post-fossil transformation in Germany, on the one hand hold on to business-as-usual approaches, but on the other hand also set political impulses for change.}, subject = {Stadtentwicklung}, language = {de} } @phdthesis{Schwalbe, author = {Schwalbe, Friederike Simone}, title = {Die Genese der Th{\"u}ringer Kunstvereinslandschaft im ausgehenden 19. und fr{\"u}hen 20. Jahrhundert}, doi = {10.25643/bauhaus-universitaet.6487}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231121-64870}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {596}, abstract = {Zu Beginn des 19. Jahrhunderts existierten in Deutschland noch keine {\"o}ffentlichen Museen, welche sich der Pr{\"a}sentation von Kunst widmeten und dem zeitgen{\"o}ssischen Kunstschaffen einen Raum bieten konnten. In den Genuss von Malerei und bildender Kunst kamen damit lediglich jene gesellschaftlichen St{\"a}nde, denen durch Macht, Prestige und Adelszugeh{\"o}rigkeit dieses Privileg zu Teil wurde. Als neue Form des Erwachens der Bourgeoisie entwickelt, repr{\"a}sentierten die sich im Entstehen befindlichen Kunstvereine erstmalig eine wirkungsvolle, dem Adel den Vormachtanspruch auf Kunst und Kultur entreißende Instanz, welche die M{\"o}glichkeit der {\"o}ffentlichen Kunstvermittlung und Pr{\"a}sentation boten. Zwischen 1860 und 1945 entstand auf dem Gebiet des heutigen Landes Th{\"u}ringen eine Unzahl an Kunstvereinen, K{\"u}nstlerb{\"u}nden und Kunstgesellschaften, welche die Gegenwartskunst und ihre lokalen K{\"u}nstler f{\"o}rderten. Nach dem Ende des Zweiten Weltkrieges verschwanden diese F{\"o}rderer jedoch g{\"a}nzlich von der Bildfl{\"a}che und ihr Wirken geriet in Vergessenheit. Bisher fand die Vergangenheit dieser Kunstvereine und -b{\"u}nde nur wenig Aufmerksamkeit in der Kunstgeschichtsbetrachtung. Daher versucht die vorliegende Dissertation die Konstitutionen, Strukturen, die Wirksamkeit und den Einsatz f{\"u}r die (moderne) Kunst von 15 Kunstvereinen, -gesellschaften und K{\"u}nstlervereinen nachzuzeichnen und damit l{\"a}ngst {\"u}berf{\"a}llige Erkenntnisse der Beitragsleistung zur Kulturt{\"a}tigkeit der Institutionen zu erbringen. Das {\"U}berblickswerk leistet einen ersten Vorstoß in die noch weithin unbekannten Kunstvereinsgefilde in Th{\"u}ringen, vor allem auch im Kontext des nationalen Gef{\"u}ges. Die historische Betrachtung, die Darstellung der Ausstellungspraxis und die finanziellen Handlungsrahmen sollen als direkte Vergleichsans{\"a}tze die prim{\"a}re Gegen{\"u}berstellung erleichtern.}, subject = {Kunstgeschichte}, language = {de} } @periodical{AinioBartetzkyGyőrffyetal., author = {Ainio, Anna and Bartetzky, Arnold and Győrffy, Rachel and Islam, Naslima and Khvadagiani, Irakli and Kibel, Jochen and Landau-Donnelly, Friederike and Leko, Kristina and Lenz, Patricia and Onuoha, Nnenna and Rathjen, Lukas and Reinsch, Natalie and Rykov, Anatol and Tajeri, Niloufar and Ullmanov{\´a}, Kl{\´a}ra}, title = {Censored? Conflicted Concepts of Cultural Heritage}, editor = {Din{\c{c}}{\c{c}}ağ Kahveci, Ay{\c{s}}eg{\"u}l and Hajdu, Marcell and H{\"o}hne, Wolfram and Jesse, Darja and Karpf, Michael and Torres Ruiz, Marta}, publisher = {Bauhaus-Universit{\"a}tsverlag}, address = {Weimar}, isbn = {978-3-95773-304-7}, doi = {10.25643/bauhaus-universitaet.4927}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230213-49276}, pages = {181}, abstract = {Those who ask how social entities relate to the past, enter a field defined by competing interpretations and contested practices of a collectively shared heritage. Dissent and conflict among heritage communities represent productive moments in the negotiation of these varying constructs of the past, identities, and heritage. At the same time, they lead to omissions, the overwriting and amendment of existing constructs. A closer look at all that is suppressed, excluded or rejected opens up new perspectives: It reveals how social groups are formed through public disputes upon the material foundations of heritage constructs. Taking the concept of censorship, the volume engages with the exclusionary and inclusionary mechanisms that underlie the construction of heritage and thus social identities. Censorship is understood here as a discursive strategy in public debates. In current debates, allegations of censorship surface primarily in cases where the handling of a certain heritage constructs is subjected to critical evaluation, or on the contrary, needs to be protected from criticism or even destruction. The authors trace the connection between heritage and identity and show that identity constructs are not only manifested within heritage but are actively negotiated through it.}, subject = {Kulturerbe}, language = {en} } @incollection{SimonRitz, author = {Simon-Ritz, Frank}, title = {Der Bibliothek eine Stimme geben: Die Integration von Lobby-Arbeit in den beruflichen Alltag}, series = {Praxishandbuch Wissenschaftliche Bibliothekar:innen}, booktitle = {Praxishandbuch Wissenschaftliche Bibliothekar:innen}, publisher = {De Gruyter}, address = {Berlin}, doi = {10.1515/9783110790375-042}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231102-64826}, pages = {395 -- 401}, abstract = {Dass Lobby-Arbeit auch f{\"u}r Bibliotheken und damit auch f{\"u}r Bibliothekar:innen unverzichtbar ist, hat sich als Erkenntnis mittlerweile durchgesetzt. Im Folgenden soll - ausgehend von einer kurzen Betrachtung des Stellenwerts der Lobbyarbeit in der bibliothekarischen Verbandsarbeit - aufgezeigt werden, welche Rolle Lobbyaktivit{\"a}ten im bibliothekarischen Alltag spielen k{\"o}nnten bzw. sollten.}, subject = {Bibliothek}, language = {de} } @article{Suhr, author = {Suhr, Maike}, title = {Diversit{\"a}t und (Anti-)Diskriminierung im Kontext journalistischer Neugr{\"u}ndungen: Eine Forschungsagenda}, series = {Global Media Journal German Edition}, volume = {2023}, journal = {Global Media Journal German Edition}, number = {Volume 13, No 1}, doi = {10.22032/dbt.57907}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231027-64836}, pages = {1 -- 19}, abstract = {Obgleich redaktionelle Diversit{\"a}t regelm{\"a}ßig als eine der Kernherausforderungen f{\"u}r den Journalismus gehandelt wird, tun sich journalistische Organisationen immer noch schwer damit, gleichberechtigte Zugangs-und Entfaltungschancen f{\"u}r Frauen, People of Color, Menschen aus Einwandererfamilien oder auf anderen Ebenen diskriminierungsbetroffene Journalist*innen zu schaffen. Stattdessen zeigt die gender-und diversit{\"a}tsbezogene Redaktionsforschung, dass Redaktionen nach wie vor in ihren Strukturen, Praktiken und in ihrer Kultur gesellschaftliche Machtverh{\"a}ltnisse widerspiegeln und (re-)produzieren. Doch im Zuge des „Entrepreneurial Journalism" entstehen heute vielerorts neue Organisationen. Diese journalistischen Neugr{\"u}ndungen zeichnen sich unter anderem durch kleinere, offenere und flexiblere Organisationsstrukturen aus. Ihr ver{\"a}nderter organisationaler Charakter wurde jedoch bislang noch nicht tiefergehend im Hinblick auf seine Potenziale und m{\"o}glichen Risiken f{\"u}r Diversit{\"a}t und (Anti-)Diskriminierung untersucht. Der Beitrag hat somit zum Ziel, journalistische Neugr{\"u}ndungen als neuen Gegenstand auf der Agenda der organisations-und diskriminierungsbezogenen Journalismusforschung zu positionieren. Dazu werden ausgew{\"a}hlte Studien zum „Entrepreneurial Journalism" im Hinblick auf Diversit{\"a}t und (Anti-)Diskriminierung aufgearbeitet und bestehende Desiderata identifiziert. Auf dieser Grundlage wird schließlich eine programmatische Forschungsagenda entwickelt, um empirische Folgeforschung zum Thema anzustoßen.}, subject = {Journalismus}, language = {de} } @article{PartschefeldTutalHalmansederetal., author = {Partschefeld, Stephan and Tutal, Adrian and Halmanseder, Thomas and Schneider, Jens and Osburg, Andrea}, title = {Investigations on Stability of Polycarboxylate Superplasticizers in Alkaline Activators for Geopolymer Binders}, series = {Materials}, volume = {2023}, journal = {Materials}, number = {Volume 16, issue 15, article 5369}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/ma16155369}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231026-64809}, pages = {1 -- 14}, abstract = {Calcined clays are interesting starting materials to be used as SCMs (supplementary cementitious materials) in cements or to be converted to geopolymers by activation with a high alkaline activator. The adjustment of the properties in the fresh state, especially regarding the consistency of these binders, is almost exclusively achieved by the addition of water, since commercially available superplasticizers seem to be ineffective in low-calcium geopolymer systems. The aim of this study was a systematic investigation of various PCE (polycarboxylate ester/ether) superplasticizers (methacrylate ester PCE: MPEG, isoprenol ether PCE: IPEG, methallyl ether PCE: HPEG) with respect to their stability in different alkaline activators (NaOH, KOH, sodium and potassium silicate solutions). The effectiveness of superplasticizers (SPs) in low-calcium geopolymer binders was verified by rheological tests. Size exclusion chromatography was used to investigate if structural degradation of the superplasticizers occurs. The investigated PCE superplasticizers showed a thickening effect in the low-calcium geopolymer system. Depending on the alkalinity of the activator solution, a degradation process was detected for all the PCEs investigated. The side chains of the PCEs are cleaved off the backbone by basic ester and ether hydrolysis. The highest degree of degradation was found in sodium and potassium silicate solutions. In alkaline hydroxide solutions, the degradation process increases with increasing alkalinity.}, subject = {Geopolymere}, language = {en} } @book{Siegler, author = {Siegler, Martin}, title = {SOS: Medien des {\"U}berlebens. Die existenzielle Bedeutung von Lebenszeichen in Notf{\"a}llen}, publisher = {De Gruyter}, address = {Berlin}, isbn = {978-3-11-107534-1}, doi = {10.1515/9783111075341}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231026-64816}, publisher = {Bauhaus-Universit{\"a}t Weimar}, pages = {348}, abstract = {SOS-Signale auf hoher See, Klopfzeichen in Tr{\"u}mmerfeldern, Flaschenposten am Strand: Wenn Menschen in Not geraten, m{\"u}ssen sie mit allen Mitteln auf sich aufmerksam machen. Sie m{\"u}ssen Lebenszeichen senden, um am Leben zu bleiben. Dieses Buch erforscht das Ph{\"a}nomen des Lebenszeichens erstmals aus der Perspektive von Medienkulturwissenschaft, Zeichentheorie und Existenzphilosophie. Anhand zahlreicher Katastrophenszenarien wie Erdbeben, Lawinen und Bergwerkungl{\"u}cken zeigt die Studie, warum Menschen in Not existenziell von Medien und Kommunikationsmitteln abh{\"a}ngen: Keine Lebenszeichen ohne Signalfackeln, Peilsender, Satelliten oder Infrarotsensoren. Medien in Notf{\"a}llen sind mehr als nur Mittel zur Kommunikation, sie sind Bedingungen menschlicher Existenz. Sie entscheiden, ob und wie sich Leben in Not {\"a}ußern kann, ob Lebenszeichen Geh{\"o}r finden und ob Leben gerettet wird. Damit werfen Lebenszeichen ein neues Licht auf die elementaren Bedingungen menschlichen Lebens: Sie zeigen uns, dass Menschen in Not nur {\"u}berleben, wenn sie mit Artefakten, Netzwerken und Infrastrukturen verbunden sind, die ihre Existenz erm{\"o}glichen.}, subject = {Medien}, language = {de} } @techreport{BockelmannFroelichKulik, author = {Bockelmann, Leo and Fr{\"o}lich-Kulik, Maria}, title = {Vogtland - Industriekultur und Zukunft. Perspektiven zum Umgang mit dem industriekulturellen Erbe im Vogtland}, doi = {10.25643/bauhaus-universitaet.6414}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230815-64140}, pages = {84}, abstract = {Die Brosch{\"u}re gibt einen {\"U}berblick {\"u}ber die angewandten Zug{\"a}nge und erarbeiteten Ergebnisse aus dem interdisziplin{\"a}ren Forschungsprojekt „Zukunftsindex Heimat und Baukultur 2025" der Professuren Denkmalpflege und Baugeschichte, Landschaftsarchitektur /-planung sowie Sozialwissenschaftliche Stadtforschung, durchgef{\"u}hrt 2021-2023 am Institut f{\"u}r Europ{\"a}ische Urbanistik (IfEU) der Bauhaus Universit{\"a}t Weimar.}, subject = {Industriekultur}, language = {de} } @phdthesis{Velte, author = {Velte, Jens Walter}, title = {Der Schl{\"u}ssel als Objekt im Wandel der Zeit}, doi = {10.25643/bauhaus-universitaet.6479}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231020-64798}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {323}, abstract = {In der Welt der Objekte z{\"a}hlt der Schl{\"u}ssel zu den wichtigsten und {\"a}ltesten Gebrauchs-gegenst{\"a}nden der Menschheit. Das Leben und die Werte der zivilisierten Kulturen werden durch dieses Objekt mitbestimmt. In dieser Arbeit wird der Wandel eines allgemeing{\"u}ltigen Produkts der heutigen Dingwelt in den Fokus gestellt. Zunehmend werden die Objekte der Dingwelt dematerialisiert. Die Beziehung der Nutzer zu den Objekten verliert an Wirkungskraft. Das zentrale Objekt der Beobachtungen und der Forschung ist der Schl{\"u}ssel als ein Artefakt der realen Dingwelt - im Wandel der Zeit, in Bezug auf die Notwendigkeiten der Nutzer und den ausschlaggebenden Technologien. Auf der Grundlage von strukturierten Daten sollen Maßnahmen f{\"u}r eine nutzerorientierte Produktgestaltung aufgezeigt werden. Oftmals fehlt das entsprechende Verst{\"a}ndnis f{\"u}r den Nutzer und dessen Anforderungen, um diese als Teil des Produktentstehungsprozess ein-beziehen zu k{\"o}nnen. Gegenstand dieser Arbeit ist die Analyse der Nutzer-Generationen im Kontext der Technologien mit Hinblick auf die Erarbeitung einer konzeptionellen Entwurfsbasis. Mit der vorliegenden Forschungsarbeit wird aufgezeigt, wie mit dem Verst{\"a}ndnis der historischen Untersuchungen, den Erkenntnissen der durchgef{\"u}hrten Studien und einem praxisorientierten Entstehungs-prozess k{\"u}nftige Ideen und Ans{\"a}tze, eine fortw{\"a}hrende und fundierte Grundlage der nutzerorientierten Gestaltung generiert werden kann. Die Arbeit verfolgt das Ziel, die Gestaltung der Produkte f{\"o}rderlich zu betrachten und einsetzen zu k{\"o}nnen.}, subject = {Schl{\"u}ssel}, language = {de} } @phdthesis{Wuendsch, author = {W{\"u}ndsch, Charlene}, title = {Entrepreneurial Branding: Eine praxistheoretische Analyse markenbildender Strategiepraktiken bei Startups}, doi = {10.25643/bauhaus-universitaet.6468}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231016-64680}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {229}, abstract = {Gr{\"u}ndungsunternehmen stehen vor der Herausforderung, eine unternehmerische Leistung zu entwickeln und gleichzeitig eine Markenidentit{\"a}t aufzubauen. Dabei sind sie mit finanziellen, personellen und strukturellen Besonderheiten konfrontiert, aber auch mit Unbekanntheit und Kundenunsicherheit. Die Dissertation zielt darauf ab, durch die Analyse markenbildender Strategiepraktiken einen Beitrag zur wissenschaftlichen Auseinandersetzung mit der Markenbildung bei Gr{\"u}ndungsunternehmen zu leisten und praktische Implikationen f{\"u}r angehende Gr{\"u}nder:innen sowie akademische Startup-Inkubatoren abzuleiten. Der Fokus liegt dabei auf Gr{\"u}ndungsvorhaben und Startups in der Vorgr{\"u}ndungs- oder fr{\"u}hen Gr{\"u}ndungsphase aus dem Hochschulumfeld. Zur Analyse markenbildender Strategiepraktiken wird der Strategy-as-Practice Ansatz (SAP) angewendet. Die qualitative Forschungsmethodik wird genutzt, um Handlungsmuster bestimmter Akteursgruppen in diesem spezifischen Kontext zu rekonstruieren. Beobachtungen, Interviews und Dokumente im Feld dienen als Grundlage f{\"u}r die Forschung. Die Ergebnisse dieser Arbeit liefern umfassende Einblicke in die markenbildende Praxis bei Gr{\"u}ndungsunternehmen. Auf Basis dieser Erkenntnisse wurde ein Modell entwickelt, das Komponenten beschreibt, die zusammen einen Handlungsrahmen f{\"u}r die Markenbildung in emergenten Strategiekontexten wie der Unternehmensgr{\"u}ndung bilden. Dieses Modell bietet die M{\"o}glichkeit, sich vor dem Hintergrund der gr{\"u}ndungsspezifischen Rahmenbedingungen mit der Markenentwicklung in der fr{\"u}hen Gr{\"u}ndungsphase auseinanderzusetzen und sie systematisch in das Gr{\"u}ndungsvorhaben zu implementieren.}, subject = {Entrepreneurship}, language = {de} } @phdthesis{Motalebi, author = {Motalebi, Mahgol}, title = {Immigrant's Home in the Making through Spatial Practice; The Case of Iranians in Berlin}, doi = {10.25643/bauhaus-universitaet.6426}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230925-64266}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {237}, abstract = {Due to the significant number of immigrants in Europe, especially Germany, integration is an ongoing subject of debate. Since the 1970s, with the emergence of the discussions on 'place,' it has also been realized that the immigrant experience is associated with location. Nevertheless, due to the challenges in capturing the place and migration relevance, there is a gap in understanding the role of the migrant's geography of experiences and its outcomes (Phillips \& Robinson, 2015). This research aims to investigate the extent to which both the process of objective integration and the socio-spatial practices of high-skilled Iranian immigrants in Berlin outline and influence their sense of belonging to Berlin as the new "home." The embedded mixed-method design had employed for this study. The quantitative analysis through Pearson's correlation technique measured the strength of the association between Iranians' settlement distribution and the characteristics of Berlins' districts. The quantitative analysis provides contextual data to get a greater level of understanding of the case study's interaction with place. The units of place intend to demonstrate the case study's presence and possible interaction with places around their settlement location that relatively shapes their perception. The qualitative analysis comprises ethnographic fieldwork and semi-structured in-depth interviews with a homogeneous sample of Iranian immigrants in Berlin that provide data on individual and ethnic behaviors and trajectories and analyze the complex interactions between the immigrant's experience and the role of place. This research uncovers that Iranian highly skilled immigrants are successful in integrating objectively; However, in regards to their state of belonging, it illustrated the following: The role of socio-ethnic culture of the case study in denotation of home and belonging; Iranian high-skilled immigrants' efforts towards reaching a level of upward mobility overshadow their attempt to shape social and spatial interaction with Berliners and Berlin itself, which manifests both in their perception and use of urban space; and finally, the identification practice and the boundary-making as an act of reassurance and self-protection against the generalization of adjacent nationalities, demonstrated in the intersection of demographical settlement distribution of Iranians in Berlin and the ethnic diversity, impact the sense of belonging and place-making.}, subject = {Migration}, language = {en} } @phdthesis{Velte, author = {Velte, Jens Walter}, title = {Der Schl{\"u}ssel als Objekt im Wandel der Zeit}, doi = {10.25643/bauhaus-universitaet.6424}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230921-64243}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {323}, abstract = {In der Welt der Objekte z{\"a}hlt der Schl{\"u}ssel zu den wichtigsten und {\"a}ltesten Gebrauchs-gegenst{\"a}nden der Menschheit. Das Leben und die Werte der zivilisierten Kulturen werden durch dieses Objekt mitbestimmt. In dieser Arbeit wird der Wandel eines allgemeing{\"u}ltigen Produkts der heutigen Dingwelt in den Fokus gestellt. Zunehmend werden die Objekte der Dingwelt dematerialisiert. Die Beziehung der Nutzer zu den Objekten verliert an Wirkungskraft. Das zentrale Objekt der Beobachtungen und der Forschung ist der Schl{\"u}ssel als ein Artefakt der realen Dingwelt - im Wandel der Zeit, in Bezug auf die Notwendigkeiten der Nutzer und den ausschlaggebenden Technologien. Auf der Grundlage von strukturierten Daten sollen Maßnahmen f{\"u}r eine nutzerorientierte Produktgestaltung aufgezeigt werden. Oftmals fehlt das entsprechende Verst{\"a}ndnis f{\"u}r den Nutzer und dessen Anforderungen, um diese als Teil des Produktentstehungsprozess ein-beziehen zu k{\"o}nnen. Gegenstand dieser Arbeit ist die Analyse der Nutzer-Generationen im Kontext der Technologien mit Hinblick auf die Erarbeitung einer konzeptionellen Entwurfsbasis. Mit der vorliegenden Forschungsarbeit wird aufgezeigt, wie mit dem Verst{\"a}ndnis der historischen Untersuchungen, den Erkenntnissen der durchgef{\"u}hrten Studien und einem praxisorientierten Entstehungs-prozess k{\"u}nftige Ideen und Ans{\"a}tze, eine fortw{\"a}hrende und fundierte Grundlage der nutzerorientierten Gestaltung generiert werden kann. Die Arbeit verfolgt das Ziel, die Gestaltung der Produkte f{\"o}rderlich zu betrachten und einsetzen zu k{\"o}nnen.}, subject = {Schl{\"u}ssel}, language = {de} } @phdthesis{Keller, author = {Keller, Enrico}, title = {Die Verwaltung von Dienstliegenschaften auf staatlicher Ebene - {\"U}ber das Wirken {\"o}konomischer Modelle in einem haushaltswirtschaftlichen Umfeld}, doi = {10.25643/bauhaus-universitaet.6421}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230914-64216}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {393}, abstract = {Diese Arbeit soll einen Beitrag zum Neuen Steuerungsmodell der {\"O}ffentlichen Verwaltung auf staatlicher Ebene in Deutschland leisten. Sie dient der Untersuchung zum Aufbau eines {\"o}konomischen Modells zur Koordination von Dienstliegenschaften auf staatlicher Ebene. Die Untersuchung der Dienstliegenschaften zeigt, dass diese eine interne Dienstbarkeit des Staates als Wirtschaftssubjekt an den Staat als Hoheitstr{\"a}ger fingieren. Die Untersuchung der Liegenschaftsverwaltung belegt, dass sie vor allem ein Controlling-Instrument f{\"u}r den Informationsfluss zu Entscheidungen {\"u}ber Dienstliegenschaften zwischen dem Hoheitstr{\"a}ger und dem Wirtschaftssubjekt darstellt. Die Untersuchung der Transaktionskosten beweist, dass eine Koordination am effizientesten {\"u}ber die eigene Organisation mittels dezentraler Aufgabenkonzentration in Form eines SSC erreicht werden kann. Die Untersuchung der Handlungs- und Verf{\"u}gungsrechte ergab, dass die Verf{\"u}gungsrechte an den Dienstliegenschaften weiter den Ressorts bzw. Nutzern obliegen. Allein das Handlungsrecht der Aufgabenwahrnehmung ist an die Liegenschaftsverwaltung {\"u}bergegangen. Die Untersuchung der Prinzipal-Agent-Verh{\"a}ltnisse teilt der Liegenschaftsverwaltung die Rolle eines Erf{\"u}llungsgehilfen des Wirtschaftssubjektes zu. Die monet{\"a}re Abwicklung der Ge-sch{\"a}fte zwischen dem Wirtschaftssubjekt und dem Hoheitstr{\"a}ger obliegt als zuarbeitende Organisationseinheit ohne eigene Entscheidungsgewalt der Liegenschaftsverwaltung. Aus diesen Thesen ergeben sich monet{\"a}re Handlungsm{\"o}glichkeiten, die in den Aufbau des Modells einfließen. Es r{\"u}ckt das Wirtschaftssubjekt als Entscheidungstr{\"a}ger {\"u}ber den Ressourceneinsatz in den Mittelpunkt der Betrachtung. Der Hoheitstr{\"a}ger ist hierbei nur der Forderungsberechtigte an das Wirtschaftssubjekt und die Liegenschaftsverwaltung dessen immobilienwirtschaftlicher Vertreter. Diese Konstellation ber{\"u}cksichtigend erfolgt dem Credo des NPM gem{\"a}ß die Beschreibung des Modells und des institutionellen Arrangements nach den g{\"a}ngigen Modellen aus der Privatwirtschaft. Anhand der Untersuchungsergebnisse wird eine Liegenschaftsverwaltung skizziert, welche einerseits den tats{\"a}chlichen betriebswirtschaftlichen Anforderungen der Immobilienwirtschaft und andererseits den Gegebenheiten des haushaltswirtschaftlichen Umfeldes der {\"o}ffentlichen Verwaltung gerecht werden kann. Das aufgebaute Realmodell dient gleichzeitig dem Vergleich mit dem bestehenden und in der Praxis angewandten Mieter-Vermieter-Modell als Idealmodell. Der Vergleich zeigt, dass sich aus der Untersuchung zivilrechtlicher Institutionen zwar kein schuldrechtliches, wohl aber ein dingliches Recht ableiten l{\"a}sst. Damit einher geht die Vermutung, dass es sich bei dem Mieter-Vermieter-Modell im staatlichen Bereich um einen Fall von Modellplatonismus handelt.}, subject = {Neues Steuerungsmodell}, language = {de} } @phdthesis{Jeremejewa, author = {Jeremejewa, Jelena}, title = {Der Erfahrung auf der Spur}, publisher = {Neofelis}, address = {Berlin}, isbn = {ISBN 978-3-95808-423-0}, doi = {10.52007/9783958084742}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230822-64180}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {428}, abstract = {Dieselbe Zeit, derselbe Raum - zwei, grundverschiedene Regisseure und damit Erfahrungswelten. Aleksandr Rastorguevs und Sergei Loznitsas Dokumentarfilme der 90er und 2000er Jahre sind politische, poetische, punktgenaue Interventionen in die Gegenwart der „kleinen Menschen". Das Buch widmet sich dokumentarfilmischen Meisterwerken, die methodisch Verdr{\"a}ngtes und {\"U}bersehenes, planm{\"a}ßig Vergessenes sichtbar machen - nach dem Krieg ist vor dem Krieg. {\"A}sthetik in ihrer sozial-, geschichts- und kulturwissenschaftlichen Relevanz. Im post- und kontrafaktischen Zeitalter des allgegenw{\"a}rtigen medialen {\"U}berflusses, inmitten der Fernseh-, YouTube- und virtuellen Realit{\"a}t, erf{\"u}llen, begr{\"u}nden, erm{\"o}glichen oder schlichtweg erk{\"a}mpfen die Filme und ihre Autoren verloren gegangene R{\"a}ume f{\"u}r Widerspr{\"u}che, Fragen, die mal in ihrer Ambivalenz, mal in ihrer spr{\"o}den Eindeutigkeit ihren Aussagewert haben. Wider die marginale Rezeption r{\"u}ckt die Publikation sie in den Raum der interdisziplin{\"a}ren wissenschaftlichen Forschung und stellt sie als gleichwertige Formen der Wissens- und Erfahrungsproduktion vor. Bei all ihrer Unterschiedlichkeit, katapultieren die Filme den Zuschauer in ebenjene bekannte, aber nicht erkannte, weil nicht gesehene, {\"u}bersehene, nicht wahrgenommene Hyperrealit{\"a}t ihrer Alltagswirklichkeit. Weder der Autor noch das Werk noch der Zuschauer sind aus dem jeweiligen historischen oder soziopolitischen Diktum herausl{\"o}sbar oder gar g{\"a}nzlich frei.}, subject = {Dokumentarfilm}, language = {de} } @article{AnsariTartaglioneKoenke, author = {Ansari, Meisam and Tartaglione, Fabiola and K{\"o}nke, Carsten}, title = {Experimental Validation of Dynamic Response of Small-Scale Metaconcrete Beams at Resonance Vibration}, series = {materials}, volume = {2023}, journal = {materials}, number = {volume 16, issue 14, article 5029}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/ma16145029}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230818-64154}, pages = {1 -- 17}, abstract = {Structures and their components experience substantially large vibration amplitudes at resonance, which can cause their failure. The scope of this study is the utilization of silicone-coated steel balls in concrete as damping aggregates to suppress the resonance vibration. The heavy steel cores oscillate with a frequency close to the resonance frequency of the structure. Due to the phase difference between the vibrations of the cores and the structure, the cores counteract the vibration of the structure. The core-coating inclusions are randomly distributed in concrete similar to standard aggregates. This mixture is referred to as metaconcrete. The main goal of this work is to validate the ability of the inclusions to suppress mechanical vibration through laboratory experiments. For this purpose, two small-scale metaconcrete beams were cast and tested. In a free vibration test, the metaconcrete beams exhibited a larger damping ratio compared to a similar beam cast from conventional concrete. The vibration amplitudes of the metaconcrete beams at resonance were measured with a frequency sweep test. In comparison with the conventional concrete beam, both metaconcrete beams demonstrated smaller vibration amplitudes. Both experiments verified an improvement in the dynamic response of the metaconcrete beams at resonance vibration.}, subject = {Beton}, language = {en} } @article{Coenen, author = {Coenen, Ekkehard}, title = {Anti-Gewalttrainings, Gewaltwissen und die institutionelle Erzeugung gewaltbefreiter Subjekte}, series = {Soziale Passagen}, volume = {2023}, journal = {Soziale Passagen}, publisher = {VS, Verl. f{\"u}r Sozialwissenschaften/GWV-Fachverlag}, address = {Wiesbaden}, doi = {10.1007/s12592-023-00453-9}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230720-64104}, pages = {1 -- 16}, abstract = {Dieser Beitrag fragt danach, wie Wissen {\"u}ber Gewalt in Anti-Gewalttrainings produziert, vermittelt und sozial wirkm{\"a}chtig wird. Auf Basis des kommunikativen Konstruktivismus werden diese Kurse als gewaltbezogene Institutionen begriffen, in denen eine Wissensordnung der Gewalt stabilisiert wird. Sie sollen Abweichungen von institutionalisierten Wirklichkeitsvorstellungen in Bezug auf Gewalt entgegenwirken. Dabei lassen sie sich als Selbsttechniken begreifen, durch welche die Kursteilnehmer*innen eine spezifische Subjektposition ein{\"u}ben, n{\"a}mlich die des gewaltbefreiten Subjekts. Vor diesem Hintergrund wird anschließend zwischen konditionalen und konzessiven Anti-Gewalttrainings unterschieden. Erstere wenden sich an Personen, die tats{\"a}chlich von der institutionalisierten Wirklichkeitsvorstellung abgewichen sind und somit gesellschaftlich als Gewaltt{\"a}ter*innen eingestuft werden, w{\"a}hrend Letztere auf eine Klientel zielen, die potenziell von den g{\"a}ngigen Normen abweichen k{\"o}nnte, obwohl noch keine Gewalt aufgetreten sein muss. Abschließend wird gezeigt, dass den Kursleiter*innen eine wichtige Rolle im Subjektivierungsprozess und der Wissenskommunikation {\"u}ber Gewalt zukommt. Neben Wissen {\"u}ber Gewalt werden durch sie auch Wertbindungen, Legitimationen und Weltbilder vermittelt.}, subject = {Gewalt}, language = {de} } @article{VogelArnoldVoelkeretal., author = {Vogel, Albert and Arnold, J{\"o}rg and Voelker, Conrad and Kornadt, Oliver}, title = {Data for sound pressure level prediction in lightweight constructions caused by structure-borne sound sources and their uncertainties}, series = {Data in Brief}, volume = {2023}, journal = {Data in Brief}, number = {Volume 48, June 2023, article 109292}, publisher = {Elsevier}, address = {Amsterdam}, doi = {10.1016/j.dib.2023.109292}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230719-64114}, pages = {1 -- 16}, abstract = {When predicting sound pressure levels induced by structure-borne sound sources and describing the sound propagation path through the building structure as exactly as possible, it is necessary to characterize the vibration behavior of the structure-borne sound sources. In this investigation, the characterization of structure-borne sound sources was performed using the two-stage method (TSM) described in EN 15657. Four different structure-borne sound sources were characterized and subsequently installed in a lightweight test stand. The resulting sound pressure levels in an adjacent receiving room were measured. In the second step, sound pressure levels were predicted according to EN 12354-5 based on the parameters of the structure-borne sound sources. Subsequently, the predicted and the measured sound pressure levels were compared to obtain reliable statements on the achievable accuracy when using source quantities determined by TSM with this prediction method.}, subject = {Bauakustik}, language = {en} } @phdthesis{Torreiter, author = {Torreiter, Laura}, title = {St{\"a}dtebauliche Aufwertung im Leipziger Osten: Migrant:innen als Pioniere beim Erwerb und der Sanierung von Baudenkmalen}, doi = {10.25643/bauhaus-universitaet.6408}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230717-64081}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {209}, abstract = {Anhand der st{\"a}dtebaulichen und sozialen Transformation des {\"o}stlichen Gr{\"u}nderzeitgebietes von Leipzig wird die Rolle von migrantischen Hausbesitzenden und in der Bausanierung T{\"a}tigen im Aufwertungsprozess untersucht. Der Zugang zum Gegenstand verbindet Fragen der Stadtsoziologie und der Denkmalforschung. Im sozialen Feld der Stadterneuerung wird die Revitalisierung des ehemals von Leerstand und R{\"u}ckbau betroffenen Baubestandes ausgehandelt. Die Positionen der Akteur:innen im Feld werden durch ihre Ausstattung mit {\"o}konomischem, aber auch sozialem und kulturellem Kapital bestimmt. Angeh{\"o}rige der Planungs- und Denkmalbeh{\"o}rden verf{\"u}gen {\"u}ber institutionalisiertes Kulturkapital und stehen damit Kleineigent{\"u}mer:innen, h{\"a}ufig Autodidakt:innen, gegen{\"u}ber. Baudenkmale k{\"o}nnen {\"u}ber ihre Funktion als Geldanlage und Wohnraum hinaus Status repr{\"a}sentieren und symbolisch angeeignet werden. Denkmalschutz dient dem {\"o}ffentlichen Interesse am Erhalt historischer Bausubstanz. Bei Sanierungen bestehen die Herausforderungen der Vereinbarkeit von Konservierung und Modernisierung, der Finanzierbarkeit f{\"u}r Eigent{\"u}mer:innen und der Sozialvertr{\"a}glichkeit f{\"u}r Bewohnende. Eine Darstellung der historischen Entwicklung des Leipziger Ostens zu Beginn der Analyse veranschaulicht die Abh{\"a}ngigkeit kultureller, sozialer und {\"o}konomischer Werte des Baubestandes vom jeweiligen gesellschaftlichen Kontext. Planerische Konzepte f{\"u}r das Gebiet zeigen, dass eine sozio{\"o}konomische Stabilisierung und Imageverbesserung erreicht werden sollte durch das Aufgreifen von Potentialen, wie den denkmalgesch{\"u}tzten Bauten, dem zuziehenden alternativen Milieu und migrantischer {\"O}konomie. Es wird deutlich, dass nach einer initialen Ans{\"a}ssigkeit von Pionier:innen die {\"o}ffentlichen Infrastrukturmaßnahmen und Denkmalausweisungen eine Inwertsetzung v. a. durch externe Anlegende vorbereiteten. Darauf aufbauend wurden anhand einer qualitativen Befragung die Erfahrungen von st{\"a}dtischen Mitarbeitenden, Fachleuten und im Quartier Engagierten denen von lokalen migrantischen Hausbesitzenden und im Bereich Sanierung T{\"a}tigen gegen{\"u}bergestellt. Migrant:innengruppen haben den Stadtraum in einer Phase vorherrschender Abwanderung durch die Er{\"o}ffnung von Gesch{\"a}ften und Institutionen sowie den Erwerb von Immobilien f{\"u}r sich erschlossen. Strukturelle Benachteiligungen, wie Diskriminierung auf dem Arbeitsmarkt, ihre Ans{\"a}ssigkeit im sozial stigmatisierten Gebiet sowie geringes {\"o}konomisches Kapital versuchten sie durch den Einsatz von sozialem Kapital auszugleichen. Sanierungen erfolgten mit hoher Eigenleistung und R{\"u}ckgriff auf private Netzwerke. Die Analyse des Erneuerungsprozesses im Leipziger Osten zeigt, dass in einer initialen Phase Pionier:innen von Planenden und der Denkmalpflege als essentiell f{\"u}r die Entwicklung angesehen wurden. G{\"u}nstige Instandsetzungen durch Kleineigent{\"u}mer:innen wurden akzeptiert, um Geb{\"a}ude vor weiterem Verfall zu bewahren. Mit der zunehmenden Forderung nach Verwendung hochwertiger Materialen werden die Sanierungsleistungen nach {\"a}sthetischen und letztlich {\"o}konomischen Kriterien bewertet. Gegen{\"u}ber sozialen Folgen einer Aufwertung von Bausubstanz l{\"a}sst sich eine unkritische Haltung der Denkmalpflege erkennen. Bei der Vermarktung der Best{\"a}nde durch professionelle Investierende findet die Sozialgeschichte des Stadtteils wenig Ber{\"u}cksichtigung, positiv besetzte Merkmale des Quartiers, wie Multikulturalit{\"a}t werden selektiv aufgegriffen. Der Anteil migrantischer Akteur:innen an der Entwicklung wird durch die {\"O}ffentlichkeit unzureichend anerkannt. Auch die Wertsch{\"a}tzung von Planenden und im Quartier Engagierten erfolgt v. a. anhand des {\"o}konomischen Status. Hohe Erwartungen an die Gesch{\"a}ftsstruktur und die Erscheinung des Straßenbildes k{\"o}nnen nicht erf{\"u}llt werden. Migrantische Hausbesitzende und im Bereich Sanierung T{\"a}tige ben{\"o}tigen f{\"u}r die Auseinandersetzung mit der Denkmalpflege kulturelles Kapital. Sie erkennen die Bedeutung des historischen Baubestandes f{\"u}r die Stadt und die Arbeit der Institution an, kritisieren jedoch Sanierungsauflagen bzw. Mitarbeitende der Denkmalpflege und k{\"o}nnen sich z. T. gegen diese behaupten. Lokale migrantische Kleineigent{\"u}mer:innen leisten durch ihre Quartiersbindung einen Beitrag zur {\"o}konomischen und sozialen Stabilisierung. Mit ihrer Aufstiegsorientierung f{\"o}rdern sie in der Vermietungspraxis jedoch nur bedingt die Integration anderer Migrant:innen und grenzen sich von statusniedrigen Gruppen im Quartier ab. Migrantische Hausbesitzende und Unternehmende nehmen sich selbst als erfolgreiche Vorreitende in einer heterogener werdenden ostdeutschen Stadtgesellschaft wahr. Sie erkannten fr{\"u}hzeitig das Entwicklungspotential und geh{\"o}ren zu den Initiierenden und Profitierenden der Inwertsetzung.}, subject = {Leipzig}, language = {de} } @phdthesis{Mthunzi, author = {Mthunzi, Everett}, title = {Interactive Surface Environments: Design and Implementation}, doi = {10.25643/bauhaus-universitaet.6406}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230704-64065}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {128}, abstract = {This dissertation presents three studies on the design and implementation of interactive surface environments. It puts forward approaches to engineering interactive surface prototypes using prevailing methodologies and technologies. The scholarly findings from each study have been condensed into academic manuscripts, which are conferred herewith. The first study identifies a communication gap between engineers of interactive surface systems (i.e., originators of concepts) and future developers. To bridge the gap, it explores a UML-based framework to establish a formal syntax for modeling hardware, middleware, and software of interactive surface prototypes. The proposed framework targets models-as-end-products, towards enabling a shared view of research prototypes thereby facilitating dialogue between concept originators and future developers. The second study positions itself to support developers with an open-source solution for exploiting 3D point clouds for interactive tabletop applications using CPU architectures. Given dense 3D point-cloud representations of tabletop environments, the study aims toward mitigating high computational effort by segmenting candidate interaction regions as a preprocessing step. The study contributes a robust open-source solution for reducing computational costs when leveraging 3D point clouds for interactive tabletop applications. The solution itself is flexible and adaptable to variable interactive surface applications. The third study contributes an archetypal concept for integrating mobile devices as active components in augmented tabletop surfaces. With emphasis on transparent development trails, the study demonstrates the utility of the open-source tool developed in the second study. In addition to leveraging 3D point clouds for real-time interaction, the research considers recent advances in computer vision and wireless communication to realize a modern, interactive tabletop application. A robust strategy that combines spatial augmented reality, point-cloud-based depth perception, CNN-based object detection, and Bluetooth communication is put forward. In addition to seamless communication between adhoc mobile devices and interactive tabletop systems, the archetypal concept demonstrates the benefits of preprocessing point clouds by segmenting candidate interaction regions, as suggested in the second study. Collectively, the studies presented in this dissertation contribute; 1—bridging the gap between originators of interactive surface concepts and future developers, 2— promoting the exploration of 3D point clouds for interactive surface applications using CPU-based architectures, and 3—leveraging 3D point clouds together with emerging CNN-based object detection, and Bluetooth communication technologies to advance existing surface interaction concepts.}, subject = {Mensch-Maschiene-Kommunikation}, language = {en} } @misc{KleineCalbetiElias, author = {Kleine, Aya and Calbet i Elias, Laura}, title = {Gemeinwohlorientierte Bodennutzung in Kooperation. Ein Handlungsleitfaden f{\"u}r {\"o}ffentlich-zivielgesellschaftliche Partnerschaften}, editor = {Calbet i Elias, Laura and Vollmer, Lisa and Kleine, Aya}, edition = {Erste Auflage}, doi = {10.25643/bauhaus-universitaet.6398}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230609-63988}, pages = {56}, abstract = {Dieser Handlungsleitfaden m{\"o}chte die gemeinwohlorientierte Vergabe von R{\"a}umen und Fl{\"a}chen an zivilgesellschaftliche Gruppen st{\"a}rken. Er ist als Inspirationssammlung zu verstehen, die den Weg zu neuen Kooperationen zwischen {\"o}ffentlichen und zivilgesellschaftlichen Akteuren erleichtern soll. Wissenswertesund inspirierende Beispiele bieten eine Starthilfe, um nicht nur einzelne stadtr{\"a}umliche Experimente zu wagen, sondern die gemeinwohlorientierte Fl{\"a}chen- und Raumvergabe an zivilgesellschaftliche Gruppen kommunal zu verankern. Denn {\"o}ffentliche Liegenschaften sind nach vielen Jahren der Privatisierung eine rare Ressource, die umso mehr dem Gemeinwohl dienen sollte.}, subject = {Liegenschaftspolitik}, language = {de} } @phdthesis{Ashour, author = {Ashour, Mohammed}, title = {Electromechanics and Hydrodynamics of Single Vesicles and Vesicle Doublet Using Phase-Field Isogeometric Analysis}, doi = {10.25643/bauhaus-universitaet.6400}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230628-64003}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {175}, abstract = {Biomembranes are selectively permeable barriers that separate the internal components of the cell from its surroundings. They have remarkable mechanical behavior which is characterized by many phenomena, but most noticeably their fluid-like in-plane behavior and solid-like out-of-plane behavior. Vesicles have been studied in the context of discrete models, such as Molecular Dynamics, Monte Carlo methods, Dissipative Particle Dynamics, and Brownian Dynamics. Those methods, however, tend to have high computational costs, which limited their uses for studying atomistic details. In order to broaden the scope of this research, we resort to the continuum models, where the atomistic details of the vesicles are neglected, and the focus shifts to the overall morphological evolution. Under the umbrella of continuum models, vesicles morphology has been studied extensively. However, most of those studies were limited to the mechanical response of vesicles by considering only the bending energy and aiming for the solution by minimizing the total energy of the system. Most of the literature is divided between two geometrical representation methods; the sharp interface methods and the diffusive interface methods. Both of those methods track the boundaries and interfaces implicitly. In this research, we focus our attention on solving two non-trivial problems. In the first one, we study a constrained Willmore problem coupled with an electrical field, and in the second one, we investigate the hydrodynamics of a vesicle doublet suspended in an external viscous fluid flow. For the first problem, we solve a constrained Willmore problem coupled with an electrical field using isogeometric analysis to study the morphological evolution of vesicles subjected to static electrical fields. The model comprises two phases, the lipid bilayer, and the electrolyte. This two-phase problem is modeled using the phase-field method, which is a subclass of the diffusive interface methods mentioned earlier. The bending, flexoelectric, and dielectric energies of the model are reformulated using the phase-field parameter. A modified Augmented-Lagrangian (ALM) approach was used to satisfy the constraints while maintaining numerical stability and a relatively large time step. This approach guarantees the satisfaction of the constraints at each time step over the entire temporal domain. In the second problem, we study the hydrodynamics of vesicle doublet suspended in an external viscous fluid flow. Vesicles in this part of the research are also modeled using the phase-field model. The bending energy and energies associated with enforcing the global volume and area are considered. In addition, the local inextensibility condition is ensured by introducing an additional equation to the system. To prevent the vesicles from numerically overlapping, we deploy an interaction energy definition to maintain a short-range repulsion between the vesicles. The fluid flow is modeled using the incompressible Navier-Stokes equations and the vesicle evolution in time is modeled using two advection equations describing the process of advecting each vesicle by the fluid flow. To overcome the velocity-pressure saddle point system, we apply the Residual-Based Variational MultiScale (RBVMS) method to the Navier-Stokes equations and solve the coupled systems using isogeometric analysis. We study vesicle doublet hydrodynamics in shear flow, planar extensional flow, and parabolic flow under various configurations and boundary conditions. The results reveal several interesting points about the electrodynamics and hydrodynamics responses of single vesicles and vesicle doublets. But first, it can be seen that isogeometric analysis as a numerical tool has the ability to model and solve 4th-order PDEs in a primal variational framework at extreme efficiency and accuracy due to the abilities embedded within the NURBS functions without the need to reduce the order of the PDE by creating an intermediate environment. Refinement whether by knot insertion, order increasing or both is far easier to obtain than traditional mesh-based methods. Given the wide variety of phenomena in natural sciences and engineering that are mathematically modeled by high-order PDEs, the isogeometric analysis is among the most robust methods to address such problems as the basis functions can easily attain high global continuity. On the applicational side, we study the vesicle morphological evolution based on the electromechanical liquid-crystal model in 3D settings. This model describing the evolution of vesicles is composed of time-dependent, highly nonlinear, high-order PDEs, which are nontrivial to solve. Solving this problem requires robust numerical methods, such as isogeometric analysis. We concluded that the vesicle tends to deform under increasing magnitudes of electric fields from the original sphere shape to an oblate-like shape. This evolution is affected by many factors and requires fine-tuning of several parameters, mainly the regularization parameter which controls the thickness of the diffusive interface width. But it is most affected by the method used for enforcing the constraints. The penalty method in presence of an electrical field tends to lock on the initial phase-field and prevent any evolution while a modified version of the ALM has proven to be sufficiently stable and accurate to let the phase-field evolve while satisfying the constraints over time at each time step. We show additionally the effect of including the flexoelectric nature of the Biomembranes in the computation and how it affects the shape evolution as well as the effect of having different conductivity ratios. All the examples were solved based on a staggered scheme, which reduces the computational cost significantly. For the second part of the research, we consider vesicle doublet suspended in a shear flow, in a planar extensional flow, and in a parabolic flow. When the vesicle doublet is suspended in a shear flow, it can either slip past each other or slide on top of each other based on the value of the vertical displacement, that is the vertical distance between the center of masses between the two vesicles, and the velocity profile applied. When the vesicle doublet is suspended in a planar extensional flow in a configuration that resembles a junction, the time in which both vesicles separate depends largely on the value of the vertical displacement after displacing as much fluid from between the two vesicles. However, when the vesicles are suspended in a tubular channel with a parabolic fluid flow, they develop a parachute-like shape upon converging towards each other before exiting the computational domain from the predetermined outlets. This shape however is affected largely by the height of the tubular channel in which the vesicle is suspended. The velocity essential boundary conditions are imposed weakly and strongly. The weak implementation of the boundary conditions was used when the velocity profile was defined on the entire boundary, while the strong implementation was used when the velocity profile was defined on a part of the boundary. The strong implementation of the essential boundary conditions was done by selectively applying it to the predetermined set of elements in a parallel-based code. This allowed us to simulate vesicle hydrodynamics in a computational domain with multiple inlets and outlets. We also investigate the hydrodynamics of oblate-like shape vesicles in a parabolic flow. This work has been done in 2D configuration because of the immense computational load resulting from a large number of degrees of freedom, but we are actively seeking to expand it to 3D settings and test a broader set of parameters and geometrical configurations.}, subject = {Isogeometrische Analyse}, language = {en} } @phdthesis{Ajjour, author = {Ajjour, Yamen}, title = {Addressing Controversial Topics in Search Engines}, doi = {10.25643/bauhaus-universitaet.6403}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230626-64037}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {133}, abstract = {Search engines are very good at answering queries that look for facts. Still, information needs that concern forming opinions on a controversial topic or making a decision remain a challenge for search engines. Since they are optimized to retrieve satisfying answers, search engines might emphasize a specific stance on a controversial topic in their ranking, amplifying bias in society in an undesired way. Argument retrieval systems support users in forming opinions about controversial topics by retrieving arguments for a given query. In this thesis, we address challenges in argument retrieval systems that concern integrating them in search engines, developing generalizable argument mining approaches, and enabling frame-guided delivery of arguments. Adapting argument retrieval systems to search engines should start by identifying and analyzing information needs that look for arguments. To identify questions that look for arguments we develop a two-step annotation scheme that first identifies whether the context of a question is controversial, and if so, assigns it one of several question types: factual, method, and argumentative. Using this annotation scheme, we create a question dataset from the logs of a major search engine and use it to analyze the characteristics of argumentative questions. The analysis shows that the proportion of argumentative questions on controversial topics is substantial and that they mainly ask for reasons and predictions. The dataset is further used to develop a classifier to uniquely map questions to the question types, reaching a convincing F1-score of 0.78. While the web offers an invaluable source of argumentative content to respond to argumentative questions, it is characterized by multiple genres (e.g., news articles and social fora). Exploiting the web as a source of arguments relies on developing argument mining approaches that generalize over genre. To this end, we approach the problem of how to extract argument units in a genre-robust way. Our experiments on argument unit segmentation show that transfer across genres is rather hard to achieve using existing sequence-to-sequence models. Another property of text which argument mining approaches should generalize over is topic. Since new topics appear daily on which argument mining approaches are not trained, argument mining approaches should be developed in a topic-generalizable way. Towards this goal, we analyze the coverage of 31 argument corpora across topics using three topic ontologies. The analysis shows that the topics covered by existing argument corpora are biased toward a small subset of easily accessible controversial topics, hinting at the inability of existing approaches to generalize across topics. In addition to corpus construction standards, fostering topic generalizability requires a careful formulation of argument mining tasks. Same side stance classification is a reformulation of stance classification that makes it less dependent on the topic. First experiments on this task show promising results in generalizing across topics. To be effective at persuading their audience, users of an argument retrieval system should select arguments from the retrieved results based on what frame they emphasize of a controversial topic. An open challenge is to develop an approach to identify the frames of an argument. To this end, we define a frame as a subset of arguments that share an aspect. We operationalize this model via an approach that identifies and removes the topic of arguments before clustering them into frames. We evaluate the approach on a dataset that covers 12,326 frames and show that identifying the topic of an argument and removing it helps to identify its frames.}, subject = {Informatik}, language = {en} } @misc{Lenz, type = {Master Thesis}, author = {Lenz, Juliane}, title = {„Baus{\"u}nde" oder Denkmal? Zur Diskussion {\"u}ber den Umgang mit verschm{\"a}hten Bauwerken}, doi = {10.25643/bauhaus-universitaet.6397}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230606-63979}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {187}, abstract = {F{\"u}r die einen also „Baus{\"u}nde", f{\"u}r die anderen ein erhaltenswertes Bauwerk - wie geht man damit um? F{\"u}r wen gilt wann etwas als „Baus{\"u}nde" und wann als erhaltenswert, welche Ziele werden damit verfolgt und Konzepte aufgezeigt? Inwieweit spielen beispielsweise Aspekte wie {\"A}sthetik, Funktionalit{\"a}t oder der allgemeine gesellschaftliche Kontext bzw. Wandel sowie das jeweils aktuelle und bauzeitliche planerische Leitbild bzw. Verst{\"a}ndnis eine Rolle bei der Verwendung des Begriffs und den Umgang f{\"u}r konkrete Bauwerke? Und inwieweit steht der Erhaltungswert bzw. eine Denkmalw{\"u}rdigkeit damit im Verh{\"a}ltnis und wie kann damit planerisch umgegangen werden? Der Diskussion {\"u}ber den Umgang mit verschm{\"a}hten Bauwerken will sich die vorliegende Abschlussarbeit n{\"a}hern. Als Bauwerke werden hierbei sowohl Geb{\"a}ude und Pl{\"a}tze als auch zur Erinnerung gesetzte Objekte wie Statuen verstanden.}, subject = {Denkmalpflege}, language = {de} } @article{AbdelnourZabel, author = {Abdelnour, Mena and Zabel, Volkmar}, title = {Modal identification of structures with a dynamic behaviour characterised by global and local modes at close frequencies}, series = {Acta Mechanica}, volume = {2023}, journal = {Acta Mechanica}, publisher = {Springer}, address = {Wien}, doi = {10.1007/s00707-023-03598-z}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230525-63822}, pages = {1 -- 21}, abstract = {Identification of modal parameters of a space frame structure is a complex assignment due to a large number of degrees of freedom, close natural frequencies, and different vibrating mechanisms. Research has been carried out on the modal identification of rather simple truss structures. So far, less attention has been given to complex three-dimensional truss structures. This work develops a vibration-based methodology for determining modal information of three-dimensional space truss structures. The method uses a relatively complex space truss structure for its verification. Numerical modelling of the system gives modal information about the expected vibration behaviour. The identification process involves closely spaced modes that are characterised by local and global vibration mechanisms. To distinguish between local and global vibrations of the system, modal strain energies are used as an indicator. The experimental validation, which incorporated a modal analysis employing the stochastic subspace identification method, has confirmed that considering relatively high model orders is required to identify specific mode shapes. Especially in the case of the determination of local deformation modes of space truss members, higher model orders have to be taken into account than in the modal identification of most other types of structures.}, subject = {Fachwerkbau}, language = {en} } @article{KreskowskiRendleFroehlich, author = {Kreskowski, Adrian and Rendle, Gareth and Fr{\"o}hlich, Bernd}, title = {Efficient Direct Isosurface Rasterization of Scalar Volumes}, series = {Computer Graphics Forum}, volume = {2022}, journal = {Computer Graphics Forum}, number = {Volume 4, Issue 7}, publisher = {Wiley Blackwell}, address = {Oxford}, doi = {10.1111/cgf.14670}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230525-63835}, pages = {215 -- 226}, abstract = {In this paper we propose a novel and efficient rasterization-based approach for direct rendering of isosurfaces. Our method exploits the capabilities of task and mesh shader pipelines to identify subvolumes containing potentially visible isosurface geometry, and to efficiently extract primitives which are consumed on the fly by the rasterizer. As a result, our approach requires little preprocessing and negligible additional memory. Direct isosurface rasterization is competitive in terms of rendering performance when compared with ray-marching-based approaches, and significantly outperforms them for increasing resolution in most situations. Since our approach is entirely rasterization based, it affords straightforward integration into existing rendering pipelines, while allowing the use of modern graphics hardware features, such as multi-view stereo for efficient rendering of stereoscopic image pairs for geometry-bound applications. Direct isosurface rasterization is suitable for applications where isosurface geometry is highly variable, such as interactive analysis scenarios for static and dynamic data sets that require frequent isovalue adjustment.}, subject = {Rendering}, language = {en} } @article{SanderWeissermel, author = {Sander, Hendrik and Weißermel, S{\"o}ren}, title = {Urban Heat Transition in Berlin: Corporate Strategies, Political Conflicts, and Just Solutions}, series = {Urban Planning}, volume = {2023}, journal = {Urban Planning}, number = {Volume 8, No 1}, publisher = {Cogitatio Press}, address = {Lissabon}, doi = {10.17645/up.v8i1.6178}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63845}, pages = {361 -- 371}, abstract = {In the field of urban climate policy, heat production and demand are key sectors for achieving a sustainable city. Heat production has to shift from fossil to renewable energies, and the heat demand of most buildings has to be reduced significantly via building retrofits. However, analyses of heat transition still lack its contextualization within entangled urban politico-economic processes and materialities and require critical socio-theoretical examination. Asking about the embeddedness of heat transition within social relations and its implications for social justice issues, this article discusses the challenges and opportunities of heat transition, taking Berlin as an example. It uses an urban political ecology perspective to analyze the materialities of Berlin's heating-housing nexus, its politico-economic context, implications for relations of inequality and power, and its contested strategies. The empirical analysis identifies major disputes about the future trajectory of heat production and about the distribution of retrofit costs. Using our conceptual approach, we discuss these empirical findings against the idea of a more just heat transition. For this purpose, we discuss three policy proposals regarding cost distribution, urban heat planning, and remunicipalization of heat utilities. We argue that this conceptual approach provides huge benefits for debates around heat transition and, more generally, energy justice and just transitions.}, subject = {Berlin}, language = {en} } @misc{EckardtAlSadaty, author = {Eckardt, Frank and AlSadaty, Aliaa}, title = {Urban Heritage in Transformation: Physical and Non-Physical Dimensions of Changing Contexts}, series = {Urban Planning}, volume = {2023}, journal = {Urban Planning}, number = {Volume 8, No. 1}, publisher = {Cogitatio Press}, address = {Lissabon}, doi = {10.17645/up.v8i1.6633}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63850}, pages = {4}, abstract = {Urban heritage is at the core of the process of many changes observable in the cities today. The pace of urban change in heritage contexts, however, differs widely across the globe. In some areas, it goes slowly, in others it is astonishingly rapid. In some cases, change is coupled with risks of erosion of heritage and urban areas of value and in others change is synonymous with prosperity and positive impacts. Change in urban heritage areas is not only confined to the physical and tangible aspects, but needs to be regarded as mirroring changes related socio-political practices, economic implications, and cultural impacts. In this regard, the present thematic issue looks at various patterns of the interrelationship between heritage and urban change from both the physical and the non-physical perspectives. This editorial presents the topic of urban heritage and patterns of physical and non-physical transformation in urban heritage contexts and introduces the thematic issue "Urban Heritage and Patterns of Change: Spatial Practices of Physical and Non-Physical Transformation."}, subject = {Stadt}, language = {en} } @article{Bockelmann, author = {Bockelmann, Leo}, title = {Impacts of Change: Analysing the Perception of Industrial Heritage in the Vogtland Region}, series = {Urban Planning}, volume = {2023}, journal = {Urban Planning}, number = {Volume 8, No 1}, publisher = {Cogitatio Press}, address = {Lissabon}, doi = {10.17645/up.v8i1.6025}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63814}, pages = {30 -- 38}, abstract = {Beyond metropolitan areas, many peripheral regions and their cities in Europe have, in manifold ways, been significantly shaped by industrialisation. In the context of the relocation of industrial production to other countries over the last decades, the question has been raised as to the role this heritage can play in futural regional development as well as the potential local identification with this history. Hence, this article seeks to analyse the perception of the industrial heritage in the Vogtland region, located alongside the border of three German federal states and the Czech Republic. It inquires as to the perception of the industrial heritage by the local population and related potential future narrations. Based on spontaneous and explorative interviews with local people as an empirical base, a discrepancy between the perception of the tangible and intangible dimensions of the industrial heritage can be observed. On the one hand, the tangible heritage like older factories and production complexes are seen as a functional legacy and an "eyesore" narrative is attributed to them. On the other hand, people often reference the personal and familial connection to the industry and highlight its importance for the historical development and the wealth of the region. But these positive associations are mainly limited to the intangible dimension and are disconnected from the material artefacts of industrial production.}, subject = {Vogtland}, language = {en} } @article{DamirMeyerAziz, author = {Damir, Mirhan and Meyer, Martin and Aziz, Hellen}, title = {Patterns of Detachment: Spatial Transformations of the Phosphate Industry in el-Quseir, Egypt}, series = {Urban Planning}, volume = {2023}, journal = {Urban Planning}, number = {Volume 8, No 1}, publisher = {Cogitatio Press}, address = {Lissabon}, doi = {10.17645/up.v8i1.6053}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63805}, pages = {1 -- 16}, abstract = {The establishment of phosphate mines and processing plants by Italian entrepreneurs in el-Quseir in 1912 revitalized a town that had faced a steady decline after the opening of the Suez Canal and re-linked it to the world economy. To this day, the now defunct industrial site occupies a large section of physical el-Quseir and plays a key role in its identity. In this article, we explore the impact of the company's successive industrialization and deindustrialization based on archival research, interviews, and mapping. By tracing physical changes on-site and in the city of el-Quseir from the founding of its phosphate industry until today, as well as the historical and current interactions of citizens with the industrial facilities, we hope to better understand the "cluster value" of the industrial plant in quotidian life and the effect of the vacuum left behind after the termination of production. As machinery and buildings are slowly eroding in the absence of expressed interest by the former Italian and current Egyptian owners, we aim to discuss the relationship between the citizens and their el-Quseir phosphate plant as a crucial element of its heritage value at the local level.}, subject = {{\"A}gypten}, language = {en} } @article{GrimmeKollakidouSonderskovZarpetal., author = {Grimme, Sophie Alice and Kollakidou, Avgi and S{\o}nderskov Zarp, Christian and Hornecker, Eva and Kr{\"u}ger, Norbert and Graf, Phillip and Marchetti, Emanuela}, title = {Floor Cleaners as Helper Pets: Projecting Assistive Robots' Agency on Zoomorphic Affordances}, series = {SN Computer Science}, volume = {2023}, journal = {SN Computer Science}, number = {volume 4, article 372}, publisher = {Springer}, address = {Singapur}, doi = {10.1007/s42979-023-01769-2}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63796}, pages = {1 -- 14}, abstract = {Care of ageing adults has become a dominant field of application for assistive robot technologies, promising support for ageing adults residing in care homes and staff, in dealing with practical routine tasks and providing social and emotional relieve. A time consuming and human intensive necessity is the maintenance of high hygiene quality in care homes. Robotic vacuum cleaners have been proven effective for doing the job elsewhere, but—in the context of care homes—are counterproductive for residents' well-being and do not get accepted. This is because people with dementia manifest their agency in more implicit and emotional ways, while making sense of the world around them. Starting from these premises, we explored how a zoomorphic designed vacuum cleaner could better accommodate the sensemaking of people with dementia. Our design reconceptualises robotic vacuum cleaners as a cat-like robot, referring to a playful behaviour and appearance to communicate a non-threatening and familiar role model. Data from an observational study shows that residents responded positively to our prototype, as most of them engaged playfully with it as if it was a pet or a cat-like toy, for example luring it with gestures. Some residents simply ignored the robot, indicating that it was not perceived as frightening or annoying. The level of activity influenced reactions; residents ignored our prototype if busy with other occupations, which proves that it did not cause significant disturbance. We further report results from focus group sessions with formal and informal caregivers who discussed a video prototype of our robot. Caregivers encouraged us to enhance the animal like characteristics (in behaviour and materiality) even further to result in richer interactions and provoke haptic pleasure but also pointed out that residents should not mistake the robot for a real cat.}, subject = {Alter}, language = {en} } @book{OPUS4-6378, title = {Corona und die Stadt. Kommunale Beteiligungskultur in der Krise?}, editor = {Brokow-Loga, Anton}, publisher = {transcript}, address = {Bielefeld}, isbn = {978-3-8394-6548-6}, doi = {10.14361/9783839465486}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63785}, publisher = {Bauhaus-Universit{\"a}t Weimar}, pages = {260}, abstract = {Die Corona-Krise stellt das st{\"a}dtische Zusammenleben auf eine harte Probe. Nicht nur sozialer Austausch, Kultur und Verkehr, sondern auch die kommunale Demokratie ist massiv beeinflusst. Wer kann in der Krise noch mitsprechen? Und wie ver{\"a}ndert sie das Zusammenspiel von Verwaltung, Politik und Zivilgesellschaft? Die Beitr{\"a}ger*innen untersuchen anhand von Fallstudien die Auswirkungen der Krise auf die kommunale Beteiligungskultur. Sie fragen mit interdisziplin{\"a}rem Blick nach der kommunalen Krisenbew{\"a}ltigung und erfolgreichen Governance-Strukturen im Kontext multipler Krisen. Ihr Ansatz der kritischen Urbanistik versteht sich dabei als Einladung zur Reflexion, Debatte und alternativen Praxis.}, subject = {Stadt}, language = {de} } @article{AbrahamczykUzair, author = {Abrahamczyk, Lars and Uzair, Aanis}, title = {On the use of climate models for estimating the non-stationary characteristic values of climatic actions in civil engineering practice}, series = {Frontiers in Built Environment}, volume = {2023}, journal = {Frontiers in Built Environment}, number = {volume 9, article 1108328}, publisher = {Frontier Media}, address = {Lausanne}, doi = {10.3389/fbuil.2023.1108328}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63751}, pages = {1 -- 9}, abstract = {The characteristic values of climatic actions in current structural design codes are based on a specified probability of exceedance during the design working life of a structure. These values are traditionally determined from the past observation data under a stationary climate assumption. However, this assumption becomes invalid in the context of climate change, where the frequency and intensity of climatic extremes varies with respect to time. This paper presents a methodology to calculate the non-stationary characteristic values using state of the art climate model projections. The non-stationary characteristic values are calculated in compliance with the requirements of structural design codes by forming quasi-stationary windows of the entire bias-corrected climate model data. Three approaches for the calculation of non-stationary characteristic values considering the design working life of a structure are compared and their consequences on exceedance probability are discussed.}, subject = {Klima{\"a}nderung}, language = {en} } @article{WiegandOsburg, author = {Wiegand, Torben and Osburg, Andrea}, title = {Synthesis, Curing and Thermal Behavior of Amine Hardeners from Potentially Renewable Sources}, series = {Polymers}, volume = {2023}, journal = {Polymers}, number = {volume 15, issue 4, article 990}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/polym15040990}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63745}, pages = {1 -- 12}, abstract = {Research into bio-based epoxy resins has intensified in recent decades. Here, it is of great importance to use raw materials whose use does not compete with food production. In addition, the performance of the newly developed materials should be comparable to that of conventional products. Possible starting materials are lignin degradation products, such as vanillin and syringaldehyde, for which new synthesis routes to the desired products must be found and their properties determined. In this article, the first synthesis of two amine hardeners, starting with vanillin and syringaldehyde, using the Smiles rearrangement reaction is reported. The amine hardeners were mixed with bisphenol A diglycidyl ether, and the curing was compared to isophorone diamine, 4-4′-diaminodiphenyl sulfone, and 4-Aminonbenzylamine by means of differential scanning calorimetry. It was found that the two amines prepared are cold-curing. As TG-MS studies showed, the thermal stability of at least one of the polymers prepared with the potentially bio-based amines is comparable to that of the polymer prepared with isophorone diamine, and similar degradation products are formed during pyrolysis.}, subject = {Epoxide}, language = {en} } @article{AlemuHabteLahmeretal., author = {Alemu, Yohannes L. and Habte, Bedilu and Lahmer, Tom and Urgessa, Girum}, title = {Topologically preoptimized ground structure (TPOGS) for the optimization of 3D RC buildings}, series = {Asian Journal of Civil Engineering}, volume = {2023}, journal = {Asian Journal of Civil Engineering}, publisher = {Springer International Publishing}, address = {Cham}, doi = {10.1007/s42107-023-00640-2}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230517-63677}, pages = {1 -- 11}, abstract = {As an optimization that starts from a randomly selected structure generally does not guarantee reasonable optimality, the use of a systemic approach, named the ground structure, is widely accepted in steel-made truss and frame structural design. However, in the case of reinforced concrete (RC) structural optimization, because of the orthogonal orientation of structural members, randomly chosen or architect-sketched framing is used. Such a one-time fixed layout trend, in addition to its lack of a systemic approach, does not necessarily guarantee optimality. In this study, an approach for generating a candidate ground structure to be used for cost or weight minimization of 3D RC building structures with included slabs is developed. A multiobjective function at the floor optimization stage and a single objective function at the frame optimization stage are considered. A particle swarm optimization (PSO) method is employed for selecting the optimal ground structure. This method enables generating a simple, yet potential, real-world representation of topologically preoptimized ground structure while both structural and main architectural requirements are considered. This is supported by a case study for different floor domain sizes.}, subject = {Bodenmechanik}, language = {en} } @article{GuoAlajlanZhuangetal., author = {Guo, Hongwei and Alajlan, Naif and Zhuang, Xiaoying and Rabczuk, Timon}, title = {Physics-informed deep learning for three-dimensional transient heat transfer analysis of functionally graded materials}, series = {Computational Mechanics}, volume = {2023}, journal = {Computational Mechanics}, publisher = {Springer}, address = {Berlin}, doi = {10.1007/s00466-023-02287-x}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230517-63666}, pages = {1 -- 12}, abstract = {We present a physics-informed deep learning model for the transient heat transfer analysis of three-dimensional functionally graded materials (FGMs) employing a Runge-Kutta discrete time scheme. Firstly, the governing equation, associated boundary conditions and the initial condition for transient heat transfer analysis of FGMs with exponential material variations are presented. Then, the deep collocation method with the Runge-Kutta integration scheme for transient analysis is introduced. The prior physics that helps to generalize the physics-informed deep learning model is introduced by constraining the temperature variable with discrete time schemes and initial/boundary conditions. Further the fitted activation functions suitable for dynamic analysis are presented. Finally, we validate our approach through several numerical examples on FGMs with irregular shapes and a variety of boundary conditions. From numerical experiments, the predicted results with PIDL demonstrate well agreement with analytical solutions and other numerical methods in predicting of both temperature and flux distributions and can be adaptive to transient analysis of FGMs with different shapes, which can be the promising surrogate model in transient dynamic analysis.}, subject = {W{\"a}rme{\"u}bergang}, language = {en} } @article{RabczukZhuangOterkus, author = {Rabczuk, Timon and Zhuang, Xiaoying and Oterkus, Erkan}, title = {Editorial: Computational modeling based on nonlocal theory}, series = {Engineering with Computers}, volume = {2023}, journal = {Engineering with Computers}, number = {Volume 39, issue 3}, publisher = {Springer}, address = {London}, doi = {https://doi.org/10.1007/s00366-022-01775-7}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230517-63658}, pages = {1}, abstract = {Nonlocal theories concern the interaction of objects, which are separated in space. Classical examples are Coulomb's law or Newton's law of universal gravitation. They had signficiant impact in physics and engineering. One classical application in mechanics is the failure of quasi-brittle materials. While local models lead to an ill-posed boundary value problem and associated mesh dependent results, nonlocal models guarantee the well-posedness and are furthermore relatively easy to implement into commercial computational software.}, subject = {Computersimulation}, language = {en} } @inproceedings{BaronMandavereCheruiyot, author = {Baron, Nicole and Mandavere, Melody and Cheruiyot, Roselyne}, title = {SE/ NPO Ecosystems and urban Governance in Johannesburg}, series = {ISTR, Fifteenth International Conference, Montreal, Canada}, booktitle = {ISTR, Fifteenth International Conference, Montreal, Canada}, doi = {10.25643/bauhaus-universitaet.6364}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230517-63643}, pages = {47}, abstract = {This paper presents initial findings from the empirical analysis of community based social enterprise (SE) and non-profit organisation (NPO) ecosystems in Johannesburg. SEs and NPOs are widely recognised as contributors to the resilience of marginalised urban communities. However, the connection between these organisations , urban governance, and community resilience has not yet been sufficiently understood , particularly in African urban contexts. The 'Resilient Urban Communities' project focuses on Johannesburg as a case study to shed light on this under-researched topic. The key to exploring it is understanding SEs and NPOs as providers of public services, job creators, and promoters of good governance, all of which contribute to community resilience. Using this premise as a starting point, this paper investigates ecosystem conditions with a particular focus on state-civil society partnerships. Empirical data was generated through semi-struc-tured interviews and analysed with a grounded theory approach. Preliminary results of this ongoing research reveal that urban geography is a relevant ecosystem factor for SEs and NPOs from marginalised communities. We also suggest that co-production could be an opportunity for growth within the investigated state-civil society partnership.}, subject = {S{\"u}dafrika}, language = {en} } @inproceedings{SchwendnerVoellmeckeHoetal., author = {Schwendner, Sascha and V{\"o}llmecke, Lars and Ho, Ai Phien and Fischer, Jens and Seim, Werner}, title = {TESTING OF CONNECTIONS TAKEN FROM OLD NAILED ROOF TRUSSES}, doi = {10.25643/bauhaus-universitaet.6362}, pages = {8}, abstract = {Experimental testing of nailed connections taken from old roof trusses is presented in this paper. To enable the further use and preservation of nailed roof trusses, it is important to understand how the nail corrosion and aging processes of steel and wood affect the load-bearing capacity and deformation behaviour of such structures. The hypothesis was investigated whether corroded nails allow an increase in load-bearing capacity. Several old and new joints were tested in a first test series, and the results were very promising regarding the initial assumption. However, more tests must be carried out to verify the results.}, subject = {Holzbau}, language = {en} } @inproceedings{VoellmeckeSchwendnerHoetal., author = {V{\"o}llmecke, Lars and Schwendner, Sascha and Ho, Ai Phien and Fischer, Jens and Seim, Werner}, title = {Assessment of nailed connections in existing structures}, doi = {10.25643/bauhaus-universitaet.6361}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230609-63615}, pages = {7}, abstract = {This paper presents the development of an assessment scheme for a visual qualitative evaluation of nailed connections in existing structures, such as board trusses. In terms of further use and preservation, a quick visual inspection will help to evaluate the quality of a structure regarding its load-bearing capacity and deformation behaviour. Tests of old and new nailed joints in combination with a rating scheme point out the correlation between the load-bearing capacity and condition of a joint. Old joints of comparatively good condition tend to exhibit better results than those of poor condition. Moreover, aged joints are generally more load-bearing than newly assembled ones.}, subject = {Holzbau}, language = {en} } @misc{VollmerCalbetiEliasRaabetal., author = {Vollmer, Lisa and Calbet i Elias, Laura and Raab, Susanna and Zanders, Theresa and Kleine, Aya}, title = {Ko-Produktion. Ein Handlungsleitfaden f{\"u}r die Zusammenarbeit zwischen zivilgesellschaftlichen Akteuren und {\"o}ffentlichen Verwaltungen}, edition = {Erste Auflage}, doi = {10.25643/bauhaus-universitaet.4954}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230413-49549}, pages = {57}, abstract = {Dieser Handlungsleitfaden m{\"o}chte die Zusammenarbeit zwischen zivilgesellschaftlichen Akteuren und {\"o}ffentlichen Verwaltungen erleichtern. Er enth{\"a}lt allerdings kein Patentrezept, mit dem eine solche Zusammenarbeit gebacken werden kann, sondern vor allem Anst{\"o}ße, was es dabei alles zu bedenken gilt. Denn Ko-Produktionsprozesse, bei denen zivilgesellschaftliche Gruppen und Verwaltungen gemeinsam an der Umsetzung von Dienstleistungen und Infrastrukturen der Daseinsvorsorge arbeiten, sind komplexe und noch recht unerprobte Prozesse.}, subject = {Koproduktion}, language = {de} } @phdthesis{Dokhanchi, author = {Dokhanchi, Najmeh Sadat}, title = {Measurement of the Indoor Air Temperature Distribution using Acoustic Travel-Time Tomography}, isbn = {978-3-00-075344-2 (print)}, doi = {10.25643/bauhaus-universitaet.4956}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230414-49567}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {155}, abstract = {One of the main criteria determining the thermal comfort of occupants is the air temperature. To monitor this parameter, a thermostat is traditionally mounted in the indoor environment for instance in office rooms in the workplaces, or directly on the radiator or in another location in a room. One of the drawbacks of this conventional method is the measurement at a certain location instead of the temperature distribution in the entire room including the occupant zone. As a result, the climatic conditions measured at the thermostat point may differ from those at the user's location. This not only negatively impacts the thermal comfort assessment but also leads to a waste of energy due to unnecessary heating and cooling. Moreover, for measuring the distribution of the air temperature under laboratory conditions, multiple thermal sensors should be installed in the area under investigation. This requires high effort in both installation and expense. To overcome the shortcomings of traditional sensors, Acoustic travel-time TOMography (ATOM) offers an alternative based on measuring the transmission sound velocity signals. The basis of the ATOM technique is the first-order dependency of the sound velocity on the medium's temperature. The average sound velocity, along the propagation paths, can be determined by travel-times estimation of a defined acoustic signal between transducers. After the travel-times collection, the room is divided into several volumetric grid cells, i.e. voxels, whose sizes are defined depending on the dimension of the room and the number of sound paths. Accordingly, the spatial air temperature in each voxel can be determined using a suitable tomographic algorithm. Recent studies indicate that despite the great potential of this technique to detect room climate, few experiments have been conducted. This thesis aims to develop the ATOM technique for indoor climatic applications while coupling the analysis methods of tomography and room acoustics. The method developed in this thesis uses high-energy early reflections in addition to the direct paths between transducers for travel time estimation. In this way, reflections can provide multiple sound paths that allow the room coverage to be maintained even when a few or even only one transmitter and receiver are used. In the development of the ATOM measurement system, several approaches have been employed, including the development of numerical methods and simulations and conducting experimental measurements, each of which has contributed to the improvement of the system's accuracy. In order to effectively separate the early reflections and ensure adequate coverage of the room with sound paths, a numerical method was developed based on the optimization of the coordinates of the sound transducers in the test room. The validation of the optimal positioning method shows that the reconstructed temperatures were significantly improved by placing the transducers at the optimal coordinates derived from the developed numerical method. The other numerical method developed is related to the selection of the travel times of the early reflections. Accordingly, the detection of the travel times has been improved by adjusting the lengths of the multiple analysis time-windows according to the individual travel times in the reflectogram of the room impulse response. This can reduce the probability of trapping faulty travel times in the analysis time-windows. The simulation model used in this thesis is based on the image source model (ISM) method for simulating the theoretical travel times of early reflection sound paths. The simulation model was developed to simulate the theoretical travel times up to third-order reflections. The empirical measurements were carried out in the climate lab of the Chair of Building Physics under different boundary conditions, i.e., combinations of different room air temperatures under both steady-state and transient conditions, and different measurement setups. With the measurements under controllable conditions in the climate lab, the validity of the developed numerical methods was confirmed. In this thesis, the performance of the ATOM measurement system was evaluated using two measurement setups. The setup for the initial investigations consists of an omnidirectional receiver and a near omnidirectional sound source, keeping the number of transducers as few as possible. This has led to accurately identify the sources of error that could occur in each part of the measuring system. The second measurement setup consists of two directional sound sources and one omnidirectional receiver. This arrangement of transducers allowed a higher number of well-detected travel times for tomography reconstruction, a better travel time estimation due to the directivity of the sound source, and better space utilization. Furthermore, this new measurement setup was tested to determine an optimal selection of the excitation signal. The results showed that for the utilized setup, a linear chirp signal with a frequency range of 200 - 4000 Hz and a signal duration of t = 1 s represents an optimal selection with respect to the reliability of the measured travel times and higher signal-to-noise ratio (SNR). To evaluate the performance of the measuring setups, the ATOM temperatures were always compared with the temperatures of high-resolution NTC thermistors with an accuracy of ±0.2 K. The entire measurement program, including acoustic measurements, simulation, signal processing, and visualization of measurement results are performed in MATLAB software. In addition, to reduce the uncertainty of the positioning of the transducers, the acoustic centre of the loudspeaker was determined experimentally for three types of excitation signals, namely MLS (maximum length sequence) signals with different lengths and duration, linear and logarithmic chirp signals with different defined frequency ranges. For this purpose, the climate lab was converted into a fully anechoic chamber by attaching absorption panels to the entire surfaces of the room. The measurement results indicated that the measurement of the acoustic centre of the sound source significantly reduces the displacement error of the transducer position. Moreover, to measure the air temperature in an occupied room, an algorithm was developed that can convert distorted signals into pure reference signals using an adaptive filter. The measurement results confirm the validity of the approach for a temperature interval of 4 K inside the climate lab. Accordingly, the accuracy of the reconstructed temperatures indicated that ATOM is very suitable for measuring the air temperature distribution in rooms.}, subject = {Bauphysik}, language = {en} } @article{SimonRitz, author = {Simon-Ritz, Frank}, title = {"Kultur ist Reichtum an Problemen": Wie sich der Kultur-Begriff der UNESCO an Egon Friedell ann{\"a}herte}, series = {Palmbaum: Literarisches Journal aus Th{\"u}ringen}, volume = {2023}, journal = {Palmbaum: Literarisches Journal aus Th{\"u}ringen}, number = {Heft 1}, publisher = {Quartus Verlag}, address = {Bucha bei Jena}, doi = {10.25643/bauhaus-universitaet.4952}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230411-49524}, pages = {4}, abstract = {Der in H. 1/2023 erschienene Essay f{\"u}hrt Gedanken einer in H. 1/2022 des "Palmbaum" erschienene Betrachtung (https://doi.org/10.25643/bauhaus-universitaet.4628) weiter. Im Zentrum stehen dabei die Bem{\"u}hungen der UNESCO um das immaterielle Kulturerbe.}, subject = {UNESCO}, language = {de} } @article{LondongBarthSoebke, author = {Londong, J{\"o}rg and Barth, Marcus and S{\"o}bke, Heinrich}, title = {Reducing antimicrobial resistances by source separation of domestic wastewater}, series = {Frontiers in Environmental Health}, volume = {2023}, journal = {Frontiers in Environmental Health}, number = {Volume 2, article 1151898}, publisher = {Frontiers Media}, address = {Lausanne}, doi = {10.3389/fenvh.2023.1151898}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230403-49483}, pages = {1 -- 5}, abstract = {Antimicrobial resistances (AMR) are ranked among the top ten threats to public health and societal development worldwide. Toilet wastewater contained in domestic wastewater is a significant source of AMR entering the aquatic environment. The current commonly implemented combined sewer systems at times cause overflows during rain events, resulting in the discharge of untreated wastewater into the aquatic environment, thus promoting AMR. In this short research article, we describe an approach to transform combined sewer systems into source separation-modified combined sewer systems that separately treat toilet wastewater. We employ simulations for demonstrating that source separation-modified combined sewer systems reduce the emission of AMR- causing substances by up to 11.5 logarithm levels. Thus, source separation- modified combined sewer systems are amongst the most effective means of combating AMR. KEYWORDS}, subject = {Allgemeinheit}, language = {en} } @article{WellbrockLobigsErbrichetal., author = {Wellbrock, Christian-Mathias and Lobigs, Frank and Erbrich, Lukas and Buschow, Christopher}, title = {Coopetition is King. {\"O}konomische Potentiale und medienpolitische Implikationen kooperativer Journalismusplattformen}, volume = {2023}, publisher = {Landesanstalt f{\"u}r Medien NRW}, address = {D{\"u}sseldorf}, doi = {10.25643/bauhaus-universitaet.4947}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230320-49473}, pages = {1 -- 48}, abstract = {Die vorliegende Studie geht der Fragestellung nach, wie sich eine anbieter{\"u}bergreifende, abonnementbasierte Plattform f{\"u}r den digitalen Journalismus, also eine Art Spotify im Journalismus, auf die Ums{\"a}tze der Anbieter journalistischer Inhalte und die Abonnements im Digitaljournalismus in Deutschland auswirken w{\"u}rde. Auf Basis drei sich erg{\"a}nzender Sch{\"a}tzmethoden f{\"u}r Zahlungsbereitschaft, die in zwei Repr{\"a}sentativbefragungen der deutschen Online-Bev{\"o}lkerung mit insgesamt 8.000 Teilnehmenden angewandt wurden, gelangt das Whitepaper zu den folgenden Schl{\"u}sselbefunden.}, subject = {Journalistik}, language = {de} } @article{AnsariZachariasKoenke, author = {Ansari, Meisam and Zacharias, Christin and K{\"o}nke, Carsten}, title = {Metaconcrete: An Experimental Study on the Impact of the Core-Coating Inclusions on Mechanical Vibration}, series = {materials}, volume = {2023}, journal = {materials}, number = {Volume 16, Issue 5, article 1836}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/ma16051836}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230315-49370}, pages = {1 -- 18}, abstract = {Resonance vibration of structures is an unpleasant incident that can be conventionally avoided by using a Tuned Mass Damper (TMD). The scope of this paper contains the utilization of engineered inclusions in concrete as damping aggregates to suppress resonance vibration similar to a TMD. The inclusions are composed of a stainless-steel core with a spherical shape coated with silicone. This configuration has been the subject of several studies and it is best known as Metaconcrete. This paper presents the procedure of a free vibration test conducted with two small-scaled concrete beams. The beams exhibited a higher damping ratio after the core-coating element was secured to them. Subsequently, two meso-models of small-scaled beams were created: one representing conventional concrete and the other representing concrete with the core-coating inclusions. The frequency response curves of the models were obtained. The change in the response peak verified the ability of the inclusions to suppress the resonance vibration. This study concludes that the core-coating inclusions can be utilized in concrete as damping aggregates.}, subject = {Beton}, language = {en} }