@masterthesis{Kuck2023, type = {Bachelor Thesis}, author = {Kuck, Fabian}, title = {Commuter Zone : R{\"u}ckzugsort f{\"u}r Pendelnde zum Ausgleich ihrer Reisezeit}, publisher = {FH Aachen}, address = {Aachen}, pages = {103 Seiten}, year = {2023}, abstract = {Die „Commuter Zone" setzt sich mit dem Zeitverlust Pendelnder auseinander. Berufliche Ziele treiben immer mehr Menschen an, l{\"a}ngere Strecken zur{\"u}ckzulegen. Dabei b{\"u}ßen sie den Zeitaufwand an privater Stelle ein. Als R{\"u}ckzugsort f{\"u}r Alleinreisende schafft die „Commuter Zone" ein effektiv nutzbares Zeitfenster. Dazu wird die R{\"u}cksichtnahme der Routinierten zueinander genutzt und gef{\"o}rdert. Sitz- und Arbeitsfl{\"a}chen lassen sich zur{\"u}ckklappen und erleichtern das Aussteigen. Der begrenzte Raum wird intensiv genutzt. So entsteht Komfort durch die Zuversicht, einen Sitzplatz zu erhalten. Und dank der Zusammensetzung der Sitzkonstellation bleibt das Arbeitsgeschehen privat. Letztlich bietet die „Commuter Zone" den zunehmend selbstbestimmenden Besch{\"a}ftigten neue M{\"o}glichkeiten zur Arbeitseinteilung und schafft Qualit{\"a}tszeit im Privaten.}, language = {de} } @masterthesis{Leiwen2023, type = {Bachelor Thesis}, author = {Leiwen, Sophie}, title = {Steinreich : Mineralien des Siegerlands}, publisher = {FH Aachen}, address = {Aachen}, pages = {69 Seiten}, year = {2023}, abstract = {Der Aufbau und die Entstehung unseres Planeten sind untrennbar mit der Bildung von Gesteinen verbunden - diese setzen sich aus verschiedenen Mineralien zusammen. Sie sind in der Natur weit verbreitet und spielen eine entscheidende Rolle in unserem t{\"a}glichen Leben. Obwohl vielen Menschen der Nutzen von Bodensch{\"a}tzen bewusst ist, besteht ein geringes Wissen {\"u}ber deren Vorkommen und Relevanz. F{\"u}r die wirtschaftliche Entwicklung des Siegerlandes beispielsweise waren der Abbau und der Handel mit Mineralien von großer Bedeutung. Insbesondere der langj{\"a}hrige Abbau von Eisenerz legte den Grundstein f{\"u}r die gesamte Metallindustrie der Region. Die Publikation visualisiert eine umfangreiche Sammlung Siegerl{\"a}nder Mineralien und vermittelt ein grundlegendes Verst{\"a}ndnis von Mineralien.}, language = {de} } @masterthesis{Laschet2023, type = {Bachelor Thesis}, author = {Laschet, Kimberly}, title = {Berufsbegleitende Bildungsplattform f{\"u}r Designer : Lebenslanges Lernen f{\"u}r alle.}, publisher = {FH Aachen}, address = {Aachen}, pages = {159 Seiten}, year = {2023}, abstract = {Academia ist eine berufsbegleitende Bildungsplattform f{\"u}r Designer:innen. Die Mission der Plattform ist es, Designer:innen w{\"a}hrend ihres kreativen Ausbildungsweges und auch lange nach ihrem Berufseinstieg zu begleiten und zu unterst{\"u}tzen. Durch Videokurse, Online-Lehrveranstaltungen, etwa Gruppenseminare, Design Talks und Challenges sollen Nutzer:innen passend auf ihre Interessen und ihrem Niveau entsprechend gef{\"o}rdert werden. Academias Fokus liegt auf eine nachhaltige Weiterentwicklung der F{\"a}higkeiten und der fachlichen Expertise.}, language = {de} } @masterthesis{Katemann2023, type = {Bachelor Thesis}, author = {Katemann, Ronja Mairin}, title = {Gaming for everyone : gender-inklusives Gaming Equipment}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {139 Seiten}, year = {2023}, abstract = {Das Ausleben von Sexualit{\"a}t und Gender befindet sich im gesellschaftlichen Wandel. Vor allem junge Menschen lassen ihre Lebenswege nicht mehr von traditionellen Geschlechterrollen und -normen leiten. In einigen Bereichen ist das schon deutlich sichtbar, w{\"a}hrend andere Bereiche noch vor Herausforderungen stehen, wenn es um Inklusion, Akzeptanz und Repr{\"a}sentation geht. Besonders betroffen ist dabei der Gamingbereich, der repr{\"a}sentativ nach wie vor ein m{\"a}nnlich-dominiertes Gebiet zu sein scheint und durch Vorurteile gegen{\"u}ber Frauen und der LGBTQIA+ Community stigmatisiert ist. Die _FLUX Gaming Maus soll durch Gender-inklusives Design dazu beitragen, stereotype Rollenbilder in der Gaming Welt aufzubrechen und die Community nachhaltig wachsen zu lassen. Sie bietet dabei eine Alternative zu den „typisch m{\"a}nnlich" wirkenden Gaming Produkten auf dem Markt. Durch verschiedene Individualisierungsm{\"o}glichkeiten in Funktion und Gestalt kann _FLUX in einem Online-Konfigurator an den pers{\"o}nlichen Spielstil angepasst werden. So vermittelt _FLUX Zugeh{\"o}rigkeit und Repr{\"a}sentation unabh{\"a}ngig von Geschlecht und bietet Spaß am Gaming f{\"u}r jede:n.}, language = {de} } @masterthesis{Kappel2023, type = {Bachelor Thesis}, author = {Kappel, Jana Naomi}, title = {KLIKK : ein smartes Kinderprodukt f{\"u}r den altersgerechten Einstieg in die digitale Welt}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {163 Seiten}, year = {2023}, abstract = {Die neue Generation wird mit einer Medienwelt konfrontiert, welche nicht auf unsere kleinen Nutzer:innen ausgelegt ist. Die Verwendung von digitalen Medien hatte nie einen gr{\"o}ßeren Einfluss auf unsere Gesellschaft wie im Hier und Jetzt. Somit ist es von großer Relevanz, diese Nutzung kindergerechter zu gestalten und einen sicheren Rahmen f{\"u}r sie zu schaffen. Das Bachelorprojekt „KLIKK" legt einen L{\"o}sungsentwurf f{\"u}r den altersgerechten Einstieg f{\"u}r Kinder in diese digitale Welt vor, um den richtigen Umgang mit Smartwatches und darauf aufbauende Medien zu erm{\"o}glichen und gleichzeitig einen p{\"a}dagogischen Mehrwert zu bieten. Das didaktische Produktkonzept, welches explizit f{\"u}r Kinder designed wurde, beinhaltet das Erlernen des Uhrlesens und befriedigt das aufkommende Bed{\"u}rfnis nach Vernetzung in einem sicheren System. Zudem f{\"o}rdert es die Autonomie und ist an die kindliche Motorik angepasst. Mitinitiator und Namensgeber f{\"u}r diese Konzeption ist die deutsche Kinderuhrenmarke KWIO. KLIKK inkludiert Sicherheit, die Freude am Lernen und bietet eine M{\"o}glichkeit, die Kleinen ganz groß in unsere digitale Welt aufzunehmen.}, language = {de} } @masterthesis{Jacobsen2023, type = {Bachelor Thesis}, author = {Jacobsen, Finn}, title = {Designexperiments with Artificial Intelligence}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {201}, year = {2023}, abstract = {K{\"u}nstliche Intelligenz (KI) hat die Designbranche erreicht, doch die Angst, dass KI Designer:innen die Arbeitspl{\"a}tze wegnimmt, ist unbegr{\"u}ndet. K{\"u}nstliche Intelligenz kann Designer:innen als Werkzeug dienen. Durch das Zusammenspiel von Designer:innen und KI entstehen innerhalb von k{\"u}rzester Zeit neuartige Kreationen. Das Projekt „Designexperiments with Artificial Intelligence" ist eine Sammlung von visuellen Experimenten, welche mit der Hilfe von k{\"u}nstlicher Intelligenz durchgef{\"u}hrt wurden. Eines dieser Experimente wird in Form einer Installation ausgestellt. Dabei werden die Besucher*innen aufgefordert mit der Maschine zusammen ein Bild zu gestalten. Dieser Input wird anschließend von einer KI verarbeitet. Das Projekt „Designexperimente with Artificial Intelligence" ist ein Versuch, mittels k{\"u}nstlicher Intelligenz eine neue {\"A}sthetik zu finden.}, language = {de} } @masterthesis{Kreutz2023, type = {Bachelor Thesis}, author = {Kreutz, Delayne Sara}, title = {Auf links gedreht : eine informative Auseinandersetzung mit der Benachteiligung durch Linksh{\"a}ndigkeit}, publisher = {FH Aachen}, address = {Aachen}, pages = {138 Seiten}, year = {2023}, abstract = {Unsere Welt funktioniert seit jeher v{\"o}llig rechtsorientiert. Rechtsh{\"a}ndigkeit stellt die Norm dar, w{\"a}hrend Linksh{\"a}ndigkeit eine Besonderheit ist - ein Ph{\"a}nomen, oder gar eine Kuriosit{\"a}t, welche im Laufe der Menschheitsgeschichte bei Weitem nicht so akzeptiert wurde wie in der Gegenwart. Das Buch „Auf links gedreht" thematisiert die Wahrnehmung der linken Seite in der Vergangenheit und sensibilisiert f{\"u}r die Probleme von Linksh{\"a}nder:innen in der heutigen Zeit. Ein Buch, fernab der Norm, mit einer Gestaltung ausgelegt auf die Linksh{\"a}ndigkeit. Es f{\"u}hrt Rechtsh{\"a}nder:innen die Problematik vor Augen. So wird sich nicht nur inhaltlich f{\"u}r eine h{\"a}ndigkeitsneutrale Gestaltung eingesetzt. Ein Buch {\"u}ber die linke Hand, gestaltet f{\"u}r die linke Hand.}, language = {de} } @masterthesis{Kouchev2023, type = {Bachelor Thesis}, author = {Kouchev, Veronique}, title = {Shiba Moments : 2D Adventure Story Game}, publisher = {FH Aachen}, address = {Aachen}, pages = {79 Seiten}, year = {2023}, abstract = {Shiba Moments ist ein 2D-Top-Down-Abenteuer Story-Spiel {\"u}ber die Wertsch{\"a}tzung der Zeit, die wir mit unseren Haustieren verbringen. Als Hundebesitzerin Conny wandert der / die Spieler:in durch eine Shiba-Traumwelt, die vergangene Momente mit ihrem Hund assoziieren und sich mit eigenen seltsamen Tr{\"a}umen vermischen. Die Spieler:innen erwartet eine Geschichte voller Emotionen, dunklem Humor und verr{\"u}ckter Ereignisse!}, language = {de} } @article{GrosshauserPettrak2023, author = {Großhauser, Christian and Pettrak, J{\"u}rgen}, title = {Die Rolle des Wasserstoffs in der Abwasserbehandlung}, series = {Wasser und Abfall}, journal = {Wasser und Abfall}, number = {7/8}, publisher = {Springer Fachmedien}, address = {Wiesbaden}, issn = {1436-9095}, doi = {10.1007/s35152-023-1444-4}, year = {2023}, abstract = {Die Bereitstellung von nachhaltig erzeugtem Wasserstoff als Energietr{\"a}ger und Rohstoff ist eine wichtige Schl{\"u}sseltechnologie sowohl als Ersatz f{\"u}r fossile Energietr{\"a}ger, aber auch als Produkt im Zusammenhang mit Kreislaufprozessen. In der Abwasserbehandlung bestehen verschiedene M{\"o}glichkeiten Wasserstoff herzustellen. Mehrere Wege, m{\"o}gliche Synergien, aber auch deren Nachteile werden vorgestellt.}, language = {de} } @book{Heuermann2023, author = {Heuermann, Holger}, title = {Mikrowellentechnik : Feldsimulation, nichtlineare Schaltungstechnik, Komponenten und Subsysteme, Plasmatechnik, Antennen und Ausbreitung}, edition = {2. Auflage}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-41286-9}, doi = {10.1007/978-3-658-41287-6}, pages = {XVI, 394 Seiten}, year = {2023}, abstract = {Das Lehrbuch behandelt alle Aspekte, die den aktuellen Stand der GHz-Technik betreffen. Das Buch behandelt die verschiedenen numerischen Feldsimulationsverfahren. Mit vielen modernen Themen.}, language = {de} } @masterthesis{Kieslich2023, type = {Bachelor Thesis}, author = {Kieslich, Jasmina}, title = {Roverandom : eine illustrative Aufarbeitung und Neuinterpretation des Kinderbuches von J.R.R Tolkien}, publisher = {FH Aachen}, address = {Aachen}, pages = {189 Seiten}, year = {2023}, abstract = {Die Geschichte „Roverandom" von J.R.R Tolkien l{\"a}dt auf eine spannende Reise an der Seite des kleinen Hundes Rover ein, welche zum Mond und in die Tiefsee, vorbei an Zauberern und Drachen f{\"u}hrt. Um das Abenteuer Tolkiens neu aufleben zu lassen, befasst sich dieses Projekt mit der illustrativen Aufarbeitung der Geschichte. Auf Grundlage der Betrachtung von Inspirationen und eigenen Illustrationen des englischen Schriftstellers entwickelte sich eine einheitliche Gestaltung innerhalb des Projekts. Durch die Kombination analoger und digitaler Medien entstanden {\"u}ber 40 Illustrationen, welche verschiedenste Szenen visualisieren und so die Welt des kleinen Hundes Rover auf eine anschauliche Art und Weise darstellen. Die Geschichte „Roverandom" wird so durch eine ganz eigene Bildsprache visuell begleitet und f{\"u}r interessierte Leser:innen neu ge{\"o}ffnet.}, language = {de} } @masterthesis{Keith2023, type = {Bachelor Thesis}, author = {Keith, Anna-Lena}, title = {KI und Sprache : explorativer Blick auf Word Embeddings im NLP}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {271 Seiten}, year = {2023}, abstract = {K{\"u}nstliche Intelligenz (KI) wird heute vielf{\"a}ltig eingesetzt, so auch im Bereich der Sprache. Pers{\"o}nliche Assistent:innen und Chatbots beeindrucken, da sie so etwas Vielschichtiges wie die menschliche Sprache beherrschen. Dass Maschinen dabei nur komplexen mathematischen Regeln folgen, ist den meisten klar. Doch was verbirgt sich hinter dem vermeintlichen „Sprachverst{\"a}ndnis" einer KI? Word Embeddings bilden eine numerische Repr{\"a}sentation von Sprache ab und dienen einem Machine Learning Algorithmus als eine Art „Wortschatz", mit dem gerechnet werden kann. Das Projekt bildet einen hundertdimensionalen Word Embedding Datensatz auf verschiedene Weise und mittels explorierbarer interaktiver Tools ab. Kombiniert mit Erkl{\"a}rungen und eigenen Erkenntnissen finden sich diese Tools in einem Blog, der fachfremden Einsteigenden ins Thema KI erste tiefergehende Einblicke „hinter die Kulissen" bieten soll."}, language = {de} } @masterthesis{Karry2023, type = {Bachelor Thesis}, author = {Karry, Lena}, title = {siso - lerne was du willst}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {296 Seiten}, year = {2023}, abstract = {Kinder konsumieren heutzutage f{\"u}r viele Stunden am Tag soziale Medien. Jedoch sind die Inhalte auf diesen Plattformen oftmals nur oberfl{\"a}chlich und bieten wenig bis keinen Mehrwert durch z. B. zus{\"a}tzliches Wissen. Dabei lernen Kinder einfacher, wenn ihr Interesse am Thema geweckt ist und sie Spaß an der Besch{\"a}ftigung haben. Die individuellen Interessen der Kinder - und damit die m{\"o}glichen Lerninhalte - sind vielf{\"a}ltig. Eine m{\"o}gliche L{\"o}sung hierf{\"u}r ist siso. Siso ist eine Lernplattform, die sich dadurch auszeichnet, dass Kinder ihren Interessen nachgehen sowie neue Fertigkeiten und F{\"a}higkeiten erlernen k{\"o}nnen. Des Weiteren regt siso die Nutzer*innen durch Aufgaben dazu an, selbst aktiv zu werden. Durch die in der Anwendung verbaute soziale Komponente k{\"o}nnen Kinder sich auch {\"u}ber ihre Interessen austauschen und dadurch neue Freunde finden.}, language = {de} } @masterthesis{Kleen2023, type = {Bachelor Thesis}, author = {Kleen, Mareike}, title = {Pendelleuchte aus Glas}, publisher = {FH Aachen}, address = {Aachen}, pages = {127 Seiten}, year = {2023}, abstract = {Glas ist seit jeher ein faszinierender Werkstoff. Es findet Anwendung in zahlreichen Gebieten und bietet als Material f{\"u}r Leuchten eine besondere Eleganz. Die Pendelleuchte „Calice di fiori" vereint handwerkliche Kunstfertigkeit und komfortables Design. Sie ist aus mundgeblasenem Glas gefertigt und verleiht durch ihre F{\"a}rbung eine kraftvolle und dynamische Atmosph{\"a}re im Raum. Das besondere Merkmal der Pendelleuchte ist eine {\"O}ffnung, die eine einfache und intuitive Montage erleichtert. Die Pendelleuchte ist mit energieeffizienten LEDs ausgestattet und l{\"a}sst sich mit einem Smart-Home-System bedienen. Die Lichtintensit{\"a}t und Lichtfarbe k{\"o}nnen den individuellen Bed{\"u}rfnissen angepasst werden. „Calice di fiori" mit schnell abnehmbarem Leuchtenschirm f{\"u}gt sich in modern eingerichtete R{\"a}ume ein und bringt einen Hauch Bl{\"u}tenflair mit sich.}, language = {de} } @incollection{DuffnerUibelPetersonetal.2023, author = {Duffner, Markus and Uibel, Thomas and Peterson, Leif Arne and Moorkamp, Wilfried}, title = {Cross Layers Light - Ein ressourceneffizientes und recyclebares Holz-Wandsystem}, series = {Bauphysik Kalender 2023: Nachhaltigkeit}, booktitle = {Bauphysik Kalender 2023: Nachhaltigkeit}, editor = {Fouad, Nabil A.}, publisher = {Ernst \& Sohn}, address = {Berlin}, isbn = {9783433033890 (Print)}, doi = {10.1002/9783433611289.ch13}, pages = {483 -- 501}, year = {2023}, abstract = {Ein neues tragendes, lagenweise aufgebautes Holzbau-Wandsystem und seine {\"o}konomische und statische Entwicklung werden vorgestellt. Randbedingungen wie Nachhaltigkeit, Ressourceneffizienz und eine beanspruchungsadaptive Konstruktionsweise sind f{\"u}r diese innovative Bauteilentwicklung von zentraler Bedeutung. Eine wesentliche Herausforderung ist die Herstellung der Verbindung der Lagen untereinander zu einem bauphysikalisch und statisch leistungsf{\"a}higen Wandsystem. Die Tragf{\"a}higkeit und Steifigkeit verschiedener Verbindungsvarianten wurden ebenso wie die Eigenschaften der Wandelemente analytisch, numerisch und experimentell untersucht.}, language = {de} } @incollection{MoorkampPetersonUibel2023, author = {Moorkamp, Wilfried and Peterson, Leif Arne and Uibel, Thomas}, title = {Standardholzbr{\"u}cken f{\"u}r kommunale Geh- und Radwege}, series = {Strukturen, Formen und Prinzipien : Festschrift zum 60. Geburtstag von Univ.-Prof. Dr.-Ing. Martin Trautz}, booktitle = {Strukturen, Formen und Prinzipien : Festschrift zum 60. Geburtstag von Univ.-Prof. Dr.-Ing. Martin Trautz}, editor = {Wehren, Cedric}, publisher = {RWTH Aachen}, address = {Aachen}, isbn = {978-3-95886-500-6}, pages = {140 -- 165}, year = {2023}, language = {de} } @book{UibelPeterson2023, author = {Uibel, Thomas and Peterson, Leif Arne}, title = {Tagungsband Aachener Holzbautagung 2023}, editor = {Uibel, Thomas and Peterson, Leif Arne}, publisher = {FH Aachen}, address = {Aachen}, issn = {2197-4489}, year = {2023}, language = {de} } @article{MoehrenBergmannJanseretal.2023, author = {M{\"o}hren, Felix and Bergmann, Ole and Janser, Frank and Braun, Carsten}, title = {On the influence of elasticity on propeller performance: a parametric study}, series = {CEAS Aeronautical Journal}, volume = {14}, journal = {CEAS Aeronautical Journal}, publisher = {Springer Nature}, address = {Berlin}, issn = {1869-5590 (Online)}, doi = {10.1007/s13272-023-00649-y}, pages = {311 -- 323}, year = {2023}, abstract = {The aerodynamic performance of propellers strongly depends on their geometry and, consequently, on aeroelastic deformations. Knowledge of the extent of the impact is crucial for overall aircraft performance. An integrated simulation environment for steady aeroelastic propeller simulations is presented. The simulation environment is applied to determine the impact of elastic deformations on the aerodynamic propeller performance. The aerodynamic module includes a blade element momentum approach to calculate aerodynamic loads. The structural module is based on finite beam elements, according to Timoshenko theory, including moderate deflections. Several fixed-pitch propellers with thin-walled cross sections made of both isotropic and non-isotropic materials are investigated. The essential parameters are varied: diameter, disc loading, sweep, material, rotational, and flight velocity. The relative change of thrust between rigid and elastic blades quantifies the impact of propeller elasticity. Swept propellers of large diameters or low disc loadings can decrease the thrust significantly. High flight velocities and low material stiffness amplify this tendency. Performance calculations without consideration of propeller elasticity can lead to decreased efficiency. To avoid cost- and time-intense redesigns, propeller elasticity should be considered for swept planforms and low disc loadings.}, language = {en} } @book{JanserHavermannHoeveleretal.2023, author = {Janser, Frank and Havermann, Marc and Hoeveler, Bastian and Hertz, Cyril and Bergmann, Ole}, title = {Str{\"o}mungslehre und Aerodynamik : inkompressible Profile und Tragfl{\"u}gelaerodynamik, Band 2}, edition = {4. Auflage}, publisher = {Mainz}, address = {Aachen}, isbn = {978-3-8107-0261-6}, pages = {XIII, 211 Seiten}, year = {2023}, abstract = {Das vorliegende Buch dient als Grundlage f{\"u}r die Bachelor- und Master-Ausbildung von Studierenden im Fachgebiet Str{\"o}mungslehre und Aerodynamik. Im hier behandelten Teilbereich der inkompressiblen Profile und Tragfl{\"u}gelaerodynamik werden schwerpunktm{\"a}ßig die folgenden Themen besprochen: - Profilaerodynamik - Tragfl{\"u}gelaerodynamik - Flugzeugpolare - Methoden zur Flugbereichserweiterung - Schwebeschub und Schwebeleistung - Propellerblattaerodynamik - Numerische Methoden zur Tragfl{\"u}gelberechnung}, language = {de} } @inproceedings{MoehrenBergmannJanseretal.2023, author = {M{\"o}hren, Felix and Bergmann, Ole and Janser, Frank and Braun, Carsten}, title = {On the determination of harmonic propeller loads}, series = {AIAA SCITECH 2023 Forum}, booktitle = {AIAA SCITECH 2023 Forum}, publisher = {AIAA}, doi = {10.2514/6.2023-2404}, pages = {12 Seiten}, year = {2023}, abstract = {Dynamic loads significantly impact the structural design of propeller blades due to fatigue and static strength. Since propellers are elastic structures, deformations and aerodynamic loads are coupled. In the past, propeller manufacturers established procedures to determine unsteady aerodynamic loads and the structural response with analytical steady-state calculations. According to the approach, aeroelastic coupling primarily consists of torsional deformations. They neglect bending deformations, deformation velocities, and inertia terms. This paper validates the assumptions above for a General Aviation propeller and a lift propeller for urban air mobility or large cargo drones. Fully coupled reduced-order simulations determine the dynamic loads in the time domain. A quasi-steady blade element momentum approach transfers loads to one-dimensional finite beam elements. The simulation results are in relatively good agreement with the analytical method for the General Aviation propeller but show increasing errors for the slender lift propeller. The analytical approach is modified to consider the induced velocities. Still, inertia and velocity proportional terms play a significant role for the lift propeller due to increased elasticity. The assumption that only torsional deformations significantly impact the dynamic loads of propellers is not valid. Adequate determination of dynamic loads of such designs requires coupled aeroelastic simulations or advanced analytical procedures.}, language = {en} } @article{BergmannMoehrenBraunetal.2023, author = {Bergmann, Ole and M{\"o}hren, Felix and Braun, Carsten and Janser, Frank}, title = {On the influence of elasticity on swept propeller noise}, series = {AIAA SCITECH 2023 Forum}, journal = {AIAA SCITECH 2023 Forum}, publisher = {AIAA}, address = {Reston, Va.}, doi = {10.2514/6.2023-0210}, year = {2023}, abstract = {High aerodynamic efficiency requires propellers with high aspect ratios, while propeller sweep potentially reduces noise. Propeller sweep and high aspect ratios increase elasticity and coupling of structural mechanics and aerodynamics, affecting the propeller performance and noise. Therefore, this paper analyzes the influence of elasticity on forward-swept, backward-swept, and unswept propellers in hover conditions. A reduced-order blade element momentum approach is coupled with a one-dimensional Timoshenko beam theory and Farassat's formulation 1A. The results of the aeroelastic simulation are used as input for the aeroacoustic calculation. The analysis shows that elasticity influences noise radiation because thickness and loading noise respond differently to deformations. In the case of the backward-swept propeller, the location of the maximum sound pressure level shifts forward by 0.5 °, while in the case of the forward-swept propeller, it shifts backward by 0.5 °. Therefore, aeroacoustic optimization requires the consideration of propeller deformation.}, language = {en} } @book{SeptZillingerWiechertetal.2023, author = {Sept, Marcel and Zillinger, Christina and Wiechert, Johanna and Thelen, Marius}, title = {Aachener Online-Schriften Wirtschaft und Recht. Band 6. 01/2023}, editor = {Kroll-Ludwigs, Kathrin and Bassen-Metz, Yasmine and Bernecker, Andreas and Eggert, Mathias and Fritz, Thomas and Golland, Alexander and H{\"o}hne, Tim and Tran, Duc Hung and Vogt, J{\"u}rgen}, publisher = {FH Aachen / Fachbereich Wirtschaftswissenschaften}, address = {Aachen}, publisher = {Fachhochschule Aachen}, pages = {265 Seiten}, year = {2023}, abstract = {Inhaltsverzeichnis - Bachelorarbeiten 1. Zukunft der Rente - Kann eine Erwerbst{\"a}tigenversicherung das demografische Problem nachhaltig l{\"o}sen? - Marcel Sept | Seite 4-73 2. Die versammlungsgebundenen Aktion{\"a}rsrechte in der neuen virtuellen Hauptversammlung - eine Bewertung aus Unternehmer- und Aktion{\"a}rssicht - Christina Zillinger | Seite 74-130 3. Praxisleitfaden f{\"u}r den Arbeitgeber zum gesetzlichen Sonderk{\"u}ndigungsschutz - Was muss der Arbeitgeber tun, um durch Gesetz besonders gesch{\"u}tzten Arbeitnehmern k{\"u}ndigen zu k{\"o}nnen? - Johanna Wiechert | Seite 131-195 4. Die Steuerverg{\"u}nstigung bei Umstrukturierungen im Konzern nach \S 6a GrEStG im Lichte der aktuellen Rechtsprechung - Marius Thelen | Seite 196-265}, language = {de} } @book{ScheilenPeifferGoerlichetal.2023, author = {Scheilen, Jana and Peiffer, Max and G{\"o}rlich, Anna-Luisa and Hacke, Theresa}, title = {Aachener Online-Schriften Wirtschaft und Recht. Band 7. 02/2023}, editor = {Kroll-Ludwigs, Kathrin and Bassen-Metz, Yasmine and Bernecker, Andreas and Eggert, Mathias and Fritz, Thomas and Golland, Alexander and H{\"o}hne, Tim and Tran, Duc Hung and Vogt, J{\"u}rgen}, publisher = {FH Aachen / Fachbereich Wirtschaftswissenschaften}, address = {Aachen}, publisher = {Fachhochschule Aachen}, pages = {245 Seiten}, year = {2023}, abstract = {1. Die Wirksamkeitsvoraussetzungen der Verdachtsk{\"u}ndigung gegen{\"u}ber einem Arbeitnehmer - Jana Scheilen | Seite 4-66 2. Besteuerungsinkongruenzen im Internationalen Steuerrecht - die Umsetzung der ATAD II in Form des \S 4k EStG in Bezug auf hybride Gesellschaften und Betriebsst{\"a}tten - Max Peiffer | Seite 67-126 3. Der Zuzug einer Gesellschaft aus einem Drittstaat nach Deutschland - Herausforderungen durch die modifizierte Sitztheorie und L{\"o}sungsm{\"o}glichkeiten - Anna-Luisa G{\"o}rlich | Seite 127-189 4. Escalation of Commitment und seine Einflussfaktoren in der unternehmerischen Entscheidungsfindung: Ein Szenario-Experiment - Theresa Hacke | Seite 190-245}, language = {de} } @article{RhodenBallGrajewskietal.2023, author = {Rhoden, Imke and Ball, Christopher Stephen and Grajewski, Matthias and Kuckshinrich, Wilhelm}, title = {Reverse engineering of stakeholder preferences - A multi-criteria assessment of the German passenger car sector}, series = {Renewable and Sustainable Energy Reviews}, volume = {181}, journal = {Renewable and Sustainable Energy Reviews}, number = {July 2023}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1364-0321}, doi = {10.1016/j.rser.2023.113352}, pages = {Article number: 113352}, year = {2023}, abstract = {Germany is a frontrunner in setting frameworks for the transition to a low-carbon system. The mobility sector plays a significant role in this shift, affecting different people and groups on multiple levels. Without acceptance from these stakeholders, emission targets are out of reach. This research analyzes how the heterogeneous preferences of various stakeholders align with the transformation of the mobility sector, looking at the extent to which the German transformation paths are supported and where stakeholders are located. Under the research objective of comparing stakeholders' preferences to identify which car segments require additional support for a successful climate transition, a status quo of stakeholders and car performance criteria is the foundation for the analysis. Stakeholders' hidden preferences hinder the derivation of criteria weightings from stakeholders; therefore, a ranking from observed preferences is used. This study's inverse multi-criteria decision analysis means that weightings can be predicted and used together with a recalibrated performance matrix to explore future preferences toward car segments. Results show that stakeholders prefer medium-sized cars, with the trend pointing towards the increased potential for alternative propulsion technologies and electrified vehicles. These insights can guide the improved targeting of policy supporting the energy and mobility transformation. Additionally, the method proposed in this work can fully handle subjective approaches while incorporating a priori information. A software implementation of the proposed method completes this work and is made publicly available.}, language = {en} } @article{VoegeleJosyabhatlaBalletal.2023, author = {V{\"o}gele, Stefan and Josyabhatla, Vishnu Teja and Ball, Christopher Stephen and Rhoden, Imke and Grajewski, Matthias and R{\"u}bbelke, Dirk and Kuckshinrichs, Wilhelm}, title = {Robust assessment of energy scenarios from stakeholders' perspectives}, series = {Energy}, journal = {Energy}, number = {In Press, Article 128326}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1873-6785 (Online)}, doi = {10.1016/j.energy.2023.128326}, year = {2023}, abstract = {Using scenarios is vital in identifying and specifying measures for successfully transforming the energy system. Such transformations can be particularly challenging and require the support of a broader set of stakeholders. Otherwise, there will be opposition in the form of reluctance to adopt the necessary technologies. Usually, processes for considering stakeholders' perspectives are very time-consuming and costly. In particular, there are uncertainties about how to deal with modifications in the scenarios. In principle, new consulting processes will be required. In our study, we show how multi-criteria decision analysis can be used to analyze stakeholders' attitudes toward transition paths. Since stakeholders differ regarding their preferences and time horizons, we employ a multi-criteria decision analysis approach to identify which stakeholders will support or oppose a transition path. We provide a flexible template for analyzing stakeholder preferences toward transition paths. This flexibility comes from the fact that our multi-criteria decision aid-based approach does not involve intensive empirical work with stakeholders. Instead, it involves subjecting assumptions to robustness analysis, which can help identify options to influence stakeholders' attitudes toward transitions.}, language = {en} } @article{BertzSchoeningMolinnusetal.2024, author = {Bertz, Morten and Sch{\"o}ning, Michael Josef and Molinnus, Denise and Homma, Takayuki}, title = {Influence of temperature, light, and H₂O₂ concentration on microbial spore inactivation: in-situ Raman spectroscopy combined with optical trapping}, series = {Physica status solidi (a) applications and materials science}, journal = {Physica status solidi (a) applications and materials science}, number = {Early View}, publisher = {Wiley-VCH}, address = {Berlin}, issn = {1862-6319 (Online)}, doi = {10.1002/pssa.202300866}, pages = {8 Seiten}, year = {2024}, abstract = {To gain insight on chemical sterilization processes, the influence of temperature (up to 70 °C), intense green light, and hydrogen peroxide (H₂O₂) concentration (up to 30\% in aqueous solution) on microbial spore inactivation is evaluated by in-situ Raman spectroscopy with an optical trap. Bacillus atrophaeus is utilized as a model organism. Individual spores are isolated and their chemical makeup is monitored under dynamically changing conditions (temperature, light, and H₂O₂ concentration) to mimic industrially relevant process parameters for sterilization in the field of aseptic food processing. While isolated spores in water are highly stable, even at elevated temperatures of 70 °C, exposure to H₂O₂ leads to a loss of spore integrity characterized by the release of the key spore biomarker dipicolinic acid (DPA) in a concentration-dependent manner, which indicates damage to the inner membrane of the spore. Intensive light or heat, both of which accelerate the decomposition of H₂O₂ into reactive oxygen species (ROS), drastically shorten the spore lifetime, suggesting the formation of ROS as a rate-limiting step during sterilization. It is concluded that Raman spectroscopy can deliver mechanistic insight into the mode of action of H₂O₂-based sterilization and reveal the individual contributions of different sterilization methods acting in tandem.}, language = {en} } @incollection{KraftKohlMeinecke2024, author = {Kraft, Bodo and Kohl, Philipp and Meinecke, Matthias}, title = {Analyse und Nachverfolgung von Projektzielen durch Einsatz von Natural Language Processing}, series = {KI in der Projektwirtschaft : was ver{\"a}ndert sich durch KI im Projektmanagement?}, booktitle = {KI in der Projektwirtschaft : was ver{\"a}ndert sich durch KI im Projektmanagement?}, editor = {Bernert, Christian and Scheurer, Steffen and Wehnes, Harald}, publisher = {UVK Verlag}, isbn = {978-3-3811-1132-9 (Online)}, doi = {10.24053/9783381111329}, pages = {157 -- 167}, year = {2024}, language = {de} } @incollection{Finkenberger2024, author = {Finkenberger, Isabel Maria}, title = {Transformatives Handeln als disziplin{\"u}berschreitende, kollektive Aktion. Stadtentwicklung trifft k{\"u}nstlerische und kollaborative Handlungspraxen}, series = {Por{\"o}s-Werden : geteilte R{\"a}ume, urbane Dramaturgien, performatives Kuratieren}, booktitle = {Por{\"o}s-Werden : geteilte R{\"a}ume, urbane Dramaturgien, performatives Kuratieren}, editor = {B{\"u}scher, Barbara and Krasny, Elke and Ortmann, Lucie}, publisher = {Turia + Kant}, address = {Wien}, isbn = {978-3-98514-543-0}, pages = {144 -- 158}, year = {2024}, language = {de} } @book{LaumannWolf2024, author = {Laumann, J{\"o}rg and Wolf, Christian}, title = {Stahlbau 1 : Bemessung von Stahlbauten nach Eurocode mit zahlreichen Beispielen}, edition = {26., {\"u}berarbeitete und aktualisierte Auflage}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-41323-1 (Print)}, doi = {10.1007/978-3-658-41324-8}, pages = {XVI, 661 Seiten}, year = {2024}, language = {de} } @article{SchoenrockMuckeltHastermannetal.2024, author = {Schoenrock, Britt and Muckelt, Paul E. and Hastermann, Maria and Albracht, Kirsten and MacGregor, Robert and Martin, David and Gunga, Hans-Christian and Salanova, Michele and Stokes, Maria J. and Warner, Martin B. and Blottner, Dieter}, title = {Muscle stiffness indicating mission crew health in space}, series = {Scientific Reports}, volume = {14}, journal = {Scientific Reports}, number = {Article number: 4196}, publisher = {Springer Nature}, address = {London}, issn = {2045-2322}, doi = {10.1038/s41598-024-54759-6}, pages = {13 Seiten}, year = {2024}, abstract = {Muscle function is compromised by gravitational unloading in space affecting overall musculoskeletal health. Astronauts perform daily exercise programmes to mitigate these effects but knowing which muscles to target would optimise effectiveness. Accurate inflight assessment to inform exercise programmes is critical due to lack of technologies suitable for spaceflight. Changes in mechanical properties indicate muscle health status and can be measured rapidly and non-invasively using novel technology. A hand-held MyotonPRO device enabled monitoring of muscle health for the first time in spaceflight (> 180 days). Greater/maintained stiffness indicated countermeasures were effective. Tissue stiffness was preserved in the majority of muscles (neck, shoulder, back, thigh) but Tibialis Anterior (foot lever muscle) stiffness decreased inflight vs. preflight (p < 0.0001; mean difference 149 N/m) in all 12 crewmembers. The calf muscles showed opposing effects, Gastrocnemius increasing in stiffness Soleus decreasing. Selective stiffness decrements indicate lack of preservation despite daily inflight countermeasures. This calls for more targeted exercises for lower leg muscles with vital roles as ankle joint stabilizers and in gait. Muscle stiffness is a digital biomarker for risk monitoring during future planetary explorations (Moon, Mars), for healthcare management in challenging environments or clinical disorders in people on Earth, to enable effective tailored exercise programmes.}, language = {en} } @incollection{SchneiderWisselinkCzarneckietal.2024, author = {Schneider, Dominik and Wisselink, Frank and Czarnecki, Christian and N{\"o}lle, Nikolai}, title = {Benefits and framework conditions for information-driven business models concerning the Internet of Things}, series = {Digitalization in companies}, booktitle = {Digitalization in companies}, publisher = {Springer}, address = {Wiesbaden}, isbn = {978-3-658-39093-8 (Print)}, doi = {10.1007/978-3-658-39094-5_5}, pages = {59 -- 75}, year = {2024}, abstract = {In the context of the increasing digitalization, the Internet of Things (IoT) is seen as a technological driver through which completely new business models can emerge in the interaction of different players. Identified key players include traditional industrial companies, municipalities and telecommunications companies. The latter, by providing connectivity, ensure that small devices with tiny batteries can be connected almost anywhere and directly to the Internet. There are already many IoT use cases on the market that provide simplification for end users, such as Philips Hue Tap. In addition to business models based on connectivity, there is great potential for information-driven business models that can support or enhance existing business models. One example is the IoT use case Park and Joy, which uses sensors to connect parking spaces and inform drivers about available parking spaces in real time. Information-driven business models can be based on data generated in IoT use cases. For example, a telecommunications company can add value by deriving more decision-relevant information - called insights - from data that is used to increase decision agility. In addition, insights can be monetized. The monetization of insights can only be sustainable, if careful attention is taken and frameworks are considered. In this chapter, the concept of information-driven business models is explained and illustrated with the concrete use case Park and Joy. In addition, the benefits, risks and framework conditions are discussed.}, language = {en} } @article{Bung2024, author = {Bung, Daniel Bernhard}, title = {Kamerabasierte Fließtiefen- und Geschwindigkeitsmessungen}, series = {Wasserwirtschaft}, volume = {114}, journal = {Wasserwirtschaft}, number = {4}, publisher = {Springer Vieweg}, address = {Wiesbaden}, issn = {0043-0978}, pages = {47 -- 53}, year = {2024}, abstract = {In der wasserbaulichen Forschung werden neben klassischen Messinstrumenten zunehmend kamerabasierte Verfahren genutzt. Diese erlauben neben der Bestimmung von Fließgeschwindigkeiten auch die Detektion der freien Wasseroberfl{\"a}che oder zeitliche Vermessung von Kolken. Durch die hohen r{\"a}umlichen und zeitlichen Aufl{\"o}sungen, welche neueste Kamerasensoren liefern, k{\"o}nnen neue Erkenntnisse in turbulenten, komplexen Str{\"o}mungen gewonnen werden. Auch in der Praxis k{\"o}nnen diese Verfahren mit geringem Aufwand wichtige Daten liefern.}, language = {de} } @article{KochBoehnischVerdoncketal.2024, author = {Koch, Christopher and B{\"o}hnisch, Nils and Verdonck, Hendrik and Hach, Oliver and Braun, Carsten}, title = {Comparison of unsteady low- and mid-fidelity propeller aerodynamic methods for whirl flutter applications}, series = {Applied Sciences}, volume = {14}, journal = {Applied Sciences}, number = {2}, publisher = {MDPI}, address = {Basel}, issn = {2076-3417}, doi = {10.3390/app14020850}, pages = {1 -- 28}, year = {2024}, abstract = {Aircraft configurations with propellers have been drawing more attention in recent times, partly due to new propulsion concepts based on hydrogen fuel cells and electric motors. These configurations are prone to whirl flutter, which is an aeroelastic instability affecting airframes with elastically supported propellers. It commonly needs to be mitigated already during the design phase of such configurations, requiring, among other things, unsteady aerodynamic transfer functions for the propeller. However, no comprehensive assessment of unsteady propeller aerodynamics for aeroelastic analysis is available in the literature. This paper provides a detailed comparison of nine different low- to mid-fidelity aerodynamic methods, demonstrating their impact on linear, unsteady aerodynamics, as well as whirl flutter stability prediction. Quasi-steady and unsteady methods for blade lift with or without coupling to blade element momentum theory are evaluated and compared to mid-fidelity potential flow solvers (UPM and DUST) and classical, derivative-based methods. Time-domain identification of frequency-domain transfer functions for the unsteady propeller hub loads is used to compare the different methods. Predictions of the minimum required pylon stiffness for stability show good agreement among the mid-fidelity methods. The differences in the stability predictions for the low-fidelity methods are higher. Most methods studied yield a more unstable system than classical, derivative-based whirl flutter analysis, indicating that the use of more sophisticated aerodynamic modeling techniques might be required for accurate whirl flutter prediction.}, language = {en} } @incollection{MelznerFerger2024, author = {Melzner, J{\"u}rgen and Ferger, Martin}, title = {Building Information Modeling}, series = {Zahlentafeln f{\"u}r den Baubetrieb}, booktitle = {Zahlentafeln f{\"u}r den Baubetrieb}, editor = {Krause, Thomas and Ulke, Bernd and Ferger, Martin}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-41329-3 (Print)}, doi = {10.1007/978-3-658-41330-9_15}, pages = {1051 -- 1073}, year = {2024}, abstract = {Durch die Einf{\"u}hrung von Building Information Modeling (BIM) sowohl projektspezifisch als auch in ganze Unternehmungen hat die Baubranche einen weitreichenden Ver{\"a}nderungsprozess angestoßen. Building Information Modeling kann als eine Methode angesehen werden, um die Informationsasymmetrien zwischen den Projektbeteiligten so gering wie m{\"o}glich zu halten.}, language = {de} } @book{KrauseUlkeFerger2024, author = {Krause, Thomas and Ulke, Bernd and Ferger, Martin}, title = {Zahlentafeln f{\"u}r den Baubetrieb}, editor = {Krause, Thomas and Ulke, Bernd and Ferger, Martin}, edition = {10. Auflage}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-41329-3 (Print)}, doi = {10.1007/978-3-658-41330-9}, pages = {XII, 1087 Seiten}, year = {2024}, language = {de} } @incollection{Ulke2024, author = {Ulke, Bernd}, title = {Bauwirtschaft}, series = {Zahlentafeln f{\"u}r den Baubetrieb}, booktitle = {Zahlentafeln f{\"u}r den Baubetrieb}, editor = {Krause, Thomas and Ulke, Bernd and Ferger, Martin}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-41329-3 (Print)}, doi = {10.1007/978-3-658-41330-9_4}, pages = {17 -- 261}, year = {2024}, abstract = {Die Leistungen der Bauwirtschaft und deren wirtschaftliche Bedeutung in Deutschland werden anhand einer Vielzahl statistischer Daten verdeutlicht. Die im Vergleich zu anderen Wirtschaftsbereichen auftretenden branchenspezifischen Besonderheiten der Bauwirtschaft werden anhand von verschiedenen Kriterien herausgearbeitet. Das Zusammenspiel der einzelnen Akteure des Sektors und die dabei sich ergebenden bzw. zu beachtenden Rechts- und Vertragsgrundlagen werden dargestellt. Aufgrund der meist erheblichen H{\"o}he des eingesetzten Kapitals werden auch notwendige Formen der Risikoabsicherungen und der in der Branche {\"u}blichen und teilweise vorgeschriebenen Versicherungsm{\"o}glichkeiten angesprochen.}, language = {de} } @masterthesis{Zeyen2024, type = {Bachelor Thesis}, author = {Zeyen, Kim}, title = {Seeds : Konzeption und Gestaltung eines Toolkits f{\"u}r die Entwicklung nachhaltiger Webdesigns}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {197 Seiten}, year = {2024}, abstract = {Die Menschheit lebt {\"u}ber ihre Verhältnisse: Permanent {\"u}bersteigt unser Verbrauch die uns j{\"a}hrlich zur Verf{\"u}gung stehenden Ressourcen. Der Energiebedarf digitaler Anwendungen wird dabei meist unterschätzt. Wie Interaction-Designer:innen einen Beitrag zur Entwicklung nachhaltiger Websites leisten können, ist aktuell nur durch aufwendige Recherche zu beantworten. Die Bachelorarbeit »Seeds« stellt einen Schritt im Prozess zu mehr Nachhaltigkeit dar. Sie umfasst ein Toolkit, bestehend aus einer Website und einem Plugin f{\"u}r g{\"a}ngige Designtools. Dieses b{\"u}ndelt alle Informationen, um das Internet barriereärmer, sozialer, ethischer und eben auch ökologisch verträglicher zu gestalten. W{\"a}hrend die Website eine Anlaufstelle f{\"u}r den Wissensaufbau darstellt, unterst{\"u}tzt das Plugin bei der Entwicklung eigener Designs, ohne dass Gestalter:innen den Designprozess verlassen m{\"u}ssen.}, language = {de} } @masterthesis{Wiese2024, type = {Bachelor Thesis}, author = {Wiese, Katharina}, title = {Drink me}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {39 Seiten}, year = {2024}, abstract = {„Drink me" ist ein Kurzfilm {\"u}ber drei Freunde auf einer Party, auf der ein mysteri{\"o}ses Getr{\"a}nk verteilt wird, das die Partyg{\"a}ste in einen besonderen Rausch versetzt. Die Farben fangen an zu leuchten, die Musik wird klarer, alles f{\"u}hlt sich intensiver an. Bis sich die Wahrnehmung der Protagonistin Ally pl{\"o}tzlich ver{\"a}ndert: Vom bunt leuchtenden Rauschzustand zur scheinbaren Realit{\"a}t: Einem grauen, kalten Bunker voller abgewrackter Gestalten. Ally versucht die Party zu verlassen, doch w{\"a}hrend ihre Wahrnehmungen immer weiter verschwimmen, verliert sie gleichzeitig allm{\"a}hlich ihr Bewusstsein. Der Film bietet durch die Darstellung der verschiedenen Wahrnehmungszust{\"a}nde und das Verschwimmen derer ein visuell besonders spannendes Erlebnis.}, language = {de} } @article{HoffstadtNikolauszKrafftetal.2024, author = {Hoffstadt, Kevin and Nikolausz, Marcell and Krafft, Simone and Bonatelli, Maria and Kumar, Vivekanantha and Harms, Hauke and Kuperjans, Isabel}, title = {Optimization of the ex situ biomethanation of hydrogen and carbon dioxide in a novel meandering plug flow reactor: start-up phase and flexible operation}, series = {Bioengineering}, volume = {11}, journal = {Bioengineering}, number = {2}, publisher = {MDPI}, address = {Basel}, issn = {2306-5354}, doi = {10.3390/bioengineering11020165}, pages = {18 Seiten}, year = {2024}, language = {en} } @article{BornheimGriegerBlanecketal.2024, author = {Bornheim, Tobias and Grieger, Niklas and Blaneck, Patrick Gustav and Bialonski, Stephan}, title = {Speaker Attribution in German Parliamentary Debates with QLoRA-adapted Large Language Models}, series = {Journal for language technology and computational linguistics : JLCL}, volume = {37}, journal = {Journal for language technology and computational linguistics : JLCL}, number = {1}, publisher = {Gesellschaft f{\"u}r Sprachtechnologie und Computerlinguistik}, address = {Regensburg}, issn = {2190-6858}, doi = {10.21248/jlcl.37.2024.244}, pages = {13 Seiten}, year = {2024}, abstract = {The growing body of political texts opens up new opportunities for rich insights into political dynamics and ideologies but also increases the workload for manual analysis. Automated speaker attribution, which detects who said what to whom in a speech event and is closely related to semantic role labeling, is an important processing step for computational text analysis. We study the potential of the large language model family Llama 2 to automate speaker attribution in German parliamentary debates from 2017-2021. We fine-tune Llama 2 with QLoRA, an efficient training strategy, and observe our approach to achieve competitive performance in the GermEval 2023 Shared Task On Speaker Attribution in German News Articles and Parliamentary Debates. Our results shed light on the capabilities of large language models in automating speaker attribution, revealing a promising avenue for computational analysis of political discourse and the development of semantic role labeling systems.}, language = {en} } @inproceedings{EggertSchadeBroehletal.2024, author = {Eggert, Mathias and Schade, Maximilian and Br{\"o}hl, Florian and Moriz, Alexander}, title = {Generating synthetic LiDAR point cloud data for object detection using the Unreal Game Engine}, series = {Design Science Research for a Resilient Future (DESRIST 2024)}, booktitle = {Design Science Research for a Resilient Future (DESRIST 2024)}, editor = {Mandviwalla, Munir and S{\"o}llner, Matthias and Tuunanen, Tuure}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-61174-2 (Print)}, doi = {10.1007/978-3-031-61175-9_20}, pages = {295 -- 309}, year = {2024}, abstract = {Object detection based on artificial intelligence is ubiquitous in today's computer vision research and application. The training of the neural networks for object detection requires large and high-quality datasets. Besides datasets based on image data, datasets derived from point clouds offer several advantages. However, training datasets are sparse and their generation requires a lot of effort, especially in industrial domains. A solution to this issue offers the generation of synthetic point cloud data. Based on the design science research method, the work at hand proposes an approach and its instantiation for generating synthetic point cloud data based on the Unreal Engine. The point cloud quality is evaluated by comparing the synthetic cloud to a real-world point cloud. Within a practical example the applicability of the Unreal Game engine for synthetic point cloud generation could be successfully demonstrated.}, language = {de} } @article{OezsoyluAliaziziWagneretal.2024, author = {{\"O}zsoylu, Dua and Aliazizi, Fereshteh and Wagner, Patrick and Sch{\"o}ning, Michael Josef}, title = {Template bacteria-free fabrication of surface imprinted polymer-based biosensor for E. coli detection using photolithographic mimics: Hacking bacterial adhesion}, series = {Biosensors and Bioelectronics}, volume = {261}, journal = {Biosensors and Bioelectronics}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1873-4235 (eISSN)}, doi = {10.1016/j.bios.2024.116491}, pages = {11 Seiten}, year = {2024}, abstract = {As one class of molecular imprinted polymers (MIPs), surface imprinted polymer (SIP)-based biosensors show great potential in direct whole-bacteria detection. Micro-contact imprinting, that involves stamping the template bacteria immobilized on a substrate into a pre-polymerized polymer matrix, is the most straightforward and prominent method to obtain SIP-based biosensors. However, the major drawbacks of the method arise from the requirement for fresh template bacteria and often non-reproducible bacteria distribution on the stamp substrate. Herein, we developed a positive master stamp containing photolithographic mimics of the template bacteria (E. coli) enabling reproducible fabrication of biomimetic SIP-based biosensors without the need for the "real" bacteria cells. By using atomic force and scanning electron microscopy imaging techniques, respectively, the E. coli-capturing ability of the SIP samples was tested, and compared with non-imprinted polymer (NIP)-based samples and control SIP samples, in which the cavity geometry does not match with E. coli cells. It was revealed that the presence of the biomimetic E. coli imprints with a specifically designed geometry increases the sensor E. coli-capturing ability by an "imprinting factor" of about 3. These findings show the importance of geometry-guided physical recognition in bacterial detection using SIP-based biosensors. In addition, this imprinting strategy was employed to interdigitated electrodes and QCM (quartz crystal microbalance) chips. E. coli detection performance of the sensors was demonstrated with electrochemical impedance spectroscopy (EIS) and QCM measurements with dissipation monitoring technique (QCM-D).}, language = {en} } @article{BoehnischBraunMuscarelloetal.2024, author = {B{\"o}hnisch, Nils and Braun, Carsten and Muscarello, Vincenzo and Marzocca, Pier}, title = {About the wing and whirl flutter of a slender wing-propeller system}, series = {Journal of Aircraft}, journal = {Journal of Aircraft}, publisher = {AIAA}, address = {Reston, Va.}, issn = {1533-3868}, doi = {10.2514/1.C037542}, pages = {1 -- 14}, year = {2024}, abstract = {Next-generation aircraft designs often incorporate multiple large propellers attached along the wingspan (distributed electric propulsion), leading to highly flexible dynamic systems that can exhibit aeroelastic instabilities. This paper introduces a validated methodology to investigate the aeroelastic instabilities of wing-propeller systems and to understand the dynamic mechanism leading to wing and whirl flutter and transition from one to the other. Factors such as nacelle positions along the wing span and chord and its propulsion system mounting stiffness are considered. Additionally, preliminary design guidelines are proposed for flutter-free wing-propeller systems applicable to novel aircraft designs. The study demonstrates how the critical speed of the wing-propeller systems is influenced by the mounting stiffness and propeller position. Weak mounting stiffnesses result in whirl flutter, while hard mounting stiffnesses lead to wing flutter. For the latter, the position of the propeller along the wing span may change the wing mode shapes and thus the flutter mechanism. Propeller positions closer to the wing tip enhance stability, but pusher configurations are more critical due to the mass distribution behind the elastic axis.}, language = {en} } @article{ChwallekNawrathKrastinaetal.2024, author = {Chwallek, Constanze and Nawrath, Lara and Krastina, Anzelika and Bruksle, Ieva}, title = {Supportive research on sustainable entrepreneurship and business practices}, series = {SECA Sustainable Entrepreneurship for Climate Action}, journal = {SECA Sustainable Entrepreneurship for Climate Action}, number = {3}, publisher = {Lapland University of Applied Sciences Ltd}, address = {Rovaniemi}, isbn = {978-952-316-514-4 (pdf)}, issn = {2954-1654 (on-line publication)}, pages = {67 Seiten}, year = {2024}, language = {en} } @article{SchopenNarayanBeckmannetal.2024, author = {Schopen, Oliver and Narayan, Sriram and Beckmann, Marvin and Najmi, Aezid-Ul-Hassan and Esch, Thomas and Shabani, Bahman}, title = {An EIS approach to quantify the effects of inlet air relative humidity on the performance of proton exchange membrane fuel cells: a pathway to developing a novel fault diagnostic method}, series = {International Journal of Hydrogen Energy}, volume = {58}, journal = {International Journal of Hydrogen Energy}, number = {8}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {0360-3199 (print)}, issn = {1879-3487 (online)}, doi = {10.1016/j.ijhydene.2024.01.218}, pages = {1302 -- 1315}, year = {2024}, abstract = {In this work, the effect of low air relative humidity on the operation of a polymer electrolyte membrane fuel cell is investigated. An innovative method through performing in situ electrochemical impedance spectroscopy is utilised to quantify the effect of inlet air relative humidity at the cathode side on internal ionic resistances and output voltage of the fuel cell. In addition, algorithms are developed to analyse the electrochemical characteristics of the fuel cell. For the specific fuel cell stack used in this study, the membrane resistance drops by over 39 \% and the cathode side charge transfer resistance decreases by 23 \% after increasing the humidity from 30 \% to 85 \%, while the results of static operation also show an increase of ∼2.2 \% in the voltage output after increasing the relative humidity from 30 \% to 85 \%. In dynamic operation, visible drying effects occur at < 50 \% relative humidity, whereby the increase of the air side stoichiometry increases the drying effects. Furthermore, other parameters, such as hydrogen humidification, internal stack structure, and operating parameters like stoichiometry, pressure, and temperature affect the overall water balance. Therefore, the optimal humidification range must be determined by considering all these parameters to maximise the fuel cell performance and durability. The results of this study are used to develop a health management system to ensure sufficient humidification by continuously monitoring the fuel cell polarisation data and electrochemical impedance spectroscopy indicators.}, language = {en} } @article{ThomaGardiFisheretal.2024, author = {Thoma, Andreas and Gardi, Alessandro and Fisher, Alex and Braun, Carsten}, title = {Improving local path planning for UAV flight in challenging environments by refining cost function weights}, series = {CEAS Aeronautical Journal}, journal = {CEAS Aeronautical Journal}, publisher = {Springer}, address = {Wien}, issn = {1869-5590 (eISSN)}, doi = {10.1007/s13272-024-00741-x}, pages = {12 Seiten}, year = {2024}, abstract = {Unmanned Aerial Vehicles (UAV) constantly gain in versatility. However, more reliable path planning algorithms are required until full autonomous UAV operation is possible. This work investigates the algorithm 3DVFH* and analyses its dependency on its cost function weights in 2400 environments. The analysis shows that the 3DVFH* can find a suitable path in every environment. However, a particular type of environment requires a specific choice of cost function weights. For minimal failure, probability interdependencies between the weights of the cost function have to be considered. This dependency reduces the number of control parameters and simplifies the usage of the 3DVFH*. Weights for costs associated with vertical evasion (pitch cost) and vicinity to obstacles (obstacle cost) have the highest influence on the failure probability of the local path planner. Environments with mainly very tall buildings (like large American city centres) require a preference for horizontal avoidance manoeuvres (achieved with high pitch cost weights). In contrast, environments with medium-to-low buildings (like European city centres) benefit from vertical avoidance manoeuvres (achieved with low pitch cost weights). The cost of the vicinity to obstacles also plays an essential role and must be chosen adequately for the environment. Choosing these two weights ideal is sufficient to reduce the failure probability below 10\%.}, language = {en} } @article{PogorelovaRogachevAkimbekovetal.2024, author = {Pogorelova, Natalia and Rogachev, Evgeniy and Akimbekov, Nuraly S. and Digel, Ilya}, title = {Effect of dehydration method on the micro- and nanomorphological properties of bacterial cellulose produced by Medusomyces gisevii on different substrates}, series = {Journal of materials science}, volume = {2024}, journal = {Journal of materials science}, publisher = {Springer Science + Business Media}, address = {Dordrecht}, issn = {1573-4803 (Online)}, doi = {10.1007/s10853-024-09596-3}, pages = {13 Seiten}, year = {2024}, abstract = {Many important properties of bacterial cellulose (BC), such as moisture absorption capacity, elasticity and tensile strength, largely depend on its structure. This paper presents a study on the effect of the drying method on BC films produced by Medusomyces gisevii using two different procedures: room temperature drying (RT, (24 ± 2 °C, humidity 65 ± 1\%, dried until a constant weight was reached) and freeze-drying (FD, treated at - 75 °C for 48 h). BC was synthesized using one of two different carbon sources—either glucose or sucrose. Structural differences in the obtained BC films were evaluated using atomic force microscopy (AFM), scanning electron microscopy (SEM), and X-ray diffraction. Macroscopically, the RT samples appeared semi-transparent and smooth, whereas the FD group exhibited an opaque white color and sponge-like structure. SEM examination showed denser packing of fibrils in FD samples while RT-samples displayed smaller average fiber diameter, lower surface roughness and less porosity. AFM confirmed the SEM observations and showed that the FD material exhibited a more branched structure and a higher surface roughness. The samples cultivated in a glucose-containing nutrient medium, generally displayed a straight and ordered shape of fibrils compared to the sucrose-derived BC, characterized by a rougher and wavier structure. The BC films dried under different conditions showed distinctly different crystallinity degrees, whereas the carbon source in the culture medium was found to have a relatively small effect on the BC crystallinity.}, language = {en} } @incollection{KrauseUlke2024, author = {Krause, Thomas and Ulke, Bernd}, title = {Bauabrechnung und Mengenermittlung}, series = {Zahlentafeln f{\"u}r den Baubetrieb}, booktitle = {Zahlentafeln f{\"u}r den Baubetrieb}, editor = {Krause, Thomas and Ulke, Bernd and Ferger, Martin}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-41329-3 (Print)}, doi = {10.1007/978-3-658-41330-9_7}, pages = {333 -- 397}, year = {2024}, abstract = {n diesem Kapitel werden die Abrechnungsvorschriften wichtiger ATV kurz, aber umfassend zusammengestellt. Einigen Abrechnungsbestimmungen f{\"u}r Einzelleistungen, die keine Nebenleistungen sind ((siehe DIN 18299 und Abschnitt 4 der jeweiligen ATV), sind mit aufgenommen worden; die ATV enthalten jedoch weitergehende Festlegungen {\"u}ber Nebenleistungen und Besondere Leistungen. Im Anschluss folgen Hinweise zu den Toleranzen im Hochbau sowie im Straßenbau.}, language = {de} } @incollection{RickerUlke2024, author = {Ricker, Marcus and Ulke, Bernd}, title = {Baustoffe}, series = {Zahlentafeln f{\"u}r den Baubetrieb}, booktitle = {Zahlentafeln f{\"u}r den Baubetrieb}, editor = {Krause, Thomas and Ulke, Bernd and Ferger, Martin}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-41329-3 (Print)}, doi = {10.1007/978-3-658-41330-9_2}, pages = {61 -- 148}, year = {2024}, abstract = {In diesem Kapitel werden die Eigenschaften der Baustoffe Bitumen, Beton und Mauerwerk insbesondere unter dem Aspekt der Anwendung im Baustellenbetrieb dargestellt.}, language = {de} } @article{SchoppRohrbachLangeretal.2024, author = {Schopp, Christoph and Rohrbach, Felix and Langer, Luc and Heuermann, Holger}, title = {Detection of welding wire length by active S11 measurement}, series = {IEEE Transactions on Plasma Science}, journal = {IEEE Transactions on Plasma Science}, number = {Early Access}, publisher = {IEEE}, issn = {0093-3813 (Print)}, doi = {10.1109/TPS.2024.3356659}, pages = {1 -- 6}, year = {2024}, abstract = {A novel method to determine the extruded length of a metallic wire for a directed energy deposition (DED) process using a microwave (MW) plasma jet with a straight-through wire feed is presented. The method is based on the relative comparison of the measured frequency response obtained by the large-signal scattering parameter (Hot-S) technique. In the practical working range, repeatability of less than 6\% for a nonactive plasma and 9\% for the active plasma state is found. Measurements are conducted with a focus on a simple solution to decrease the processing time and reduce the integration time of the process into the existing hardware. It is shown that monitoring a single frequency for magnitude and phase changes is sufficient to achieve good accuracy. A combination of different measurement values to determine the length is possible. The applicability to different diameter of the same material is shown as well as a contact detection of the wire and metallic substrate.}, language = {en} }