@masterthesis{Koscielniak2022, type = {Bachelor Thesis}, author = {Koscielniak, Luise}, title = {Das Ludwig Forum Aachen : die Erstellung eines neuen Erscheinungsbildes}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {122 Seiten}, year = {2022}, abstract = {Peter und Irene Ludwig galten als das Kunstsammlerpaar Deutschlands. Sie stellten ihre umfangreiche Sammlung der {\"O}ffentlichkeit zur Verf{\"u}gung, so auch dem Ludwig Forum - das Stammmuseum der beiden Aachener. Doch es ist viel mehr als nur ein Museum. Der Gedanke des Forums als einen Ort des Austausches und der Kommunikation mit und {\"u}ber Kunst ist die leittragende Idee. Das neue Erscheinungsbild leitet sich in der Gestaltung bildlich von diesem Forumsgedanken ab. Zur Visualisierung dieser Idee wurden Kommunikationsachsen aufgegriffen, die zur typografischen Ausrichtung genutzt werden. Sie bieten die M{\"o}glichkeit, in verschiedene Richtungen zu kommunizieren und Inhalte vielseitig und pr{\"a}gnant zu visualisieren. Die Wortmarke des Ludwig Forums dient dabei als klammerndes Element, welches den Rahmen f{\"u}r die Gestaltung erm{\"o}glichen. Mit der Fokussierung auf den Forumsgedanken setzt sich das Ludwig Forum sowohl inhaltlich als nun auch gestalterisch von anderen Museumseinrichtungen ab.}, language = {de} } @masterthesis{Larscheid2022, type = {Bachelor Thesis}, author = {Larscheid, Maja Marlene}, title = {The Future of Fitness : Konzeption und Gestaltung einer digitalen Fitness- und Gesundheitsanwendung}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {153 Seiten}, year = {2022}, abstract = {Laut einer Langzeitstudie bewegt sich mehr als ein Viertel der Weltbev{\"o}lkerung - rund 2 Milliarden Menschen - zu wenig. Trotzdem ließ sich zuletzt klares Interesse an Fitness- und Gesundheitsm{\"o}glichkeiten am stetigen Anstieg der Fitnessstudio-Mitgliederzahl erkennen. Nachdem die Zahl seit 2006 jedes Jahr anstieg, fiel sie in den Pandemie-Jahren. Seit der Pandemie besteht also Bedarf nach einer flexibleren L{\"o}sung zu klassischen Studios. Um diesen Bedarf zu decken, wurde eine digitale L{\"o}sung zum Thema entwickelt. Dazu wurden Sport und Ern{\"a}hrung zusammengefasst. Das beinhaltet Videoanleitungen, Ern{\"a}hrungs- und Trainingsplanerstellung, individuelle K{\"o}rperanalyse im Onboarding-Prozess, Verbindung mit Wearables und ein flexibles Online- sowie Studioangebot. Meine Zielgruppe sind Menschen, die flexibel Sport machen, mit Sport anfangen oder ihre allgemeine Gesundheit verbessern wollen.}, language = {de} } @masterthesis{Laubkermeier2022, type = {Bachelor Thesis}, author = {Laubkermeier, Kim}, title = {trust me}, publisher = {FH Aachen}, address = {Aachen}, pages = {94 Seiten}, year = {2022}, abstract = {"trust me" ist eine schwarz-weiß Fotoserie, pr{\"a}sentiert als Diashow mit unterlegtem Soundtrack. Es geht um das Vertrauen zwischen Model, Fotografin und Betrachter:innen. Die Darsteller sind ausschließlich homosexuelle M{\"a}nner und begeben sich in intime Situationen und Posen. Die Fotos sind {\"u}berwiegend Aktaufnahmen und nehmen eine pornografische Richtung an. Die Fragestellung zu Beginn war, wie weit vertrauen die unerfahrenen Models der Fotografin und was sind diese bereit, von sich zu zeigen. Die offene Kommunikation {\"u}ber die Richtung des Projekts war die essenzielle Basis f{\"u}r die Fotoshootings. W{\"a}hrend des Fotografierens lag der Fokus auf m{\"o}glichst verschiedenen Blickwinkeln, Kulissen, Ausleuchtungen und Motiven. Zus{\"a}tzlich war der sensible Umgang mit den M{\"a}nnern eine Vertrauensprobe."trust me" l{\"a}sst auf diversen Ebenen tief blicken und zeigt, wie loslassen aussieht.}, language = {de} } @incollection{Alt2022, author = {Alt, Helmut}, title = {Speicher speichern, Leiter leiten}, series = {Generationenprojekt Energiewende : Elektroenergiepolitik im Spannungsfeld zwischen Vision und Mission / Herbert Niederhausen (Hrsg.)}, booktitle = {Generationenprojekt Energiewende : Elektroenergiepolitik im Spannungsfeld zwischen Vision und Mission / Herbert Niederhausen (Hrsg.)}, publisher = {Books on Demand}, address = {Norderstedt}, isbn = {9783755774389}, pages = {125 -- 136}, year = {2022}, language = {de} } @article{UysalCreutzFiratetal.2022, author = {Uysal, Karya and Creutz, Till and Firat, Ipek Seda and Artmann, Gerhard and Teusch, Nicole and Temiz Artmann, Ayseg{\"u}l}, title = {Bio-functionalized ultra-thin, large-area and waterproof silicone membranes for biomechanical cellular loading and compliance experiments}, series = {Polymers}, volume = {14}, journal = {Polymers}, number = {11}, publisher = {MDPI}, address = {Basel}, issn = {2073-4360}, pages = {2213}, year = {2022}, abstract = {Biocompatibility, flexibility and durability make polydimethylsiloxane (PDMS) membranes top candidates in biomedical applications. CellDrum technology uses large area, <10 µm thin membranes as mechanical stress sensors of thin cell layers. For this to be successful, the properties (thickness, temperature, dust, wrinkles, etc.) must be precisely controlled. The following parameters of membrane fabrication by means of the Floating-on-Water (FoW) method were investigated: (1) PDMS volume, (2) ambient temperature, (3) membrane deflection and (4) membrane mechanical compliance. Significant differences were found between all PDMS volumes and thicknesses tested (p < 0.01). They also differed from the calculated values. At room temperatures between 22 and 26 °C, significant differences in average thickness values were found, as well as a continuous decrease in thicknesses within a 4 °C temperature elevation. No correlation was found between the membrane thickness groups (between 3-4 µm) in terms of deflection and compliance. We successfully present a fabrication method for thin bio-functionalized membranes in conjunction with a four-step quality management system. The results highlight the importance of tight regulation of production parameters through quality control. The use of membranes described here could also become the basis for material testing on thin, viscous layers such as polymers, dyes and adhesives, which goes far beyond biological applications.}, language = {en} } @masterthesis{Lenz2022, type = {Bachelor Thesis}, author = {Lenz, Lena}, title = {Frauen sind der Boss : eine Kampagne f{\"u}r mehr Gleichberechtigung in F{\"u}hrungspositionen}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {93 Seiten}, year = {2022}, abstract = {Man k{\"o}nnte vermuten, dass in einem so weit entwickelten Land wie Deutschland Geschlechterdiskriminierung bereits erfolgreich {\"u}berwunden wurde - doch das entspricht nicht der Realit{\"a}t. Besonders in F{\"u}hrungspositionen f{\"a}llt dieses Ungleichgewicht auf. Eine Ursache daf{\"u}r ist das historisch etablierte Rollenverst{\"a}ndnis, aber auch vonseiten der Frauen gibt es h{\"a}ufig ein grundlegendes Problem: Sie trauen sich zu wenig zu. Die Kampagne soll junge Frauen dazu motivieren, ihre beruflichen Ambitionen hoch anzusetzen und zielstrebig zu verfolgen. Das Online-Portal "femiverse" ist dabei ihr Wegbereiter. Es erm{\"o}glicht einen direkten Austausch mit anderen Nutzer:innen und er{\"o}ffnet durch Workshops mit Unternehmer:innen neue Perspektiven. Die Bezeichnung „Powerfrau" ist {\"u}berholt - Frauen in F{\"u}hrungspositionen sind keine Ausnahmetalente, sie sind die Normalit{\"a}t von morgen.}, language = {de} } @masterthesis{Nelles2022, type = {Bachelor Thesis}, author = {Nelles, Charlene}, title = {Brain Hack}, publisher = {FH Aachen}, address = {Aachen}, pages = {77 Seiten}, year = {2022}, abstract = {Protagonistin des Films ist Cassandra Becker, eine 25-j{\"a}hrige Informatikstudentin und Mitglied der Hackerorganisation PFABW (Progress For a Better World). Sie hat es sich zum Ziel gesetzt, die Welt zu einem besseren Ort zu machen. Sie legt sich allerdings mit den falschen Leuten an und wird f{\"u}r die Verbreitung eines zerst{\"o}rerischen Computervirus verantwortlich gemacht, der gesundheitliche Folgen f{\"u}r den Menschen mit sich bringt. Sie und ihr bester Freund Jake Fischer haben bei einem PFABW-Mitglied Zuflucht gefunden. Dort versuchen sie gemeinsam herauszufinden, was es mit dem mysteri{\"o}sen Virus auf sich hat.}, language = {de} } @masterthesis{Neumann2022, type = {Bachelor Thesis}, author = {Neumann, Julius}, title = {Traces of urban change}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {72 Seiten}, year = {2022}, abstract = {Eine Stadt ist das Ergebnis eines komplexen Urbanisierungsprozesses. Dieser ist vor allem dadurch bestimmt, dass immer mehr Menschen in St{\"a}dten leben. Das Wachstum und Altern von St{\"a}dten machen st{\"a}ndige r{\"a}umliche und bauliche Ver{\"a}nderungen erforderlich. Die Bachelorarbeit verdeutlicht diese strukturellen Ver{\"a}nderungen der Stadt Aachen anhand von analogen Fotografien im Jahr 2022. Dabei werden Spuren aus unterschiedlichen Zeiten betrachtet und nat{\"u}rliche oder durch den Menschen beeinflusste Ver{\"a}nderungen in Form von Verfall, Nutzung und Erneuerung aufgezeigt. Ziel ist es, den Blick auf Details des urbanen Wandels zu richten, um diesen wahrnehmbar und bewusst zu machen. Die Betrachter:innen sollen zum Nachdenken und genauen Hinschauen angeregt werden. Die Fotografien versuchen den zur{\"u}ckliegenden Ver{\"a}nderungsprozess erkennen zu lassen und damit gewissermaßen dessen Geschichte abzubilden.}, language = {de} } @masterthesis{Pauly2022, type = {Bachelor Thesis}, author = {Pauly, Tim Christian}, title = {Fantasy : Die Gefahren des Internets und der Sozialen Medien in Bezug auf Kinder}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {96 Seiten}, year = {2022}, abstract = {Anhand der Geschichte des Protagonisten Max, wird auf die Gefahr des Internets und der Sozialen Medien hinsichtlich Kinder aufmerksam gemacht. Kinder sind im Internet einigen Gefahren ausgesetzt und ihre Eltern sind sich dessen oftmals kaum bewusst oder haben Probleme, das Tun der Kinder im Auge zu behalten. Die Geschichte wird durch die Lyrik eines Liedes erz{\"a}hlt. Im dazugeh{\"o}rigen Musikvideo bekommen die Zuschauer:innen einen Einblick in Max Leben und sein Leid. Des Weiteren ist zu sehen, wie Max den T{\"a}ter verurteilt, seine Fantasie gestohlen zu haben. Unklar bleibt, ob sein Auftreten w{\"a}hrenddessen in der Wirklichkeit oder aus seiner verbliebenen Fantasie heraus passiert. Sein schweres Schicksal, ausgedr{\"u}ckt mit aller H{\"a}rte, soll den Zuschauenden schockierend auf die Problematik aufmerksam machen. Das Projekt soll helfen, diese fehlende Aufmerksamkeit einzud{\"a}mmen.}, language = {de} } @masterthesis{KoenenPohlen2022, type = {Bachelor Thesis}, author = {Koenen, Rachel and Pohlen, Britta}, title = {Energie zur Teilhabe : Etablierung einer Plattform zum Ausbau der Energiewende f{\"u}r st{\"a}dtische Mieter}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {175 Seiten}, year = {2022}, abstract = {Die gelungene Energiewende ist essenziell auf dem Weg zur geplanten Klimaneutralit{\"a}t bis 2045. M{\"o}glichkeiten f{\"u}r Immobilienbesitzer:innen, sich am Ausbau erneuerbarer Energien zu beteiligen, sind {\"u}berwiegend bekannt. Mieter:innen im urbanen Raum werden jedoch nicht ad{\"a}quat dar{\"u}ber aufgekl{\"a}rt, wie auch sie teilhaben k{\"o}nnen. Die Online-Plattform „energiewende-teilhaben.de"" zentriert Wissen und schl{\"a}gt konkrete personalisierte Maßnahmen zur Partizipation vor. Eine Werbekampagne etabliert die Plattform im st{\"a}dtischen Raum und zeigt bereits motivierten Mieter:innen einfache M{\"o}glichkeiten zur Beteiligung auf. Durch eine hohe Sichtbarkeit der wachsenden Community werden noch Unbeteiligte angesteckt und die Wende in der Stadt ausgel{\"o}st. Die Kampagne lenkt die Motivationsenergie der Bev{\"o}lkerung {\"u}ber die Plattform auf Teilhabe und Klimaschutz.}, language = {de} } @book{KurzSchwer2022, author = {Kurz, Melanie and Schwer, Thilo}, title = {Geschichte des Designs}, edition = {1. Auflage}, publisher = {Beck}, address = {M{\"u}nchen}, isbn = {978-3-406-78813-0}, pages = {128 Seiten}, year = {2022}, abstract = {Dieser Band bietet einen kompakten {\"U}berblick {\"u}ber die wichtigsten Stationen des Produktdesigns vom Beginn der Industrialisierung bis heute. Im Zentrum stehen ikonische Alltagsgegenst{\"a}nde vom Thonet-Stuhl bis zum iPhone. Anschaulich und kenntnisreich nehmen Melanie Kurz und Thilo Schwer dabei auch die gesellschaftspolitische Situation, in der die Objekte entstanden sind, in den Blick.}, language = {de} } @masterthesis{Puzich2022, type = {Bachelor Thesis}, author = {Puzich, Simon}, title = {komuniiio : Generationenaustausch \& Engagement neu gedacht}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {259 Seiten}, year = {2022}, abstract = {Aktuelle Ehren{\"a}mter und M{\"o}glichkeiten des Austauschs sind in alten Strukturen festgefahren und erfahren wenig Aufmerksamkeit. Die Potenziale von {\"a}lteren Generationen werden zu selten gesch{\"a}tzt und ausgesch{\"o}pft. Dazu werden Sie in vielen neuen Dingen und Anwendungen nicht als Nutzer:innengruppe beachtet und somit Schritt f{\"u}r Schritt ausgegrenzt. Der Ansatz dieser Arbeit war es, eine gesellschaftlich f{\"o}rdernde digitale Oberfl{\"a}che f{\"u}r den Generationenaustausch zwischen jung und alt zu schaffen - unabh{\"a}ngig von Vereinsstrukturen oder Organisationen. Vereinen wir das Bewusstsein der Alten mit der Neugier und Innovationskraft der Jungen, um eine Zukunft zu schaffen, in der es sich lohnt, jung zu sein, als auch alt zu werden.}, language = {de} } @masterthesis{Roentgen2022, type = {Bachelor Thesis}, author = {Roentgen, Matthis}, title = {Ketten, die die Welt umspannen : wie funktioniert Blockchain-Technologie und was kann sie uns bieten?}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {57 Seiten}, year = {2022}, abstract = {Bitcoins und NFTs sind l{\"a}ngst keine Neuheit mehr und vielen bereits ein Begriff. Doch was genau steckt hinter digitalen W{\"a}hrungen und kryptografischen Tokens? »Ketten, die die Welt umspannen« ist die erste Ausgabe des »101.mag« und setzt sich mit dieser Frage auseinander. Das Magazin versucht {\"u}ber ein unkonventionelles Layout, interessante Artikel und spannende Illustrationen seine Leser:innen in die Welt der vielversprechenden Technologie einzuf{\"u}hren. Die Kommunikationen zwischen Mensch und Computer steht nicht nur thematisch im Mittelpunkt dieser Arbeit. Auch die Gestaltung profitiert von dieser Zusammenarbeit. So wurde der Fließtext mithilfe eines Processing-Tools {\"u}ber das Raster verteilt. Auch die Illustration wurde {\"u}ber ein weiteres Programm in verpixelte Grafiken umgewandelt. Die statischen Bild- und Textelemente werden durch kleine Animationen erg{\"a}nzt. Diese werden im digitalen Raum eingesetzt und unterst{\"u}tzen so das gesamte Konzept auf multimedialer Ebene. Das Ergebnis ist ein besonderes Magazin, welches eine neue Richtung einschl{\"a}gt.}, language = {de} } @masterthesis{Schiffers2022, type = {Bachelor Thesis}, author = {Schiffers, Simon}, title = {Historische Stoffe im Spielfilm : Zwischen Authentizit{\"a}t und Unterhaltung}, publisher = {FH Aachen}, address = {Aachen}, pages = {107 Seiten}, year = {2022}, abstract = {Historische Stoffe im Spielfilm Zwischen Authentizit{\"a}t und Unterhaltung Spielfilme {\"u}ber wahre Begebenheiten stellen sich der Herausforderung, historisch korrekte Darstellung mit einer spannenden und sehenswerten Pr{\"a}sentation zu kombinieren. Dies ist ein schwieriger Balance Akt, gerade bei Studentenprojekten mit geringem Budget. Im Kurzfilm {\"u}ber Julius Erasmus, dem „Totengr{\"a}ber von Vossenack", wurde sich dieser Aufgabe gestellt. Inhaltlich werden seine m{\"o}glichen Beweggr{\"u}nde dargestellt, die ihn dazu brachten kurz nach dem 2. Weltkrieg zahlreiche gefallene Soldaten im ehemaligen Kampfgebiet im H{\"u}rtgenwald zu begraben. Die schriftliche Dokumentation des Projektes zeigt die Recherche des verfilmten Stoffes, Herausforderungen w{\"a}hrend der Produktion, sowie pers{\"o}nliche Eindr{\"u}cke und Lerneffekte. Letztendlich ist ein Werk entstanden, dass respektvoll mit der zu Grunde liegenden Geschichte umgeht und gleichsam ein cineastisches Erlebnis f{\"u}r den Zuschauer darstellt.}, language = {de} } @masterthesis{Schmalfuss2022, type = {Bachelor Thesis}, author = {Schmalfuss, Vanessa Dana}, title = {LGBTQIA+ : Aufkl{\"a}rungskampagne f{\"u}r die Reduzierung des Gebrauchs von Schimpfw{\"o}rtern an Schulen}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {135 Seiten}, year = {2022}, abstract = {Der Missbrauch von Schimpfw{\"o}rtern im Bereich Schule, die sich gegen LGBTQIA+ richten, ist nach wie vor ein ernst zu nehmendes Problem. Durch eine Aufkl{\"a}rungskampagne wird diesem Problem entgegengewirkt. Da man den Sch{\"u}ler:innen das Benutzen von Schimpfw{\"o}rtern nicht ganz abgew{\"o}hnen kann, wird ihnen durch die Kampagne vorgemacht, wie man besser, cooler und intelligenter schimpft. Durch das Motto "Richtig schimpfen ganz unkompliziert" zeigt die Kampagne den Sch{\"u}ler:innen, wie man auf eine smarte Art und Weise mit Worten umgeht und gleichzeitig den eigenen Gebrauch von Schimpfw{\"o}rtern reflektiert.}, language = {de} } @masterthesis{Sehl2022, type = {Bachelor Thesis}, author = {Sehl, Kristina}, title = {Adapt or die : Heimische W{\"a}lder im Wandel durch Mensch und Zeit}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {316 Seiten}, year = {2022}, abstract = {Wo einst fast l{\"u}ckenlos Laubw{\"a}lder wuchsen, steht heute nur noch ein Drittel der urspr{\"u}nglichen Waldfl{\"a}che. Echte Urw{\"a}lder gibt es hier schon lange nicht mehr: Die Rede ist vom deutschen Wald. Unsere Welt ist im Wandel. Auch in unseren heimischen W{\"a}ldern lassen sich die Einfl{\"u}sse von Mensch und Klimawandel auf die Biodiversit{\"a}t beobachten. Die illustrierte Publikation „Adapt or die" l{\"a}dt mit mehr als 80 großformatigen Artenportraits, Habitat-Kartierungen und gestalteten Themenklappenseiten zur Auseinandersetzung mit dem Wandel unserer heimischen W{\"a}lder ein. Dabei sensibilisiert sie f{\"u}r einen bewussteren Umgang mit Umwelt und Natur. Erweiterungen durch Augmented Reality bieten vereinzelt neben dem Printprodukt aktualisierbare Prognosen, digital und ressourcenschonend. Das komplexe {\"O}kosystem des Waldes reagiert empfindlich auf Ver{\"a}nderungen: Wer sich nicht anpassen kann, wird verschwinden.}, language = {de} } @masterthesis{Steimel2022, type = {Bachelor Thesis}, author = {Steimel, Nina}, title = {An den Rand gedr{\"a}ngt : die Marginalisierung unserer St{\"a}dte}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {55 Seiten}, year = {2022}, abstract = {In der Arbeit »An den Rand gedr{\"a}ngt-Die Marginalisierung unserer St{\"a}dte« wird anhand des Fl{\"a}chenverbrauchs des ruhenden Verkehrs er{\"o}rtert, inwieweit der private Pkw die Entwicklung unserer St{\"a}dte bestimmt. Die Zusammenstellung verschiedener Texte, Raumbeobachtungen und fotografischer Zeitdokumente soll die Problematik und Aktualit{\"a}t des Themas verst{\"a}rken. Schritt f{\"u}r Schritt sollen die Leser:innen einen neuen Blick auf die eigene Stadt gewinnen und f{\"u}r das Problem der akuten Fl{\"a}chenknappheit sensibilisiert werden. Das Werk versteht sich als Aufruf, unseren Straßenraum zu entkarbonisieren, ihn neu zu entdecken und die m{\"o}glichen Chancen im Wandel zu erkennen. Dabei geht es zun{\"a}chst nicht um die Aufz{\"a}hlung von Klimasch{\"a}den, die Abschaffung von Parkpl{\"a}tzen oder gar des Autos, sondern um die Auswirkungen, die Parkpl{\"a}tze auf unser Leben haben und vor allem um ihr Potenzial f{\"u}r die Zukunft.}, language = {de} } @masterthesis{Surowiec2022, type = {Bachelor Thesis}, author = {Surowiec, Julia Andrea}, title = {Das wahre Gewicht des Smartphones : eine informative Erfahrung zu den {\"o}kologischen Auswirkungen}, publisher = {FH Aachen}, address = {Aachen}, pages = {70 Seiten}, year = {2022}, abstract = {Das Smartphone geh{\"o}rt zu den innovativsten Ger{\"a}ten unserer Zeit und befindet sich in einem st{\"a}ndigen Wandel, der nach immer mehr Leistung, gr{\"o}ßeren Displays und besseren Kameras strebt. Mit neuen Modellen, die j{\"a}hrlich auf den Markt kommen und den Milliarden Smartphones, die verkauft werden, entsteht aber nicht nur ein großer Markt voller Angebote, sondern gleichzeitig große Probleme f{\"u}r unsere Umwelt und letztlich auch f{\"u}r uns. Die Smartphone-Industrie schadet massiv unserem {\"O}kosystem. Das Ziel der Arbeit ist die Aufkl{\"a}rung {\"u}ber die Auswirkungen der Smartphone-Industrie. Daf{\"u}r wurden Visualisierung zu Daten und Prozessen gestaltet, die viele Aspekte des Lebenszyklus des Smartphones mit einbeziehen. Die Betrachter:innen sollen so informativ aufgekl{\"a}rt werden, ihren eigenen Konsum zu dem Thema {\"u}berdenken und ein Bewusstsein f{\"u}r ihren Elektronikverbrauch entwickeln.}, language = {de} } @inproceedings{HorikawaAshikagaYamaguchietal.2022, author = {Horikawa, Atsushi and Ashikaga, Mitsugu and Yamaguchi, Masato and Ogino, Tomoyuki and Aoki, Shigeki and Wirsum, Manfred and Funke, Harald and Kusterer, Karsten}, title = {Combined heat and power supply demonstration of Micro-Mix Hydrogen Combustion Applied to M1A-17 Gas Turbine}, series = {Proceedings of ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition (GT2022) (Volume 3A)}, booktitle = {Proceedings of ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition (GT2022) (Volume 3A)}, publisher = {American Society of Mechanical Engineers}, address = {Fairfield}, isbn = {978-0-7918-8599-4}, doi = {10.1115/GT2022-81620}, pages = {7 Seiten}, year = {2022}, abstract = {Kawasaki Heavy Industries, Ltd. (KHI), Aachen University of Applied Sciences, and B\&B-AGEMA GmbH have investigated the potential of low NOx micro-mix (MMX) hydrogen combustion and its application to an industrial gas turbine combustor. Engine demonstration tests of a MMX combustor for the M1A-17 gas turbine with a co-generation system were conducted in the hydrogen-fueled power generation plant in Kobe City, Japan. This paper presents the results of the commissioning test and the combined heat and power (CHP) supply demonstration. In the commissioning test, grid interconnection, loading tests and load cut-off tests were successfully conducted. All measurement results satisfied the Japanese environmental regulation values. Dust and soot as well as SOx were not detected. The NOx emissions were below 84 ppmv at 15 \% O2. The noise level at the site boundary was below 60 dB. The vibration at the site boundary was below 45 dB. During the combined heat and power supply demonstration, heat and power were supplied to neighboring public facilities with the MMX combustion technology and 100 \% hydrogen fuel. The electric power output reached 1800 kW at which the NOx emissions were 72 ppmv at 15 \% O2, and 60 \%RH. Combustion instabilities were not observed. The gas turbine efficiency was improved by about 1 \% compared to a non-premixed type combustor with water injection as NOx reduction method. During a total equivalent operation time of 1040 hours, all combustor parts, the M1A-17 gas turbine as such, and the co-generation system were without any issues.}, language = {en} } @article{FunkeBeckmann2022, author = {Funke, Harald and Beckmann, Nils}, title = {Flexible fuel operation of a Dry-Low-NOx Micromix Combustor with Variable Hydrogen Methane Mixture}, series = {International Journal of Gas Turbine, Propulsion and Power Systems}, volume = {13}, journal = {International Journal of Gas Turbine, Propulsion and Power Systems}, number = {2}, issn = {1882-5079}, pages = {1 -- 7}, year = {2022}, abstract = {The role of hydrogen (H2) as a carbon-free energy carrier is discussed since decades for reducing greenhouse gas emissions. As bridge technology towards a hydrogen-based energy supply, fuel mixtures of natural gas or methane (CH4) and hydrogen are possible. The paper presents the first test results of a low-emission Micromix combustor designed for flexible-fuel operation with variable H2/CH4 mixtures. The numerical and experimental approach for considering variable fuel mixtures instead of recently investigated pure hydrogen is described. In the experimental studies, a first generation FuelFlex Micromix combustor geometry is tested at atmospheric pressure at gas turbine operating conditions corresponding to part- and full-load. The H2/CH4 fuel mixture composition is varied between 57 and 100 vol.\% hydrogen content. Despite the challenges flexible-fuel operation poses onto the design of a combustion system, the evaluated FuelFlex Micromix prototype shows a significant low NOx performance}, language = {en} } @inproceedings{TranTrinhDaoetal.2022, author = {Tran, Ngoc Trinh and Trinh, Tu Luc and Dao, Ngoc Tien and Giap, Van Tan and Truong, Manh Khuyen and Dinh, Thuy Ha and Staat, Manfred}, title = {Limit and shakedown analysis of structures under random strength}, series = {Proceedings of (NACOME2022) The 11th National Conference on Mechanics, Vol. 1. Solid Mechanics, Rock Mechanics, Artificial Intelligence, Teaching and Training, Hanoi, December 2-3, 2022}, booktitle = {Proceedings of (NACOME2022) The 11th National Conference on Mechanics, Vol. 1. Solid Mechanics, Rock Mechanics, Artificial Intelligence, Teaching and Training, Hanoi, December 2-3, 2022}, publisher = {Nha xuat ban Khoa hoc tu nhien va Cong nghe (Verlag Naturwissenschaft und Technik)}, address = {Hanoi}, isbn = {978-604-357-084-7}, pages = {510 -- 518}, year = {2022}, abstract = {Direct methods comprising limit and shakedown analysis is a branch of computational mechanics. It plays a significant role in mechanical and civil engineering design. The concept of direct method aims to determinate the ultimate load bearing capacity of structures beyond the elastic range. For practical problems, the direct methods lead to nonlinear convex optimization problems with a large number of variables and onstraints. If strength and loading are random quantities, the problem of shakedown analysis is considered as stochastic programming. This paper presents a method so called chance constrained programming, an effective method of stochastic programming, to solve shakedown analysis problem under random condition of strength. In this our investigation, the loading is deterministic, the strength is distributed as normal or lognormal variables.}, language = {en} } @inproceedings{MilijašŠakićMarinkovićetal.2022, author = {Milijaš, Aleksa and Šakić, Bogdan and Marinković, Marko and Butenweg, Christoph and Gams, Matija and Klinkel, Sven}, title = {Effects of prior in-plane damage on out-of-plane response of masonry infills with openings}, series = {The Third European Conference on Earthquake Engineering and Seismology September 4 - September 9, 2022, Bucharest}, booktitle = {The Third European Conference on Earthquake Engineering and Seismology September 4 - September 9, 2022, Bucharest}, editor = {Arion, Cristian and Scupin, Alexandra and Ţigănescu, Alexandru}, isbn = {978-973-100-533-1}, pages = {2747 -- 2756}, year = {2022}, abstract = {Masonry infill walls are the most traditional enclosure system that is still widely used in RC frame buildings all over the world, particularly in seismic active regions. Although infill walls are usually neglected in seismic design, during an earthquake event they are subjected to in-plane and out-of-plane forces that can act separately or simultaneously. Since observations of damage to buildings after recent earthquakes showed detrimental effects of in-plane and out-of-plane load interaction on infill walls, the number of studies that focus on influence of in-plane damage on out-of-plane response has significantly increased. However, most of the xperimental campaigns have considered only solid infills and there is a lack of combined in-plane and out-of-plane experimental tests on masonry infills with openings, although windows and doors strongly affect seismic performance. In this paper, two types of experimental tests on infills with window openings are presented. The first is a pure out-of-plane test and the second one is a sequential in-plane and out-of-plane test aimed at investigating the effects of existing in-plane damage on outof-plane response. Additionally, findings from two tests with similar load procedure that were carried out on fully infilled RC frames in the scope of the same project are used for comparison. Test results clearly show that window opening increased vulnerability of infills to combined seismic actions and that prevention of damage in infills with openings is of the utmost importance for seismic safety.}, language = {en} } @inproceedings{RigaPitilakisButenwegetal.2022, author = {Riga, Evi and Pitilakis, Kyriazis and Butenweg, Christoph and Apostolaki, Stefania and Karatzetzou, Anna}, title = {Investigating the impact of the new European Seismic Hazard Model ESHM20 on the seismic design and safety control of industrial facilities}, series = {The Third European Conference on Earthquake Engineering and Seismology September 4 - September 9, 2022, Bucharest}, booktitle = {The Third European Conference on Earthquake Engineering and Seismology September 4 - September 9, 2022, Bucharest}, editor = {Arion, Cristian and Scupin, Alexandra and Ţigănescu, Alexandru}, isbn = {978-973-100-533-1}, pages = {3261 -- 3270}, year = {2022}, abstract = {The seismic performance and safety of major European industrial facilities has a global interest for Europe, its citizens and economy. A potential major disaster at an industrial site could affect several countries, probably far beyond the country where it is located. However, the seismic design and safety assessment of these facilities is practically based on national, often outdated seismic hazard assessment studies, due to many reasons, including the absence of a reliable, commonly developed seismic hazard model for whole Europe. This important gap is no more existing, as the 2020 European Seismic Hazard Model ESHM20 was released in December 2021. In this paper we investigate the expected impact of the adoption of ESHM20 on the seismic demand for industrial facilities, through the comparison of the ESHM20 probabilistic hazard at the sites where industrial facilities are located with the respective national and European regulations. The goal of this preliminary work in the framework of Working Group 13 of the European Association for Earthquake Engineering (EAEE), is to identify potential inadequacies in the design and safety control of existing industrial facilities and to highlight the expected impact of the adoption of the new European Seismic Hazard Model on the design of new industrial facilities and the safety assessment of existing ones.}, language = {en} } @inproceedings{PuetzBaierBrauneretal.2022, author = {P{\"u}tz, Sebastian and Baier, Ralph and Brauner, Philipp and Brillowski, Florian and Dammers, Hannah and Liehner, Luca and Mertens, Alexander and Rodemann, Niklas and Schneider, Sebastian and Schollemann, Alexander and Steuer-Dankert, Linda and Vervier, Luisa and Gries, Thomas and Leicht-Scholten, Carmen and Nagel, Saskia K. and Piller, Frank T. and Schuh, G{\"u}nther and Ziefle, Martina and Nitsch, Verena}, title = {An interdisciplinary view on humane interfaces for digital shadows in the internet of production}, series = {2022 15th International Conference on Human System Interaction (HSI)}, booktitle = {2022 15th International Conference on Human System Interaction (HSI)}, publisher = {IEEE}, isbn = {978-1-6654-6823-7 (Print)}, issn = {2158-2246 (Print)}, doi = {10.1109/HSI55341.2022.9869467}, pages = {8 Seiten}, year = {2022}, abstract = {Digital shadows play a central role for the next generation industrial internet, also known as Internet of Production (IoP). However, prior research has not considered systematically how human actors interact with digital shadows, shaping their potential for success. To address this research gap, we assembled an interdisciplinary team of authors from diverse areas of human-centered research to propose and discuss design and research recommendations for the implementation of industrial user interfaces for digital shadows, as they are currently conceptualized for the IoP. Based on the four use cases of decision support systems, knowledge sharing in global production networks, human-robot collaboration, and monitoring employee workload, we derive recommendations for interface design and enhancing workers' capabilities. This analysis is extended by introducing requirements from the higher-level perspectives of governance and organization.}, language = {en} } @article{FalkenbergBottBongaertsetal.2022, author = {Falkenberg, Fabian and Bott, Michael and Bongaerts, Johannes and Siegert, Petra}, title = {Phylogenetic survey of the subtilase family and a data-mining-based search for new subtilisins from Bacillaceae}, series = {Frontiers in Microbiology}, volume = {2022}, journal = {Frontiers in Microbiology}, number = {13}, publisher = {Frontiers}, address = {Lausanne}, issn = {1664-302X}, doi = {10.3389/fmicb.2022.1017978}, pages = {Artikel 13:1017978}, year = {2022}, abstract = {The subtilase family (S8), a member of the clan SB of serine proteases are ubiquitous in all kingdoms of life and fulfil different physiological functions. Subtilases are divided in several groups and especially subtilisins are of interest as they are used in various industrial sectors. Therefore, we searched for new subtilisin sequences of the family Bacillaceae using a data mining approach. The obtained 1,400 sequences were phylogenetically classified in the context of the subtilase family. This required an updated comprehensive overview of the different groups within this family. To fill this gap, we conducted a phylogenetic survey of the S8 family with characterised holotypes derived from the MEROPS database. The analysis revealed the presence of eight previously uncharacterised groups and 13 subgroups within the S8 family. The sequences that emerged from the data mining with the set filter parameters were mainly assigned to the subtilisin subgroups of true subtilisins, high-alkaline subtilisins, and phylogenetically intermediate subtilisins and represent an excellent source for new subtilisin candidates.}, language = {en} } @article{HaegerBongaertsSiegert2022, author = {Haeger, Gerrit and Bongaerts, Johannes and Siegert, Petra}, title = {A convenient ninhydrin assay in 96-well format for amino acid-releasing enzymes using an air-stable reagent}, series = {Analytical Biochemistry}, journal = {Analytical Biochemistry}, number = {624}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1096-0309}, doi = {10.1016/j.ab.2022.114819}, pages = {Artikel 114819}, year = {2022}, abstract = {An improved and convenient ninhydrin assay for aminoacylase activity measurements was developed using the commercial EZ Nin™ reagent. Alternative reagents from literature were also evaluated and compared. The addition of DMSO to the reagent enhanced the solubility of Ruhemann's purple (RP). Furthermore, we found that the use of a basic, aqueous buffer enhances stability of RP. An acidic protocol for the quantification of lysine was developed by addition of glacial acetic acid. The assay allows for parallel processing in a 96-well format with measurements microtiter plates.}, language = {en} } @article{WeldenSeverinsPoghossianetal.2022, author = {Welden, Melanie and Severins, Robin and Poghossian, Arshak and Wege, Christina and Bongaerts, Johannes and Siegert, Petra and Keusgen, Michael and Sch{\"o}ning, Michael Josef}, title = {Detection of acetoin and diacetyl by a tobacco mosaic virus-assisted field-effect biosensor}, series = {Chemosensors}, volume = {10}, journal = {Chemosensors}, number = {6}, publisher = {MDPI}, address = {Basel}, issn = {2227-9040}, doi = {10.3390/chemosensors10060218}, pages = {Artikel 218}, year = {2022}, abstract = {Acetoin and diacetyl have a major impact on the flavor of alcoholic beverages such as wine or beer. Therefore, their measurement is important during the fermentation process. Until now, gas chromatographic techniques have typically been applied; however, these require expensive laboratory equipment and trained staff, and do not allow for online monitoring. In this work, a capacitive electrolyte-insulator-semiconductor sensor modified with tobacco mosaic virus (TMV) particles as enzyme nanocarriers for the detection of acetoin and diacetyl is presented. The enzyme acetoin reductase from Alkalihalobacillus clausii DSM 8716ᵀ is immobilized via biotin-streptavidin affinity, binding to the surface of the TMV particles. The TMV-assisted biosensor is electrochemically characterized by means of leakage-current, capacitance-voltage, and constant capacitance measurements. In this paper, the novel biosensor is studied regarding its sensitivity and long-term stability in buffer solution. Moreover, the TMV-assisted capacitive field-effect sensor is applied for the detection of diacetyl for the first time. The measurement of acetoin and diacetyl with the same sensor setup is demonstrated. Finally, the successive detection of acetoin and diacetyl in buffer and in diluted beer is studied by tuning the sensitivity of the biosensor using the pH value of the measurement solution.}, language = {en} } @inproceedings{WeldenSeverinsPoghossianetal.2022, author = {Welden, Melanie and Severins, Robin and Poghossian, Arshak and Wege, Christina and Siegert, Petra and Keusgen, Michael and Sch{\"o}ning, Michael Josef}, title = {Studying the immobilization of acetoin reductase with Tobacco mosaic virus particles on capacitive field-effect sensors}, series = {2022 IEEE International Symposium on Olfaction and Electronic Nose (ISOEN)}, booktitle = {2022 IEEE International Symposium on Olfaction and Electronic Nose (ISOEN)}, publisher = {IEEE}, isbn = {978-1-6654-5860-3 (Online)}, doi = {10.1109/ISOEN54820.2022.9789657}, pages = {4 Seiten}, year = {2022}, abstract = {A capacitive electrolyte-insulator-semiconductor (EISCAP) biosensor modified with Tobacco mosaic virus (TMV) particles for the detection of acetoin is presented. The enzyme acetoin reductase (AR) was immobilized on the surface of the EISCAP using TMV particles as nanoscaffolds. The study focused on the optimization of the TMV-assisted AR immobilization on the Ta 2 O 5 -gate EISCAP surface. The TMV-assisted acetoin EISCAPs were electrochemically characterized by means of leakage-current, capacitance-voltage, and constant-capacitance measurements. The TMV-modified transducer surface was studied via scanning electron microscopy.}, language = {en} } @article{OjovanSteinmetz2022, author = {Ojovan, Michael I. and Steinmetz, Hans-J{\"u}rgen}, title = {Approaches to Disposal of Nuclear Waste}, series = {Energies}, volume = {15}, journal = {Energies}, number = {20}, publisher = {MDPI}, address = {Basel}, issn = {1996-1073}, doi = {10.3390/en15207804}, pages = {Artikel 7804}, year = {2022}, abstract = {We present a concise mini overview on the approaches to the disposal of nuclear waste currently used or deployed. The disposal of nuclear waste is the end point of nuclear waste management (NWM) activities and is the emplacement of waste in an appropriate facility without the intention to retrieve it. The IAEA has developed an internationally accepted classification scheme based on the end points of NWM, which is used as guidance. Retention times needed for safe isolation of waste radionuclides are estimated based on the radiotoxicity of nuclear waste. Disposal facilities usually rely on a multi-barrier defence system to isolate the waste from the biosphere, which comprises the natural geological barrier and the engineered barrier system. Disposal facilities could be of a trench type, vaults, tunnels, shafts, boreholes, or mined repositories. A graded approach relates the depth of the disposal facilities' location with the level of hazard. Disposal practices demonstrate the reliability of nuclear waste disposal with minimal expected impacts on the environment and humans.}, language = {en} } @misc{WiegnerVolkerMainzetal.2022, author = {Wiegner, J. and Volker, H. and Mainz, F. and Backes, A. and L{\"o}ken, M. and H{\"u}ning, Felix}, title = {Wiegand-Effect-Powered Wireless IT Sensor Node}, year = {2022}, abstract = {With the growing interest in small distributed sensors for the "Internet of Things", more attention is being paid to energy harvesting techologies. Reducing or eliminating the need for external power sources or batteries make devices more self-sufficient, more reliable, and reduces maintenance requirements. The Wiegand effect is a proven technology for harvesting small amounts of electrical power from mechanical motion.}, language = {en} } @misc{Rouenhoff2022, type = {Master Thesis}, author = {Rouenhoff, Saskia}, title = {Blind - invisible connection : ein Spiel zur kritischen Auseinandersetzung mit den sozialen Medien.}, publisher = {FH Aachen}, address = {Aachen}, pages = {321 Seiten}, year = {2022}, abstract = {Im Computerspiel „blind - invisible connection" taucht der Spieler in eine Fantasiewelt ein, die die sozialen Medien widerspiegelt und von einer Maschine beherrscht wird. Um zu erfahren, was in dieser Welt geschehen ist, muss die Geschichte Schritt f{\"u}r Schritt erspielt und wie ein Puzzle zusammengesetzt werden. Dabei interagieren die Spieler:innen mittels Dialogen mit den Bewohner:innen der Fantasiewelt und l{\"o}sen R{\"a}tsel, die die Geschichte enth{\"u}llen. Durch Analogien zwischen der Fantasiewelt und den sozialen Medien wird die Funktionsweise und der Einfluss der Plattformen auf die Menschen und die Gesellschaft verdeutlicht. So wird eine Reflexion des eigenen Umgangs mit den sozialen Medien angeregt und Gespr{\"a}chsstoff f{\"u}r Diskussionen unter den Spieler:innen und Mitmenschen geliefert.}, language = {de} } @article{ZhantlessovaSavitskayaKistaubayevaetal.2022, author = {Zhantlessova, Sirina and Savitskaya, Irina and Kistaubayeva, Aida and Ignatova, Ludmila and Talipova, Aizhan and Pogrebnjak, Alexander and Digel, Ilya}, title = {Advanced "Green" prebiotic composite of bacterial cellulose/pullulan based on synthetic biology-powered microbial coculture strategy}, series = {Polymers}, volume = {14}, journal = {Polymers}, number = {15}, publisher = {MDPI}, address = {Basel}, issn = {2073-4360}, doi = {10.3390/polym14153224}, pages = {Artikel 3224}, year = {2022}, abstract = {Bacterial cellulose (BC) is a biopolymer produced by different microorganisms, but in biotechnological practice, Komagataeibacter xylinus is used. The micro- and nanofibrillar structure of BC, which forms many different-sized pores, creates prerequisites for the introduction of other polymers into it, including those synthesized by other microorganisms. The study aims to develop a cocultivation system of BC and prebiotic producers to obtain BC-based composite material with prebiotic activity. In this study, pullulan (PUL) was found to stimulate the growth of the probiotic strain Lactobacillus rhamnosus GG better than the other microbial polysaccharides gellan and xanthan. BC/PUL biocomposite with prebiotic properties was obtained by cocultivation of Komagataeibacter xylinus and Aureobasidium pullulans, BC and PUL producers respectively, on molasses medium. The inclusion of PUL in BC is proved gravimetrically by scanning electron microscopy and by Fourier transformed infrared spectroscopy. Cocultivation demonstrated a composite effect on the aggregation and binding of BC fibers, which led to a significant improvement in mechanical properties. The developed approach for "grafting" of prebiotic activity on BC allows preparation of environmentally friendly composites of better quality.}, language = {en} } @article{WeldenPoghossianVahidpouretal.2022, author = {Welden, Melanie and Poghossian, Arshak and Vahidpour, Farnoosh and Wendlandt, Tim and Keusgen, Michael and Wege, Christina and Sch{\"o}ning, Michael Josef}, title = {Towards multi-analyte detection with field-effect capacitors modified with tobacco mosaic virus bioparticles as enzyme nanocarriers}, series = {Biosensors}, volume = {12}, journal = {Biosensors}, number = {1}, publisher = {MDPI}, address = {Basel}, issn = {2079-6374}, doi = {10.3390/bios12010043}, pages = {Artikel 43}, year = {2022}, abstract = {Utilizing an appropriate enzyme immobilization strategy is crucial for designing enzyme-based biosensors. Plant virus-like particles represent ideal nanoscaffolds for an extremely dense and precise immobilization of enzymes, due to their regular shape, high surface-to-volume ratio and high density of surface binding sites. In the present work, tobacco mosaic virus (TMV) particles were applied for the co-immobilization of penicillinase and urease onto the gate surface of a field-effect electrolyte-insulator-semiconductor capacitor (EISCAP) with a p-Si-SiO₂-Ta₂O₅ layer structure for the sequential detection of penicillin and urea. The TMV-assisted bi-enzyme EISCAP biosensor exhibited a high urea and penicillin sensitivity of 54 and 85 mV/dec, respectively, in the concentration range of 0.1-3 mM. For comparison, the characteristics of single-enzyme EISCAP biosensors modified with TMV particles immobilized with either penicillinase or urease were also investigated. The surface morphology of the TMV-modified Ta₂O₅-gate was analyzed by scanning electron microscopy. Additionally, the bi-enzyme EISCAP was applied to mimic an XOR (Exclusive OR) enzyme logic gate.}, language = {en} } @book{Laack2022, author = {Laack, Walter van}, title = {Greater Than the Entire Universe}, publisher = {van Laack GmbH}, address = {Aachen}, isbn = {978-3-936624-52-6}, pages = {120 Seiten}, year = {2022}, language = {en} } @book{Laack2022, author = {Laack, Walter van}, title = {Aufruf zum Nachdenken: Corona und neue Kriege - Wie kann die Menschheit {\"u}berleben?}, publisher = {van Laack GmbH}, address = {Aachen}, isbn = {978-3-936624-56-4}, pages = {56 Seiten}, year = {2022}, language = {de} } @book{Laack2022, author = {Laack, Walter van}, title = {Schnittstelle Tod: Was lernen wir durch Corona {\"u}ber Leben und Tod?}, publisher = {van Laack GmbH}, address = {Aachen}, isbn = {978-3-936624-53-3}, pages = {108 Seiten}, year = {2022}, language = {de} } @article{KahmannRauschPluemeretal.2022, author = {Kahmann, Stephanie L. and Rausch, Valentin and Pl{\"u}mer, Jonathan and M{\"u}ller, Lars P. and Pieper, Martin and Wegmann, Kilian}, title = {The automized fracture edge detection and generation of three-dimensional fracture probability heat maps}, series = {Medical Engineering \& Physics}, volume = {2022}, journal = {Medical Engineering \& Physics}, number = {110}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1350-4533}, pages = {7 Seiten}, year = {2022}, abstract = {With proven impact of statistical fracture analysis on fracture classifications, it is desirable to minimize the manual work and to maximize repeatability of this approach. We address this with an algorithm that reduces the manual effort to segmentation, fragment identification and reduction. The fracture edge detection and heat map generation are performed automatically. With the same input, the algorithm always delivers the same output. The tool transforms one intact template consecutively onto each fractured specimen by linear least square optimization, detects the fragment edges in the template and then superimposes them to generate a fracture probability heat map. We hypothesized that the algorithm runs faster than the manual evaluation and with low (< 5 mm) deviation. We tested the hypothesis in 10 fractured proximal humeri and found that it performs with good accuracy (2.5 mm ± 2.4 mm averaged Euclidean distance) and speed (23 times faster). When applied to a distal humerus, a tibia plateau, and a scaphoid fracture, the run times were low (1-2 min), and the detected edges correct by visual judgement. In the geometrically complex acetabulum, at a run time of 78 min some outliers were considered acceptable. An automatically generated fracture probability heat map based on 50 proximal humerus fractures matches the areas of high risk of fracture reported in medical literature. Such automation of the fracture analysis method is advantageous and could be extended to reduce the manual effort even further.}, language = {en} } @article{SchwagerFleschSchwarzboezletal.2022, author = {Schwager, Christian and Flesch, Robert and Schwarzb{\"o}zl, Peter and Herrmann, Ulf and Teixeira Boura, Cristiano Jos{\´e}}, title = {Advanced two phase flow model for transient molten salt receiver system simulation}, series = {Solar Energy}, volume = {232}, journal = {Solar Energy}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0038-092X (print)}, doi = {10.1016/j.solener.2021.12.065}, pages = {362 -- 375}, year = {2022}, abstract = {In order to realistically predict and optimize the actual performance of a concentrating solar power (CSP) plant sophisticated simulation models and methods are required. This paper presents a detailed dynamic simulation model for a Molten Salt Solar Tower (MST) system, which is capable of simulating transient operation including detailed startup and shutdown procedures including drainage and refill. For appropriate representation of the transient behavior of the receiver as well as replication of local bulk and surface temperatures a discretized receiver model based on a novel homogeneous two-phase (2P) flow modelling approach is implemented in Modelica Dymola®. This allows for reasonable representation of the very different hydraulic and thermal properties of molten salt versus air as well as the transition between both. This dynamic 2P receiver model is embedded in a comprehensive one-dimensional model of a commercial scale MST system and coupled with a transient receiver flux density distribution from raytracing based heliostat field simulation. This enables for detailed process prediction with reasonable computational effort, while providing data such as local salt film and wall temperatures, realistic control behavior as well as net performance of the overall system. Besides a model description, this paper presents some results of a validation as well as the simulation of a complete startup procedure. Finally, a study on numerical simulation performance and grid dependencies is presented and discussed.}, language = {en} } @inproceedings{GedleSchmitzGielenetal.2022, author = {Gedle, Yibekal and Schmitz, Mark and Gielen, Hans and Schmitz, Pascal and Herrmann, Ulf and Teixeira Boura, Cristiano Jos{\´e} and Mahdi, Zahra and Caminos, Ricardo Alexander Chico and Dersch, J{\"u}rgen}, title = {Analysis of an integrated CSP-PV hybrid power plant}, series = {SolarPACES 2020}, booktitle = {SolarPACES 2020}, number = {2445 / 1}, publisher = {AIP conference proceedings / American Institute of Physics}, address = {Melville, NY}, isbn = {978-0-7354-4195-8}, issn = {1551-7616 (online)}, doi = {10.1063/5.0086236}, pages = {9 Seiten}, year = {2022}, abstract = {In the past, CSP and PV have been seen as competing technologies. Despite massive reductions in the electricity generation costs of CSP plants, PV power generation is - at least during sunshine hours - significantly cheaper. If electricity is required not only during the daytime, but around the clock, CSP with its inherent thermal energy storage gets an advantage in terms of LEC. There are a few examples of projects in which CSP plants and PV plants have been co-located, meaning that they feed into the same grid connection point and ideally optimize their operation strategy to yield an overall benefit. In the past eight years, TSK Flagsol has developed a plant concept, which merges both solar technologies into one highly Integrated CSP-PV-Hybrid (ICPH) power plant. Here, unlike in simply co-located concepts, as analyzed e.g. in [1] - [4], excess PV power that would have to be dumped is used in electric molten salt heaters to increase the storage temperature, improving storage and conversion efficiency. The authors demonstrate the electricity cost sensitivity to subsystem sizing for various market scenarios, and compare the resulting optimized ICPH plants with co-located hybrid plants. Independent of the three feed-in tariffs that have been assumed, the ICPH plant shows an electricity cost advantage of almost 20\% while maintaining a high degree of flexibility in power dispatch as it is characteristic for CSP power plants. As all components of such an innovative concept are well proven, the system is ready for commercial market implementation. A first project is already contracted and in early engineering execution.}, language = {en} } @inproceedings{MahdiDerschSchmitzetal.2022, author = {Mahdi, Zahra and Dersch, J{\"u}rgen and Schmitz, Pascal and Dieckmann, Simon and Caminos, Ricardo Alexander Chico and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf and Schwager, Christian and Schmitz, Mark and Gielen, Hans and Gedle, Yibekal and B{\"u}scher, Rauno}, title = {Technical assessment of Brayton cycle heat pumps for the integration in hybrid PV-CSP power plants}, series = {SOLARPACES 2020}, booktitle = {SOLARPACES 2020}, number = {2445 / 1}, publisher = {AIP conference proceedings / American Institute of Physics}, address = {Melville, NY}, isbn = {978-0-7354-4195-8}, issn = {1551-7616 (online)}, doi = {10.1063/5.0086269}, pages = {11 Seiten}, year = {2022}, abstract = {The hybridization of Concentrated Solar Power (CSP) and Photovoltaics (PV) systems is a promising approach to reduce costs of solar power plants, while increasing dispatchability and flexibility of power generation. High temperature heat pumps (HT HP) can be utilized to boost the salt temperature in the thermal energy storage (TES) of a Parabolic Trough Collector (PTC) system from 385 °C up to 565 °C. A PV field can supply the power for the HT HP, thus effectively storing the PV power as thermal energy. Besides cost-efficiently storing energy from the PV field, the power block efficiency of the overall system is improved due to the higher steam parameters. This paper presents a technical assessment of Brayton cycle heat pumps to be integrated in hybrid PV-CSP power plants. As a first step, a theoretical analysis was carried out to find the most suitable working fluid. The analysis included the fluids Air, Argon (Ar), Nitrogen (N2) and Carbon dioxide (CO2). N2 has been chosen as the optimal working fluid for the system. After the selection of the ideal working medium, different concepts for the arrangement of a HT HP in a PV-CSP hybrid power plant were developed and simulated in EBSILON®Professional. The concepts were evaluated technically by comparing the number of components required, pressure losses and coefficient of performance (COP).}, language = {en} } @inproceedings{ZahraPhaniSrujanCaminosetal.2022, author = {Zahra, Mahdi and Phani Srujan, Merige and Caminos, Ricardo Alexander Chico and Schmitz, Pascal and Herrmann, Ulf and Teixeira Boura, Cristiano Jos{\´e} and Schmitz, Mark and Gielen, Hans and Gedle, Yibekal and Dersch, J{\"u}rgen}, title = {Modeling the thermal behavior of solar salt in electrical resistance heaters for the application in PV-CSP hybrid power plants}, series = {SOLARPACES 2020}, booktitle = {SOLARPACES 2020}, number = {2445 / 1}, publisher = {AIP conference proceedings / American Institute of Physics}, address = {Melville, NY}, isbn = {978-0-7354-4195-8}, issn = {1551-7616 (online)}, doi = {10.1063/5.0086268}, pages = {9 Seiten}, year = {2022}, abstract = {Concentrated Solar Power (CSP) systems are able to store energy cost-effectively in their integrated thermal energy storage (TES). By intelligently combining Photovoltaics (PV) systems with CSP, a further cost reduction of solar power plants is expected, as well as an increase in dispatchability and flexibility of power generation. PV-powered Resistance Heaters (RH) can be deployed to raise the temperature of the molten salt hot storage from 385 °C up to 565 °C in a Parabolic Trough Collector (PTC) plant. To avoid freezing and decomposition of molten salt, the temperature distribution in the electrical resistance heater is investigated in the present study. For this purpose, a RH has been modeled and CFD simulations have been performed. The simulation results show that the hottest regions occur on the electric rod surface behind the last baffle. A technical optimization was performed by adjusting three parameters: Shell-baffle clearance, electric rod-baffle clearance and number of baffles. After the technical optimization was carried out, the temperature difference between the maximum temperature and the average outlet temperature of the salt is within the acceptable limits, thus critical salt decomposition has been avoided. Additionally, the CFD simulations results were analyzed and compared with results obtained with a one-dimensional model in Modelica.}, language = {en} } @inproceedings{CaminosSchmitzAttietal.2022, author = {Caminos, Ricardo Alexander Chico and Schmitz, Pascal and Atti, Vikrama and Mahdi, Zahra and Teixeira Boura, Cristiano Jos{\´e} and Sattler, Johannes Christoph and Herrmann, Ulf and Hilger, Patrick and Dieckmann, Simon}, title = {Development of a micro heliostat and optical qualification assessment with a 3D laser scanning method}, series = {SOLARPACES 2020}, booktitle = {SOLARPACES 2020}, number = {2445 / 1}, publisher = {AIP conference proceedings / American Institute of Physics}, address = {Melville, NY}, isbn = {978-0-7354-4195-8}, issn = {1551-7616 (online)}, doi = {10.1063/5.0086262}, pages = {8 Seiten}, year = {2022}, abstract = {The Solar-Institut J{\"u}lich (SIJ) and the companies Hilger GmbH and Heliokon GmbH from Germany have developed a small-scale cost-effective heliostat, called "micro heliostat". Micro heliostats can be deployed in small-scale concentrated solar power (CSP) plants to concentrate the sun's radiation for electricity generation, space or domestic water heating or industrial process heat. In contrast to conventional heliostats, the special feature of a micro heliostat is that it consists of dozens of parallel-moving, interconnected, rotatable mirror facets. The mirror facets array is fixed inside a box-shaped module and is protected from weathering and wind forces by a transparent glass cover. The choice of the building materials for the box, tracking mechanism and mirrors is largely dependent on the selected production process and the intended application of the micro heliostat. Special attention was paid to the material of the tracking mechanism as this has a direct influence on the accuracy of the micro heliostat. The choice of materials for the mirror support structure and the tracking mechanism is made in favor of plastic molded parts. A qualification assessment method has been developed by the SIJ in which a 3D laser scanner is used in combination with a coordinate measuring machine (CMM). For the validation of this assessment method, a single mirror facet was scanned and the slope deviation was computed.}, language = {en} } @inproceedings{NiederwestbergSchneiderTeixeiraBouraetal.2022, author = {Niederwestberg, Stefan and Schneider, Falko and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf}, title = {Introduction to a direct irradiated transparent tube particle receiver}, series = {SOLARPACES 2020}, booktitle = {SOLARPACES 2020}, number = {2445 / 1}, publisher = {AIP conference proceedings / American Institute of Physics}, address = {Melville, NY}, isbn = {978-0-7354-4195-8}, issn = {1551-7616 (online)}, doi = {10.1063/5.0086735}, pages = {9 Seiten}, year = {2022}, abstract = {New materials often lead to innovations and advantages in technical applications. This also applies to the particle receiver proposed in this work that deploys high-temperature and scratch resistant transparent ceramics. With this receiver design, particles are heated through direct-contact concentrated solar irradiance while flowing downwards through tubular transparent ceramics from top to bottom. In this paper, the developed particle receiver as well as advantages and disadvantages are described. Investigations on the particle heat-up characteristics from solar irradiance were carried out with DEM simulations which indicate that particle temperatures can reach up to 1200 K. Additionally, a simulation model was set up for investigating the dynamic behavior. A test receiver at laboratory scale has been designed and is currently being built. In upcoming tests, the receiver test rig will be used to validate the simulation results. The design and the measurement equipment is described in this work.}, language = {en} } @inproceedings{SattlerSchneiderAngeleetal.2022, author = {Sattler, Johannes Christoph and Schneider, Iesse Peer and Angele, Florian and Atti, Vikrama and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf}, title = {Development of heliostat field calibration methods: Theory and experimental test results}, series = {SolarPACES conference proceedings}, booktitle = {SolarPACES conference proceedings}, number = {Vol. 1}, publisher = {TIB Open Publishing}, address = {Hannover}, issn = {2751-9899 (online)}, doi = {10.52825/solarpaces.v1i.678}, pages = {9 Seiten}, year = {2022}, abstract = {In this work, three patent pending calibration methods for heliostat fields of central receiver systems (CRS) developed by the Solar-Institut J{\"u}lich (SIJ) of the FH Aachen University of Applied Sciences are presented. The calibration methods can either operate in a combined mode or in stand-alone mode. The first calibration method, method A, foresees that a camera matrix is placed into the receiver plane where it is subjected to concentrated solar irradiance during a measurement process. The second calibration method, method B, uses an unmanned aerial vehicle (UAV) such as a quadrocopter to automatically fly into the reflected solar irradiance cross-section of one or more heliostats (two variants of method B were tested). The third calibration method, method C, foresees a stereo central camera or multiple stereo cameras installed e.g. on the solar tower whereby the orientations of the heliostats are calculated from the location detection of spherical red markers attached to the heliostats. The most accurate method is method A which has a mean accuracy of 0.17 mrad. The mean accuracy of method B variant 1 is 1.36 mrad and of variant 2 is 1.73 mrad. Method C has a mean accuracy of 15.07 mrad. For method B there is great potential regarding improving the measurement accuracy. For method C the collected data was not sufficient for determining whether or not there is potential for improving the accuracy.}, language = {en} } @inproceedings{SattlerAttiAlexopoulosetal.2022, author = {Sattler, Johannes Christoph and Atti, Vikrama and Alexopoulos, Spiros and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf and Dutta, Siddharth and Kioutsioukis, Ioannis}, title = {DNI forecast tool for the smart operation of a parabolic trough collector system with concrete thermal energy storage: Theory, results and outlook}, series = {SolarPACES conference proceedings}, booktitle = {SolarPACES conference proceedings}, number = {VOL. 1}, publisher = {TIB Open Publishing}, address = {Hannover}, issn = {2751-9899 (online)}, doi = {10.52825/solarpaces.v1i.731}, pages = {9 Seiten}, year = {2022}, abstract = {This work presents a basic forecast tool for predicting direct normal irradiance (DNI) in hourly resolution, which the Solar-Institut J{\"u}lich (SIJ) is developing within a research project. The DNI forecast data shall be used for a parabolic trough collector (PTC) system with a concrete thermal energy storage (C-TES) located at the company KEAN Soft Drinks Ltd in Limassol, Cyprus. On a daily basis, 24-hour DNI prediction data in hourly resolution shall be automatically produced using free or very low-cost weather forecast data as input. The purpose of the DNI forecast tool is to automatically transfer the DNI forecast data on a daily basis to a main control unit (MCU). The MCU automatically makes a smart decision on the operation mode of the PTC system such as steam production mode and/or C-TES charging mode. The DNI forecast tool was evaluated using historical data of measured DNI from an on-site weather station, which was compared to the DNI forecast data. The DNI forecast tool was tested using data from 56 days between January and March 2022, which included days with a strong variation in DNI due to cloud passages. For the evaluation of the DNI forecast reliability, three categories were created and the forecast data was sorted accordingly. The result was that the DNI forecast tool has a reliability of 71.4 \% based on the tested days. The result fulfils SIJ's aim to achieve a reliability of around 70 \%, but SIJ aims to still improve the DNI forecast quality.}, language = {en} } @inproceedings{SchwagerAngeleNourietal.2022, author = {Schwager, Christian and Angele, Florian and Nouri, Bijan and Schwarzb{\"o}zl, Peter and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf}, title = {Impact of DNI forecast quality on performance prediction for a commercial scale solar tower: Application of nowcasting DNI maps to dynamic solar tower simulation}, series = {SolarPACES conference proceedings}, booktitle = {SolarPACES conference proceedings}, number = {Vol. 1}, publisher = {TIB Open Publishing}, address = {Hannover}, issn = {2751-9899 (online)}, doi = {10.52825/solarpaces.v1i.675}, pages = {9 Seiten}, year = {2022}, abstract = {Concerning current efforts to improve operational efficiency and to lower overall costs of concentrating solar power (CSP) plants with prediction-based algorithms, this study investigates the quality and uncertainty of nowcasting data regarding the implications for process predictions. DNI (direct normal irradiation) maps from an all-sky imager-based nowcasting system are applied to a dynamic prediction model coupled with ray tracing. The results underline the need for high-resolution DNI maps in order to predict net yield and receiver outlet temperature realistically. Furthermore, based on a statistical uncertainty analysis, a correlation is developed, which allows for predicting the uncertainty of the net power prediction based on the corresponding DNI forecast uncertainty. However, the study reveals significant prediction errors and the demand for further improvement in the accuracy at which local shadings are forecasted.}, language = {en} } @inproceedings{SchulteSchwagerFrantzetal.2022, author = {Schulte, Jonas and Schwager, Christian and Frantz, Cathy and Schloms, Felix and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf}, title = {Control concept for a molten salt receiver in star design: Development, optimization and testing with cloud passage scenarios}, series = {SolarPACES conference proceedings}, booktitle = {SolarPACES conference proceedings}, number = {Vol. 1}, publisher = {TIB Open Publishing}, address = {Hannover}, issn = {2751-9899 (online)}, doi = {10.52825/solarpaces.v1i.693}, pages = {9 Seiten}, year = {2022}, abstract = {A promising approach to reduce the system costs of molten salt solar receivers is to enable the irradiation of the absorber tubes on both sides. The star design is an innovative receiver design, pursuing this approach. The unconventional design leads to new challenges in controlling the system. This paper presents a control concept for a molten salt receiver system in star design. The control parameters are optimized in a defined test cycle by minimizing a cost function. The control concept is tested in realistic cloud passage scenarios based on real weather data. During these tests, the control system showed no sign of unstable behavior, but to perform sufficiently in every scenario further research and development like integrating Model Predictive Controls (MPCs) need to be done. The presented concept is a starting point to do so.}, language = {en} } @inproceedings{BergmannGoettenBraunetal.2022, author = {Bergmann, Ole and G{\"o}tten, Falk and Braun, Carsten and Janser, Frank}, title = {Comparison and evaluation of blade element methods against RANS simulations and test data}, series = {CEAS Aeronautical Journal}, volume = {13}, booktitle = {CEAS Aeronautical Journal}, publisher = {Springer}, address = {Wien}, issn = {1869-5590 (Online)}, doi = {10.1007/s13272-022-00579-1}, pages = {535 -- 557}, year = {2022}, abstract = {This paper compares several blade element theory (BET) method-based propeller simulation tools, including an evaluation against static propeller ground tests and high-fidelity Reynolds-Average Navier Stokes (RANS) simulations. Two proprietary propeller geometries for paraglider applications are analysed in static and flight conditions. The RANS simulations are validated with the static test data and used as a reference for comparing the BET in flight conditions. The comparison includes the analysis of varying 2D aerodynamic airfoil parameters and different induced velocity calculation methods. The evaluation of the BET propeller simulation tools shows the strength of the BET tools compared to RANS simulations. The RANS simulations underpredict static experimental data within 10\% relative error, while appropriate BET tools overpredict the RANS results by 15-20\% relative error. A variation in 2D aerodynamic data depicts the need for highly accurate 2D data for accurate BET results. The nonlinear BET coupled with XFOIL for the 2D aerodynamic data matches best with RANS in static operation and flight conditions. The novel BET tool PropCODE combines both approaches and offers further correction models for highly accurate static and flight condition results.}, language = {en} } @misc{Nordmann2022, type = {Master Thesis}, author = {Nordmann, Alexander}, title = {Prozess{\"u}berwachung beim Werkzeugschleifen von WC-Co Hartmetallschaftfr{\"a}sern}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {xi, 54 Seiten}, year = {2022}, language = {de} } @masterthesis{Vu2022, type = {Bachelor Thesis}, author = {Vu, Tuan Dat}, title = {Objekterkennung und Schienenerkennung in der Schienenfahrzeugtechnik}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {72 Seiten}, year = {2022}, language = {de} } @book{Engelmann2022, author = {Engelmann, Ulrich M.}, title = {Zielf{\"u}hrend moderieren}, publisher = {UVK Verlag}, address = {Stuttgart}, isbn = {9783838556895}, doi = {10.36198/9783838556895}, pages = {438 S.}, year = {2022}, abstract = {In der Teamarbeit wird Moderation zum Erfolgsfaktor, der jedoch h{\"a}ufig untersch{\"a}tzt wird. Ausgehend vom pers{\"o}nlichen Kompetenzniveau verkn{\"u}pft dieses Buch Grundlagen und Methoden zu Wegen, um Ihre pers{\"o}nliche Entwicklung individuell zu begleiten: Neulinge finden hilfreiche Checklisten und Basistechniken f{\"u}r ihre ersten Moderationen, Fortgeschrittene wertvolle Praxistipps und Methoden f{\"u}r den Ausbau ihrer Moderationskompetenz. Profis schließlich genießen eine raffinierte Aussicht auf weniger bekannte Techniken und neue Anwendungen. Weiterf{\"u}hrende Exkurse zum Meeting-Management und zur Online-Moderation runden den Anwendungshorizont ab. Ob in Beruf, Studium oder Ehrenamt - derart ausgestattet gelingen Ihre eigene sowie die Entwicklung Ihres Teams durch zielf{\"u}hrende Moderationen.}, language = {de} } @incollection{Golland2022, author = {Golland, Alexander}, title = {Kommentierung von Artikel 94 bis 99 Datenschutz-Grundverordnung}, series = {DSGVO - BDSG - TTDSG: Datenschutzgrundverordnung - Bundesdatenschutzgesetz - Telekommunikation-Telemedien-Datenschutzgesetz}, booktitle = {DSGVO - BDSG - TTDSG: Datenschutzgrundverordnung - Bundesdatenschutzgesetz - Telekommunikation-Telemedien-Datenschutzgesetz}, editor = {Taeger, J{\"u}rgen and Gabel, Detlev}, edition = {4., neu bearbeitete Auflage. 2022}, publisher = {Fachmedien Recht und Wirtschaft}, address = {Frankfurt am Main}, isbn = {978-3-8005-1760-2}, pages = {1575 -- 1621}, year = {2022}, abstract = {Das Werk kommentiert leicht verst{\"a}ndlich, aktuell und praxisnah die DSGVO sowie das BDSG und - neu - auch das TTDSG (Telekommunikation-Telemedien-Datenschutzgesetz). Verantwortliche erhalten damit eine umfassende Darstellung mit Handlungsempfehlungen zum gesamten neuen Datenschutzrecht. Betriebliche Datenschutzbeauftragte k{\"o}nnen sich an den fundierten Kommentierungen orientieren, in denen Literatur und Rechtsprechung aktuell ber{\"u}cksichtigt wurden.}, language = {de} } @article{TopcuMadabhushiStaat2022, author = {Top{\c{c}}u, Murat and Madabhushi, Gopal S.P. and Staat, Manfred}, title = {A generalized shear-lag theory for elastic stress transfer between matrix and fibres having a variable radius}, series = {International Journal of Solids and Structures}, volume = {239-240}, journal = {International Journal of Solids and Structures}, number = {Art. No. 111464}, publisher = {Elsevier}, address = {New York, NY}, issn = {0020-7683}, doi = {10.1016/j.ijsolstr.2022.111464}, year = {2022}, abstract = {A generalized shear-lag theory for fibres with variable radius is developed to analyse elastic fibre/matrix stress transfer. The theory accounts for the reinforcement of biological composites, such as soft tissue and bone tissue, as well as for the reinforcement of technical composite materials, such as fibre-reinforced polymers (FRP). The original shear-lag theory proposed by Cox in 1952 is generalized for fibres with variable radius and with symmetric and asymmetric ends. Analytical solutions are derived for the distribution of axial and interfacial shear stress in cylindrical and elliptical fibres, as well as conical and paraboloidal fibres with asymmetric ends. Additionally, the distribution of axial and interfacial shear stress for conical and paraboloidal fibres with symmetric ends are numerically predicted. The results are compared with solutions from axisymmetric finite element models. A parameter study is performed, to investigate the suitability of alternative fibre geometries for use in FRP.}, language = {en} } @article{Golland2022, author = {Golland, Alexander}, title = {Aufsicht und Rechtsdurchsetzung bei unzul{\"a}ssigem Einsatz von Cookies \& Co. unter Geltung des TTDSG}, series = {DSB Datenschutz-Berater}, volume = {46}, journal = {DSB Datenschutz-Berater}, number = {1}, publisher = {Deutscher Fachverlag GmbH}, address = {Frankfurt a.M.}, isbn = {0170-7256}, pages = {14 -- 16}, year = {2022}, language = {de} } @article{MandekarHollandThielenetal.2022, author = {Mandekar, Swati and Holland, Abigail and Thielen, Moritz and Behbahani, Mehdi and Melnykowycz, Mark}, title = {Advancing towards Ubiquitous EEG, Correlation of In-Ear EEG with Forehead EEG}, series = {Sensors}, volume = {22}, journal = {Sensors}, number = {4}, publisher = {MDPI}, address = {Basel}, issn = {1424-8220}, doi = {10.3390/s22041568}, pages = {1 -- 19}, year = {2022}, abstract = {Wearable EEG has gained popularity in recent years driven by promising uses outside of clinics and research. The ubiquitous application of continuous EEG requires unobtrusive form-factors that are easily acceptable by the end-users. In this progression, wearable EEG systems have been moving from full scalp to forehead and recently to the ear. The aim of this study is to demonstrate that emerging ear-EEG provides similar impedance and signal properties as established forehead EEG. EEG data using eyes-open and closed alpha paradigm were acquired from ten healthy subjects using generic earpieces fitted with three custom-made electrodes and a forehead electrode (at Fpx) after impedance analysis. Inter-subject variability in in-ear electrode impedance ranged from 20 kΩ to 25 kΩ at 10 Hz. Signal quality was comparable with an SNR of 6 for in-ear and 8 for forehead electrodes. Alpha attenuation was significant during the eyes-open condition in all in-ear electrodes, and it followed the structure of power spectral density plots of forehead electrodes, with the Pearson correlation coefficient of 0.92 between in-ear locations ELE (Left Ear Superior) and ERE (Right Ear Superior) and forehead locations, Fp1 and Fp2, respectively. The results indicate that in-ear EEG is an unobtrusive alternative in terms of impedance, signal properties and information content to established forehead EEG.}, language = {en} } @article{DefosseKleinschmidtSchmutzetal.2022, author = {Defosse, Jerome and Kleinschmidt, Joris and Schmutz, Axel and Loop, Torsten and Staat, Manfred and Gatzweiler, Karl-Heinz and Wappler, Frank and Schieren, Mark}, title = {Dental strain on maxillary incisors during tracheal intubation with double-lumen tubes and different laryngoscopy techniques - a blinded manikin study}, series = {Journal of Cardiothoracic and Vascular Anesthesia}, volume = {36}, journal = {Journal of Cardiothoracic and Vascular Anesthesia}, number = {8, Part B}, publisher = {Elsevier}, address = {New York, NY}, issn = {1053-0770}, doi = {10.1053/j.jvca.2022.02.017}, pages = {3021 -- 3027}, year = {2022}, language = {en} } @article{RuebbelkeVoegeleGrajewskietal.2022, author = {R{\"u}bbelke, Dirk and V{\"o}gele, Stefan and Grajewski, Matthias and Zobel, Luzy}, title = {Hydrogen-based steel production and global climate protection: An empirical analysis of the potential role of a European cross border adjustment mechanism}, series = {Journal of Cleaner Production}, volume = {380}, journal = {Journal of Cleaner Production}, number = {Part 2, Art. Nr.:135040}, publisher = {Elsevier}, issn = {0959-6526}, doi = {10.1016/j.jclepro.2022.135040}, year = {2022}, abstract = {The European Union's aim to become climate neutral by 2050 necessitates ambitious efforts to reduce carbon emissions. Large reductions can be attained particularly in energy intensive sectors like iron and steel. In order to prevent the relocation of such industries outside the EU in the course of tightening environmental regulations, the establishment of a climate club jointly with other large emitters and alternatively the unilateral implementation of an international cross-border carbon tax mechanism are proposed. This article focuses on the latter option choosing the steel sector as an example. In particular, we investigate the financial conditions under which a European cross border mechanism is capable to protect hydrogen-based steel production routes employed in Europe against more polluting competition from abroad. By using a floor price model, we assess the competitiveness of different steel production routes in selected countries. We evaluate the climate friendliness of steel production on the basis of specific GHG emissions. In addition, we utilize an input-output price model. It enables us to assess impacts of rising cost of steel production on commodities using steel as intermediates. Our results raise concerns that a cross-border tax mechanism will not suffice to bring about competitiveness of hydrogen-based steel production in Europe because the cost tends to remain higher than the cost of steel production in e.g. China. Steel is a classic example for a good used mainly as intermediate for other products. Therefore, a cross-border tax mechanism for steel will increase the price of products produced in the EU that require steel as an input. This can in turn adversely affect competitiveness of these sectors. Hence, the effects of higher steel costs on European exports should be borne in mind and could require the cross-border adjustment mechanism to also subsidize exports.}, language = {en} } @misc{SteuerDankertBernhardLangolfetal.2022, author = {Steuer-Dankert, Linda and Bernhard, Sebastian and Langolf, Jessica and Leicht-Scholten, Carmen}, title = {Managing change and acceptance of digitalization strategies - Implementing the vision of „Internet of Production" (IoP) in existing corporate structures}, series = {Textile Impulse f{\"u}r die Zukunft: Aachen-Dresden-Denkendorf International Textile Conference 2022 : 1. - 2. Dezember 2022, Eurogress Aachen}, journal = {Textile Impulse f{\"u}r die Zukunft: Aachen-Dresden-Denkendorf International Textile Conference 2022 : 1. - 2. Dezember 2022, Eurogress Aachen}, pages = {153 -- 153}, year = {2022}, abstract = {The vision of the Internet of Production is to enable a new level of crossdomain collaboration by providing semantically adequate and context-aware data from production, development \& usage in real-time.}, language = {en} } @book{BundrockKremersPankoketal.2022, author = {Bundrock, Ronja and Kremers, Nico and Pankok, Lennard and Weisheit, Theresa Maria and Spoede, Jasper}, title = {Aachener Online-Schriften Wirtschaft und Recht. Band 5. 02/2022}, editor = {Kroll-Ludwigs, Kathrin and Bernecker, Andreas and Bassen-Metz, Yasmine 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 = {356 Seiten}, year = {2022}, abstract = {Inhaltsverzeichnis - Bachelorarbeiten 1. Testamentsgestaltung bei Patchworkfamilien - L{\"o}sungsans{\"a}tze f{\"u}r typische Praxisprobleme unter Ber{\"u}cksichtigung der Interessenlagen der Parteien - Ronja Bundrock 4 - 58 2. Die Haftung des AG-Vorstands gegen{\"u}ber der Gesellschaft in unterneh- mensinternen und -externen Krisen - Nico Kremers 59 - 122 3. The Relationship of the Ex-Ante Uncertainty about the Value of a Stock and its IPO Underpricing - An Analysis of the German Market - Lennard Pankok 123 - 179 4. Attractiveness Bias in Venture Capital - An Analysis of Investor Decision Making in "Die H{\"o}hle der L{\"o}wen" - Theresa Maria Weisheit 180 - 242 Inhaltsverzeichnis - Masterarbeiten Erh{\"o}hung der Energieautarkie in der Backbranche - Anwendung von bidi- rektionalem Laden und dessen Auswirkungen auf die Gesch{\"a}ftsprozesse und Informationssysteme - Jasper Spoede 243 - 355}, language = {de} } @masterthesis{Keller2022, type = {Bachelor Thesis}, author = {Keller, Simon Mark}, title = {Risikoanalyse einer bordautonomen Schienenfahrzeugortung mittels GNSS}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {57 Seiten}, year = {2022}, abstract = {Bei Schienenfahrzeugen, die mit dem Zugsicherungssystem ETCS betrieben sind, wird die Odometrie durch eine diskrete Ortung mittels physischen Balisen zur{\"u}ckgesetzt. Diese Arbeit befasst sich mit der Innovation von virtuellen Balisen. Virtuelle Balisen, k{\"o}nnen eingesetzt werden, um physische, im Gleisbett montierte Balisen zu ersetzen. Durch den Einsatz von virtuellen Balisen soll der Infrastrukturausbau von ETCS vorangetrieben werden, indem sie als virtuelle Komponente auf Schienenfahrzeugen eingesetzt werden. Im Rahmen dieser Arbeit wird die Fragestellung beantwortet, ob eine bordautonome Zugortung mittels virtuellen Balisen in einem ausgew{\"a}hlten Szenario mit einem akzeptablen Risiko verbunden ist? Das Szenario besteht aus einem Schienenfahrzeug, welches mit dem Zugsicherungssystem ETCS Level 2 auf einer eingleisigen Nebenstrecke betreiben wird. Hierzu werden zun{\"a}chst die Grundlagen von ETCS und der satellitenbasierten Ortung erl{\"a}utert. Des Weiteren werden die Grundlagen des CSM Prozesses und der expliziten Risikoabsch{\"a}tzung eingef{\"u}hrt. Aufbauend auf diesen Grundlagen wird der CSM Prozess angewandt und dabei eine Systemdefinition mit den Schnittstellen des Systems zur Umwelt erstellt. Mit der Hazop-Methode werden die Gef{\"a}hrdungen der Schnittstellen erfasst und beurteilt. Die sicherheitsrelevanten Gef{\"a}hrdungen werden in einer FMEA bewertet. In der folgenden Diskussion werden sicherheitsrelevante Gef{\"a}hrdungen nochmals betrachtet. Das Ergebnis der Arbeit ist, dass im ausgew{\"a}hlten Szenario, unter der Verwendung der CSM-Prozesse und der industriell anerkannten Methoden Hazop und FMEA, die Integration der Board-autonomen-Ortung mit einem akzeptablen Risiko verbunden ist.}, language = {de} } @masterthesis{Wabner2022, type = {Bachelor Thesis}, author = {Wabner, Magnus}, title = {Aroux}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {95 Seiten}, year = {2022}, abstract = {Aeroux ist eine Formstudie {\"u}ber die Gestalt einer Luftschiffgondel. Luftschiffe bzw. Zeppeline werden oft mit dem Ungl{\"u}ck der Hindenburg in Lakehurst in Verbindung gebracht. Aeroux versucht diese Assoziation zu {\"u}berwinden und Luftschiffe in der Gegenwart zu verankern. Durch die gezielte, psychologisch inspirierte Gestaltung soll Sicherheit und Ruhe vermittelt werden, sollen spezifische Assoziationen geweckt werden, die weg f{\"u}hren von Bildern vergangener Tage eines brennenden Luftschiffs, um so Zeppeline als klimafreundlichere Alternative zum Flugzeug wieder ins Spiel zu bringen. Aeroux ist ein hybrides Verkehrsmittel, dass in der Lage ist, sowohl G{\"u}ter als auch Personen in verschiedenen Szenarien zu transportieren. Zeppeline bauchen keine befestigten Landebahnen oder Pisten. Regionen, die {\"u}ber Straßen schwer zug{\"a}nglich sind, k{\"o}nnen so in den Warenhandel integriert werden. Gleichermaßen k{\"o}nnen aber auch Meschen in Regionen bef{\"o}rdert werden, die durch Straßen oder Landebahnen nicht oder unzureichend erschlossen sind. Dar{\"u}ber hinaus kann Aeroux ein Ansatz sein die Unvertr{\"a}glichkeit von Fliegen und Klimaschutz aufzul{\"o}sen. Nicht zuletzt liegt in der gem{\"a}chlichen Art der Bewegung ein besonderer Zauber. Reisen k{\"o}nnten einen neuen Charakter erhalten: durch die großen Fensterfronten und die geringe Flugh{\"o}he k{\"o}nnen Landschaften auf der Reise neu wahrgenommen werden, der Weg wird wieder Teil des Reisens. Die Arbeit ist in erster Linie eine Auseinandersetzung mit der Form. Wie wirkt Form, wie lassen sich Assoziationen wecken, lenken, leiten. Wie kann technischer Anspruch, gesellschaftliche Bedingung, {\"o}kologisches Bewusstsein und nicht zuletzt Genuss in einem Objekt resultieren. Digitale und analoge Fertigung spielen im Zuge der Arbeit ineinander. So entstand das Design der Gondel, nach ersten h{\"a}ndischen Skizzen, digital. Das Model der Gondel wurde aus diesen Daten 3D gedruckt und die Darstellung der Tragh{\"u}lle ebenfalls auf Grundlage dieser Daten gelasert. Aeroux m{\"o}chte Lust auf alternatives Sehen, Denken und Handeln machen. Es gilt viel zu bewegen.}, language = {de} } @masterthesis{Ebner2022, type = {Bachelor Thesis}, author = {Ebner, Nina}, title = {Inside Out : a personal visualisation of aphantasia}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {177 Seiten}, year = {2022}, abstract = {Das Projekt behandelt die Thematik von Aphantasie, welche die „Abwesenheit freiwilliger, visuell erzeugter Bilder" (Fußnote) im Kopf beschreibt. Das Ziel der Arbeit ist die Aufkl{\"a}rung und Sensibilisierung Außenstehender. Durch eine reine faktenbasierte Betrachtungsweise ist dies kaum m{\"o}glich, weshalb ein visueller Ansatz besser geeignet ist. Das Projekt lokalisiert sich in den Bereichen Fotografie \& Ausstellung. Die Fotografien stehen f{\"u}r eine beispielhafte Visualisierung der subjektiven Wahrnehmung der Gestalterin - das Ausstellungsobjekt, eine begehbare Camera obscura, repr{\"a}sentiert das Innere ihres Kopfes. Die Aufnahmen wurden bei Nacht mit verschiedenen Lichtern innerhalb der Camera obscura abgebildet und abgelichtet. Betrachter:innen der Ausarbeitung sollen einen weiteren Blickwinkel auf die Thematik, die Sichtweise und ihre Auswirkungen erhalten - auch im Kontext und der Arbeit als Designer:in. Fußnote: https://www.psychologie.uni-bonn.de/de/unser-institut/abteilungen/differentielle-biologische-psychologie/\%20\%20Aphantasia\%20Research\%20Project\%20Bonn\%20}, language = {de} } @masterthesis{Horvath2022, type = {Bachelor Thesis}, author = {Horvath, Nicolas}, title = {Neues Corporate Design f{\"u}r das Rautenstrauch Joest Museum K{\"o}ln}, publisher = {FH Aachen}, address = {Aachen}, pages = {138}, year = {2022}, abstract = {Der Mensch in seinen Welten - das Konzept des Rautenstrauch Joest Museums verfolgt den Ansatz des Kulturvergleichs und strebt im Zuge dessen die Betonung der Ebenb{\"u}rtigkeit aller Kulturen an. Die Sammlung unterteilt sich nicht - wie gewohnt - anhand geografischer Gesichtspunkte, sondern behandelt Themen, die Menschen auf der ganzen Welt besch{\"a}ftigen. Das in dieser Arbeit gestaltete neue Erscheinungsbild greift den ver{\"a}nderten gesellschaftlichen Stellenwert von ethnologischen Museen auf und positioniert das Museum als aktiven Diskussionsteilnehmer im Zuge des Postkolonialismus. Das entwickelte Key-Visual aus eigener Schrift, einheitlicher Rastersystematik und pr{\"a}gnantem Farbkonzept gibt einen Einblick darin, wie Menschen fr{\"u}her probiert haben, ihre Welt zu verstehen und sie zu erschließen.}, language = {de} } @inproceedings{BlaneckBornheimGriegeretal.2022, author = {Blaneck, Patrick Gustav and Bornheim, Tobias and Grieger, Niklas and Bialonski, Stephan}, title = {Automatic readability assessment of german sentences with transformer ensembles}, series = {Proceedings of the GermEval 2022 Workshop on Text Complexity Assessment of German Text}, booktitle = {Proceedings of the GermEval 2022 Workshop on Text Complexity Assessment of German Text}, publisher = {Association for Computational Linguistics}, address = {Potsdam}, doi = {10.48550/arXiv.2209.04299}, pages = {57 -- 62}, year = {2022}, abstract = {Reliable methods for automatic readability assessment have the potential to impact a variety of fields, ranging from machine translation to self-informed learning. Recently, large language models for the German language (such as GBERT and GPT-2-Wechsel) have become available, allowing to develop Deep Learning based approaches that promise to further improve automatic readability assessment. In this contribution, we studied the ability of ensembles of fine-tuned GBERT and GPT-2-Wechsel models to reliably predict the readability of German sentences. We combined these models with linguistic features and investigated the dependence of prediction performance on ensemble size and composition. Mixed ensembles of GBERT and GPT-2-Wechsel performed better than ensembles of the same size consisting of only GBERT or GPT-2-Wechsel models. Our models were evaluated in the GermEval 2022 Shared Task on Text Complexity Assessment on data of German sentences. On out-of-sample data, our best ensemble achieved a root mean squared error of 0:435.}, language = {en} } @masterthesis{Kannengiesser2022, type = {Bachelor Thesis}, author = {Kannengießer, Justine}, title = {Vom Airbag zum Rucksack mit Upcycling : Kampagne zur Steigerung der Bekanntheit der Marke Airpaq}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {44 Seiten}, year = {2022}, abstract = {In der Automobilindustrie entsteht ein enormes Ausmaß an Abfall. Genau an dieser Stelle greift das K{\"o}lner Start-up Airpaq ein, das nachhaltige Rucks{\"a}cke und Accessoires aus Autoschrott unter fairen Arbeitsbedingungen in der EU herstellt. Das Ziel der Kampagne ist es, die Markenbekanntheit zu steigern und eine tiefergreifende und lang anhaltende Verbindung zur jungen Zielgruppe aufzubauen. Genau so, wie Airpaq den Taschen-Markt revolutioniert, stellt auch die junge Zielgruppe immer wieder Altbew{\"a}hrtes infrage. Mit der „HOLYSCRAP"-Bewegung ruft die Kampagne Upcycling-Abenteuer ins Leben. Die Kampagne ermutigt dazu, Teil der Upcycling-Community zu werden, um immer wieder neu und anders "schrottastische" Erlebnisse zu entdecken. So soll eingeladen werden, nicht nur beim Griff zur Tasche mal etwas Neues auszuprobieren, sondern auch bei allen gemeinsamen Aktivit{\"a}ten, die man mit Airpaq erlebt.}, language = {de} } @masterthesis{Toma2022, type = {Bachelor Thesis}, author = {Toma, Paul}, title = {Scriptum : Geochronologische Darstellung der Schriftentstehung vom 33. Jh. v. Chr. bis heute}, publisher = {FH Aachen}, address = {Aachen}, pages = {159 Seiten}, year = {2022}, abstract = {Scriptum ist ein Interface mit Installationscharakter, welches die geschichtliche Entstehung von Schriftsystemen aus einer geochronologischen Perspektive darstellt. Die Installation wurde haupts{\"a}chlich f{\"u}r Museumsausstellungen konzipiert und besteht aus einer Wandprojektion, die durch iPads im Raum von mehreren Nutzern gleichzeitig gesteuert werden kann. Auf der Projektion sind alle 145 von Noto Sans unterst{\"u}tzten Schriftsysteme zu finden, die nach ihrer {\"o}rtlichen Entstehung auf einer Weltkarte platziert wurden. Die Arbeit beruht auf dem wissenschaftlichen Datensatz aus dem Projekt „The World's Writing Systems" aufrufbar unter www.worldswritingsystems.org. Neben dem Informierungszweck dient die Installation auch als ein Ausrufezeichen f{\"u}r die Idee, dass Schrift ein wichtiger Aspekt unseres Kulturerbes ist und als ein Spiegel f{\"u}r die Evolution der Menschheit betrachtet werden kann.}, language = {de} } @masterthesis{Meesters2022, type = {Bachelor Thesis}, author = {Meesters, Elena}, title = {Gestaltung eines h{\"a}uslichen Telemonitoringsystems zur Prognose kardialer Dekompensation}, publisher = {FH Aachen}, address = {Aachen}, pages = {113 Seiten}, year = {2022}, abstract = {Herzinsuffizienz ist eine der h{\"a}ufigsten Herzerkrankungen in Deutschland. Sie ist fortschreitend und nicht heilbar. Der Krankheitsverlauf ist gepr{\"a}gt von pl{\"o}tzlichen, z.T. lebensbedrohlichen Verschlechterungen und Krankenhauseinweisungen, nach denen die Leistung des Herzen vermindert bleibt. Diese Dekompensationen lassen sich bisher im heimischen Umfeld nicht durch Messwerte vorhersehen. Dieses Ger{\"a}t bestimmt die Fl{\"u}ssigkeitsansammlungen in der Lunge, die ein mittelfristiges Symptom einer Dekompensation sind. Außerdem misst es {\"u}ber einen Hautsensor die im Schweiß enthaltene Menge eines Proteins, das bei {\"U}berdehnung des Herzmuskels vermehrt im Blutplasma zu finden ist. So k{\"o}nnen Dekompensationen bis zu zwei Wochen vor einem akuten Ereignis detektiert und behandelt werden. Außerdem gibt es tagesformabh{\"a}ngige Tipps f{\"u}r die Alltagsgestaltung mit der Erkrankung.}, language = {de} } @article{SchuellerRuhlDinstuehlerSengeretal.2022, author = {Sch{\"u}ller-Ruhl, Aaron and Dinst{\"u}hler, Leonard and Senger, Thorsten and Bergfeld, Stefan and Ingenhag, Christian and Fleischhaker, Robert}, title = {Direct fabrication of arbitrary phase masks in optical glass via ultra-short pulsed laser writing of refractive index modifications}, series = {Applied Physics B}, volume = {128}, journal = {Applied Physics B}, number = {Article number: 208}, editor = {Mackenzie, Jacob}, publisher = {Springer}, address = {Berlin}, issn = {1432-0649 (Online)}, doi = {10.1007/s00340-022-07928-2}, pages = {1 -- 11}, year = {2022}, abstract = {We study the possibility to fabricate an arbitrary phase mask in a one-step laser-writing process inside the volume of an optical glass substrate. We derive the phase mask from a Gerchberg-Saxton-type algorithm as an array and create each individual phase shift using a refractive index modification of variable axial length. We realize the variable axial length by superimposing refractive index modifications induced by an ultra-short pulsed laser at different focusing depth. Each single modification is created by applying 1000 pulses with 15 μJ pulse energy at 100 kHz to a fixed spot of 25 μm diameter and the focus is then shifted axially in steps of 10 μm. With several proof-of-principle examples, we show the feasibility of our method. In particular, we identify the induced refractive index change to about a value of Δn=1.5⋅10-3. We also determine our current limitations by calculating the overlap in the form of a scalar product and we discuss possible future improvements.}, language = {en} } @article{EggertKreuzer2022, author = {Eggert, Mathias and Kreuzer, Vincent}, title = {Sprachsteuerung im Gesundheitswesen - Anforderungen und Auswahl geeigneter Anbieter}, series = {HMD Praxis der Wirtschaftsinformatik}, volume = {59}, journal = {HMD Praxis der Wirtschaftsinformatik}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {2198-2775}, issn = {1436-3011}, doi = {10.1365/s40702-022-00919-z}, pages = {1640 -- 1652}, year = {2022}, abstract = {Das Gesundheitswesen ist konfrontiert mit steigenden Kosten und einer immer schwieriger werdenden Personalsituation. Zeitgleich versprechen moderne Sprachsteuerungssysteme Prozesse in Arztpraxen und Krankenh{\"a}usern zu verschlanken und Vorg{\"a}nge zu beschleunigen. Dennoch wird derzeit der Einsatz von Sprachsteuerungssystemen in Arztpraxen oder Krankenh{\"a}usern nur selten beobachtet, was auch an den besonders strengen Datenschutzauflagen der Datenschutzgrundverordnung (DSGVO) liegt. Dar{\"u}ber hinaus wirft die niedrige Nutzungsrate die Frage nach den konkreten Anforderungen und ihrer Umsetzbarkeit auf, was durch den vorliegenden Beitrag adressiert wird, indem die Ergebnisse von Interviews mit acht medizinischen Fachexperten ausgewertet werden. Erg{\"a}nzend wird die technische Umsetzbarkeit einzelner Anforderungen mit unterschiedlichen Cloud-Anbietern erprobt.}, language = {de} } @masterthesis{IncemanCremer2022, type = {Bachelor Thesis}, author = {Inceman Cremer, Suzan}, title = {Kouyou : Ort im Raum}, publisher = {FH Aachen}, address = {Aachen}, pages = {85 Seiten}, year = {2022}, abstract = {Selbstliebe, der Moment der Ruhe, sich eine mentale Pause erlauben und von allem bewusst abzuschalten, sind aktuelle Themen unserer Gesellschaft. Die Zeit, in der wir leben, bewegt sich in einer Geschwindigkeit, die alle unsere Sinne {\"u}berlastet und uns nicht mehr erlaubt, selbst zuzuh{\"o}ren oder volle Momente der Ruhe zu erleben. Thema der Bachelorarbeit ist der Entwurf eines Sitzm{\"o}bels, welches inspiriert ist durch die sakralische Architektur. Der Stuhl soll das Gef{\"u}hl von Umformung und Leichtigkeit vermitteln. Er ist aus Eiche gebaut und unterst{\"u}tzt den Menschen in seiner bewussten Sitzhaltung. Die Eiche ist ein Baum, der f{\"u}r Kraft, Durchhalteverm{\"o}gen und Gerechtigkeit steht. Es heißt auch, wenn man eine Eiche sieht, sie umarmen soll, da sie heilende Kr{\"a}fte hat. Hier ist aber die Eiche, die den Menschen symbolisch umarmen soll, wenn man auf ihr sitzt. Und somit spielen Architektur, M{\"o}bel und der Mensch eine spielende Rolle, und zwar ist es die menschliche Haltung im Raum.}, language = {de} } @misc{Vogt2022, type = {Master Thesis}, author = {Vogt, Lena}, title = {Arch{\"a}ologischer Restaurator : Ausstellungskonzept R{\"o}misch-Germanisches Museum K{\"o}ln}, publisher = {FH Aachen}, address = {Aachen}, pages = {23 Seiten}, year = {2022}, abstract = {Alte, geschichtsrelevante und thematisch angeordnete Objekte, welche man in den Vitrinen der Museen betrachten kann, das kennt sicher jeder. Doch wie kommen diese Artefakte eigentlich in die Vitrinen? Welche Menschen sind daf{\"u}r verantwortlich, dass wir diese Kulturg{\"u}ter bestaunen k{\"o}nnen? In diesem tempor{\"a}ren Ausstellungskonzept f{\"u}r das R{\"o}misch-Germanische Museum K{\"o}ln geht es darum, die sonst verborgene Arbeit der Restauratoren des Museums f{\"u}r die Besucher:innen sichtbar zu machen, ihnen genauere Einblicke in die Arbeit mit ihren Anforderungen zu geben und Restaurierungsprozesse auf zu zeigen. Diese Arbeit demonstriert, wie es abseits der {\"O}ffentlichkeit aussieht und wer daf{\"u}r verantwortlich ist, dass wir einen Einblick in die vergangenen Zeit erhalten k{\"o}nnen. Das Projekt zeigt eine m{\"o}gliche Bespielung des Museums, wie das Berufsbild der Restauratoren in die Dauerausstellung integriert werden k{\"o}nnte.}, language = {de} } @masterthesis{Janssen2022, type = {Bachelor Thesis}, author = {Janssen, Hanna}, title = {UMGARNT : Handarbeit als Mittel zur Festigung der emotionalen Bindung zu M{\"o}belst{\"u}cken}, publisher = {FH Aachen}, address = {Aachen}, pages = {132 Seiten}, year = {2022}, abstract = {Nach drei Jahren ist der Anblick der beigen Kommode doch etwas langweilig geworden und es steht ein Tapetenwechsel an? Das ist noch lange kein Grund, neue M{\"o}bel kaufen zu m{\"u}ssen. Mit dem „BOBBI"-Regal l{\"a}sst sich das Farbkonzept des M{\"o}belst{\"u}cks fortlaufend anpassen. Das reduzierte Grundgestell basiert auf einem einfachen Stecksystem und erm{\"o}glicht nicht nur einen schnellen, intuitiven Aufbau, sondern auch eine modulare Erweiterung des Regalsystems. Eint{\"o}nig? Nein Danke! Zeitloses, langlebiges Design muss nicht schlicht und farblos sein! Der Schl{\"u}ssel liegt in der Individualisierbarkeit. Mithilfe einer einfachen textilen Bespannungstechnik passt der Kunde das Ger{\"u}st nach seinen Vorstellungen an. Auf diese Weise kann der Charakter des M{\"o}belst{\"u}cks nicht nur farblich, sondern auch strukturell regelm{\"a}ßig ver{\"a}ndert werden und tr{\"a}gt zu einer nachhaltigen und achtsamen Raumgestaltung bei.}, language = {de} } @article{BhattaraiMayStaatetal.2022, author = {Bhattarai, Aroj and May, Charlotte Anabell and Staat, Manfred and Kowalczyk, Wojciech and Tran, Thanh Ngoc}, title = {Layer-specific damage modeling of porcine large intestine under biaxial tension}, series = {Bioengineering}, volume = {9}, journal = {Bioengineering}, number = {10, Early Access}, publisher = {MDPI}, address = {Basel}, issn = {2306-5354}, doi = {10.3390/bioengineering9100528}, pages = {1 -- 17}, year = {2022}, abstract = {The mechanical behavior of the large intestine beyond the ultimate stress has never been investigated. Stretching beyond the ultimate stress may drastically impair the tissue microstructure, which consequently weakens its healthy state functions of absorption, temporary storage, and transportation for defecation. Due to closely similar microstructure and function with humans, biaxial tensile experiments on the porcine large intestine have been performed in this study. In this paper, we report hyperelastic characterization of the large intestine based on experiments in 102 specimens. We also report the theoretical analysis of the experimental results, including an exponential damage evolution function. The fracture energies and the threshold stresses are set as damage material parameters for the longitudinal muscular, the circumferential muscular and the submucosal collagenous layers. A biaxial tensile simulation of a linear brick element has been performed to validate the applicability of the estimated material parameters. The model successfully simulates the biomechanical response of the large intestine under physiological and non-physiological loads.}, language = {en} } @article{ColomboDriraFrotscheretal.2022, author = {Colombo, Daniele and Drira, Slah and Frotscher, Ralf and Staat, Manfred}, title = {An element-based formulation for ES-FEM and FS-FEM models for implementation in standard solid mechanics finite element codes for 2D and 3D static analysis}, series = {International Journal for Numerical Methods in Engineering}, volume = {124}, journal = {International Journal for Numerical Methods in Engineering}, number = {2}, publisher = {Wiley}, address = {Chichester}, issn = {1097-0207}, doi = {10.1002/nme.7126}, pages = {402 -- 433}, year = {2022}, abstract = {Edge-based and face-based smoothed finite element methods (ES-FEM and FS-FEM, respectively) are modified versions of the finite element method allowing to achieve more accurate results and to reduce sensitivity to mesh distortion, at least for linear elements. These properties make the two methods very attractive. However, their implementation in a standard finite element code is nontrivial because it requires heavy and extensive modifications to the code architecture. In this article, we present an element-based formulation of ES-FEM and FS-FEM methods allowing to implement the two methods in a standard finite element code with no modifications to its architecture. Moreover, the element-based formulation permits to easily manage any type of element, especially in 3D models where, to the best of the authors' knowledge, only tetrahedral elements are used in FS-FEM applications found in the literature. Shape functions for non-simplex 3D elements are proposed in order to apply FS-FEM to any standard finite element.}, language = {en} } @article{KotliarOrtnerConradietal.2022, author = {Kotliar, Konstantin and Ortner, Marion and Conradi, Anna and Hacker, Patricia and Hauser, Christine and G{\"u}nthner, Roman and Moser, Michaela and Muggenthaler, Claudia and Diehl-Schmid, Janine and Priller, Josef and Schmaderer, Christoph and Grimmer, Timo}, title = {Altered retinal cerebral vessel oscillation frequencies in Alzheimer's disease compatible with impaired amyloid clearance}, series = {Neurobiology of Aging}, volume = {120}, journal = {Neurobiology of Aging}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0197-4580}, doi = {10.1016/j.neurobiolaging.2022.08.012}, pages = {117 -- 127}, year = {2022}, abstract = {Retinal vessels are similar to cerebral vessels in their structure and function. Moderately low oscillation frequencies of around 0.1 Hz have been reported as the driving force for paravascular drainage in gray matter in mice and are known as the frequencies of lymphatic vessels in humans. We aimed to elucidate whether retinal vessel oscillations are altered in Alzheimer's disease (AD) at the stage of dementia or mild cognitive impairment (MCI). Seventeen patients with mild-to-moderate dementia due to AD (ADD); 23 patients with MCI due to AD, and 18 cognitively healthy controls (HC) were examined using Dynamic Retinal Vessel Analyzer. Oscillatory temporal changes of retinal vessel diameters were evaluated using mathematical signal analysis. Especially at moderately low frequencies around 0.1 Hz, arterial oscillations in ADD and MCI significantly prevailed over HC oscillations and correlated with disease severity. The pronounced retinal arterial vasomotion at moderately low frequencies in the ADD and MCI groups would be compatible with the view of a compensatory upregulation of paravascular drainage in AD and strengthen the amyloid clearance hypothesis.}, language = {en} } @article{Maurischat2022, author = {Maurischat, Andreas}, title = {Algebraic independence of the Carlitz period and its hyperderivatives}, series = {Journal of Number Theory}, volume = {240}, journal = {Journal of Number Theory}, publisher = {Elsevier}, address = {Orlando, Fla.}, issn = {0022-314X}, doi = {10.1016/j.jnt.2022.01.006}, pages = {145 -- 162}, year = {2022}, language = {en} } @article{MolinnusJanusFangetal.2022, author = {Molinnus, Denise and Janus, Kevin Alexander and Fang, Anyelina C. and Drinic, Aleksander and Achtsnicht, Stefan and K{\"o}pf, Marius and Keusgen, Michael and Sch{\"o}ning, Michael Josef}, title = {Thick-film carbon electrode deposited onto a biodegradable fibroin substrate for biosensing applications}, series = {Physica status solidi (a)}, volume = {219}, journal = {Physica status solidi (a)}, number = {23}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1862-6319}, doi = {10.1002/pssa.202200100}, pages = {1 -- 9}, year = {2022}, abstract = {This study addresses a proof-of-concept experiment with a biocompatible screen-printed carbon electrode deposited onto a biocompatible and biodegradable substrate, which is made of fibroin, a protein derived from silk of the Bombyx mori silkworm. To demonstrate the sensor performance, the carbon electrode is functionalized as a glucose biosensor with the enzyme glucose oxidase and encapsulated with a silicone rubber to ensure biocompatibility of the contact wires. The carbon electrode is fabricated by means of thick-film technology including a curing step to solidify the carbon paste. The influence of the curing temperature and curing time on the electrode morphology is analyzed via scanning electron microscopy. The electrochemical characterization of the glucose biosensor is performed by amperometric/voltammetric measurements of different glucose concentrations in phosphate buffer. Herein, systematic studies at applied potentials from 500 to 1200 mV to the carbon working electrode (vs the Ag/AgCl reference electrode) allow to determine the optimal working potential. Additionally, the influence of the curing parameters on the glucose sensitivity is examined over a time period of up to 361 days. The sensor shows a negligible cross-sensitivity toward ascorbic acid, noradrenaline, and adrenaline. The developed biocompatible biosensor is highly promising for future in vivo and epidermal applications.}, language = {en} } @masterthesis{TrinidadAvila2022, type = {Bachelor Thesis}, author = {Trinidad Avila, Maria Alejandra}, title = {Work Habitat : Modular-skalierbare Office Markenstrategie f{\"u}r rasant wachsende Startups}, publisher = {FH Aachen}, address = {Aachen}, pages = {141 Seiten}, year = {2022}, abstract = {„Work Habitat" ist eine markenorientierte Officel{\"o}sung, die auf skalierbare Weise mit einem Start-up mitw{\"a}chst und in Kooperation mit dem Unternehmen academa GmbH entstanden ist. Diese Brand Experience f{\"o}rdert Teambuilding und Identifikation mit dem Unternehmen. Sie passt sich an die Teammitglieder an, indem sie einen ganzheitlichen Blick auf das Office-System bewahrt. Ferner stellt sie eine nahtlose Verbindung digitaler und analoger Arbeitswelten dar und bietet eine einladende Umgebung verschiedener Arten zu Arbeiten an: von Deep-Focus bis zur kooperativen Zusammenarbeit und der Anregung zwangloser Begegnungen. Die modularen Komponenten k{\"o}nnen trotz Ver{\"a}nderungen, Umz{\"u}gen oder unerwartet rasanten Entwicklungen nachhaltig und flexibel eingesetzt werden. Eine schnelllebige Welt erfordert eine angebrachte, sich ihr anpassende New-Work-Umgebung.}, language = {de} } @masterthesis{Voth2022, type = {Bachelor Thesis}, author = {Voth, Emily}, title = {KiWA : Die Garderobe f{\"u}r kleine Selbstst{\"a}ndige}, publisher = {FH Aachen}, address = {Aachen}, pages = {117 Seiten}, year = {2022}, abstract = {Kindertagesst{\"a}tten bieten Kleinkindern den Zugang zu unbeschwertem und spielerischem Lernen. Was also, wenn schon der Eingangsbereich die Reiz{\"u}berflutung bereit h{\"a}lt, der Stauraum der Entfaltung der Kinder nicht gerecht wird und ihre Eigenst{\"a}ndigkeit ungef{\"o}rdert bleibt? Es kommt zu unzufriedenen Kindern und Frustration aller Beteilligten. "KIWA" ist das Garderobensystem f{\"u}r Kinder zur St{\"a}rkung der heranwachsenden Selbstst{\"a}ndigkeit. Mithilfe von pers{\"o}nlichen Wiedererkennungsmerkmalen wird Eigenverantwortung geschult. Leicht und sicher zu erreichender Stauraum sorgt f{\"u}r Ordnung. Spielerisches lernen trotz Ordnung.}, language = {de} } @inproceedings{AmirBauckhageChircuetal.2022, author = {Amir, Malik and Bauckhage, Christian and Chircu, Alina and Czarnecki, Christian and Knopf, Christian and Piatkowski, Nico and Sultanow, Eldar}, title = {What can we expect from quantum (digital) twins?}, publisher = {AIS Electronic Library (AISeL)}, pages = {1 -- 14}, year = {2022}, abstract = {Digital twins enable the modeling and simulation of real-world entities (objects, processes or systems), resulting in improvements in the associated value chains. The emerging field of quantum computing holds tremendous promise for evolving this virtualization towards Quantum (Digital) Twins (QDT) and ultimately Quantum Twins (QT). The quantum (digital) twin concept is not a contradiction in terms - but instead describes a hybrid approach that can be implemented using the technologies available today by combining classical computing and digital twin concepts with quantum processing. This paper presents the status quo of research and practice on quantum (digital) twins. It also discuses their potential to create competitive advantage through real-time simulation of highly complex, interconnected entities that helps companies better address changes in their environment and differentiate their products and services.}, language = {en} } @article{LindnerBurgerRutledgeetal.2022, author = {Lindner, Simon and Burger, Ren{\´e} and Rutledge, Douglas N. and Do, Xuan Tung and Rumpf, Jessica and Diehl, Bernd W. K. and Schulze, Margit and Monakhova, Yulia}, title = {Is the calibration transfer of multivariate calibration models between high- and low-field NMR instruments possible? A case study of lignin molecular weight}, series = {Analytical chemistry}, volume = {94}, journal = {Analytical chemistry}, number = {9}, publisher = {ACS Publications}, address = {Washington, DC}, isbn = {1520-6882}, doi = {10.1021/acs.analchem.1c05125}, pages = {3997 -- 4004}, year = {2022}, abstract = {Although several successful applications of benchtop nuclear magnetic resonance (NMR) spectroscopy in quantitative mixture analysis exist, the possibility of calibration transfer remains mostly unexplored, especially between high- and low-field NMR. This study investigates for the first time the calibration transfer of partial least squares regressions [weight average molecular weight (Mw) of lignin] between high-field (600 MHz) NMR and benchtop NMR devices (43 and 60 MHz). For the transfer, piecewise direct standardization, calibration transfer based on canonical correlation analysis, and transfer via the extreme learning machine auto-encoder method are employed. Despite the immense resolution difference between high-field and low-field NMR instruments, the results demonstrate that the calibration transfer from high- to low-field is feasible in the case of a physical property, namely, the molecular weight, achieving validation errors close to the original calibration (down to only 1.2 times higher root mean square errors). These results introduce new perspectives for applications of benchtop NMR, in which existing calibrations from expensive high-field instruments can be transferred to cheaper benchtop instruments to economize.}, language = {en} } @article{MonakhovaDiehl2022, author = {Monakhova, Yulia and Diehl, Bernd W.K.}, title = {Multinuclear NMR screening of pharmaceuticals using standardization by 2H integral of a deuterated solvent}, series = {Journal of Pharmaceutical and Biomedical Analysis}, volume = {209}, journal = {Journal of Pharmaceutical and Biomedical Analysis}, number = {Article number: 114530}, publisher = {Elsevier}, isbn = {0731-7085}, doi = {10.1016/j.jpba.2021.114530}, year = {2022}, abstract = {NMR standardization approach that uses the 2H integral of deuterated solvent for quantitative multinuclear analysis of pharmaceuticals is described. As a proof of principle, the existing NMR procedure for the analysis of heparin products according to US Pharmacopeia monograph is extended to the determination of Na+ and Cl- content in this matrix. Quantification is performed based on the ratio of a 23Na (35Cl) NMR integral and 2H NMR signal of deuterated solvent, D2O, acquired using the specific spectrometer hardware. As an alternative, the possibility of 133Cs standardization using the addition of Cs2CO3 stock solution is shown. Validation characteristics (linearity, repeatability, sensitivity) are evaluated. A holistic NMR profiling of heparin products can now also be used for the quantitative determination of inorganic compounds in a single analytical run using a single sample. In general, the new standardization methodology provides an appealing alternative for the NMR screening of inorganic and organic components in pharmaceutical products.}, language = {en} } @article{BurgerLindnerRumpfetal.2022, author = {Burger, Ren{\´e} and Lindner, Simon and Rumpf, Jessica and Do, Xuan Tung and Diehl, Bernd W.K. and Rehahn, Matthias and Monakhova, Yulia and Schulze, Margit}, title = {Benchtop versus high field NMR: Comparable performance found for the molecular weight determination of lignin}, series = {Journal of Pharmaceutical and Biomedical Analysis}, volume = {212}, journal = {Journal of Pharmaceutical and Biomedical Analysis}, number = {Article number: 114649}, publisher = {Elsevier}, address = {New York, NY}, isbn = {0731-7085}, doi = {10.1016/j.jpba.2022.114649}, year = {2022}, abstract = {Lignin is a promising renewable biopolymer being investigated worldwide as an environmentally benign substitute of fossil-based aromatic compounds, e.g. for the use as an excipient with antioxidant and antimicrobial properties in drug delivery or even as active compound. For its successful implementation into process streams, a quick, easy, and reliable method is needed for its molecular weight determination. Here we present a method using 1H spectra of benchtop as well as conventional NMR systems in combination with multivariate data analysis, to determine lignin's molecular weight (Mw and Mn) and polydispersity index (PDI). A set of 36 organosolv lignin samples (from Miscanthus x giganteus, Paulownia tomentosa and Silphium perfoliatum) was used for the calibration and cross validation, and 17 samples were used as external validation set. Validation errors between 5.6\% and 12.9\% were achieved for all parameters on all NMR devices (43, 60, 500 and 600 MHz). Surprisingly, no significant difference in the performance of the benchtop and high-field devices was found. This facilitates the application of this method for determining lignin's molecular weight in an industrial environment because of the low maintenance expenditure, small footprint, ruggedness, and low cost of permanent magnet benchtop NMR systems.}, language = {en} } @article{MonakhovaSobolevaFedotovaetal.2022, author = {Monakhova, Yulia and Soboleva, Polina M. and Fedotova, Elena S. and Musina, Kristina T. and Burmistrova, Natalia A.}, title = {Quantum chemical calculations of IR spectra of heparin disaccharide subunits}, series = {Computational and Theoretical Chemistry}, volume = {1217}, journal = {Computational and Theoretical Chemistry}, number = {Article number: 113891}, publisher = {Elsevier}, address = {New York, NY}, isbn = {2210-271X}, doi = {10.1016/j.comptc.2022.113891}, year = {2022}, abstract = {Heparin is a natural polysaccharide, which plays essential role in many biological processes. Alterations in building blocks can modify biological roles of commercial heparin products, due to significant changes in the conformation of the polymer chain. The variability structure of heparin leads to difficulty in quality control using different analytical methods, including infrared (IR) spectroscopy. In this paper molecular modelling of heparin disaccharide subunits was performed using quantum chemistry. The structural and spectral parameters of these disaccharides have been calculated using RHF/6-311G. In addition, over-sulphated chondroitin sulphate disaccharide was studied as one of the most widespread contaminants of heparin. Calculated IR spectra were analyzed with respect to specific structure parameters. IR spectroscopic fingerprint was found to be sensitive to substitution pattern of disaccharide subunits. Vibrational assignments of calculated spectra were correlated with experimental IR spectral bands of native heparin. Chemometrics was used to perform multivariate analysis of simulated spectral data.}, language = {en} } @article{HahnHebelManz2022, author = {Hahn, Geogr W. and Hebel, Christoph and Manz, W.}, title = {Die neuen Empfehlungen f{\"u}r Verkehrsnachfragemodellierung im Personenverkehr}, series = {Straßenverkehrstechnik}, volume = {66}, journal = {Straßenverkehrstechnik}, number = {10}, publisher = {Kirschbaum Verlag GmbH}, address = {Bonn}, issn = {0039-2219}, doi = {10.53184/SVT10-2022-1}, pages = {721 -- 726}, year = {2022}, abstract = {Die neu erschienenen „Empfehlungen zum Einsatz von Verkehrsnachfragemodellen f{\"u}r den Personenverkehr" liefern erstmals als Empfehlungspapier der Forschungsgesellschaft f{\"u}r Straßen- und Verkehrswesen einen umfassenden {\"U}berblick zu den verschiedenen Aspekten der Modellierung und geben dem Fachplaner konkrete Hilfestellung f{\"u}r die Konzeption von Nachfragemodellen. Das Empfehlungspapier zielt unter anderem darauf ab, die Erwartungen und das Anspruchsniveau in Hinblick auf Sachgerechtigkeit der Modelle, die erzielbare Modellqualit{\"a}t und den Detaillierungsgrad der Modellaussagen zu harmonisieren.}, language = {de} } @article{EmigHebelSchwark2022, author = {Emig, J. and Hebel, Christoph and Schwark, A.}, title = {Einsatzbereiche f{\"u}r Verkehrsnachfragemodelle}, series = {Straßenverkehrstechnik}, volume = {66}, journal = {Straßenverkehrstechnik}, number = {10}, publisher = {Kirschbaum Verlag GmbH}, address = {Bonn}, issn = {0039-2219}, doi = {10.53184/SVT10-2022-2}, pages = {727 -- 736}, year = {2022}, abstract = {In der Praxis bestehen vielf{\"a}ltige Einsatzbereiche f{\"u}r Verkehrsnachfragemodelle. Mit ihnen k{\"o}nnen Kenngr{\"o}ßen des Verkehrsangebots und der Verkehrsnachfrage f{\"u}r den heutigen Zustand wie auch f{\"u}r zuk{\"u}nftige Zust{\"a}nde bereitgestellt werden, um so die Grundlagen f{\"u}r verkehrsplanerische Entscheidungen zu liefern. Die neuen „Empfehlungen zum Einsatz von Verkehrsnachfragemodellen f{\"u}r den Personenverkehr" (EVNM-PV) (FGSV 2022) veranschaulichen anhand von typischen Planungsaufgaben, welche differenzierten Anforderungen daraus f{\"u}r die Modellkonzeption und -erstellung resultieren. Vor dem Hintergrund der konkreten Aufgabenstellung sowie deren spezifischer planerischer Anforderungen bildet die abzuleitende Modellspezifikation die verabredete Grundlage zwischen Auftraggeber und Modellersteller f{\"u}r die konkrete inhaltliche, fachliche Ausgestaltung des Verkehrsmodells.}, language = {de} } @article{KindmannKrausLaumannetal.2022, author = {Kindmann, Rolf and Kraus, Matthias and Laumann, J{\"o}rg and Vette, Jan}, title = {Verallgemeinerte Berechnungsmethode f{\"u}r in Beton eingespannte Stahlprofile - Einspanntiefen, Tragf{\"a}higkeitsnachweise und Bemessungshilfen}, series = {Stahlbau}, volume = {93}, journal = {Stahlbau}, number = {Early View}, publisher = {Ernst \& Sohn GmbH}, address = {Berlin}, issn = {1437-1049}, doi = {10.1002/stab.202200024}, pages = {1 -- 25}, year = {2022}, abstract = {St{\"u}tzen und Tr{\"a}ger aus Stahlprofilen k{\"o}nnen in Fundamente oder W{\"a}nde aus Stahlbeton einbetoniert werden. Diese Anschl{\"u}sse wirken in der Regel wie Einspannungen, die eine ausreichende Einspanntiefe erfordern. Im Folgenden wird eine verallgemeinerte Berechnungsmethode f{\"u}r in Stahlbetonkonstruktionen eingespannte Stahlprofile aus gewalzten I-Profilen, geschweißten I-Profilen, runden Hohlprofilen, eckigen Hohlprofilen und einzelligen Kastenquerschnitten vorgestellt. F{\"u}r Beanspruchungen infolge einachsiger Biegung um die starke und schwache Profilachse werden der profilabh{\"a}ngige Ansatz der Betondruckspannungen im Einspannbereich und die Ermittlung der Einspanntiefe behandelt. Unter Ber{\"u}cksichtigung der Normalkraft werden an den maßgebenden Stellen Tragf{\"a}higkeitsnachweise f{\"u}r die Stahlprofile gef{\"u}hrt. Als Erg{\"a}nzung zu den Berechnungsformeln werden Bemessungshilfen zur Verf{\"u}gung gestellt, die die Wahl der mitwirkenden Breiten und der Einspanntiefen erleichtert.}, language = {de} } @book{LaumannFeldmannFrickeletal.2022, author = {Laumann, J{\"o}rg and Feldmann, Markus and Frickel, J{\"o}rg and Krahwinkel, Manuel and Kraus, Matthias and Strangh{\"o}ner, Natalie and Ummenhofer, Thomas}, title = {Petersen Stahlbau : Grundlagen der Berechnung und baulichen Ausbildung von Stahlbauten}, edition = {5. Auflage}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-20510-2}, doi = {10.1007/978-3-658-20510-2}, pages = {XXIII, 1919 Seiten}, year = {2022}, abstract = {Die Theorie und Konstruktion der wichtigsten Bereiche der Stahlbautechnik werden von den Grundlagen her entwickelt und durch viele Beispiele praxisbezogen erl{\"a}utert. Das Buch ist aus Vorlesungen im Grund- und Vertiefungsstudium des Bauingenieurwesens entstanden. Der Inhalt wird zum Teil systematisch, zum Teil exemplarisch dargestellt. F{\"u}r Konstrukteure und Statiker in den technischen B{\"u}ros, der Beratenden Ingenieure und der Pr{\"u}f{\"a}mter enth{\"a}lt das Buch aufbereitete Berechnungsverfahren und Konstruktionsvorschl{\"a}ge in großer Zahl.}, language = {de} } @incollection{Fissabre2022, author = {Fissabre, Anke}, title = {Die Bauten des j{\"u}dischen Friedhofs an der L{\"u}tticher Straße}, series = {Der J{\"u}dische Friedhof Aachen}, booktitle = {Der J{\"u}dische Friedhof Aachen}, editor = {Dux, Holger A.}, publisher = {Mayersche Buchhandlung Aachen GmbH}, address = {Aachen}, isbn = {978-3-87519-266-7}, pages = {51 -- 69}, year = {2022}, language = {de} } @incollection{Fissabre2022, author = {Fissabre, Anke}, title = {Ein Entwurf f{\"u}r die Umnutzung der Bauten des j{\"u}dischen Friedhofs an der L{\"u}tticher Straße}, series = {Der j{\"u}dische Friedhof Aachen L{\"u}tticher Straße Aachen}, booktitle = {Der j{\"u}dische Friedhof Aachen L{\"u}tticher Straße Aachen}, editor = {Dux, Holger A.}, publisher = {Mayersche Buchhandlung Aachen GmbH}, address = {Aachen}, isbn = {978-3-87519-266-7}, pages = {71 -- 74}, year = {2022}, language = {de} } @misc{OPUS4-10302, title = {Dimensionen 1-2022: Magazin der FH Aachen University of Applied Sciences - Auf dem Weg zur Nachhaltigkeit}, address = {Aachen}, organization = {Fachhochschule Aachen}, pages = {62 Seiten}, year = {2022}, abstract = {Inhaltsverzeichnis: 06| "WIR" werden nachhaltig 10| Der Kraft-Stoff aus dem Bioreaktor 14| Energieverbrauch des Campus J{\"u}lich optimieren 16| „Eine große Hilfestellung f{\"u}r Flutopfer" 20| Von der ersten Skizze zu den Blumen in der Vase 22|Wie schl{\"a}ft es sich im All, Herr Maurer? 24| Expedition Arktis 28| Eine Frage, zwei Antworten 30| Der sch{\"o}nste Arbeitsplatz der Welt 32| Im Einklang 36| Ein Vorgeschmack auf die echte Arbeitswelt 38| Den R{\"a}tseln des Universums auf der Spur 40| Auf Umwegen in die Spitzenforschung 42| Klappe FH Aachen, die erste … Kamera l{\"a}uft! 44| Auszeit 46| „Fotografie {\"o}ffnet T{\"u}ren zu Parallelwelten" 50| Es gibt viel zu tun 52| Durch-Blick 54| Weichen stellen f{\"u}r einen ganz besonderen Job 58| Souta, Iver und der Wind 60| Die FH Aachen ist systemakkreditiert 61| Der Vulkan 62| Kopfnuss, Impressum}, language = {de} } @misc{Heining2022, type = {Master Thesis}, author = {Heining, Theresa Marie}, title = {Das Museum K{\"u}ppersm{\"u}hle : Entwicklung eines neuen Erscheinungsbildes und Orientierungssystems f{\"u}r das Museum}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {215 Seiten}, year = {2022}, abstract = {Der Raum des Museums ist kein funktionaler Ort. Er dient den Besucher:innen als Inspiration, gef{\"u}llt mit Kunst, Poesie und Konzept. Das Museum K{\"u}ppersm{\"u}hle ist dabei eine klassische White Cube Gallery mit weitl{\"a}ufigen R{\"a}umen, viel Platz f{\"u}r die Kunst und einer hochwertigen Sammlung. Es befindet sich in einem umgebauten, alten Speichergeb{\"a}ude im Duisburger Innenhafen. Im Zuge der Masterarbeit wurden ein Erscheinungsbild und Orientierungssystem f{\"u}r das Museums entwickelt. Das Gestaltungssystem ist ein Spiel von Verbindungen, die mal gradlinig, teilweise geschwungen und manchmal verdreht sind. Der geschwungene Pfeil wird hierbei zum Visual des Umwegs, des Gedankensprungs und des Entdeckens. Es ist ein Informationskonzept entstanden, das dazu einl{\"a}dt, {\"u}ber die gef{\"u}hrten Wege hinauszublicken. Es leitet digital und mittels verschiedener Printmedien durch die Ausstellung f{\"u}r moderne Kunst.}, language = {de} } @incollection{AkimbekovDigelRazzaque2022, author = {Akimbekov, Nuraly S. and Digel, Ilya and Razzaque, Mohammed S.}, title = {Role of vitamins in maintaining structure and function of intestinal microbiome}, series = {Comprehensive Gut Microbiota}, booktitle = {Comprehensive Gut Microbiota}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {978-0-12-822036-8}, doi = {10.1016/B978-0-12-819265-8.00043-7}, pages = {320 -- 334}, year = {2022}, abstract = {The recent advances in microbiology have shed light on understanding the role of vitamins beyond the nutritional range. Vitamins are critical in contributing to healthy biodiversity and maintaining the proper function of gut microbiota. The sharing of vitamins among bacterial populations promotes stability in community composition and diversity; however, this balance becomes disturbed in various pathologies. Here, we overview and analyze the ability of different vitamins to selectively and specifically induce changes in the intestinal microbial community. Some schemes and regularities become visible, which may provide new insights and avenues for therapeutic management and functional optimization of the gut microbiota.}, language = {en} } @incollection{AkimbekovDigelSherelkhanetal.2022, author = {Akimbekov, Nuraly S. and Digel, Ilya and Sherelkhan, Dinara K. and Razzaque, Mohammed S.}, title = {Vitamin D and Phosphate Interactions in Health and Disease}, series = {Phosphate Metabolism}, booktitle = {Phosphate Metabolism}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-91621-3}, doi = {10.1007/978-3-030-91623-7_5}, pages = {37 -- 46}, year = {2022}, abstract = {Vitamin D plays an essential role in calcium and inorganic phosphate (Pi) homeostasis, maintaining their optimal levels to assure adequate bone mineralization. Vitamin D, as calcitriol (1,25(OH)2D), not only increases intestinal calcium and phosphate absorption but also facilitates their renal reabsorption, leading to elevated serum calcium and phosphate levels. The interaction of 1,25(OH)2D with its receptor (VDR) increases the efficiency of intestinal absorption of calcium to 30-40\% and phosphate to nearly 80\%. Serum phosphate levels can also influence 1,25 (OH)2D and fibroblast growth factor 23 (FGF23) levels, i.e., higher phosphate concentrations suppress vitamin D activation and stimulate parathyroid hormone (PTH) release, while a high FGF23 serum level leads to reduced vitamin D synthesis. In the vitamin D-deficient state, the intestinal calcium absorption decreases and the secretion of PTH increases, which in turn causes the stimulation of 1,25(OH)2D production, resulting in excessive urinary phosphate loss. Maintenance of phosphate homeostasis is essential as hyperphosphatemia is a risk factor of cardiovascular calcification, chronic kidney diseases (CKD), and premature aging, while hypophosphatemia is usually associated with rickets and osteomalacia. This chapter elaborates on the possible interactions between vitamin D and phosphate in health and disease.}, language = {en} } @article{MolinnusIkenJohnenetal.2022, author = {Molinnus, Denise and Iken, Heiko and Johnen, Anna Lynn and Richstein, Benjamin and Hellmich, Lena and Poghossian, Arshak and Knoch, Joachim and Sch{\"o}ning, Michael Josef}, title = {Miniaturized pH-Sensitive Field-Effect Capacitors with Ultrathin Ta₂O₅ Films Prepared by Atomic Layer Deposition}, series = {physica status solidi (a) applications and materials science}, volume = {219}, journal = {physica status solidi (a) applications and materials science}, number = {8}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1862-6319}, doi = {10.1002/pssa.202100660}, pages = {7 Seiten}, year = {2022}, abstract = {Miniaturized electrolyte-insulator-semiconductor capacitors (EISCAPs) with ultrathin gate insulators have been studied in terms of their pH-sensitive sensor characteristics: three different EISCAP systems consisting of Al-p-Si-Ta2O5(5 nm), Al-p-Si-Si3N4(1 or 2 nm)-Ta2O5 (5 nm), and Al-p-Si-SiO2(3.6 nm)-Ta2O5(5 nm) layer structures are characterized in buffer solution with different pH values by means of capacitance-voltage and constant capacitance method. The SiO2 and Si3N4 gate insulators are deposited by rapid thermal oxidation and rapid thermal nitridation, respectively, whereas the Ta2O5 film is prepared by atomic layer deposition. All EISCAP systems have a clear pH response, favoring the stacked gate insulators SiO2-Ta2O5 when considering the overall sensor characteristics, while the Si3N4(1 nm)-Ta2O5 stack delivers the largest accumulation capacitance (due to the lower equivalent oxide thickness) and a higher steepness in the slope of the capacitance-voltage curve among the studied stacked gate insulator systems.}, language = {en} } @article{BhattaraiHorbachStaatetal.2022, author = {Bhattarai, Aroj and Horbach, Andreas and Staat, Manfred and Kowalczyk, Wojciech and Tran, Thanh Ngoc}, title = {Virgin passive colon biomechanics and a literature review of active contraction constitutive models}, series = {Biomechanics}, volume = {2}, journal = {Biomechanics}, number = {2}, publisher = {MDPI}, address = {Basel}, issn = {2673-7078}, doi = {10.3390/biomechanics2020013}, pages = {138 -- 157}, year = {2022}, abstract = {The objective of this paper is to present our findings on the biomechanical aspects of the virgin passive anisotropic hyperelasticity of the porcine colon based on equibiaxial tensile experiments. Firstly, the characterization of the intestine tissues is discussed for a nearly incompressible hyperelastic fiber-reinforced Holzapfel-Gasser-Ogden constitutive model in virgin passive loading conditions. The stability of the evaluated material parameters is checked for the polyconvexity of the adopted strain energy function using positive eigenvalue constraints of the Hessian matrix with MATLAB. The constitutive material description of the intestine with two collagen fibers in the submucosal and muscular layer each has been implemented in the FORTRAN platform of the commercial finite element software LS-DYNA, and two equibiaxial tensile simulations are presented to validate the results with the optical strain images obtained from the experiments. Furthermore, this paper also reviews the existing models of the active smooth muscle cells, but these models have not been computationally studied here. The review part shows that the constitutive models originally developed for the active contraction of skeletal muscle based on Hill's three-element model, Murphy's four-state cross-bridge chemical kinetic model and Huxley's sliding-filament hypothesis, which are mainly used for arteries, are appropriate for numerical contraction numerical analysis of the large intestine.}, language = {en} } @article{ValeroBungErpicumetal.2022, author = {Valero, Daniel and Bung, Daniel B. and Erpicum, Sebastien and Peltier, Yann and Dewals, Benjamin}, title = {Unsteady shallow meandering flows in rectangular reservoirs: a modal analysis of URANS modelling}, series = {Journal of Hydro-environment Research}, journal = {Journal of Hydro-environment Research}, number = {In Press}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1570-6443}, doi = {10.1016/j.jher.2022.03.002}, year = {2022}, abstract = {Shallow flows are common in natural and human-made environments. Even for simple rectangular shallow reservoirs, recent laboratory experiments show that the developing flow fields are particularly complex, involving large-scale turbulent structures. For specific combinations of reservoir size and hydraulic conditions, a meandering jet can be observed. While some aspects of this pseudo-2D flow pattern can be reproduced using a 2D numerical model, new 3D simulations, based on the unsteady Reynolds-Averaged Navier-Stokes equations, show consistent advantages as presented herein. A Proper Orthogonal Decomposition was used to characterize the four most energetic modes of the meandering jet at the free surface level, allowing comparison against experimental data and 2D (depth-averaged) numerical results. Three different isotropic eddy viscosity models (RNG k-ε, k-ε, k-ω) were tested. The 3D models accurately predicted the frequency of the modes, whereas the amplitudes of the modes and associated energy were damped for the friction-dominant cases and augmented for non-frictional ones. The performance of the three turbulence models remained essentially similar, with slightly better predictions by RNG k-ε model in the case with the highest Reynolds number. Finally, the Q-criterion was used to identify vortices and study their dynamics, assisting on the identification of the differences between: i) the three-dimensional phenomenon (here reproduced), ii) its two-dimensional footprint in the free surface (experimental observations) and iii) the depth-averaged case (represented by 2D models).}, language = {en} } @article{PfaffEnningSutter2022, author = {Pfaff, Raphael and Enning, Manfred and Sutter, Stefan}, title = {A risk‑based approach to automatic brake tests for rail freight service: incident analysis and realisation concept}, series = {SN Applied Sciences}, volume = {4}, journal = {SN Applied Sciences}, number = {4}, publisher = {Springer}, address = {Cham}, issn = {2523-3971}, doi = {10.1007/s42452-022-05007-x}, pages = {1 -- 14}, year = {2022}, abstract = {This study reviews the practice of brake tests in freight railways, which is time consuming and not suitable to detect certain failure types. Public incident reports are analysed to derive a reasonable brake test hardware and communication architecture, which aims to provide automatic brake tests at lower cost than current solutions. The proposed solutions relies exclusively on brake pipe and brake cylinder pressure sensors, a brake release position switch as well as radio communication via standard protocols. The approach is embedded in the Wagon 4.0 concept, which is a holistic approach to a smart freight wagon. The reduction of manual processes yields a strong incentive due to high savings in manual labour and increased productivity.}, language = {en} } @masterthesis{Jesse2022, type = {Bachelor Thesis}, author = {Jesse, Judith}, title = {Coming to Equal Sex : eine Aufkl{\"a}rungskampagne zur Orgasmusl{\"u}cke}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {71 Seiten}, year = {2022}, abstract = {Die „Orgasmusl{\"u}cke" ist ein Begriff aus der Sexualforschung, der die Ungleichheit von Orgasmen zwischen den verschiedenen Geschlechtern und Sexualit{\"a}ten beschreibt. Sie beruht dabei vor allem auf das problematische Verst{\"a}ndnis von Sex, das durch verschiedene kulturelle Einfl{\"u}sse vermittelt wird. Um {\"u}ber diese Einfl{\"u}sse aufzukl{\"a}ren, wurde das Format „fuckfulness" konzipiert. Mithilfe von animierten Videos und darauf aufbauendem Social-Media-Content befasst sich „fuckfulness" ausf{\"u}hrlich mit allen Hintergr{\"u}nden der Orgasmusl{\"u}cke und gestaltet sexuelle Aufkl{\"a}rung neu. Durch junge und moderne Kommunikation wird das Projekt auch f{\"u}r eine j{\"u}ngere Zielgruppe unterhaltsam. Ziel ist ein neues Verst{\"a}ndnis von Sex, in dem die Bed{\"u}rfnisse der Frau gleichberechtigt neben denen des Mannes stehen und entsprechende Beachtung finden. So soll die Orgasmusl{\"u}cke schmaler werden, damit die Gleichstellung endlich auch in den eigenen vier W{\"a}nden gelebt werden kann.}, language = {de} } @masterthesis{Lauber2022, type = {Bachelor Thesis}, author = {Lauber, Nico}, title = {Kinetische Piktogramme als Visualisierung : animierte Piktogramme als Kommunikationsmittel im kulturellen Raum}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {65 Seiten}, year = {2022}, abstract = {In dieser Arbeit wurden kinetische Piktogramme als Kommunikationsmittel f{\"u}r das Stadttheater Aachen erstellt. Diese sollen als Erweiterung des bestehenden Corporate Designs ein j{\"u}ngeres Publikum zu der bestehenden Zuschauerschaft hinzugewinnen. Die Piktogramme sind dabei inhaltlich an verschiedene Auff{\"u}hrungen des Theaters angepasst und unterst{\"u}tzen die Typografie in animierten Plakaten f{\"u}r die Außenwerbung. Die Umsetzung der kinetischen Piktogramme wurde als Variable Font vollzogen. Damit l{\"a}sst sich der Schriftschnitt durch verschiedene Interpolation-Achsen nach Belieben manipulieren. Dazu werden die Zwischenschritte automatisch errechnet, was die Technik optimal f{\"u}r eine 2D-Animation macht. Anhand konkreter Anwendungsbeispiele zeigt diese Arbeit die vielen Vorteile von Variable Fonts und wirft damit einen Blick in das weite Feld ihrer spannenden M{\"o}glichkeiten, die bis dato l{\"a}ngst noch nicht voll ausgesch{\"o}pft wurden.}, language = {de} }