@incollection{RostKozica2018, author = {Rost, Martin and Kozica, Arjan}, title = {Organisationale und individuelle Kompetenzen in der digitalen Arbeitswelt - eine integrierte Betrachtung}, series = {Kompetenzen der Zukunft - Arbeit 2030 : als lernende Organisation wettbewerbsf{\"a}hig bleiben}, booktitle = {Kompetenzen der Zukunft - Arbeit 2030 : als lernende Organisation wettbewerbsf{\"a}hig bleiben}, editor = {Molina, Karl de}, publisher = {Haufe Group}, address = {Freiburg ; M{\"u}nchen}, isbn = {978-3-648-10723-2}, pages = {407 -- 422}, year = {2018}, abstract = {Unternehmen mit hohen dynamic capabilities gelingt es besser, ihre spezifische Ressourcenbasis zu ver{\"a}ndern und weiterzuentwickeln. Dies ist insbesondere in der digitalen Transformation eine entscheidende F{\"a}higkeit von Unternehmen. Individuelle Kompetenzen haben dabei mehrfache Bez{\"u}ge zu den dynamic capabilities: sie k{\"o}nnen Teil der dynamic capabilities sein, wenn sich Mitarbeiter durch hohe Lernf{\"a}higkeit auszeichnen (Metakompetenzen). Sie k{\"o}nnen aber auch Bezugspunkt sein, und zwar, wenn durch verschiedene Personalmaßnahmen die aggregierte Kompetenzausstattung ver{\"a}ndert wird. Zudem k{\"o}nnen die individuellen Kompetenzen Teil der dynamic capability des organisationalen Lernens sein, {\"u}ber das individuelle F{\"a}higkeiten mitarbeiter- und abteilungs{\"u}bergreifend miteinander vernetzt werden. Aus diesen Zusammenh{\"a}ngen ergeben sich konkrete Handlungsempfehlungen. Unternehmen, die die Chancen der digitalen Transformation nutzen wollen, bietet sich mit diesen Hinweisen die M{\"o}glichkeit, ihre dynamic capabilities zu erh{\"o}hen und damit auch im digitalen Zeitalter zukunftsf{\"a}hig zu sein.}, language = {de} } @book{Nufer2018, author = {Nufer, Gerd}, title = {Ambush Marketing im Sport : Grundlagen, Best Practice, Evaluation. - (Sportmanagement ; 03)}, publisher = {Erich Schmidt Verlag}, address = {Berlin}, isbn = {978-3-503-18123-0}, pages = {197}, year = {2018}, abstract = {Vor dem Hintergrund enormer Kosten im Sportsponsoring setzen Unternehmen verst{\"a}rkt auf Ambush Marketing. Dabei wird in der Unternehmenskommunikation die mediale Aufmerksamkeit von Sport-Events genutzt, ohne jedoch Vermarktungsrechte hierf{\"u}r erworben zu haben. Der Grat zwischen innovativer Kommunikationspolitik und der Verletzung von Sponsorenrechten ist dabei {\"a}ußerst schmal. Gerd Nufer stellt in diesem Buch sowohl die Sicht der Veranstalter und offiziellen Sponsoren von Sport-Events als auch die Perspektive der Ambusher vor.}, language = {de} } @article{Nebel2018, author = {Nebel, Kai}, title = {Kreislaufwirtschaft und technische Textilien}, series = {Technische Textilien = Textile technology}, volume = {61}, journal = {Technische Textilien = Textile technology}, number = {4}, publisher = {IBP, Internat. Business Press Publ}, address = {Frankfurt, M.}, issn = {0323-3243}, pages = {137 -- 137}, year = {2018}, abstract = {Der Markt f{\"u}r technische Textilien ... wird auch in Zukunft stetig wachsen. Vor dem Hintergrund steigender Rohstoffpreise, zunehmender Rohstoffknappheit, aber auch durch wachsendes Umweltbewusstsein und neue technische Regelungen, dr{\"a}ngen auch bei technischen Textilien Themen wie Ressourceneffizienz, Kreislaufwirtschaft und Recycling immer weiter in den Vordergrund. Was im Bekleidungsbereich bereits Usus ist, wird sich fr{\"u}her oder sp{\"a}ter auch in den Bereich der technischen Texilien {\"u}bertragen. Zudem ist eine signifikante Erh{\"o}hung der Recyclingquote erk{\"a}rtes Ziel der Bundesregierung.}, language = {de} } @inproceedings{Zimmermann2015, author = {Zimmermann, Alexander}, title = {Mit virtual reality zum E-Learning : eine prototypische Anwendung}, series = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. - (Informatics inside ; 15)}, booktitle = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. - (Informatics inside ; 15)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-049395-9}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18696}, pages = {58 -- 67}, year = {2015}, abstract = {Mit dem Kunstbegriff "Virtuelle Realit{\"a}t" beschreibt man die Darstellung von k{\"u}nstlichen Welten und die Interaktion mit den selbigen. Meist verbindet man damit teure Spiel- und Filmproduktionen. Doch durch derzeitige Entwicklungen k{\"o}nnen auch kleine Entwicklerstudios und Endanwender auf Bewegungserkennungssysteme zur{\"u}ckgreifen. In dieser Ausarbeitung werden zwei Prototypen vorgestellt, die auf eben diese Systeme zur{\"u}ckgreifen. In den Prototypen soll eine Interaktion mit der Umwelt und ein "Mittendringef{\"u}hl" im Rahmen von Serious Games erm{\"o}glicht werden.}, language = {de} } @inproceedings{Wahn2015, author = {Wahn, Yannik}, title = {Two Stream Hypothesis: Adaptationseffekte bei sozialen Interaktionen mit Avataren in Virtual Reality}, series = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. -(Informatics inside ; 15)}, booktitle = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. -(Informatics inside ; 15)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-049395-9}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18689}, pages = {50 -- 56}, year = {2015}, abstract = {In diesem Paper wird ein Experiment zur Two-Streams-Hypothese vorgestellt. Dabei werden zun{\"a}chst die psychologischen und technischen Grundlagen erarbeitet, welche f{\"u}r das Experiment ben{\"o}tigt werden. Anschließend wird die Forschungsfrage definiert und der Versuchsaufbau er{\"o}rtert. Im Experiment soll getestet werden, ob es unterschiedliche Adaptationseffekte bei der Erkennung und dem Ausf{\"u}hren von nicht-eindeutigen sozialen Handlungen gibt. Es wird ein Versuchsaufbau entwickelt, bei welchem Probanden entweder aktiv durch komplement{\"a}re Handlungen auf die Handlungen von virtuellen Avataren reagieren sollen oder passiv durch das Dr{\"u}cken von Buttons. Abschließend werden die Ergebnisse ausgewertet und ein Fazit gezogen.}, language = {de} } @inproceedings{Merk2015, author = {Merk, Matthias}, title = {Entwicklung eines ablenkungsfreien Anzeigekonzeptes f{\"u}r informierende Fahrerassistenzsysteme}, series = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. - (Informatics inside ; 15)}, booktitle = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. - (Informatics inside ; 15)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-049395-9}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18672}, pages = {28 -- 40}, year = {2015}, abstract = {Ziel der wissenschaftlichen Vertiefung ist es, ein Konzept einer Benutzeroberfl{\"a}che f{\"u}r ein Fahrassistenzsystem zu entwickeln und zu evaluieren. Das Fahrassistensystem soll dem Fahrer dabei helfen, sicher und energieeffizient zu fahren. Aufgabe ist es, ein Darstellungskonzept zu erstellen und zu evaluieren. Dabei sind die besonderen Anforderungen an Sekund{\"a}rinteraktionen im Fahrzeug zu ber{\"u}cksichtigen. Ziel der konzeptionellen Phase ist es, eine m{\"o}glichst ablenkungsfreihe Darstellung zu entwickeln. Dazu werden Normen, Guidelines und Standards der In-Car Interaction zusammenfassend beschrieben und angewendet. Ergebnis ist ein modular umsetzbares Darstellungskonzept, dessen Ablenkungsfreiheit durch einen Lane- Change-Test evaluiert wird.}, language = {de} } @inproceedings{Rauhoeft2015, author = {Rauh{\"o}ft, Greg}, title = {Unermessliche Weiten in virtuellen Umgebungen}, series = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. - (informatics inside ; 15)}, booktitle = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. - (informatics inside ; 15)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-049395-9}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18667}, pages = {42 -- 49}, year = {2015}, abstract = {Die Wahrnehmung unermesslicher Weite kann Ehrfurcht beim Menschen ausl{\"o}sen. Dies kann positive Reaktionen im Menschen zur Folge haben. W{\"a}hrend Ehrfurcht theoretisch und praktisch bereits gut erforscht ist, gibt es nur sehr wenig Forschung zum Thema der unermesslichen Weite. Dieses Wissen w{\"a}re n{\"u}tzlich, um gezielt Ehrfurcht beim Menschen auszul{\"o}sen. Aus diesem Grunde wurde eine Studie durchgef{\"u}hrt, mit der festgestellt werden soll, in wie weit sich ein Gef{\"u}hl unermesslicher Weite in virtueller Realit{\"a}t unter Verwendung eines Head-Mounted Displays erzeugen l{\"a}sst und ob dadurch Ehrfurcht entsteht.}, language = {de} } @inproceedings{Mahler2015, author = {Mahler, Jens}, title = {Der Einfluss von scroll-activated animations auf usability und user experience}, series = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. - (Informatics inside ; 15)}, booktitle = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. - (Informatics inside ; 15)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-049395-9}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18652}, pages = {16 -- 26}, year = {2015}, abstract = {Scroll-activated animations er{\"o}ffnen Webentwicklern neue M{\"o}glichkeiten der Interaktion und Pr{\"a}sentation von Inhalten. Durch die Animation von Bildern, Texten und weiteren Elementen einer Website soll der Nutzer durch die neue Darstellungsart positiv {\"u}berrascht werden. Ziel ist es, dem Nutzer die Inhalte interessanter und m{\"o}glichst gezielt zu vermitteln. Es stellt sich jedoch die Frage, ob die dadurch gesteigerte User Experience zulasten der Usability erfolgt. Unter Umst{\"a}nden f{\"u}hren die Animationen beim Nutzer zwar zu einem Aha-Effekt, setzen jedoch die Benutzerfreundlichkeit herab. Aus diesem Grund geht die Arbeit auf den Aspekt der Usability und User Experience dieser Animationen ein und untersucht den tats{\"a}chlichen Mehrwert des Einsatzes von Scroll-Animationen mithilfe von Webanalysetools. Durch den Vergleich mit einer inhaltlich identischen Seite sollen die oben genannten Effekte untersucht werden. Zus{\"a}tzlich sollen die Ergebnisse nach Ger{\"a}tetypen aufgeschl{\"u}sselt werden, um m{\"o}gliche Unterschiede aufzudecken.}, language = {de} } @inproceedings{Henssler2015, author = {Henssler, Christian}, title = {Techniken zur Deformation von virtuellen Menschmodellen}, series = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. - (Informatics inside ; 15)}, booktitle = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. - (Informatics inside ; 15)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-049395-9}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18649}, pages = {8 -- 15}, year = {2015}, abstract = {Gescannte Menschmodelle werden zunehmend f{\"u}r Experimente im VR-Bereich verwendet. Doch realistische Bewegungsabl{\"a}ufe bereitzustellen, ist eine zeitaufwendige Arbeit. Ziel der Ausarbeitung ist es, einen Workflow zu finden, der es erm{\"o}glicht, eine große Anzahl solcher Modelle innerhalb k{\"u}rzester Zeit zu verarbeiten. Daf{\"u}r betrachtet die Arbeit unterschiedliche Methoden zum Automatisieren von Skinning und Rigging, um Modelle in virtuellen Umgebungen auf Basis von Motion Tracking einsetzen zu k{\"o}nnen. Die Qualit{\"a}t der verarbeiteten Modelle wird anhand von Scans in unterschiedlichen Posen gepr{\"u}ft.}, language = {de} } @book{OPUS4-1863, title = {Informatics inside: interaction design : Informatik-Konferenz an der Hochschule Reutlingen, 06. Mai 2015. - (Informatics inside ; 15)}, editor = {Kloos, Uwe and Mart{\´i}nez Madrid, Natividad and Tullius, Gabriela}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-049395-9}, pages = {79}, year = {2015}, abstract = {Interdisziplinarit{\"a}t ist zwar in aller Munde, ist allerdings h{\"a}ufig schwer praktizierbar. Jedoch erfolgt interessante Forschung h{\"a}ufig an den Schnittstellen einzelner Gebiete. Als Besucher der Konferenz erwarten Sie Beitr{\"a}ge aus unterschiedlichsten Bereichen, wie zum Beispiel e-Learning, automatische Emotionserkennung und -animation, der Mensch-Roboter Interaktion, Fahrerassistenzsysteme, Mechanismen der Wahrnehmung in Virtuellen Welten und der Verarbeitung von digitalen Menschmodellen. Die vorgestellten Arbeiten sind entweder an der Informatik-Fakult{\"a}t selbst oder extern in Zusammenarbeit mit einem forschenden Unternehmen bzw. mit einem Forschungsinstitut entstanden. Dar{\"u}ber hinaus werden Arbeiten von anderen Fakult{\"a}ten pr{\"a}sentiert.}, language = {de} } @article{KneipBrueggemann2018, author = {Kneip, Petra and Br{\"u}ggemann, Julia}, title = {Wenn Kopf, Bauch und Hand zusammenpassen}, series = {Controlling \& Management Review : Zeitschrift f{\"u}r Controlling \& Management}, volume = {62}, journal = {Controlling \& Management Review : Zeitschrift f{\"u}r Controlling \& Management}, number = {2}, publisher = {Springer}, address = {Berlin ; Heidelberg}, issn = {2195-8262}, doi = {/10.1007/s12176-017-0141-0}, pages = {58 -- 63}, year = {2018}, abstract = {Nicht jeder Mitarbeiter im Controlling ist begeistert, dass sich Aufgabeninhalte und Arbeitsabl{\"a}ufe derzeit massiv ver{\"a}ndern. Motivationsdefizite k{\"o}nnen die Folge sein. Durch eine Fokussierung auf die intrinsische Motivation von Mitarbeitern lassen sich diese Defizite reduzieren.}, language = {de} } @article{SchmaehWaltmann2018, author = {Schm{\"a}h, Marco and Waltmann, Verena}, title = {Wie man automatischen Content sinnvoll nutzen kann}, series = {Marke 41 : das neue Journal f{\"u}r Marketing}, journal = {Marke 41 : das neue Journal f{\"u}r Marketing}, number = {3}, publisher = {MIM, Marken-Institut M{\"u}nchen}, address = {M{\"u}nchen}, issn = {1866-5438}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18907}, pages = {8 -- 16}, year = {2018}, abstract = {L{\"a}ngst ist das World Wide Web mit unz{\"a}hligen Online-Shops aus dem In- und Ausland {\"u}berflutet. Es wird immer wichtiger f{\"u}r Online-Shop-Betreiber, aus dieser Masse herauszustechen. Die Produktbeschreibung ist dabei oft Indikator f{\"u}r die Qualit{\"a}t eines Shops. Die Entwicklung von Software zur automatischen Content-Generierung ist hierbei eine kostensparende M{\"o}glichkeit, Texte zu erstellen, die sich in Sekunden massenhaft variieren lassen. Kreiert die robotergesteuerte Texterstellung jedoch auch eine Zukunft, die ganze Arbeitszweige obsolet werden l{\"a}sst?}, language = {de} } @article{RingelTremmlLoebbe2018, author = {Ringel, Marc and Tremml, Timo and L{\"o}bbe, Sabine}, title = {Les impacts de la num{\´e}risation sur les services {\´e}nerg{\´e}tiques en Europe : num{\´e}risation et analyse de donn{\´e}es dans le domaine de l'{\´e}nergie}, series = {Passages}, journal = {Passages}, number = {195}, address = {Paris}, issn = {0987-8505}, pages = {38 -- 40}, year = {2018}, abstract = {Avec le d{\´e}ploiement des compteurs intelligents en Europe, les fournisseurs d'{\´e}nergie europ{\´e}ens auront acc{\`e}s aux donn{\´e}es clients de mani{\`e}re in{\´e}dite.De r{\´e}centes {\´e}tudes sugg{\`e}rent que le volume de donn{\´e}es r{\´e}cup{\´e}r{\´e}es se situera entre 10 et 800 t{\´e}raoctets par fournisseur par an ... L'objectif principal est d'am{\´e}liorer la satisfaction du client et d'{\´e}viter un changement de fournisseur.}, language = {fr} } @article{AdamStraehleFreise2018, author = {Adam, Marcus and Str{\"a}hle, Jochen and Freise, Matthias}, title = {Dynamic capabilities of early-stage firms: exploring the business of renting fashion}, series = {Journal of small business strategy}, volume = {28}, journal = {Journal of small business strategy}, number = {2}, publisher = {Middle Tennessee State University}, address = {Murfreesboro, TN}, issn = {1081-8510}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-19004}, pages = {49 -- 67}, year = {2018}, abstract = {In recent years the share economy has gained widespread success across different industries. Since small firms and new ventures obtain fewer resources, an increased focus on service allows them to differentiate and compete with cost pressure in traditionally manufacturing based industries. There still is a lack of understanding how these firms manage to successfully shift towards service-oriented business models. This paper adopts a dynamic capabilities approach to examine the particular microfoundations that underlie sensing, seizing and reconfiguring dynamic capabilities of early-stage service firms within a traditional retail market. The context of this study is the fashion industry. It is an ideal setting since it is characterized by severe competition, short life cycles, strong cost pressure and high volatility. There are few but increasing examples of entrepreneurial initiatives that try to compete by providing offers to resell, rent or swap clothes. Qualitative data of five early stage fashion ventures is analyzed. Findings reveal that the ability to develop and maintain long-term relationships is essential. It has also been found crucial to acquire knowledge from external network partners, delegate tasks and share information. Furthermore, skills for interacting with customers and adopting consumer feedback are critical. This study provides empirical evidence of dynamic capabilities of early-stage firms and contributes to knowledge on the factors that facilitate servitization in traditionally manufacturing based industries. For practitioners, the presented microfoundations provide a framework of critical tasks that allow them to develop and maintain a service oriented business model.}, language = {en} } @article{KoeksalStraehleMueller2018, author = {K{\"o}ksal, Deniz and Str{\"a}hle, Jochen and M{\"u}ller, Martin}, title = {Social sustainability in apparel supply chains — the role of the sourcing intermediary in a developing country}, series = {Sustainability}, volume = {10}, journal = {Sustainability}, number = {4, Aufsatz 1039}, publisher = {MDPI}, address = {Basel}, issn = {2071-1050}, doi = {10.3390/su10041039}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18990}, pages = {1 -- 35}, year = {2018}, abstract = {After considering significant literature on sustainable supply chain management (SSCM), it is evident that research has neglected the social dimension and still lacks in highlighting the role of sourcing intermediaries in supply chains. The apparel supply chain has increased enormously in length and complexity, driving apparel retailers to employ sourcing intermediaries who manage their sourcing activities with suppliers from developing countries overseas. Thus, the purpose of this study is to enrich existing findings on SSCM by exploring the management of social sustainability when sourcing intermediaries are in between the focal company and the respective developing country factories. More specifically, this study aims to understand the role of apparel sourcing intermediaries for the implementation of social management strategies based on the perception of multiple supply chain actors. Qualitative data was collected through semi-structured interviews conducted in Vietnam and Europe. Ultimately ten propositions are presented, all explicitly concentrating on the apparel intermediary's role as a significant enabler for social sustainability in apparel supply chains. The roles are social sustainability, supplier developer and coordinator, gatekeeper and safeguard, cultural broker, and social risk manager. The social sustainability roles assumed by the apparel sourcing intermediary offer great opportunities to both apparel retailers and developing country factories.}, language = {en} } @inproceedings{Antakli2014, author = {Antakli, Andr{\´e}}, title = {Umgebungswahrnehmung von agentenbasierten simulierten Menschmodellen in virtuellen Welten im Kontext C3D}, series = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014, Fakult{\"a}t Informatik. - (Informatics inside ; 14)}, booktitle = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014, Fakult{\"a}t Informatik. - (Informatics inside ; 14)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-045427-1}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18607}, pages = {100 -- 110}, year = {2014}, abstract = {Das Ziel dieser Arbeit war die Umsetzung eines Wahrnehmungsensors f{\"u}r Softwareagenten, die {\"u}ber ein virtuelles Menschmodell in einer dreidimensionalen Umgebung agieren. Hierbei sollen die Agenten {\"u}ber den Sensor in der Lage sein, semantische Informationen zu geometrischen Objekten in der Umgebung zu erhalten. Hierf{\"u}r wurden zwei Verfahren umgesetzt, die das menschliche Sehen simulieren, indem Objekte erkannt werden, wenn diese innerhalb eines Sichtfelds liegen. Ein Problem, das dabei gel{\"o}st werden muss, ist die Identifizierung m{\"o}glicher Verdeckungen der Objekte. Ein Ansatz, dieses Problem zu l{\"o}sen, ist der Ray-Tracing Ansatz, welcher f{\"u}r das erste Verfahren umgesetzt wurde. Das zweite Verfahren verwendet den Occlusion-Culling Ansatz. Auswertungen beider Verfahren haben gezeigt, dass der Ray-Tracing Ansatz eine schnellere Laufzeit aufweist, der Occlusion-Culling Ansatz jedoch mehr unverdeckte Objekte im Sichtfeld erkennt.}, language = {de} } @inproceedings{Kartheininger2014, author = {Kartheininger, Johannes}, title = {Vergleich der Single Sign On Verfahren SAML und OpenID Connect}, series = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014, Fakult{\"a}t Informatik. - (Informatics inside ; 14)}, booktitle = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014, Fakult{\"a}t Informatik. - (Informatics inside ; 14)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-045427-1}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18595}, pages = {92 -- 98}, year = {2014}, abstract = {In dieser Arbeit werden die beiden Single Sing On-Protokolle SAML und OpenID Connect miteinander verglichen. Vorab wird die Aufgabe eines Single Sign On-Systemes erl{\"a}utert und allgemeine Vorteile sowie Nachteile aufgez{\"a}hlt.}, language = {de} } @inproceedings{Hoffmann2014, author = {Hoffmann, Viktoria}, title = {Optimierung der Usability von digitalen Fahrtenb{\"u}chern durch automatisches Erfassen von fahrzeugspezifischen Daten}, series = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014, Fakult{\"a}t Informatik. - (Informatics inside ; 14)}, booktitle = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014, Fakult{\"a}t Informatik. - (Informatics inside ; 14)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-045427-1}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18583}, pages = {80 -- 91}, year = {2014}, abstract = {Mit dem starken Wachstum des CarSharing- Angebots und der großen Menge an Flottenfahrzeugen in Unternehmen nimmt auch die Anzahl der Fahrtenbuch-Apps zu. Bei den meisten mobilen Fahrtenbuch- Anwendungen muss der Benutzer den Kilometerstand manuell eintragen. Dies wirkt sich negativ auf die Usability und die User Experience aus. Hinzu kommt, dass jede Minute kostbar ist, die der Fahrer im ausgeliehenen Auto verbringt. Aus diesen Gr{\"u}nden wird hier eine L{\"o}sung vorgestellt, bei der der Kilometerstand aus einer Mercedes Benz A-Klasse {\"u}ber den OBD-Anschluss mit Hilfe des CAN Interfaces „ISI b2air" automatisch ausgelesen und per Bluetooth an die Fahrtenbuch-App der Berger Elektronik GmbH gesendet wird. Hierf{\"u}r wird mittels der Software „ISI b2app" die Kommunikation des Diagnosetesters mit dem Fahrzeug aufgezeichnet. Anschließend werden die CAN-Botschaften analysiert und in Bezug auf den Kilometerstand gefiltert. Die entsprechende Anfrage zum Erhalt des Kilometerstandes wird in den Programmcode des Berger Fahrtenbuches implementiert, so dass die App selbstst{\"a}ndig den Kilometerstand auslesen kann.}, language = {de} } @inproceedings{delaRosaAvitia2014, author = {de la Rosa Avitia, Olaya}, title = {Strategy to test mobile apps}, series = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014, Fakult{\"a}t Informatik. - (Informatics inside ; 14)}, booktitle = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014, Fakult{\"a}t Informatik. - (Informatics inside ; 14)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-045427-1}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18576}, pages = {70 -- 78}, year = {2014}, abstract = {Nowadays the development of a mobile app implies challenges and difficulties, which have to be faced by mobile app developers. Innovations lead to a rapidly evolving mobile app market, therefore apps should be developed faster and offered in short release cycles to the market. Testing is a decisive activity within the development process that helps to improve the quality of the app. This research paper describes a strategy to test mobile apps that overcomes the challenges that mobile apps confront and permits to test the app in a structural test environment.}, language = {en} } @article{delaRosaFademrechtBuelthoffetal.2018, author = {de la Rosa, Stephan and Fademrecht, Laura and B{\"u}lthoff, Heinrich and Giese, Martin and Curio, Crist{\´o}bal}, title = {Two ways to facial expression recognition? Motor and visual information have different effects on facial expression recognition}, series = {Psychological science : a journal of the American Psychological Society}, volume = {29}, journal = {Psychological science : a journal of the American Psychological Society}, number = {8}, publisher = {Sage}, address = {London}, issn = {0956-7976}, doi = {10.1177/0956797618765477}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18554}, pages = {1257 -- 1269}, year = {2018}, abstract = {Motor-based theories of facial expression recognition propose that the visual perception of facial expression is aided by sensorimotor processes that are also used for the production of the same expression. Accordingly, sensorimotor and visual processes should provide congruent emotional information about a facial expression. Here, we report evidence that challenges this view. Specifically, the repeated execution of facial expressions has the opposite effect on the recognition of a subsequent facial expression than the repeated viewing of facial expressions. Moreover, the findings of the motor condition, but not of the visual condition, were correlated with a nonsensory condition in which participants imagined an emotional situation. These results can be well accounted for by the idea that facial expression recognition is not always mediated by motor processes but can also be recognized on visual information alone.}, language = {en} } @inproceedings{TanSathyamurtyRolappetal.2018, author = {Tan, Jun and Sathyamurty, Muralikrishna and Rolapp, Alexander and Gamez, Jonathan and Hennig, Eckhard and Sommer, Ralf}, title = {A fully passive RFID temperature sensor SoC with an accuracy of ±0.4°C (3σ) from 0°C to 125°C}, series = {2018 IEEE International Conference on RFID : 10-12 April 2018 : IEEE RFID 2018, 12th Annual International Conference on RFID (Orange County Convention Center, Orlando, FL, April 10-12, 2018)}, booktitle = {2018 IEEE International Conference on RFID : 10-12 April 2018 : IEEE RFID 2018, 12th Annual International Conference on RFID (Orange County Convention Center, Orlando, FL, April 10-12, 2018)}, publisher = {IEEE}, address = {Piscataway, NJ}, doi = {10.1109/RFID.2018.8376198}, pages = {8}, year = {2018}, abstract = {This paper presents a fully passive 13.56 MHz RFID temperature sensor system-on-chip. Its power management unit (PMU) operates over a large temperature range using a zero temperature coefficient (TC) bias source. On-chip temperature sensing is accomplished with low voltage, low power CMOS circuitry and time-domain signal processing. Two operating modes have been defined to study supply noise sensitivity: command mode and listening mode, which represent sensor operation during RFID command transfer and listening, respectively. Besides a standard readout command, a customized serial readout command is utilized to distinguish the data from both modes. In command mode, the sensor suffers from interference from the RFID command packet and outputs interference as well, while the sensor outputs no interference in listening mode. Measurements show that sensor resolution in listening mode is improved by a factor of approximately 16 compared to command mode. The chip was fabricated in a standard 0.35 µm CMOS technology and chip-on-board mounted to a tuned RFID transponder coil on an aluminium core FRA4 PCB substrate. Real-time wireless temperature sensing has been demonstrated with a commercial HF RFID reader. With a two-point calibration, the SoC achiesves a 3σ sensing accuracy of ±0.4°C from 0° C to 125° C.}, language = {en} } @inproceedings{FrankKatsoulisToradmaletal.2018, author = {Frank, Heinz and Katsoulis, Sokratis and Toradmal, Ajit and Thomas, Bernd}, title = {Standardized communication systems for distributed energy resources in micro grids}, series = {2018 IEEE International Energy Conference (ENERYGCON), 3-7 June 2018, Limassol}, booktitle = {2018 IEEE International Energy Conference (ENERYGCON), 3-7 June 2018, Limassol}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5386-3669-5}, doi = {10.1109/ENERGYCON.2018.8398798}, pages = {6}, year = {2018}, abstract = {Micro grids often consist of energy generators, storages and consumers with controllers which are not prepared for their integration into communication networks for energy systems. In this paper it will be presented, how standards from the field of energy automation can be applied in such controllers. The data for communication interfaces can be structured according to the IEC 61850- or the VHPREADY standard. It is investigated which requirements must be supported to implement such data models within the controllers. For the transmission of the data we propose the OPC UA protocol, which supports extensive security measures and which is today available for nearly all modern types of controllers and computers.}, language = {en} } @article{JaschWeberRaetsch2018, author = {Jasch, Manuel and Weber, Thomas and R{\"a}tsch, Matthias}, title = {Fast and robust RGB-D scene labeling for autonomous driving}, series = {Journal of computers}, volume = {13}, journal = {Journal of computers}, number = {4}, publisher = {International Academy Publishing}, address = {San Bernardino, Ca.}, issn = {1796-203X}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17016}, pages = {393 -- 400}, year = {2018}, abstract = {For autonomously driving cars and intelligent vehicles it is crucial to understand the scene context including objects in the surrounding. A fundamental technique accomplishing this is scene labeling. That is, assigning a semantic class to each pixel in a scene image. This task is commonly tackled quite well by fully convolutional neural networks (FCN). Crucial factors are a small model size and a low execution time. This work presents the first method that exploits depth cues together with confidence estimates in a CNN. To this end, novel experimentally grounded network architecture is proposed to perform robust scene labeling that does not require costly preprocessing like CRFs or LSTMs as commonly used in related work. The effectiveness of this approach is demonstrated in an extensive evaluation on a challenging real-world dataset. The new architecture is highly optimized for high accuracy and low execution time.}, language = {en} } @inproceedings{StollmannBukenberger2018, author = {Stollmann, Katrina and Bukenberger, Karin}, title = {AG 7 "Außersprachliches" und der GER : Interkulturalit{\"a}t, Mediation, Strategien}, series = {Der Gemeinsame Europ{\"a}ische Referenzrahmen f{\"u}r Sprachen und seine Adaption im Hochschulkontext : 6. Bremer Symposion zum Sprachenlernen und -lehren}, booktitle = {Der Gemeinsame Europ{\"a}ische Referenzrahmen f{\"u}r Sprachen und seine Adaption im Hochschulkontext : 6. Bremer Symposion zum Sprachenlernen und -lehren}, editor = {Brandt, Anik{\´o}}, publisher = {AKS-Verlag}, address = {Bochum}, pages = {329 -- 332}, year = {2018}, abstract = {Im Fokus der AG stand in erster Linie die Auseinandersetzung mit Konzepten und Praxismodellen aus den Lehrangeboten der Sprachzentren ... Es ging ... um Themen und Aspekte, die noch nicht in den GER aufgenommen und beschrieben sind, um die Grenzen und L{\"u}cken des GER; die das Thema des 6. Bremer Symposiums waren : interkulturelle, soziale, strategische und mediatorische Kompetenzen.}, language = {de} } @article{VeitGruenewald2018, author = {Veit, Baldur and Gr{\"u}newald, Hazel}, title = {Managing international internships responding to the growing demand for international work experience}, series = {Internationalisation of higher education}, journal = {Internationalisation of higher education}, number = {2}, publisher = {DUZ Medienhaus}, address = {Berlin}, issn = {2199-5125}, pages = {51 -- 72}, year = {2018}, abstract = {This paper looks at the case of Reutlingen University (Hochschule Reutlingen), a university with a reputation for international student mobility. It examines how the university strives to fulfil its mandate to prepare 'industry-ready' graduates for the global industry by providing an international practice-oriented education. The key focus is on its efforts to establish credit-bearing internship programmes for international students, an area where the institution has ramped up its activities in recent years. Internships for international students is understood to encompass both domestic internships for international students (exchange and degree-seeking students) as well as internships abroad for home-grown degree-seeking students. The paper presents models and approaches that seek to ensure the quality of the international internship experience. It discusses challenges that the university has encountered on the way and makes suggestions about how to create internship opportunities against the backdrop of competing demands and expectations.}, language = {en} } @article{RossMockerBeath2018, author = {Ross, Jeanne and Mocker, Martin and Beath, Cynthia}, title = {Five building blocks of digital transformation}, series = {MIT CISR research briefing}, volume = {18}, journal = {MIT CISR research briefing}, number = {6}, publisher = {MIT Center for Information Systems Research}, address = {Cambridge, MA}, pages = {1 -- 4}, year = {2018}, abstract = {We have identified five digital building blocks that develop the new capabilities companies will need to succeed in the future. These building blocks establish a foundation on which to rapidly develop and scale digital offerings that customers value.}, language = {en} } @article{MetzgerKonradBlendingeretal.2018, author = {Metzger, Michael and Konrad, Alexander and Blendinger, Felix and Modler, Andreas and Meixner, Alfred and Bucher, Volker and Brecht, Marc}, title = {Low-cost GRIN-lens-based nephelometric turbidity sensing in the range of 0.1-1000 NTU}, series = {Sensors}, volume = {18}, journal = {Sensors}, number = {4, Aufsatz 1115}, publisher = {MDPI}, address = {Basel}, issn = {1424-8220}, doi = {10.3390/s18041115}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18382}, pages = {1 -- 9}, year = {2018}, abstract = {Turbidity sensing is very common in the control of drinking water. Furthermore, turbidity measurements are applied in the chemical (e.g., process monitoring), pharmaceutical (e.g., drug discovery), and food industries (e.g., the filtration of wine and beer). The most common measurement technique is nephelometric turbidimetry. A nephelometer is a device for measuring the amount of scattered light of suspended particles in a liquid by using a light source and a light detector orientated in 90°to each other. Commercially available nephelometers cost usually—depending on the measurable range, reliability, and precision —thousands of euros. In contrast, our new developed GRIN-lens-based nephelometer, called GRINephy, combines low costs with excellent reproducibility and precision, even at very low turbidity levels, which is achieved by its ability to rotate the sample. Thereby, many cuvette positions can be measured, which results in a more precise average value for the turbidity calculated by an algorithm, which also eliminates errors caused by scratches and contaminations on the cuvettes. With our compact and cheap Arduino-based sensor, we are able to measure in the range of 0.1-1000 NTU and confirm the ISO 7027-1:2016 for low turbidity values.}, language = {en} } @inproceedings{Weister2014, author = {Weister, Arkadius}, title = {Language Oriented Programming: modulare dom{\"a}nenspezifische Sprachen}, series = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014.- (Informatics inside ; 14)}, booktitle = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014.- (Informatics inside ; 14)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-045427-1}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18548}, pages = {54 -- 69}, year = {2014}, abstract = {Beim Language Oriented Programming (LOP) erstellt der Entwickler eine Programmiersprache, um ein Problem oder eine Aufgabe in einer bestimmten Dom{\"a}ne zu l{\"o}sen. Dabei wird die Sprache so entwickelt, dass sie das konzeptuelle Modell des Entwicklers ohne Umdenken umsetzen kann. Diese Sprachen nennt man dom{\"a}nenspezifische Sprachen (DSL). Zur Entwicklung dieser Sprachen werden sogenannte Language Workbenches (LWB) verwendet. Diese Arbeit befasst sich mit der Entwicklung von DSLs als ein Mittel zur Umsetzung von LOP. Durch die Nutzung der LWBs kann man DSLs mit relativ kleinem Aufwand erstellen und einsetzen. Im Fokus dieser Arbeit steht die Entwicklung von "Modularen DSLs". Hierbei werden Kriterien und Voraussetzungen f{\"u}r die Modularisierung betrachtet. Zum Abschluss werden drei Konzepte bestehender Systeme anhand dieser Kriterien betrachtet und bewertet.}, language = {de} } @inproceedings{Mangold2014, author = {Mangold, Ren{\´e}}, title = {Selektion von Szenarien zur Optimierung von Simulationen im pr{\"a}ventiven Krisenmanagement}, series = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014. - (Informatics inside ; 14)}, booktitle = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014. - (Informatics inside ; 14)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-045427-1}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18530}, pages = {46 -- 52}, year = {2014}, abstract = {Im pr{\"a}ventiven Krisenmanagement geht es um die fr{\"u}hzeitige Erkennung von m{\"o}glichen, unvorhersehbaren Ereignissen. Hierzu z{\"a}hlen beispielhaft Busunf{\"a}lle, einst{\"u}rzende Geb{\"a}ude und {\"a}hnliche Großschadensereignisse. Krisen treten meist unerwartet auf und neigen oftmals aufgrund der knapp bemessenen Handlungszeit zu Fehlentscheidungen. Um dies zu verhindern, dient das pr{\"a}ventive Krisenmanagement dazu, s{\"a}mtliche auftretende Ereignisse mittels einer Simulation zuvor durchzuspielen, um im Falle einer reellen Krise die notwendigen Schritte bestm{\"o}glich einzuleiten. Um Simulationen f{\"u}r das Krisenmanagement zu pr{\"a}zisieren und die Ergebnisse effektiv und vereinfacht zu veranschaulichen, ist es notwendig, eine Vorauswahl an vorhandenen Szenarien f{\"u}r Vergleiche heraussuchen zu k{\"o}nnen. Diese Arbeit entstand im Rahmen des FP-7 EU Projekts CRISMA (Crisis Management) [1] und dient zur Evaluation eines Konzepts zur Vorauswahl geeigneter Szenarien, welche in fr{\"u}heren Simulationen entstanden.}, language = {de} } @inproceedings{Mauser2014, author = {Mauser, Stanislas}, title = {Analysis of finger- and palm-based interaction paradigms for touch-free gesture-based control of medical devices with the Leap Motion Controller}, series = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014. - (Informatics inside ; 14)}, booktitle = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014. - (Informatics inside ; 14)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-045427-1}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18506}, pages = {34 -- 44}, year = {2014}, abstract = {There are several intra-operative use cases which require the surgeon to interact with medical devices. I used the Leap Motion Controller as input device for three use-cases: 2D-interaction (e.g. advancing EPR data), selection of a value (e.g. room illumination brightness) and an application point and click scenario. I evaluated the Palm Mouse as the most suitable gesture solution to coordinate the mouse and advise to use the implementation using all fingers to perform a click. This small case study introduces the implementations and methods that result those recommendations.}, language = {en} } @inproceedings{Gutekunst2014, author = {Gutekunst, Matthias}, title = {Augmented Virtuality zur Steigerung der Immersion in virtuellen Umgebungen}, series = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014. - (Informatics inside ; 14)}, booktitle = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014. - (Informatics inside ; 14)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-045427-1}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18437}, pages = {26 -- 32}, year = {2014}, abstract = {In mehreren Untersuchungen hat sich gezeigt, dass sich die Wahrnehmung des eigenen K{\"o}rpers in einer virtuellen Umgebung positiv auf die Wahrnehmung der gesamten Umgebung auswirkt. F{\"u}r diese Untersuchungen wurden der K{\"o}rper einer Person, oder Teile davon, als animierter Avatar aus der Ego-Perspektive dargestellt. Im Kontext der Informatikkonferenz Informatics Inside 2014 an der Hochschule Reutlingen soll in dieser Arbeit eine andere M{\"o}glichkeit der Darstellung untersucht werden. In einer prototypischen Augmented Virtuality Anwendung soll die virtuelle Umgebung um reale Inhalte erweitert werden. Es soll einer Person erm{\"o}glicht werden, Teile ihres eigenen K{\"o}rpers nicht als Avatar, sondern auf Basis einer Kameraaufnahme als realistische Repr{\"a}sentation wahrzunehmen. Die Arbeit beschreibt hierbei die gesetzten Ziele, sowie Aufbau und Funktionsweise der prototypischen Anwendung und deren derzeitigen Stand.}, language = {de} } @inproceedings{Bauer2014, author = {Bauer, Thomas}, title = {Anforderungsanalyse zur computergest{\"u}tzten Erkennung der Deutschen Geb{\"a}rdensprache}, series = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014. - (Informatics inside ; 14)}, booktitle = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014. - (Informatics inside ; 14)}, editor = {Kloos, Uwe}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-045427-1}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18429}, pages = {8 -- 24}, year = {2014}, abstract = {Im Rahmen der wissenschaftlichen Vertiefung an der Hochschule Reutlingen befasst sich diese Arbeit mit der Untersuchung der Anforderungen und der Machbarkeit zur computergest{\"u}tzten Erkennung der Deutschen Geb{\"a}rdensprache (DGS) und des deutschen Fingeralphabets. Die Erkenntnisse aus dieser Arbeit dienen als Grundlage zur Entwicklung eines Systems zur {\"U}bersetzung von Geb{\"a}rden der DGS oder des Fingeralphabets in die deutsche Schriftsprache. Zun{\"a}chst werden grundlegende Informationen zu Geschichte, Aufbau und Grammatik der DGS und des Fingeralphabets aufgef{\"u}hrt. Die Erkennung der Geb{\"a}rden soll durch optische Bewegungssensoren erfolgen. Hierf{\"u}r werden unterschieliche Sensortypen betrachtet und verglichen. Im weiteren Verlauf erfolgt die Analyse der benutzerspezifischen und technischen Anforderungen. Erstere basieren auf der Befragung einer Fokusgruppe aus geh{\"o}rlosen und h{\"o}renden Menschen aus dem Bereich der Geh{\"o}rlosen-, Schwerh{\"o}rigen- und Sprachbehindertenp{\"a}dagogik. Abgeleitet aus den Informationen der Anforderungsanalyse ergibt sich, bis zu einem gewissen Grad, die Machbarkeit aus technischer und benutzerspezifischer Sicht. Abschließend erfolgen die Zusammenfassung der Anforderungen, welche an das zu entwickelnde System gestllt werden, sowie eine Handlungsempfehlung f{\"u}r die Entwicklung eines Prototyps.}, language = {de} } @article{BraunOhlhausenAltetal.2018, author = {Braun, Anja and Ohlhausen, Peter and Alt, Christian and Bahlinger, Daniel and Czilwik Chaves, Daniel and Egeler, Markus and Gramespacher, Stefan and Matzka, Janine and Steinbeck, Jan and Weber, Christian}, title = {Der Weg zur Industrie 4.0-Roadmap: spezielles Vorgehen f{\"u}r den Mittelstand}, series = {Zeitschrift f{\"u}r wirtschaftlichen Fabrikbetrieb : ZWF}, volume = {113}, journal = {Zeitschrift f{\"u}r wirtschaftlichen Fabrikbetrieb : ZWF}, number = {4}, publisher = {Hanser}, address = {M{\"u}nchen}, doi = {10.3139/104.111888}, pages = {254 -- 257}, year = {2018}, abstract = {Die vierte industrielle Revolution stellt neue Anforderungen an Unternehmen und insbesondere an KMU. Das verf{\"u}gbare Know-how bei der Implementierung von Industrie 4.0-Ans{\"a}tzen stellt f{\"u}r viele KMU eine Herausforderung dar. Derzeit existieren in der Literatur verschiedene Wege zur Erstellung einer auf das Unternehmen angepassten Industrie 4.0 Roadmap. Eine Ausrichtung auf die Belange von KMU fehlt jedoch g{\"a}nzlich. Mit dieser Arbeit werden verschiedene Ans{\"a}tze zur Erstellung einer Industrie 4.0-Roadmap zusammengefasst und anschließend untersucht, worauf KMU mit ihren spezifischen Eigenschaften besonders ihren Fokus legen sollten.}, language = {de} } @phdthesis{Huber2017, author = {Huber, Patrik}, title = {Real-time 3D morphable shape model fitting to monocular in-the-wild videos}, address = {Guildford}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18859}, pages = {109}, year = {2017}, abstract = {Reconstructing 3D face shape from a single 2D photograph as well as from video is an inherently ill-posed problem with many ambiguities. One way to solve some of the ambiguities is using a 3D face model to aid the task. 3D morphable face models (3DMMs) are amongst the state of the art methods for 3D face reconstruction, or so called 3D model fitting. However, current existing methods have severe limitations, and most of them have not been trialled on in-the-wild data. Current analysis-by- synthesis methods form complex non linear optimisation processes, and optimisers often get stuck in local optima. Further, most existing methods are slow, requiring in the order of minutes to process one photograph. This thesis presents an algorithm to reconstruct 3D face shape from a single image as well as from sets of images or video frames in real-time. We introduce a solution for linear fitting of a PCA shape identity model and expression blendshapes to 2D facial landmarks. To improve the accuracy of the shape, a fast face contour fitting algorithm is introduced. These different components of the algorithm are run in iteration, resulting in a fast, linear shape-to- landmarks fitting algorithm. The algorithm, specifically designed to fit to landmarks obtained from in-the-wild images, by tackling imaging conditions that occur in in-the-wild images like facial expressions and the mismatch of 2D-3D contour correspondences, achieves the shape reconstruction accuracy of much more complex, nonlinear state of the art methods, while being multiple orders of magnitudes faster. Second, we address the problem of fitting to sets of multiple images of the same person, as well as monocular video sequences. We extend the proposed shape-to-landmarks fitting to multiple frames by using the knowledge that all images are from the same identity. To recover facial texture, the approach uses texture from the original images, instead of employing the often-used PCA albedo model of a 3DMM. We employ an algorithm that merges texture from multiple frames in real-time based on a weighting of each triangle of the reconstructed shape mesh. Last, we make the proposed real-time 3D morphable face model fitting algorithm available as open-source software. In contrast to ubiquitous available 2D-based face models and code, there is a general lack of software for 3D morphable face model fitting, hindering a widespread adoption. The library thus constitutes a significant contribution to the community.}, language = {en} } @article{FalomirOrtegaRamirezMartinezMadridetal.2017, author = {Falomir, Zoe and Ortega Ram{\´i}rez, Juan Antonio and Mart{\´i}nez Madrid, Natividad and Guesguen, Hans}, title = {Thematic issue on human-centred ambient intelligence: cognitive approaches, reasoning and learning}, series = {Journal of ambient intelligence and smart environments}, volume = {9}, journal = {Journal of ambient intelligence and smart environments}, number = {5}, publisher = {IOS Press}, address = {Amsterdam}, issn = {1876-1364}, doi = {10.3233/AIS-170449}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-16153}, pages = {539 -- 542}, year = {2017}, abstract = {This editorial presents advances on human-centred Ambient Intelligence applications which take into account cognitive issues when modelling users (i.e. stress, attention disorders), and learn users' activities/preferences and adapt to them (i.e. at home, driving a car). These papers also show AmI applications in health and education, which make them even more valuable for the general society.}, language = {en} } @article{ToradmalKemmlerThomas2018, author = {Toradmal, Ajit and Kemmler, Thomas and Thomas, Bernd}, title = {Boosting the share of onsite PV-electricity utilization by optimized scheduling of a heat pump using buildings thermal inertia}, series = {Applied thermal engineering : design, processes, equipment, economics}, volume = {137}, journal = {Applied thermal engineering : design, processes, equipment, economics}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1359-4311}, doi = {10.1016/j.applthermaleng.2018.03.052}, pages = {248 -- 258}, year = {2018}, abstract = {Coupling electricity and heat sector is one of the most necessary actions for the successful energy transition. Efficient electrification for space heating and domestic hot water generation is needed for buildings, which are not connected to any district heating network, as distributed heating demand momentarily is largely met by fossil fuels. Hence, hybrid energy systems will play a pivotal role for the energy transition in buildings. Heat pumps running on PV-electricity is one of the most widely discussed combination for this purpose. In this paper, a heuristic optimization method for the optimal operation of a heat pump driven by the objective for maximum onsite PV electricity utilization is presented. In this context, the thermal flexibility of the building and a thermal energy storage (TES) for generation of domestic hot water (DHW) are activated in order to shift the operation of the heat pump to times of PV-generation. Yearly simulations for a system consisting of heat pump, PV modules, building with floor heating installation and TES for DHW generation are carried out. Variation parameters for the simulation include room temperature amplitude (0.5, 1, 1.5 and 2 K) based on mean room temperature (21 °C), PV-capacity (4, 6, 8 and 10 kW) and type of heat pump (ground source and air source type). The yearly energy balances show that buildings offer significant thermal storage capacity avoiding an additional, large TES for space heating fulfillment and improving the share of onsite PV electricity utilization. With introduction of a battery, which has been analyzed as well for different sizes (1.9, 4.8, 7.7 and 10.6 kWh), the share of onsite PVelectricity utilization can even be improved. However, thermal flexibility supplemented by the varying room temperature amplitude for a bigger battery does not improve the share of onsite PV-electricity utilization. Nevertheless, even with a battery not more than 50\% of the electrical load including operation of the heat pump can be covered by PV-electricity for the specific system under investigation. This is noteworthy on the one hand, since it indicates that a hybrid heating system consisting of heat pump and PV cannot solely cover the heat demand of residential buildings. One the other hand, this emphasizes the necessity to include further renewable sources like wind power, in order to draw the complete picture. This, however, is beyond the scope of this paper, which mainly focuses on introduction and verification of the novel control method with regard to a practical building.}, language = {en} } @misc{Steddin2017, author = {Steddin, Sven}, title = {Rollstuhl mit einem Trainingsger{\"a}t zur Bewegungstherapie der unteren Extremit{\"a}ten und rollstuhlgebundenes Trainingsger{\"a}t}, pages = {11}, year = {2017}, abstract = {Die Erfindung betrifft einen Rollstuhl mit einem Gestell mit R{\"a}dern, einem Sitz sowie zwei gegen{\"u}ber dem Sitz verlagerbaren Fußplatten und ein Trainingsger{\"a}t zur Bewegungstherapie der unteren Extremit{\"a}ten einer in dem Rollstuhl sitzenden Person. Um das Trainingsger{\"a}t vereinfacht auszubilden, enth{\"a}lt das Trainingsger{\"a}t unabh{\"a}ngig von einer Fahrbewegung des Rollstuhls betreibbar eine an dem Gestell befestigbare, von einer Steuereinheit gesteuerte Elektromaschine, welche zur wechselweise erzwungenen Verlagerung der beiden Fußplatten mit den Fußplatten mechanisch gekoppelt ist.}, language = {de} } @inproceedings{ToradmalKemmlerThomas2017, author = {Toradmal, Ajit and Kemmler, Thomas and Thomas, Bernd}, title = {Boosting the share of renewable energy by optimized scheduling of a heat pump using thermal mass of the building}, series = {The 4th Sustainable Thermal Energy Management International Conference (SusTem 2017), Alkmaar, Netherlands}, booktitle = {The 4th Sustainable Thermal Energy Management International Conference (SusTem 2017), Alkmaar, Netherlands}, publisher = {Newcastle University}, address = {Newcastle}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18267}, pages = {1 -- 18}, year = {2017}, abstract = {The main challenge when driving heat pumps by PV-electricity is balancing differing electrical and thermal demands. In this article, a heuristic method for optimal operation of a heat pump driven by a maximum share of PV-electricity is presented. For this purpose, the (DHW) are activated in order shift the operation of the heat pump to times of PV-generation. The system under consideration refers to thermal and electrical demands of a single family house. It consists of a heat pump, a thermal energy storage for DHW and of grid connected heating and generation of domestic hot water, the heat pump runs with two different supply temperatures and thereby achieving a maximum overall COP. Within the algorithm for optimization a set of heuristic rules is developed in a way that the operational characteristics of the heat pump in terms of minimum running and stopping times are met as well as the limiting constraints of upper and lower limits of room temperature and energy content of electricity generated, a varying number of heat pump schedules fulfilling the bundary conditions are created. Finally, the schedule offering the maximum on-site utilization of PV-electricity with a minimum number of starts of the heat pump, which serves as secondary condition, is selected. Yearly simulations of this combination have been carried out. Initial results of this method indicate a significant rise in on-site consumption of the PV-electricity and heating demand fulfilment by renewable electricity with no need for a massive TES for the heating system in terms of a big water tank.}, language = {en} } @book{OPUS4-1836, title = {Informatics inside : human-centered computing : Informatik-Konferenz an der Hochschule Reutlingen, 30. April 2014 / INF Studiengang Medien- und Kommunikationsinformatik, Hochschule Reutlingen}, editor = {Kloos, Uwe and Mart{\´i}nez Madrid, Natividad and Tullius, Gabriela}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-045427-1}, pages = {144}, year = {2014}, abstract = {Das Motto in diesem Jahr lautet: „Human Centered Computing", als Einstimmung auf den Schwerpunkt unseres neuen Masterprogramms. Human-Centered Computing betrachtet die Anwendung der menschlichen Informationsverarbeitung auf Computersysteme sowie deren nutzerzentrierte Gestaltung. Die Beitr{\"a}ge vertiefen beispielsweise Themen der Mensch-Maschine-Interaktion, nutzerorientierte Softwareentwicklung, kollaborative Umgebungen oder virtuelle Realit{\"a}t.}, language = {de} } @article{BraunColangeloSteckel2018, author = {Braun, Anja and Colangelo, Eduardo and Steckel, Thilo}, title = {Farming in the era of Industrie 4.0}, series = {Procedia CIRP}, volume = {72}, journal = {Procedia CIRP}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-8271}, doi = {10.1016/j.procir.2018.03.176}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18405}, pages = {979 -- 984}, year = {2018}, abstract = {Consistent supply chain management across all levels of value creation is a common approach in the industrial sector. The implementation in agricultural processes requires rethinking in the supply chain concept. The reasons are the heuristic characterized processes, the stochastic environmental conditions, the mobility of the production facilities and the low division of work. In this paper we deal with how concepts of innovative supply chain management of Industrie 4.0 could not only deliver a way to overcome said problems but also provide the foundation for the development of new forms of work and business models for Farming 4.0.}, language = {en} } @article{Estler2018, author = {Estler, Manfred}, title = {Einwandfrei ab Losgr{\"o}ße 1: wie die Digitalisierung das Qualit{\"a}tsmanagement revolutioniert}, series = {Qualit{\"a}t und Zuverl{\"a}ssigkeit : QZ ; Qualit{\"a}tsmanagement in Industrie und Dienstleistung}, volume = {63}, journal = {Qualit{\"a}t und Zuverl{\"a}ssigkeit : QZ ; Qualit{\"a}tsmanagement in Industrie und Dienstleistung}, number = {2}, publisher = {Hanser}, address = {M{\"u}nchen}, issn = {0720-1214}, pages = {28 -- 30}, year = {2018}, abstract = {Bisher sind die Auswirkungen der Digitalisierung auf das Qualit{\"a}tsmanagement kaum diskutiert worden. Nun wurden im Rahmen einer Expertenbefragung die wichtigsten Chancen und Risiken identifiziert. Eine zentrale Anforderung dabei ist ein konsequentes „Right First Time", f{\"u}r dessen Umsetzung das pr{\"a}ventive Qualit{\"a}tsmanagement eine entscheidende Rolle spielt.}, language = {de} } @article{GoeddekeHaucapHerretal.2018, author = {G{\"o}ddeke, Anna and Haucap, Justus and Herr, Annika and Wey, Christian}, title = {Flexibility in wage setting under the threat of relocation}, series = {Labour : review of labour economics and industrial relations}, volume = {32}, journal = {Labour : review of labour economics and industrial relations}, number = {1}, publisher = {Wiley-Blackwell}, address = {Oxford}, issn = {1121-7081}, doi = {10.1111/labr.12118}, pages = {1 -- 22}, year = {2018}, abstract = {Relocation of production to countries with low labour costs has induced increased labour market flexibility, which has been praised as a silver bullet for economic growth and low unemployment. Within a unionised oligopoly framework, in which a multinational firm has the option to relocate its production to a foreign country, we analyse the welfare implications of both centralised and flexible wage-setting regimes. For very low foreign wages, wage flexibility leads to higher welfare than a rigid centralised regime. In contrast, for 'intermediate' wage levels in the foreign country, an industry-wide uniform wage leads to higher social welfare than flexible wages.}, language = {en} } @article{SchmaehBettenmannHoehnetal.2018, author = {Schm{\"a}h, Marco and Bettenmann, Denis and H{\"o}hn, Maria and Ajouaou Saidi, Abdulwahid}, title = {Wertbasierter Vertrieb als Chance der Digitalisierung}, series = {Sales excellence : Zeitschrift f{\"u}r Handelsvermittlung und Vertriebsmanagement}, journal = {Sales excellence : Zeitschrift f{\"u}r Handelsvermittlung und Vertriebsmanagement}, number = {4}, publisher = {Springer Gabler}, address = {Wiesbaden}, issn = {2196-3207}, pages = {42 -- 45}, year = {2018}, abstract = {In einem disruptiven Wettbewerb h{\"a}ngt der Unternehmenserfolg unter anderem davon ab, ob die M{\"o}glichkeiten der Digitalisierung effektiv genutzt werden. Zur Generierung von Mehrwertangeboten eignet sich der Ansatz des Digital Value Selling.}, language = {de} } @article{TkatchovGruhlerZaslavskietal.2018, author = {Tkatchov, Viktor and Gruhler, Gerhard and Zaslavski, Alexander and Bublikov, Andrey and Protsenko, Stanislav}, title = {Development of the algorithm for the automated synchronization of energy consumption by electric heaters under condition of limited energy resource}, series = {Schidno-jevropejsʹkyj žurnal peredovych technolohij = Eastern-European journal of enterprise technologies}, volume = {2}, journal = {Schidno-jevropejsʹkyj žurnal peredovych technolohij = Eastern-European journal of enterprise technologies}, number = {8}, address = {Charʹkov}, issn = {1729-4061}, doi = {10.15587/1729-4061.2018.126949}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17724}, pages = {50 -- 61}, year = {2018}, abstract = {One of strategically important issues of energy security of Ukraine and the countries of Europe today is to reduce the consumption of natural gas. This task is particularly relevant in winter, when a significant amount of natural gas is consumed for heating premises. Therefore, one can predict that in the nearest future, in Ukraine and European countries, premises will be heated more frequently by electrical energy. A massive transition to electric heating of premises under conditions of the implementation of national objective in Ukraine and the countries of Europe related to a significant reduction in energy consumption necessitates to rethink the process of control over electric heating of premises. It is required that the algorithms that control power supply to premises should include mechanisms for planning the amount of electric energy consumed by an individual. This is especially true of such energy-intensive processes like heating the premises. Therefore, it is an important task for Ukraine and the countries of Europe to work out an approach for creating systems to control electric heating of premises in a house or apartment that would take into consideration not only information about the desired temperature regime, but also information on the desired amount of electricity needed for heating.}, language = {en} } @techreport{ChaudronEichinger2018, type = {Working Paper}, author = {Chaudron, Stephane and Eichinger, Henning}, title = {Eagle-eye on identities in the digital world: evolution and challenges. - (JRC technical reports ; 110266) - EUR 29044 EN}, publisher = {Publications Office of the European Union}, address = {Luixembourg}, isbn = {978-92-79-77689-2}, doi = {10.2760/48837}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17715}, pages = {48}, year = {2018}, abstract = {This publication is a Technical report by the Joint Research Centre (JRC), the European Commission's science and knowledge service. It aims to provide evidence-based scientific support to the European policymaking process. This report provides an bird's-eye view on the concept and implications of digital identities. After an introduction situating the concept of identity, the report clarifies its contemporary meaning and proposes a definition of reference. Subsequently, the authors examine the consequences of the translation of the concept of identity into the digital, internet connected world. They then analyse the particularities and consequences of this translation, which allows them to situate and define the concept of digital identities. Finally, they conclude with the challenges that digital identity poses to the digital citizen in the attempt to manage and protect its attributes with the advent of Internet of Things and blockchain technology.}, language = {en} } @book{GassmannSchuhmacherZedtwitzetal.2018, author = {Gassmann, Oliver and Schuhmacher, Alexander and Zedtwitz, Maximilian von and Reepmeyer, Gerrit}, title = {Leading pharmaceutical innovation : how to win the life science race. - 3rd ed.}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-66833-8}, pages = {179}, year = {2018}, abstract = {This book investigates and highlights the most critical challenges the pharmaceutical industry faces in an increasingly competitive environment of inflationary R\&D investments and tightening cost control pressures. The authors present three sources of pharmaceutical innovation: new management methods in the drug development pipeline; new technologies as enablers for cutting-edge R\&D; and new forms of cooperation and internationalization, such as open innovation in the early phases of R\&D. New models and methods are illustrated with cases from Europe, the US, and Asia. This third fully revised edition was expanded to reflect the latest updates in open and collaborative innovation, the greater strategic importance of venture capital and early stage investments, and the new range of emerging technologies now being put to use in pharmaceutical innovation.}, language = {en} } @inproceedings{BurchKloosJungeretal.2017, author = {Burch, Michael and Kloos, Uwe and Junger, Denise and Hagen, Isabel and Horst, Robin and Brand, Lukas and M{\"u}ller, Armin and Weinert, Benjamin}, title = {artVIS: an interactive visualization for painting collections}, series = {Proceedings of the 10th International Symposium on Visual Information Communication and Interaction}, booktitle = {Proceedings of the 10th International Symposium on Visual Information Communication and Interaction}, editor = {Biuk-Aghai, Robert}, publisher = {ACM}, address = {New York, NY}, isbn = {978-1-4503-5292-5}, doi = {10.1145/3105971.3105989}, pages = {109 -- 112}, year = {2017}, abstract = {Painting galleries typically provide a wealth of data composed of several data types. Those multivariate data are too complex for laymen like museum visitors to first, get an overview about all paintings and to look for specific categories. Finally, the goal is to guide the visitor to a specific painting that he wishes to have a more closer look on. In this paper we describe an interactive visualization tool that first provides such an overview and lets people experiment with the more than 41,000 paintings collected in the web gallery of art. To generate such an interactive tool, our technique is composed of different steps like data handling, algorithmic transformations, visualizations, interactions, and the human user working with the tool with the goal to detect insights in the provided data. We illustrate the usefulness of the visualization tool by applying it to such characteristic data and show how one can get from an overview about all paintings to specific paintings.}, language = {en} } @book{Laepple2016, author = {L{\"a}pple, Volker}, title = {Einf{\"u}hrung in die Festigkeitslehre : Lehr- und {\"U}bungsbuch}, edition = {4}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-10610-2}, doi = {10.1007/978-3-658-10611-9}, pages = {432}, year = {2016}, abstract = {Dieses Lehr- und {\"U}bungsbuch f{\"u}hrt in die wesentlichen Grundlagen der Festigkeitslehre ein. Es zeigt die wichtigsten Konzepte und Arbeitsabl{\"a}ufe eines ingenieursgerechten Festigkeitsnachweises. Besonderer Wert wird auf eine anschauliche Vermittlung des Lehrstoffs aus Sicht des Ingenieurs gelegt. Aus Gr{\"u}nden der Verst{\"a}ndlichkeit wird daher auf mathematische Herleitungen weitgehend verzichtet und stattdessen der Schwerpunkt auf eine werkstoffkundliche Betrachtungsweise gelegt. Dies wird durch umfangreiche Werkstoff- und Kennwerttabellen dokumentiert.}, language = {de} } @article{TremmlLoebbeHackbarthetal.2018, author = {Tremml, Timo and L{\"o}bbe, Sabine and Hackbarth, Andr{\´e} and Burbank, Christian}, title = {Innovative Energieprodukte f{\"u}r die Stadtwerke-Zukunft : was w{\"u}nschen die Kunden?}, series = {Energiewirtschaftliche Tagesfragen}, volume = {68}, journal = {Energiewirtschaftliche Tagesfragen}, number = {6}, publisher = {EW Medien und Kongresse GmbH}, address = {Berlin}, issn = {0720-6240}, pages = {10 -- 13}, year = {2018}, abstract = {Wenn es um innovative energiewirtschaftliche Produkte und Dienstleistungen geht, steht das eigene Energieversorungsunternehmen (EVU) hoch im Kurs. Die Ergebnisse einer Umfrage mit {\"u}ber 7.000 ausgewerteten Frageb{\"o}gen zeigen auch: f{\"u}r Eigen- und Communitystrom, Smart Home, E-Mobilit{\"a}t und B{\"u}ndelangebote gibt es spezifische Zielgruppen. Mehr Kunden interessieren sich f{\"u}r zeitvariable Tarife als f{\"u}r Flatrates. Am liebsten kontaktiert man sein EVU {\"u}ber das Kundencenter oder das Online-Kundenportal. Zielgruppenspezifische und (regional) differenzierte Marktstrategien zahlen sich aus, wozu Produktentwicklung und Vertrieb weiter professionalisiert werden m{\"u}ssen.}, language = {de} } @book{Gaspardo2018, author = {Gaspardo, Nello}, title = {Von harten Hunden und hyperaktiven Affen : der richtige Umgang mit Menschen im Beruf und Alltag}, publisher = {UVK Verlagsgesellschaft mbH}, address = {Konstanz}, isbn = {978-3-86764-834-9}, pages = {158}, year = {2018}, abstract = {Jeder Mensch ist einzigartig! Das ist fraglos richtig. Dessen ungeachtet finden Sie bei Ihren Mitmenschen wiederkehrende Charaktereigenschaften, mit denen Sie im Beruf und im Alltag umgehen m{\"u}ssen. Denken Sie nur an den harten Hund aus der Chefetage, den cleveren Fuchs aus dem Controlling oder den zappeligen, aber vor Ideen spr{\"u}henden, Affen aus der Marketingabteilung. Der Kommunikations- und Verhandlungsexperte Nello Gaspardo skizziert neun solcher Typen anhand von Tierbildern. Er zeigt deren St{\"a}rken und Schw{\"a}chen auf und verr{\"a}t Ihnen pointiert, was Sie im Umgang mit diesen Menschen unbedingt wissen sollten und wie Sie mit diesen Typen richtig kommunizieren. Das Buch ist ein unverzichtbarer Ratgeber f{\"u}r alle, die im Beruf und im Alltag gemeinsam mit anderen Menschen schnell und harmonisch Ziele erreichen m{\"o}chten.}, language = {de} } @book{Laepple2015, author = {L{\"a}pple, Volker}, title = {Einf{\"u}hrung in die Festigkeitslehre : Lehr- und {\"U}bungsbuch}, publisher = {Vieweg + Teubner}, address = {Wiesbaden}, isbn = {978-3-8348-1605-4}, pages = {432}, year = {2015}, abstract = {Dieses Lehr- und {\"U}bungsbuch f{\"u}hrt in die wesentlichen Grundlagen der Festigkeitslehre ein. Es zeigt die wichtigsten Konzepte und Arbeitsabl{\"a}ufe einer ingenieursgerechten Festigkeitsabsicherung. Besonderer Wert wird auf eine anschauliche Vermittlung des Lehrstoffs aus Sicht des Ingenieurs gelegt. Aus Gr{\"u}nden der Verst{\"a}ndlichkeit wird daher auf mathematische Herleitungen verzichtet und stattdessen der Schwerpunkt auf eine werkstoffkundliche Betrachtungsweise gelegt. Dies wird durch umfangreiche Werkstoff- und Kennwerttabellen dokumentiert. Mehr als 140 praxisorientierte {\"U}bungsaufgaben von unterschiedlichem Schwierigkeitsgrad mit Kurzl{\"o}sungen und Schwierigkeitsbewertung vertiefen das Verst{\"a}ndnis und helfen den Lernerfolg zu sichern.}, language = {de} } @inproceedings{WalzerFischerMartinezMadrid2017, author = {Walzer, Thomas and Fischer, Susanne and Mart{\´i}nez Madrid, Natividad}, title = {A case study in smart textile design process}, series = {AnBiPa 2016 : proceedings of the International Workshop on Analysis of Biometric Parameters to Detect Relationship between Stress and Sleep Quality}, booktitle = {AnBiPa 2016 : proceedings of the International Workshop on Analysis of Biometric Parameters to Detect Relationship between Stress and Sleep Quality}, editor = {Conti, Massimo}, publisher = {Universit{\`a} Politecnica delle Marche}, address = {Ancona}, isbn = {978-88-87548-09-9}, pages = {81 -- 84}, year = {2017}, abstract = {How to protect the skin from getting sun burnt? The sun can damage your skin e.g. skin cancer. But the sun has a positive effect to the human. The time in sun and the intensity are key values between enjoy the sunbath and having a negative effect to the skin. A smart device like a UV flower could help you to enjoy the sunbath. It measures the UV index around you and gives this information to a smartphone app. The development steps of such a device are described in this paper. The UV flower is made of textile fabrics.}, language = {en} } @inproceedings{StattiMartinezMadrid2017, author = {Statti, Armando and Mart{\´i}nez Madrid, Natividad}, title = {Guideline for the conceptual development of user interfaces for mobile medical applications}, series = {AnBiPa 2016 : proceedings of the International Workshop on Analysis of Biometric Parameters to Detect Relationship between Stress and Sleep Quality : November 4, 2016, Universit{\`a} Politecnica delle Marche, Ancona, Italy}, booktitle = {AnBiPa 2016 : proceedings of the International Workshop on Analysis of Biometric Parameters to Detect Relationship between Stress and Sleep Quality : November 4, 2016, Universit{\`a} Politecnica delle Marche, Ancona, Italy}, editor = {Conti, Massimo}, publisher = {Universit{\`a} Politecnica delle Marche}, address = {Ancona}, isbn = {978-88-87548-09-9}, pages = {75 -- 80}, year = {2017}, abstract = {Medical applications are becoming increasingly important in the current development of health care and therefore a crucial part of the medical industry. An essential component is the development of user interfaces for mobile medical applications. The conceptual process is crucial for the further development of the main development process. Inconsistency or errors in the conceptual phase, have a serious impact on all areas and could prevent the certification for market approval. This paper presents a guide to support developer with this process. It was developed based on a requirement analysis of the legal requirements to publish a medical device.}, language = {en} } @inproceedings{KleinMartinezMadridSeepoldetal.2017, author = {Klein, Agnes and Mart{\´i}nez Madrid, Natividad and Seepold, Ralf and Gaiduk, Maksym}, title = {Sleep phase identification based on non-invasive recordings}, series = {AnBiPa 2016 : proceedings of the International Workshop on Analysis of Biometric Parameters to Detect Relationship between Stress and Sleep Quality : November 4, 2016, Universit{\`a} Politecnica delle Marche, Ancona, Italy}, booktitle = {AnBiPa 2016 : proceedings of the International Workshop on Analysis of Biometric Parameters to Detect Relationship between Stress and Sleep Quality : November 4, 2016, Universit{\`a} Politecnica delle Marche, Ancona, Italy}, editor = {Conti, Massimo}, publisher = {Universit{\`a} Politecnica delle Marche}, address = {Ancona}, isbn = {978-88-87548-09-9}, pages = {11 -- 13}, year = {2017}, abstract = {A sleep study is a test used to diagnose sleep disorders and is usually done in sleep laboratories. The golden standard for evaluation of sleep is overnight polysomnography (PSG). Unfortunately, in-lab sleep studies are expensive and complex procedures. Furthermore, with a minimum of 22 wire attachments to the patient for sleep recording, this medical procedure is invasive and unfamiliar for the subjects. To solve this problem, low-cost home diagnostic systems, based on noninvasive recording methods requires further researches. For this intention it is important to find suitable bio vital parameters for classifying sleep phases WAKE, REM, light sleep and deep sleep without any physical impairment at the same time. We decided to analyse body movement (BM), respiration rate (RR) and heart rate variability (HRV) from existing sleep recordings to develop an algorithm which is able to classify the sleep phases automatically. The preliminary results of this project show that BM, RR and HRV are suitable to identify WAKE, REM and NREM stage.}, language = {en} } @inproceedings{GaidukSeepoldMartinezMadrid2017, author = {Gaiduk, Maksym and Seepold, Ralf and Mart{\´i}nez Madrid, Natividad}, title = {Classification of sleep stages: commonly used methods and main aims for the improvement}, series = {AnBiPa 2016 : proceedings of the International Workshop on Analysis of Biometric Parameters to Detect Relationship between Stress and Sleep Quality : November 4, 2016, Universit{\`a} Politecnica delle Marche, Ancona, Italy}, booktitle = {AnBiPa 2016 : proceedings of the International Workshop on Analysis of Biometric Parameters to Detect Relationship between Stress and Sleep Quality : November 4, 2016, Universit{\`a} Politecnica delle Marche, Ancona, Italy}, editor = {Conti, Massimo}, publisher = {Universit{\`a} Politecnica delle Marche}, address = {Ancona}, isbn = {978-88-87548-09-9}, pages = {15 -- 17}, year = {2017}, abstract = {To analyze the humans' sleep it is necessary as to identify the sleep stages, occurring during the sleep, their durations and sleep cycles. The gold standard procedure for this approach is polysomnography (PSG), which classify the sleep stages based on Rechtschaffen and Kales (R-K) method. This method aside the advantages as high accuracy has however some disadvantages, among others time-consuming and uncomfortable for the patient procedure. Therefore, the development of further methods for the sleep classification in addition to PSG is a promising topic for the investigation and this work has as its aim the presentation of possible ways and goals for this development.}, language = {en} } @inproceedings{GottsteinPetrovBuchmannetal.2017, author = {Gottstein, Robert and Petrov, Ilia and Buchmann, Alejandro and Hardock, Sergej}, title = {SIASChains: Snapshot Isolation Append Storage Chains}, series = {International Workshop on Accelerating Analytics and Data Management Systems Using Modern Processor and Storage Architectures, ADMS@VLDB 2017, Munich, Germany, September 1, 2017}, booktitle = {International Workshop on Accelerating Analytics and Data Management Systems Using Modern Processor and Storage Architectures, ADMS@VLDB 2017, Munich, Germany, September 1, 2017}, editor = {Bordawekar, Rajesh}, publisher = {Universit{\"a}t Trier}, address = {Trier}, pages = {50 -- 57}, year = {2017}, abstract = {Asymmetric read/write storage technologies such as Flash are becoming a dominant trend in modern database systems. They introduce hardware characteristics and properties which are fundamentally different from those of traditional storage technologies such as HDDs. Multi-Versioning Database Management Systems (MV-DBMSs) and Log-based Storage Managers (LbSMs) are concepts that can effectively address the properties of these storage technologies but are designed for the characteristics of legacy hardware. A critical component of MV-DBMSs is the invalidation model: commonly, transactional timestamps are assigned to the old and the new version, resulting in two independent (physical) update operations. Those entail multiple random writes as well as in-place updates, sub-optimal for new storage technologies both in terms of performance and endurance. Traditional page-append LbSM approaches alleviate random writes and immediate in-place updates, hence reducing the negative impact of Flash read/write asymmetry. Nevertheless, they entail significant mapping overhead, leading to write amplification. In this work we present an approach called Snapshot Isolation Append Storage Chains (SIAS-Chains) that employs a combination of multi-versioning, append storage management in tuple granularity and novel singly-linked (chain-like) version organization. SIAS-Chains features: simplified buffer management, multi-version indexing and introduces read/write optimizations to data placement on modern storage media. SIAS-Chains algorithmically avoids small in-place updates, caused by in-place invalidation and converts them into appends. Every modification operation is executed as an append and recently inserted tuple versions are co-located.}, language = {en} } @book{OPUS4-1814, title = {Informatics Inside: Reality++: tomorrow comes today!}, editor = {Kloos, Uwe and Mart{\´i}nez Madrid, Natividad and Tullius, Gabriela}, publisher = {Hochschule Reutlingen, INF}, address = {Reutlingen}, isbn = {978-3-00-037938-3}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-18148}, pages = {59}, year = {2012}, abstract = {Das Motto der diesj{\"a}hrigen Konferenz lautet „Reality++: Tomorrow comes today!". Unter diesem fast schon vision{\"a}ren Thema werden die Ergebnisse der verschiedenen Vertiefungsarbeiten aus den vergangenen Monaten pr{\"a}sentiert. Das Programm wird vervollst{\"a}ndigt durch Beitr{\"a}ge von Experten aus der Forschung und Industrie.}, language = {de} } @article{NuferMundt2017, author = {Nufer, Gerd and Mundt, S{\"o}ren}, title = {Was macht eine Marke aus?}, series = {Fussball Business}, volume = {0}, journal = {Fussball Business}, number = {6}, publisher = {Thomas Maurer e.U.}, address = {Ligist}, pages = {16 -- 17}, year = {2017}, abstract = {Prof. Dr. Gerd Nufer, Leiter des Deutschen Instituts f{\"u}r Sportmarketing, im Gespr{\"a}ch {\"u}ber Positionierung eines Fußballklubs als Marke, warum sportlicher Erfolg nicht immer die Grundlage daf{\"u}r sein muss und warum Klubs riskieren, die Basis zu verlieren.}, language = {de} } @article{ThomasOechsle2017, author = {Thomas, Bernd and Oechsle, Lisa}, title = {Demand Side Management in der Industrie: flexible elektrische Lasten erkennen, beschreiben und bereitstellen}, series = {Ingenieur-Spiegel : Fachmagazin f{\"u}r Ingenieure. [Hellblaue Ausgabe]}, volume = {2017}, journal = {Ingenieur-Spiegel : Fachmagazin f{\"u}r Ingenieure. [Hellblaue Ausgabe]}, number = {4}, publisher = {Public Verl.-Ges. und Anzeigenagentur}, address = {Bingen}, issn = {1868-5919}, pages = {43 -- 45}, year = {2017}, abstract = {Ziel eines aktuellen Forschungsprojektes an der Hochschule Reutlingen, das gemeinsam mit dem Ingenieurb{\"u}ro Ganssloser und der Universit{\"a}t T{\"u}bingen durchgef{\"u}hrt wird, ist es, Flexibilit{\"a}ten in Unternehmen, die im Verbund als virtuelles Kraftwerk am Strommarkt agieren, zu erkennen und nutzbar zu machen. Zu diesem Zweck soll eine Steuerbox f{\"u}r Industrie- und Gewerbebetriebe entwickelt werden, die einerseits mit der zentralen Leitwarte des virtuellen Kraftwerks kommuniziert und andererseits die Anlagen des Unternehmens so steuert, dass die zur Verf{\"u}gung stehenden Flexibilit{\"a}ten m{\"o}glichst optimal genutzt werden. Die Hochschule Reutlingen besch{\"a}ftigt sich innterhalb des Projekts mit der Erkennung und Beschreibung von Flexibilit{\"a}ten in Unternehmen.}, language = {de} } @inproceedings{VejseliRossmann2017, author = {Vejseli, Sulejman and Rossmann, Alexander}, title = {The impact of IT governance on firm performance: a literature review}, series = {Societal transformation through IS/IT: 21st Pacific-Asia Conference on Information Systems (PACIS 2017), 16-20 July, Langkawi Island, Malaysia: proceedings}, booktitle = {Societal transformation through IS/IT: 21st Pacific-Asia Conference on Information Systems (PACIS 2017), 16-20 July, Langkawi Island, Malaysia: proceedings}, editor = {Alinda, Rose}, publisher = {AIS Electronic Library (AISeL)}, pages = {13}, year = {2017}, abstract = {IT Governance (ITG) is crucial due to its significant impact on enabling innovation and enhancing firm performance. Hence, in the last decade ITG has become important in both academic and in practical research. Although several studies have investigated individual aspects of ITG success and its impact on single determinants, the causal relationship of how ITG promotes firm performance remains unclear. Thus, a more comprehensive understanding about the link between ITG and firm performance is needed. To address this gap, this research aims at understanding how ITG and firm performance are related. Therefore, we conducted a systematic literature review (1) to create an overview on how current research structures the link between ITG mechanisms and firm performance, (2) to uncover key constructs as potential mediators or moderators on the general link between ITG and performance, and (3) to set the basis for future studies on the ITG-firm performance relationship.}, language = {en} } @inproceedings{LutzRenzWicht2016, author = {Lutz, Daniel and Renz, Peter and Wicht, Bernhard}, title = {High vin SC converters and supporting circuits for power on chip applications}, series = {PwrSoC 2016, Madrid}, booktitle = {PwrSoC 2016, Madrid}, publisher = {Power Sources Manufacturers Association}, address = {Mendham, NJ}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17772}, pages = {1 -- 7}, year = {2016}, language = {en} } @article{RossmannRauschnabelWilke2017, author = {Rossmann, Alexander and Rauschnabel, Philipp and Wilke, Tim}, title = {How to create brand fans: the relationship between dynamic capabilities, customer orientation, and brand love}, series = {AMA Summer Educators' Conference proceedings}, volume = {28}, journal = {AMA Summer Educators' Conference proceedings}, publisher = {American Marketing Assoc.}, address = {Chicago, Ill.}, pages = {B-22 -- B-23}, year = {2017}, abstract = {We were able to identify a set of specific capabilities corporations need to develop in order to enhance brand love. Furthermore, the effects of most dynamic capabilities on brand love have a strong correlation to the degree of customer orientation. Other results are relevant concerning the proposed moderation and mediation hypotheses. Firstly, the impact of customer orientation on brand love is varied under specific market conditions, supporting our central moderation hypothesis (β = .259, p = .001). To be precise, the impact of customer orientation is strongest in markets that have low competitive differentiation in products and services. Other control variables like age, gender, or market form (B2B versus B2C) lead to no significant heterogeneity in the data set. Finally, mediation analyses show no significant "direct effect" of the existing DC constructs on brand love, supporting the mediating role of customer orientation.}, language = {en} } @inproceedings{ConzelmannNebel2017, author = {Conzelmann, Matthias and Nebel, Kai}, title = {Entwicklung eines nicht vergilbenden, faserbasierten BH's mittels innovativer FIM-Technologie}, series = {Proceedings Aachen-Dresden-Denkendorf International Textile Conference, Stuttgart, November 30-December 1, 2017}, booktitle = {Proceedings Aachen-Dresden-Denkendorf International Textile Conference, Stuttgart, November 30-December 1, 2017}, editor = {Keller, Sabine}, publisher = {DITF}, address = {Denkendorf}, pages = {1 -- 12}, year = {2017}, language = {de} } @article{MockerRoss2017, author = {Mocker, Martin and Ross, Jeanne}, title = {Transforming Royal Philips to reinvent healthcare in the digital age: case study}, series = {CISR working paper}, volume = {425}, journal = {CISR working paper}, publisher = {MIT Center for Information Systems Research}, address = {Cambridge, MA}, pages = {1 -- 25}, year = {2017}, abstract = {Royal Philip's goal was to use innovation to improve the lives of three billion people a year by 2025. To reach that goal, the company was shifting from selling medical products in a transactional manner to providing integrated healthcare solutions based on digital health technology ("HealthTech"). This shift required a dual transformation. On one hand, the company needed to transform how healthcare was conducted. Healthcare professionals would have to change the way they worked and reimbursement schemes needed to change to incentivize payers, providers, and patients in vastly different ways. On the other hand, Philips needed to redesign how it worked internally. The company componentized its business, introduced digital platforms, and co-created solutions with the various stakeholders of the healthcare industry. In other words: Royal Philips was transforming itself in order to reinvent healthcare in the digital age.}, language = {en} } @article{SchmaehDiffenhardMernaghetal.2018, author = {Schm{\"a}h, Marco and Diffenhard, Miriam and Mernagh, Jane and Kremel, Elli}, title = {Wie man von einer Customer-Centricity- Fokussierung profitieren kann}, series = {Marke 41 : das neue Journal f{\"u}r Marketing}, journal = {Marke 41 : das neue Journal f{\"u}r Marketing}, number = {1}, publisher = {MIM, Marken-Institut M{\"u}nchen}, address = {M{\"u}nchen}, issn = {1866-5438}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17749}, pages = {32 -- 38}, year = {2018}, abstract = {Der technische Fortschritt und die Digitalisierung haben den Kunden eine noch nie da gewesene Kontrolle {\"u}ber ihre eigene Kauferfahrung gegeben. Kunden k{\"o}nnen unter einer Vielzahl von Schnittstellen zu den Verk{\"a}ufern w{\"a}hlen und zu jeder Tageszeit Produkte und Dienstleistungen erwerben. Der Wettbewerbsdruck unter den Unternehmen steigt nicht nur aufgrund der sich st{\"a}ndig ver{\"a}ndernden Kundenerwartungen, sondern auch, weil die Kundenerfahrungen von Marktf{\"u}hrern wie Amazon, Google und Apple nachhaltig gepr{\"a}gt werden, sodass die Kunden diese positive Erfahrung als selbstverst{\"a}ndlich ansehen und auch in anderen Industrien und M{\"a}rkten erwarten (Duncan et al, 2016, S. 3).}, language = {de} } @inproceedings{SchicketanzOehlerSeitz2017, author = {Schicketanz, Dieter and Oehler, Albrecht and Seitz, Katharina}, title = {Einfluss des Kabelverlegsystems auf das Temperaturprofil im Kabelb{\"u}ndel bei Fernspeisung}, series = {Kommunikationskabelnetze: mit Ausstellung: Vortr{\"a}ge der 24. ITG-Fachtagung vom 12.-13. Dezember 2017 in K{\"o}ln. - (ITG-Fachbericht ; 275)}, booktitle = {Kommunikationskabelnetze: mit Ausstellung: Vortr{\"a}ge der 24. ITG-Fachtagung vom 12.-13. Dezember 2017 in K{\"o}ln. - (ITG-Fachbericht ; 275)}, editor = {St{\"o}cklein, Waldemar}, publisher = {VDE Verlag GmbH}, address = {Berlin ; Offenbach}, isbn = {978-3-8007-4510-4}, pages = {60 -- 66}, year = {2017}, abstract = {Es wird gezeigt, wie bei Fernspeisung die Vorhersage der Erw{\"a}rmung mit entsprechender Modellierung verbessert werden kann und wie der Einfluss von Material und Form des Kabelkanals die Erw{\"a}rmung und das das Temperaturprofil des B{\"u}ndels beeinflusst. Es wird auch vorgestellt, dass die erh{\"o}hte Erw{\"a}rmung von Metallkabelkan{\"a}len auf die geringere Emissivit{\"a}t zur{\"u}ckzuf{\"u}hren ist und wie das verbessert werden kann.}, language = {de} } @inproceedings{MockerFonstad2018, author = {Mocker, Martin and Fonstad, Nils}, title = {Driving digitization at Audi: teaching case}, series = {Transforming society with digital innovation: 38th International Conference on Information Systems (ICIS 2017): 10-13 December 2017, Seoul, South Korea: proceedings. - Vol. 5}, booktitle = {Transforming society with digital innovation: 38th International Conference on Information Systems (ICIS 2017): 10-13 December 2017, Seoul, South Korea: proceedings. - Vol. 5}, publisher = {AIS Electronic Library (AISeL)}, isbn = {978-1-5108-5369-0}, pages = {3227 -- 3241}, year = {2018}, abstract = {In 2016, German car manufacturer the Audi Group (AUDI AG) was working on an expanding array of digital innovations. The goals of these innovations varied, and included strengthening customer- and employee-facing processes, digitally enhancing existing products, and developing new, potentially disruptive business models. Audi's IT unit was critical to each of these efforts. Based on personal interviews with 11 IT- and non-IT executives at Audi, this case examines the different ways in which digitization can help to enhance and transform an organization's processes, products, and business models. The case also highlights the challenges that arise as large companies "digitize."}, language = {en} } @inproceedings{RoeckerMockerNovales2017, author = {R{\"o}cker, Jana and Mocker, Martin and Novales, Ainara}, title = {Digitized products: challenges and practices from the creative industries: completed research full paper}, series = {Twenty-third Americas Conference on Information Systems, Boston, 2017: proceedings}, booktitle = {Twenty-third Americas Conference on Information Systems, Boston, 2017: proceedings}, publisher = {AIS Electronic Library (AISeL)}, isbn = {978-0-9966831-4-2}, pages = {1 -- 10}, year = {2017}, abstract = {Recent digital technologies like the Internet of Things and Augmented Reality have brought IT into companies' core products. What were previously purely physical products are becoming hybrid or digitized. Despite receiving a lot of recent attention, digitized products have only seen a slow uptake in businesses so far. In this paper, we study the challenges that keep companies from realizing the desired impacts of digitized products and the practices they employ to address these challenges. To do so, we looked at companies from a set of industries that are highly affected by digital transformation, but at the same time hesitant to move to a more digitized world: the creative industries. Based on a literature review and twelve interviews in creative industries, we developed a conceptual model that can serve as a basis for formulating testable hypotheses for further research in this area.}, language = {en} } @article{RossmannWilkeKabaoglu2017, author = {Rossmann, Alexander and Wilke, Tim and Kabaoglu, H{\"u}seyin}, title = {Current research on electronic word-of- mouth communication: literature analysis and further research directions}, series = {AMA Winter Educators' Conference proceedings}, volume = {28}, journal = {AMA Winter Educators' Conference proceedings}, publisher = {American Marketing Assoc.}, address = {Chicago, Ill.}, pages = {D-10 -- D-19}, year = {2017}, abstract = {Electronic word-of-mouth (eWoM) communication has received a lot of attention from the academic community. As multiple research papers focus on specific facets of eWoM, there is a need to integrate current research results systematically. Thus, this paper presents a scientific literature analysis in order to determine the current state-of-the-art in the field of eWoM.}, language = {en} } @article{SchuhmacherGassmannMcCrackenetal.2018, author = {Schuhmacher, Alexander and Gassmann, Oliver and McCracken, Nigel and Hinder, Markus}, title = {Open innovation and external sources of innovation : an opportunity to fuel the R\&D pipeline and enhance decision making?}, series = {Journal of translational medicine}, volume = {16}, journal = {Journal of translational medicine}, publisher = {BioMed Central}, address = {London}, issn = {1479-5876}, doi = {10.1186/s12967-018-1499-2}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17669}, pages = {1 -- 14}, year = {2018}, abstract = {Historically, research and development (R\&D) in the pharmaceutical sector has predominantly been an in-house activity. To enable investments for game changing late-stage assets and to enable better and less costly go/no-go decisions, most companies have employed a fail early paradigm through the implementation of clinical proof-of-concept organizations. To fuel their pipelines, some pioneers started to complement their internal R\&D efforts through collaborations as early as the 1990s. In recent years, multiple extrinsic and intrinsic factors induced an opening for external sources of innovation and resulted in new models for open innovation, such as open sourcing, crowdsourcing, public-private partnerships, innovations centres, and the virtualization of R\&D. Three factors seem to determine the breadth and depth regarding how companies approach external innovation: (1) the company's legacy, (2) the company's willingness and ability to take risks and (3) the company's need to control IP and competitors. In addition, these factors often constitute the major hurdles to effectively leveraging external opportunities and assets. Conscious and differential choices of the R\&D and business models for different companies and different divisions in the same company seem to best allow a company to fully exploit the potential of both internal and external innovations.}, language = {en} } @inproceedings{RossmannWilkeStei2017, author = {Rossmann, Alexander and Wilke, Tim and Stei, Gerald}, title = {Usage of social media systems in customer service strategies}, series = {Proceedings of the 50th Hawaii International Conference on System Sciences (HICSS-50), Hilton Waikoloa Village, Hawaii, January 4-7, 2017}, booktitle = {Proceedings of the 50th Hawaii International Conference on System Sciences (HICSS-50), Hilton Waikoloa Village, Hawaii, January 4-7, 2017}, publisher = {AIS Electronic Library (AISeL)}, isbn = {978-0-9981331-0-2}, doi = {10.24251/HICSS.2017.477}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17654}, pages = {3950 -- 3959}, year = {2017}, abstract = {This paper examines the efficacy of social media systems in customer complaint handling. The emergence of social media, as a useful complement and (possibly) a viable alternative to the traditional channels of service delivery, motivates this research. The theoretical framework, developed from literature on social media and complaint handling, is tested against data collected from two different channels (hotline and social media) of a German telecommunication services provider, in order to gain insights into channel efficacy in complaint handling. We contribute to the understanding of firm's technology usage for complaint handling in two ways: (a) by conceptualizing and evaluating complaint handling quality across traditional and social media channels and (b) by comparing the impact of complaint handling quality on key performance outcomes such as customer loyalty, positive word-of-mouth, and crosspurchase intentions across traditional and social media channels.}, language = {en} } @article{RauschnabelRossmanntomDieck2017, author = {Rauschnabel, Philipp and Rossmann, Alexander and tom Dieck, M. Claudia}, title = {An adoption framework for mobile augmented reality games: the case of Pok{\´e}mon Go}, series = {Computers in human behavior}, volume = {76}, journal = {Computers in human behavior}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0747-5632}, doi = {10.1016/j.chb.2017.07.030}, pages = {276 -- 286}, year = {2017}, abstract = {Pok{\´e}mon Go was the first mobile augmented reality (AR) game to reach the top of the download charts of mobile applications. However, little is known about this new generation of mobile online AR games. Existing theories provide limited applicability for user understanding. Against this background, this research provides a comprehensive framework based on uses and gratification theory, technology risk research, and flow theory. The proposed framework aims to explain the drivers of attitudinal and intentional reactions, such as continuance in gaming or willingness to invest money in in-app purchases. A survey among 642 Pok{\´e}mon Go players provides insights into the psychological drivers of mobile AR games. The results show that hedonic, emotional, and social benefits and social norms drive consumer reactions while physical risks (but not data privacy risks) hinder consumer reactions. However, the importance of these drivers differs depending on the form of user behavior.}, language = {en} } @article{TillmannsHofstedeKrafftetal.2017, author = {Tillmanns, Sebastian and Hofstede, Frenkel ter and Krafft, Manfred and G{\"o}tz, Oliver}, title = {How to separate the wheat from the chaff: improved variable selection for new customer acquisition}, series = {Journal of marketing : JM}, volume = {81}, journal = {Journal of marketing : JM}, number = {2}, publisher = {Chicago, Ill.}, address = {American Marketing Association}, issn = {0022-2429}, doi = {10.1509/jm.15.0398}, pages = {99 -- 113}, year = {2017}, abstract = {Steady customer losses create pressure for firms to acquire new accounts, a task that is both costly and risky. Lacking knowledge about their prospects, firms often use a large array of predictors obtained from list vendors, which in turn rapidly creates massive high-dimensional data problems. Selecting the appropriate variables and their functional relationships with acquisition probabilities is therefore a substantial challenge. This study proposes a Bayesian variable selection approach to optimally select targets for new customer acquisition. Data from an insurance company reveal that this approach outperforms nonselection methods and selection methods based on expert judgment as well as benchmarks based on principal component analysis and bootstrap aggregation of classification trees. Notably, the optimal results show that the Bayesian approach selects panel-based metrics as predictors, detects several nonlinear relationships, selects very large numbers of addresses, and generates profits. In a series of post hoc analyses, the authors consider prospects' response behaviors and cross selling potential and systematically vary the number of predictors and the estimated profit per response. The results reveal that more predictors and higher response rates do not necessarily lead to higher profits.}, language = {en} } @article{TendulkarSreekumarRuppetal.2017, author = {Tendulkar, Gauri and Sreekumar, Vrinda and Rupp, Frank and Teotia, Arun and Athanasopulu, Kiriaki and Kemkemer, Ralf}, title = {Characterisation of porous knitted titanium for replacement of intervertebral disc nucleus pulposus}, series = {Scientific reports}, volume = {7}, journal = {Scientific reports}, number = {article nr. 16611}, publisher = {Nature Publishing Group}, address = {London}, issn = {2045-2322}, doi = {10.1038/s41598-017-16863-8}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17520}, pages = {1 -- 12}, year = {2017}, abstract = {Effective restoration of human intervertebral disc degeneration is challenged by numerous limitations of the currently available spinal fusion and arthroplasty treatment strategies. Consequently, use of artificial biomaterial implant is gaining attention as a potential therapeutic strategy. Our study is aimed at investigating and characterizing a novel knitted titanium (Ti6Al4V) implant for the replacement of nucleus pulposus to treat early stages of chronic intervertebral disc degeneration. Specific knitted geometry of the scaffold with a porosity of 67.67 ± 0.824\% was used to overcome tissue integration failures. Furthermore, to improve the wear resistance without impairing original mechanical strength, electro-polishing step was employed. Electro-polishing treatment changed a surface roughness from 15.22 ± 3.28 to 4.35 ± 0.87 μm without affecting its wettability which remained at 81.03 ± 8.5°. Subsequently, cellular responses of human mesenchymal stem cells (SCP1 cell line) and human primary chondrocytes were investigated which showed positive responses in terms of adherence and viability. Surface wettability was further enhanced to super hydrophilic nature by oxygen plasma treatment, which eventually caused substantial increase in the proliferation of SCP1 cells and primary chondrocytes. Our study implies that owing to scaffolds physicochemical and biocompatible properties, it could improve the clinical performance of nucleus pulposus replacement.}, language = {en} } @article{KozicaKaiser2015, author = {Kozica, Arjan and Kaiser, Stephan}, title = {Da sind wir dabei, das ist prima! Eine Reflexion {\"u}ber die Mitgliedschaft in modernen Organisationen}, series = {Organisationsentwicklung : Zeitschrift f{\"u}r Unternehmensentwicklung und Change Management}, journal = {Organisationsentwicklung : Zeitschrift f{\"u}r Unternehmensentwicklung und Change Management}, number = {1}, publisher = {Verl.-Gruppe Handelsblatt}, address = {D{\"u}sseldorf}, issn = {0724-6110}, pages = {24 -- 29}, year = {2015}, abstract = {Organisationen ver{\"a}ndern sich. Ihre Grenzen werden in Zeiten virtueller Unternehmen, Netzwerkorganisationen, Open Source Projekten und Freelancern immer durchl{\"a}ssiger. Flexibilit{\"a}t und Agilit{\"a}t sind zentrale Ziele. Wie sich die Vorstellungen {\"u}ber die Mitgliedschaft in einer Organisation wandeln und welche Konsequenzen das auch f{\"u}r das Change Management hat, zeigen die Autoren am Beispiel des Umgangs mit Wissen von externen Mitarbeitenden sowie dem Freiwilligen-Modell von Wikipedia.}, language = {de} } @article{Kozica2015, author = {Kozica, Arjan}, title = {Maßnahmen der Unternehmen zur Verbesserung der Work-Life-Balance: Managementmode oder Substanz?}, series = {Europolitan}, journal = {Europolitan}, number = {4}, publisher = {ESB Reutlingen Alumni e. V.}, address = {Reutlingen}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17506}, pages = {8 -- 11}, year = {2015}, abstract = {In zunehmendem Maße fordern Mitarbeiterinnen und Mitarbeiter, dass sich Beruf und Privatleben vereinbaren lassen. Unternehmen reagieren darauf mit Maßnahmen wie Homeoffices, Sabbaticals und Betriebskinderg{\"a}rten. Sind solche Work-Life-Balance-Maßnahmen lediglich eine aktuelle Managementmode oder handelt es sich um einen anhaltenden, substantiellen Trend? Der Beitrag stellt dar, dass es f{\"u}r beide Positionen Argumente gibt. F{\"u}r eine substantielle {\"A}nderung reichen einzelne Maßnahmen allerdings nicht aus. Vielmehr m{\"u}ssen die Arbeitswelten radikaler ver{\"a}ndert werden.}, language = {de} } @article{SalesHolleKemkemer2017, author = {Sales, Adria and Holle, Andrew and Kemkemer, Ralf}, title = {Initial contact guidance during cell spreading is contractility-independent}, series = {Soft matter}, volume = {13}, journal = {Soft matter}, number = {30}, publisher = {Royal Society of Chemistry}, address = {London}, issn = {1744-683X}, doi = {10.1039/c6sm02685k}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17448}, pages = {5158 -- 5167}, year = {2017}, abstract = {A wide variety of cell types exhibit substrate topography-based behavior, also known as contact guidance. However, the precise cellular mechanisms underlying this process are still unknown. In this study, we investigated contact guidance by studying the reaction of human endothelial cells (ECs) to well-defined microgroove topographies, both during and after initial cell spreading. As the cytoskeleton plays a major role in cellular adaptation to topographical features, two methods were used to perturb cytoskeletal structures. Inhibition of actomyosin contractility with the chemical inhibitor blebbistatatin demonstrated that initial contact guidance events are independent of traction force generation. However, cell alignment to the grooved substrate was altered at later time points, suggesting an initial 'passive' phase of contact guidance, followed by a contractility-dependent 'active' phase that relies on mechanosensitive feedback. The actin cytoskeleton was also perturbed in an indirect manner by culturing cells upside down, resulting in decreased levels of contact guidance and suggesting that a possible loss of contact between the actin cytoskeleton and the substrate could lead to cytoskeleton impairment. The process of contact guidance at the microscale was found to be primarily lamellipodia driven, as no bias in filopodia extension was observed on micron-scale grooves.}, language = {en} } @article{HuntsmanRendeiroMerrittetal.2018, author = {Huntsman, Heather and Rendeiro, Catarina and Merritt, Jennifer and Pincu, Yair and Cobert, Adam and De Lisio, Michael and Kolyvas, Emily and Dvoretskiy, Svyatoslav and Dobrucki, Iwona and Kemkemer, Ralf and Jensen, Tor}, title = {The impact of mechanically stimulated muscle-derived stromal cells on aged skeletal muscle}, series = {Experimental gerontology}, volume = {103}, journal = {Experimental gerontology}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0531-5565}, doi = {10.1016/j.exger.2017.12.012}, pages = {35 -- 46}, year = {2018}, abstract = {Perivascular stromal cells, including mesenchymal stem/stromal cells (MSCs), secrete paracrine factor in response to exercise training that can facilitate improvements in muscle remodeling. This study was designed to test the capacity for muscle-resident MSCs (mMSCs) isolated from young mice to release regenerative proteins in response to mechanical strain in vitro, and subsequently determine the extent to which strain-stimulated mMSCs can enhance skeletal muscle and cognitive performance in a mouse model of uncomplicated aging. Protein arrays confirmed a robust increase in protein release at 24 h following an acute bout of mechanical strain in vitro (10\%, 1 Hz, 5 h) compared to non-strain controls. Aged (24 month old), C57BL/6 mice were provided bilateral intramuscular injection of saline, non strain control mMSCs, or mMSCs subjected to a single bout of mechanical strain in vitro (4 ×104). No significant changes were observed in muscle weight, myofiber size, maximal force, or satellite cell quantity at 1 or 4 wks between groups. Peripheral perfusion was significantly increased in muscle at 4 wks post-mMSC injection (p < 0.05), yet no difference was noted between control and preconditioned mMSCs. Intramuscular injection of preconditioned mMSCs increased the number of new neurons and astrocytes in the dentate gyrus of the hippocampus compared to both control groups (p < 0.05), with a trend toward an increase in water maze performance noted (p=0.07). Results from this study demonstrate that acute injection of exogenously stimulated muscle-resident stromal cells do not robustly impact aged muscle structure and function, yet increase the survival of new neurons in the hippocampus.}, language = {en} } @article{HolleKalafatSalesetal.2017, author = {Holle, Andrew and Kalafat, Melih and Sales, Adria and Seufferlein, Thomas and Kemkemer, Ralf and Spatz, Joachim}, title = {Intermediate filament reorganization dynamically influences cancer cell alignment and migration}, series = {Scientific reports}, volume = {7}, journal = {Scientific reports}, number = {article nr. 45152}, publisher = {Macmillan Publishers Limited}, address = {London}, issn = {2045-2322}, doi = {10.1038/srep45152}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17423}, pages = {1 -- 14}, year = {2017}, abstract = {The interactions between a cancer cell and its extracellular matrix (ECM) have been the focus of an increasing amount of investigation. The role of the intermediate filament keratin in cancer has also been coming into focus of late, but more research is needed to understand how this piece fits in the puzzle of cytoskeleton-mediated invasion and metastasis. In Panc-1 invasive pancreatic cancer cells, keratin phosphorylation in conjunction with actin inhibition was found to be sufficient to reduce cell area below either treatment alone. We then analyzed intersecting keratin and actin fibers in the cytoskeleton of cyclically stretched cells and found no directional correlation. The role of keratin organization in Panc-1 cellular morphological adaptation and directed migration was then analyzed by culturing cells on cyclically stretched polydimethylsiloxane (PDMS) substrates, nanoscale grates, and rigid pillars. In general, the reorganization of the keratin cytoskeleton allows the cell to become more 'mobile'- exhibiting faster and more directed migration and orientation in response to external stimuli. By combining keratin network perturbation with a variety of physical ECM signals, we demonstrate the interconnected nature of the architecture inside the cell and the scaffolding outside of it, and highlight the key elements facilitating cancer cell-ECM interactions.}, language = {en} } @book{BraunKleineMoellhoffReichenbergeretal.2018, author = {Braun, Anja and Kleine-M{\"o}llhoff, Peter and Reichenberger, Volker and Seiter, Stephan}, title = {Survey concerning enablers for material efficiency activities in manufacturing, their supply chains and the transformation towards circular economy}, publisher = {Universit{\"a}tsbibliothek T{\"u}bingen}, address = {T{\"u}bingen}, doi = {10.15496/publikation-23180}, pages = {27}, year = {2018}, abstract = {In order to decouple economic growth from global material consumption it is necessary to implement material efficiency strategies at the level of single enterprises and their supply chains, and to implement circular economy aspects. Manufacturing firms face multiple implementation challenges like cost limitations, competition, innovation and stakeholder pressure, and supplier and customer relationships, among others . An extended evaluation of triggers and barriers to improve material efficiency in manufacturing companies, along the supply chain and concerning circular economy considerations is provided. This paper delivers an extended literature review, a critical discussion of the current situation and resulting challenges concerning material efficiency approaches in manufacturing supply chains. Finally, a conclusion and outlook on further research direction is given.}, language = {en} } @article{KleineMoellhoffBraunReichenbergeretal.2018, author = {Kleine-M{\"o}llhoff, Peter and Braun, Anja and Reichenberger, Volker and Seiter, Stephan}, title = {Approach to enable a material efficiency-strategy for small and medium sized manufacturing enterprises}, series = {Procedia CIRP}, volume = {69}, journal = {Procedia CIRP}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-8271}, doi = {10.1016/j.procir.2017.11.106}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17174}, pages = {787 -- 792}, year = {2018}, abstract = {It has not yet been possible to achieve the desired aim of decoupling economic growth from global material demand. Small and medium sized enterprises (SMEs) represent the backbone of most industrialized economies. Although material efficiency is of vital importance for many SMEs, few of them actually treat it as their top priority. There is a cornucopia of tools and methods available, which can be used for material efficiency purposes. These, however, have gained little groud in the SME-field. This work deals with the enabling factors for material efficiency improvements in manufacturing SMEs and projections towards aspects of supply chain and circular economy. A multi-disciplinary decoupling approach for manufacturing SMEs and an implementation roadmap for further practical development are proposed. The approach combines appropriate complexity of technology and socio-economic considerations. It enables a connection to existing methods and the implementation of established information technologies.}, language = {en} } @article{MockerFonstad2017, author = {Mocker, Martin and Fonstad, Nils}, title = {How AUDI AG is driving toward the sharing economy}, series = {MIS quarterly executive}, volume = {16}, journal = {MIS quarterly executive}, number = {4}, publisher = {The Kelley School of Business, Indiana University}, address = {Bloomington, Ind.}, issn = {1540-1960}, pages = {279 -- 293}, year = {2017}, abstract = {AUDI AG has historically focused on producing and selling premium vehicles but has begun to experiment with providing mobility services, built around car sharing. Its response to the so-called sharing economy addressed strategic and transformational challenges. Strategically, the company pursued additional sources of revenue from targeted, premium mobility services, rather than the less segmented services provided by competitors such as BMW and Zipcar. AUDI AG also transformed its organizational structure, processes and architecture to balance autonomy for innovation and integration for competitiveness.}, language = {en} } @techreport{NaegeleOhlhausenBraunetal.2018, type = {Working Paper}, author = {N{\"a}gele, Rainer and Ohlhausen, Peter and Braun, Anja and Kempe, Juan and Latzko, Tobias and Mehl, Karina and Meral, Cem and M{\"u}ller, Tobias}, title = {Bedarf und Anforderungen von KMU in Baden-W{\"u}rttemberg an Makerspaces : eine Analyse des Bedarfs und der Anforderungen von KMU im Hinblick auf die Etablierung einer Makerspace-Landschaft in Baden-W{\"u}rttemberg}, publisher = {Fraunhofer IAO}, address = {Stuttgart}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-16824}, pages = {58}, year = {2018}, abstract = {Makerspaces sind ein Element einer Open Innovation und bieten die M{\"o}glichkeit, den „klassischen Erfinder" und „T{\"u}ftler" aus seiner Garage, seinem Keller oder seiner Werkstatt herauszuholen. Ziel dabei ist es, ihm ein professionelles und leistungsf{\"a}higes Umfeld zur Realisierung seiner Ideen zu bieten, ihn in den Austausch mit Gleichgesinnten zu bringen und eine Verwertungsplattform f{\"u}r die entwickelten Ideen und Prototypen aufzubauen. Diese Optionen sind auch kleinen und mittelst{\"a}ndischen Unternehmen zug{\"a}nglich zu machen, um ihnen dar{\"u}ber die M{\"o}glichkeit zu geben, mit ihren zur Verf{\"u}gung stehenden Mitteln, {\"a}hnlich wie Großunternehmen in Sachen Innovation und Kooperation vorzugehen. Genau hier setzt die vorliegende Studie an und geht der Frage nach den Anforderungen kleiner und mittelst{\"a}ndischer Unternehmen an Makerspaces auf den Grund.}, language = {de} } @incollection{KurzJostRothetal.2018, author = {Kurz, Lisa and Jost, Larissa and Roth, Karsten and Ohlhausen, Peter}, title = {Nachhaltiges Personalmanagement: Konzeption eines interdisziplin{\"a}ren und organisations{\"u}bergreifenden Ansatzes zur Vermittlung von Nachhaltigkeitsaspekten in Lehre und Weiterbildung}, series = {Nachhaltigkeit in der Lehre: eine Herausforderung f{\"u}r Hochschulen}, booktitle = {Nachhaltigkeit in der Lehre: eine Herausforderung f{\"u}r Hochschulen}, editor = {Leal Filho, Walter}, publisher = {Springer Spektrum}, address = {Berlin}, isbn = {978-3-662-56385-4}, pages = {223 -- 242}, year = {2018}, abstract = {Vor dem Hintergrund, dass aktuell erstmals konzeptionelle Grundlagen f{\"u}r ein Nachhaltigkeitsmanagement in außeruniversit{\"a}ren Forschungseinrichtungen entwickelt worden sind, sollen nun diese Ergebnisse in die Konzeption eines interdisziplin{\"a}ren und organisations{\"u}bergreifenden Ansatzes zur Integration von Nachhaltigkeitsaspekten in Lehre und Weiterbildung einfließen. Die empirische Grundlage bildet eine qualitative, organisationsethnografische Fallstudie, in der die Autoren Deutungen von Experten und Expertinnen sowie deren Betriebs- und Alltagswissen in Bezug auf ein nachhaltiges Personalmanagement untersuchen. Auf Basis der daraus entwickelten praktischen Implementierungsm{\"o}glichkeiten in außeruniversit{\"a}ren Forschungseinrichtungen soll nun ein Ansatz entwickelt werden, um die Ergebnisse auf die Lehre in Hochschulen und die interorganisatorische Weiterbildung von Forschungseinrichtungen zu {\"u}bertragen.}, language = {de} } @article{LutzRenzWicht2018, author = {Lutz, Daniel and Renz, Peter and Wicht, Bernhard}, title = {An integrated 3-mW 120/230-V AC mains micropower supply}, series = {IEEE journal of emerging and selected topics in power electronics}, volume = {6}, journal = {IEEE journal of emerging and selected topics in power electronics}, number = {2}, publisher = {IEEE}, address = {New York, NY}, issn = {2168-6777}, doi = {10.1109/JESTPE.2018.2798504}, pages = {581 -- 591}, year = {2018}, abstract = {The maintenance issue of batteries and the limited power level of energy harvesting is addressed by the presented integrated micropower supply. Connected to the 120/230-VRMS mains, it provides a 3.3-V ac output voltage, suitable for applications such as the Internet-of Things and smart homes. The micropower supply consists of a fully integrated ac-dc and dc-dc converter with one external low-voltage surface mount device buffer capacitor, resulting in an extremely compact size. Fabricated in a low-cost 0.35-μm 700-V complimentary metal-oxide-semiconductor technology, it covers a die size of 7.7 mm². The ac-dc converter is a direct coupled, full-wave rectifier with a subsequent series regulator. The dc-dc stage is a fully integrated capacitive 4:1 converter with up to 17-V input and 47.4\% peak efficiency. The power supply comprises several high-voltage control circuits including level shifters and various types of charge pumps (CPs). A source supplied CP is utilized that supports a varying switching node potential. The overall losses are discussed and optimized, including flying capacitor bottom-plate losses. The power supply achieves an output power of 3 mW, resulting in a power density of 390 μW/mm². This exceeds prior art by a factor of 11.}, language = {en} } @article{BielaStrieglFreyetal.2017, author = {Biela, Sarah and Striegl, Britta and Frey, Kerstin and Spatz, Joachim and Kemkemer, Ralf}, title = {Distance-dependent adhesion of vascular cells on biofunctionalized nanostructures}, series = {Current directions in biomedical engineering}, volume = {3}, journal = {Current directions in biomedical engineering}, number = {2}, publisher = {De Gruyter}, address = {Berlin}, issn = {2364-5504}, doi = {10.1515/cdbme-2017-0144}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17418}, pages = {683 -- 686}, year = {2017}, abstract = {Cell-cell and cell-extracellular matrix (ECM) adhesion regulates fundamental cellular functions and is crucial for cell-material contact. Adhesion is influenced by many factors like affinity and specificity of the receptor-ligand interaction or overall ligand concentration and density. To investigate molecular details of cell ECM and cadherins (cell-cell) interaction in vascular cells functional nanostructured surfaces were used Ligand-functionalized gold nanoparticles (AuNPs) with 6-8 nm diameter, are precisely immobilized on a surface and separated by non-adhesive regions so that individual integrins or cadherins can specifically interact with the ligands on the AuNPs. Using 40 nm and 90 nm distances between the AuNPs and functionalized either with peptide motifs of the extracellular matrix (RGD or REDV) or vascular endothelial cadherins (VEC), the influence of distance and ligand specificity on spreading and adhesion of endothelial cells (ECs) and smooth muscle cells (SMCs) was investigated. We demonstrate that RGD-dependent adhesion of vascular cells is similar to other cell types and that the distance dependence for integrin binding to ECM-peptides is also valid for the REDV motif. VEC-ligands decrease adhesion significantly on the tested ligand distances. These results may be helpful for future improvements in vascular tissue engineering and for development of implant surfaces.}, language = {en} } @misc{QuenzerHohmuthRitzmannRosahletal.2017, author = {Quenzer-Hohmuth, Samuel and Ritzmann, Steffen and Rosahl, Thoralf and Wicht, Bernhard}, title = {Verfahren zur Optimierung des Betriebs eines in einem Regelkreis f{\"u}r einen Aufw{\"a}rtswandler vorgesehenen digitalen Reglers sowie ein Regelkreis und ein Computerprogrammprodukt}, pages = {15}, year = {2017}, abstract = {Erfindungsgem{\"a}ß wird ein Verfahren zur Optimierung des Betriebs eines in einem Regelkreis f{\"u}r einen Aufw{\"a}rtswandler vorgesehenen digitalen Reglers (30) zur Verf{\"u}gung gestellt. Das Verfahren umfasst die folgenden Verfahrensschritte: Auswerten (S1) mindestens einer Ausgangsgr{\"o}ße des digitalen Reglers im Betrieb des Aufw{\"a}rtswandlers. Sch{\"a}tzen (S2) des instantanen Lastwiderstandswertes (RL) in der Strecke des Regelkreises anhand der mindestens einen ausgewerteten Ausgangsgr{\"o}ße. Einstellen (S3) mindestens eines Reglerkoeffizienten des digitalen Reglers anhand des gesch{\"a}tzten instantanen Lastwiderstandswertes (RL) im Betrieb des Aufw{\"a}rtswandlers. Erfindungsgem{\"a}ß bedingt eine Ver{\"a}nderung in der Einstellung des mindestens einen Reglerkoeffizienten eine Ver{\"a}nderung der Transitfrequenz im Regelkreis. Ferner wird ein Regelkreis f{\"u}r einen Aufw{\"a}rtswandler mit einem digitalen Regler zur Verf{\"u}gung gestellt, welcher eingerichtet ist, um die Schritte des erfindungsgem{\"a}ßen Verfahrens durchzuf{\"u}hren. Des Weiteren wird ein Computerprogrammprodukt mit computerausf{\"u}hrbarem Programmcode zur Durchf{\"u}hrung des erfindungsgem{\"a}ßen Verfahrens zur Verf{\"u}gung gestellt.}, language = {de} } @inproceedings{SeidelWicht2017, author = {Seidel, Achim and Wicht, Bernhard}, title = {A gate driver IC based on high-voltage energy storing for GaN transistors}, series = {Analog Workshop 2017 : March 2-3, 2017, Technische Universit{\"a}t Berlin}, booktitle = {Analog Workshop 2017 : March 2-3, 2017, Technische Universit{\"a}t Berlin}, editor = {Gerfers, Friedel,}, publisher = {Technische Universit{\"a}t Berlin}, address = {Berlin}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17260}, pages = {28}, year = {2017}, abstract = {This work presents a fully integrated GaN gate driver in a 180nm HV BCD technology that utilizes high-voltage energy storing (HVES) in an on-chip resonant LC tank, without the need of any external capacitor. It delivers up to 11nC gate charge at a 5V GaN gate, which exceeds prior art by a factor of 45-83, supporting a broad range of GaN transistor types. The stacked LC tank covers an area of only 1.44mm², which corresponds to a superior value of 7.6nC/mm².}, language = {en} } @inproceedings{LutzRenzWicht2017, author = {Lutz, Daniel and Renz, Peter and Wicht, Bernhard}, title = {Switched-capacitor power converters for high-Vin applications}, series = {Analog Workshop 2017 : March 2-3, 2017, Technische Universit{\"a}t Berlin}, booktitle = {Analog Workshop 2017 : March 2-3, 2017, Technische Universit{\"a}t Berlin}, editor = {Gerfers, Friedel,}, publisher = {Technische Universit{\"a}t Berlin}, address = {Berlin}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17250}, pages = {26 -- 27}, year = {2017}, abstract = {In recent years, significant progress was made on switched-capacitor DCDC converters as they enable fully integrated on chip power management. New converter topologies overcame the fixed input-to-output voltage limitation and achieved high efficiency at high power densities. SC converters are attractive to not only mobile handheld devices with small input and output voltages, but also for power conversion in IoTs, industrial and automotive applications, etc. Such applications need to be capable of handling high input voltages of more than 10V. This talk highlights the challenges of the required supporting circuits and high voltage techniques, which arise for high Vin SC converters. It includes level shifters, charge pumps and back-to-back switches. High Vin conversion is demonstrated in a 4:1 SC DCDC converter with an input voltage as high as 17V with a peak efficiency of 45 \%, and a buckboost SC converter with an input voltage range starting from 2 up to 13V, which utilizes a total of 17 ratios and achieves a peak efficiency of 81.5 \%. Furthermore a highly integrated micro power supply approach is introduced, which is connected directly to the 120/230 Vrms mains, with an output power of 3mW, resulting in a power density >390μW/mm², which exceeds prior art by a factor of 11.}, language = {en} } @inproceedings{KoppenhoeferFauserHertweck2017, author = {Koppenh{\"o}fer, Christine and Fauser, Jan and Hertweck, Dieter}, title = {Managing and controlling decentralized corporate energy systems : transferring best-practice methods to the energy domain}, series = {ICEIS 2017 : proceedings of the 19th International Conference on Enterprise Information Systems, Porto, Portugal, April 26-29, 2017. - Volume 3}, booktitle = {ICEIS 2017 : proceedings of the 19th International Conference on Enterprise Information Systems, Porto, Portugal, April 26-29, 2017. - Volume 3}, editor = {Hammoudi, Slimane}, publisher = {Science and Technology Publications, Lda}, address = {Set{\´u}bal, Portugal}, doi = {10.5220/0006388605320540}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17248}, pages = {532 -- 540}, year = {2017}, abstract = {Managing decentralized corporate energy systems is a challenging task for enterprises. However, the integration of energy objectives into business strategy creates difficulties resulting in inefficient decisions. To improve this, practice-proven methods such as the balanced scorecard and enterprise architecture management are transferred to the energy domain. The methods are evaluated based on a case study. Managing multi-dimensionality and high complexity are the main drivers for an effective and efficient energy management system. Both methods show a positive impact on managing decentralized corporate energy systems and are adaptable to the energy domain.}, language = {en} } @incollection{KoppenhoeferFauserHertweck2018, author = {Koppenh{\"o}fer, Christine and Fauser, Jan and Hertweck, Dieter}, title = {Multi-model-approach towards decentralized corporate energy systems}, series = {From science to society : new trends in environmental informatics}, booktitle = {From science to society : new trends in environmental informatics}, editor = {Otjacques, Benoit}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-65687-8}, doi = {10.1007/978-3-319-65687-8_11}, pages = {117 -- 128}, year = {2018}, abstract = {Decentralized energy systems are characterized by an ad hoc planing. The missing integration of energy objectives into business strategy creates difficulties resulting in inefficient energy architectures and decisions. Practice-proven methods such as balanced scorecard, enterprise architecture management and value network approach supports the transformation path towards an effective decentralized system. The methods are evaluated based on a case study. Managing multi-dimensionality, high complexity and multiple actors are the main drivers for an effective and efficient energy management system. The underlying basis to gain the positive impacts of these methods on decentralized corporate energy systems is digitization of energy data and processes.}, language = {en} } @inproceedings{WattenbergPfost2017, author = {Wattenberg, Martin and Pfost, Martin}, title = {Optimal power point tracking for PV-systems with retrofitted energy storage systems}, series = {International Symposium on Signals, Circuits and Systems - ISSCS 2017, July 13-14, Iasi, Romania}, booktitle = {International Symposium on Signals, Circuits and Systems - ISSCS 2017, July 13-14, Iasi, Romania}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5386-0674-2}, doi = {10.1109/ISSCS.2017.8034940}, pages = {4}, year = {2017}, abstract = {This paper presents a control strategy for optimal utilization of photovoltaic (PV) generated power in conjunction with an Energy Storage System (ESS). The ESS is specifically designed to be retrofitted into existing PV systems in an end-user application. It can be attached in parallel to the PV system and connects to existing DC/AC inverters. In particular, the study covers the impact such a modification has on the output power of existing PV panels. A distinct degradation of PV output power was found due to the different power characteristics of PV panel and ESS. To overcome such degradation a novel feedback system is proposed. The feedback system continuously modifies the power characteristic of the ESS to match the PV panel and thus achieves optimal power utilization. Impact on PV and power point tracking performance is analyzed. Simulation of the proposed system is performed in MATLAB/Simulink. The results are found to be satisfactory.}, language = {en} } @inproceedings{WattenbergPfost2017, author = {Wattenberg, Martin and Pfost, Martin}, title = {A novel dual active bridge configuration for wide voltage conversion ratios}, series = {2017 19th European Conference on Power Electronics and Applications (EPE '17 ECCE Europe) : 11-14 Sept. 2017}, booktitle = {2017 19th European Conference on Power Electronics and Applications (EPE '17 ECCE Europe) : 11-14 Sept. 2017}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-90-75815-27-6}, doi = {10.23919/EPE17ECCEEurope.2017.8099143}, pages = {1 -- 10}, year = {2017}, abstract = {A novel configuration of the dual active bridge (DAB) DC/DC converter is presented, enabling more efficient wide voltage range conversion at light loads. A third phase leg as well as a center tapped transformer are introduced to one side of the converter. This concept provides two different turn ratios, thus extending the zero voltage switching operation resulting in higher efficiency. A laboratory prototype was built converting an input voltage of 40V to an output voltage in the range of 350V to 650V. Measurements show a significant increase up to 20\% in the efficiency for light-load operation.}, language = {en} } @inproceedings{KieselKernWicht2017, author = {Kiesel, Sebastian and Kern, Thomas and Wicht, Bernhard}, title = {A ramped-gate voltage sensing scheme for embedded multilevel flash in automotive}, series = {Analog Workshop 2017 : March 2-3, 2017, Technische Universit{\"a}t Berlin}, booktitle = {Analog Workshop 2017 : March 2-3, 2017, Technische Universit{\"a}t Berlin}, editor = {Gerfers, Friedel}, publisher = {Technische Universit{\"a}t Berlin}, address = {Berlin}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17191}, pages = {11}, year = {2017}, abstract = {Multilevel-cell (MLC) flash is commonly deployed in today's high density NAND memories, but low latency and high reliability requirements make it barely used in automotive embedded flash applications. This paper presents a time domain voltage sensing scheme that applies a dynamic voltage ramp at the cells' control gate (CG) in order to achieve fast and reliable sensing suitable for automotive applications.}, language = {en} } @article{BehbehaniGlenTayloretal.2018, author = {Behbehani, Mehri and Glen, Adam and Taylor, Caroline and Schuhmacher, Alexander and Claeyssens, Frederik and Haycock, John}, title = {Pre-clinical evaluation of advanced nerve guide conduits using a novel 3D in vitro testing model}, series = {International journal of bioprinting}, volume = {4}, journal = {International journal of bioprinting}, number = {1}, publisher = {Whioce}, address = {Singapore}, issn = {2424-7723}, doi = {10.18063/IJB.v4i1.123}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17152}, pages = {1 -- 12}, year = {2018}, abstract = {Autografts are the current gold standard for large peripheral nerve defects in clinics despite the frequently occurring side effects like donor site morbidity. Hollow nerve guidance conduits (NGC) are proposed alternatives to autografts, but failed to bridge gaps exceeding 3 cm in humans. Internal NGC guidance cues like microfibres are believed to enhance hollow NGCs by giving additional physical support for directed regeneration of Schwann cells and axons. In this study, we report a new 3D in vitro model that allows the evaluation of different intraluminal fibre scaffolds inside a complete NGC. The performance of electrospun polycaprolactone (PCL) microfibres inside 5 mm long polyethylene glycol (PEG) conduits were investigated in neuronal cell and dorsal root ganglion (DRG) cultures in vitro. Z-stack confocal microscopy revealed the aligned orientation of neuronal cells along the fibres throughout the whole NGC length and depth. The number of living cells in the centre of the scaffold was not significantly different to the tissue culture plastic (TCP) control. For ex vivo analysis, DRGs were placed on top of fibre-filled NGCs to simulate the proximal nerve stump. In 21 days of culture, Schwann cells and axons infiltrated the conduits along the microfibres with 2.2 ± 0.37 mm and 2.1 ± 0.33 mm, respectively. We conclude that this in vitro model can help define internal NGC scaffolds in the future by comparing different fibre materials, composites and dimensions in one setup prior to animal testing.}, language = {en} } @techreport{RoeckerMocker2018, type = {Working Paper}, author = {R{\"o}cker, Jana and Mocker, Martin}, title = {Digital-physische Produkte : Stand und Herausforderungen beim Einsatz von IT in physischen Produkten in der Kreativwirtschaft. - (Berichte aus dem Karl-Steinbuch-Forschungsprogramm ; Nr. 8)}, publisher = {MFG Stiftung Baden-W{\"u}rttemberg}, address = {Stuttgart}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17112}, pages = {98}, year = {2018}, abstract = {Im Projekt wurden die wirtschaftliche Bedeutung und der Nutzen digital physischer Produkte in der Kreativwirtschaft untersucht, sowie sich bei der Herstellung digital-physischer Produkte ergebende Herausforderungen und Praktiken zu deren {\"U}berwindung. Hierzu wurden eine Literaturrecherche, qualitative Interviews und eine Umfrage durchgef{\"u}hrt. Abschließend wurden einzelne Firmen der Kreativwirtschaft fallstudienhaft untersucht. Die Ergebnisse haben wir zu folgenden Kernbotschaften verdichtet: Digital-physische Produkte sind derzeit noch nicht sehr weit verbreitet in der Kreativwirtschaft und nur wenige Firmen sind bereits an deren Erstellung beteiligt. F{\"u}r Firmen der Kreativwirtschaft, die bereits digital-physische Produkte herstellen, haben solche Produkte bisher eine geringe wirtschaftliche Bedeutung. Dagegen wird die strategische Bedeutung schon heute als hoch eingesch{\"a}tzt und Firmen erwarten durchschnittlich eine Verdopplung der wirtschaftlichen Bedeutung (Anteil am Umsatz >50\%) in den n{\"a}chsten drei Jahren. Firmen, die ihre digital-physischen Produkte als erfolgreich einsch{\"a}tzen, geben an, sich stark auf das physische Produkt zu fokussieren: Synergien werden zwischen physischen und digitalen Angeboten geschaffen, physische Produkte werden durch digitale Komponenten attraktiver gestaltet und die digitale Anreichung physischer Produkte dient als Marketing-Tool. Firmen geben an, dass dies zu einer Steigerung des Absatzes und der Zufriedenheit bestehender Kunden des bisher rein physischen Produktes f{\"u}hrt.}, language = {de} } @article{RossMockerZoelen2018, author = {Ross, Jeanne and Mocker, Martin and Zoelen, Edgar van}, title = {Architecting a digital transformation at Royal Philips}, series = {MIT CISR research briefing}, volume = {18}, journal = {MIT CISR research briefing}, number = {1}, publisher = {MIT Center for Information Systems Research}, address = {Cambridge, MA}, pages = {1 -- 4}, year = {2018}, abstract = {To deliver on a digital value proposition, companies must fundamentally re-architect. In other words, they must redesign their processes, systems, roles, data, and habits to allow them to iteratively create, enhance, an replace digital offerings. This briefing examines how Royal Philips is transforming its value proposition - and its entire company - to seize the opportunities presented by digital technologies.}, language = {en} } @book{HassBug2018, author = {Hass, Carolin and Bug, Peter}, title = {The use of apps in food retailing: creating value added for customers and companies}, publisher = {Reutlingen University}, address = {Reutlingen}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17683}, pages = {68}, year = {2018}, abstract = {This paper investigates if food ^ retailing mobile applications from Germany, Austria, USA and the United Kingdom are meant to stay a marginal topic in grocery shopping, or if they have the potential to significantly shape the future of grocery retailing by serving as competitive advantages that can fulfil customer requirements and satisfaction. It has filtered out success factors in form of functions of grocery apps and it has extracted key competencies that can be used to create customer value. The Kano model can help selecting the right app functions. But, there are other prerequisites, like customers' general attitude towards technology and their acceptance towards any kind of apps, that play an important role looking at the big picture of apps in grocery retailing. However, this paper has contributed one vital part of giving more importance to apps in grocery retailing in form of app functions that clearly deliver customer value. In short, apps that fit customers' needs and that provide usability and convenience clearly have the potential to shape the future of grocery retailing - if key barriers towards app use are eliminated and if incentives are given that overcome scepticism.}, language = {en} } @inproceedings{WillEcksteinBargenetal.2017, author = {Will, Devid and Eckstein, Lutz and Bargen, Steven von and Taefi, Tessa and Galbas, Roland}, title = {State of the art analysis for connected and automated driving within the SCOUT project}, series = {ITS World Congress 2017 Montreal, October 29 - November 2}, booktitle = {ITS World Congress 2017 Montreal, October 29 - November 2}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:rt2-opus4-17090}, pages = {1 -- 8}, year = {2017}, abstract = {This publication gives a short introduction and overview of the European project SCOUT and introduces a methodology for a holistic approach to record the state of the art in technical (vehicle and connectivity, human factors regarding physiologic and ergonomic level) and non-technical enablers (societal, economic, legal, regulatory and policy level) of connected and automated driving in Europe. The paper addresses beside the technical topics of environmental perception, E/E architecture, actuators and security, the state of the art of the legal framework in the context of connected and automated driving.}, language = {en} } @inproceedings{SchusterZhangKelleretal.2017, author = {Schuster, Frank and Zhang, Wei and Keller, Christoph and Haueis, Martin and Curio, Crist{\´o}bal}, title = {Joint graph optimization towards crowd based mapping}, series = {IEEE ITSC 2017 : 20th International Conference on Intelligent Transportation Systems : Mielparque Yokohama in Yokohama, Kanagawa, Japan, October 16-19, 2017}, booktitle = {IEEE ITSC 2017 : 20th International Conference on Intelligent Transportation Systems : Mielparque Yokohama in Yokohama, Kanagawa, Japan, October 16-19, 2017}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5386-1526-3}, doi = {10.1109/ITSC.2017.8317727}, pages = {179 -- 184}, year = {2017}, abstract = {In any autonomous driving system, the map for localization plays a vital part that is often underestimated. The map describes the world around the vehicle outside of the sensor view and is a main input into the decision making process in highly complicated scenarios. Thus there are strict requirements towards the accuracy and timeliness of the map. We present a robust and reliable approach towards crowd based mapping using a GraphSLAM framework based on radar sensors. We show on a parking lot that even in dynamically changing environments, the localization results are very accurate and reliable even in unexplored terrain without any map data. This can be achieved by collaborative map updates from multiple vehicles. To show these claims experimentally, the Joint Graph Optimization is compared to the ground truth on an industrial parking space. Mapping performance is evaluated using a dense map from a total station as reference and localization results are compared with a deeply coupled DGPS/INS system.}, language = {en} }