@inproceedings{AmirBauckhageChircuetal.2022, author = {Amir, Malik and Bauckhage, Christian and Chircu, Alina and Czarnecki, Christian and Knopf, Christian and Piatkowski, Nico and Sultanow, Eldar}, title = {What can we expect from quantum (digital) twins?}, series = {Wirtschaftsinformatik 2022 Proceedings}, booktitle = {Wirtschaftsinformatik 2022 Proceedings}, publisher = {AIS Electronic Library (AISeL)}, pages = {1 -- 14}, year = {2022}, abstract = {Digital twins enable the modeling and simulation of real-world entities (objects, processes or systems), resulting in improvements in the associated value chains. The emerging field of quantum computing holds tremendous promise forevolving this virtualization towards Quantum (Digital) Twins (QDT) and ultimately Quantum Twins (QT). The quantum (digital) twin concept is not a contradiction in terms - but instead describes a hybrid approach that can be implemented using the technologies available today by combining classicalcomputing and digital twin concepts with quantum processing. This paperpresents the status quo of research and practice on quantum (digital) twins. It alsodiscuses their potential to create competitive advantage through real-timesimulation of highly complex, interconnected entities that helps companies better address changes in their environment and differentiate their products andservices.}, language = {en} } @inproceedings{RitschelStenzelCzarneckietal.2021, author = {Ritschel, Konstantin and Stenzel, Adina and Czarnecki, Christian and Hong, Chin-Gi}, title = {Realizing robotic process automation potentials: an architectural perspective on a real-life implementation case}, series = {GI Edition Proceedings Band 314 "INFORMATIK 2021" Computer Science \& Sustainability}, booktitle = {GI Edition Proceedings Band 314 "INFORMATIK 2021" Computer Science \& Sustainability}, editor = {Gesellschaft f{\"u}r Informatik e.V. (GI),}, publisher = {K{\"o}llen}, address = {Bonn}, isbn = {9783885797081}, issn = {1617-5468}, doi = {10.18420/informatik2021-108}, pages = {1303 -- 1311}, year = {2021}, abstract = {The initial idea of Robotic Process Automation (RPA) is the automation of business processes through a simple emulation of user input and output by software robots. Hence, it can be assumed that no changes of the used software systems and existing Enterprise Architecture (EA) is required. In this short, practical paper we discuss this assumption based on a real-life implementation project. We show that a successful RPA implementation might require architectural work during analysis, implementation, and migration. As practical paper we focus on exemplary lessons-learned and new questions related to RPA and EA.}, language = {en} } @inproceedings{AuthCzarneckiBensberg2019, author = {Auth, Gunnar and Czarnecki, Christian and Bensberg, Frank}, title = {Impact of robotic process automation on enterprise architectures}, series = {GI Edition Proceedings Band 295 INFORMATIK 2019, Workshop-Beitr{\"a}ge}, booktitle = {GI Edition Proceedings Band 295 INFORMATIK 2019, Workshop-Beitr{\"a}ge}, editor = {Draude, Claude and Lange, Martin and Sick, Bernhard and Gesellschaft f{\"u}r Informatik e.V. (GI),}, publisher = {K{\"o}llen}, address = {Bonn}, isbn = {9783885796893}, issn = {1617-5468}, doi = {10.18420/inf2019_ws05}, pages = {59 -- 65}, year = {2019}, abstract = {The initial idea of Robotic Process Automation (RPA) is the automation of business processes through the presentation layer of existing application systems. For this simple emulation of user input and output by software robots, no changes of the systems and architecture is required. However, considering strategic aspects of aligning business and technology on an enterprise level as well as the growing capabilities of RPA driven by artificial intelligence, interrelations between RPA and Enterprise Architecture (EA) become visible and pose new questions. In this paper we discuss the relationship between RPA and EA in terms of perspectives and implications. As workin- progress we focus on identifying new questions and research opportunities related to RPA and EA.}, language = {en} } @inproceedings{BrockmannSultanowCzarnecki2019, author = {Brockmann, Carsten and Sultanow, Eldar and Czarnecki, Christian}, title = {Is enterprise architecture still relevant in the digital age?}, series = {GI Edition Proceedings Band 295 INFORMATIK 2019, Workshop-Beitr{\"a}ge}, booktitle = {GI Edition Proceedings Band 295 INFORMATIK 2019, Workshop-Beitr{\"a}ge}, editor = {Draude, Claude and Lange, Martin and Sick, Bernhard}, publisher = {K{\"o}llen}, address = {Bonn}, isbn = {9783885796893}, issn = {1617-5468}, doi = {10.18420/inf2019_ws01}, pages = {21 -- 21}, year = {2019}, language = {en} } @inproceedings{BensbergAuthCzarneckietal.2018, author = {Bensberg, Frank and Auth, Gunnar and Czarnecki, Christian and W{\"o}rndle, Christopher}, title = {Transforming literature-intensive research processes through text analytics - design, implementation and lessons learned}, editor = {Kemal İlter, H.}, doi = {10.6084/m9.figshare.7582073.v1}, pages = {9 Seiten}, year = {2018}, abstract = {The continuing growth of scientific publications raises the question how research processes can be digitalized and thus realized more productively. Especially in information technology fields, research practice is characterized by a rapidly growing volume of publications. For the search process various information systems exist. However, the analysis of the published content is still a highly manual task. Therefore, we propose a text analytics system that allows a fully digitalized analysis of literature sources. We have realized a prototype by using EBSCO Discovery Service in combination with IBM Watson Explorer and demonstrated the results in real-life research projects. Potential addressees are research institutions, consulting firms, and decision-makers in politics and business practice.}, language = {en} } @inproceedings{BrockmannSultanowCzarnecki2018, author = {Brockmann, Carsten and Sultanow, Eldar and Czarnecki, Christian}, title = {Enterprise architectures between agility and traditional methodologies}, series = {GI Edition Proceedings Band 285 Workshops der INFORMATIK 2018}, booktitle = {GI Edition Proceedings Band 285 Workshops der INFORMATIK 2018}, editor = {Czarnecki, Christian and Brockmann, Carsten and Sultanow, Eldar and Koschmider, Agnes and Selzer, Annika and Gesellschaft f{\"u}r Informatik e. V.,}, publisher = {K{\"o}llen}, address = {Bonn}, isbn = {9783885796794}, issn = {1617-5468}, pages = {1 Seite}, year = {2018}, abstract = {For this year's workshop on Enterpirse Architecture in Research and Practice we have received eight submissions from which four have passed the rigorous peer-review. The acceptance quote of 50\% assures that only advancements in the field are included in our workshop.}, language = {en} } @article{PhilippEfthimiouPaganoetal.2022, author = {Philipp, Mohr and Efthimiou, Nikos and Pagano, Fiammetta and Kratochwil, Nicolaus and Pizzichemi, Marco and Tsoumpas, Charalampos and Auffray, Etiennette and Ziemons, Karl}, title = {Image reconstruction analysis for positron emission tomography with heterostructured scintillators}, series = {IEEE Transactions on Radiation and Plasma Medical Sciences}, volume = {7}, journal = {IEEE Transactions on Radiation and Plasma Medical Sciences}, number = {1}, publisher = {IEEE}, address = {New York, NY}, issn = {2469-7311}, doi = {10.1109/TRPMS.2022.3208615}, pages = {41 -- 51}, year = {2022}, abstract = {The concept of structure engineering has been proposed for exploring the next generation of radiation detectors with improved performance. A TOF-PET geometry with heterostructured scintillators with a pixel size of 3.0×3.1×15 mm3 was simulated using Monte Carlo. The heterostructures consisted of alternating layers of BGO as a dense material with high stopping power and plastic (EJ232) as a fast light emitter. The detector time resolution was calculated as a function of the deposited and shared energy in both materials on an event-by-event basis. While sensitivity was reduced to 32\% for 100 μm thick plastic layers and 52\% for 50 μm, the CTR distribution improved to 204±49 ps and 220±41 ps respectively, compared to 276 ps that we considered for bulk BGO. The complex distribution of timing resolutions was accounted for in the reconstruction. We divided the events into three groups based on their CTR and modeled them with different Gaussian TOF kernels. On a NEMA IQ phantom, the heterostructures had better contrast recovery in early iterations. On the other hand, BGO achieved a better contrast to noise ratio (CNR) after the 15th iteration due to the higher sensitivity. The developed simulation and reconstruction methods constitute new tools for evaluating different detector designs with complex time responses.}, language = {en} } @incollection{BauschatBennerKlingeetal.2022, author = {Bauschat, J.-Michael and Benner, Miriam and Klinge, Henner and Ziegler, Simon}, title = {Urbane Mobilit{\"a}t entdeckt die 3. Dimension}, series = {Transforming Mobility - What Next?}, booktitle = {Transforming Mobility - What Next?}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-36429-8}, doi = {10.1007/978-3-658-36430-4_53}, pages = {895 -- 916}, year = {2022}, abstract = {Der Themenkomplex urbane Mobilit{\"a}t ist getrieben durch den Verkehrsinfarkt in Ballungszentren, durch Luftverschmutzung und L{\"a}rm, sowie den Trend zum Leben in der Stadt in den st{\"a}dteplanerischen Fokus ger{\"u}ckt. Emissionsneutrale Antriebskonzepte in der Luftfahrt f{\"u}hren zu Ans{\"a}tzen Flugger{\"a}te einzusetzen, die batteriegetrieben vertikal aufsteigen und landen k{\"o}nnen. Flugphysikalisch und energetisch ist diese Technik nur dann sinnvoll, wenn es zwingende Gr{\"u}nde gibt (z.B. Rettungseins{\"a}tze), daher wird der flugphysikalische Hintergrund prinzipiell erl{\"a}utert. Es werden einige aktuelle Lufttransportkonzepte f{\"u}r eine urbane Personenbef{\"o}rderung vorgestellt. Sollte es verst{\"a}rkt zu Lufttransport {\"u}ber St{\"a}dten kommen, m{\"u}ssen betroffene Luftr{\"a}ume geordnet und {\"u}berwacht werden. Wie kompatibel Lufttransportsysteme mit den heute bereits relevanten urbanen Bef{\"o}rderungsmitteln sein m{\"u}ssen, wird kritisch diskutiert. Abschließend werden die Aspekte Akzeptanz durch die Kunden und Wirtschaftlichkeit ebenso angerissen, wie die hochproblematische Rohstoffgewinnung, die Entsorgung und das Recycling von Batterien.}, language = {de} } @article{CzarneckiBensbergAuth2019, author = {Czarnecki, Christian and Bensberg, Frank and Auth, Gunnar}, title = {Die Rolle von Softwarerobotern f{\"u}r die zuk{\"u}nftige Arbeitswelt}, series = {HMD Praxis der Wirtschaftsinformatik}, volume = {56}, journal = {HMD Praxis der Wirtschaftsinformatik}, number = {4}, publisher = {Springer}, address = {Cham}, issn = {2198-2775}, doi = {10.1365/s40702-019-00548-z}, pages = {795 -- 808}, year = {2019}, abstract = {Im Rahmen der Digitalisierung ist die zunehmende Automatisierung von bisher manuellen Prozessschritten ein Aspekt, der massive Auswirkungen auf die zuk{\"u}nftige Arbeitswelt haben wird. In diesem Kontext werden an den Einsatz von Softwarerobotern zur Prozessautomatisierung hohe Erwartungen gekn{\"u}pft. Bei den Implementierungsans{\"a}tzen wird die Diskussion aktuell insbesondere durch Robotic Process Automation (RPA) und Chatbots gepr{\"a}gt. Beide Ans{\"a}tze verfolgen das gemeinsame Ziel einer 1:1-Automatisierung von menschlichen Handlungen und dadurch ein direktes Ersetzen von Mitarbeitern durch Maschinen. Bei RPA werden Prozesse durch Softwareroboter erlernt und automatisiert ausgef{\"u}hrt. Dabei emulieren RPA-Roboter die Eingaben auf der bestehenden Pr{\"a}sentationsschicht, so dass keine {\"A}nderungen an vorhandenen Anwendungssystemen notwendig sind. Am Markt werden bereits unterschiedliche RPA-L{\"o}sungen als Softwareprodukte angeboten. Durch Chatbots werden Ein- und Ausgaben von Anwendungssystemen {\"u}ber nat{\"u}rliche Sprache realisiert. Dadurch ist die Automatisierung von unternehmensexterner Kommunikation (z. B. mit Kunden) aber auch von unternehmensinternen Assistenzt{\"a}tigkeiten m{\"o}glich. Der Beitrag diskutiert die Auswirkungen von Softwarerobotern auf die Arbeitswelt anhand von Anwendungsbeispielen und erl{\"a}utert die unternehmensindividuelle Entscheidung {\"u}ber den Einsatz von Softwarerobotern anhand von Effektivit{\"a}ts- und Effizienzzielen.}, language = {de} } @article{BensbergAuthCzarnecki2018, author = {Bensberg, Frank and Auth, Gunnar and Czarnecki, Christian}, title = {Einsatz von Text Analytics zur Unterst{\"u}tzung literaturintensiver Forschungsprozesse: Konzeption, Realisierung und Lessons Learned}, series = {Anwendungen und Konzepte der Wirtschaftsinformatik}, volume = {2018}, journal = {Anwendungen und Konzepte der Wirtschaftsinformatik}, number = {8}, publisher = {AKWI}, address = {Luzern}, issn = {2296-4592}, doi = {10.26034/lu.akwi.2018.3221}, pages = {1 -- 6}, year = {2018}, abstract = {Das anhaltende Wachstum wissenschaftlicher Ver{\"o}ffentlichungen wirft die Fragestellung auf, wie Literaturana-lysen im Rahmen von Forschungsprozessen digitalisiert und somit produktiver realisiert werden k{\"o}nnen. Insbesondere in informationstechnischen Fachgebieten ist die Forschungspraxis durch ein rasant wachsendes Publikationsaufkommen gekennzeichnet. Infolgedessen bietet sich der Einsatz von Methoden der Textanalyse (Text Analytics) an, die Textdaten automatisch vorbereiten und verarbeiten k{\"o}nnen. Erkenntnisse entstehen dabei aus Analysen von Wortarten und Subgruppen, Korrelations- sowie Zeitreihenanalysen. Dieser Beitrag stellt die Konzeption und Realisierung eines Prototypen vor, mit dem Anwender bibliographische Daten aus der etablierten Literaturdatenbank EBSCO Discovery Service mithilfe textanalytischer Methoden erschließen k{\"o}nnen. Der Prototyp basiert auf dem Analysesystem IBM Watson Explorer, das Hochschulen lizenzkostenfrei zur Verf{\"u}gung steht. Potenzielle Adressaten des Prototypen sind Forschungseinrichtungen, Beratungsunternehmen sowie Entscheidungstr{\"a}ger in Politik und Unternehmenspraxis.}, language = {de} } @article{CzarneckiWinkelmannSpiliopoulou2013, author = {Czarnecki, Christian and Winkelmann, Axel and Spiliopoulou, Myra}, title = {Referenzprozessabl{\"a}ufe f{\"u}r Telekommunikationsunternehmen: Eine Erweiterung des eTOM-Modells}, series = {Wirtschaftsinformatik}, volume = {55}, journal = {Wirtschaftsinformatik}, number = {2}, publisher = {Springer Fachmedien}, address = {Wiesbaden}, issn = {1861-8936}, doi = {10.1007/s11576-013-0351-9}, pages = {83 -- 97}, year = {2013}, abstract = {Der Telekommunikationsmarkt erf{\"a}hrt substanzielle Ver{\"a}nderungen. Neue Gesch{\"a}ftsmodelle, innovative Dienstleistungen und Technologien erfordern Reengineering, Transformation und Prozessstandardisierung. Mit der Enhanced Telecom Operation Map (eTOM) bietet das TM Forum ein international anerkanntes de facto Referenz-Prozess-Framework basierend auf spezifischen Anforderungen und Auspr{\"a}gungen der Telekommunikationsindustrie an. Allerdings enth{\"a}lt dieses Referenz-Framework nur eine hierarchische Sammlung von Prozessen auf unterschiedlichen Abstraktionsebenen. Eine Kontrollsicht verstanden als sequenzielle Anordnung von Aktivit{\"a}ten und daraus resultierend ein realer Prozessablauf fehlt ebenso wie eine Ende-zu-Ende-Sicht auf den Kunden. In diesem Artikel erweitern wir das eTOM-Referenzmodell durch Referenzprozessabl{\"a}ufe, in welchen wir das Wissen {\"u}ber Prozesse in Telekommunikationsunternehmen abstrahieren und generalisieren. Durch die Referenzprozessabl{\"a}ufe werden Unternehmen bei dem strukturierten und transparenten (Re-)Design ihrer Prozesse unterst{\"u}tzt. Wir demonstrieren die Anwendbarkeit und N{\"u}tzlichkeit unserer Referenzprozessabl{\"a}ufe in zwei Fallstudien und evaluieren diese anhand von Kriterien f{\"u}r die Bewertung von Referenzmodellen. Die Referenzprozessabl{\"a}ufe wurden vom TM Forum in den Standard aufgenommen und als Teil von eTOM Version 9 ver{\"o}ffentlicht. Dar{\"u}ber hinaus diskutieren wir die Komponenten unseres Ansatzes, die auch außerhalb der Telekommunikationsindustrie angewandt werden k{\"o}nnen.}, language = {de} } @article{CzarneckiSpiliopoulou2012, author = {Czarnecki, Christian and Spiliopoulou, Myra}, title = {A holistic framework for the implementation of a next generation network}, series = {International Journal of Business Information Systems}, volume = {9}, journal = {International Journal of Business Information Systems}, number = {4}, publisher = {Inderscience Enterprises}, address = {Olney, Bucks}, issn = {1746-0972}, doi = {10.1504/IJBIS.2012.046291}, pages = {385 -- 401}, year = {2012}, abstract = {As the potential of a next generation network (NGN) is recognised, telecommunication companies consider switching to it. Although the implementation of an NGN seems to be merely a modification of the network infrastructure, it may trigger or require changes in the whole company, because it builds upon the separation between service and transport, a flexible bundling of services to products and the streamlining of the IT infrastructure. We propose a holistic framework, structured into the layers 'strategy', 'processes' and 'information systems' and incorporate into each layer all concepts necessary for the implementation of an NGN, as well as the alignment of these concepts. As a first proof-of-concept for our framework we have performed a case study on the introduction of NGN in a large telecommunication company; we show that our framework captures all topics that are affected by an NGN implementation.}, language = {en} } @article{CzarneckiWinkelmannSpiliopoulou2010, author = {Czarnecki, Christian and Winkelmann, Axel and Spiliopoulou, Myra}, title = {Services in electronic telecommunication markets: a framework for planning the virtualization of processes}, series = {Electronic Markets}, volume = {20}, journal = {Electronic Markets}, number = {3-4}, publisher = {Springer}, address = {Berlin}, issn = {1422-8890}, doi = {10.1007/s12525-010-0045-8}, pages = {197 -- 207}, year = {2010}, abstract = {The potential of electronic markets in enabling innovative product bundles through flexible and sustainable partnerships is not yet fully exploited in the telecommunication industry. One reason is that bundling requires seamless de-assembling and re-assembling of business processes, whilst processes in telecommunication companies are often product-dependent and hard to virtualize. We propose a framework for the planning of the virtualization of processes, intended to assist the decision maker in prioritizing the processes to be virtualized: (a) we transfer the virtualization pre-requisites stated by the Process Virtualization Theory in the context of customer-oriented processes in the telecommunication industry and assess their importance in this context, (b) we derive IT-oriented requirements for the removal of virtualization barriers and highlight their demand on changes at different levels of the organization. We present a first evaluation of our approach in a case study and report on lessons learned and further steps to be performed.}, language = {en} } @inproceedings{SchnejiderWisselinkCzarnecki2017, author = {Schnejider, Dominik and Wisselink, Frank and Czarnecki, Christian}, title = {Transformation von Wertsch{\"o}pfungsketten durch das Internet der Dinge - Bewertungsrahmen und Fallstudie}, series = {GI Edition Proceedings Band 275 INFORMATIK 2017}, booktitle = {GI Edition Proceedings Band 275 INFORMATIK 2017}, editor = {Eibl, Maximilian and Gaedke, Martin and Gesellschaft f{\"u}r Informatik e. V. (GI),}, publisher = {K{\"o}llen}, address = {Bonn}, isbn = {978-3-88579-669-5}, issn = {1617-5468}, doi = {10.18420/in2017_208}, pages = {2081 -- 2094}, year = {2017}, abstract = {Momentan finden in vielen Branchen umfassende Ver{\"a}nderungen von M{\"a}rkten und Wertsch{\"o}pfungsketten statt, welche auch als Digitale Transformation bezeichnet werden. In diesem Zusammenhang wird das Internet der Dinge (Internet of Things, IoT) als ein wichtiger technischer Enabler der Ver{\"a}nderungen angesehen. Prim{\"a}re Ziele des IoT sind die Steuerung physischer Gegen-st{\"a}nde aus der Distanz und das Erfassen von Informationen aus dem Umfeld dieser Gegenst{\"a}nde. Welche neuen Gesch{\"a}fts-bzw. Partnermodelle entstehen durch die gemeinsame Nutzung von IoT-Daten und Big-Data-Technologien und welcher qualitative Mehrwert wird dadurch geschaffen? Als Antwort wird in diesem Beitrag ein Bewertungsrahmen zur qualitativen Wertsch{\"o}pfungsanalyse von IoT vorgeschlagen. Anhand dieses Bewertungsrahmens wird ein Anwendungsfall untersucht, der in anonymisierter Form an konkrete Praxisprojekte angelehnt ist. Konkret wird ein Anwendungsfall betrachtet, der eine Abfallwirtschaft 2.0 basierend auf dem Einsatz von IoT vorschl{\"a}gt. Aus den Untersuchungsergebnissen gehen beispielsweise Erkenntnisse hervor, wie Gesch{\"a}ftsmodelle auf Basis eines unentgeltlichen Informationsaustauschs durch IoT gestaltet werden k{\"o}nnen.}, language = {de} } @inproceedings{ThomeCzarneckiAuthetal.2017, author = {Thom{\´e}, Tristan Eberhard and Czarnecki, Christian and Auth, Gunnar and Bensberg, Frank}, title = {Erweiterung des Referenzprozessmodells eTOM um die Anforderungen des deutschen IT-Sicherheitsgesetzes}, series = {Prozesse, Technologie, Anwendungen, Systeme und Management 2017. Angewandte Forschung in der Wirtschaftsinformatik}, booktitle = {Prozesse, Technologie, Anwendungen, Systeme und Management 2017. Angewandte Forschung in der Wirtschaftsinformatik}, editor = {Barton, Thomas and Herrmann, Frank and Meister, Vera G. and M{\"u}ller, Christian and Seel, Christian}, publisher = {mana-Buch}, address = {Heide}, isbn = {978-3-944330-56-3}, pages = {51 -- 60}, year = {2017}, abstract = {Kritische Infrastrukturen sind prim{\"a}re Ziele krimineller Hacker. Der Deutsche Bundestag reagierte darauf am 25. Juli 2015 mit einem Gesetz zur Verbesserung der Sicherheit von ITSystemen, dem IT-Sicherheitsgesetz. Dies verlangt von Betreibern kritischer Infrastrukturen, angemessene Mindeststandards f{\"u}r organisatorische und technische Sicherheit zu implementieren, um den Betrieb und die Verf{\"u}gbarkeit dieser Infrastruktur zu gew{\"a}hrleisten. Telekommunikationsunternehmen sind einerseits von diesem Gesetz in besonderem Maße betroffen und verf{\"u}gen andererseits mit dem Rahmenwerk enhanced Telecom Operations Map (eTOM) {\"u}ber ein international anerkanntes Referenzmodell zur Gestaltung von Gesch{\"a}ftsprozessen in dieser Branche. Da s{\"a}mtliche Telekommunikationsunternehmen in Deutschland verpflichtet sind, das Gesetz innerhalb eines bestimmten Zeitrahmens zu implementieren, pr{\"a}sentiert dieser Beitrag einen Vorschlag zur Erweiterung von eTOM um die relevanten Anforderungen des deutschen IT-Sicherheitsgesetzes.}, language = {de} } @inproceedings{SchneiderWisselinkCzarnecki2017, author = {Schneider, Dominik and Wisselink, Frank and Czarnecki, Christian}, title = {Qualitative Wertsch{\"o}pfungsanalyse von Anwendungsf{\"a}llen des Narrowband Internet of Things}, series = {Prozesse, Technologie, Anwendungen, Systeme und Management 2017. Angewandte Forschung in der Wirtschaftsinformatik}, booktitle = {Prozesse, Technologie, Anwendungen, Systeme und Management 2017. Angewandte Forschung in der Wirtschaftsinformatik}, editor = {Barton, Thomas and Herrmann, Frank and Meister, Vera G. and M{\"u}ller, Christian and Seel, Christian}, publisher = {mana-Buch}, address = {Heide}, isbn = {978-3-944330-56-3}, pages = {184 -- 193}, year = {2017}, abstract = {Prim{\"a}re Ziele des Internets der Dinge sind die Steuerung physischer Gegenst{\"a}nde aus der Distanz und das Erfassen von Informationen aus dem Umfeld dieser Gegenst{\"a}nde. Dazu werden Hardwarekomponenten in Gegenst{\"a}nde des t{\"a}glichen Lebens und die Umwelt integriert. Mithilfe von Informations- und Kommunikationstechnologien entsteht hieraus das Internet der Dinge (Internet of Things, IoT). Vor einem Jahr wurde mit Narrowband Internet of Things (NB-IoT) eine Technologie die es erm{\"o}glicht, Hardwarekomponenten energieeffizient und unmittelbar {\"u}ber das Mobilfunknetz zu vernetzen. Gegenst{\"a}nde werden dadurch {\"u}ber große Reichweiten eigenst{\"a}ndig kommunikationsf{\"a}hig. Das IoT steht mit NB-IoT vor einem gestiegenen Nutzenpotenzial, da eine zunehmende Anzahl miteinander verbundener Gegenst{\"a}nde und der Austausch gr{\"o}ßerer Datenmengen realisierbar sind. Damit sind aus wirtschaftlicher Sicht neue, innovative Anwendungsf{\"a}lle des IoT m{\"o}glich, die auch bereits in der Praxis diskutiert werden. In diesem Beitrag wird anhand eines konkreten Anwendungsfalls untersucht, welche neuen Gesch{\"a}fts- bzw. Partnermodelle durch die gemeinsame Nutzung von NB-IoT-Daten und Big Data-Technologien entstehen und welcher qualitative Mehrwert f{\"u}r die an einem Anwendungsfall beteiligten Stakeholder geschaffen wird. Dazu wird - einem konstruktionsorientierten Forschungsansatz folgend - ein Bewertungsrahmen zur qualitativen Wertsch{\"o}pfungsanalyse von NB-IoT entwickelt, der u.a. auf der Schablone nach Cockburn und dem Business Model Canvas basiert. Anhand dieses Bewertungsrahmens wird ein Anwendungsfall untersucht, der in anonymisierter Form an konkrete Praxisprojekte angelehnt ist. Konkret wird ein Anwendungsfall betrachtet, der einen Fahrradverleih 2.0 basierend auf dem Einsatz von NB-IoT vorschl{\"a}gt. Aus den Untersuchungsergebnissen gehen beispielsweise Erkenntnisse hervor, wie Gesch{\"a}ftsmodelle auf}, language = {de} } @inproceedings{CzarneckiDietze2017, author = {Czarnecki, Christian and Dietze, Christian}, title = {Domain-Specific reference modeling in the telecommunications industry}, series = {DESRIST 2017: Designing the Digital Transformation}, booktitle = {DESRIST 2017: Designing the Digital Transformation}, editor = {Maedche, Alexander and vom Brocke, Jan and Hevner, Alan}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-59144-5}, doi = {10.1007/978-3-319-59144-5_19}, pages = {313 -- 329}, year = {2017}, abstract = {The telecommunications industry is currently going through a major transformation. In this context, the enhanced Telecom Operations Map (eTOM) is a domain-specific process reference model that is offered by the industry organization TM Forum. In practice, eTOM is well accepted and confirmed as de facto standard. It provides process definitions and process flows on different levels of detail. This article discusses the reference modeling of eTOM, i.e., the design, the resulting artifact, and its evaluation based on three project cases. The application of eTOM in three projects illustrates the design approach and concrete models on strategic and operational levels. The article follows the Design Science Research (DSR) paradigm. It contributes with concrete design artifacts to the transformational needs of the telecommunications industry and offers lessons-learned from a general DSR perspective.}, language = {en} } @inproceedings{Czarnecki2016, author = {Czarnecki, Christian}, title = {Design und Nutzung einer industriespezifischen Referenzarchitektur f{\"u}r die Telekommunikationsindustrie}, series = {GI Edition Proceedings Band 259 INFORMATIK 2016. 26.-30. September 2016 Klagenfurt}, booktitle = {GI Edition Proceedings Band 259 INFORMATIK 2016. 26.-30. September 2016 Klagenfurt}, editor = {Mayr, Heinrich C. and Pinzger, Martin and Gesellschaft f{\"u}r Informatik e. V. (GI),}, publisher = {K{\"o}llen}, address = {Bonn}, isbn = {9783885796534}, issn = {1617-5468}, pages = {807 -- 814}, year = {2016}, abstract = {Zur Unterst{\"u}tzung des Transformationsbedarfs von Telekommunikationsunternehmen sind die Referenzmodelle des TM Forums in der Praxis weltweit anerkannt. Dabei findet jedoch meist eine losgel{\"o}ste Nutzung f{\"u}r spezifische Einzelthemen statt. Daher f{\"u}hrt dieser Artikel die bestehenden Inhalte in einer industriespezifischen, {\"u}bergreifenden Referenzarchitektur zusammen. Der Fokus liegt auf den Ebenen Aufbauorganisation, Prozesse, Applikationen und Daten. Dar{\"u}ber hinaus werden inhaltliche Architekturdom{\"a}nen zur Strukturierung angeboten. Die Referenzarchitektur ist hierarchisch aufgebaut und wird hier beispielhaft f{\"u}r ausgew{\"a}hlte, aggregierte Inhalte beschrieben. Als erste Evaluation wird die Anwendung der Referenzarchitektur in drei Praxisprojekten erl{\"a}utert.}, language = {de} } @inproceedings{BensbergAuthCzarnecki2018, author = {Bensberg, Frank and Auth, Gunnar and Czarnecki, Christian}, title = {Unterst{\"u}tzung von Wissenstransferprozessen durch Erschließung von Literaturdatenbanken - ein gestaltungsorientierter Ansatz auf Basis von Text Analytics}, series = {Wissenstransfer in der Wirtschaftsinformatik Fachgespr{\"a}ch im Rahmen der MKWI 2018}, booktitle = {Wissenstransfer in der Wirtschaftsinformatik Fachgespr{\"a}ch im Rahmen der MKWI 2018}, editor = {Hofmann, Georg Rainer and Alm, Wolfgang}, publisher = {IMI-Verlag ; Hochschule Aschaffenburg, Information Management Institut}, address = {Aschaffenburg}, isbn = {9783981844207}, pages = {6 -- 15}, year = {2018}, abstract = {Angesichts des anhaltenden Wachstums wissenschaftlicher Ver{\"o}ffentlichungen werden Instrumente ben{\"o}tigt, um Literaturanalysen durch Digitalisierung produktiver zu gestalten. Dieser Beitrag stellt einen Ansatz vor, der bibliographische Daten aus der Literaturdatenbank EBSCO Discovery Service mithilfe von Text-Analytics-Methoden erschließt. Die L{\"o}sung basiert auf dem Textanalysesystem IBM Watson Explorer und eignet sich f{\"u}r explorative Literaturanalysen, um beispielsweise den Status quo emergierender Technologiefelder in der Literatur zu reflektieren. Die generierten Ergebnisse sind in den Kontext der zunehmenden Werkzeugunterst{\"u}tzung des Literaturrechercheprozesses einzuordnen und k{\"o}nnen f{\"u}r intra- sowie interinstitutionelle Wissenstransferprozesse in Forschungs- und Beratungskontexten genutzt werden.}, language = {de} } @article{CzarneckiDietze2020, author = {Czarnecki, Christian and Dietze, Christian}, title = {Gestaltungsorientierte Forschung am Beispiel der Referenzmodellierung in der Telekommunikationsindustrie}, series = {HMD Praxis der Wirtschaftsinformatik}, volume = {57}, journal = {HMD Praxis der Wirtschaftsinformatik}, number = {2}, publisher = {Springer Nature}, address = {Cham}, issn = {2198-2775}, doi = {10.1365/s40702-020-00594-y}, pages = {310 -- 323}, year = {2020}, abstract = {Am Beispiel der Telekommunikationsindustrie zeigt der Beitrag eine konkrete Ausgestaltung anwendungsorientierter Forschung, die sowohl f{\"u}r die Praxis als auch f{\"u}r die Wissenschaft nutzen- und erkenntnisbringend ist. Forschungsgegenstand sind die Referenzmodelle des Industriegremiums TM Forum, die von vielen Telekommunikationsunternehmen zur Transformation ihrer Strukturen und Systeme genutzt werden. Es wird die langj{\"a}hrige Forschungst{\"a}tigkeit bei der Weiterentwicklung und Anwendung dieser Referenzmodelle beschrieben. Dabei wird ein konsequent gestaltungsorientierter Forschungsansatz verfolgt. Das Zusammenspiel aus kontinuierlicher Weiterentwicklung in Zusammenarbeit mit einem Industriegremium und der Anwendung in vielf{\"a}ltigen Praxisprojekten f{\"u}hrt zu einer erfolgreichen Symbiose aus praktischer Nutzengenerierung sowie wissenschaftlichem Erkenntnisgewinn. Der Beitrag stellt den gew{\"a}hlten Forschungsansatz anhand konkreter Beispiele vor. Darauf basierend werden Empfehlungen und Herausforderungen f{\"u}r eine gestaltungs- und praxisorientierte Forschung diskutiert.}, language = {de} } @inproceedings{NursinskiStolbergGangatharanCzarnecki2016, author = {Nursinski-Stolberg, Andr{\´e} and Gangatharan, Kiritharan and Czarnecki, Christian}, title = {Development of a subject-oriented reference process model for the telecommunications industry}, series = {GI Edition Proceedings Band 259 INFORMATIK 2016}, booktitle = {GI Edition Proceedings Band 259 INFORMATIK 2016}, editor = {Mayr, Heinrich C. and Pinzger, Martin}, publisher = {Gesellschaft f{\"u}r Informatik e.V.}, address = {Bonn}, isbn = {9783885796534}, issn = {1617-5468}, pages = {699 -- 712}, year = {2016}, abstract = {Generally the usage of reference models can be structured top-down or bottom-up. The practical need of agile change and flexible organizational implementation requires a consistent mapping to an operational level. In this context, well-established reference process models are typically structured top-down. The subject-oriented Business Process Management (sBPM) offers a modeling concept that is structured bottom-up and concentrates on the process actors on an operational level. This paper applies sBPM to the enhanced Telecom Operations Map (eTOM), a well-accepted reference process model in the telecommunications industry. The resulting design artifact is a concrete example for a combination of a bottom-up and top-down developed reference model. The results are evaluated and confirmed in practical context through the involvement of the industry body TMForum.}, language = {en} } @inproceedings{CzarneckiWinkelmannSpiliopoulou2012, author = {Czarnecki, Christian and Winkelmann, Axel and Spiliopoulou, Myra}, title = {Transformation in Telecommunication - Analyse und Clustering von Real-life Projekten}, series = {Multikonferenz Wirtschaftsinformatik 2012}, booktitle = {Multikonferenz Wirtschaftsinformatik 2012}, editor = {Mattfeld, Dirk Christian and Robra-Bissantz, Susanne}, publisher = {Gito}, address = {Berlin}, isbn = {9783942183635}, pages = {985 -- 998}, year = {2012}, abstract = {Die Ver{\"a}nderungen des Telekommunikationsmarktes haben in der Praxis zu einer Vielzahl von Transformationsprojekten gef{\"u}hrt. Was geh{\"o}rt aber zu einem "Transformationsprojekt", welche Prozesse und Systeme werden ver{\"a}ndert? Zur Beantwortung dieser Frage haben wir 184 Berichte zu Projekten analysiert, die als "Transformationsprojekte" bezeichnet waren. F{\"u}r die Analyse haben wir einen Kodierungsrahmen konzipiert und anhand dessen die Berichte mit einem hierarchischen Clustering-Verfahren in Themen gruppiert. Die Ergebnisse liefern Hinweise {\"u}ber die in der Praxis gesetzten Schwerpunkte und Priorit{\"a}ten. Sie k{\"o}nnen somit als Unterst{\"u}tzung f{\"u}r Unternehmen dienen, die ein Transformationsprojekt planen. Sie weisen zudem darauf hin, in welchen Bereichen eines Unternehmens Unterst{\"u}tzung durch wissenschaftlich erprobte Werkzeuge und Modelle n{\"o}tig ist.}, language = {de} } @inproceedings{CzarneckiWinkelmannSpiliopoulou2011, author = {Czarnecki, Christian and Winkelmann, Axel and Spiliopoulou, Myra}, title = {Making business systems in the telecommunication industry more customer-oriented}, series = {Information Systems Development : Business Systems and Services: Modeling and Development}, booktitle = {Information Systems Development : Business Systems and Services: Modeling and Development}, editor = {Pokorny, Jaroslav and Repa, Vaclav and Richta, Karel and Wojtkowski, Wita and Linger, Henry and Barry, Chris and Lang, Michael}, publisher = {Springer}, address = {New York}, isbn = {978-1-4419-9645-9 (Print)}, doi = {10.1007/978-1-4419-9790-6_14}, pages = {169 -- 180}, year = {2011}, abstract = {Market changes have forced telecommunication companies to transform their business. Increased competition, short innovation cycles, changed usage patterns, increased customer expectations and cost reduction are the main drivers. Our objective is to analyze to what extend transformation projects have improved the orientation towards the end-customers. Therefore, we selected 38 real-life case studies that are dealing with customer orientation. Our analysis is based on a telecommunication-specific framework that aligns strategy, business processes and information systems. The result of our analysis shows the following: transformation projects that aim to improve the customer orientation are combined with clear goals on costs and revenue of the enterprise. These projects are usually directly linked to the customer touch points, but also to the development and provisioning of products. Furthermore, the analysis shows that customer orientation is not the sole trigger for transformation. There is no one-fits-all solution; rather, improved customer orientation needs aligned changes of business processes as well as information systems related to different parts of the company.}, language = {en} } @inproceedings{Czarnecki2011, author = {Czarnecki, Christian}, title = {Gestaltung von Customer Relationship Management {\"u}ber die Grenzen von Telekommunikationsunternehmen hinweg}, series = {Tagungsband zum Doctoral Consortium der WI 2009}, booktitle = {Tagungsband zum Doctoral Consortium der WI 2009}, editor = {Eymann, Torsten}, publisher = {Universit{\"a}t Bayreuth Lehrstuhl f{\"u}r Wirtschaftsinformatik}, address = {Bayreuth}, issn = {1864-9300}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:703-opus-5462}, pages = {11 -- 23}, year = {2011}, abstract = {Durch die Fragmentierung von Wertsch{\"o}pfungsketten ergeben sich neue Herausforderungen f{\"u}r das Management von Kundenbeziehungen. Die Dissertation untersucht die daraus resultierenden Anforderungen an eine {\"u}bergreifende Integration von Customer Relationship Management in der Telekommunikationsindustrie. Ziel ist es, durch Anwendung von Methoden eines Enterprise Architecture Framework eine {\"u}bergreifend L{\"o}sung zu gestalten. Grundlegende Pr{\"a}misse dabei ist, dass die {\"u}bergreifende Gestaltung eines Customer Relationship Management f{\"u}r alle an der Wertsch{\"o}pfung beteiligten Unternehmen vorteilhaft ist.}, language = {de} } @inproceedings{CzarneckiHeuserSpiliopoulou2009, author = {Czarnecki, Christian and Heuser, Marcus and Spiliopoulou, Myra}, title = {How does the implementation of a next generation network influence a telecommunication company?}, series = {European and Mediterranean Conference on Information Systems}, booktitle = {European and Mediterranean Conference on Information Systems}, editor = {Irani, Zahir}, publisher = {Brunel University}, address = {London}, isbn = {9781902316697}, pages = {1 -- 11}, year = {2009}, abstract = {As the potential of a Next Generation Network (NGN) is recognized, telecommunication companies consider switching to it. Although the implementation of an NGN seems to be merely a modification of the network infrastructure, it may trigger or require changes in the whole company and even influence the company strategy. To capture the effects of NGN we propose a framework based on concepts of business engineering and technical recommendations for the introduction of NGN technology. The specific design of solutions for the layers "Strategy", "Processes" and "Information Systems" as well as their interdependencies are an essential characteristic of the developed framework. We have per-formed a case study on NGN implementation and observed that all layers captured by our framework are influenced by the introduction of an NGN.}, language = {en} } @incollection{CzarneckiAuth2018, author = {Czarnecki, Christian and Auth, Gunnar}, title = {Prozessdigitalisierung durch Robotic 7 Process Automation}, series = {Digitalisierung in Unternehmen: von den theoretischen Ans{\"a}tzen zur praktischen Umsetzung}, booktitle = {Digitalisierung in Unternehmen: von den theoretischen Ans{\"a}tzen zur praktischen Umsetzung}, editor = {Barton, Thomas and M{\"u}ller, Christian and Seel, Christian}, publisher = {Springer}, address = {Wiesbaden}, isbn = {9783658227739}, doi = {10.1007/978-3-658-22773-9_7}, pages = {113 -- 131}, year = {2018}, abstract = {Im Rahmen der digitalen Transformation werden innovative Technologiekonzepte, wie z. B. das Internet der Dinge und Cloud Computing als Treiber f{\"u}r weitreichende Ver{\"a}nderungen von Organisationen und Gesch{\"a}ftsmodellen angesehen. In diesem Kontext ist Robotic Process Automation (RPA) ein neuartiger Ansatz zur Prozessautomatisierung, bei dem manuelle T{\"a}tigkeiten durch sogenannte Softwareroboter erlernt und automatisiert ausgef{\"u}hrt werden. Dabei emulieren Softwareroboter die Eingaben auf der bestehenden Pr{\"a}sentationsschicht, so dass keine {\"A}nderungen an vorhandenen Anwendungssystemen notwendig sind. Die innovative Idee ist die Transformation der bestehenden Prozessausf{\"u}hrung von manuell zu digital, was RPA von traditionellen Ans{\"a}tzen des Business Process Managements (BPM) unterscheidet, bei denen z. B. prozessgetriebene Anpassungen auf Ebene der Gesch{\"a}ftslogik notwendig sind. Am Markt werden bereits unterschiedliche RPA-L{\"o}sungen als Softwareprodukte angeboten. Gerade bei operativen Prozessen mit sich wiederholenden Verarbeitungsschritten in unterschiedlichen Anwendungssystemen sind gute Ergebnisse durch RPA dokumentiert, wie z. B. die Automatisierung von 35 \% der Backoffice-Prozesse bei Telefonica. Durch den vergleichsweise niedrigen Implementierungsaufwand verbunden mit einem hohen Automatisierungspotenzial ist in der Praxis (z. B. Banken, Telekommunikation, Energieversorgung) ein hohes Interesse an RPA vorhanden. Der Beitrag diskutiert RPA als innovativen Ansatz zur Prozessdigitalisierung und gibt konkrete Handlungsempfehlungen f{\"u}r die Praxis. Dazu wird zwischen modellgetriebenen und selbstlernenden Ans{\"a}tzen unterschieden. Anhand von generellen Architekturen von RPA-Systemen werden Anwendungsszenarien sowie deren Automatisierungspotenziale, aber auch Einschr{\"a}nkungen, diskutiert. Es folgt ein strukturierter Markt{\"u}berblick ausgew{\"a}hlter RPA-Produkte. Anhand von drei konkreten Anwendungsbeispielen wird die Nutzung von RPA in der Praxis verdeutlicht.}, language = {de} } @incollection{SchneiderWisselinkCzarnecki2018, author = {Schneider, Dominik and Wisselink, Frank and Czarnecki, Christian}, title = {Nutzen und Rahmenbedingungen 5 informationsgetriebener Gesch{\"a}ftsmodelle des Internets der Dinge}, series = {Digitalisierung in Unternehmen: von den theoretischen Ans{\"a}tzen zur praktischen Umsetzung}, booktitle = {Digitalisierung in Unternehmen: von den theoretischen Ans{\"a}tzen zur praktischen Umsetzung}, editor = {Barton, Thomas and M{\"u}ller, Christian and Seel, Christian}, publisher = {Springer}, address = {Wiesbaden}, isbn = {9783658227739}, doi = {10.1007/978-3-658-22773-9_5}, pages = {67 -- 85}, year = {2018}, abstract = {Im Kontext der zunehmenden Digitalisierung wird das Internet der Dinge (englisch: Internet of Things, IoT) als ein technologischer Treiber angesehen, durch den komplett neue Gesch{\"a}ftsmodelle im Zusammenspiel unterschiedlicher Akteure entstehen k{\"o}nnen. Identifizierte Schl{\"u}sselakteure sind unter anderem traditionelle Industrieunternehmen, Kommunen und Telekommunikationsunternehmen. Letztere sorgen mit der Bereitstellung von Konnektivit{\"a}t daf{\"u}r, dass kleine Ger{\"a}te mit winzigen Batterien nahezu {\"u}berall und direkt an das Internet angebunden werden k{\"o}nnen. Es sind schon viele IoT-Anwendungsf{\"a}lle auf dem Markt, die eine Vereinfachung f{\"u}r Endkunden darstellen, wie beispielsweise Philips Hue Tap. Neben Gesch{\"a}ftsmodellen basierend auf Konnektivit{\"a}t besteht ein großes Potenzial f{\"u}r informationsgetriebene Gesch{\"a}ftsmodelle, die bestehende Gesch{\"a}ftsmodelle unterst{\"u}tzen sowie weiterentwickeln k{\"o}nnen. Ein Beispiel daf{\"u}r ist der IoT-Anwendungsfall Park and Joy der Deutschen Telekom AG, bei dem Parkpl{\"a}tze mithilfe von Sensoren vernetzt und Autofahrer in Echtzeit {\"u}ber verf{\"u}gbare Parkpl{\"a}tze informiert werden. Informationsgetriebene Gesch{\"a}ftsmodelle k{\"o}nnen auf Daten aufsetzen, die in IoT-Anwendungsf{\"a}llen erzeugt werden. Zum Beispiel kann ein Telekommunikationsunternehmen Mehrwert sch{\"o}pfen, indem es aus Daten entscheidungsrelevantere Informationen - sogenannte Insights - ableitet, die zur Steigerung der Entscheidungsagilit{\"a}t genutzt werden. Außerdem k{\"o}nnen Insights monetarisiert werden. Die Monetarisierung von Insights kann nur nachhaltig stattfinden, wenn sorgf{\"a}ltig gehandelt wird und Rahmenbedingungen ber{\"u}cksichtigt werden. In diesem Kapitel wird das Konzept informationsgetriebener Gesch{\"a}ftsmodelle erl{\"a}utert und anhand des konkreten Anwendungsfalls Park and Joy verdeutlicht. Dar{\"u}ber hinaus werden Nutzen, Risiken und Rahmenbedingungen diskutiert.}, language = {de} } @incollection{HaukCzarneckiDietze2018, author = {Hauk, Joachim and Czarnecki, Christian and Dietze, Christian}, title = {Prozessorientierte Messung der Customer Experience am Beispiel der Telekommunikationsindustrie}, series = {Customer Experience im Zeitalter des Kunden : Best Practices, Lessons Learned und Forschungsergebnisse}, booktitle = {Customer Experience im Zeitalter des Kunden : Best Practices, Lessons Learned und Forschungsergebnisse}, editor = {Rusnjak, Andreas and Schallmo, Daniel R. A.}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-18961-7}, doi = {10.1007/978-3-658-18961-7_7}, pages = {195 -- 216}, year = {2018}, abstract = {Hohe Wettbewerbsintensit{\"a}t und gestiegene Kundenanforderungen erfordern bei Telekommunikationsunternehmen eine aktive Gestaltung der Customer Experience (CX). Ein wichtiger Aspekt dabei ist die CX-Messung. Traditionelle Zufriedenheitsmessungen sind oft nicht ausreichend, um die Kundenerfahrung in komplexen Prozessen vollst{\"a}ndig zu erfassen. Daher wird in diesem Kapitel eine prozess{\"u}bergreifende Referenzl{\"o}sung zur CX-Messung am Beispiel der Telekommunikationsindustrie vorgeschlagen. Ausgangspunkt ist ein industriespezifisches Prozessmodell, das sich an dem Referenzmodell eTOM orientiert. Dieses wird um Messpunkte erweitert, die Schwachstellen in Bezug auf die CX identifizieren. F{\"u}r die erkannten Schwachstellen werden {\"u}ber eine Referenzmatrix m{\"o}gliche Ausl{\"o}ser abgeleitet und anhand von typischen Gesch{\"a}ftsfallmengen bewertet. Somit ist eine direkte Zuordnung und Erfolgsmessung konkreter Maßnahmen zur Behebung der Schwachstellen m{\"o}glich. Die so entwickelte Referenzl{\"o}sung wurde im Projekt K1 bei der Deutschen Telekom erfolgreich umgesetzt. Details zur Umsetzung werden als Fallstudien dargestellt.}, language = {de} } @incollection{CzarneckiBensberg2019, author = {Czarnecki, Christian and Bensberg, Frank}, title = {Enhanced Telecom Operations Map (eTOM)}, series = {Enzyklop{\"a}die der Wirtschaftsinformatik}, booktitle = {Enzyklop{\"a}die der Wirtschaftsinformatik}, publisher = {Gito}, address = {Berlin}, pages = {1 -- 4}, year = {2019}, language = {de} } @article{CzarneckiGeierPflug2017, author = {Czarnecki, Christian and Geier, Jari and Pflug, Karolin}, title = {Netzvirtualisierung durch SDN und NFV : Unternehmensprozesse auf dem Pr{\"u}fstand}, series = {LANline}, journal = {LANline}, publisher = {AWI Aktuelles Wissen Verl.-Ges.}, address = {Trostberg}, issn = {0942-4172}, year = {2017}, abstract = {Kundenanforderungen an Netzwerke haben sich in den vergangenen Jahren stark ver{\"a}ndert. Mit NFV und SDN sind Unternehmen technisch in der Lage, diesen gerecht zu werden. Die Provider stehen jedoch vor großen Herausforderungen: Insbesondere Produkte und Prozesse m{\"u}ssen angepasst und agiler werden, um die St{\"a}rken von NFV und SDN zum Kundenvorteil auszuspielen.}, language = {de} } @article{CzarneckiHeuserKraemeretal.2006, author = {Czarnecki, Christian and Heuser, Marcus and Kr{\"a}mer, Christian and Stummer, Christoph and Theisinger, Felix and Wettklo, Michael}, title = {How to get more customer satisfaction : Erfolg im Wettbewerb durch kundenzentrierte Prozesse}, series = {Detecon Management Report}, journal = {Detecon Management Report}, number = {3}, publisher = {Detecon Internat. GmbH}, address = {Eschborn}, issn = {1867-3147}, pages = {29 -- 33}, year = {2006}, abstract = {Unternehmen sind in der Regel {\"u}berzeugt, dass sie die Bed{\"u}rfnisse ihrer Kunden in den Mittelpunkt stellen. Aber in der direkten Interaktion mit dem Kunden zeigen sie h{\"a}ufig Schw{\"a}chen. Der folgende Beitrag illustriert, wie durch eine konsequente Ausrichtung der Wertsch{\"o}pfungsprozesse auf die zentralen Kundenbed{\"u}rfnisse ein Dreifacheffekt erzielt werden kann: Nachhaltig erh{\"o}hte Kundenzufriedenheit, gesteigerte Effizienz und eine Differenzierung im Wettbewerb.}, language = {de} } @incollection{CzarneckiHongSchmitzetal.2021, author = {Czarnecki, Christian and Hong, Chin-Gi and Schmitz, Manfred and Dietze, Christian}, title = {Enabling digital transformation through cognitive robotic process automation at Deutsche Telekom Services Europe}, series = {Digitalization Cases Vol. 2 : Mastering digital transformation for global business}, booktitle = {Digitalization Cases Vol. 2 : Mastering digital transformation for global business}, editor = {Urbach, Nils and R{\"o}glinger, Maximilian and Kautz, Karlheinz and Alias, Rose Alinda and Saunders, Carol and Wiener, Martin}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-80002-4 (Print)}, doi = {10.1007/978-3-030-80003-1}, pages = {123 -- 138}, year = {2021}, abstract = {Subject of this case is Deutsche Telekom Services Europe (DTSE), a service center for administrative processes. Due to the high volume of repetitive tasks (e.g., 100k manual uploads of offer documents into SAP per year), automation was identified as an important strategic target with a high management attention and commitment. DTSE has to work with various backend application systems without any possibility to change those systems. Furthermore, the complexity of administrative processes differed. When it comes to the transfer of unstructured data (e.g., offer documents) to structured data (e.g., MS Excel files), further cognitive technologies were needed.}, language = {en} } @incollection{CzarneckiFettke2021, author = {Czarnecki, Christian and Fettke, Peter}, title = {Robotic process automation : Positioning, structuring, and framing the work}, series = {Robotic process automation : Management, technology, applications}, booktitle = {Robotic process automation : Management, technology, applications}, editor = {Czarnecki, Christian and Fettke, Peter}, publisher = {De Gruyter}, address = {Oldenbourg}, isbn = {978-3-11-067668-6 (Print)}, doi = {10.1515/9783110676693-202}, pages = {3 -- 24}, year = {2021}, abstract = {Robotic process automation (RPA) has attracted increasing attention in research and practice. This chapter positions, structures, and frames the topic as an introduction to this book. RPA is understood as a broad concept that comprises a variety of concrete solutions. From a management perspective RPA offers an innovative approach for realizing automation potentials, whereas from a technical perspective the implementation based on software products and the impact of artificial intelligence (AI) and machine learning (ML) are relevant. RPA is industry-independent and can be used, for example, in finance, telecommunications, and the public sector. With respect to RPA this chapter discusses definitions, related approaches, a structuring framework, a research framework, and an inside as well as outside architectural view. Furthermore, it provides an overview of the book combined with short summaries of each chapter.}, language = {en} } @incollection{Fissabre2022, author = {Fissabre, Anke}, title = {Die Bauten des j{\"u}dischen Friedhofs an der L{\"u}tticher Straße}, series = {Der J{\"u}dische Friedhof Aachen}, booktitle = {Der J{\"u}dische Friedhof Aachen}, editor = {Dux, Holger A.}, publisher = {Mayersche Buchhandlung Aachen GmbH}, address = {Aachen}, isbn = {978-3-87519-266-7}, pages = {51 -- 69}, year = {2022}, language = {de} } @incollection{Fissabre2022, author = {Fissabre, Anke}, title = {Ein Entwurf f{\"u}r die Umnutzung der Bauten des j{\"u}dischen Friedhofs an der L{\"u}tticher Straße}, series = {Der j{\"u}dische Friedhof Aachen L{\"u}tticher Straße Aachen}, booktitle = {Der j{\"u}dische Friedhof Aachen L{\"u}tticher Straße Aachen}, editor = {Dux, Holger A.}, publisher = {Mayersche Buchhandlung Aachen GmbH}, address = {Aachen}, isbn = {978-3-87519-266-7}, pages = {71 -- 74}, year = {2022}, language = {de} } @misc{Czarnecki2020, author = {Czarnecki, Christian}, title = {Buchbesprechung : Anwendungsorientierte Wirtschaftsinformatik - Strategische Planung, Entwicklung und Nutzung von Informationssystemen}, series = {Anwendungen und Konzepte der Wirtschaftsinformatik (AKWI-Journal)}, journal = {Anwendungen und Konzepte der Wirtschaftsinformatik (AKWI-Journal)}, publisher = {Technische Hochschule Wildau}, address = {Wildau}, issn = {2296-4592}, doi = {10.26034/lu.akwi.2020.3264}, pages = {101 -- 101}, year = {2020}, language = {de} } @article{BensbergAuthCzarnecki2020, author = {Bensberg, Frank and Auth, Gunnar and Czarnecki, Christian}, title = {Literaturanalyse mit Text Mining}, series = {E-Learning and Education (eleed)}, journal = {E-Learning and Education (eleed)}, number = {13}, editor = {Haake, J{\"o}rg M.}, publisher = {FernUniversit{\"a}t in Hagen}, address = {Hagen}, issn = {1860-7470}, pages = {1 -- 13}, year = {2020}, abstract = {Die Durchf{\"u}hrung einer systematischen Literaturrecherche ist eine zentrale Kompetenz wissenschaftlichen Arbeitens und bildet daher einen festen Ausbildungsbestandteil von Bachelor- und Masterstudieng{\"a}ngen. In entsprechenden Lehrveranstaltungen werden Studierende zwar mit den grundlegenden Hilfsmitteln zur Suche und Verwaltung von Literatur vertraut gemacht, allerdings werden die Potenziale textanalytischer Methoden und Anwendungssysteme (Text Mining, Text Analytics) dabei zumeist nicht abgedeckt. Folglich werden Datenkompetenzen, die zur systemgest{\"u}tzten Analyse und Erschließung von Literaturdaten erforderlich sind, nicht hinreichend ausgepr{\"a}gt. Um diese Kompetenzl{\"u}cke zu adressieren, ist an der Hochschule Osnabr{\"u}ck eine Lehrveranstaltung konzipiert und projektorientiert umgesetzt worden, die sich insbesondere an Studierende wirtschaftswissenschaftlicher Studieng{\"a}nge richtet. Dieser Beitrag dokumentiert die fachliche sowie technische Ausgestaltung dieser Veranstaltung und zeigt Potenziale f{\"u}r die k{\"u}nftige Weiterentwicklung auf.}, language = {de} } @incollection{CzarneckiBensberg2019, author = {Czarnecki, Christian and Bensberg, Frank}, title = {Telekommunikationsunternehmen, Anwendungssysteme f{\"u}r}, series = {Enzyklop{\"a}die der Wirtschaftsinformatik}, booktitle = {Enzyklop{\"a}die der Wirtschaftsinformatik}, publisher = {Gito}, address = {Berlin}, pages = {1 -- 3}, year = {2019}, language = {de} } @incollection{Czarnecki2019, author = {Czarnecki, Christian}, title = {Robotergesteuerte Prozessautomatisierung}, series = {Enzyklop{\"a}die der Wirtschaftsinformatik}, booktitle = {Enzyklop{\"a}die der Wirtschaftsinformatik}, publisher = {Gito}, address = {Berlin}, pages = {1 -- 3}, year = {2019}, language = {de} } @incollection{Fissabre2022, author = {Fissabre, Anke}, title = {kirchen-bauhaus? - Die Kunstgewerbeschule in Aachen unter Rudolf Schwarz}, series = {Zwischen den Zeiten - Besatzung und Aufbruch in Aachen, 1919-1932}, booktitle = {Zwischen den Zeiten - Besatzung und Aufbruch in Aachen, 1919-1932}, editor = {Soldwisch, Ines and Schmitz, Stefan}, publisher = {Aachener Karnevalsverein (AKV)}, address = {Aachen}, isbn = {978-3-9825016-0-4}, pages = {54 -- 65}, year = {2022}, language = {de} } @incollection{BensbergAuthCzarnecki2021, author = {Bensberg, Frank and Auth, Gunnar and Czarnecki, Christian}, title = {Finding the perfect RPA match : a criteria-based selection method for RPA solutions}, series = {Robotic process automation : Management, technology, applications}, booktitle = {Robotic process automation : Management, technology, applications}, editor = {Czarnecki, Christian and Fettke, Peter}, publisher = {De Gruyter}, address = {Oldenbourg}, isbn = {978-3-11-067677-8}, doi = {10.1515/9783110676693-201}, pages = {47 -- 75}, year = {2021}, abstract = {The benefits of robotic process automation (RPA) are highly related to the usage of commercial off-the-shelf (COTS) software products that can be easily implemented and customized by business units. But, how to find the best fitting RPA product for a specific situation that creates the expected benefits? This question is related to the general area of software evaluation and selection. In the face of more than 75 RPA products currently on the market, guidance considering those specifics is required. Therefore, this chapter proposes a criteria-based selection method specifically for RPA. The method includes a quantitative evaluation of costs and benefits as well as a qualitative utility analysis based on functional criteria. By using the visualization of financial implications (VOFI) method, an application-oriented structure is provided that opposes the total cost of ownership to the time savings times salary (TSTS). For the utility analysis a detailed list of functional criteria for RPA is offered. The whole method is based on a multi-vocal review of scientific and non-scholarly literature including publications by business practitioners, consultants, and vendors. The application of the method is illustrated by a concrete RPA example. The illustrated structures, templates, and criteria can be directly utilized by practitioners in their real-life RPA implementations. In addition, a normative decision process for selecting RPA alternatives is proposed before the chapter closes with a discussion and outlook.}, language = {en} } @incollection{CroonCzarnecki2021, author = {Croon, Philipp and Czarnecki, Christian}, title = {Liability for loss or damages caused by RPA}, series = {Robotic process automation : Management, technology, applications}, booktitle = {Robotic process automation : Management, technology, applications}, editor = {Czarnecki, Christian and Fettke, Peter}, publisher = {De Gruyter}, address = {Oldenbourg}, isbn = {9783110676778}, doi = {10.1515/9783110676693-202}, pages = {135 -- 151}, year = {2021}, abstract = {Intelligent autonomous software robots replacing human activities and performing administrative processes are reality in today's corporate world. This includes, for example, decisions about invoice payments, identification of customers for a marketing campaign, and answering customer complaints. What happens if such a software robot causes a damage? Due to the complete absence of human activities, the question is not trivial. It could even happen that no one is liable for a damage towards a third party, which could create an uncalculatable legal risk for business partners. Furthermore, the implementation and operation of those software robots involves various stakeholders, which result in the unsolvable endeavor of identifying the originator of a damage. Overall it is advisable to all involved parties to carefully consider the legal situation. This chapter discusses the liability of software robots from an interdisciplinary perspective. Based on different technical scenarios the legal aspects of liability are discussed.}, language = {en} } @incollection{SchneiderWisselinkNoelleetal.2021, author = {Schneider, Dominik and Wisselink, Frank and N{\"o}lle, Nikolai and Czarnecki, Christian}, title = {Einfluss von K{\"u}nstlicher Intelligenz auf Customer Journeys am Beispiel von intelligentem Parken}, series = {K{\"u}nstliche Intelligenz in der Anwendung : Rechtliche Aspekte, Anwendungspotenziale und Einsatzszenarien}, booktitle = {K{\"u}nstliche Intelligenz in der Anwendung : Rechtliche Aspekte, Anwendungspotenziale und Einsatzszenarien}, editor = {Barton, Thomas and M{\"u}ller, Christian}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-30935-0 (Print)}, doi = {10.1007/978-3-658-30936-7_7}, pages = {99 -- 122}, year = {2021}, abstract = {Im Konsumentenmarkt entstehen vermehrt neue Anwendungen von K{\"u}nstlicher Intelligenz (KI). Zunehmend dr{\"a}ngen auch Ger{\"a}te und Dienste in den Markt, die eigenst{\"a}ndig {\"u}ber das Internet kommunizieren. Dadurch k{\"o}nnen diese Ger{\"a}te und Dienste mit neuartigen KI-basierten Diensten verbessert werden. Solche Dienste k{\"o}nnen die Art und Weise beeinflussen, wie Kunden kommerzielle Entscheidungen treffen und somit das Kundenerlebnis maßgeblich ver{\"a}ndern. Der Einfluss von KI auf kommerzielle Interaktionen wurde bisher noch nicht umfassend untersucht. Basierend auf einem Framework, welches einen ersten {\"U}berblick {\"u}ber die Effekte von KI auf kommerzielle Interaktionen gibt, wird in diesem Kapitel der Einfluss von KI auf Customer Journeys am konkreten Anwendungsfall des intelligenten Parkens analysiert. Die daraus gewonnenen Erkenntnisse k{\"o}nnen in der Praxis als Grundlage genutzt werden, um das Potenzial von KI zu verstehen und bei der Gestaltung eigener Customer Journeys umzusetzen.}, language = {de} } @incollection{SchneiderWisselinkNoelleetal.2020, author = {Schneider, Dominik and Wisselink, Frank and N{\"o}lle, Nikolai and Czarnecki, Christian}, title = {Influence of artificial intelligence on commercial interactions in the consumer market}, series = {Automatisierung und Personalisierung von Dienstleistungen : Methoden - Potenziale - Einsatzfelder}, booktitle = {Automatisierung und Personalisierung von Dienstleistungen : Methoden - Potenziale - Einsatzfelder}, editor = {Bruhn, Manfred and Hadwich, Karsten}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-30167-5 (Print)}, doi = {10.1007/978-3-658-30168-2_7}, pages = {183 -- 205}, year = {2020}, abstract = {Recently, novel AI-based services have emerged in the consumer market. AI-based services can affect the way consumers take commercial decisions. Research on the influence of AI on commercial interactions is in its infancy. In this chapter, a framework creating a first overview of the influence of AI on commercial interactions is introduced. This framework summarizes the findings of comparing numerous customer journeys of novel AI-based services with corresponding non-AI equivalents.}, language = {en} } @incollection{AuthCzarneckiBensbergetal.2019, author = {Auth, Gunnar and Czarnecki, Christian and Bensberg, Frank and Thor, Andreas}, title = {Digitalisierung des Forschungsprozesses aus Sicht von Forschenden - durch Serviceintegration zum pers{\"o}nlichen Forschungsinformationssystem}, series = {Hochschulen in Zeiten der Digitalisierung : Lehre, Forschung und Organisation}, booktitle = {Hochschulen in Zeiten der Digitalisierung : Lehre, Forschung und Organisation}, editor = {Barton, Thomas and M{\"u}ller, Christian and Seel, Christian}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-26617-2 (Print)}, doi = {10.1007/978-3-658-26618-9_17}, pages = {287 -- 307}, year = {2019}, abstract = {In der Diskussion {\"u}ber die Digitalisierung der Forschung spielt die Frage nach der optimalen IT-Unterst{\"u}tzung f{\"u}r Forschende eine wichtige Rolle. Forschende k{\"o}nnen heute an ihren Hochschulen bzw. Wissenschaftseinrichtungen auf ein breites Angebot interner IT-Dienstleistungen zur{\"u}ckgreifen, das auch kooperative IT-Dienste umfasst, die von mehreren Institutionen in Zusammenarbeit bereitgestellt werden. Außerhalb der eigenen Organisation und des weiteren Verbunds hat sich im Internet zudem ein breites externes Angebot an innovativen, h{\"a}ufig kostenlos nutzbaren Onlinediensten entwickelt. Neben horizontalen Onlinediensten, die sich prinzipiell an jeden Internetnutzer richten (bspw. Dropbox, Twitter, WhatsApp), nimmt auch die Zahl von vertikalen Diensten f{\"u}r wissenschaftliche bzw. Forschungszwecke immer weiter zu (bspw. GoogleScholar, ResearchGate, figshare). F{\"u}r Forschende er{\"o}ffnen sich damit vielf{\"a}ltige neue M{\"o}glichkeiten, ihren individuellen Forschungsprozess durch digitale Werkzeuge zu verbessern. Aufgrund rechtlicher, technischer und personeller Restriktionen k{\"o}nnen jedoch interne Dienstleister bei der Identifizierung, Auswahl und Nutzung externer Onlinedienste nur wenig Unterst{\"u}tzung leisten. Aus einer serviceorientierten Perspektive stehen Forschende zunehmend vor dem Problem, wie sich heterogene IT-Dienste interner und externer Anbieter in den eigenen Forschungsprozess integrieren lassen. Als L{\"o}sungsansatz skizziert das Kapitel das Konzept eines pers{\"o}nlichen Forschungsinformationssystems nach Gesichtspunkten eines digitalen Servicesystems.}, language = {de} } @inproceedings{FiedlerGottschlichMuellerMelcher2021, author = {Fiedler, Gerda and Gottschlich-M{\"u}ller, Birgit and Melcher, Karin}, title = {Online-Pr{\"u}fungen mit STACK Aufgaben}, series = {Tagungsband ASIM Workshop STS/GMMS/EDU 2021}, booktitle = {Tagungsband ASIM Workshop STS/GMMS/EDU 2021}, editor = {Liu-Henke, Xiaobo and Durak, Umut}, publisher = {ARGESIM Verlag}, address = {Wien}, isbn = {978-3-901608-69-8}, doi = {10.11128/arep.45}, pages = {173 -- 178}, year = {2021}, abstract = {Wir stellen hier exemplarisch STACK Aufgaben vor, die frei von der Problematik sind, welche sich durch diverse Kommunikationswege und (webbasierte) Computer Algebra Systeme (CAS) ergibt. Daher sind sie insbesondere f{\"u}r eine Open-Book Online Pr{\"u}fung geeignet, da eine faire Pr{\"u}fungssituation gew{\"a}hrleistet werden kann.}, language = {de} } @incollection{BensbergBuscherCzarnecki2019, author = {Bensberg, Frank and Buscher, Gandalf and Czarnecki, Christian}, title = {Digital transformation and IT topics in the consulting industry: a labor market perspective}, series = {Advances in consulting research : recent findings and practical cases}, booktitle = {Advances in consulting research : recent findings and practical cases}, editor = {Nissen, Volker}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-95998-6}, doi = {10.1007/978-3-319-95999-3_16}, pages = {341 -- 357}, year = {2019}, abstract = {Information technologies, such as big data analytics, cloud computing, cyber physical systems, robotic process automation, and the internet of things, provide a sustainable impetus for the structural development of business sectors as well as the digitalization of markets, enterprises, and processes. Within the consulting industry, the proliferation of these technologies opened up the new segment of digital transformation, which focuses on setting up, controlling, and implementing projects for enterprises from a broad range of sectors. These recent developments raise the question, which requirements evolve for IT consultants as important success factors of those digital transformation projects. Therefore, this empirical contribution provides indications regarding the qualifications and competences necessary for IT consultants in the era of digital transformation from a labor market perspective. On the one hand, this knowledge base is interesting for the academic education of consultants, since it supports a market-oriented design of adequate training measures. On the other hand, insights into the competence requirements for consultants are considered relevant for skill and talent management processes in consulting practice. Assuming that consulting companies pursue a strategic human resource management approach, labor market information may also be useful to discover strategic behavioral patterns.}, language = {en} } @incollection{SchmitzDietzeCzarnecki2019, author = {Schmitz, Manfred and Dietze, Christian and Czarnecki, Christian}, title = {Enabling digital transformation through robotic process automation at Deutsche Telekom}, series = {Enabling digital transformation through robotic process automation at Deutsche Telekom}, booktitle = {Enabling digital transformation through robotic process automation at Deutsche Telekom}, editor = {Urbach, Nils and R{\"o}glinger, Maximilian}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-95272-7}, doi = {10.1007/978-3-319-95273-4_2}, pages = {15 -- 33}, year = {2019}, abstract = {Due to the high number of customer contacts, fault clearances, installations, and product provisioning per year, the automation level of operational processes has a significant impact on financial results, quality, and customer experience. Therefore, the telecommunications operator Deutsche Telekom (DT) has defined a digital strategy with the objectives of zero complexity and zero complaint, one touch, agility in service, and disruptive thinking. In this context, Robotic Process Automation (RPA) was identified as an enabling technology to formulate and realize DT's digital strategy through automation of rule-based, routine, and predictable tasks in combination with structured and stable data.}, language = {en} } @book{CzarneckiDietze2017, author = {Czarnecki, Christian and Dietze, Christian}, title = {Reference architecture for the telecommunications industry: Transformation of strategy, organization, processes, data, and applications}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-46755-9 (Print)}, doi = {10.1007/978-3-319-46757-3}, pages = {XXII, 253 Seiten}, year = {2017}, abstract = {This book reflects the tremendous changes in the telecommunications industry in the course of the past few decades - shorter innovation cycles, stiffer competition and new communication products. It analyzes the transformation of processes, applications and network technologies that are now expected to take place under enormous time pressure. The International Telecommunication Union (ITU) and the TM Forum have provided reference solutions that are broadly recognized and used throughout the value chain of the telecommunications industry, and which can be considered the de facto standard. The book describes how these reference solutions can be used in a practical context: it presents the latest insights into their development, highlights lessons learned from numerous international projects and combines them with well-founded research results in enterprise architecture management and reference modeling. The complete architectural transformation is explained, from the planning and set-up stage to the implementation. Featuring a wealth of examples and illustrations, the book offers a valuable resource for telecommunication professionals, enterprise architects and project managers alike.}, language = {en} } @phdthesis{Czarnecki2013, author = {Czarnecki, Christian}, title = {Entwicklung einer referenzmodellbasierten Unternehmensarchitektur f{\"u}r die Telekommunikationsindustrie}, publisher = {Logos}, address = {Berlin}, isbn = {9783832535100}, pages = {230 Seiten}, year = {2013}, abstract = {Die Telekommunikationsindustrie hat in den letzten Jahrzehnten einen enormen Wandel vollzogen. F{\"u}r Telekommunikationsunternehmen erfordert dies fundamentale Umstrukturierungen von Strategie, Prozessen, Anwendungssystemen und Netzwerktechnologien. Dabei spielen Unternehmensarchitekturen und Referenzmodelle eine wichtige Rolle. Zwar existieren in der Praxis anerkannte Referenzmodelle, aber wie sind diese f{\"u}r eine systematische Transformation zu gestalten? Wie sieht eine konkrete L{\"o}sung f{\"u}r die Telekommunikationsindustrie aus? Als Antwort stellt Christian Czarnecki in seinem Buch eine referenzmodellbasierte Unternehmensarchitektur vor. Basierend auf einer umfangreichen Untersuchung von Transformationsprojekten werden Probleme und Anforderungen der Praxis identifiziert, f{\"u}r die mit Methoden der Unternehmenstransformation, Referenzmodellierung und Unternehmensarchitektur ein L{\"o}sungsvorschlag entwickelt und evaluiert wird. Dieser besteht u. a. aus detaillierten Anwendungsf{\"a}llen, Referenzprozessabl{\"a}ufen, einer Zuordnung von Prozessen zu Anwendungssystemen sowie Handlungsempfehlungen zur Virtualisierung. F{\"u}r Wissenschaftler und Studierende der Wirtschaftsinformatik zeigt das Buch neue Erkenntnisse einer anwendungsorientierten Referenzmodellierung. F{\"u}r Praktiker liefert es eine methodisch fundierte L{\"o}sung f{\"u}r die aktuellen Transformationsbedarfe der Telekommunikationsindustrie. Christian Czarnecki arbeitet seit 2004 als Unternehmensberater und hat viele Telekommunikationsunternehmen bei deren Transformation begleitet. In 2013 erfolgte die Promotion zum Doktoringenieur an der Otto-von-Guericke-Universit{\"a}t Magdeburg.}, language = {de} } @article{HahnHebelManz2022, author = {Hahn, Geogr W. and Hebel, Christoph and Manz, W.}, title = {Die neuen Empfehlungen f{\"u}r Verkehrsnachfragemodellierung im Personenverkehr}, series = {Straßenverkehrstechnik}, volume = {66}, journal = {Straßenverkehrstechnik}, number = {10}, publisher = {Kirschbaum Verlag GmbH}, address = {Bonn}, issn = {0039-2219}, doi = {10.53184/SVT10-2022-1}, pages = {721 -- 726}, year = {2022}, abstract = {Die neu erschienenen „Empfehlungen zum Einsatz von Verkehrsnachfragemodellen f{\"u}r den Personenverkehr" liefern erstmals als Empfehlungspapier der Forschungsgesellschaft f{\"u}r Straßen- und Verkehrswesen einen umfassenden {\"U}berblick zu den verschiedenen Aspekten der Modellierung und geben dem Fachplaner konkrete Hilfestellung f{\"u}r die Konzeption von Nachfragemodellen. Das Empfehlungspapier zielt unter anderem darauf ab, die Erwartungen und das Anspruchsniveau in Hinblick auf Sachgerechtigkeit der Modelle, die erzielbare Modellqualit{\"a}t und den Detaillierungsgrad der Modellaussagen zu harmonisieren.}, language = {de} } @article{EmigHebelSchwark2022, author = {Emig, J. and Hebel, Christoph and Schwark, A.}, title = {Einsatzbereiche f{\"u}r Verkehrsnachfragemodelle}, series = {Straßenverkehrstechnik}, volume = {66}, journal = {Straßenverkehrstechnik}, number = {10}, publisher = {Kirschbaum Verlag GmbH}, address = {Bonn}, issn = {0039-2219}, doi = {10.53184/SVT10-2022-2}, pages = {727 -- 736}, year = {2022}, abstract = {In der Praxis bestehen vielf{\"a}ltige Einsatzbereiche f{\"u}r Verkehrsnachfragemodelle. Mit ihnen k{\"o}nnen Kenngr{\"o}ßen des Verkehrsangebots und der Verkehrsnachfrage f{\"u}r den heutigen Zustand wie auch f{\"u}r zuk{\"u}nftige Zust{\"a}nde bereitgestellt werden, um so die Grundlagen f{\"u}r verkehrsplanerische Entscheidungen zu liefern. Die neuen „Empfehlungen zum Einsatz von Verkehrsnachfragemodellen f{\"u}r den Personenverkehr" (EVNM-PV) (FGSV 2022) veranschaulichen anhand von typischen Planungsaufgaben, welche differenzierten Anforderungen daraus f{\"u}r die Modellkonzeption und -erstellung resultieren. Vor dem Hintergrund der konkreten Aufgabenstellung sowie deren spezifischer planerischer Anforderungen bildet die abzuleitende Modellspezifikation die verabredete Grundlage zwischen Auftraggeber und Modellersteller f{\"u}r die konkrete inhaltliche, fachliche Ausgestaltung des Verkehrsmodells.}, language = {de} } @article{KindmannKrausLaumannetal.2022, author = {Kindmann, Rolf and Kraus, Matthias and Laumann, J{\"o}rg and Vette, Jan}, title = {Verallgemeinerte Berechnungsmethode f{\"u}r in Beton eingespannte Stahlprofile - Einspanntiefen, Tragf{\"a}higkeitsnachweise und Bemessungshilfen}, series = {Stahlbau}, volume = {93}, journal = {Stahlbau}, number = {Early View}, publisher = {Ernst \& Sohn GmbH}, address = {Berlin}, issn = {1437-1049}, doi = {10.1002/stab.202200024}, pages = {1 -- 25}, year = {2022}, abstract = {St{\"u}tzen und Tr{\"a}ger aus Stahlprofilen k{\"o}nnen in Fundamente oder W{\"a}nde aus Stahlbeton einbetoniert werden. Diese Anschl{\"u}sse wirken in der Regel wie Einspannungen, die eine ausreichende Einspanntiefe erfordern. Im Folgenden wird eine verallgemeinerte Berechnungsmethode f{\"u}r in Stahlbetonkonstruktionen eingespannte Stahlprofile aus gewalzten I-Profilen, geschweißten I-Profilen, runden Hohlprofilen, eckigen Hohlprofilen und einzelligen Kastenquerschnitten vorgestellt. F{\"u}r Beanspruchungen infolge einachsiger Biegung um die starke und schwache Profilachse werden der profilabh{\"a}ngige Ansatz der Betondruckspannungen im Einspannbereich und die Ermittlung der Einspanntiefe behandelt. Unter Ber{\"u}cksichtigung der Normalkraft werden an den maßgebenden Stellen Tragf{\"a}higkeitsnachweise f{\"u}r die Stahlprofile gef{\"u}hrt. Als Erg{\"a}nzung zu den Berechnungsformeln werden Bemessungshilfen zur Verf{\"u}gung gestellt, die die Wahl der mitwirkenden Breiten und der Einspanntiefen erleichtert.}, language = {de} } @book{LaumannFeldmannFrickeletal.2022, author = {Laumann, J{\"o}rg and Feldmann, Markus and Frickel, J{\"o}rg and Krahwinkel, Manuel and Kraus, Matthias and Strangh{\"o}ner, Natalie and Ummenhofer, Thomas}, title = {Petersen Stahlbau : Grundlagen der Berechnung und baulichen Ausbildung von Stahlbauten}, edition = {5. Auflage}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-20510-2}, doi = {10.1007/978-3-658-20510-2}, pages = {XXIII, 1919 Seiten}, year = {2022}, abstract = {Die Theorie und Konstruktion der wichtigsten Bereiche der Stahlbautechnik werden von den Grundlagen her entwickelt und durch viele Beispiele praxisbezogen erl{\"a}utert. Das Buch ist aus Vorlesungen im Grund- und Vertiefungsstudium des Bauingenieurwesens entstanden. Der Inhalt wird zum Teil systematisch, zum Teil exemplarisch dargestellt. F{\"u}r Konstrukteure und Statiker in den technischen B{\"u}ros, der Beratenden Ingenieure und der Pr{\"u}f{\"a}mter enth{\"a}lt das Buch aufbereitete Berechnungsverfahren und Konstruktionsvorschl{\"a}ge in großer Zahl.}, language = {de} } @techreport{GeisslerProkopBubneretal.2015, author = {Geißler, Karsten and Prokop, Ines and Bubner, Andr{\´e} and Egner, Ralf and Heyde, Stefan and Kempkes, Marian and K{\"u}hn, Bertram and Laumann, J{\"o}rg and Lieberwirth, Peter and Naumes, Johannes and Ruga, Julija and Schilling, Sivo and Schmidt, Herbert and Ummenhofer, Thomas}, title = {Verbesserung der Praxistauglichkeit der Baunormen durch pr{\"a}normative Arbeit - Teilantrag 3: Stahlbau, Abschlussbericht}, publisher = {Fraunhofer IRB Verlag}, address = {Stuttgart}, isbn = {978-3-8167-9539-1}, pages = {130 Seiten}, year = {2015}, language = {de} } @article{HoerenbaumLaumannProkop2016, author = {H{\"o}renbaum, Christoph and Laumann, J{\"o}rg and Prokop, Ines}, title = {Zur Anwendung des Eurocode 3 Teil 1-2 f{\"u}r die Heißbemessung und Anregungen f{\"u}r dessen Novellierung}, series = {Stahlbau}, volume = {85}, journal = {Stahlbau}, number = {6}, publisher = {Ernst \& Sohn GmbH}, address = {Berlin}, issn = {1437-1049}, doi = {10.1002/stab.201610382}, pages = {429 -- 434}, year = {2016}, abstract = {Die Eurocodes werden bis zum Jahr 2020 im Europ{\"a}ischen Komitee f{\"u}r Normung (CEN), Technisches Komitee TC 250, {\"u}berarbeitet. In Vorbereitung auf die Eurocode-Novellierung haben engagierte Ingenieure im Rahmen der Initiative PraxisRegeln Bau (PRB) die f{\"u}r die praktische Anwendung h{\"a}ufig genutzten Teile des Eurocode 3 untersucht. Mit dem Ziel, die Praxistauglichkeit des Eurocode 3 f{\"u}r die Heißbemessung zu verbessern, wurden die bestehende Norm EN 1993 Teil 1-2 insbesondere in Bezug auf die Anwenderfreundlichkeit analysiert und Vorschl{\"a}ge f{\"u}r die europ{\"a}ische Novellierung erarbeitet. Die Analysen zeigen, dass durch Umstrukturierungen und durch die Einf{\"u}hrung von Tabellen die Verst{\"a}ndlichkeit und Anwenderfreundlichkeit der Regeln f{\"u}r die Heißbemessung bedeutend erh{\"o}ht werden k{\"o}nnen.}, language = {de} } @incollection{BensbergCzarneckiGrob2022, author = {Bensberg, Frank and Czarnecki, Christian and Grob, Heinz Lothar}, title = {Wirtschaftlichkeitsbewertung von Smart Services mit vollst{\"a}ndigen Finanzpl{\"a}nen}, series = {Smart Services: Band 1: Konzepte - Methoden - Prozesse}, booktitle = {Smart Services: Band 1: Konzepte - Methoden - Prozesse}, editor = {Bruhn, Manfred and Hadwich, Karsten}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-37344-3 (Online)}, doi = {10.1007/978-3-658-37344-3_6}, pages = {225 -- 251}, year = {2022}, abstract = {Dieser Beitrag stellt einen Bewertungsrahmen f{\"u}r Smart Services vor, der auf dem Konzept vollst{\"a}ndiger Finanzpl{\"a}ne (VOFI) basiert. Zun{\"a}chst wird eine IoT-Architektur f{\"u}r Smart Services eingef{\"u}hrt, die die Grundlage f{\"u}r deren Betrachtung aus Sicht der Unternehmensplanung liefert. Hierauf aufbauend wird ein Bewertungsrahmen f{\"u}r die finanzplanorientierte Wirtschaftlichkeitsbewertung von Smart Services geschaffen, mit dem die relevanten Zahlungsfolgen differenziert erfasst werden. Mithilfe des entwickelten VOFI-Systems wird anschließend aufgezeigt, wie mithilfe einer Risikoanalyse die Unsicherheit von Modellparametern ber{\"u}cksichtigt werden kann.}, language = {de} } @article{Czarnecki2015, author = {Czarnecki, Christian}, title = {Moderne Telekommunikationsprodukte erfordern standardisierte Gesch{\"a}ftsprozesse}, series = {Wirtschaft und Wissenschaft}, journal = {Wirtschaft und Wissenschaft}, number = {2}, publisher = {Deutsche Telekom AG. Fachhochschule Leipzig}, address = {Leipzig}, pages = {7 -- 7}, year = {2015}, language = {de} } @article{BaringhausGaigall2022, author = {Baringhaus, Ludwig and Gaigall, Daniel}, title = {A goodness-of-fit test for the compound Poisson exponential model}, series = {Journal of Multivariate Analysis}, volume = {195}, journal = {Journal of Multivariate Analysis}, number = {Article 105154}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0047-259X}, doi = {10.1016/j.jmva.2022.105154}, year = {2022}, abstract = {On the basis of bivariate data, assumed to be observations of independent copies of a random vector (S,N), we consider testing the hypothesis that the distribution of (S,N) belongs to the parametric class of distributions that arise with the compound Poisson exponential model. Typically, this model is used in stochastic hydrology, with N as the number of raindays, and S as total rainfall amount during a certain time period, or in actuarial science, with N as the number of losses, and S as total loss expenditure during a certain time period. The compound Poisson exponential model is characterized in the way that a specific transform associated with the distribution of (S,N) satisfies a certain differential equation. Mimicking the function part of this equation by substituting the empirical counterparts of the transform we obtain an expression the weighted integral of the square of which is used as test statistic. We deal with two variants of the latter, one of which being invariant under scale transformations of the S-part by fixed positive constants. Critical values are obtained by using a parametric bootstrap procedure. The asymptotic behavior of the tests is discussed. A simulation study demonstrates the performance of the tests in the finite sample case. The procedure is applied to rainfall data and to an actuarial dataset. A multivariate extension is also discussed.}, language = {en} } @inproceedings{EvansBraunUlmeretal.2022, author = {Evans, Benjamin and Braun, Sebastian and Ulmer, Jessica and Wollert, J{\"o}rg}, title = {AAS implementations - current problems and solutions}, series = {20th International Conference on Mechatronics - Mechatronika (ME)}, booktitle = {20th International Conference on Mechatronics - Mechatronika (ME)}, publisher = {IEEE}, address = {New York, NY}, isbn = {978-1-6654-1040-3}, doi = {10.1109/ME54704.2022.9982933}, pages = {6 Seiten}, year = {2022}, abstract = {The fourth industrial revolution presents a multitude of challenges for industries, one of which being the increased flexibility required of manufacturing lines as a result of increased consumer demand for individualised products. One solution to tackle this challenge is the digital twin, more specifically the standardised model of a digital twin also known as the asset administration shell. The standardisation of an industry wide communications tool is a critical step in enabling inter-company operations. This paper discusses the current state of asset administration shells, the frameworks used to host them and their problems that need to be addressed. To tackle these issues, we propose an event-based server capable of drastically reducing response times between assets and asset administration shells and a multi-agent system used for the orchestration and deployment of the shells in the field.}, language = {en} } @incollection{Czarnecki2018, author = {Czarnecki, Christian}, title = {Establishment of a central process governance organization combined with operational process improvements : Insights from a BPM Project at a leading telecommunications operator in the Middle East}, series = {Business process management cases : digital innovation and business transformation in practice}, booktitle = {Business process management cases : digital innovation and business transformation in practice}, editor = {vom Brocke, Jan and Mendling, Jan}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-58306-8}, doi = {10.1007/978-3-319-58307-5}, pages = {57 -- 76}, year = {2018}, abstract = {Because of customer churn, strong competition, and operational inefficiencies, the telecommunications operator ME Telco (fictitious name due to confidentiality) launched a strategic transformation program that included a Business Process Management (BPM) project. Major problems were silo-oriented process management and missing cross-functional transparency. Process improvements were not consistently planned and aligned with corporate targets. Measurable inefficiencies were observed on an operational level, e.g., high lead times and reassignment rates of the incident management process.}, language = {en} } @article{KosterScheidweilerTieves2016, author = {Koster, Arie and Scheidweiler, Robert and Tieves, Martin}, title = {A flow based pruning scheme for enumerative equitable coloring algorithms}, series = {A flow based pruning scheme for enumerative equitable coloring algorithms}, journal = {A flow based pruning scheme for enumerative equitable coloring algorithms}, doi = {10.48550/arXiv.1607.08754}, pages = {1 -- 30}, year = {2016}, abstract = {An equitable graph coloring is a proper vertex coloring of a graph G where the sizes of the color classes differ by at most one. The equitable chromatic number is the smallest number k such that G admits such equitable k-coloring. We focus on enumerative algorithms for the computation of the equitable coloring number and propose a general scheme to derive pruning rules for them: We show how the extendability of a partial coloring into an equitable coloring can be modeled via network flows. Thus, we obtain pruning rules which can be checked via flow algorithms. Computational experiments show that the search tree of enumerative algorithms can be significantly reduced in size by these rules and, in most instances, such naive approach even yields a faster algorithm. Moreover, the stability, i.e., the number of solved instances within a given time limit, is greatly improved. Since the execution of flow algorithms at each node of a search tree is time consuming, we derive arithmetic pruning rules (generalized Hall-conditions) from the network model. Adding these rules to an enumerative algorithm yields an even larger runtime improvement.}, language = {en} } @article{BeckenbachScheidweiler2016, author = {Beckenbach, Isabel and Scheidweiler, Robert}, title = {Perfect ƒ-Matchings and ƒ-Factors in Hypergraphs - A Combinatorial Approach}, series = {Discrete Mathematics}, volume = {240}, journal = {Discrete Mathematics}, number = {10}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2192-7782}, doi = {10.1016/j.disc.2017.05.005}, pages = {2499 -- 2506}, year = {2016}, abstract = {We prove characterizations of the existence of perfect ƒ-matchings in uniform mengerian and perfect hypergraphs. Moreover, we investigate the ƒ-factor problem in balanced hypergraphs. For uniform balanced hypergraphs we prove two existence theorems with purely combinatorial arguments, whereas for non-uniform balanced hypergraphs we show that the ƒ-factor problem is NP-hard.}, language = {en} } @article{ScheidweilerTriesch2016, author = {Scheidweiler, Robert and Triesch, Eberhard}, title = {A note on the duality between matchings and vertex covers in balanced hypergraphs}, series = {Journal of Combinatorial Optimization}, volume = {32}, journal = {Journal of Combinatorial Optimization}, number = {2}, publisher = {Springer}, address = {Berlin}, issn = {1573-2886}, doi = {10.1007/s10878-015-9887-5}, pages = {639 -- 644}, year = {2016}, abstract = {We present a new Min-Max theorem for an optimization problem closely connected to matchings and vertex covers in balanced hypergraphs. The result generalizes Kőnig's Theorem (Berge and Las Vergnas in Ann N Y Acad Sci 175:32-40, 1970; Fulkerson et al. in Math Progr Study 1:120-132, 1974) and Hall's Theorem (Conforti et al. in Combinatorica 16:325-329, 1996) for balanced hypergraphs.}, language = {en} } @article{NiedermeyerZhouDursunetal.2016, author = {Niedermeyer, Angela and Zhou, Bei and Dursun, G{\"o}zde and Temiz Artmann, Ayseg{\"u}l and Markert, Bernd}, title = {An examination of tissue engineered scaffolds in a bioreactor}, series = {Proceedings in Applied Mathematics and Mechanics PAMM}, volume = {16}, journal = {Proceedings in Applied Mathematics and Mechanics PAMM}, number = {1}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1617-7061}, doi = {10.1002/pamm.201610038}, pages = {99 -- 100}, year = {2016}, abstract = {Replacement tissues, designed to fill in articular cartilage defects, should exhibit the same properties as the native material. The aim of this study is to foster the understanding of, firstly, the mechanical behavior of the material itself and, secondly, the influence of cultivation parameters on cell seeded implants as well as on cell migration into acellular implants. In this study, acellular cartilage replacement material is theoretically, numerically and experimentally investigated regarding its viscoelastic properties, where a phenomenological model for practical applications is developed. Furthermore, remodeling and cell migration are investigated.}, language = {en} } @article{KilicRaatschenKoerfgenetal.2017, author = {Kilic, S. A. and Raatschen, Hans-J{\"u}rgen and K{\"o}rfgen, B. and Apaydin, N. M. and Astaneh-Asl, A.}, title = {FE Model of the Fatih Sultan Mehmet Suspension Bridge Using Thin Shell Finite Elements}, series = {Arabian Journal for Science and Engineering}, volume = {42}, journal = {Arabian Journal for Science and Engineering}, number = {3}, publisher = {Springer Nature}, issn = {2191-4281}, doi = {10.1007/s13369-016-2316-y}, pages = {1103 -- 1116}, year = {2017}, abstract = {This paper presents the results of an eigenvalue analysis of the Fatih Sultan Mehmet Bridge. A high-resolution finite element model was created directly from the available design documents. All physical properties of the structural components were included in detail, so no calibration to the measured data was necessary. The deck and towers were modeled with shell elements. A nonlinear static analysis was performed before the eigenvalue calculation. The calculated natural frequencies and corresponding mode shapes showed good agreement with the available measured ambient vibration data. The calculation of the effective modal mass showed that nine modes had single contributions higher than 5 \% of the total mass. They were in a frequency range up to 1.2 Hz. The comparison of the results for the torsional modes especially demonstrated the advantage of using thin shell finite elements over the beam modeling approach.}, language = {en} } @article{DantismTakenagaWagneretal.2017, author = {Dantism, Shahriar and Takenaga, Shoko and Wagner, Torsten and Wagner, Patrick and Sch{\"o}ning, Michael Josef}, title = {Differential imaging of the metabolism of bacteria and eukaryotic cells based on light-addressable potentiometric sensors}, series = {Electrochimica Acta}, volume = {246}, journal = {Electrochimica Acta}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0013-4686}, doi = {10.1016/j.electacta.2017.05.196}, pages = {234 -- 241}, year = {2017}, abstract = {A light-addressable potentiometric sensor (LAPS) is a field-effect-based potentiometric sensor with an electrolyte/insulator/semiconductor (EIS) structure, which is able to monitor analyte concentrations of (bio-)chemical species in aqueous solutions in a spatially resolved way. Therefore, it is also an appropriate tool to record 2D-chemical images of concentration variations on the sensor surface. In the present work, two differential, LAPS-based measurement principles are introduced to determine the metabolic activity of Escherichia coli (E. coli) K12 and Chinese hamster ovary (CHO) cells as test microorganisms. Hereby, we focus on i) the determination of the extracellular acidification rate (ΔpH/min) after adding glucose solutions to the cell suspensions; and ii) recording the amplitude increase of the photocurrent (Iph) related to the produced acids from E. coli K12 bacteria and CHO cells on the sensor surface by 2D-chemical imaging. For this purpose, 3D-printed multi-chamber structures were developed and mounted on the planar sensor-chip surface to define four independent compartments, enabling differential measurements with varying cell concentrations. The differential concept allows eliminating unwanted drift effects and, with the four-chamber structures, measurements on the different cell concentrations were performed simultaneously, thus reducing also the overall measuring time.}, language = {en} } @article{JildehKirchnerOberlaenderetal.2017, author = {Jildeh, Zaid B. and Kirchner, Patrick and Oberl{\"a}nder, Jan and Kremers, Alexander and Wagner, Torsten and Wagner, Patrick H. and Sch{\"o}ning, Michael Josef}, title = {FEM-based modeling of a calorimetric gas sensor for hydrogen peroxide monitoring}, series = {physica status solidi a : applications and materials sciences}, journal = {physica status solidi a : applications and materials sciences}, number = {Early View}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1862-6319}, doi = {10.1002/pssa.201600912}, year = {2017}, abstract = {A physically coupled finite element method (FEM) model is developed to study the response behavior of a calorimetric gas sensor. The modeled sensor serves as a monitoring device of the concentration of gaseous hydrogen peroxide (H2 O2) in a high temperature mixture stream in aseptic sterilization processes. The principle of operation of a calorimetric H2 O2 sensor is analyzed and the results of the numerical model have been validated by using previously published sensor experiments. The deviation in the results between the FEM model and experimental data are presented and discussed.}, language = {en} } @article{ArreolaKeusgenSchoening2017, author = {Arreola, Julio and Keusgen, Michael and Sch{\"o}ning, Michael Josef}, title = {Effect of O2 plasma on properties of electrolyte-insulator-semiconductor structures}, series = {physica status solidi a : applications and materials sciences}, volume = {214}, journal = {physica status solidi a : applications and materials sciences}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1862-6319}, doi = {10.1002/pssa.201700025}, pages = {Artikel 1700025}, year = {2017}, abstract = {Prior to immobilization of biomolecules or cells onto biosensor surfaces, the surface must be physically or chemically activated for further functionalization. Organosilanes are a versatile option as they facilitate the immobilization through their terminal groups and also display self-assembly. Incorporating hydroxyl groups is one of the important methods for primary immobilization. This can be done, for example, with oxygen plasma treatment. However, this treatment can affect the performance of the biosensors and this effect is not quite well understood for surface functionalization. In this work, the effect of O2 plasma treatment on EIS sensors was investigated by means of electrochemical characterizations: capacitance-voltage (C-V) and constant capacitance (ConCap) measurements. After O2 plasma treatment, the potential of the EIS sensor dramatically shifts to a more negative value. This was successfully reset by using an annealing process.}, language = {en} } @article{MiyamotoHayashiSakamotoetal.2017, author = {Miyamoto, Ko-ichiro and Hayashi, Kosuke and Sakamoto, Azuma and Werner, Frederik and Wagner, Torsten and Sch{\"o}ning, Michael Josef and Yoshinobu, Tatsuo}, title = {A high-Q resonance-mode measurement of EIS capacitive sensor by elimination of series resistance}, series = {Sensor and Actuators B: Chemical}, volume = {248}, journal = {Sensor and Actuators B: Chemical}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0925-4005}, doi = {10.1016/j.snb.2017.03.002}, pages = {1006 -- 1010}, year = {2017}, abstract = {An EIS capacitive sensor is a semiconductor-based potentiometric sensor, which is sensitive to the ion concentration or pH value of the solution in contact with the sensing surface. To detect a small change in the ion concentration or pH, a small capacitance change must be detected. Recently, a resonance-mode measurement was proposed, in which an inductor was connected to the EIS capacitive sensor and the resonant frequency was correlated with the pH value. In this study, the Q factor of the resonant circuit was enhanced by canceling the internal resistance of the reference electrode and the internal resistance of the inductor coil with the help of a bypass capacitor and a negative impedance converter, respectively. 1\% variation of the signal in the developed system corresponded to a pH change of 3.93 mpH, which was about 1/12 of the conventional method, suggesting a better performance in detection of a small pH change.}, language = {en} } @article{WernerMiyamotoWagneretal.2017, author = {Werner, Frederik and Miyamoto, Ko-ichiro and Wagner, Torsten and Sch{\"o}ning, Michael Josef and Yoshinobu, Tatsuo}, title = {Lateral resolution enhancement of pulse-driven light-addressable potentiometric sensor}, series = {Sensor and Actuators B: Chemical}, volume = {248}, journal = {Sensor and Actuators B: Chemical}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0925-4005}, doi = {10.1016/j.snb.2017.02.057}, pages = {961 -- 965}, year = {2017}, abstract = {To study chemical and biological processes, spatially resolved determination of the concentrations of one or more analyte species is of distinct interest. With a light-addressable potentiometric sensor (LAPS), chemical images can be created, which visualize the concentration distribution above the sensor plate. One important challenge is to achieve a good lateral resolution in order to detect events that take place in a small and limited region. LAPS utilizes a focused light spot to address the measurement region. By moving this light spot along the semiconductor sensor plate, the concentration distribution can be observed. In this study, we show that utilizing a pulse as light excitation instead of a traditionally used continuously modulated light excitation, the lateral resolution can be improved by a factor of 6 or more.}, language = {en} } @article{SchollMoraisGabrieletal.2017, author = {Scholl, Fabio and Morais, Paulo and Gabriel, Rayla and Sch{\"o}ning, Michael Josef and Siqueira, Jose Roberto, Jr. and Caseli, Luciano}, title = {Carbon nanotubes arranged as smart interfaces in lipid Langmuir-Blodgett films enhancing the enzymatic properties of penicillinase for biosensing applications}, series = {Applied Materials \& Interfaces}, volume = {9}, journal = {Applied Materials \& Interfaces}, number = {36}, publisher = {ACS}, address = {Washington}, issn = {1944-8252}, doi = {10.1021/acsami.7b08095}, pages = {31054 -- 31066}, year = {2017}, abstract = {In this paper, carbon nanotubes (CNTs) were incorporated in penicillinase-phospholipid Langmuir and Langmuir-Blodgett (LB) films to enhance the enzyme catalytic properties. Adsorption of the penicillinase and CNTs at dimyristoylphosphatidic acid (DMPA) monolayers at the air-water interface was investigated by surface pressure-area isotherms, vibrational spectroscopy, and Brewster angle microscopy. The floating monolayers were transferred to solid supports through the LB technique, forming mixed DMPA-CNTs-PEN films, which were investigated by quartz crystal microbalance, vibrational spectroscopy, and atomic force microscopy. Enzyme activity was studied with UV-vis spectroscopy and the feasibility of the supramolecular device nanostructured as ultrathin films were essayed in a capacitive electrolyte-insulator-semiconductor (EIS) sensor device. The presence of CNTs in the enzyme-lipid LB film not only tuned the catalytic activity of penicillinase but also helped conserve its enzyme activity after weeks, showing increased values of activity. Viability as penicillin sensor was demonstrated with capacitance/voltage and constant capacitance measurements, exhibiting regular and distinctive output signals over all concentrations used in this work. These results may be related not only to the nanostructured system provided by the film, but also to the synergism between the compounds on the active layer, leading to a surface morphology that allowed a fast analyte diffusion because of an adequate molecular accommodation, which also preserved the penicillinase activity. This work therefore demonstrates the feasibility of employing LB films composed of lipids, CNTs, and enzymes as EIS devices for biosensing applications.}, language = {en} } @article{TranMottaghyArltKoerferetal.2017, author = {Tran, Linda and Mottaghy, K. and Arlt-K{\"o}rfer, Sabine and Waluga, Christian and Behbahani, Mehdi}, title = {An experimental study of shear-dependent human platelet adhesion and underlying protein-binding mechanisms in a cylindrical Couette system}, series = {Biomedizinische Technik}, volume = {62}, journal = {Biomedizinische Technik}, number = {4}, publisher = {De Gruyter}, address = {Berlin}, issn = {0013-5585}, doi = {10.1515/bmt-2015-0034}, pages = {383 -- 392}, year = {2017}, language = {en} } @inproceedings{MiyamotoSutoWerneretal.2017, author = {Miyamoto, Ko-ichiro and Suto, Takeyuki and Werner, Frederik and Wagner, Torsten and Sch{\"o}ning, Michael Josef and Yoshinobu, Tatsuo}, title = {Restraining the Diffusion of Photocarriers to Improve the Spatial Resolution of the Chemical Imaging Sensor}, series = {MDPI Proceedings}, volume = {1}, booktitle = {MDPI Proceedings}, number = {4}, doi = {10.3390/proceedings1040477}, pages = {4 Seiten}, year = {2017}, language = {en} } @inproceedings{OberlaenderArreolaHansenetal.2017, author = {Oberl{\"a}nder, Jan and Arreola, Julio and Hansen, Christina and Greeff, Anton and Mayer, Marlena and Keusgen, Michael and Sch{\"o}ning, Michael Josef}, title = {Impedimetric Biosensor to Enable Fast Evaluation of Gaseous Sterilization Processes}, series = {MDPI Proceedings}, volume = {1}, booktitle = {MDPI Proceedings}, number = {4}, doi = {10.3390/proceedings1040435}, pages = {4 Seiten}, year = {2017}, language = {en} } @article{FigueroaMirandaFengShiuetal.2018, author = {Figueroa-Miranda, Gabriela and Feng, Lingyan and Shiu, Simon Chi-Chin and Dirkzwager, Roderick Marshall and Cheung, Yee-Wai and Tanner, Julian Alexander and Sch{\"o}ning, Michael Josef and Offenh{\"a}usser, Andreas and Mayer, Dirk}, title = {Aptamer-based electrochemical biosensor for highly sensitive and selective malaria detection with adjustable dynamic response range and reusability}, series = {Sensor and Actuators B: Chemical}, volume = {255}, journal = {Sensor and Actuators B: Chemical}, number = {P1}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0925-4005}, doi = {10.1016/j.snb.2017.07.117}, pages = {235 -- 243}, year = {2018}, abstract = {Malaria infection remains a significant risk for much of the population of tropical and subtropical areas, particularly in developing countries. Therefore, it is of high importance to develop sensitive, accurate and inexpensive malaria diagnosis tests. Here, we present a novel aptamer-based electrochemical biosensor (aptasensor) for malaria detection by impedance spectroscopy, through the specific recognition between a highly discriminatory DNA aptamer and its target Plasmodium falciparum lactate dehydrogenase (PfLDH). Interestingly, due to the isoelectric point (pI) of PfLDH, the aptasensor response showed an adjustable detection range based on the different protein net-charge at variable pH environments. The specific aptamer recognition allows sensitive protein detection with an expanded detection range and a low detection limit, as well as a high specificity for PfLDH compared to analogous proteins. The specific feasibility of the aptasensor is further demonstrated by detection of the target PfLDH in human serum. Furthermore, the aptasensor can be easily regenerated and thus applied for multiple usages. The robustness, sensitivity, and reusability of the presented aptasensor make it a promising candidate for point-of-care diagnostic systems.}, language = {en} } @article{MoraisGomesSilvaetal.2017, author = {Morais, Paulo V. and Gomes, Vanderley F., Jr. and Silva, Anielle C. A. and Dantas, Noelio O. and Sch{\"o}ning, Michael Josef and Siqueira, Jos{\´e} R., Jr.}, title = {Nanofilm of ZnO nanocrystals/carbon nanotubes as biocompatible layer for enzymatic biosensors in capacitive field-effect devices}, series = {Journal of Materials Science}, volume = {52}, journal = {Journal of Materials Science}, number = {20}, publisher = {Springer}, address = {Berlin}, issn = {1573-4803}, doi = {10.1007/s10853-017-1369-y}, pages = {12314 -- 12325}, year = {2017}, abstract = {The incorporation of nanomaterials that are biocompatible with different types of biological compounds has allowed the development of a new generation of biosensors applied especially in the biomedical field. In particular, the integration of film-based nanomaterials employed in field-effect devices can be interesting to develop biosensors with enhanced properties. In this paper, we studied the fabrication of sensitive nanofilms combining ZnO nanocrystals and carbon nanotubes (CNTs), prepared by means of the layer-by-layer (LbL) technique, in a capacitive electrolyte-insulator-semiconductor (EIS) structure for detecting glucose and urea. The ZnO nanocrystals were incorporated in a polymeric matrix of poly(allylamine) hydrochloride (PAH), and arranged with multi-walled CNTs in a LbL PAH-ZnO/CNTs film architecture onto EIS chips. The electrochemical characterizations were performed by capacitance-voltage and constant capacitance measurements, while the morphology of the films was characterized by atomic force microscopy. The enzymes glucose oxidase and urease were immobilized on film's surface for detection of glucose and urea, respectively. In order to obtain glucose and urea biosensors with optimized amount of sensitive films, we investigated the ideal number of bilayers for each detection system. The glucose biosensor showed better sensitivity and output signal for an LbL PAH-ZnO/CNTs nanofilm with 10 bilayers. On the other hand, the urea biosensor presented enhanced properties even for the first bilayer, exhibiting high sensitivity and output signal. The presence of the LbL PAH-ZnO/CNTs films led to biosensors with better sensitivity and enhanced response signal, demonstrating that the adequate use of nanostructured films is feasible for proof-of-concept biosensors with improved properties that may be employed for biomedical applications.}, language = {en} } @article{LambersBragard2017, author = {Lambers, Andreas and Bragard, Michael}, title = {Kinetische Skulptur - Treffen sich ein E-Techniker und ein K{\"u}nstler ...}, series = {Elektor : learn, design, share}, volume = {48}, journal = {Elektor : learn, design, share}, number = {9}, publisher = {Elektor-Verlag}, address = {Aachen}, issn = {0932-5468}, pages = {78 -- 83}, year = {2017}, abstract = {Die Verbindung der Welten dressierter Elektronen und grenzenloser Kreativit{\"a}t bietet ein großes Potential; zum Beispiel bei modernen Skulpturen, deren Form sich durch Motoren ver{\"a}ndern kann. An der FH Aachen wurde ein solches Projekt verwirklicht: Eine Matrix aus Holzkugeln kann Piktogramme anzeigen, aber auch mathematische Funktionen visualisieren. In diesem Artikel beschreiben wir die clevere Ansteuerung der Motoren.}, language = {de} } @book{NiethammerFissabre2017, author = {Niethammer, Bernhard and Fissabre, Anke}, title = {Die Steiff Spielwarenfabrik in Giengen / Brenz : Ein unbekanntes Meisterwerk der fr{\"u}hen Moderne}, publisher = {Geym{\"u}ller Verlag f{\"u}r Architektur}, address = {Aachen}, isbn = {978-3-943164-03-9}, pages = {64 S.}, year = {2017}, language = {de} } @inproceedings{EngemannWiesenKallweitetal.2018, author = {Engemann, Heiko and Wiesen, Patrick and Kallweit, Stephan and Deshpande, Harshavardhan and Schleupen, Josef}, title = {Autonomous mobile manipulation using ROS}, series = {Advances in Service and Industrial Robotics}, booktitle = {Advances in Service and Industrial Robotics}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-61276-8}, doi = {10.1007/978-3-319-61276-8_43}, pages = {389 -- 401}, year = {2018}, language = {en} } @article{RoehlenPilasSchoeningetal.2017, author = {R{\"o}hlen, Desiree and Pilas, Johanna and Sch{\"o}ning, Michael Josef and Selmer, Thorsten}, title = {Development of an amperometric biosensor platform for the combined determination of l-Malic, Fumaric, and l-Aspartic acid}, series = {Applied Biochemistry and Biotechnology}, volume = {183}, journal = {Applied Biochemistry and Biotechnology}, publisher = {Springer}, address = {Berlin}, issn = {1559-0291}, doi = {10.1007/s12010-017-2578-1}, pages = {566 -- 581}, year = {2017}, abstract = {Three amperometric biosensors have been developed for the detection of L-malic acid, fumaric acid, and L -aspartic acid, all based on the combination of a malate-specific dehydrogenase (MDH, EC 1.1.1.37) and diaphorase (DIA, EC 1.8.1.4). The stepwise expansion of the malate platform with the enzymes fumarate hydratase (FH, EC 4.2.1.2) and aspartate ammonia-lyase (ASPA, EC 4.3.1.1) resulted in multi-enzyme reaction cascades and, thus, augmentation of the substrate spectrum of the sensors. Electrochemical measurements were carried out in presence of the cofactor β-nicotinamide adenine dinucleotide (NAD+) and the redox mediator hexacyanoferrate (III) (HCFIII). The amperometric detection is mediated by oxidation of hexacyanoferrate (II) (HCFII) at an applied potential of + 0.3 V vs. Ag/AgCl. For each biosensor, optimum working conditions were defined by adjustment of cofactor concentrations, buffer pH, and immobilization procedure. Under these improved conditions, amperometric responses were linear up to 3.0 mM for L-malate and fumarate, respectively, with a corresponding sensitivity of 0.7 μA mM-1 (L-malate biosensor) and 0.4 μA mM-1 (fumarate biosensor). The L-aspartate detection system displayed a linear range of 1.0-10.0 mM with a sensitivity of 0.09 μA mM-1. The sensor characteristics suggest that the developed platform provides a promising method for the detection and differentiation of the three substrates.}, language = {en} } @article{PilasYaziciSelmeretal.2017, author = {Pilas, Johanna and Yazici, Yasemen and Selmer, Thorsten and Keusgen, Michael and Sch{\"o}ning, Michael Josef}, title = {Optimization of an amperometric biosensor array for simultaneous measurement of ethanol, formate, d- and l-lactate}, series = {Electrochimica Acta}, volume = {251}, journal = {Electrochimica Acta}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0013-4686}, doi = {10.1016/j.electacta.2017.07.119}, pages = {256 -- 262}, year = {2017}, abstract = {The immobilization of NAD+-dependent dehydrogenases, in combination with a diaphorase, enables the facile development of multiparametric sensing devices. In this work, an amperometric biosensor array for simultaneous determination of ethanol, formate, d- and l-lactate is presented. Enzyme immobilization on platinum thin-film electrodes was realized by chemical cross-linking with glutaraldehyde. The optimization of the sensor performance was investigated with regard to enzyme loading, glutaraldehyde concentration, pH, cofactor concentration and temperature. Under optimal working conditions (potassium phosphate buffer with pH 7.5, 2.5 mmol L-1 NAD+, 2.0 mmol L-1 ferricyanide, 25 °C and 0.4\% glutaraldehyde) the linear working range and sensitivity of the four sensor elements was improved. Simultaneous and cross-talk free measurements of four different metabolic parameters were performed successfully. The reliable analytical performance of the biosensor array was demonstrated by application in a clarified sample of inoculum sludge. Thereby, a promising approach for on-site monitoring of fermentation processes is provided.}, language = {en} } @article{AlbannaLuekeSjapicetal.2017, author = {Albanna, Walid and Lueke, Jan Niklas and Sjapic, Volha and Kotliar, Konstantin and Hescheler, J{\"u}rgen and Clusmann, Hans and Sjapic, Sergej and Alpdogan, Serdan and Schneider, Toni and Schubert, Gerrit Alexander and Neumaier, Felix}, title = {Electroretinographic Assessment of Inner Retinal Signaling in the Isolated and Superfused Murine Retina}, series = {Current Eye Research}, journal = {Current Eye Research}, number = {Article in press}, publisher = {Taylor \& Francis}, address = {London}, issn = {1460-2202}, doi = {10.1080/02713683.2017.1339807}, pages = {1 -- 9}, year = {2017}, language = {en} } @inproceedings{BreuerGuthmannSchoeningetal.2017, author = {Breuer, Lars and Guthmann, Eric and Sch{\"o}ning, Michael Josef and Thoelen, Ronald and Wagner, Torsten}, title = {Light-Stimulated Hydrogels with Incorporated Graphene Oxide as Actuator Material for Flow Control in Microfluidic Applications}, series = {Proceedings Eurosensors 2017 Conference, Paris, France, 3-6 September 2017}, booktitle = {Proceedings Eurosensors 2017 Conference, Paris, France, 3-6 September 2017}, doi = {10.3390/proceedings1040524}, pages = {1 -- 4}, year = {2017}, language = {en} } @article{BalzerStreitHeinze2017, author = {Balzer, Hermann and Streit, Daniel and Heinze, Marcel}, title = {Implikationen der Digitalisierung f{\"u}r den Finanzbereich der Unternehmung und das Rollenbild des CFO}, series = {Betriebswirtschaftliche Implikationen der digitalen Transformation. ZfbF - Schmalenbachs Zeitschrift f{\"u}r betriebswirtschaftliche Forschung, Sonderheft 72}, journal = {Betriebswirtschaftliche Implikationen der digitalen Transformation. ZfbF - Schmalenbachs Zeitschrift f{\"u}r betriebswirtschaftliche Forschung, Sonderheft 72}, number = {72}, editor = {Krause, Stefan}, publisher = {Springer}, address = {Berlin}, doi = {10.1007/978-3-658-18751-4_14}, pages = {267 -- 283}, year = {2017}, language = {de} } @inproceedings{StrieganHajAyedFunkeetal.2017, author = {Striegan, C. and Haj Ayed, A. and Funke, Harald and Loechle, S. and Kazari, M. and Horikawa, A. and Okada, K. and Koga, K.}, title = {Numerical combustion and heat transfer simulations and validation for a hydrogen fueled "micromix" test combustor in industrial gas turbine applications}, series = {Proceedings of the ASME Turbo Expo}, booktitle = {Proceedings of the ASME Turbo Expo}, number = {Volume Part F130041-4B, 2017}, isbn = {978-079185085-5}, doi = {10.1115/GT2017-64719}, year = {2017}, language = {en} } @inproceedings{Fissabre2017, author = {Fissabre, Anke}, title = {Technische Argumente im Diskurs f{\"u}r und wider das Flachdach in der klassischen Moderne}, series = {Alltag und Ver{\"a}nderung. Praktiken des Bauens und Konstruierens. Tagungsband der Zweiten Jahrestagung der Gesellschaft f{\"u}r Bautechnikgeschichte vom 23. bis 25. April 2015 in Innsbruck}, booktitle = {Alltag und Ver{\"a}nderung. Praktiken des Bauens und Konstruierens. Tagungsband der Zweiten Jahrestagung der Gesellschaft f{\"u}r Bautechnikgeschichte vom 23. bis 25. April 2015 in Innsbruck}, publisher = {Thelem}, address = {Dresden}, isbn = {978-3-945363-76-8}, pages = {45 -- 60}, year = {2017}, language = {de} } @book{JanserHavermannHoeveleretal.2016, author = {Janser, Frank and Havermann, Marc and Hoeveler, Bastian and Hertz, Cyril}, title = {Inkompressible Profil- und Tragfl{\"u}gelaerodynamik}, series = {Str{\"o}mungslehre und Aerodynamik ; Band 2}, journal = {Str{\"o}mungslehre und Aerodynamik ; Band 2}, edition = {1. Auflage}, publisher = {Verlagshaus Mainz GmbH}, address = {Aachen}, isbn = {978-3-8107-0261-6}, pages = {XIII, 208 Seiten}, year = {2016}, language = {de} } @article{RietschPfaffenrotBitzetal.2017, author = {Rietsch, Stefan H. G. and Pfaffenrot, Viktor and Bitz, Andreas and Orzada, Stephan and Brunheim, Sascha and Lazik-Palm, Andrea and Theysohn, Jens M. and Ladd, Mark E. and Quick, Harald H. and Kraff, Oliver}, title = {An 8-channel transceiver 7-channel receive RF coil setup for high SNR ultrahigh-field MRI of the shoulder at 7T}, series = {Medical Physics}, journal = {Medical Physics}, number = {Article in press}, publisher = {Wiley}, address = {Hoboken}, issn = {0094-2405}, doi = {10.1002/mp.12612}, year = {2017}, language = {en} } @article{KotliarHauserOrtneretal.2017, author = {Kotliar, Konstantin and Hauser, Christine and Ortner, Marion and Muggenthaler, Claudia and Diehl-Schmid, Janine and Angermann, Susanne and Hapfelmeier, Alexander and Schmaderer, Christoph and Grimmer, Timo}, title = {Altered neurovascular coupling as measured by optical imaging: a biomarker for Alzheimer's disease}, series = {Scientific Reports}, volume = {7}, journal = {Scientific Reports}, number = {1}, publisher = {Springer Nature}, address = {Cham}, issn = {2045-2322}, doi = {10.1038/s41598-017-13349-5}, pages = {1 -- 11}, year = {2017}, language = {en} } @article{BreuerMangSchoeningetal.2017, author = {Breuer, Lars and Mang, Thomas and Sch{\"o}ning, Michael Josef and Thoelen, Ronald and Wagner, Torsten}, title = {Investigation of the spatial resolution of a laser-based stimulation process for light-addressable hydrogels with incorporated graphene oxide by means of IR thermography}, series = {Sensors and Actuators A: Physical}, volume = {268}, journal = {Sensors and Actuators A: Physical}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0924-4247}, doi = {10.1016/j.sna.2017.11.031}, pages = {126 -- 132}, year = {2017}, language = {en} } @inproceedings{EndressBragard2017, author = {Endress, Tim and Bragard, Michael}, title = {Recording of efficiency-maps of low-power electric drive systems using a flexible matlab-based test bench}, series = {2017 IEEE 58th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)}, booktitle = {2017 IEEE 58th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)}, publisher = {IEEE}, address = {New York}, isbn = {978-1-5386-3846-0}, doi = {10.1109/RTUCON.2017.8124775}, pages = {5 Seiten}, year = {2017}, abstract = {This paper introduces a hardware setup to measure efficiency maps of low-power electric motors and their associated inverters. Here, the power of the device under test (DUT) ranges from some Watts to a few hundred Watts. The torque and speed of the DUT are measured independent of voltage and current in multiple load points. A Matlab-based software approach in combination with an open Texas-Instruments (TI) hardware setup ensures flexibility. Exemplarily, the efficiency field of a Permanent Magnet Synchronous Machine (PMSM) is measured to proof the concept. Brushless-DC (BLDC) motors can be tested as well. The nomenclature in this paper is based on the new European standard DIN EN 50598. Special attention is paid to the calculation of the measurement error.}, language = {en} } @article{DemmerChowdhurySelmeretal.2017, author = {Demmer, Julius K. and Chowdhury, Nilanjan Pal and Selmer, Thorsten and Ermler, Ulrich and Buckel, Wolfgang}, title = {The semiquinone swing in the bifurcating electron transferring flavoprotein/butyryl-CoA dehydrogenase complex from Clostridium difficile}, series = {Nature Communications}, volume = {8}, journal = {Nature Communications}, number = {1}, issn = {2041-1723}, doi = {10.1038/s41467-017-01746-3}, pages = {1 -- 10}, year = {2017}, language = {en} } @article{WerkhausenAlbrachtCroninetal.2017, author = {Werkhausen, Amelie and Albracht, Kirsten and Cronin, Neil J. and Meier, Rahel and Mojsen-Moeller, Jens and Seynnes, Olivier R.}, title = {Modulation of muscle-tendon interaction in the human triceps surae during an energy dissipation task}, series = {Journal of Experimental Biology}, volume = {220}, journal = {Journal of Experimental Biology}, number = {22}, issn = {0022-0949}, doi = {10.1242/jeb.164111}, pages = {4141 -- 4149}, year = {2017}, language = {en} } @book{SchneiderSchneider2017, author = {Schneider, Bettina and Schneider, Wilhelm}, title = {Abschluss und Abschlussanalyse: systematische Darstellung in {\"U}bersichten}, edition = {6. Auflage, Studienausgabe}, publisher = {Cuvillier}, address = {G{\"o}ttingen}, isbn = {978-3-7369-9642-7}, pages = {Getr. Z{\"a}hlung}, year = {2017}, language = {de} } @article{Hoettges2017, author = {H{\"o}ttges, J{\"o}rg}, title = {QKan - Management of drainage system data with QGIS}, series = {Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings}, volume = {17}, journal = {Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings}, number = {Article 13}, pages = {95 -- 100}, year = {2017}, language = {en} } @article{SrivastavaChaharSharmaetal.2017, author = {Srivastava, A. and Chahar, V. and Sharma, V. and Sun, Y. and Bol, R. and Knolle, F. and Schnug, E. and Hoyler, Friedrich and Naskar, N. and Lahiri, S. and Patnaik, R.}, title = {Study of uranium toxicity using low-background gamma-ray spectrometry}, series = {Journal of Radioanalytical and Nuclear Chemistry}, journal = {Journal of Radioanalytical and Nuclear Chemistry}, number = {Online first}, publisher = {Springer}, address = {Berlin}, issn = {1588-2780}, doi = {10.1007/s10967-017-5466-9}, pages = {1 -- 7}, year = {2017}, language = {en} } @article{GaribaldiBegingCaneseetal.2017, author = {Garibaldi, F. and Beging, Stefan and Canese, R. and Carpinelli, G. and Clinthorne, N. and Colilli, S. and Cosentino, L. and Finocchiaro, P. and Giuliani, F. and Gricia, M. and Lucentini, M. and Majewski, S. and Monno, E. and Musico, P. and Santavenere, F. and T{\"o}dter, J. and Wegener, Hans-Peter and Ziemons, Karl}, title = {A novel TOF-PET MRI detector for diagnosis and follow up of the prostate cancer}, series = {European Physical Journal Plus}, volume = {132}, journal = {European Physical Journal Plus}, number = {9}, publisher = {Springer}, address = {Berlin}, issn = {2190-5444}, doi = {10.1140/epjp/i2017-11662-x}, year = {2017}, language = {en} } @article{OrzadaBitzJohstetal.2017, author = {Orzada, Stephan and Bitz, Andreas and Johst, S{\"o}ren and Gratz, Marcel and V{\"o}lker, Maximilian N. and Kraff, Oliver and Abuelhaija, Ashraf and Fiedler, Thomas M. and Solbach, Klaus and Quick, Harald H. and Ladd, Mark E.}, title = {Analysis of an integrated 8-Channel Tx/Rx body array for use as a body coil in 7-Tesla MRI}, series = {Frontiers in Physics}, volume = {5}, journal = {Frontiers in Physics}, number = {Jun}, issn = {2296-424X}, doi = {10.3389/fphy.2017.00017}, year = {2017}, language = {en} } @article{Pfaff2017, author = {Pfaff, Raphael}, title = {Einsatz von offenen Onlinekursen in der Eisenbahnlehre}, series = {Deine Bahn}, journal = {Deine Bahn}, number = {1}, publisher = {Bahn-Fachverlag}, address = {Berlin}, issn = {0948-7263}, pages = {12 -- 16}, year = {2017}, abstract = {Eigene positive Erfahrungen mit Onlinekursen sowie die geringen Studierendenzahlen in der Pr{\"a}senzlehre gaben den Anstoß zu einem Experiment mit einem offenen Onlinekurs auf der Plattform Udemy. Die Erfahrungen sowohl bei der Erstellung und als auch im Lehrbetrieb waren positiv und f{\"u}hrten zu einer neuen Besch{\"a}ftigung mit Inhalten und Lernenden, getrieben durch die Anforderungen der Lernplattform.}, language = {de} }