@article{AltherrEdererLorenzetal.2014,
  author    = {Altherr, Lena and Ederer, Thorsten and Lorenz, Ulf and Pelz, Peter F. and P{\"o}ttgen, Philipp},
  title     = {Experimental validation of an enhanced system synthesis approach},
  series = {Operations Research Proceedings 2014},
  journal   = {Operations Research Proceedings 2014},
  editor    = {L{\"u}bbecke, Marco and Koster, Arie and Letmathe, Peter and Madlener, Reihard and Peis, Britta and Walther, Grit},
  publisher = {Springer},
  address   = {Basel},
  isbn      = {978-3-319-28695-2},
  doi       = {10.1007/978-3-319-28697-6_1},
  pages     = {6},
  year      = {2014},
  abstract  = {Planning the layout and operation of a technical system is a common task for an engineer. Typically, the workflow is divided into consecutive stages: First, the engineer designs the layout of the system, with the help of his experience or of heuristic methods. Secondly, he finds a control strategy which is often optimized by simulation. This usually results in a good operating of an unquestioned sys- tem topology. In contrast, we apply Operations Research (OR) methods to find a cost-optimal solution for both stages simultaneously via mixed integer program- ming (MILP). Technical Operations Research (TOR) allows one to find a provable global optimal solution within the model formulation. However, the modeling error due to the abstraction of physical reality remains unknown. We address this ubiq- uitous problem of OR methods by comparing our computational results with mea- surements in a test rig. For a practical test case we compute a topology and control strategy via MILP and verify that the objectives are met up to a deviation of 8.7\%.},
  language  = {en}
}
@incollection{AltherrLeise2021,
  author    = {Altherr, Lena and Leise, Philipp},
  title     = {Resilience as a concept for mastering uncertainty},
  series = {Mastering Uncertainty in Mechanical Engineering},
  booktitle = {Mastering Uncertainty in Mechanical Engineering},
  publisher = {Springer},
  address   = {Cham},
  isbn      = {978-3-030-78353-2},
  doi       = {10.1007/978-3-030-78354-9},
  pages     = {412 -- 417},
  year      = {2021},
  language  = {en}
}
@incollection{AltherrLeisePfetschetal.2021,
  author    = {Altherr, Lena and Leise, Philipp and Pfetsch, Marc E. and Schmitt, Andreas},
  title     = {Optimal design of resilient technical systems on the example of water supply systems},
  series = {Mastering Uncertainty in Mechanical Engineering},
  booktitle = {Mastering Uncertainty in Mechanical Engineering},
  publisher = {Springer},
  address   = {Cham},
  isbn      = {978-3-030-78356-3},
  pages     = {429 -- 433},
  year      = {2021},
  language  = {en}
}
@incollection{LeiseAltherr2021,
  author    = {Leise, Philipp and Altherr, Lena},
  title     = {Experimental evaluation of resilience metrics in a fluid system},
  series = {Mastering Uncertainty in Mechanical Engineering},
  booktitle = {Mastering Uncertainty in Mechanical Engineering},
  publisher = {Springer},
  address   = {Cham},
  isbn      = {978-3-030-78356-3},
  pages     = {442 -- 447},
  year      = {2021},
  language  = {en}
}
@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}
}
@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}
}
@article{MonakhovaDiehl2021,
  author    = {Monakhova, Yulia and Diehl, Bernd W. K.},
  title     = {Simplification of NMR Workflows by Standardization Using 2H Integral of Deuterated Solvent as Applied to Aloe vera Preparations},
  series = {Applied Magnetic Resonance},
  volume    = {52},
  journal   = {Applied Magnetic Resonance},
  number    = {11},
  publisher = {Springer},
  address   = {Cham},
  issn      = {1613-7507},
  doi       = {10.1007/s00723-021-01393-4},
  pages     = {1591 -- 1600},
  year      = {2021},
  abstract  = {In this study, a recently proposed NMR standardization approach by 2H integral of deuterated solvent for quantitative multicomponent analysis of complex mixtures is presented. As a proof of principle, the existing NMR routine for the analysis of Aloe vera products was modified. Instead of using absolute integrals of targeted compounds and internal standard (nicotinamide) from 1H-NMR spectra, quantification was performed based on the ratio of a particular 1H-NMR compound integral and 2H-NMR signal of deuterated solvent D2O. Validation characteristics (linearity, repeatability, accuracy) were evaluated and the results showed that the method has the same precision as internal standardization in case of multicomponent screening. Moreover, a dehydration process by freeze drying is not necessary for the new routine. Now, our NMR profiling of A. vera products needs only limited sample preparation and data processing. The new standardization methodology provides an appealing alternative for multicomponent NMR screening. In general, this novel approach, using standardization by 2H integral, benefits from reduced sample preparation steps and uncertainties, and is recommended in different application areas (purity determination, forensics, pharmaceutical analysis, etc.).},
  language  = {en}
}
@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{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}
}
@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}
}
@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{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}
}
@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}
}
@article{PoghossianWeilCherstvyetal.2013,
  author    = {Poghossian, Arshak and Weil, M. and Cherstvy, A. G. and Sch{\"o}ning, Michael Josef},
  title     = {Electrical monitoring of polyelectrolyte multilayer formation by means of capacitive field-effect devices},
  series = {Analytical and bioanalytical chemistry},
  volume    = {405},
  journal   = {Analytical and bioanalytical chemistry},
  number    = {20},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {1432-1130 ; 1618-2642},
  doi       = {10.1007/s00216-013-6951-9},
  pages     = {6425 -- 6436},
  year      = {2013},
  abstract  = {The semiconductor field-effect platform represents a powerful tool for detecting the adsorption and binding of charged macromolecules with direct electrical readout. In this work, a capacitive electrolyte-insulator-semiconductor (EIS) field-effect sensor consisting of an Al-p-Si-SiO2 structure has been applied for real-time in situ electrical monitoring of the layer-by-layer formation of polyelectrolyte (PE) multilayers (PEM). The PEMs were deposited directly onto the SiO2 surface without any precursor layer or drying procedures. Anionic poly(sodium 4-styrene sulfonate) and cationic weak polyelectrolyte poly(allylamine hydrochloride) have been chosen as a model system. The effect of the ionic strength of the solution, polyelectrolyte concentration, number and polarity of the PE layers on the characteristics of the PEM-modified EIS sensors have been studied by means of capacitance-voltage and constant-capacitance methods. In addition, the thickness, surface morphology, roughness and wettabilityof the PE mono- and multilayers have been characterised by ellipsometry, atomic force microscopy and water contact-angle methods, respectively. To explain potential oscillations on the gate surface and signal behaviour of the capacitive field-effect EIS sensor modified with a PEM, a simplified electrostatic model that takes into account the reduced electrostatic screening of PE charges by mobile ions within the PEM has been proposed and discussed.},
  language  = {en}
}
@article{BeckerFrauenrathHezeletal.2010,
  author    = {Becker, Meike and Frauenrath, Tobias and Hezel, Fabian and Krombach, Gabriele A. and Kremer, Ute and Koppers, Benedikt and Butenweg, Christoph and Goemmel, Andreas and Utting, Jane F. and Schulz-Menger, Jeanette and Niendorf, Thoralf},
  title     = {Comparison of left ventricular function assessment using phonocardiogram- and electrocardiogram-triggered 2D SSFP CINE MR imaging at 1.5 T and 3.0 T},
  series = {European Radiology},
  volume    = {20},
  journal   = {European Radiology},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {1432-1084 (Onlineausgabe)},
  doi       = {10.1007/s00330-009-1676-z},
  pages     = {1344 -- 1355},
  year      = {2010},
  abstract  = {Objective: As high-field cardiac MRI (CMR) becomes more widespread the propensity of ECG to interference from electromagnetic fields (EMF) and to magneto-hydrodynamic (MHD) effects increases and with it the motivation for a CMR triggering alternative. This study explores the suitability of acoustic cardiac triggering (ACT) for left ventricular (LV) function assessment in healthy subjects (n=14). Methods: Quantitative analysis of 2D CINE steady-state free precession (SSFP) images was conducted to compare ACT's performance with vector ECG (VCG). Endocardial border sharpness (EBS) was examined paralleled by quantitative LV function assessment. Results: Unlike VCG, ACT provided signal traces free of interference from EMF or MHD effects. In the case of correct Rwave recognition, VCG-triggered 2D CINE SSFP was immune to cardiac motion effects—even at 3.0 T. However, VCG-triggered 2D SSFP CINE imaging was prone to cardiac motion and EBS degradation if R-wave misregistration occurred. ACT-triggered acquisitions yielded LV parameters (end-diastolic volume (EDV), endsystolic volume (ESV), stroke volume (SV), ejection fraction (EF) and left ventricular mass (LVM)) comparable with those derived fromVCG-triggered acquisitions (1.5 T: ESVVCG=(56± 17) ml, EDVVCG=(151±32)ml, LVMVCG=(97±27) g, SVVCG=(94± 19)ml, EFVCG=(63±5)\% cf. ESVACT= (56±18) ml, EDVACT=(147±36) ml, LVMACT=(102±29) g, SVACT=(91± 22) ml, EFACT=(62±6)\%; 3.0 T: ESVVCG=(55±21) ml, EDVVCG=(151±32) ml, LVMVCG=(101±27) g, SVVCG=(96±15) ml, EFVCG=(65±7)\% cf. ESVACT=(54±20) ml, EDVACT=(146±35) ml, LVMACT= (101±30) g, SVACT=(92±17) ml, EFACT=(64±6)\%). Conclusions: ACT's intrinsic insensitivity to interference from electromagnetic fields renders},
  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}
}
@article{EggertAlberts2020,
  author    = {Eggert, Mathias and Alberts, Jens},
  title     = {Frontiers of business intelligence and analytics 3.0: a taxonomy-based literature review and research agenda},
  series = {Business Research},
  volume    = {2020},
  journal   = {Business Research},
  number    = {13},
  publisher = {Springer},
  address   = {Heidelberg},
  issn      = {2198-2627},
  doi       = {10.1007/s40685-020-00108-y},
  pages     = {685 -- 739},
  year      = {2020},
  abstract  = {Researching the field of business intelligence and analytics (BI \& A) has a long tradition within information systems research. Thereby, in each decade the rapid development of technologies opened new room for investigation. Since the early 1950s, the collection and analysis of structured data were the focus of interest, followed by unstructured data since the early 1990s. The third wave of BI \& A comprises unstructured and sensor data of mobile devices. The article at hand aims at drawing a comprehensive overview of the status quo in relevant BI \& A research of the current decade, focusing on the third wave of BI \& A. By this means, the paper's contribution is fourfold. First, a systematically developed taxonomy for BI \& A 3.0 research, containing seven dimensions and 40 characteristics, is presented. Second, the results of a structured literature review containing 75 full research papers are analyzed by applying the developed taxonomy. The analysis provides an overview on the status quo of BI \& A 3.0. Third, the results foster discussions on the predicted and observed developments in BI \& A research of the past decade. Fourth, research gaps of the third wave of BI \& A research are disclosed and concluded in a research agenda.},
  language  = {en}
}
@article{QuittmannAbelAlbrachtetal.2020,
  author    = {Quittmann, Oliver J. and Abel, Thomas and Albracht, Kirsten and Meskemper, Joshua and Foitschik, Tina and Str{\"u}der, Heiko K.},
  title     = {Biomechanics of handcycling propulsion in a 30-min continuous load test at lactate threshold: Kinetics, kinematics, and muscular activity in able-bodied participants},
  series = {European Journal of Applied Physiology},
  journal   = {European Journal of Applied Physiology},
  number    = {120},
  publisher = {Springer},
  address   = {Heidelberg},
  issn      = {1439-6327},
  doi       = {10.1007/s00421-020-04373-x},
  pages     = {1403 -- 1415},
  year      = {2020},
  abstract  = {Purpose This study aims to investigate the biomechanics of handcycling during a continuous load trial (CLT) to assess the mechanisms underlying fatigue in upper body exercise. Methods Twelve able-bodied triathletes performed a 30-min CLT at a power output corresponding to lactate threshold in a racing recumbent handcycle mounted on a stationary ergometer. During the CLT, ratings of perceived exertion (RPE), tangential crank kinetics, 3D joint kinematics, and muscular activity of ten muscles of the upper extremity and trunk were examined using motion capturing and surface electromyography. Results During the CLT, spontaneously chosen cadence and RPE increased, whereas crank torque decreased. Rotational work was higher during the pull phase. Peripheral RPE was higher compared to central RPE. Joint range of motion decreased for elbow-flexion and radial-duction. Integrated EMG (iEMG) increased in the forearm flexors, forearm extensors, and M. deltoideus (Pars spinalis). An earlier onset of activation was found for M. deltoideus (Pars clavicularis), M. pectoralis major, M. rectus abdominis, M. biceps brachii, and the forearm flexors. Conclusion Fatigue-related alterations seem to apply analogously in handcycling and cycling. The most distal muscles are responsible for force transmission on the cranks and might thus suffer most from neuromuscular fatigue. The findings indicate that peripheral fatigue (at similar lactate values) is higher in handcycling compared to leg cycling, at least for inexperienced participants. An increase in cadence might delay peripheral fatigue by a reduced vascular occlusion. We assume that the gap between peripheral and central fatigue can be reduced by sport-specific endurance training.},
  language  = {en}
}