TY - JOUR AU - Gilroy, Bernard Michael AU - Mykhalskyy, Vladyslav AU - Seiler, Volker ID - 4789 IS - 2-3 JF - WiSt-Wirtschaftswissenschaftliches Studium TI - Style Analyse im Fondsmanagement: Nicht-lineare Optimierung mit Excel Solver ER - TY - JOUR AU - Seiler, Volker AU - Kröger, Sarah AU - Gilroy, Bernard Michael ID - 4790 IS - 11 JF - WiSt-Wirtschaftswissenschaftliches Studium TI - Die Überprüfung der Random Walk Hypothese mit Hilfe des Variance Ratio Tests ER - TY - GEN AU - Seiler, Volker AU - Taach, Evgenia ID - 4791 TI - Efectiveness of Official Development Assistance-Further Evidence from DAC Countries ER - TY - CHAP AU - Kundisch, Dennis AU - Gutt, Dominik ED - Hannappel, Sandra ED - Rehm, Rebekka ID - 48 T2 - Digitale Ökonomie - Wie verändern sich die Märkte? TI - Was bedeutet die Transformation der Märkte im digitalen Zeitalter? Ökonomische Grundlagen ER - TY - JOUR AU - Gilroy, Bernard Michael AU - Volker, Seiler AU - Kröger, Sarah ID - 4801 JF - wisu - das Wirtschaftsstudium TI - Random-Walk-Hypothese ER - TY - JOUR AU - Wecker, Tobias AU - Callsen, Gordon AU - Hoffmann, Axel AU - Reuter, Dirk AU - As, Donat Josef ID - 4808 IS - 5 JF - physica status solidi (b) SN - 0370-1972 TI - Correlation of the Carrier Decay Time and Barrier Thickness for Asymmetric Cubic GaN/Al0.64Ga0.36N Double Quantum Wells VL - 255 ER - TY - JOUR AU - Wecker, T. AU - Jostmeier, T. AU - Rieger, T. AU - Neumann, E. AU - Pawlis, A. AU - Betz, M. AU - Reuter, Dirk AU - As, Donat Josef ID - 4810 JF - Journal of Crystal Growth SN - 0022-0248 TI - Linear and nonlinear behaviour of near-IR intersubband transitions of cubic GaN/AlN multi quantum well structures VL - 477 ER - TY - JOUR AU - Deppe, Michael AU - Gerlach, Jürgen W. AU - Reuter, Dirk AU - As, Donat Josef ID - 4811 IS - 8 JF - physica status solidi (b) SN - 0370-1972 TI - Incorporation of germanium for n-type doping of cubic GaN VL - 254 ER - TY - JOUR AU - Czerniuk, T. AU - Ehrlich, T. AU - Wecker, T. AU - As, Donat Josef AU - Yakovlev, D. R. AU - Akimov, A. V. AU - Bayer, M. ID - 4812 IS - 1 JF - Physical Review Applied SN - 2331-7019 TI - Picosecond Acoustics in Single Quantum Wells of Cubic GaN/(Al,Ga)N VL - 7 ER - TY - JOUR AU - As, Donat Josef AU - Deppe, Michael AU - Gerlach, Jürgen AU - Reuter, Dirk ID - 4813 IS - 05 JF - MRS Advances SN - 2059-8521 TI - Optical Properties of Germanium Doped Cubic GaN VL - 2 ER - TY - JOUR AU - Terho, Harri AU - Eggert, Andreas AU - Ulaga, Wolfgang AU - Haas, Alexander AU - Boehm, Eva ID - 4836 JF - Industrial Marketing Management TI - Selling Value in Business Markets: Individual and Organizational Factors for Turning the Idea into Action ER - TY - JOUR AU - Payne, Adrian AU - Frow, Pennie AU - Eggert, Andreas ID - 4837 IS - 4 JF - Journal of the Academy of Marketing Science TI - The customer value proposition: evolution, development, and application in marketing ER - TY - JOUR AU - Eggert, Andreas AU - Boehm, Eva AU - Cramer, Christina ID - 4838 IS - 3 JF - Journal of Service Management TI - Business service outsourcing in manufacturing firms: an event study ER - TY - JOUR AU - Boehm, Eva AU - Eggert, Andreas AU - Thiesbrummel, Christoph ID - 4840 JF - Industrial Marketing Management TI - Service transition: A viable option for manufacturing companies with deteriorating financial performance? ER - TY - CONF AB - A multiplicity of visual languages have been proposed for representing business models. These languages are claimed to facilitate tasks such as understanding, communicating, and innovating a business model; and have been developed rather independently by scholars from accounting, computer science, information systems, and strategy. Consequently, the existing approaches greatly differ and to some extent contradict each other, for example, regarding their understanding of the business model concept, their terminology, and their visual notations – which means there is little common ground for developing a cumulative stream of research. Therefore, we provide a systematic, cross-disciplinary review of this emerging field and synthesize the pragmatic, semantic, and syntactic foundations of the proposed approaches. Further, we derive an agenda for future research and discuss the challenges that lie ahead to advance the field. AU - John, Thomas AU - Kundisch, Dennis AU - Szopinski, Daniel ID - 49 T2 - Proceedings of the 38th International Conference on Information Systems (ICIS), Seoul, South Korea TI - Visual Languages for Modeling Business Models: A Critical Review and Future Research Directions ER - TY - BOOK ED - Helm, Sabrina ED - Günter, Bernd ED - Eggert, Andreas ID - 4908 SN - 9783658109196 TI - Kundenwert ER - TY - JOUR AB - Manufacturers increasingly integrate information and communication technologies into their products so that they can provide IT-based services. Organizations that formerly concentrated on transactional sales thus confront a new challenge associated with managing service usage—retention and extracting value from investments in smart technology. This study combines a marketing and an information systems perspective in a field study conducted jointly with a large European car manufacturer. Understanding the renewal decision for IT-based service contracts requires knowledge from both disciplines. The paper shows that combining behavioral predictor variables stemming from marketing research and technology-related perceptual variables stemming from technology acceptance research increases the explanatory power and prediction accuracy of forecasting models for customer renewal decisions. Specifically, the authors show that perceptions of usefulness become more important the longer customers use IT-based services and the more services they use within the service contract. AU - Wangenheim, Florian v AU - Wünderlich, Nancy V AU - Schumann, Jan H ID - 4933 IS - 79 JF - Journal of Business Research TI - Renew or cancel? Drivers of customer renewal decisions for IT-based service contracts ER - TY - CHAP AU - Eggert, Andreas ID - 4939 SN - 9783834943453 T2 - Kundenwert TI - Die zwei Perspektiven des Kundenwerts: Darstellung und Versuch einer Integration ER - TY - CHAP AU - Eggert, Andreas ID - 4941 SN - 9783658109196 T2 - Kundenwert TI - Die zwei Perspektiven des Kundenwerts: Darstellung und Versuch einer Integration ER - TY - CHAP AU - Helm, Sabrina AU - Günter, Bernd AU - Eggert, Andreas ID - 4942 SN - 9783658109196 T2 - Kundenwert TI - Kundenwert – eine Einführung in die theoretischen und praktischen Herausforderungen der Bewertung von Kundenbeziehungen ER -