TY - JOUR A1 - Krasnova, Hanna A1 - Veltri, Natasha F. A1 - Spengler, Klaus A1 - Günther, Oliver T1 - "Deal of the Day" Platforms what drives Consumer loyalty? JF - Business & information systems engineering : the international journal of Wirtschaftsinformatik N2 - "Deal of the Day" (DoD) platforms have quickly become popular by offering savings on local services, products and vacations. For merchants, these platforms represent a new marketing channel to advertise their products and services and attract new customers. DoD platform providers, however, struggle to maintaining a stable market share and profitability, because entry and switching costs are low. To sustain a competitive market position, DoD providers are looking for ways to build a loyal customer base. However, research examining the determinants of user loyalty in this novel context is scarce. To fill this gap, this study employs Grounded Theory methodology to develop a conceptual model of customer loyalty to a DoD provider. In the next step, qualitative insights are enriched and validated using quantitative data from a survey of 202 DoD users. The authors find that customer loyalty is in large part driven by monetary incentives, but can be eroded if impressions from merchant encounters are below expectations. In addition, enhancing the share of deals relevant for consumers, i.e. signal-to-noise ratio, and mitigating perceived risks of a transaction emerge as challenges. Beyond theoretical value, the results offer practical insights into how customer loyalty to a DoD provider can be promoted. KW - Deal of the Day KW - Loyalty KW - Grounded theory KW - Structural equation modeling Y1 - 2013 U6 - https://doi.org/10.1007/s12599-013-0268-2 SN - 1867-0202 VL - 5 IS - 3 SP - 165 EP - 177 PB - Springer CY - Heidelberg ER - TY - JOUR A1 - Fabian, Benjamin A1 - Kunz, Steffen A1 - Konnegen, Marcel A1 - Müller, Sebastian A1 - Günther, Oliver T1 - Access control for semantic data federations in industrial product-lifecycle management JF - Computers in industry : an international, application oriented research journal N2 - Information integration across company borders becomes increasingly important for the success of product lifecycle management in industry and complex supply chains. Semantic technologies are about to play a crucial role in this integrative process. However, cross-company data exchange requires mechanisms to enable fine-grained access control definition and enforcement, preventing unauthorized leakage of confidential data across company borders. Currently available semantic repositories are not sufficiently equipped to satisfy this important requirement. This paper presents an infrastructure for controlled sharing of semantic data between cooperating business partners. First, we motivate the need for access control in semantic data federations by a case study in the industrial service sector. Furthermore, we present an architecture for controlling access to semantic repositories that is based on our newly developed SemForce security service. Finally, we show the practical feasibility of this architecture by an implementation and several performance experiments. KW - Access control KW - Data federation KW - Information integration KW - Product lifecycle management KW - Semantic data Y1 - 2012 U6 - https://doi.org/10.1016/j.compind.2012.08.015 SN - 0166-3615 VL - 63 IS - 9 SP - 930 EP - 940 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Günther, Oliver T1 - Big Data: What is it? And what does it mean for science, economy and society? JF - Informatik-Spektrum Y1 - 2014 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84897396415&partnerID=MN8TOARS U6 - https://doi.org/10.1007/s00287-014-0783-7 SN - 0170-6012 VL - 37 IS - 2 SP - 85 EP - 86 PB - Springer Verlag CY - Heidelberg ER - TY - JOUR A1 - Günther, Oliver A1 - van Putten, Bart-Jan A1 - Brecht, Franziska T1 - Challenges in Business Case Development and Requirements for Business Case Frameworks JF - Supporting Reuse in Business Case Development N2 - Business cases (BC) are often used to support information systems (IS) investment evaluation. Unfortunately, business case development (BCD) is a complex task, especially identifying and quantifying the benefits of a proposed investment. Although today’s business case frameworks (BCF) support BCD to some extent, they have several limitations Y1 - 2013 SN - 978-3-658-01170-3 U6 - https://doi.org/10.1007/978-3-658-01171-0_2 SP - 8 EP - 22 PB - Springer CY - Wiesbaden ER - TY - JOUR A1 - Günther, Oliver A1 - Brecht, Franziska A1 - Eckhardt, Andreas A1 - Berger, Christian T1 - Corporate career presences on social network sites: an analysis of hedonic and utilitarian value JF - CHI '12 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems N2 - Due to the shortage of skilled workforce and the increasing usage of social network sites, companies increasingly apply social network sites to attract potential applicants. This paper explores how corporate career presences on network sites should be realized in order to attract potential applicants. Therefore, we tested the impact of seven individual characteristics (namely Appointments, Daily Working Routine, Jobs, Corporate News, Entertainment, Media Format, and Features) of these corporate career presences that we extracted by a comprehensive pre-study on users' perceived hedonic and utilitarian value of these presences on social network sites. Based on an online survey with 470 participants, the results reveal a highly significant impact of five characteristics that corporate career presences provide both a hedonic as well as a utilitarian value to the user Y1 - 2012 SN - 978-1-4503-1015-4 U6 - https://doi.org/10.1145/2207676.2208408 SP - 2441 EP - 2450 PB - ACM CY - Texas ER - TY - CHAP A1 - Günther, Oliver A1 - Winkler, Till J. T1 - Explaining the governance of software as a service applications BT - A process view T2 - Multikonferenz Wirtschaftsinformatik 2012 - Tagungsband der MKWI 2012 N2 - Defining the allocation of decision rights for enterprise applications is a crucial issue in IT governance and organization design. Today, emerging delivery models such as Software as a Service (SaaS) defy the notion of the internal IT department as the focal point of centralized governance. Recognizing the importance of this issue, we find that the phenomenon of 'SaaS governance' itself is not yet well understood. Based on two cases of SaaS adoption, we take a process-theoretic approach to investigate the complex interaction between factors that influence in the allocation of SaaS authority. The results suggest that some factors, such as the locus of initiative and the decision for SaaS, interact with absorptive capacities and determine the later mode of application governance at a very early stage. Thus, the initiative for introducing SaaS emerges as an important intermediate variable between the overall IT governance mode and the resulting SaaS governance outcome. Y1 - 2012 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84879878424&partnerID=MN8TOARS SN - 978-3-942183-63-5 SP - 599 EP - 612 PB - Gito CY - Berlin ER - TY - JOUR A1 - Winkler, Till J. A1 - Goebel, Christoph A1 - Bidault, Francis A1 - Günther, Oliver T1 - Information technology and business practieses in Germany BT - results from the 2011 bit survey JF - The UCLA Anderson Business and Information Technologies (BIT) Project Y1 - 2012 U6 - https://doi.org/10.1142/9789814390880_0005 SP - 81 EP - 114 PB - world scientific CY - Singapore ER - TY - JOUR A1 - Günther, Oliver A1 - Leopold, Henrik A1 - Mendling, Jan T1 - Learning from quality issues of BPMN models from industry BT - extended abstract JF - CEUR Workshop Proceedings N2 - Many organizations use business process models for documenting their business operations. In recent years, the Business Process Model and Notation (BPMN) evolved into the leading standard for process modeling. However, BPMN is complex: The specification offers a huge variety of different elements and often several representational choices for the same semantics. This raises the question of how well modelers can deal with these choices. Empirical insights into BPMN usage from the perspective of practitioners are still missing. We close this gap by analyzing a large set of BPMN 2.0 process models from practice. We found that particularly representational choices for splits and joins, the correct use of message flow, the proper decomposition of models, and the consistent labeling appear to be connected with quality issues. Based on our findings we give five recommendations how these issues can be avoided in the future. The work summarized in this extended abstract has been published in [LMG16]. KW - BPMN modeling guidelines KW - Modeling recommendations KW - Process model quality Y1 - 2016 UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-84996503810&origin=inward&txGid=98101b239363e3f806d7fadf22f788e2 SN - 1613-0073 VL - 1701 SP - 36 EP - 38 ER - TY - JOUR A1 - Günther, Oliver A1 - Leopold, Henrik A1 - Mendling, Jan T1 - Learning from quality issues of BPMN models from industry JF - IEEE Software N2 - Many organizations use business process models to document business operations and formalize business requirements in software-engineering projects. The Business Process Model and Notation (BPMN), a specification by the Object Management Group, has evolved into the leading standard for process modeling. One challenge is BPMN's complexity: it offers a huge variety of elements and often several representational choices for the same semantics. This raises the question of how well modelers can deal with these choices. Empirical insights into BPMN use from the practitioners' perspective are still missing. To close this gap, researchers analyzed 585 BPMN 2.0 process models from six companies. They found that split and join representations, message flow, the lack of proper model decomposition, and labeling related to quality issues. They give five specific recommendations on how to avoid these issues. Y1 - 2016 U6 - https://doi.org/10.1109/MS.2015.81 SN - 0740-7459 VL - 33 IS - 4 SP - 26 EP - 33 PB - Inst. of Electr. and Electronics Engineers CY - Los Alamitos ER - TY - CHAP A1 - Schöndienst, Valentin A1 - Kulzer, Florian A1 - Günther, Oliver T1 - Like versus dislike BT - How Facebook's like-button influences people's perception of product and service quality T2 - International Conference on Information Systems : (ICIS 2012) N2 - As Facebook's Like-button has become ubiquitous, it is the purpose of this research to investigate (1) whether Likes serve as a signal of a product's or service's quality and (2) how the introduction of a Dislike-button would alter perceptions. Following a qualitative study, we conducted an experiment in which 653 participants were presented with website screenshots featuring varying levels of Likes and Dislikes. The results indicate that the theoretical framing of Likes as a Signal is valid and that people do perceive the quality of products and services as superior when they are associated with more Likes. Signaling also explains the counter-intuitive finding that Dislikes can have a positive effect on people's quality perceptions. Results are discussed with respect to theory and practical implications. Y1 - 2012 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84886484949&partnerID=MN8TOARS SP - 439 EP - 454 PB - Curran CY - Red Hook ER -