Veröffentlichungen in referierten Zeitschriften
Ellinger, E. W., Gregory, R. W., Mini, T., Widjaja, T., &Henfridsson, O. (2024). Skin in the Game: The Transformational Potential of Decentralized Autonomous Organizations. MIS Quarterly, 48(1),245-272.
Zimmermann, J., Martin, K. D., Schumann, J. H., & Widjaja, T. (2024) Consumers’ Multistage Data Control in Technology-Mediated Environments. International Journal of Research in Marketing, 41(1), 56-76.
Bidler, M., Zimmermann, J.,Schumann, J. H., & Widjaja, T. (2020). Increasing Consumers’ Willingness to Engage in Data Disclosure Processes through Relevance-illustratingGame Elements. Journal of Retailing, 96(4), 507-523.
Widjaja, T., & Gregory, R. W. (2020). Monitoring the Complexity ofITArchitectures: Design Principles and anITArtifact. Journal of the Association for Information Systems, 21(3), 4.
Krasnova, H., Widjaja, T., Buxmann, P., Wenninger, H., & Benbasat, I. (2015). Research Note - Why Following Friends Can Hurt You: An Exploratory Investigation of the Effects of Envy on Social Networking Sites among College-Age Users. Information Systems Research, 26(3), 585-605.
Gerlach, J., Widjaja, T., & Buxmann, P. (2015). Handle with Care: How Online Social Network Providers’ Privacy Policies Impact Users’ Information Sharing Behavior. Journal of Strategic Information Systems, 24(1), 33-43.
Lang, J. C., & Widjaja, T. (2013). OREX-J: Towards a Universal Software Framework for the Experimental Analysis of Optimization Algorithms. OR Spectrum, 35, 735-769.
Widjaja, T., & Buxmann, P. (2012). Kompatibilität von Softwareplattformen. Journal of Business Economics, 82(4), 141-169.
Burkard, C., Widjaja, T., & Buxmann, P. (2012). Software Ecosystems (BISE – Catchword). Business & Information Systems Engineering, 54(1), 43-47.
Becker, A., Widjaja, T., & Buxmann, P. (2011). Nutzenpotenziale und Herausforderungen des Einsatzes von Serviceorientierten Architekturen: Ergebnisse einer empirischen Untersuchung aus Anwender- und Herstellersicht. Wirtschaftsinformatik, 53, 187-199, 2011.
Referierte Konferenzbeiträge
Ghaffar, A. M., Widjaja, T. & Roider, H. (2023). Towards a Theory to Explain the Effect of Uncertainty on Prosocial Data Disclosure. Proceedings of the 44thInternational Conference on Information Systems (ICIS 2023), Hyderabad, India. (Research-in-Progress)
Ghaffar, A. M. & Widjaja, T. (2023). Towards a Theory to Explain Prosocial Data Disclosure - An Explorative Investigation of the Antecedents of Infection Disclosure. Proceedings of the 44thInternational Conference on Information Systems (ICIS 2023), Hyderabad, India.
Richthammer, M. & Widjaja, T. (2023). The Effect of Regulatory Measures on Individual Data Disclosure: a Country Comparison.Proceedings of the 31stEuropean Conference on Information Systems (ECIS 2023), Kristiansand, Norway. (Research-in-Progress)
Ghaffar, A. M. & Widjaja, T. (2023). Framing as an App-Design Measure to Nudge Users Toward Infection Disclosure in Contact-Tracing Applications. Proceedings of the 31stEuropean Conference on Information Systems (ECIS 2023), Kristiansand, Norway.
Grüner, A., Sleziona, P., Schumann, J. H. & Widjaja, T. (2023). The Influence of Firm Network Entitativity on Consumers’ Trust Perception and Data Sharing Decisions. Frontiers in Service Conference 2023, Maastricht, Netherlands.
Grüner, A., Sleziona, P., Schumann, J. H. & Widjaja, T. (2023).The Influence of Firm Network Entitativity on Consumers’ Trust Perception and Data Sharing Decisions. Proceedings of the 52ndEuropean Marketing Association Conference (EMAC 2023), Odense, Denmark.
Zimmermann, J., Schumann, J. H., Widjaja, T., & Martin, K. D. (2022). Investigating Control Perceptions inAI-based Data Disclosure Processes. SERVSIG Conference, Glasgow, United Kingdom.
Zimmermann, J., Schumann, J. H., Widjaja, T., & Martin, K. D. (2022). Investigating Control Perceptions inAI-based Data Disclosure Processes. Frontiers in Service Conference 2022, Boston, MA, USA.
Sleziona, P. & Widjaja, T. (2022). Transparency in the Privacy Context: A Structured Literature Review. Proceedings of the 30th European Conference on Information Systems (ECIS 2022), Timișoara, Romania, 124.
Overhage, S., & Widjaja, T. (2022). A Taxonomy of Forks in the Context of Decentralized Autonomous Organizations. Proceedings of the 30th European Conference on Information Systems (ECIS 2022), Timișoara, Romania, 77.
Postel, L., Schumann, J. H., & Widjaja, T. (2022).Stage-Dependent Customer Engagement in Dual-Stage Data Disclosure Decisions: An Evaluation of Affective versus Cognitive Appeals. Proceedings of the51st European Marketing Association Conference (EMAC 2022), Budapest, Hungary.
Zimmermann, J., Schumann, J. H., Widjaja, T., & Martin, K. D. (2022).Investigating Control Perceptions inAI-based Data Disclosure Processes. Proceedings of the 51st European Marketing Association Conference (EMAC 2022), Budapest, Hungary.
Mini, T., Ellinger, E. W., Gregory, R. W., & Widjaja, T. (2021). An Exploration of Governing viaITin Decentralized Autonomous Organizations. Proceedings of the 42nd International Conference on Information Systems (ICIS 2021), Austin, Texas, USA.
Bidler, M., Zimmermann, J., Schumann, J. H., & Widjaja, T. (2020). Here is How Your Data Help Us Personalize Our Offers to You: Previewing a Meaningfully Gamified Data Disclosure Process to Increase Consumers’ Willingness to Engage in Data Disclosure Processes. Proceedings of the 49th European Marketing Academy Conference (EMAC 2020), Budapest, Hungary. (cancelled due to COVID-19)
Bidler, M., Schumann, J. H., Widjaja, T., & Zimmermann, J. (2020). Aligning the Data Disclosure Process with Customer Benefits: Employing a Meaningfully Gamified Data Disclosure Process to Increase Data Disclosure Intentions for Personalization Purposes. 2020 AMA Winter Academic Conference, San Diego, CA, USA.
Mini, T., & Widjaja, T. (2019). Tensions in Digital Platform Business Models: A Literature Review. Proceedings of the 40th International Conference on Information Systems (ICIS 2019), Munich, Germany.
Bidler, M., Schumann, J. H., & Widjaja, T. (2019). Data Disclosure in Business Network Data Exchange Settings: Introducing a Dual Processing Model to Privacy Calculus Theory. Proceedings of the 48th European Marketing Association Conference (EMAC 2019), Hamburg, Germany.
Steudner, T., Widjaja, T., & Schumann, J. H. (2019). An Exploratory Study of Risk Perception for Data Disclosure to a Network of Firms. Proceedings of the 14th International Conference on Wirtschaftsinformatik, Siegen, Germany. In:Ludwig, T., Pipek, V. (ed.):Human Practice. Digital Ecologies. Our Future. Siegen Acacemic Press, 1352-1357.
Stoffer T., Widjaja T., & Zacharias N. (2018). The Diverging Effect of Digitalization on Perceived Relational Conflict during Service Provisions – An Empirical Comparison of Suppliers and Customers in the B2B Context. Proceedings of the 39th International Conference on Information Systems (ICIS2018), San Francisco, USA. (Research in Progress)
Stoffer T., Widjaja T., & Zacharias N. (2018). The Effect of Service Modularity on Flexibility in the Digital Age – An Investigation in the B2B Context. InExploring Service Science: 9th International Conference, IESS 2018, Karlsruhe, Germany, September 19–21, 2018, Proceedings 9(pp. 3-15). Springer International Publishing. (Best Paper Award)
Bidler, M., Schumann, J. H., & Widjaja, T. (2018). Challenging the Cognitive Privacy Calculus: Affective Reactions in Consumers' Privacy-Related Decision Making. SERVSIG Conference, Paris, France.
Bidler, M., Schumann, J. H., & Widjaja, T. (2018).Challenging the Cognitive Privacy Calculus: Affective Reactions in Consumers' Privacy-Related Decision Making. Proceedings of the 47th European Marketing Academy Conference (EMAC 2018), Glasgow, United Kingdom.
Engelbrecht, A., Gerlach, J., Widjaja, T., & Buxmann, P. (2017). The Nature of Enterprise-Service-Fit in the Context of Digital Services. Proceedings of the 38th International Conference on Information Systems (ICIS 2017), Seoul, South Korea.(Nominated for the Best Theory Development Award)
Becker, M., Matt, C., Widjaja, T., & Hess, T. (2017). Understanding Privacy Risk Perceptions of Consumer Health Wearables – An Empirical Taxonomy.Proceedings of the 38th International Conference on Information Systems (ICIS 2017), Seoul, South Korea.
Brakemeier, H., Widjaja, T., & Buxmann, P. (2016).Distinguishing Usage and Disclosure Intentions in Privacy Research: How our Two Selves Bring About Differences in the Effects of Benefits and Risks. Proceedings of the 24th European Conference on Information Systems (ECIS 2016), Istanbul, Turkey.
Engelbrecht, A., Gerlach, J., & Widjaja, T. (2016). Understanding the Anatomy of Data-Driven Business Models - Towards an Empirical Taxonomy. Proceedings of the 24th European Conference on Information Systems (ECIS 2016), Istanbul, Turkey.
Brakemeier, H., Widjaja, T., & Buxmann, P. (2016). Calculating with Different Goals in Mind - The Moderating Role of the Regulatory Focus in the Privacy Calculus. Proceedings of the 24th European Conference on Information Systems (ECIS 2016), Istanbul, Turkey.
Widjaja, T. (2014). Der kostenoptimale Grad funktionaler Redundanz inIT-Anwendungslandschaften. Lecture Notes in Informatics (LNI), Tagungsband Informatik 2014, Stuttgart, Germany.
Loske, A., Widjaja, T., Benlian, A., & Buxmann, P. (2014). PerceivedITSecurity Risk in Cloud Adoption: The Role of Perceptual Incongruence Between Users and Providers. Proceedings of the 22nd European Conference on Information Systems (ECIS2014), Tel Aviv, Israel.(Nominated for the Best Paper Award)
Schütz, A., Widjaja, T., & Gregory, R. W. (2013). Escape From Winchester Mansion – Toward a Set of Design Principles to Master Complexity inITArchitectures. Proceedings of the 34th International Conference on Information Systems (ICIS2013), Milan, Italy.
Kaiser, J., Widjaja, T., & Buxmann, P. (2013). Unfolding Dyadic Dependencies in IS Outsourcing Relationships – Development of Two Multidimensional Constructs.
Proceedings of the 34th International Conference on Information Systems (ICIS2013), Milan, Italy. (Research in Progress)
Loske, A., Widjaja, T., & Buxmann, P. (2013). Cloud Computing Providers’ Unrealistic Optimism regardingITSecurity Risks: A Threat to Users?. Proceedings of the 34th International Conference on Information Systems (ICIS2013), Milan, Italy.
Eling, N., Krasnova, H., Widjaja, T., & Buxmann, P. (2013). Will You Accept an App? Empirical Investigation of the Decisional Calculus Behind the Adoption of Applications on Facebook. Proceedings of the 34th International Conference on Information Systems (ICIS2013), Milan, Italy.
Kaiser, J., Widjaja, T., & Buxmann, P. (2013). Relative and Joint Dependence in IS Outsourcing Relationships – A Model of Effects on Relational Facets and Exchange Performance. In advances in Global Sourcing. Models, Governance, and Relationships. 7th Global Sourcing Workshop. 2013, Val d’Isère, France, Revised Selected Papers, 7,18-34. Springer Berlin Heidelberg.
Schmidt, C., Widjaja, T., & Schütz, A. (2013). Quantifizierung der Komplexität vonIT-Landschaften: Ein systemtheoretischer Ansatz und dessen Anwendung im Rahmen der Architekturtransformation. Lecture Notes in Informatics (LNI), Tagungsband Informatik 2013, Koblenz, Germany.
Schütz, A., Widjaja, T., & Kaiser, J. (2013). Complexity in Enterprise Architectures - Conceptualization and Introduction of a Measure from a System Theoretic Perspective. Proceedings of the 21st European Conference on Information Systems (ECIS2013), Utrecht, Holland.
Krasnova, H.,Eling, N., Schneider, O.,Wenninger, H.,Widjaja, T., &Buxmann, P. (2013).Does This App Ask for Too Much Data? The Role of Privacy Perceptions in User Behavior Towards Facebook Applications and Permission Dialogs.Proceedings of the 21st European Conference on Information Systems (ECIS2013), Utrecht, Holland.
Loske, A., Widjaja, T., & Buxmann, P. (2013). Unrealistischer Optimismus der Cloud Computing Anbieter bezüglichITSicherheitsrisiken – Eine Bedrohung für die Nutzer? Tagungsband der 11. Internationalen Tagung Wirtschaftsinformatik 2013 (WI2013), Leipzig, Germany.
Krasnova, H., Wenninger, H., Widjaja, T., & Buxmann, P. (2013). Envy on Facebook: A Hidden Threat to Users’ Life Satisfaction? Tagungsband der 11. Internationalen Tagung Wirtschaftsinformatik 2013 (WI2013), Leipzig, Germany. (Gewinner des Best-Paper-Awards)
Schütz, A., Widjaja, T., & Kaiser, J. (2013). Komplexität in Enterprise Architectures – Konzeptualisierung und Entwicklung einer Kennzahl aus systemtheoretischer Perspektive. Tagungsband der 11. Internationalen Tagung Wirtschaftsinformatik 2013 (WI2013), Leipzig, Germany.
Ackermann, T.,Widjaja, T., &Buxmann, P. (2013).Towards the Optimal Security Level: Quantification of Risks in Service-Based Information Systems.Proceedings of the 46th Hawaii International Conference on System Sciences (HICSS 2013), Hawaii, USA.
Kaiser, J.,Widjaja, T., & Buxmann, P. (2013).A Two-Sided Perspective on Supplier Dependence in IS Outsourcing Dyads.Proceedings of the 46th Hawaii International Conference on System Sciences (HICSS 2013), Hawaii, USA.
Draisbach, T., Widjaja, T., & Buxmann, P. (2013):Lock-ins in Network Effect Markets – Results of a Simulation Study.Proceedings of the 46th Hawaii International Conference on System Sciences (HICSS 2013), Hawaii, USA.
Widjaja, T., Kaiser, J., Tepel, T., & Buxmann, P. (2012). Heterogeneity inITLandscapes and Monopoly Power of Firms: A Model to Quantify Heterogeneity. Proceedings of the 33rd International Conference on Information Systems (ICIS2012), Orlando, Florida, USA. (Nominated for the Best Paper Award)
Widjaja, T., & Gregory, R. (2012). Design Principles for Heterogeneity Decisions in Enterprise Architecture Management. Proceedings of the 33rd International Conference on Information Systems (ICIS2012), Orlando, Florida, USA.(Research in Progress)
Kaiser, J., Widjaja, T., & Buxmann, P. (2012). Positioning Clients in Dyadic Dependence Structures of IS Outsourcing Relationships – Conceptualization and Empirical Findings. Proceedings of the 33rd International Conference on Information Systems (ICIS2012), Orlando, Florida, USA.
Ackermann, T., Widjaja, T., Benlian, A., & Buxmann, P. (2012). PerceivedITSecurity Risks of Cloud Computing: Conceptualization and Scale Development. Proceedings of the 33rd International Conference on Information Systems (ICIS2012), Orlando, Florida, USA.
Kaiser, J.,Widjaja, T., &Buxmann, P. (2012).Analyzing Client Dependence in Dyadic IS Outsourcing Relationship. In The Dynamics of Global Sourcing. Perspectives and Practices: 6th Global Sourcing Workshop 2012, Courchevel, France, Revised Selected Papers, 6, 1-19. Springer Berlin Heidelberg.
puss*p, A., Schief, M., & Widjaja, T. (2012). The Software Value Chain: Methods for Construction and Their Application. Proceedings of the 20th European Conference on Information Systems (ECIS2012), Barcelona, Spain.
Draisbach, T., Widjaja, T., & Buxmann, P. (2012). Lock-Ins auf Netzeffektmärkten – Ergebnisse einer Simulationsstudie. Tagungsband der Multikonferenz Wirtschaftsinformatik (MKWI 2012), Braunschweig, Germany.
Burkard, C., Draisbach, T., Widjaja, T., & Buxmann, P. (2011). Software Ecosystems: Vendor-Sided Characteristics of Online Marketplaces. Lecture Notes in Informatics (LNI, Tagungsband Informatik 2011, Berlin.
puss*p, A., Schief, M,Widjaja, T.,Buxmann, P., &Wolf, C. M. (2011).The Software Value Chain as an Analytical Framework for the Software Industry and its Exemplary Application for Vertical Integration Measurement.Proceedings of the 17th American Conference on Information Systems (AMCIS 2011), Detroit, USA.
Ackermann, T., Widjaja, T., & Buxmann, P. (2009). Increasing the Diffusion of Communication Standards – A General Simulation Framework from the Vendor’s Perspective. Proceedings of the 6th International Conference on Standardization and Innovation in Information Technology (SIIT 2009), 76-91, Tokyo, Japan.
Widjaja, T., & Buxmann, P. (2009). Service-oriented Architectures: Modeling the Selection of Services and Platforms. Proceedings of the 17th European Conference on Information Systems (ECIS2009), Verona, Italy, 2009.
Becker, A., Buxmann, P., & Widjaja, T. (2009). Value Potential and Challenges of Service-oriented Architectures – A User and Vendor Perspective. Proceedings of the 17th European Conference on Information Systems (ECIS2009), Verona, Italy.
Becker, A., Buxmann, P., & Widjaja, T. (2008). Nutzenpotenziale von Serviceorientierten Architekturen – Ergebnisse einer Expertenbefragung. Tagungsband des dritten Workshops zu Bewertungsaspekten Serviceorientierter Architekturen (BSOA 2008), Leinfelden, Germany.
Lang, J. C., Widjaja, T, Buxmann, P., Domschke, W., & Hess, T. (2008): Optimizing the Supplier Selection and Service Portfolio of a SOA Service Integrator. Proceedings of the 41st Hawaii International Conference on System Sciences (HICSS 2008), Hawaii, USA.
Rößling, G., Gliesche, F., Jajeh, T., & Widjaja, T. (2004). Enhanced Expressiveness in Scripting Using AnimalScript V2. Proceedings of the 3rd International Program Visualization Workshop, Warwick, England. Ari Korhonen, 10-17.
Monographien
Widjaja, T. (2011). Standardisierungsentscheidungen in mehrschichtigen Systemen: Untersuchung am Beispiel serviceorientierter Architekturen. Gabler-Verlag, Wiesbaden, Germany.
Sonstige Veröffentlichungen
Hennemann, M., v. Lewinski, K. Wawra, D., & Widjaja, T. (Hrsg.). (2023). Data Disclosure - Global Developments and Perspectives, De Gruyter, Berlin 2023, Germany.
Richthammer, M., & Widjaja, T. (2023). Vectors of Data Disclosure – The Information Systems Perspective, in: Hennemann, M. et al. (Hrsg.), Data Disclosure – Global Developments and Perspectives, De Gruyter, Berlin 2023, Germany.
Mini, T., Widjaja, T., & Gregory, R. (2020). Autonomy and Alignment in Platform-Based Meta-Organizations: A Qualitative Meta-Analysis. 1st AIS SIG DITE Paper Development Workshop. (Working Paper)
Bidler, M., Steudner, T., Schumann, J. H., & Widjaja, T. (2019). Kundenwahrnehmungen und Kundenverhalten beim Bezahlen von digitalen Dienstleistungen mit persönlichen Daten. Handbuch Datenrecht und Digitalisierung. Erich Schmidt Verlag Berlin.
Strahringer, S., & Widjaja, T. (2017). HMD Praxis der Wirtschaftsinformatik:IT-Management undIT-Strategie, 54. Springer Verlag, Wiesbaden, Germany.
Buxmann, P., Kaiser, J., & Widjaja, T. (2013). Die zehn Faktoren der Abhängigkeit des Kunden inIT-Outsourcing-Beziehungen. Lünendonk HandbuchIT-Consulting 2013, Fakten & Köpfe Verlagsgesellschaft, Kelsterbach, 50-63.
Wenninger, H.,Widjaja, T.,Buxmann, P., &Gerlach, J. (2012).Der Preis des Kostenlosen.Wirtschaftsinformatik & Management, 12(6), 12-19.
Widjaja, T., Langenbach-Kuttert, B., & Buxmann, P. (2012). Strategisches Management heterogenerIT-Landschaften. INFORM, 12(2), 2012.
Hilkert, D., Burkard, C., Widjaja, T., Hess, T., & Buxmann, P. (2011). Plattformoffenheit – Implikationen für Anbieter von Mobile Business App. Smart Mobile Apps, Springer, Berlin.
Widjaja, T., & Buxmann, P. (2012). Compatibility of Software Platforms. Theory-Guided Modeling and Empiricism in Information Systems Research. Physica-Verlag, Heidelberg, Germany. (Based on: Widjaja, Buxmann 2012)
Widjaja, T., & Buxmann, P. (2009). Service-oriented Architectures: Modeling the Selection of Services and Platforms. Software-as-a-Service (SaaS) – Anbieterstrategien, Kundenbedürfnisse und Wertschöpfungsstrukturen, Gabler-Verlag, Wiesbaden, Germany. (Based on: Widjaja, Buxmann 2009)
Langer, K., Voigtmann, A., & Widjaja, T. (2008). SOA-basierte Partnernetzwerke. ManageIT, 1(2), 16-21).
Buxmann, P., Hess, T., & Widjaja, T. (2007). Serviceorientierte Architekturen: Grundlagen und Ansätze zur ökonomischen Bewertung aus Perspektive der Software-Industrie. WiSU das Wirtschaftsstudium, 10, 1316-1327.
