Chair of Internet and Telecommunications Business
Research

Research

The Chair's research activities focus on the analysis of firms as well as the design of markets and services in the Internet and telecommunications industry. Our research addresses technical, strategic, economic as well as policy questions and employs an interdisciplinary pluralism of methods, tailored to best address the respective research question.

Area of research

The area of research of the Chair is inherently interdisciplinary, because it is located in the triad of economics, computer science and law.

Due to the importance of the Internet and telecommunications industry for social and economic activities, our research enjoys high practical relevance and presence. Therefore, the Chair takes an active part in the public discussion and the exchange of knowledge with industry partners. Thereby, the research of the Chair is able to combine academic rigor with practical relevance. Due to this fact our research is funded, both by government institutions (e.g., the German research foundation (DFG)) as well as by industry partners within the framework of cooperation projects. Moreover, our research is regularly published by the most prestigious scientific journals (e.g., Information Systems Research or Management Science).

Research Topics

Focus Areas:

  1. Economics and Regulation of the Internet and data economy (e.g., on data-sharing agreements)
  2. Economics and Regulation of the Internet-ecosystem (e.g., on net neutrality)
  3. Competition and investment in telecommunications networks (e.g., incentives to invest in Next-Generation-Networks)
  4. Design and perception of electronic markets and services (e.g., design of Internet auctions)

Furthermore, the chair is interested in research topics that address the intelligent use of information and communication technology to empower the efficient and sustainable use of natural resources (e.g., smart metering).    

Research Methods

In our research, we predominantly employ quantitative methods from economics (e.g., game-theoretical modelling, experimental economics) as well as quantitative methods from computer science (e.g., (agent-based) simulation or data mining). Depending on the research question, these methodical approaches are enriched by approaches and theories of neighboring disciplines, such as mathematics (e.g., Operations Research), psychology (e.g. psychometric and psychophysiological measurements) and law (e.g., telecommunications and competition law).

For an overview of our research approach, understanding of theory development, and philosophy of science, please refer to this article, which has been published as 
Krämer, J., & Schnurr, D. (2016).
Microeconomically Founded Information Systems Research. In M. Bichler & U. Frank (Eds.), Theories in Business and Information Systems Engineering. Business & Information Systems Engineering, 58(4), 291-319. doi:10.1007/s12599-016-0439-z

Publications

Data Economy and Regulation

Krämer, J. (2018). 
Datenschutz 2.0 – ökonomische Auswirkungen von Datenportabilität im Zeitalter des Datenkapitalismus. In: Tobias Kretschmer, Lukas Wiewiorra, Jan Krämer, Andreas Oehler, Matthias Horn, Justus Haucap, Stefan Klein, Joschka Hüllmann: Zeitgespräch: Datenkapitalismus – eine ökonomische Betrachtung. Wirtschaftsdienst 98(7), 459-480.

Krämer, J., & Schnurr, D. (2018).
Is there a need for platform regulation in the EU? Telecommunications Policy, 42(7), 514-529. doi:10.1016/j.telpol.2018.06.004 [JQ3: C; IF: 2.087; ABS: Grade 1; HB: 0.15]

Easley, R., Guo, H., & Krämer, J. (2018).
From Network Neutrality to Data Neutrality: A Techno-Economic Framework and Research Agenda. Information Systems Research, 29(2), 253-272. doi:10.1287/isre.2017.0740 [JQ3: A+; IF: 2.301; ABS: Grade 4*; HB: 1]

Krämer, J., Schnurr, D., & Wohlfarth, M. (2018).
Winners, Losers, and Facebook: The Role of Social Logins in the Online Advertising Ecosystem, Management Science, forthcoming  https://doi.org/10.1287/mnsc.2017.3012 [JQ3: A+; IF: 3.544; ABS: Grade 4*; HB: 1]

Krämer, J., & Wohlfarth, M. (2018).
Market power, regulatory convergence, and the role of data in digital markets. Telecommunications Policy, 42(2). 154-171. doi:10.1016/j.telpol.2017.10.004 [JQ3: C; IF: 2.087; ABS: Grade 1; HB: 0.15]

Wohlfarth, M. (2017).
Data Portability on the Internet: An Economic Analysis. Proceedings of International Conference on Information Systems (ICIS 2017), Seoul, South Korea, 2017, forthcoming. [JQ3: A]
(nominate for best theory paper award) 

Regulation of the Internet-ecosystem, in particular net neutrality

Krämer, J., & Peitz, M. (2018).
A Fresh Look at Zero-Rating. Telecommunications Policy, 42(7), 501-513. doi:10.1016/j.telpol.2018.06.005 [JQ3: C; IF: 2.087; ABS: Grade 1; HB: 0.15]

Krämer, J., & Schnurr, D. (2018).
Is there a need for platform regulation in the EU? Telecommunications Policy, 42(7), 514-529. doi:10.1016/j.telpol.2018.06.004 [JQ3: C; IF: 2.087; ABS: Grade 1; HB: 0.15]

Easley, R., Guo, H., & Krämer, J. (2018).
From Network Neutrality to Data Neutrality: A Techno-Economic Framework and Research Agenda. Information Systems Research 29(2), 253-272  doi:10.1287/isre.2017.0740 [JQ3: A+; IF: 2.301; ABS: Grade 4*; HB: 1]

Krämer, J, & Wohlfarth, M. (2015).
Regulating Over-the-Top Service Providers in Two-Sided Content Markets: Insights from the Economic Literature. Communications & Strategies 99, 51-71. 

Kourandi, F., Krämer, J., & Valletti, T. (2015).
Net Neutrality, Exclusivity Contracts and Internet Fragmentation. Information Systems Research 26(2), 320-338. doi:10.1287/isre.2015.0567 [JQ3: A+; IF: 2.301; ABS: Grade 4*; HB: 1]

Krämer, J., Wiewiorra, L., & Weinhardt, C. (2013).
Net Neutrality: A Progress Report. Telecommunications Policy 37(9), 794–813. doi:10.1016/j.telpol.2012.08.005 [JQ3: C; IF: 2.087; ABS: Grade 1; HB: 0.15]
Most cited article in Telecommunications Policy since 2013

Krämer, J., & Wiewiorra, L. (2012).
Network Neutrality and Congestion Sensitive Content Providers: Implications for Content Variety, Broadband Investment and Regulation. Information Systems Research 23(4), 1303-1321. doi:10.1287/isre.1120.0420 [JQ3: A+; IF: 2.301; ABS: Grade 4*; HB: 1] 
Winner of the VHB-Nachwuchspreises 2013

Krämer, J., Wiewiorra, L., & Weinhardt, C. (2012).
Net Neutrality in the United States and Europe. CPI Antitrust Chronicle 3(2), Article 3.

Krämer, J. (2013).
Tariffication, Prioritization and Regulation: Eight Essays on Telecommunications Markets. Unveröffentlichte Habilitationsschrift. Karlsruhe Institute of Technology. 250 p.

Spiecker gen. Döhmann, I., & Krämer, J. (eds.). (2011).
Network Neutrality and Open Access. Baden Baden: Nomos Verlag. 214 p.
[Buchbesprechung durch Hunziker, M. in Archiv für Urheber- und Medienrecht (UFITA), 2012(2), 604-606]

Design and Perception of Electronic Markets, in particular Internet-Auctions

Müller, M., Adam, M. T. P., Cornforth, D., Chiong, R., Krämer, J., & Weinhardt, C. (2016).
Selecting Phyiological Features for Predicting Bidding Behavior in Electronic AuctionsProceedings of the 49th Hawaii International Conference on System Sciences (HICSS 2016). (Kauai, Hawaii, USA). 
[JQ3: C]

Astor, P., Adam, M. T. P., & Krämer, J. (2016).

Affective Images, Emotion Regulation and Auction Behavior: A Psychophysiological Experiment on the Role of Unconscious Emotional Processes in Internet Auctions, Journal of Interactive Marketing 35, 56-59. [JQ3: B, IF: 3.864; ABS: Grade 3; HB: 0.4]

Adam, M. T. P., Krämer, J., & Müller, M. (2015).
Auction Fever! How time pressure and social competition affect bidders’ arousal and bids in retail auctions. Journal of Retailing, 91, 468-485 doi:10.1016/j.jretai.2015.01.003 [JQ3: A, IF: 5.480; ABS: Grade 4; HB: 0.7]

Adam, M.T.P., Krämer, J., & Weinhardt, C. (2012).
Excitement up! Price Down! Measuring Emotions in Dutch Auctions. International Journal of Electronic Commerce 17(2), 7-39. doi:10.2753/JEC1086-4415170201 [JQ3: B; IF: 2.514; ABS: Grade 3; HB: 0.5]

Adam, M. T. P., Krämer, J., Jähnig, C., Seifert, S., & Weinhardt, C. (2011).
Understanding Auction Fever: A Framework for Emotional Bidding. Electronic Markets 21(3), 197-207. doi:10.1007/s12525-011-0068-9 [JQ3: B; IF: 3.818; ABS: Grade 2; HB: 0.1]

Astor, P. J., Adam, M. T. P., & Krämer, J. (2012).
Influence of emotional pictures on bidding behavior. In: Smidts, A., Sanfey, A., Reimann, M., & Schilke, O. (eds.), Proceedings of the 2012 NeuroPsychoEconomics Conference. (Rotterdam, Netherlands), 18

Adam, M. T. P., Gamer, M., Krämer, J., & Weinhardt, C. (2011)
Measuring Emotions in Electronic Markets. Proceedings of the International Conference on Information Systems 2011 (ICIS). (Shanghai, China). Paper 1. [JQ3: A]

Adam, M. T. P., Krämer, J., Weinhardt, C., & Ehrhart, K.-M. (2010).
Investigating Auction Fever. In: Dreier, T., Krämer, J., Studer, R., & Weinhardt, C. (eds.), Information Management and Market Engineering: Vol. II. Studies on eOrganisation and Market Engineering. Karlsruhe: KIT Scientific Publishing, 141-157.

Design and Perception of Electronic Services, in particular Telecommunications Tariffs

Krämer, J, & Wiewiorra, L. (2015).
When 'just' is just not enough: Why consumers do not appreciate non-neutral Internet access services. Business and Information Systems Engineering, 57(5), 325-338. doi:10.1007/s12599-015-0398-9 [JQ3: B; ABS: Grade 2; IF: 2.596; HB: 0.2]

Köhler, P., Krämer, J., & Krüger, L. (2014).
Optimal Choice and Consumption of Cost Cap Tariffs: Theory and Empirical Evidence.
Business Research 7(1), 161–190. doi:10.1007/s40685-014-0007-7 [JQ3: B]

Krämer, J., & Wiewiorra, L. (2014).
Data Caps and Two-Sided Pricing: Evaluating Managed Service Business Models. Proceedings of the 22nd European Conference on Information Systems (ECIS 2014). (Tel Aviv, Israel). [JQ3: B]

Elsner, H., & Krämer, J. (2013).
Managing Corporate Portal Usage with Recommender Systems. Business and Information Systems Engineering 5(4), 213-225. doi:10.1007/s12599-013-0275-3 [JQ3: B; ABS: Grade 2; IF: 2.596; HB: 0.2]

Elsner, H., & Krämer, J. (2013).
Nutzungsmanagement von Unternehmensportalen mithilfe von Empfehlungssystemen. Wirtschaftsinformatik 55(4), 205-219. doi:10.1007/s11576-013-0370-6 [JQ3: B; IF: 2.596; HB: 0.2]

Krämer, J., & Wiewiorra, L. (2012).
Beyond the Flat Rate Bias: The Flexibility Effect in Tariff Choice. Telecommunications Policy 36(1), 29-39. doi:10.1016/j.telpol.2011.11.015 [JQ3: C; IF: 2.087; ABS: Grade 1; HB: 0.15]

Krämer, J., & Wiewiorra, L. (2010).
The Taxi Meter Effect: An Experimental Approach. in: de Vreede, G. (ed.), Group Decision and Negotiation 2010. (Delft, Netherlands), 228-231.

Köhler, P., Krämer, J., & Anandasivam, A. (2010).
Cloud Computing: New Business Opportunities for Telecommunications Companies?. Proceedings of the 2010 European Regional ITS Conference. (Copenhagen, Denmark)

Krämer, J., & Wiewiorra, L. (2010).
Consumer Perception of Mobile Telephony Tariffs with Cost Caps. Proceedings of the 9th Conference on Telecommunication, Media and Internet Techno-Economics (CTTE). (Ghent, Belgium). IEEE Xplore, 1-8. doi:10.1109/ctte.2010.5557703 [Best Paper Award Runner Up] 

Elsner, H., & Krämer, J. (2010).
Einsatz von Recommender Systemen zum Management von Unternehmensportalen. In: Schumann, M., Kolbe, L., Breitner, M., & Friedrichs, A. (eds.), Multikonferenz Wirtschafsinformatik 2010. Universitätsverlag Göttingen. 1819-1830. [JQ3: D] 

Krämer, J., Conte, T., Blau, B., van Dinther, C., & Weinhardt, C. (2010).
Service Value Networks: Unleashing the Combinatorial Power of Service Mashups. Working Paper, Karlsruhe Institute of Technology.
http://ssrn.com/abstract=1582902

Blau, B., Krämer, J., Conte, T., & van Dinther, C. (2009).
Service Value Networks. in: Hofreiter, B.; Werthner, H. (eds.), Proceedings of the 11th IEEE Conference on Commerce and Enterprise Computing (Vienna, Austria) IEEE Computer Society. 194-201. doi:10.1109/CEC.2009.64 

Krämer, J. (2013).
Deutsche Telekom: Sind Fair-Use-Flatrates wirklich fair? Wirtschaftsdienst 93(5). 282. Kommentar.

Wiewiorra, L., Krämer, J., Weinhardt, C., & Ehrhart, K.-M. (2010).
Consumer Perception of Time Based Pricing. In: Dreier, T., Krämer, J., Studer, R., & Weinhardt, C. (eds.), Information Management and Market Engineering: Vol. II. Studies on eOrganisation and Market Engineering. Karlsruhe: KIT Scientific Publishing, 179-190.

Krämer, J. (2013).
Tariffication, Prioritization and Regulation: Eight Essays on Telecommunications Markets. Unveröffentlichte Habilitationsschrift. Karlsruhe Institute of Technology. 250 p.

Regulation, Competition and Investment in Telecommunications Networks

Krämer, J., & Schnurr, D. (2018)
Margin Sqeeze Regulation and Infrastructure Competition. Information Economics and Policy, forthcoming doi.org/10.1016/j.infoecopol.2018.09.001 [IF: 0.980; ABS: Grade 1; HB: 0.15]

Krämer, J. (2018).
Ausbau der digitalen Infrastruktur bis 2025: Welche Wege führen in die ›Gigabit-Gesellschaft‹?. In Homann, J., Gerpott, T. J., Briglauer, W., Vogelsang, I., Krämer, J., Henseler-Unger, I., & Wiewiorra, L., ifo Schnelldienst 71(07), 03–21.

Horstmann, N., Krämer, J., & Schnurr, D. (2018).
Number Effects and Tacit Collusion in Experimental Oligopolies, Journal of Industrial Economics, forthcoming. Working Paper [JQ3: A; IF: 1.036; ABS: Grade 3; HB: 0.3]

Krämer, J., & Vogelsang, I. (2017).
Co-Investments and Tacit Collusion in Regulated Network Industries: Experimental Evidence. Working Paper. Review of Network Economics 15(1), 35-61 http://ssrn.com/abstract=2119927 [IF: 0.357; ABS: Grade2; HB: 0.15]

Horstmann, N., Krämer, J., & Schnurr, D. (2016).
Wholesale Competition, Open Access Regulation and Tacit Collusion: Experimental Evidence
http://ssrn.com/abstract=2630660

Horstmann, N., Krämer, J., & Schnurr, D. (2015).
Oligopoly Competition in Continuous Time
http://ssrn.com/abstract=2630664

Krämer, J., & Schnurr, D. (2014).
A Unified Framework for Open Access Regulation of Telecommunications Infrastructure: Review of the Economic Literature and Policy Guidelines. Telecommunications Policy, 38(11), 1160–1179. doi:10.1016/j.telpol.2014.06.006 [JQ3: C; IF: 2.087; ABS: Grade 1; HB: 0.15]

Horstmann, N., & Krämer, J. (2014).
Tacit collusion under multimarket contact with identical firms and markets. Mimeo. Presented under the title "Price Signaling and Tacit Collusion under Multimarket Contact" at the 41st Annual Conference of the European Association for Research in Industrial Economics (EARIE) in Milan, Italy, 2014. http://ssrn.com/abstract=2469452

Horstmann, N., & Krämer, J. (2013).
Price Discrimination or Uniform Pricing: Which Colludes More? Economics Letters, 120(3), 397–383. doi:10.1016/j.econlet.2013.05.011 [JQ3: B; IF: 0.581; ABS: Grade 3; HB: 0.5]

Krämer, J. (2009).
Bundling Vertically Differentiated Communications Services to Leverage Market Power. info: The journal for policy, regulation and strategy for telecommunications, information and media, 11(3), 64-74. doi:10.1108/14636690910954980

Krämer, J. (2007).
Digital Convergence, Pricing Strategies and Firms' Profits in the Telecommunication and Entertainment Media Industry. Proceedings of the 6th Conference on Telecommunication, Media and Internet Techno-Economics (CTTE). (Helsinki, Finland). IEEE Xplore, 1-8. doi:10.1109/CTTE.2007.4389896

Krämer, J., Berninghaus, S., & Weinhardt, C. (2006).
Competing on Many Fronts: Entry Networks in an Economy of Multi-Product Firms. In: Dreier, T., Studer, R., & Weinhardt, C. (eds.), Information Management and Market Engineering. Studies on eOrganisation and Market Engineering. Universitätsverlag Karlsruhe. 139-151.

Krämer, J. (2013).
Tariffication, Prioritization and Regulation: Eight Essays on Telecommunications Markets. Unveröffentlichte Habilitationsschrift. Karlsruhe Institute of Technology. 250 p.

Spiecker gen. Döhmann, I., & Krämer, J. (eds.). (2011).
Network Neutrality and Open Access. Baden Baden: Nomos Verlag. 214 p.
[Buchbesprechung durch Hunziker, M. in Archiv für Urheber- und Medienrecht (UFITA), 2012(2), 604-606]

Krämer, J., & Seifert, S. (eds.). (2009).
Communications Regulation in the Age of Digital Convergence: Legal and Economic Perspectives. Karlsruhe: Universitätsverlag Karlsruhe. 110 p.

Krämer, J. (2009).
Bundling Telecommunications Services: Competitive Strategies for Converging Markets. Karlsruhe: Universitätsverlag Karlsruhe. 174 p.

Energy and Environment

Feige, C., Ehrhart, K.-M., & Krämer, J. (2018).
Climate Negotiations in the Lab: A Threshold Public Goods Game with Heterogeneous Contributions Costs and Non-binding Voting. Environmental and Resource Economics, 70(2), 343-362. doi:10.1007/s10640-017-0123-x [IF: 1.961; ABS: Grade 3; HB: 0.3]

Dalen, A., & Krämer, J. (2016).
Towards a user-centered feedback design for smart meter interfaces to support efficient energy-use choices: A design science approach. Business & Information Systems Engineering / Wirtschaftsinformatik, 59(5), 361-373. 
[JQ3: B; IF: 2.596; ABS: Grade 2; HB: 0.2]

Dalen, A., Krämer, J., & Weinhardt, C. (2013).
Determining the Optimal Level of Information Granularity for Efficient Energy Consumption Decisions: Experimental Evidence. Proceedings of the 21st European Conference on Information Systems (ECIS 2013). (Utrecht, Netherlands). Paper 201. [JQ3: B]

Ilg, J., Flath, C., & Krämer, J. (2012).
A Note on the Economics of Metered Grid Pricing. Proceedings of the 9th International Conference on the European Energy Market (EEM).(Florence, Italy). IEEE Xplore, 1-6.

Publications on other topics

Mazarakis, A., & Krämer, J. (2010).
Feedbackmechanismen zur Steigerung der Beteiligung im Web 2.0–Ergebnisse einer Feldstudie zu Vorlesungswikis. in: Schroeder, U. (ed.), Interaktive Kulturen- Workshop-Band. (Duisburg, Germany) Proceedings der Workshops der DeLFI 2010 - Die 8. E-Learning Fachtagung Informatik der Gesellschaft für Informatik e. V. Berlin: Logos Verlag. 187-192.

Seifert, S., Krämer, J., & Mazarakis, A. (2010).
Anreize zur Nutzung von Wikis in der Hochschullehre - Ergebnisse eines Pilotprojekts. in: Ziegler, J.; Schmidt, A. (eds.), Mensch & Computer 2010. (Duisburg, Germany). München: Oldenbourg Wissenschaftsverlag. 179-188

Dreier, T., Krämer, J., Studer, R., & Weinhardt, C. (eds.). (2010).
Information Management and Market Engineering: Vol. II. Studies on eOrganisation and Market Engineering. No. 11. Karlsruhe: KIT Scientific Publishing. 260 p.

Krämer, A., & Krämer, J. (2010).
Flexibility of Delivery Frequency in Logistics Competition. Working Paper, Karlsruhe Institute of Technology.
http://ssrn.com/abstract=1583015

Krämer, J. (2009).
The Conference Scheduling Problem. Saarbrücken: VDM Verlag. 160 p.

News

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