Stefan Koch - Forschung (Research)

Inhalt (Contents)

• Forschungsgebiete (Research Areas)
• Publikationen (Publications)
• Wissenschaftliche Vorträge (Talks)
• Projekte (Research and Industry Projects)
• Sonstige wissenschaftliche Tätigkeiten (Professional Activities)

Forschungsgebiete (Research Areas)

• Management of Innovation and Technology
  • Customer Involvement in Innovation
  • Mass Customization
  • Software Ecologies
• Estimation of Effort and Benefits of Information Systems
  • Software Metrics and Effort Estimation
  • Quantification of Benefits from Information Systems
  • Decision Making for Investments in ERP-Software
  • Effort Estimation for ERP-Implementations
• IT Investment Analysis and Risk Management
• Software Development Processes
  • Free/Open Source Software Development
  • Repository Design, Retrieval and Reuse of Software Process Models
• IT Governance and Sourcing
• Business Process Modelling, Workflow Management, ERP-Software,...
  • Decision Making for Investments in ERP-Software
  • Effort Estimation for ERP-Implementations
  • Open Model Approach
  • Integration of Business Process Modeling and Workflow Management
  • SAP R/3 at the Department of Information Business (Kochbuch)
• User Interface Design, Web Applications and Online Communities
  • Usability of Open Source Software Systems
  • Cooperation in Web Based Communities
  • Virtual Notes: Annotations on the WWW

Publikationen (Publications)

Books (1)

Edited Books (2)

Koch, S., ed. (2004) Free/Open Source Software Development, Idea Group Publishing, Hershey, PA.

Articles in Refereed Journals (23)

Bernroider, E., Koch, S. and Stix, V. (to appear) "A Comprehensive Framework Approach using Content, Context, Process Views to Combine Methods from Operations Research for IT Assessment", Information Systems Management.

Koch, S. (2011) "Organisation of Work in Open Source Projects: Expended Effort and Efficiency", Revue d'economie industrielle, 136(4), pp. 17-38.

Koch S., Toker, A. and Brulez, P. (2011) "Extending the Technology Acceptance Model with Perceived Community Characteristics", Information Research, 16(2).

Koch, S. and Turk, G. (2011) "Human Resource Related Problems in Agile and Traditional Software Project Process Models", International Journal of IT Project Management, 2(2), pp. 1-13.

Koch, S. (2011) "Open Source as a Sourcing Strategy for Corporations", International Journal of Business Innovation and Research, 5(1), pp. 1-16.

Koch, S. and Mitlöhner, J. (2010) "Effort Estimation for ERP Implementation Projects Using Social Choice - A Comparative Study", Enterprise Information Systems, 4(3), pp. 265-281.

Koch, S. (2009) "Exploring the Effects of SourceForge.net Coordination and Communication Tools on the Efficiency of Open Source Projects using Data Envelopment Analysis", Empirical Software Engineering, 14(4), pp. 397-417.

Koch, S. and Mitlöhner, J. (2009) "Software Project Effort Estimation with Voting Rules", Decision Support Systems, 46, pp. 895-901.

Koch, S. (2008) "Effort Modeling and Programmer Participation in Open Source Software Projects", Information Economics and Policy, 20(4), pp. 345-355.

Koch, S. (2008) "Sourcing Decisions in the Finance Sector: Current State and Focus on Economies of Scale and Knowledge Management", International Journal of Services, Economics and Management 1(2), pp. 163-182.

Koch, S. and Neumann, C. (2008) "Exploring the Effects of Process Characteristics on Product Quality in Open Source Software Development", Journal of Database Management, 19(2), pp. 31-57.

Koch, S. (2007) "Software Evolution in Open Source Projects - A Large-Scale Investigation", Journal of Software Maintenance and Evolution, 19(6), pp. 361-382.

Koch, S. (2006) "Using Value-at-Risk for IS/IT Project and Portfolio Appraisal and Risk Management", Electronic Journal of Information Systems Evaluation, 9(1), pp. 1-6.

Gonzalez-Barahona, J.M. and Koch, S. (2005) "Open Source Software Engineering - The State of Research", First Monday, Special Issue #2, 10(10).

Bernroider, E. and Koch, S. (2005) "Kennzahlenbasiertes Qualitätsmanagement in einer Outsourcing-Beziehung", HMD - Praxis der Wirtschaftsinformatik, Heft 245, pp. 76-84.

Gonzalez-Barahona, J.M. and Koch, S. (2005) "Libre Software under the Microscope", Upgrade, VI(3), pp. 2-4.

Koch, S. (2004) "Profiling an Open Source Project Ecology and Its Programmers", Electronic Markets, 14(2), pp. 77-88.

Cilek, P., Janko, W., Koch, S., Mild, A. and Taudes, A. (2004) "A Hedonic Wage-Based Methodology for Evaluating the Benefits of IT-Investments in Public Sector Organisations", Journal of Enterprise Information Management, 17(4), pp. 269-275.

Koch, S. (2003) "Das Open-Source-Entwicklungsmodell: Grundprinzipien, Fragen und Erfahrungen", HMD - Praxis der Wirtschaftsinformatik, Heft 231, pp. 55-62.

Koch, S. and Schneider, G. (2002) "Effort, Cooperation and Coordination in an Open Source Software Project: GNOME", Information Systems Journal, 12(1), pp. 27-42.

Bernroider, E. and Koch, S. (2001) "ERP Selection Process in Midsize and Large Organizations", Business Process Management Journal, 7(3), pp. 251-257.

Bernroider, E. and Koch, S. (2000) "Entscheidungsfindung bei der Auswahl betriebswirtschaftlicher Standardsoftware - Ergebnisse einer empirischen Untersuchung in österreichischen Unternehmen", WIRTSCHAFTSINFORMATIK, 42(4), pp. 329-338.

Refereed Book Chapters (10)

Koch, S. (2008) "Measuring the Efficiency of Free and Open Source Software Projects Using Data Envelopment Analysis", in: Sowe, S.K., Stamelos, I. and Samoladas, I. (eds.): Emerging Free and Open Source Software Practices, pp. 25-44, IGI Publishing, Hershey, PA.

Bernroider, E., Koch, S. and Stix, V. (2008) "Das Public IT Assessment Framework", in: Promberger, K., Janko, W. and Ihle, C. (eds.): Evaluierung von öffentlichen IT-Investitionen: Modelle und Methoden zur Messung des Erfolges von Informationssystemen in der öffentlichen Verwaltung, pp. 97-132, Neuer Wissenschaftlicher Verlag, Wien.

Bernroider, E., Koch, S. and Stix, V. (2008) "Rahmenmodelle und Methoden zur Messung des Nutzens von IT-Investitionen", in: Promberger, K., Janko, W. and Ihle, C. (eds.): Evaluierung von öffentlichen IT-Investitionen: Modelle und Methoden zur Messung des Erfolges von Informationssystemen in der öffentlichen Verwaltung, pp. 33-95, Neuer Wissenschaftlicher Verlag, Wien.

Koch, S. (2007) "ERP Implementation Effort Estimation Using Data Envelopment Analysis", in: Abramowicz, W. and Mayr, H.C. (eds.): Technologies for Business Information Systems, pp. 121-132, Springer, Dordrecht, The Netherlands.

Demetriou, N., Koch, S. and Neumann, G. (2007) "The Development of the OpenACS Community", in: Lytras, M. and Naeve, A. (eds.): Open Source for Knowledge and Learning Management: Strategies Beyond Tools, pp. 298-318, Idea Group Publishing, Hershey, PA.

Koch, S. (2007) "Implementing ERP Education in a Changing Environment and Different Degree Programs", in: Targowski, A. and Tarn, M. (eds.): Enterprise Systems Education in the 21st Century, pp. 27-40, Information Science Publishing, Hershey, PA.

Koch, S. (2007) "Implications of Free/Libre/Open Source Software for Public Organizations", in: Anttiroiko, A.-V. and Mälkiä, M. (eds.): Encyclopedia of Digital Government, pp. 1011-1018, Idea Group Reference, Hershey, PA.

Bernroider, E. and Koch, S. (2003) "ERP System Acquisition: A Process Model and Results from an Austrian Survey", in: Grant, G. (ed.): ERP & Data Warehousing in Organizations: Issues and Challenges, pp. 53-71, IRM Press, Hershey, PA.

Bernroider, E. and Koch, S. (2002) "A Framework for the Selection of ERP Packages for Small to Medium and Large Organizations", in: Hossain, L., Patrick, J.D. and Rashid, M.A. (eds.): Enterprise Resource Planning: Global Opportunities and Challenges, pp. 206-222, Idea Group Publishing, Hershey, PA.

Articles in Refereed Conference Proceedings (35)

Rofcanin, Y. and Koch, S. (to appear) “Ready to Go…? Trust in Organization and Readiness to Change as Predictors of Successful Organizational Innovations: Evidence from Cosmetics Retail Industry in Turkey”, Proceedings 6th Workshop on Trust within and between Organizations.

Koch, S. and Bertan, E. (to appear) “Offshoring to and from Turkey as an Emerging Economy: IT and other sectors ”, Proceedings Conf-IRM 2012, Vienna, Austria.

Koch, S. and Elciseven, O. (to appear) “A Theoretical Framework for Assessing Effects of User Generated Content on a Company’s Marketing Outcomes”, Proceedings Conf-IRM 2012, Vienna, Austria.

Novotny, A., Bernroider, E. and Koch, S. (to appear) “Decomposing and Operationalising IT Governance within an Organisational Context ”, Proceedings Conf-IRM 2012, Vienna, Austria.

Koch, S. and Özgür, M.O. (2010) "Venture Capital Interests in Open Source Software Business Models in Turkey", Proceedings International Workshop on Innovation and Entrepreneurship 2010, pp. 188-200, Izmir, Turkey.

Bernroider, E., Koch, S. and Stix, V. (2010) "Elements of Comprehensive Assessments of IT Infrastructure Projects in the Austrian Ministry of Finance", K. N. Andersen et al. (eds.), International Conference on Electronic Government and the Information Systems Perspective (EGOVIS '10) - 21st DEXA Conference, Lecture Notes in Computer Science (LNCS) 6267, pp. 84-91, Springer, Heidelberg.

Tosun, A., Bener, A., Koch, S. Aytac, T., Yilmaz, H. and Cetinkaya, O. (2010) "Effects of Company Age and Size on Software Processes and Maturity in the Turkish Software Industry", Proceedings International Business Information Management Conference (14th IBIMA), Istanbul, Turkey.

Caglayan, B., Bener, A. and Koch, S. (2009) "Merits of Using Repository Metrics in Defect Prediction for Open Source Projects", Proceedings 2009 ICSE Workshop on Emerging Trends in Free/Libre/Open Source Software Research and Development , pp. 31-36, Vancoucer, Canada.

Koch, S. and Mitloehner, J. (2009) "Effort Estimation Using Social Choice", Information Systems Development: Challenges in Practice, Theory and Education (16th International Conference on Information Systems Development), Barry, C., Conboy, K., Lang, M., Wojtkowski, G. and Wojtkowski, W. (eds.), pp. 901-908, Springer-Verlag, New York.

Koch, S. and Stix, V. (2008) "Open Source Project Categorization Based on Growth Rate Analysis and Portfolio Planning Methods", The 4th International Conference on Open Source Systems (IFIP Working Group 2.13 on Open Source Software), IFIP International Federation for Information Processing Series, Vol. 275, pp. 375-380, Springer Verlag, Milan, Italy.

Koch, S. (2007) "Exploring the Effects of Coordination and Communication Tools on the Efficiency of Open Source Projects using Data Envelopment Analysis", Open Source Development, Adoption and Innovation (IFIP Working Group 2.13 on Open Source Software), IFIP International Federation for Information Processing Series, Vol. 234, pp. 97-108, Springer Verlag, Limerick, Ireland.

Frank, U., Strecker, S. and Koch, S. (2007) "'Open Model' - ein Vorschlag für ein Forschungsprogramm der Wirtschaftsinformatik", eOrganisation: Service-, Prozess-, Market-Engineering - 8. Internationale Tagung Wirtschaftsinformatik (WI 07), Oberweis, A., Weinhardt, C., Gimpel, H., Koschmider, A., Pankratius, V. and Schnizler, B. (eds.), Band 2, pp. 217-234, Universitätsverlag Karlsruhe, Karlsruhe, Germany.

Koch, S. (2006) "ERP Implementation Effort Estimation Using Data Envelopment Analysis", Proceedings the 9th Business Information Systems Conference (BIS 2006), pp. 164-178, Lecture Notes in Informatics (LNI) P-85, Gesellschaft für Informatik (GI).

Koch, S., Strecker, S. and Frank, U. (2006) "Conceptual Modelling as a New Entry in the Bazaar: The Open Model Approach", Open Source Systems (IFIP Working Group 2.13 Foundation Conference on Open Source Software), IFIP International Federation for Information Processing Series, Vol. 203, pp. 9-20, Springer Verlag, Como, Italy.

Koch, S. (2005) "Value-At-Risk for e-Business Project and Portfolio Appraisal and Risk Management", Proceedings of the Fifth International Conference on Electronic Business (ICEB 2005), pp. 375-377, Hong Kong.

Koch, S. (2005) "Verwendung der Data Envelopment Analysis im Kontext von ERP Implementierungsprojekten: Vergleich und Aufwandsschätzung", Tagungsband des Software Metrik Kongresses MetriKon 2005, pp. 19-32, Magdeburger Schriften zum Empirischen Software Engineering, Shaker Verlag, Kaiserslautern.

Koch, S. and Neumann, C. (2005) "Evaluierung und Aufwandsschätzung bei der Integration von Open Source Software-Komponenten", Informatik 2005 - Beiträge der 35. Jahrestagung der Gesellschaft für Informatik e.V. (GI), pp. 91-95, Lecture Notes in Informatics (LNI) P-67, Gesellschaft für Informatik (GI).

Janko, W.H. and Koch, S. (2005) "Sourcing Decisions in the Finance Sector: Economies of Scale and Knowledge Management", Proceedings of the International Finance Symposium, pp. 1-14, Istanbul, Turkey.

Eckert, D., Koch, S. and Mitloehner, J. (2005) "Using the Iterated Prisoner's Dilemma for Explaining the Evolution of Cooperation in Open Source Communities", Proceedings of the 1st International Conference on Open Source Systems (OSS 2005), pp. 186-191, Genova, Italy.

Koch, S. (2005) "Evolution of Open Source Software Systems - A Large-Scale Investigation", Proceedings of the 1st International Conference on Open Source Systems (OSS 2005), pp. 148-153, Genova, Italy.

Hahsler, M. and Koch, S. (2005) "Discussion of a Large-Scale Open Source Data Collection Methodology", Proceedings of the Hawaii International Conference on System Sciences (HICSS-38), Big Island, Hawaii.

Robles, G., Koch, S. and Gonzalez-Barahona, J.M. (2004) "Remote analysis and measurement of libre software systems by means of the CVSanalY tool", ICSE 2004 - Proceedings of the Second International Workshop on Remote Analysis and Measurement of Software Systems (RAMSS '04), pp. 51-55, Edinburgh, Scotland.

Koch, S. (2004) "Agile Principles and Open Source Software Development: A Theoretical and Empirical Discussion", Extreme Programming and Agile Processes in Software Engineering, Lecture Notes in Computer Science (LNCS) 3092, Springer Verlag, pp. 85-93.

Hahsler, M. and Koch, S. (2004) "Cooperation and Disruptive Behaviour - Learning from a Multi-Player Internet Gaming Community", Proceedings of the IADIS International Conference Web Based Communities 2004, pp. 35-42, IADIS Press.

Bernroider, E., Hahsler, M., Koch, S., and Stix, V. (2003) "Data Envelopment Analysis zu Unterstützung der Auswahl und Einführung von ERP-Systemen", in: Geyer-Schulz, A. and Taudes, A. (eds.): Informationswirtschaft - Ein Sektor mit Zukunft, pp. 11-26, Lecture Notes in Informatics (LNI) P-33, Gesellschaft für Informatik (GI).

Koch, S. (2003) "Effort Estimation in Open Source Software Development: A Case Study", Proceedings of the 2003 IRMA International Conference, pp. 859-861, Philadelphia, PA.

Cilek, P., Janko, W., Koch, S., Mild, A. and Taudes, A. (2001) "The Evaluation of IT-Investments in Public Sector Organisations", Proceedings of the 8th European Conference on IT Evaluation (ECITE 2001), pp. 43-48, Oxford, UK.

Bernroider, E. and Koch, S. (2001) "A Process Oriented View of ERP Software Selection", Proceedings of the Joint Meeting of the 5th World Multiconference on Systemics, Cybernetics and Informatics (SCI 2001) and the 7th International Conference on Information Systems Analysis and Synthesis (ISAS 2001), Vol. II, pp. 310-315, Orlando, FL.

Koch, S. (2001) "Entwicklung von Open Source und kommerzieller Software: Unterschiede und Gemeinsamkeiten", Leichte Vorgehensmodelle - 8. Workshop der Fachgruppe 5.11 der Gesellschaft für Informatik, S. 83-96, Shaker Verlag, Glashütten/Taunus.

Bernroider, E. and Koch, S. (2000) "Differences in Characteristics of the ERP System Selection Process between Small or Medium and Large Organizations", Proceedings of the Sixth Americas Conference on Information Systems (AMCIS 2000), pp. 1022-1028, Long Beach, CA.

Koch, S. and Schneider, G. (2000) "Implementation of an Annotation Service on the WWW - Virtual Notes", Proceedings of the Eighth Euromicro Workshop on Parallel and Distributed Processing (EURO-PDP 2000), pp. 92-98, IEEE Computer Society Press, Rhodos, Greece.

Bernroider, E. and Koch, S. (1999) "Decision Making for ERP-Investments from the Perspective of Organizational Impact - Preliminary Results from an Empirical Study", Proceedings of the Fifth Americas Conference on Information Systems (AMCIS 1999), pp. 773-775, Milwaukee, WI.

Koch, S. (1999) "Using Weakest Precondition for Software Process Model Reuse", Proceedings of the Fifth Americas Conference on Information Systems (AMCIS 1999), pp. 741-743, Milwaukee, WI.

Geyer-Schulz, A., Koch, S. and Schneider, G. (1999) "Virtual Notes: Annotations on the WWW for Learning Environments", Proceedings of the Fifth Americas Conference on Information Systems (AMCIS 1999), pp. 136-138, Milwaukee, WI.

Technical Reports and Working Papers (5)

Olbrich, C. and Koch, S. (2006) "Ergebnisse eines empirischen Usability-Vergleichs von Open und Closed Source Office Paketen anhand von Microsoft Office und OpenOffice.org", Arbeitspapiere zum Tätigkeitsfeld Informationsverarbeitung, Informationswirtschaft und Prozessmanagement, Department für Informationsverarbeitung und Prozessmanagement (Hrsg.), Nr. 01/2006, Wirtschaftsuniversität Wien.

Koch, S. (2005) "Effort Modeling and Programmer Participation in Open Source Software Projects", Arbeitspapiere zum Tätigkeitsfeld Informationsverarbeitung, Informationswirtschaft und Prozessmanagement, Department für Informationsverarbeitung und Prozessmanagement (Hrsg.), Nr. 03/2005, Wirtschaftsuniversität Wien.

Koch, S. and Schneider, G. (2000) "Results from Software Engineering Research into Open Source Development Projects Using Public Data", Diskussionspapiere zum Tätigkeitsfeld Informationsverarbeitung und Informationswirtschaft, Hans R. Hansen und Wolfgang H. Janko (Hrsg.), Nr. 22, Wirtschaftsuniversität Wien.

Bernroider, E. und Koch, S. (1999) "Empirische Untersuchung der Entscheidungsfindung bei der Auswahl betriebswirtschaftlicher Standardsoftware in österreichischen Unternehmen", Diskussionspapiere zum Tätigkeitsfeld Informationsverarbeitung und Informationswirtschaft, Hans R. Hansen und Wolfgang H. Janko (Hrsg.), Nr. 20, Wirtschaftsuniversität Wien.

Dissertation and Diploma Thesis (2)

Koch, S. (1997) Von der Unternehmensmodellierung zum Workflow Management: Integrationsmöglichkeiten am Beispiel von ARIS, Process Weaver und ComponentWare, Diplomarbeit, Institut für Angewandte Informatik und Informationssysteme, Universität Wien.

Other Publications (13)

Koch, S. (2011) "Preface: Open Source Software Development Projects: Review on Effort and Efficiency", in: Koch, S. (ed.) Multi-Disciplinary Advancement in Open Source Software and Processes, pp. xii-xxvi, Information Science Reference, Hershey, PA.

Koch, S. (2010) "Editorial Preface: Adoption of Open Source Software", International Journal of Open Source Software & Processes, 2(3): i.

Koch, S. (2010) "Business Value of Information Systems – Planning and Controlling", Leaders, 11: 24-27.

Koch, S. (2009) "Editorial Preface: Open Source Software Development – A Social Process", International Journal of Open Source Software & Processes, 1(4): i

Koch, S. (2009) "Editorial Preface: Introducing the International Journal of Open Source Software & Processes", International Journal of Open Source Software & Processes, 1(1): i-iii.

Koch, S. (2008) "Open Source Software and the Information Economy", Podcast for IEEE International Professional Communication Conference 2008 (IPCC 2008), Montreal, Canada (available at http://ewh.ieee.org/soc/pcs/?q=node/151).

Koch, S. und Strahringer, S. (2008) "Editorial - Customer & Supplier Relationship Management", HMD - Praxis der Wirtschaftsinformatik, Heft 259, p. 3.

Koch, S. (2008) "Buchbesprechung von Neckel, P. Knobloch, B.: Customer Relationship Analytics", HMD - Praxis der Wirtschaftsinformatik, Heft 259, pp. 122-124.

Koch, S. (2007) "Foreword - The many questions from open source software...", in: St.Amant, K. and Still, B. (eds.): Handbook of Research on Open Source Software: Technological, Economic, and Social Perspectives, pp. xxvi-xxix, Information Science Reference, Hershey, PA.

Fitzgerald, B., Berdou, E., Crowston, K., Madey, G., Conklin, M., Koch, S. and Scacchi, W. (2007) "Data and analyses sharing to support research on free/libre/open source software - A Debate", Open Source Development, Adoption and Innovation (IFIP Working Group 2.13 on Open Source Software), IFIP International Federation for Information Processing Series, Vol. 234, pp. 355-356, Springer Verlag, Limerick, Ireland.

Koch, S. (2006) "Open-source Softwareentwicklung als Modell für kollabrotive Realisierung", 12. SI-SE Fachtagung: Collaborative Software Engineering (Fachgruppe Software Engineering der Schweizer Informatik Gesellschaft), Universität Zürich.

Koch, S. (2000) "Software-Qualitätsmanagement in der Praxis", ADV-Mitteilungen, 4/2000.

Wissenschaftliche Vorträge (Talks)

• Eighth International Conference on Technology, Knowledge and Society (Jan. 16-18, 2012, University of California, Los Angeles)
  • Patterns of User Innovation: Using Pattern Language for Managerial Knowledge Management (Virtual Presentation with Dilek Gergin)
• PhD in Finance – Applied Research in Financial Management AD615 (Bogazici University – Department of Management, Dec. 15, 2010)
  • Time Series Data and Ordinary Least Squares Regression
• PhD Seminar (Bogazici University – Department of Management, Mar. 22, 2010)
  • Exploring the Benefits of Coordination and Communication Tools on the Efficiency of Open Source Projects using Data Envelopment Analysis
• 3rd IEEE International Conference on Digital Ecosystems and Technologies (Jun. 1-3, 2009, Istanbul, Turkey)
  • Tutorial: Open Source Community Characteristics and Product Quality
• Martindale Student Assocation - Lehigh University, Bethlehem, PA (Bogazici University, May 14, 2009, Istanbul, Turkey)
  • Leadership styles and models from a cross-cultural perspective
• Free Software & Open Source Days 2009 (Bilgi University, Apr. 17-18, 2009, Istanbul, Turkey)
  • The Efficiency of Open Source Software Development
• Softlab Seminar (Bogazici University, Department of Computer Engineering, Nov. 26, 2008, Istanbul, Turkey)
  • Exploring the Effects of Process Characteristics on Product Quality in Open Source Software Development
• 2nd FLOSS International Workshop on Free/Libre Open Source Software (Jun. 26-27, 2008, Rennes, France)
  • Keynote Speech: The Efficiency of Open Source Software Development
• Berufungsvortrag Universität Innsbruck (Apr. 15, 2008, Innsbruck, Austria)
  • Empirische Analyse verteilter kooperativer Entwicklungsprozesse
• Dagstuhl Seminar: Combining the Advantages of Product Lines and Open Source (Apr. 2-5, 2008, Schloss Dagstuhl, Germany)
  • Where to draw the line on open source in software product lines? A business perspective
• The Third International Conference on Open Source Systems (Jun. 11-13, 2007, Limerick, Ireland)
  • Eploring the Effects of Coordination and Communication Tools on the Efficiency of Open Source Projects using Data Envelopment Analysis
  • Panel: Data and Analyses Sharing to Support Research on Free/Libre/Open Source Software: A Debate
• Berufungsvortrag Universität Osnabrück (Apr. 11, 2007, Osnabrück, Germany)
  • IT-Controlling von ERP-Systemen - Anwendungen der Data Envelopment Analysis in Benchmarking und Planung
• Berufungsvortrag Universität Karlsruhe (TH) (Nov. 14, 2006, Karlsruhe, Germany)
  • Toolkits als Ansatz zur Verbesserung von eOrganisationen und deren Bewertung
• The Second International Conference on Open Source Systems (Jun. 8-10, 2006, Como, Italy)
  • Conceptual Modelling as a New Entry in the Bazaar: The Open Model Approach
• BIS 2006 - 9th International Conference on Business Information Systems (May 31 - Jun. 2, 2006, Universität Klagenfurt)
  • ERP Implementation Effort Estimation Using Data Envelopment Analysis
• Workshop on ICT and Justice (Research Institute on Judicial Systems, University of Bologna) (Apr. 7-8, 2006, Bologna, Italy)
  • Case Study on ICT in Justice: Austria
• 12. SI-SE Fachtagung: Collaborative Software Engineering (Fachgruppe Software Engineering der Schweizer Informatik Gesellschaft) (Mar. 16-17, 2006, Universität Zürich)
  • Open-source Softwareentwicklung als Modell für kollaborative Realisierung
• Libre Software Engineering Workshop (Feb. 10, 2006, Universidad Rey Juan Carlos, Madrid)
  • Manpower function modeling for open source projects
• Universität Duisburg-Essen, Lehrstuhl für Wirtschaftsinformatik und Unternehmensmodellierung (Prof. Frank) (Nov. 30, 2005, Essen, Germany)
  • Analyse und Aufwandsschätzung von Open Source Projekten (Gastvortrag Vorlesung "Informationssysteme in der Praxis")
• MetriKon 2005 - DASMA Software Metrik Kongress (Nov. 15-16, 2005, Kaiserslautern, Germany)
  • Verwendung der Data Envelopment Analysis im Kontext von ERP Implementierungsprojekten: Vergleich und Aufwandsschätzung
• Informatik 2005 - 35. Jahrestagung der Gesellschaft für Informatik e.V. (GI) (Sep. 19-22, 2005, Bonn, Germany)
  • Evaluierung und Aufwandsschätzung bei der Integration von Open Source Software-Komponenten
• The First International Conference on Open Source Systems (Jul. 11-15, 2005, Genova, Italy)
  • Evolution of Open Source Software Systems - A Large-Scale Investigation
• International Finance Symposium (Jun. 9-10, 2005, Istanbul, Turkey)
  • Sourcing Decisions in the Finance Sector: Economies of Scale and Knowledge Management
• Oxford Workshop on Libre Software (Jun. 25-26, 2004, The Oxford Internet Institute, Oxford, UK)
  • Evolution of Cooperation in Open Source Communities - A Research Agenda
  • Proposal for an Academic Journal on Libre Software
• XP 2004 - Fifth International Conference on Extreme Programming and Agile Processes in Software Engineering (Jun. 6-10, 2004, Garmisch-Partenkirchen, Germany)
  • Agile Principles and Open Source Software Development: A Theoretical and Empirical Discussion
• IADIS International Conference Web Based Communities 2004 (Mar. 24-26, 2004, Lisbon, Portugal)
  • Cooperation and Disruptive Behaviour - Learning from a Multi-Player Internet Gaming Community
• Informationswirtschaft - Ein Sektor mit Zukunft (Sep. 4-5, 2003, Wirtschaftsuniversität Wien)
  • DEA zu Unterstützung der Auswahl und Einführung von ERP-Systemen: Effizienzvergleich von ERP-Einführungsprojekten
• Rechtsforum Infolaw (Jun. 3, 2003, Abteilung für Informationsrecht und Immaterialgüterrecht, Wirtschaftsuniversität Wien)
  • Open Source Software - Eine ökonomische Alternative
• E&I Research Forum (Apr. 8, 2003, Abteilung für Entrepreneurship und Gründungsforschung, Wirtschaftsuniversität Wien)
  • Empirical Research into Open Source Software Development Processes
• Jornada Técnica: Metodologías de estudio y desarrollo de software libre (GSyC Universidad Rey Juan Carlos, Mar. 12, 2003, Madrid)
  • Empirical Research into Open Source Software Development: Past, Current and Future Work (RealVideo [340MB])
• IRMA 2003 - IRMA International Conference (May 18-21, 2003, Philadelphia, PA)
  • Effort Estimation in Open Source Software Development: A Case Study
• SCI 2001 - 5th World Multiconference on Systemics, Cybernetics and Informatics (Jul. 22-25, 2001, Orlanda, FL)
  • A Process Oriented View of ERP Software Selection
• ECITE 2001 - 8th European Conference on Information Technology Evaluation (Sep. 17-18, 2001, Oxford, UK)
  • The Evaluation of IT Investments in Public Sector Organisations
• Leichte Vorgehensmodelle - 8. Workshop der Fachgruppe 5.11 der Gesellschaft für Informatik (Mar. 7-8, 2001, Glashütten/Taunus)
  • Entwicklung von Open Source und kommerzieller Software: Unterschiede und Gemeinsamkeiten
• AMCIS 2000 - Sixth Americas Conference on Information Systems (Aug. 10-13, 2000, Long Beach, CA)
  • Differences in Characteristics of the ERP System Selection Process between Small or Medium and Large Organizations
  • Constructs of Process Change Management in ERP Context: A Focus on SAP R/3
• EURO-PDP 2000 - 8th Euromicro Workshop on Parallel and Distributed Processing (Jan. 19-21, 2000, Rhodes, Greece)
  • Implementation of an Annotation Service on the WWW - Virtual Notes
• AMCIS 1999 - Fifth Americas Conference on Information Systems (Aug. 12-15, 1999, Milwaukee, WI)
  • Virtual Notes: Annotations on the WWW for Learning Environments
  • Using Weakest Precondition for Software Process Model Reuse

Projekte (Research and Industry Projects)

Research Projects

• Models for Cooperative Advertising with A Strong Retailer and A Weak Manufacturer
  (Bogazici University Research Fund, 2011 - 2012)
  
  
• Competitive Index Model for the Turkish Software Industry
  (Bogazici University Research Fund, 2009 - 2010)
  
  
• FLOSSMETRICS - Free / Libre / Open Source Software Metrics and Benchmarking Study
  (Specific Support Action, European Community - Research and Technology Development: Sixth Framework Programme, FP6-2005-IST-5, 2006 - 2009)
  
  
• SEDEPECA: Software Development Effort and Productivity Estimation by Characterizing Activity
  (OEAD - Wissenschaftlich-Technische Zusammenarbeit, Acciones Integradas, Österreich - Spanien, 2007 - 2008)
  
  
• Information and Communication Technology for Justice - Tecnologie dell'informazione e della communicazione per la guistizia
  (Italian National Research Council (CNR) / Dipartimenta di Organizzazione e Sistema Politica, Universita di Bologna, 2005 - 2006)
  
  
• ERP selection process in midsized and large organizations
  (ASO - Austrian Science and Research Liaison Office, Bratislava, 2006 - 2007)
  
  

Research Projects - Proposals

• LibreSoftNet: Network of research
  (COST - European Cooperation in the field of Scientific and Technical Research, Open Call, 2006)
  
  
• Open Source Licensing: Legislation, Strategy and Policy
  (Anglo-German Foundation / Deutsch-Britische Stiftung: Research Initiative 'Creating sustainable growth in Europe', 2005)
  
  
• FLOSSQUANT - Free/Libre and Open Source Software: Quantitative Analysis and Metrics
  (Proposal - Specific Targeted Research Project, European Community - Research and Technology Development: Sixth Framework Programme, FP6-2003-IST-2)
  
  
• LIBRE-NET - The European Network for Free/Libre/Open-source Software in Networked Environments
  (Proposal - Network of Excellence, European Community - Research and Technology Development: Sixth Framework Programme, FP6-2002-IST-1)
  
  
• CROSSWEBS - CRoss-disciplinary Open Source SoftWare research: Engineering, Business and Social issues
  (Expression of Interest - Network of Excellence, European Community - Research and Technology Development: Sixth Framework Programme, 2002)
  
  
• ERPel - Enterprise Resource Planning via e-Learning
  (Projektantrag zur Initiative Neue Medien in der Lehre an Universitäten und Fachhochschulen des BMBWK, Akademische IT-Lehr- und Lernplattform (AKIT), 10/00-04/01)