Rauchecker, G., &; Schryen, G. (2019). An Exact Branch-and-Price Algorithm for Scheduling Rescue Units during Disaster Response. European Journal of Operational Research, 272(1), 352–363.
LibreCat: /record/5674

Rauchecker, G., &; Schryen, G. (2019). Using High Performance Computing for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times: Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm. Computers &; Operations Research, (104), 338–357.
LibreCat: /record/6512

Schuhbeck, V., Siegfried, N., Dorner, V., Benlian, A., Scholz, M., &; Schryen, G. (2019). Walking the Middle Path: How Medium Trade-off Exposure Leads to Higher Consumer Satisfaction in Recommender Agents. In Proceedings of the 14. Internationale Tagung Wirtschaftsinformatik (pp. 55–64). Siegen, Germany.
LibreCat: /record/6514

Kuhlemann, S., Sellmann, M., &; Tierney, K. (2019). Exploiting Counterfactuals for Scalable Stochastic Optimization. In Lecture Notes in Computer Science. Cham.https://doi.org/10.1007/978-3-030-30048-7_40 
LibreCat: /record/14890
DOI: 10.1007/978-3-030-30048-7_40

Schryen, G., Kliewer, N., Borndörfer, R., &; Koch, T. (2019). High-Performance Business Computing – Parallel Algorithms and Implementations for Solving Problems in Operations Research and Data Analysis. OR News, 65, 34–35.
LibreCat: /record/14540

Rauchecker, G., &; Schryen, G. (2018). Decision Support for the Optimal Coordination of Spontaneous Volunteers in Disaster Relief. In Proceedings of the 15th International Conference on Information Systems for Crisis Response and Management. Rochester, NY, USA.
LibreCat: /record/5675

Prester, J., Wagner, G., &; Schryen, G. (2018). Classifying the Ideational Impact of IS Review Articles: A Natural Language Processing Based Approach. In Proceedings of the 2018 International Conference on Information Systems (ICIS 2018). San Francisco, CA, USA.
LibreCat: /record/5681

Schillinger, R., &; Schryen, G. (2018). Security in Highly Connected IT Systems – Results of the Bavarian Research Alliance FORSEC. University of Regensburg.https://doi.org/10.5283/epub.36264 
LibreCat: /record/6164
DOI: 10.5283/epub.36264

Weishäupl, E., Yasasin, E., &; Schryen, G. (2018). Information Security Investments: An Exploratory Multiple Case Study on Decision-Making, Evaluation and Learning. Computers &; Security, 77, 807–823.
LibreCat: /record/5586

Schuster, R., Wagner, G., &; Schryen, G. (2018). Information Systems Design Science Research and Cumulative Knowledge Development: An Exploratory Study. In Proceedings of the 2018 International Conference on Information Systems (ICIS 2018). San Francisco, CA, USA.
LibreCat: /record/5600

Hallmann, C., Burmeister, S. C., Wissing, M., &; Suhl, L. (2018). Heuristics and Simulation for Water Tank Optimization. In Communications in Computer and Information Science. Cham.https://doi.org/10.1007/978-3-319-96271-9_5 
LibreCat: /record/14856
DOI: 10.1007/978-3-319-96271-9_5

Hallmann, C., &; Kuhlemann, S. (2018). Model Generator for Water Distribution Systems. In Operations Research Proceedings. Cham.https://doi.org/10.1007/978-3-319-89920-6_34 
LibreCat: /record/14861
DOI: 10.1007/978-3-319-89920-6_34

Aziz, H., Rauchecker, G., Schryen, G., &; Walsh, T. (2017). Algorithms for Max-Min Share Fair Allocation of Indivisible Chores. In Thirty-First AAAI Conference on Artificial Intelligence (AAAI-17) (Vol. 31, pp. 1–7). San Francisco, CA, USA.
LibreCat: /record/5692

Wagner, G., Prester, J., &; Schryen, G. (2017). Exploring the Scientific Impact of Information Systems Design Science Research: A Scientometric Study. In 38th International Conference on Information Systems. Seoul, South Korea.
LibreCat: /record/5594

Schryen, G., &; Hristova, D. (2017). High-Performance Business Computing - Effizienzsteigerung durch Parallelisierung. Smart Data Radar (Deutsche Bank).
LibreCat: /record/5626

Schryen, G., Benlian, A., Rowe, F., Shirley, G., Larsen, K., Petter, S.,  Yasasin, E. (2017). Literature Reviews in IS Research: What Can Be Learnt from the Past and Other Fields? Communications of the AIS, 40, 557–569.
LibreCat: /record/5633

Scholz, M., Dorner, V., Schryen, G., &; Benlian, A. (2017). A configuration-based recommender system for supporting e-commerce decisions. European Journal of Operational Research, 259(1), 205–215.
LibreCat: /record/5671

Beckschäfer, M., Malberg, S., Tierney, K., &; Weskamp, C. (2017). Simulating Storage Policies for an Automated Grid-Based Warehouse System. In Lecture Notes in Computer Science. Cham.https://doi.org/10.1007/978-3-319-68496-3_31 
LibreCat: /record/14857
DOI: 10.1007/978-3-319-68496-3_31

Rauchecker, G., &; Schryen, G. (2016). Projekt KUBAS: Koordination ungebundener Vor-Ort-Helfer. Im Einsatz, 23, 44–46.
LibreCat: /record/5676

Wagner, G., Prester, J., Roche, M., Benlian, A., &; Schryen, G. (2016). Factors Affecting the Scientific Impact of Literature Reviews: A Scientometric Study. In International Conference on Information Systems.
LibreCat: /record/5595

Schryen, G., Wagner, G., &; Schlegel, A. (2016). Development of two novel face-recognition CAPTCHAs: a security and usability study. Computers &; Security, 60(July), 95–116.
LibreCat: /record/5617

Rauchecker, G., &; Schryen, G. (2015). High-Performance Computing for Scheduling Decision Support: A Parallel Depth-First Search Heuristic. In Australasian Conference on Information Systems (pp. 1–13).
LibreCat: /record/5678

Püschel, T., Schryen, G., Hristova, D., &; Neumann, D. (2015). Revenue Management for Cloud Computing Providers: Decision Models for Service Admission Control under Non-probabilistic Uncertainty. European Journal of Operational Research, 244(2), 637–647.
LibreCat: /record/5679

Yasasin, E., &; Schryen, G. (2015). Requirements for IT Security Metrics - An Argumentation Theory Based Approach. In 23rd European Conference on Information Systems (ECIS 2015).
LibreCat: /record/5541

Weishäupl, E., Yasasin, E., &; Schryen, G. (2015). A Multi-Theoretical Literature Review on Information Security Investments using the Resource-Based View and the Organizational Learning Theory. In International Conference on Information Systems.
LibreCat: /record/5588

Weishäupl, E., Yasasin, E., &; Schryen, G. (2015). IT Security Investments Through the Lens of the Resource-Based View: A new Theoretical Model and Literature Review. In 23rd European Conference on Information Systems (ECIS 2015).
LibreCat: /record/5589

Weishäupl, E., Kunz, M., Yasasin, E., Wagner, G., Prester, J., Schryen, G., &; Pernul, G. (2015). Towards an Economic Approach to Identity and Access Management Systems Using Decision Theory. In 2nd International Workshop on Security in highly connected IT Systems (SHCIS?15).
LibreCat: /record/5590

Schryen, G., &; Weishäupl, E. (2015). IT-Sicherheit: Ökonomisch Planen und Bewerten. Managementkompass, (2), 17–18.
LibreCat: /record/5616

Schryen, G., Wagner, G., &; Benlian, A. (2015). Theory of Knowledge for Literature Reviews: An Epistemological Model, Taxonomy and Empirical Analysis of IS Literature. In International Conference on Information Systems (ICIS).
LibreCat: /record/5618

Schryen, G., Rauchecker, G., &; Comes, M. (2015). Resource Planning in Disaster Response - Decision Support Models and Methodologies. Business &; Information Systems Engineering (BISE), 57(4), 243–259.
LibreCat: /record/5622

Schryen, G. (2015). Writing qualitative IS literature reviewsf? Guidelines for synthesis, interpretation and guidance of research. Communications of the AIS, 37(Art 12), 286–325.
LibreCat: /record/5634

Rauchecker, G., Yasasin, E., &; Schryen, G. (2014). A Decision Support System for IT Security Incident Management. In 11th International Conference on Trust, Privacy, and Security in Digital Business (TRUSTBUS).
LibreCat: /record/5672

Fink, A., Kliewer, N., Mattfeld, D., Mönch, L., Rothlauf, F., Schryen, G.,  Voß, S. (2014). Model-based Decision Support in Manufacturing and Service Networks. Business &; Information Systems Engineering (BISE), 6(1), 17–24.
LibreCat: /record/5686

Fink, A., Kliewer, N., Mattfeld, D., Mönch, L., Rothlauf, F., Schryen, G.,  Voß, S. (2014). Modellbasierte Entscheidungsunterstützung in Produktions- und Service-Netzwerken. Wirtschaftsinformatik, 56(1), 21–29.
LibreCat: /record/5687

Schryen, G. (2014). The Epistemological Impact of Literature Reviews in Information Systems Research.
LibreCat: /record/6197

Yasasin, E., Rauchecker, G., Prester, J., &; Schryen, G. (2014). A Fuzzy Security Investment Decision Support Model for Highly Distributed Systems. In 1st Workshop on Security in highly connected IT systems (SHCIS 14).
LibreCat: /record/5573

Wex, F., Schryen, G., Feuerriegel, S., &; Neumann, D. (2014). Emergency Response in Natural Disaster Management: Allocation and Scheduling of Rescue Units. European Journal of Operational Research.
LibreCat: /record/5585

Schryen, G., &; Wex, F. (2014). Risk Reduction in Natural Disaster Management Through Information Systems: A Literature review and an IS design science research agenda. International Journal of Information Systems for Crisis Response and Management (IJISCRAM), 6(1).
LibreCat: /record/5614

Schryen, G., &; Hristova, D. (2014). Duality in fuzzy linear programming: A survey. OR -Spectrum, 37(1), 1–48.
LibreCat: /record/5627

Schryen, G. (2014). Writing qualitative IS literature reviewsf? Guidelines for synthesis, interpretation and guidance of research. Communications of the AIS.
LibreCat: /record/5636

de Meer, H., Diener, M., Herkenhöner, R., Kucera, M., Niedermeier, M., Reisser, A.,  Yasasin, E. (2013). Sicherheitsherausforderungen in hochverteilten Systemen. PIK - Praxis Der Informationsverarbeitung Und Kommunikation, 36(3), 153–159.
LibreCat: /record/5682

Wex, F., &; Schryen, G. (2013). Effektiver Einsatz von Rettungskräften bei Naturkatastrophen - Modelle und Verfahren zur Entscheidungsunterstützung. Blick in Die Wissenschaft, (28), 27–32.
LibreCat: /record/6166

Wex, F., Schryen, G., &; Neumann, D. (2013). Assignments of Collaborative Rescue Units during Emergency Response. International Journal of Information Systems for Crisis Response and Management, 5(4), 63–80.
LibreCat: /record/5575

Wex, F., Schryen, G., &; Neumann, D. (2013). Decision Modeling for Assignments of Collaborative Rescue Units during Emergency Response. In Proceedings of the 46th Hawaii International Conference on System Science.
LibreCat: /record/5576

Schryen, G. (2013). Revisiting IS Business Value Research: What we already know, what we still need to know, and how we can get there. European Journal of Information Systems (EJIS), 22(2), 139–169.
LibreCat: /record/5637

Püschel, T., Schryen, G., Hristova, D., &; Neumann, D. (2012). Cloud Service Revenue Management. In European Conference on Information Systems.
LibreCat: /record/5680

Lang, F., Schryen, G., &; Fink, A. (2012). Elicitating, modeling, and processing uncertain human preferences for software agents in electronic negotiations: An empirical study. In International Conference on Information Systems.
LibreCat: /record/5683

Bodenstein, C., Schryen, G., &; Neumann, D. (2012). Energy-Aware Workload Management Models for Operating Cost Reduction in Data Centers. European Journal of Operational Researchf: EJOR, 222(1), 157–167.
LibreCat: /record/5688

Wex, F., Schryen, G., &; Neumann, D. (2012). A Fuzzy Decision Support Model for Natural Disaster Response under Informational Uncertainty. International Journal of Information Systems for Crisis Response and Management, 4(3), 23–41.
LibreCat: /record/5578

Wex, F., Schryen, G., &; Neumann, D. (2012). Operational Emergency Response under Informational Uncertainty: A Fuzzy Optimization Model for Scheduling and Allocating Rescue Units. In International Conference on Information Systems for Crisis Response and Management (ISCRAM) 2012.
LibreCat: /record/5579

Schryen, G., &; Wex, F. (2012). IS Design Thinking in Disaster Management Research. In 45th Hawaii International Conference on System Sciences.
LibreCat: /record/5615

Schryen, G. (2012). Profis im Netz: Soziale Netzwerke könnten in Unternehmen viel mehr Nutzen stiften - woran hakt es?, in: Die Zeit (12.04.2012). Die Zeit.
LibreCat: /record/5638

Schryen, G. (2012). Soziale Netzwerke in Unternehmenskontexten - Potentiale und Anforderungen, in: Information Management &; Consulting, to appear. IM Information Management &; Consulting.
LibreCat: /record/5639

Lang, F., Schryen, G., &; Fink, A. (2011). Automated Negotiations Under Uncertain Preferences. In Proceedings of the 2011 International Conference on Information Systems (ICIS 2011).
LibreCat: /record/5684

Bodenstein, C., Schryen, G., &; Neumann, D. (2011). Reducing Datacenter Energy Usage through Efficient Job Allocation. In Proceedings of the 19th European Conference on Information Systems (ECIS 2011).
LibreCat: /record/5689

Wex, F., Schryen, G., &; Neumann, D. (2011). Intelligent Decision Support for Centralized Coordination during Emergency Response. In Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011).
LibreCat: /record/5581

Schryen, G., Volkamer, M., &; Ries, S. (2011). A formal approach towards measuring trust in distributed systems. In Proceedings of the 26th Annual ACM Symposium on Applied Computing.
LibreCat: /record/5619

Schryen, G. (2011). Is open source security a myth? What do vulnerability and patch data say? Communications of the ACM (CACM), Vol. 54(No. 5), 130–139.
LibreCat: /record/5640

Schryen, G. (2011). Seeking the VALUE in IS Business Value Research - An Agenda for investigating Synergies Between Socio-organizational Change, IS Capabilities Change, and IS Innovation. In IS Capabilities Change, and IS Innovation, Proceedings of the 19th European Conference on Information Systems (ECIS 2011), Helsinki.
LibreCat: /record/5641

Finkbeiner, J., Bodenstein, C., Schryen, G., &; Neumann, D. (2010). Applying heuristic methods for job scheduling in storage markets. In 18th European Conference on Information Systems (ECIS 2010).
LibreCat: /record/5685

Bodenstein, C., Schryen, G., &; Neumann, D. (2010). From “Take-it-or-leave-it” offers to “Take-it-or-be-left-out” Ultimatum - A trade mechanism for Online Services. In 18th European Conference on Information Systems (ECIS 2010).
LibreCat: /record/5690

Volkamer, M., &; Schryen, G. (2010). Measuring eTrust in distributed systems - General Concept and Application to Internet Voting. In Proceedings of the 23rd Bled eConference.
LibreCat: /record/5598

Schryen, G., &; Eliot, R. (2010). Increasing software security through open source or closed source development? Empirics suggest that we have asked the wrong question. In 43rd Annual Hawaii International Conference on System Sciences.
LibreCat: /record/5631

Schryen, G., &; Bodenstein, C. (2010). A decision-theoretic foundation of IS business value research. In Proceedings of the 18th European Conference on Information Systems (ECIS 2010).
LibreCat: /record/5632

Schryen, G. (2010). A Fuzzy Model for IT Security Investments. In F. C. Freiling (Ed.), Sicherheit 2010f: Sicherheit, Schutz und Zuverl\'22assigkeitf; Konferenzband der 5. Jahrestagung des Fachbereichs Sicherheit der Gesellschaft f\'22ur Informatik e.V. (GI), 5. - 7. Oktober 2010 in Berlin (Vol. 170, pp. 289–304). Bonn: Gesellschaft für Informatik.
LibreCat: /record/5642

Schryen, G. (2010). An Analysis of Literature Reviews on IS Business Value: How Deficiencies in Methodology and Theory Use Resulted in Limited Effectiveness. In Proceedings of the First Scandinavian Conference on Information Systems (SCIS).
LibreCat: /record/5643

Schryen, G. (2010). Preserving knowledge on IS business value: what literature reviews have done. Business \'26; Information Systems Engineering (BISE), 52(4), 225–237.
LibreCat: /record/5644

Schryen, G. (2010). Ökonomischer Wert von Informationssystemen - Beitrag von Literatur-Reviews zum Wissenserhalt ( = Preserving Knowledge on IS Business Value. What Literature Reviews Have Done). Wirtschaftsinformatik, 52(4), 225–237.
LibreCat: /record/5645

Volkamer, M., Schryen, G., Langer, L., Schmidt, A., &; Buchmann, J. (2009). Elektronische Wahlen: Verifizierung vs. Zertifizierung. In Workshop Elektronische Wahlen, elektronische Teilhabe, Societyware, 39th GI-Jahrestagung.
LibreCat: /record/5597

Schryen, G., &; Rich, E. (2009). Security in Large-Scale Internet Elections: A Retrospective Analysis of Elections in Estonia, The Netherlands, and Switzerland. IEEE Transactions on Information Forensics \'26; Security, 4(4 Part), 729–744.
LibreCat: /record/5621

Schryen, G., &; Kadura, R. (2009). Open Source vs. Closed Source Software: Towards Measuring Security. In 24th Annual ACM Symposium on Applied Computing.
LibreCat: /record/5625

Schryen, G. (2009). A comprehensive and comparative analysis of the patching behavior of open source and closed source software vendors. In 5th International Conference on IT Security Incident Management \'26; IT Forensics.
LibreCat: /record/5646

Schryen, G. (2009). Security of open source and closed source software: An empirical comparison of published vulnerabilities. In 15th Americas Conference on Information Systems.
LibreCat: /record/5647

Schryen, G. (2008). Effektivität und Effizienz von Anti-Spam-Maßnahmen. Linux Technical Review, (7).
LibreCat: /record/5648

Schryen, G. (2008). Practical Security of Large-scale Elections: An Exploratory Case Study of Internet Voting in Estonia. In 7th Workshop on e-Business (WEB 2008, AIS Special Interest Group on E-Business).
LibreCat: /record/5649

Schryen, G. (2007). Preventing E-mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework.
LibreCat: /record/6287

Schryen, G. (2007). A Scalable and Flexible Infrastructure Framework For Addressing Spam. In D. Satesh &; R. Prabhakar (Eds.), Proceedings of IPSI International Conference on Advances in the Internet, Processing, Systems, and Interdisciplinary Research (pp. 55–64). Hyderabad, India: ICFAI University Press.
LibreCat: /record/5650

Schryen, G. (2007). Anti-Spam Measures: Analysis and Design. Berlin, Heidelberg, New York: Springer.
LibreCat: /record/5651

Schryen, G. (2007). Anti-spam legislation: An analysis of laws and their effectiveness. Information and Communications Technology Law, 16(1), 17–32.
LibreCat: /record/5652

Schryen, G. (2007). Approaches Addressing Spam. In D. Satesh &; R. Prabhakar (Eds.), Spam: An Introduction (pp. 41–57). Hyderabad, India: ICFAI University Press.
LibreCat: /record/5653

Schryen, G. (2007). Armed for the spam battle - a technological and organizational infrastructure framework. In 40th Annual Hawaii International Conference on System Sciences.
LibreCat: /record/5654

Schryen, G. (2007). Do anti-spam measures effectively cover the e-mail communication network? A formal approach. The Journal of Information Systems Security (AIS Special Interest Group in Security), 3(2), 66–90.
LibreCat: /record/5655

Schryen, G. (2007). Location Based Services. In H. Schulte (Ed.), Vom LAN zum Kommunikationsnetz - Systeme und Applikationen. Kissing: Interest-Verlag.
LibreCat: /record/5656

Schryen, G. (2007). Spam-Emails. In H. Schulte (Ed.), Vom LAN zum Kommunikationsnetz - Systeme und Applikationen, Edition 02/2007 (Vol. 9/12). Kissing: Interest-Verlag.
LibreCat: /record/5657

Schryen, G. (2007). The Impact that Placing Email Addresses on the Internet has on the Receipt of Spamf? An Empirical Analysis. Computers &; Security, 2(5), 361–372.
LibreCat: /record/5658

Schryen, G. (2006). A formal approach towards assessing the effectiveness of anti-spam procedures. In 39th Annual Hawaii International Conference on System Sciences.
LibreCat: /record/5659

Schryen, G. (2005). A honeypot for the exploration of spammers’ behaviour. IATAC IAnewsletter, 8(3), 22–25.
LibreCat: /record/5660

Schryen, G. (2005). An e-mail honeypot addressing spammers’ behavior in collecting and applying addresses. In Proceedings of the 6th IEEE Information Assurance Workshop (pp. 37–41). Westpoint.
LibreCat: /record/5661

Schryen, G. (2004). Security Aspects of Internet Voting. In 37th Annual Hawaii International Conference on System Sciences.
LibreCat: /record/5765

Schryen, G. (2004). Effektivität von Lösungsansätzen zur Bekämpfung von Spam. Wirtschaftsinformatik, 46(4), 281–288.
LibreCat: /record/5662

Schryen, G. (2004). Fighting Spam: Motivating an Account-based Approach. In P. Isaias (Ed.), Proceedings of the IADIS International Conference WWW/Internet 2004. vol. 2 (pp. 937–940). Madrid: IADIS Press.
LibreCat: /record/5663

Schryen, G. (2004). How Security Problems Can Compromise Remote Internet Voting Systems. In Workshop of the ESF TED Programme (pp. 121–131).
LibreCat: /record/5664

Schryen, G. (2004). Neulich am Hotspot - Bringt Mobiles Internet die Menschen ins Netz? In G. Gehrke (Ed.), Digitale Teilung - digitale Integrationf: Perspektiven der Internetnutzung (pp. 45–51). München: KOPAED-Verlag.
LibreCat: /record/5666

Schryen, G., Herstell, J., &; Schoenen, M. (2003). Online Marktforschung im Mittelstand: Analyse von Konsumentenverhalten in 3D-Internet-Welten. Wiesbaden: Deutscher Universitäts-Verlag.
LibreCat: /record/5629

Schryen, G., &; Herstell, J. (2003). Online-Marktforschung - Analyse von Konsumentenverhalten in virtuellen Umgebungen, in: Information Management &; Consulting, 18,2. IMf: Die Zeitschrift Für Information Management Und Consulting, 18(2), 74–77.
LibreCat: /record/5630

Schryen, G. (2003). E-Democracy: Internet Voting. In Proceedings of the IADIS International Conference WWW Internet 2003. vol. 2 (pp. 1017–1021). Algarve: IADIS Press.
LibreCat: /record/5667

Schryen, G. (2003). Internet-Wahlen. In 6. Internationale Tagung Wirtschaftsinformatik (pp. 937–956).
LibreCat: /record/5668

Schryen, G., &; Schoenen, M. (2002). Data Warehouse in der Marktforschung - Analyse von Benutzeraktivitäten in virtuellen Welten. In Data Warehousing 2002 (pp. 103–119).
LibreCat: /record/5620

Schryen, G., &; Karla, J. (2002). Elektronisches Papier - Display-Technologie mit weitem Anwendungsspektrum. Wirtschaftsinformatik, 44(6), 567–574.
LibreCat: /record/5623

Schryen, G. (2002). Elektronische Zeitung - das Erbe Gutenbergs? I-Com. Zeitschrift Für Interaktive Und Kooperative Medien, (3), 36–37.
LibreCat: /record/5669