Papageorgiou, A.; Miede, A.; Eckert, J.; Steinmetz, R. (2010)
Study and Comparison of Adaptation Mechanisms for Performance Enhancements of Mobile Web Service Consumption
In: Sixth IEEE World Congress on Services (SERVICES 2010); Miami, USA
Category: Proceedings
AbstractMobile Web services lie on the intersection of two big IT trends, namely Service-oriented Architectures (SOA) and mobile applications. So, their usage is likely to expand dramatically in the next years. However, the heavyweight nature of service-orientation in terms of the messaging-overhead that is necessary in order to achieve interoperability and loose-coupling comes in contrast with the lightweight nature of mobile devices and with the need to transmit wirelessly as few data as possible. This study categorizes the mechanisms that have been designed in order to bridge this gap, provides comparisons, discusses the results of related experiments, and introduces the future scenario in which the insights of the study can be exploited.
Reference No.: 2010-1696
Papageorgiou, A.; Krop, T.; Schulte, S.; Eckert, J.; Steinmetz, R. (2010)
Enhancing Availability with Self-Organization Extensions in a SOA Platform
In: Fifth International Conference on Internet and Web Applications and Services (ICIW 2010); Barcelona, Spain
Category: Proceedings
AbstractThe availability and reliability of Service-oriented architectures (SOA) depends on two factors: On the one hand, the availability and reliability of the services that provide a certain business functionality and on the other hand the services that make up the underlying SOA platform. For platforms that are supposed to form the core of mission-critical service-oriented applications, this implicates the need for mechanisms that can regulate the reliability- and availability-levels of the core services in changing conditions. In this paper, we discuss open questions about what kind of monitoring functionalities and service replication mechanisms should be integrated in SOA infrastructures. Therefore, the integration of concepts from peer-to-peer (P2P) computing is proposed: We present a self-organization extension that can improve the availability of the core services of SOA infrastructures, and we provide an experiment-based evaluation, showing some of the benefits that this extension can have in a critical scenario. The concepts are prototypically implemented as extensions of Apache Tuscany, which is a realization of the Service Component Architecture (SCA) standard.
Reference No.: 2010-1695
Lampe, U.; Schuller, D.; Eckert, J.; Steinmetz, R. (2010)
Optimizing Service Selection for Probabilistic QoS Attributes
In: 5th International Conference on Software and Data Technologies (ICSOFT 2010); Athen, Griechenland
Category: Proceedings
AbstractThe service selection problem (SSP) - i.e., choosing from sets of functionally equivalent services in order to fulfill certain business process steps based on non-functional requirements - has frequently been addressed in literature considering deterministic values for the Quality of Service (QoS) attributes. However, the usage of deterministic values does not reflect the uncertainty about the actual value of an attribute during execution, thus ignoring the risk of QoS violations. In the paper at hand, a simulative step, based on stochastic QoS attributes, is performed as complement for optimally solving the SSP using linear programming methods. With this two-step approach, uncertainties in the selected set of services can be explicitly revealed and addressed through repeated selection steps, thus allowing to prevent the violation of QoS restrictions much more effectively.
Reference No.: 2010-1694
Schuller, D. (2010)
Sichere und Zuverlässige Prozessausführung in Serviceorientierten Architekturen
In: Workshop Proceedings of the 2nd Central-European Workshop on Services and their Composition; Berlin
Category: Proceedings
Reference No.: 2010-1693
Eckert, J.; Repp, N.; Martin, W. (2010)
SOA Check 2010: Status quo - Trends - Perspektiven.
In: SOA - Mehr als nur flexible Softwarearchitekturen; ISBN 978-3-939358-63-3.
Category: Chapter in book
Reference No.: 2010-1686
Eckert, J.; Bachhuber, M.; Miede, A.; Papageorgiou, A.; Steinmetz, R. (2010)
Readiness and Maturity of Service-oriented Architectures in the German Banking Industry - A Multi-Participant Case Study.
In: IEEE International Conference on Digital Ecosystems and Technologies 2010 (IEEE DEST 2010); Dubai
Category: Proceedings
Reference No.: 2010-1685
Eckert, J.; Repp, N.; Martin, W. (2010)
SOA Check 2010: Status Quo und Trends im Vergleich zum SOA Check 2007 bis 2009.
In: IT-Verlag. ISBN 3-936052-35-2.
Category: Book
Reference No.: 2010-1684
Pahlke, I.; Beck, R.; Wolf, M. (2010)
Enterprise-Mashup-Systeme als Plattform für situative Anwendungen – Nutzen und Herausforderungen für Unternehmen
In: forthcoming in: WIRTSCHAFTSINFORMATIK 5/2010
Category: Publications in scientific journals
Reference No.: 2010-1681
Beimborn, D.; Joachim, N. (2010)
The Joint Impact of Service-Oriented Architectures and Business Process Management on Business Process Quality: An Empirical Evaluation and Comparison
In: Forthcoming in: Information Systems and e-Business Management Journal (ISeB); Springer, Berlin
Category: Publications in scientific journals
AbstractWhat is the interplay between business process management (BPM) and service-oriented architecture (SOA) in achieving high business process quality? In this paper, we empirically investigate the impact of both SOA and BPM on business process quality in terms of straight-through processing, business-to-business integration, quality control, as well as standardization and consolidation of business processes. For the empirical evaluation of our model, we use the data of 157 German service firms. The results show that the SOA paradigm has still received rather low adoption rates in the industry. However, SOA, BPM, and related information technologies have a direct positive impact on business process quality and the analysis provides evidence for the complementarities of BPM and SOA since interaction effects between them have an additional significant impact on business process quality. Consequently, firms having adopted SOA can more effectively apply BPM.
Reference No.: 2010-1662
Beimborn, D.; Joachim, N.; Schlosser, F. (2010)
The Role of SOA for BPO Intention – Proposing a Research Model
In: Forthcoming in: Lecture Notes in Business Information Processing, Springer; Berlin
Category: Chapter in book
Reference No.: 2010-1661
Pahlke, I.; Beck, R.; Wolf, M. (2010)
Enterprise Mashup Systems as Platforms for Situational Applications - Benefits and Challenges in the Business Domain
In: Forthcoming in Business & Information Systems Engineering 5/2010
Category: Publications in scientific journals
Reference No.: 2010-2
Schulte, S.; Lampe, U.; Eckert, J.; Steinmetz, R. (2010)
LOG4SWS.KOM: Self-Adapting Semantic Web Service Discovery for SAWSDL
In: IEEE 2010 Fourth International Workshop of Software Engineering for Adaptive Service-Oriented Systems (SEASS '10) at 2010 IEEE 6th World Congress on Services (SERVICES 2010); Miami, FL
Category: Proceedings [Find it]
AbstractIn recent years, a number of approaches to semantic Web service matchmaking have been proposed. Most of these proposals are based on discrete and thus relatively coarse Degrees of Match (DoMs). However, different basic assumptions regarding the generalization and specialization of semantic concepts in ontologies and their subsequent rating in matchmaking exist. Hence, most matchmakers are only properly suitable if these assumptions are met.
In this paper, we present an approach for mapping subsumption reasoning-based DoMs to a continuous scale. Instead of determining the numerical equivalents of the formerly discrete DoMs manually, these values are automatically derived using a linear regression model. This permits not only easy combination with other numerical similarity measures, but also allows to adapt matchmaking to different basic assumptions.
These notions are implemented and tested in LOG4SWS.KOM -- a matchmaker for SAWSDL that provides very good evaluation results with respect to Information Retrieval metrics such as precision and recall.
Reference No.: 2010-1637
Prifling, M. (2010)
Exploring Leadership Styles in Software Development Projects
In: Proceedings of the 14th Pacific Asia Conference on Information Systems (PACIS); Taipei, Taiwan
Category: Proceedings
Reference No.: 2010-1632
Prifling, M. (2010)
IT Project Portfolio Management - a Matter of Organizational Culture?
In: Proceedings of the 14th Pacific Asia Conference on Information Systems (PACIS); Taipei, Taiwan
Category: Proceedings
Reference No.: 2010-1631
Vykoukal, J.; Beck, R.; Wolf, M. (2010)
Impact of Pressure for Environmental Sustainability on Grid Assimilation – Empirical Results from the Financial Services Industry
In: Australasian Journal of Information Systems (forthcoming)
Category: Publications in scientific journals
Reference No.: 2010-1612
Zickert, F.; Beck, R. (2010)
Evaluation of the Goal-Oriented Requirements Engineering Method KAOS
In: Proceedings of the Sixteenth Americas Conference on Information Systems (AMCIS); Lima, Peru
Category: Proceedings
Reference No.: 2010-1611
Prifling, M. (2010)
The Organizational Culture’s Influence on Risks in IT Projects – a Structuration Perspective
In: Proceedings of the 16th Americas Conference on Information Systems (AMCIS), BEST PAPER AWARD NOMINEE; Lima, Peru
Category: Proceedings
Reference No.: 2010-1607
Beck, R.; Gregory, R. (2010)
IT-Integration bei Bankenfusion
In: WISU - Das Wirtschaftsstudium 4/10
Category: Publications in journals
Reference No.: 2010-1594
Schott, K.; Beck, R.; Gregory, R. (2010)
Management of Globally Distributed Software Development Projects in Multiple-Vendor Constellations
In: Proceedings of the Fourth Global Sourcing Workshop; Zermatt, Switzerland
Category: Proceedings
Reference No.: 2010-1581
Weber, S.; Beck, R.; Gregory, R. (2010)
Design Science in Research Cooperations with the Industry: Findings from three Prototyping Projects
In: DESRIST 2010: 5th International Conference on Design Science Research in Information Systems and Technology; St. Gallen, Switzerland
Category: Proceedings
AbstractA challenge that IS researchers face in general is to combine the goals of generating new scientific knowledge while at the same time producing practically relevant research results, e.g., in the form of IT artefacts. To combine rigor and relevance, researchers and practitioners need to collaborate to develop and employ methods that enable both the systematic generation of scientific insights and the knowledge exchange between academia and industry. In this paper, we present the findings of a research project where we entered into an industry-academic collaboration with the financial services industry involving three software development and implementation projects. We adopted a design science research approach to accompany the project and to guide the scientific discovery process. In the course of our research process we developed an innovative research model that integrates our experiences from the research project with existing design science research models.
Reference No.: 2010-1578
Zickert, F.; Beck, R. (2010)
Assessing Project Effort in Requirements Engineering: A Report on Design Research in Progress
In: DESRIST 2010: 5th International Conference on Design Science Research in Information Systems and Technology HERBERT A. SIMON BEST PAPER AWARD for the best paper of the conference; St. Gallen, Switzerland
Category: Proceedings
AbstractIn this paper we report on our design research in progress, where we have developed an artifact that assesses project effort resulting from requirements. Based on models used in the goal-oriented requirements engineering method KAOS, the artifact measures system size via function point analysis and analyzes system complexity via structural analysis. In addition, we provide theoretical explanations and empirically validate how size and structural complexity affect project effort. Overall effort depends on counted functions that must be transformed, since software development can be regarded as a transformation process where size matters. Structural complexity matters as well, since software development is also a complex problem, where effort spent depends on the structure of the problem. Insights from empirical evaluation in three software development projects are encouraging, wherefore we believe that the artifact appropriately assesses project effort. Furthermore, our artifact increases the utility of KAOS by providing additional information on project effort.
Reference No.: 2010-1577
Zickert, F.; Beck, R. (2010)
Because Effort Matters! - A Mapping Model for Assessing Project Effort in Requirements Engineering
In: Business & Information Systems Engineering (2:3), pp. 165-173
Category: Publications in scientific journals
AbstractProject effort is critical for the success of software development projects. It has a major impact on whether constraints in time and budget can be complied with. But although requirements affect project effort, requirements engineering (RE) methods are not capable of assessing project effort.
In this paper, we present our mapping model for assessing project effort (MMAPE). MMAPE incorporates into RE the assessment of project effort resulting from requirements for software development projects. It maps semantics of the RE method KAOS onto structures that are counted in function point analyses. We applied MMAPE in a case study on a software development project within a large financial institution. The validity of MMAPE is supported, since we found throughout consistent statements between information provided by MMAPE and data gathered from the case.
Reference No.: 2010-1576
Beck, R. (2010)
Can IT Lean Against the Wind? Lessons From the Global Financial Crisis
In: Communications of the ACM (53:5), pp. 38-40
Category: Publications in scientific journals
Reference No.: 2010-1559
Gewald, H. (2010)
The perceived benefits of business process outsourcing: An empirical study of the German banking industry
In: Strategic Outsourcing; Vol 3; Issue 2; 89-105
Category: Publications in scientific journals [Find it]
Reference No.: 2010-1549
Miede, A.; Ackermann, T.; Repp, N.; Abawi, D.; Steinmetz, R.; Buxmann, P. (2010)
Attacks on the Internet of Services – The Security Impact of Cross-organizational Service-based Collaboration
In: Tagungsband Multikonferenz Wirtschaftsinformatik (MKWI) 2010, Teilkonferenz Integriertes Ertrags-/Risikomanagement in automatisierten Geschäftsprozessen
Category: Proceedings
Reference No.: 2010-1542
Miede, A.; Nedyalkov, N.; Gottron, C.; König, A.; Repp, N.; Steinmetz, R. (2010)
A Generic Metamodel for IT Security - Attack Modeling for Distributed Systems
In: Proceedings of the Second International Workshop on Organizational Security Aspects (OSA) (In Conjunction with the Fifth International Conference on Availability, Reliability and Security, ARES 2010)
Category: Proceedings
Reference No.: 2010-1541
Wolf, M. (2010)
Determinants of Grid Assimilation in the Financial Services Industry - An Institutional Theory Perspective
In: Proceedings of the 18th European Conference on Information Systems (ECIS 2010); Pretoria, South Africa
Category: Proceedings
Reference No.: 2010-17
Gregory, R. (2010)
Design Science Research and the Grounded Theory Method: Characteristics, Differences, and Complementary Uses
In: Proceedings of the 18th European Conference on Information System (ECIS 2010); Pretoria, South Africa
Category: Proceedings
Reference No.: 2010-15
Gregory, R. (2010)
Review of the IS Offshoring Literature: The Role of Cross-Cultural Differences and Management Practices
In: Proceedings of the 18th European Conference on Information System (ECIS 2010); Pretoria, South Africa
Category: Proceedings
Reference No.: 2010-14
Vykoukal, J. (2010)
Grid Technology as Green IT Strategy? Empirical Results from the Financial Services Industry
In: Proceedings of the 18th European Conference on Information Systems (ECIS 2010); Pretoria, South Africa
Category: Proceedings
Reference No.: 2010-13
Marschollek, O.; Beck, R.; Gregory, R. (2010)
Psychological Contract Violation in IT Megaprojects in the Context of Public Private Partnerships – The German TollCollect Case
In: Proceedings of the 18th European Conference on Information System (ECIS 2010); Pretoria, South Africa
Category: Proceedings
AbstractPrior research in the context of public private partnerships has mainly focused on organizational and risk management aspects. Because there is a growing number of IT megaprojects in the context of public private partnerships, recent work concentrates on the explanation of the relationship between public and private partners and the success factors for these relations. However, we still have a lack of understanding on the causes and consequences for IT megaproject failure in the context of public private partnerships. In this exploratory, qualitative single-case study from the German TollCollect IT megaproject we draw on findings from the psychological contract theory to explain psychological contract violation as a threat to IT megaproject success. Our research model suggests that the management of common understanding and expectations, moderated by political and public pressure of a public-private environment, affects the stability of the psychological contract and therefore the success of an IT megaproject in the context of public private partnerships.
Reference No.: 2010-12
Schott, K.; Beck, R.; Gregory, R. (2010)
Conflict as Manifestation of Culture in Global IS Outsourcing Relationships
In: Proceedings of the 18th European Conference on Information System (ECIS 2010); Pretoria, South Africa
Category: Proceedings
AbstractThe objective of this paper is to propose a new way of analyzing culture in global IS outsourcing relationships. Previous research in IS has focused on the analysis of values, beliefs, customs, and other elements of culture whereas other inherent characteristics of culture, such as its dynamic and subjective nature, have been widely ignored. Hence, we suggest analyzing culture and identity in relation to action thereby accounting in more detail for the above mentioned characteristics. In particular, we develop a conceptual model describing the relationship between social identity and conflict in global IS outsourcing relationships. Propositions are derived from social identity and inter-personal conflict theory. The concept of cognitive flexibility (derived from cultural intelligence theory) is introduced as a moderator variable, influencing the relationship between social identity and inter-personal conflict. The conceptual model developed in this paper makes a theoretical contribution to the global IS outsourcing domain and serves as a basis for future empirical research.
Reference No.: 2010-11
Schlosser, F.; Wagner, H.; Beimborn, D.; Weitzel, T. (2010)
Role of Internal Business/IT Alignment and IT Governance for Service Quality in IT Outsourcing Arrangements
In: Proceedings of the 43rd Hawaii International Conference on System Sciences (HICSS); Kauai, HI, USA
Category: Proceedings
Reference No.: 2010-6
Wolf, M.; Vykoukal, J.; Beck, R. (2010)
Services Grid Competence as Driver of Business Agility in Turbulent Environments - A Conceptual Model in the Financial Services Industry
In: Proceedings of the Hawaii International Conference on System Sciences (HICSS-43), BEST PAPER AWARD NOMINEE; Koloa, Kauai, Hawaii, USA
Category: Proceedings
Reference No.: 2010-4
Weber, S.; Beck, R.; Wolf, M.; Vykoukal, J. (2010)
Portfolio Performance Measurement based on Service-Oriented Grid Computing: Developing a Prototype from a Design Science Perspective
In: Proceedings of the Hawaii International Conference on System Sciences (HICSS-43); Koloa, Kauai, Hawaii, USA
Category: Proceedings
Reference No.: 2010-3
