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Zeitschriftenbeiträge

Fabian Christ and Benjamin Nagel and Reto Bachman-Gmür and Rupert Westenthaler: Semantisches Content Management. In JavaMagazin, vol. 8, pp. 96--100 (2012)
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@article{Christ2012, author = {Fabian Christ and Benjamin Nagel and Reto Bachman-Gmür and Rupert Westenthaler}, title = {Semantisches Content Management}, journal = {JavaMagazin}, year = {2012}, volume = {8}, pages = {96--100}, month = {August} }

Rezensierte Konferenzbeiträge

Benjamin Nagel and Klaus Schröder and Steffen Becker and Stefan Sauer and Gregor Engels: Kooperative Methoden- und Werkzeugentwicklung zur Cloudmigration von proprietären Anwendungskomponenten. In Software Engineering & Management 2015. , vol. LNI-239, pp. 255--260 (2015) Software Engineering & Management 2015 17.-20. März 2015, Dresden
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@inproceedings{NSBSE-2015, author = {Benjamin Nagel and Klaus Schröder and Steffen Becker and Stefan Sauer and Gregor Engels}, title = {Kooperative Methoden- und Werkzeugentwicklung zur Cloudmigration von proprietären Anwendungskomponenten}, booktitle = {Software Engineering & Management 2015}, year = {2015}, volume = {LNI-239}, pages = {255--260}, month = {März}, organization = {GI}, note = {Software Engineering & Management 2015 17.-20. März 2015, Dresden} }

Die cloudbasierte Bereitstellung von Funktionen als Software-as-a-Service (SaaS) ermöglicht die Erschließung neuer Kundenpotenziale bei kleinen und mittelgroßen Unternehmen.

Fabian Pittke and Benjamin Nagel and Gregor Engels and Jan Mendling: Linguistic Consistency of Goal Models. In Proceedings of the 19th International EMMSAD Conference. Springer (2014)
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@inproceedings{EMMSAD2014_Nagel, author = {Fabian Pittke and Benjamin Nagel and Gregor Engels and Jan Mendling}, title = {Linguistic Consistency of Goal Models}, booktitle = {Proceedings of the 19th International EMMSAD Conference}, year = {2014}, publisher = {Springer} }

Benjamin Nagel and Christian Gerth and Jennifer Post and Gregor Engels: Ensuring Consistency Among Business Goals and Business Process Models. In Proceedings of the 17th IEEE International EDOC Conference (EDOC'13). IEEE Computer Society, pp. 17-26 (2013)
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@inproceedings{EDOC13_Nagel, author = {Benjamin Nagel and Christian Gerth and Jennifer Post and Gregor Engels}, title = {Ensuring Consistency Among Business Goals and Business Process Models}, booktitle = {Proceedings of the 17th IEEE International EDOC Conference (EDOC'13)}, year = {2013}, pages = {17-26}, publisher = {IEEE Computer Society} }

The paradigm of service-oriented architectures has emerged as an architectural style for designing enterprise applications. Requirements engineering for such applications comprises the specification of business goal models representing stakeholder objectives and the operationalization to business process models that specify the required composition of services. Inconsistencies between business goals and derived business processes can lead to service compositions that are not in line with the actual stakeholder objectives. For preserving consistency it is required to consider logical and temporal dependencies among goals (e.g. the order in which they need to be achieved) in the derivation of business processes. In previous work, we provided a technique for the elicitation and specification of dependencies between business goals. Extending this approach, we aim at validating the consistency between business goal models and business process models regarding these dependencies. In this paper, we present a pattern-based approach for the automated generation of verifiable business process quality constraints from business goal models. We describe how these constraints can be used to check the consistency between business goals and business processes and demonstrate the applicability of our approach in a case study by using the implemented tool support.

Markus Luckey and Benjamin Nagel and Christian Gerth and Gregor Engels: Adapt Cases: Extending Use Cases for Adaptive Systems. In Proceeding of the 6th international symposium on Software engineering for adaptive and self-managing systems. ACM (New York, NY, USA), SEAMS '11, pp. 30--39 (2011)
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@inproceedings{adaptcases_seams11, author = {Markus Luckey and Benjamin Nagel and Christian Gerth and Gregor Engels}, title = {Adapt Cases: Extending Use Cases for Adaptive Systems}, booktitle = {Proceeding of the 6th international symposium on Software engineering for adaptive and self-managing systems}, year = {2011}, series = {SEAMS '11}, pages = {30--39}, address = {New York, NY, USA}, month = {May}, publisher = {ACM} }

Adaptivity is prevalent in today's software. Mobile devices self-adapt to available network connections, washing machines adapt to the amount of laundry, etc. Current approaches for engineering such systems facilitate the specification of adaptivity in the analysis and the technical design. However, the modeling of platform independent models for adaptivity in the logical design phase remains rather neglected causing a gap between the analysis and the technical design phase. To overcome this situation, we propose an approach called Adapt Cases. Adapt Cases allow the explicit modeling of adaptivity with dedicated means, enabling adaptivity to gather attention early in the software engineering process. Since our approach is based on use cases it is easy adoptable in new and even running projects that use the UML as a specification language, and additionally, can be easily incorporated into model-based development environments.

Fabian Christ and Benjamin Nagel: A Reference Architecture for Semantic Content Management Systems. In Proceeding of the Enterprise Modelling and Information Systems Architectures Workshop 2011 (EMISA'11), Hamburg (Germany). GI, LNI, vol. P-190, pp. 135--148 (2011)
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@inproceedings{Christ2011a, author = {Fabian Christ and Benjamin Nagel}, title = {A Reference Architecture for Semantic Content Management Systems}, booktitle = {Proceeding of the Enterprise Modelling and Information Systems Architectures Workshop 2011 (EMISA'11), Hamburg (Germany)}, year = {2011}, volume = {P-190}, series = {LNI}, pages = {135--148}, publisher = {GI} }

Content Management Systems (CMS) lack the ability of managing semantic information that is part of the content stored in a CMS. On the other hand, a lot of research has been done in the field of Information Extraction (IE) and Information Retrieval (IR), respectively. Additionally, the vision of the Semantic Web yields to new software components that make semantic technology usable for application developers. In this paper, we combine IE/IR concepts with the technologies of the Semantic Web and propose a new family of CMS, called Semantic CMS (SCMS), with advanced semantic capabilities. We provide a reference architecture for SCMS and prove its value along two implementations. One implementation was created as part of the Interactive Knowledge Stack research project and another one in a one-year student project exploring the design of an SCMS for the software engineering domain.

Rezensierte Workshopbeiträge

Benjamin Nagel and Christian Gerth and Gregor Engels: Goal-driven Composition of Business Process Models. In Proceedings of the 9th Workshop on Engineering Service-Oriented Applications (WESOA 2013) (accepted for application). (2013)
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@inproceedings{WESOA13_Nagel, author = {Benjamin Nagel and Christian Gerth and Gregor Engels}, title = {Goal-driven Composition of Business Process Models}, booktitle = {Proceedings of the 9th Workshop on Engineering Service-Oriented Applications (WESOA 2013) (accepted for application)}, year = {2013} }

Benjamin Nagel and Christian Gerth and Jennifer Post and Gregor Engels: Kaos4SOA - Extending KAOS Models with Temporal and Logical Dependencies. In Proceedings of the CAiSE'13 Forum at the 25th International Conference on Advanced Information Systems Engineering (CAiSE'13). CEUR-WS.org, CEUR Workshop Proceedings, vol. 998, pp. 9-16 (2013)
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@inproceedings{CAiSE13_Nagel, author = {Benjamin Nagel and Christian Gerth and Jennifer Post and Gregor Engels}, title = {Kaos4SOA - Extending KAOS Models with Temporal and Logical Dependencies}, booktitle = {Proceedings of the CAiSE'13 Forum at the 25th International Conference on Advanced Information Systems Engineering (CAiSE'13)}, year = {2013}, volume = {998}, series = {CEUR Workshop Proceedings}, pages = {9-16}, publisher = {CEUR-WS.org} }

Benjamin Nagel and Christian Gerth and Enes Yigitbas and Fabian Christ and Gregor Engels: Model-driven Specification of Adaptive Cloud-based Systems. In Proceedings of 1st International Workshop on Model-Driven Engineering for High Performance and Cloud Computing (MDHPCL) at MODELS'12. (2012)
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@inproceedings{nagel_mdhpcl12, author = {Benjamin Nagel and Christian Gerth and Enes Yigitbas and Fabian Christ and Gregor Engels}, title = {Model-driven Specification of Adaptive Cloud-based Systems}, booktitle = {Proceedings of 1st International Workshop on Model-Driven Engineering for High Performance and Cloud Computing (MDHPCL) at MODELS'12}, year = {2012} }

Benjamin Nagel: Semi-automatische Ableitung externer Anpassungsmechanismen für selbst-adaptive Systeme. In Proceedings of the Software Engineering 2011 (SE 2011), Karlsruhe (Germany). Gesellschaft für Informatik (GI) (Bonn), Lecture Notes in Informatics (2011)
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@inproceedings{Nagel2011, author = {Benjamin Nagel}, title = {Semi-automatische Ableitung externer Anpassungsmechanismen für selbst-adaptive Systeme}, booktitle = {Proceedings of the Software Engineering 2011 (SE 2011), Karlsruhe (Germany)}, year = {2011}, series = {Lecture Notes in Informatics}, address = {Bonn}, publisher = {Gesellschaft für Informatik (GI)} }