@article{StantchevMalek2011, author = {Stantchev, Vladimir and Malek, Miroslaw}, title = {Addressing Dependability throughout the SOA Life Cycle}, series = {IEEE Transactions on Services Computing}, volume = {4}, journal = {IEEE Transactions on Services Computing}, number = {2}, pages = {85 -- 95}, year = {2011}, abstract = {Dependability should be considered throughout the phases of the SOA life cycle. This article proposes the application of a service level management approach to address dependability and presents dependability-related activities for every stage (Model, Assemble, Deploy, and Manage) of the SOA life cycle. Furthermore, we describe the concepts and the formalisms that are behind these activities. Following these activities service providers and aggregators can offer optimized levels of dependability from their existing services and thus better meet user requirements.}, language = {en} } @article{PetruchTammStantchev2012, author = {Petruch, Konstantin and Tamm, Gerrit and Stantchev, Vladimir}, title = {Deriving In-Depth Knowledge from IT-Performance Data Simulations}, series = {International Journal of Knowledge Society Research (IJKSR)}, volume = {3}, journal = {International Journal of Knowledge Society Research (IJKSR)}, number = {2}, pages = {13 -- 29}, year = {2012}, abstract = {Knowledge of behavioral patterns of a system can contribute to an optimized management and governance of the same system, or of similar systems. While human experience often manifests itself as intuition, intuition can be notoriously misleading, particularly in the case of quantitative data and subtle relations between different data sets. This article augments managerial intuition with knowledge derived from a specific byproduct of automated transaction processing performance and log data of the processing software. More specifically, the authors consider data generated by incident management and ticketing systems within IT support departments. The authors' approach utilizes a rigorous analysis methodology based on System Dynamics. This allows for identifying real causalities and hidden dependencies between different datasets. The authors can then use them to derive and assemble knowledge bases for improved management and governance in this context. This approach is able to provide more in depth insights as compared to typical data visualization and dashboard techniques. In the experimental results section, the authors demonstrate the feasibility of the approach. It is applied on real life datasets and log files from an international telecommunication provider and considered different improvements in management and governance that result from it.}, language = {en} } @article{StantchevStantcheva2012, author = {Stantchev, Vladimir and Stantcheva, Lubomira}, title = {Extending Traditional IT-Governance Knowledge Towards SOA and Cloud Governance}, series = {International Journal of Knowledge Society Research}, volume = {3}, journal = {International Journal of Knowledge Society Research}, number = {2}, pages = {30 -- 43}, year = {2012}, abstract = {Enterprises today often strive to keep up with the paces of technological development. A particular case in point is the IT function where traditional governance approaches are often questioned by technology trends. Examples for such trends in the last ten years are the service-oriented architecture (SOA) and cloud computing. The introduction of SOA in the enterprise was one of the key enablers for cloud computing. Therefore, it can serve as a natural fit for bringing traditional IT governance approaches forward to the challenges of cloud governance. This article presents an approach for extending IT governance mindsets to the areas of SOA and cloud governance. It allows an IT organisation the adaptation and the continuous usage of already established governance knowledge and models during the adoption of cloud computing solutions. The authors also present an application case study where they demonstrate the feasibility of the approach in real-life scenarios in the context of an international telecommunication provider.}, language = {en} } @article{PetruchStantchevTamm2011, author = {Petruch, Konstantin and Stantchev, Vladimir and Tamm, Gerrit}, title = {A Survey on IT-Governance Aspects of Cloud Computing}, series = {International Journal of Web and Grid Services}, volume = {7}, journal = {International Journal of Web and Grid Services}, number = {3}, pages = {268 -- 303}, year = {2011}, abstract = {The purpose of this work is to provide a representative survey of current trends in the perception, assessment and adoption of cloud computing within the enterprise. Cloud computing can be regarded as the general principle for using and providing web and grid services. First, we provide a meta-study, where we evaluate existing and published empirical studies. Furthermore, we conduct and evaluate an own empirical study with a representative group of European and International enterprises. Key findings of the work include the significantly higher importance of Business Drivers for the adoption of cloud computing, as compared to Technical Drivers.}, language = {en} } @incollection{StantchevTamm2011, author = {Stantchev, Vladimir and Tamm, Gerrit}, title = {Addressing Non-Functional Properties of Services in IT Service Management}, series = {Non-Functional Properties in Service Oriented Architecture: Requirements, Models and Methods}, booktitle = {Non-Functional Properties in Service Oriented Architecture: Requirements, Models and Methods}, publisher = {IGI Global}, address = {Hershey}, publisher = {SRH Berlin University of Applied Sciences}, pages = {324 -- 334}, year = {2011}, abstract = {A key point that remains to be addressed is the assurance of service levels for end-user applications that rely on these provider models. This chapter describes an approach for addressing non-functional properties (NFPs) of services in service-oriented architectures (SOA). The approach is based on reference models such as the IT Infrastructure Library (ITIL) and the SOA life cycle model. It has been applied in several industrial settings in the telecommunications sector.}, language = {en} } @incollection{BochenekTamm2009, author = {Bochenek, Adam and Tamm, Gerrit}, title = {Social Media Marketing Services for Mobile Applications}, series = {Wireless Communication and Information: Radio Engineering and Multimedia Applications}, booktitle = {Wireless Communication and Information: Radio Engineering and Multimedia Applications}, editor = {Sieck, J{\"u}rgen}, publisher = {Verlag Werner H{\"u}lsbusch}, address = {Boizenburg}, publisher = {SRH Berlin University of Applied Sciences}, pages = {185 -- 202}, year = {2009}, abstract = {Keine Angabe No details}, language = {en} } @book{UlrichTamm2008, author = {Ulrich, Peter and Tamm, Gerrit}, title = {Corporate- und Webinterface Design f{\"u}r ein Online-Unternehmen: Analyse, Konzeption und Realisierung am Beispiel des Online-Jobportals absolvent.de}, publisher = {VDM Verlag Dr. M{\"u}ller}, address = {Saarbr{\"u}cken}, isbn = {978-3-639-04088-3}, publisher = {SRH Berlin University of Applied Sciences}, pages = {105}, year = {2008}, abstract = {Absolvent.de ist ein seit 1998 bestehendes Online-Jobportal, welches sich auf die Vermittlung von Jobs und Praktika f{\"u}r Hochschulabsolventen spezialisiert hat. Im Zuge eines bevorstehenden Relaunchs sollen neben den Funktionalit{\"a}ten und eingesetzten Technologien auch das Corporate Design und das Webinterface Design erneuert werden. Die Entwicklung von Corporate Design und Webinterface Design f{\"u}r absolvent.de ist Gegenstand dieser Arbeit. Dazu werden im theoretischen Teil der Arbeit objektive Anforderungen und Funktionen des Corporate Designs und des Webinterface Designs genannt und erl{\"a}utert. Im praktischen Teil werden am Beispiel des Online-Jobportals absolvent.de systematische Methoden f{\"u}r die Entwicklung eines den Anforderungen entsprechenden Corporate- und Webinterface Designs aufgezeigt und angewendet. Anhand des systematischen Vorgehens bei der Designentwicklung wird die schrittweise Verringerung der Komplexit{\"a}t der Aufgabenstellung deutlich und die entwickelten Ergebnisse werden plausibel und nachvollziehbar. Das Buch dient als Leitfaden bei der Entwicklung von Corporate Design und Webinterface Design und richtet sich somit an Grafik-, Web- und Interfacedesigner.}, language = {de} } @incollection{TammUllrich2012, author = {Tamm, Gerrit and Ullrich, Sebastian}, title = {Agile Software Architecture for Interactive Media Facades}, series = {Urban media cultures}, booktitle = {Urban media cultures}, editor = {Pop, Susa}, publisher = {avedition}, address = {Ludwigsburg}, publisher = {SRH Berlin University of Applied Sciences}, pages = {176 -- 179}, year = {2012}, abstract = {Keine Angabe No details}, language = {en} } @incollection{WinklerSchoendienstTamm2009, author = {Winkler, Till J. and Sch{\"o}ndienst, Valentin and Tamm, Gerrit}, title = {Wireless City Berlin: solutions for a Smarter City}, series = {Wireless Communication and Information}, booktitle = {Wireless Communication and Information}, editor = {Sieck, J{\"u}rgen}, publisher = {Verlag Werner H{\"u}lsbusch}, address = {Boizenburg}, url = {http://nbn-resolving.de/urn:nbn:de:0298-opus4-6441}, publisher = {SRH Berlin University of Applied Sciences}, pages = {207 -- 220}, year = {2009}, abstract = {Cities in Europe face the challenge of combining competitiveness and sustainable urban development. Technology such as wireless communication and ubiquitous computing is playing an increasingly important role in this context, helping to co-create solutions which can make the urban space „smarter‟. The city of Berlin is launching the project „Wireless City Berlin‟ (WCB) to demonstrate the potential of such technologies in multiple application scenarios. This paper analyses the terms „smart‟ and „wireless‟ with respect to urban development and introduces a typology of wireless city initiatives. Further, it presents the main work areas of the WCB project and relates it to other wireless city initiatives in Europe.}, language = {en} } @incollection{GuentherTamm2000, author = {G{\"u}nther, Oliver and Tamm, Gerrit}, title = {A Framework for ASP-Marketplaces}, series = {Cooperative Information Systems}, booktitle = {Cooperative Information Systems}, editor = {Scheuermann, Peter}, publisher = {Springer}, address = {Berlin}, publisher = {SRH Berlin University of Applied Sciences}, pages = {114 -- 119}, year = {2000}, abstract = {For organizations that plan to use online software applications via Internet one of the most important questions is, "How do you choose the right ASP for the companies corporate needs?". ASP marketplaces offer a plurality of pricing models and different levels of service. From whole system and whole service to single applications and methods, every digital product and service can be provided through an ASP marketplace. There is a need for ASP marketplaces, which gives the user a transparent insight into the ASP market. In this paper we define Application Service Providing in the context of Outsourcing. Then we analyze relevant software classes for ASP marketplaces. Finally we will set criteria to compare different levels of service of ASP marketplace. This paper gives an overview of key characteristics ASP marketplace provider must take into account by preparing the business process in order to successfully deliver application services.}, language = {en} }