TY - RPRT A1 - Wulf, Alexander J. T1 - A Comparative Approach to the Protection of Fashion Innovations T2 - UC Berkeley Recent Work N2 - This paper determines the relevance of industrial property rights to the development of innovations in the fashion industry. It examines how the level of innovation can remain high despite a free exchange of intellectual property – fashion designs – within the industry: The importance of innovation for a fashion business in the industry is determined by the choice of it’s competitive strategy. That is, either to be an innovator who creates fashion innovations or to be an imitator who adopts them once they have proven their ability to prevail in the market. The success of innovators depends largely on their ability to react to fashion trends, reinforced by the social role of fashion products and to the extent of their potential to confer status on the owner. Thus the duration of a temporary monopoly gained by an innovation is limited not only by the market entrance of imitators – a period of time that can be prolonged by making use of industrial property rights protection – but also by the constant changes in fashion, a process barely affected by the utilization of intellectual property rights protection. A monopoly maintained by using intellectual property rights might very well not extend the product life cycle beyond the limits posed by the shifting changes of fashion; moreover, an extended life cycle maintained in these circumstances could seriously limit the innovators agility in satisfying consumer demand in line with fashion trends and provoke an inappropriate allocation of resources to developing unfashionable innovations, resulting in a much greater risk of product failure. KW - Fashion KW - Comparative Law KW - Intellectual Property Rights KW - Innovation Y1 - 2007 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-303 SP - 1 EP - 25 ER - TY - CHAP A1 - Brüning, Stefan A1 - Zapotoczky, Johannes A1 - Ibach, Peter A1 - Stantchev, Vladimir T1 - Cooperative Positioning with MagicMap T2 - Workshop on Positioning, Navigation and Communication 2007 (WPNC'07) N2 - We present MagicMap, a cooperative, hybrid positioning system developed at the Humboldt-University in Berlin. While most other positioning systems are limited to specific scenarios and technologies our system provides means to incorporate any available wireless networking technology. Currently, MagicMap supports WLAN, RFID, and ZigBee as wireless technologies for positioning and Linux, Windows, and Windows CE as platforms. Position calculation and exchange is based on a cooperative approach allowing an open internet community to share the required data. KW - Cooperative KW - Hybrid KW - Indoor KW - Positioning Y1 - 2007 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-695 ER - TY - CHAP A1 - Price, Michael A1 - Tamm, Gerrit A1 - Stantchev, Vladimir T1 - SaaS Marketplaces - visions from theory and experience from practice T2 - Proceedings of the 19th Biennial Conference of the International Telecommunications Society (ITS2012), Bangkok N2 - Cloud computing, especially Software-as-a-Service (SaaS), changes the IT processes of companies for application deployment, access, usage, maintenance, governance and management. In an age of Bring-Your-Own-Device, small businesses through to globally operating companies increasingly support their employees and customers with SaaS-applications that allow access to internal and external business information. Whether employees are in the office, at a client facility, at home or on the road, they need fast, easy access to business applications with any type of device. SaaS offers companies an interesting alternative to classical on-premise IT solutions. Cloud computing provides innovative applications, high connectivity and performance, cost reduction, flexibility and fast time to market with a minimum of effort. Cloud computing is a special form of outsourcing that has its roots in the fifties. Ten years ago similar concepts to cloud computing e.g. Application Service Providing (ASP) appeared and failed. But it seems that the willingness to use cloud computing is now much higher and the cost pressure effects of the financial crisis also motivate decision makers in companies to focus on cloud computing. This contribution presents the results of actual scientific literature investigations alongside interviews with owners of Software-as-a-Service Marketplaces. It describes several types of SaaS marketplaces using different business models to bring together customers and providers. It shows that SaaS marketplaces are two-sided and demonstrates how platforms are emerging that bundle features into significant value propositions for both sides. This work is relevant to firms who seek business solution recommendations beyond the focus of their on-premise-focussed advisors. It is also relevant for owners and potential owners of SaaS marketplaces and SaaS providers exploring alternatives in their distribution mix. KW - SaaS KW - Marketplace KW - Cloud Computing KW - Two-Sided Market Y1 - 2012 N1 - Online: https://www.econstor.eu/bitstream/10419/72513/1/742586251.pdf ER - TY - CHAP A1 - Stantchev, Vladimir A1 - Tamm, Gerrit T1 - Towards Ambient Intelligence and the Internet of Services in Healthcare N2 - The emergence of the Internet of Services and the Internet of Devices opens new possibilities for societal computung scenarios. Ambient Intelligence (AmI) is a vision of an environment that puts the needs of the user in the center of the technological design process. An AmI environment consists of ubiquitous distributed devices such as sensors, displays, data memories which are embedded in everyday objects like walls, clothes, tables or the pavement. These devices are interconnected and seamlessly deliver applications and services to the user. AmI emphasizes the intelligence of the environments interfaces and the intelligence that can be achieved by correlating context information from different data sources. In this work we present an approach to transfer the AmI vision to the public services sector using the paradigm of service orientation and Cloud Computing. Based on scenarios in the healthcare sector the benefits and challenges of such transfer are presented. KW - Internet of Services KW - Internet of Devices KW - Ambient Intelligence KW - Public Services KW - Health Care Y1 - 2010 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-727 ER - TY - CHAP A1 - Stantchev, Vladimir T1 - Service-based Systems in Clinical Environments T2 - Information Service Design Symposium 2008 N2 - In this report we present an architectural approach to add quality-of-service (QoS) assurance and location awareness to service-based systems within existing clinical infrastructures. To address typical design requirements of such systems (e.g., cooperating services, performance and availability) the work proposes a service-oriented architecture (SOA) as architectural concept and architectural translucency to provide stable QoS. We evaluate position sensing systems, QoS assurance approaches and present design principles for service-based health care applications. Furthermore, we present a clinical application scenario and an architectural approach to integrate existing infrastructure into a human centric assistance system. KW - Public Services KW - Quality of Service KW - Health Care KW - Location Awareness Y1 - 2008 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-759 ER - TY - JOUR A1 - Stantchev, Vladimir T1 - Wissen und Technologieaffinität: Herausforderungen bei der Realisierung eines ambienten Ver- und Entsorgungssystems für die Immobilien des Landes Berlin N2 - Berlin ist eine der großen europäischen Hauptstädte mit einem breiten Angebot an öffentlichen Dienstleistungen (Public Services). 2003 hat der Berliner Senat den „Landesbetrieb für Gebäudebewirtschaftung" (LfG) gegründet, der die Facility Management Aktivitäten des Landes bündelt. Seit 2005 wird zusammen mit der TU Berlin der Einsatz innovativer Informations-technologien (IT) in diesem Bereich konsequent erweitert. Die Kombination aus einer unauffälligen (unobtrusiven) IT-Infrastruktur und einer flächendeckenden und kontextbezogenen Einsetzbarkeit wird oft als ambient bezeichnet und stellt sehr spezifische Anforderungen an die Gestaltung der Mensch-Maschine-Interaktionen. In diesem Beitrag wird die Gestaltung eines Systems für die Ver- und Entsorgung als Teil der Facility Management Aufgaben beschrieben. Ausgehend von der Beschreibung unseres Vorgehensmodells zur Erhebung der Ist-Prozesse und Usability Evaluation, werden in einem zweiten Schritt Nutzerprofile erstellt und die Ist-Prozesse um diese erweitert. Die zweite Hälfte des Beitrags beschreibt das eingeführte, ambiente Ver- und Entsorgungssystem, zusammen mit einigen Interaktionsszenarien. Abschließend erfolgt eine Evaluierung der Wirtschaftlichkeit und der Usability des Systems. N2 - Berlin is one of the major European capitals with a broad range of public services. In 2003 the „Landesbetrieb für Gebäudebewirtschaftung" (LFG) was established by the Berlin Senate, which bundles the facility management activities of the country. Since 2005 the use of innovative information technologies (IT) within this range are consistently expanded together with the TU Berlin. The combination of an inconspicuous (unobtrusive) IT infrastructure and a surface-covering and contextual applicability is often designated as ambient and makes very specific demands for the design of human-machine interactions. In this article the design of a system for the maintenance and disposal is described as a part of facility management tasks. Based on the description of our process model for the collection of the actual processes and usability evaluation, in a second step user profiles are provided and the actual processes by these are extended. The second half of the article describes the imported, ambient maintenance and disposal system, together with some interaction scenarios. Finally, an evaluation of the efficiency and usability of the system occurs. KW - Innovative Informationstechnologien KW - Mensch-Maschine-Interaktion KW - Serviceorientierte Architektur KW - Usability Evaluation KW - Ambiente Systeme Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-2645 SP - 335 EP - 338 ER - TY - CHAP A1 - Mejia, F. A1 - Glasberg, Ronald A1 - Tamm, Gerrit A1 - Lopez, Gabriel J. T1 - Readiness Level to adopt Smart Grid Technologies: Study for the City of Medellin N2 - The smart grid development in Latin America shows a big gap in the amount of research and development when compared with the USA and EU where the topic has been active for almost 10 years. In this context two different models and expert surveys are used in this study to evaluate the readiness level of the city of Medellin to adopt smart grid technologies. The results of this study show that the City has the utilities, the knowledge, the universities and the human resource to become a role model in the region. But an effort to integrate all the actors and impulse a common agenda is required. The utility companies need to lead this development, but regulators, academia and industry must back up this endeavor and enable Medellin to lead the power grid development of the next years in the region. KW - Power Distribution KW - Power Grids KW - Power System Economics KW - Power System Planning KW - Smart Grids Y1 - 2011 SN - 978-1-4577-1802-1 N1 - Volltext aus urheberrechtlichen Gründen nicht verfügbar. Fulltext due to copyright not available. ER - TY - CHAP A1 - Stantchev, Vladimir A1 - Stantcheva, Lubomira T1 - Applying IT-Governance Frameworks for SOA and Cloud Governance T2 - Communications in Computer and Information Science N2 - Service-oriented architecture (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. In this work we present an approach for mapping IT governance mindsets to the aspects of SOA governance. It allows an IT organisation the adaptation and the continuous usage of already established governance models during the adoption of cloud computing solutions. We also present an application case study where we demonstrate the feasibility of the approach in real-life scenarios in the context of an international telecommunication provider. T3 - Communications in Computer and Information Science - 278/1 KW - Collaborative Learning KW - Intelligent Tutoring Systems KW - Social Network Analysis Y1 - 2012 N1 - Online: https://www.researchgate.net/publication/280080082_Applying_IT-Governance_Frameworks_for_SOA_and_Cloud_Governance SP - 398 EP - 407 ER - TY - CHAP A1 - Stantchev, Vladimir A1 - Tamm, Gerrit A1 - Petruch, Konstantin ED - Lytras, Miltiadis D. T1 - Simulation-Based IT Process Governance T2 - Communications in Computer and Information Science N2 - IT departments within enterprises often utilize incident management and ticketing systems. While performance data from such systems is often stored in logfiles it is rarely evaluated extensively. In this work we assess the applicability of an approach for extended evaluation of logged data from such systems. Our evaluation is focused on Key Performance Indicators (KPIs) and aims to discover more in-depth insights as compared to typical data visualization and dashboard techniques. We also present a practical case study where we demonstrate the feasibility of the approach using real-life logfiles from an international telecommunication provider. Our modeling methodology is based on the approach of System Dynamics. T3 - Communications in Computer and Information Science - 278/2 KW - Simulation KW - IT Processes KW - IT Governance KW - Incident Management Y1 - 2012 N1 - Online: https://www.researchgate.net/publication/286454680_Simulation-based_IT_process_governance VL - 278 SP - 206 EP - 215 PB - Springer CY - Berlin ER - TY - JOUR A1 - Stantchev, Vladimir A1 - Tamm, Gerrit A1 - Petruch, Konstantin T1 - Assessing and governing IT-staff behavior by performance-based simulation JF - Computers in Human Behavior N2 - When optimizing IT operations organizations typically aim to optimize resource usage. In general, there are two kinds of IT resources - IT infrastructures and IT staff. An optimized utilization of these resources requires both quantitative and qualitative analysis. While IT infrastructures can offer raw data for such analyses, data about IT staff often requires additional preparation and augmentation. One source for IT staff-related data can be provided by incident management and ticketing systems. While performance data from such systems is often stored in logfiles it is rarely evaluated extensively. In this article we propose the usage of such data sources for IT staff behavior evaluation and also present the relevant augmentation techniques. We claim that our approach is able to provide more in-depth insights as compared to typical data visualization and dashboard techniques. Our modeling methodology is based on the approach of system dynamics. We also provide formal models and simulation results where we demonstrate the feasibility of the approach using real-life logfiles from an international telecommunication provider. KW - Governance KW - IT-Staff KW - Simulation KW - Human Aspect KW - System Dynamics Y1 - 2012 N1 - Online: https://www.researchgate.net/publication/257252766_Assessing_and_governing_IT-staff_behavior_by_performance-based_simulation VL - 29 IS - 2 SP - 473 EP - 485 ER - TY - JOUR A1 - Stantchev, Vladimir A1 - Tamm, Gerrit T1 - Reducing Information Asymmetry in Cloud Marketplaces JF - International Journal of Human Capital and Information Technology Professionals (IJHCITP) N2 - Cloud Computing is emerging as a predominant paradigm for obtaining and providing computing functionality in the enterprise. Organizations that are planning to use cloud computing offerings struggle with the question “How do I choose the right offering?” Cloud offerings exhibit a variety of pricing models and different levels of service and functionality. In this article the authors define first Cloud Computing in the context of IT Governance. Then they set criteria to compare different offerings at the level of Software-as-a-Service (SaaS). This is an important precondition for the reduction of the verifiable information asymmetry and uncertainty in the cloud market. Besides deficiencies on the supply side, regarding configuration, display and communication of service bundles, the limited knowledge of potential buyers is main reason for the modest adoption. The authors apply strategies derived from information economics to reduce this asymmetry by integrating information substitutes in the service marketplace description, thereby transforming experience and credence qualities into search qualities. KW - Cloud Computing KW - Cloud Marketplaces Y1 - 2012 N1 - Online: https://www.researchgate.net/publication/262206518_Reducing_Information_Asymmetry_in_Cloud_Marketplaces VL - 3 IS - 4 SP - 1 EP - 10 ER - TY - JOUR A1 - Stantchev, Vladimir A1 - Malek, Miroslaw T1 - Addressing Dependability throughout the SOA Life Cycle JF - IEEE Transactions on Services Computing N2 - 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. KW - SOA Life Cycle KW - Service Level Management KW - Software Dependability Y1 - 2011 N1 - Online: https://www.researchgate.net/publication/220595087_Addressing_Dependability_throughout_the_SOA_Life_Cycle VL - 4 IS - 2 SP - 85 EP - 95 ER - TY - JOUR A1 - Petruch, Konstantin A1 - Tamm, Gerrit A1 - Stantchev, Vladimir T1 - Deriving In-Depth Knowledge from IT-Performance Data Simulations JF - International Journal of Knowledge Society Research (IJKSR) N2 - 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. KW - Cloud Governance KW - IT Governance KW - Knowledge Extension KW - Simulation KW - System Dynamics Y1 - 2012 N1 - Online: https://www.researchgate.net/publication/276183994_Deriving_In-Depth_Knowledge_from_IT-Performance_Data_Simulations VL - 3 IS - 2 SP - 13 EP - 29 ER - TY - JOUR A1 - Stantchev, Vladimir A1 - Stantcheva, Lubomira T1 - Extending Traditional IT-Governance Knowledge Towards SOA and Cloud Governance JF - International Journal of Knowledge Society Research N2 - 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. KW - Cloud Governance KW - IT Governance KW - Knowledge Extension KW - SOA Governance KW - Technological Development Y1 - 2012 N1 - Online: https://www.researchgate.net/publication/269560351_Extending_Traditional_IT-Governance_Knowledge_Towards_SOA_and_Cloud_Governance VL - 3 IS - 2 SP - 30 EP - 43 ER - TY - JOUR A1 - Petruch, Konstantin A1 - Stantchev, Vladimir A1 - Tamm, Gerrit T1 - A Survey on IT-Governance Aspects of Cloud Computing JF - International Journal of Web and Grid Services N2 - 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. KW - IT Governance KW - Cloud Computing KW - Web Services Management KW - Information Technology KW - Business Drivers Y1 - 2011 N1 - Online: https://www.researchgate.net/publication/220403226_A_survey_on_IT-governance_aspects_of_cloud_computing VL - 7 IS - 3 SP - 268 EP - 303 ER - TY - CHAP A1 - Stantchev, Vladimir A1 - Tamm, Gerrit T1 - Addressing Non-Functional Properties of Services in IT Service Management T2 - Non-Functional Properties in Service Oriented Architecture: Requirements, Models and Methods N2 - 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. KW - Non-Functional Properties KW - IT Service KW - Service-Oriented Architecture Y1 - 2011 N1 - Online: https://www.researchgate.net/publication/286454960_Addressing_Non-Functional_Properties_of_Services_in_IT_Service_Management SP - 324 EP - 334 PB - IGI Global CY - Hershey ER - TY - CHAP A1 - Bochenek, Adam A1 - Tamm, Gerrit ED - Sieck, Jürgen T1 - Social Media Marketing Services for Mobile Applications T2 - Wireless Communication and Information: Radio Engineering and Multimedia Applications N2 - Keine Angabe No details KW - Wireless Communication KW - Mobile Applications KW - Social Media Marketing Y1 - 2009 N1 - Volltext aus urheberrechtlichen Gründen nicht verfügbar. Fulltext due to copyright not available. SP - 185 EP - 202 PB - Verlag Werner Hülsbusch CY - Boizenburg ER - TY - BOOK A1 - Ulrich, Peter A1 - Tamm, Gerrit T1 - Corporate- und Webinterface Design für ein Online-Unternehmen: Analyse, Konzeption und Realisierung am Beispiel des Online-Jobportals absolvent.de N2 - Absolvent.de ist ein seit 1998 bestehendes Online-Jobportal, welches sich auf die Vermittlung von Jobs und Praktika für Hochschulabsolventen spezialisiert hat. Im Zuge eines bevorstehenden Relaunchs sollen neben den Funktionalitäten und eingesetzten Technologien auch das Corporate Design und das Webinterface Design erneuert werden. Die Entwicklung von Corporate Design und Webinterface Design für 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 erläutert. Im praktischen Teil werden am Beispiel des Online-Jobportals absolvent.de systematische Methoden für 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 Komplexität 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. KW - Webinterface Design KW - Webdesign KW - Corporate Design Y1 - 2008 SN - 978-3-639-04088-3 N1 - Buch verfügbar in der Bibliothek der SRH Hochschule Berlin, Signatur ST252 4. Book available in the library of SRH Hochschule Berlin, shelf mark ST252 4. PB - VDM Verlag Dr. Müller CY - Saarbrücken ER - TY - CHAP A1 - Tamm, Gerrit A1 - Ullrich, Sebastian ED - Pop, Susa T1 - Agile Software Architecture for Interactive Media Facades T2 - Urban media cultures N2 - Keine Angabe No details KW - Agile Software Architecture KW - Interactive Media Facades Y1 - 2012 N1 - Volltext aus urheberrechtlichen Gründen nicht verfügbar. Fulltext due to copyright not available. SP - 176 EP - 179 PB - avedition CY - Ludwigsburg ER - TY - CHAP A1 - Winkler, Till J. A1 - Schöndienst, Valentin A1 - Tamm, Gerrit ED - Sieck, Jürgen T1 - Wireless City Berlin: solutions for a Smarter City T2 - Wireless Communication and Information N2 - 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. KW - Mobile Computing KW - Ubiquitous Computing KW - RFID KW - Technische Innovation KW - Netzwerktopologie Y1 - 2009 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-6441 SP - 207 EP - 220 PB - Verlag Werner Hülsbusch CY - Boizenburg ER -