TY - JOUR A1 - Stantchev, Vladimir A1 - Tamm, Gerrit A1 - Ullrich, Sebastian T1 - Marktplätze in der Cloud: Application Stores für mobile und webbasierte Dienste JF - ISIS Cloud und SaaS Report 2011 N2 - Cloud-Computing, insbesondere „Software as a Service (SaaS)“ und „Platform as a Service (PaaS)“ ist zugleich Herausforderung und Chance für IT-Anwender. Marktplatz-Ansätze aus der Welt der mobilen Applikationen (App Stores) können eine Grundlage für die Vermarktung von Software-Diensten darstellen. Ihre Konzepte lassen sich jedoch nur durch eine erweiterte Betrachtung von funktionalen und nicht-funktionalen Aspekten der webbasierten Dienste in die Welt des Cloud Computing übertragen. Application Stores und Marktplätze für webbasierte Dienste (z.B. Asperado, Cloud-Portal, Software-Marktplatz) helfen bei Identifizierung und Bewertung der Angebote und bei der Kommunikation mit potentiellen Kunden. KW - Cloud-Computing KW - Marktplatz KW - SaaS KW - PaaS Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-689 SP - 99 EP - 101 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 - JOUR A1 - Ibach, Peter A1 - Milanovich, Nikola A1 - Richling, Jan A1 - Stantchev, Vladimir A1 - Wiesner, Andre A1 - Malek, Miroslaw T1 - CERO: CE RObots Community JF - IEE Proceedings Software N2 - We describe our experience creating a robots community using standard hardware and software - the Windows CE operating system, XScale development boards, and LEGO Mindstorm actuators. We focus on an open and extendable distributed robotics system, which in contrast to most existing proprietary robotics systems, supports cost-effective integration and assembly of components while providing dependable communication and coordination. To demonstrate feasibility we have developed the CERO Framework for ad hoc cooperation in robots communities employing a service-oriented architecture with the main building blocks: ad hoc networking for different wireless technologies (e.g., Bluetooth, WLAN, or 433 MHz radio communication), a protocol for interconnecting development board and actuators, and a CE.NET based software framework supporting complex movements, consensus protocols, cooperation, and positioning. It offers high-level interfaces for programming complex tasks in cooperative robotics. We also present an overview of intended applications. KW - CERO KW - Robotics Systems KW - Robots Communities Y1 - 2005 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-733 VL - 152 IS - 5 SP - 210 EP - 214 ER - TY - CHAP A1 - Werner, Matthias A1 - Richling, Jan A1 - Milanovic, Nikola A1 - Stantchev, Vladimir T1 - Composability Concept for Dependable Embedded Systems T2 - Proceedings of the International Workshop on Dependable Embedded Systems at the 22nd Symposium on Reliable Distributed Systems (SRDS 2003) N2 - Composability is a sought after property. However, whereas there is usually an intuitive understanding of this concept, a clear definition has been frequently missing. In this paper, we refine our concept of composability given in. We see composability as a property of an architecture not of systems. In addition, we do not want to reduce composability to the functional specification; rather, we are focusing on how composability effects the nonfunctional properties, especially the composed system's real-time behavior, its reliability, its security, etc. We see the advantage of our approach in having a wide application domain. It works for functional and non-functional properties, it may consider both, hardware and software, and it allows for a description of composition anomalies. In this paper, we show how to apply our concept to an embedded hardware-software co-designed architecture and to composition and decomposition of dependable services in embedded environments. KW - Embedded Systems KW - Composability Concept KW - Composability Y1 - 2003 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-747 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 - CHAP A1 - Schubert, Johannes A1 - Mautsch, Erik A1 - Stantchev, Vladimir A1 - Tamm, Gerrit T1 - Rechtliche Rahmenbedingungen für die Datenerhebung durch AAL-Infrastruktur bei der Pflege N2 - Bei der Datenerhebung und -verarbeitung durch AAL-Infrastruktur im Pflegesektor sind rechtliche Rahmenbedingungen zu prüfen, die die Nutzung der Messdaten juristisch zulässig machen. Hierzu wurden die in der praxisnahen Pflegeliteratur dargestellten Rechtsnormen zusammengefasst und kategorisiert. Somit ließ sich ermitteln, welche Daten als schützenswert zu definieren und mit welchen Sicherungsmaßnahmen zu versehen sind. Auf dieser Basis kann ein Ansatz präsentiert werden, der eine rechtlich unbedenkliche Absicherung aller technischen Elemente bei der Implementierung einer AAL-Infrastruktur in der Pflege ermöglicht. N2 - For collecting and processing data with AAL infrastructure in the nursing sector, there are legal rules to examine to build a legal framework for the usage of these measured data. Therefore, we consolidated and categorized legal norms presented in the practical orientated nursing literature. Consequently, we identify which data can be defined as worth protecting and which measures of protection are possible for them. On this basis, we present an approach for a legally safe usage of every kind of technical elements within the implementation of AAL infrastructure in the nursing sector. KW - AAL KW - Datenschutz KW - Smart Items Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-2607 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 - 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 -