A scalability analysis of grid allocation mechanisms

This article examines the broker's behavior with regard to a varying number of participating nodes and shows that incremental losses have to be accepted in central resource allocation when introducing new nodes. --Grid Computing

Socio-Economic Mechanisms to Coordinate the Internet of Services: The Simulation Environment SimIS

Visions of 21st century information systems show highly specialized digital services and resources, which interact continuously and with a global reach. Especially with the emergence of technologies, such as the semantic web or software agents, intelligent services within these settings can be implemented, automatically communicating and negotiating over the Internet about digital resources without human intervention. Such environments will eventually realize the vision of an open and global Internet of Services (IoS). In this paper we present an agent-based simulation model and toolkit for the IoS: 'SimIS - Simulating an Internet of Services'. Employing SimIS, distributed management mechanisms and protocols can be investigated in a simulated IoS environment before their actual deployment.Multi-Agent Simulation, Internet, Simulation Tools

CATNETS Final Activity Report

This paper presents the final activity report of the CATNETS project. It summarizes the project objectives, the contractors involved, the work performed and the final results. A description of the dissemination activities concludes the report

A Survey on Reputation Systems for Artificial Societies

The Internet has caused a revolution in trading. Especially cheap items are now easy to buy and sell on the Internet. As a consequence, sellers nowadays offer a wide range of products on the web, creating an abundance of choice for consumers. Consumers have the opportunity to browse on different auction sites for the item they really want. Along with this success story, however, came the stories of people being cheated by fraudulent online sellers. These frauds cover a range from not delivering what has been promised, the overrating of a product's condition, to deliberate acts of theft. They are a result of so-called asymmetric information. Trust and reputation mechanisms are intended to address this asymmetric information distribution. This article surveys the most common trust and reputation systems

The service-productivity learning cockpit – a business intelligence tool for service enterprises

The paper describes the development of an agent-based simulation tool for hospital managers to manage their productivity of services, especially in the context of supporting services like patient transport logistics. The learning cockpit allows hospital managers to see how the change of inputs changes the overall perceived customer values of all stakeholders and therefore to get a visualization of the impacts their decisions cause. The paper introduces the general research domain service-productivity, followed by a description of the development steps of artefact creation. The learning cockpit is part of a research project called BELOUGA, which is funded by the German government

Analysis of simulation environment

In this paper the requirements for an ALN simulation environment are analysed, as needed in the CATNETS Project. A number of grid and general purpose simulators are evaluated regarding the identified requirements for simulating economical resource allocation mechanisms in ALNs. Subsequently a suitable simulator is chosen for usage in the CATNETS project. --CATNETS simulator,requirements analysis,simulator selection

A Scalability Analysis of Grid allocation Mechanisms

This article examines the broker's behavior with regard to a varying number of participating nodes and shows that incremental losses have to be accepted in central resource allocation when introducing new nodes

Evaluation and metrics framework

In this paper a metrics framework for evaluating different scenarios in the CATNETS project is defined. The aim is to use this framework to compare the catallactic scenario against the central auctioneer. --Grid Computing

Werte und Motive als Treiber der Smartphone-Nutzungsaktivitäten - Eine empirische Studie

Durch Smartphones und mobile Applikationen integrieren Konsumenten zunehmend Informationssysteme in ihren Alltag. Der Beitrag deckt relevante Werthaltungen auf, die sich hinter den Motiven als Treiber von Smartphone-Nutzungsaktivitäten verbergen. Tiefeninterviews mit Konsumenten wurden auf der Basis des Laddering Verfahrens durchgeführt. In theoretischer Anlehnung an Maslow und McClelland konnten fünf relevante Smartphone-Nutzungsmotive identifiziert werden: "Zugehörigkeit" und "Freude und Spaß" als stärkste Motive bei allen Probanden; das "Identifikationsmotiv" speziell bei weiblichen Probanden, außerdem das "Leistungsmotiv", das "Sicherheitsmotiv" sowie das "Motiv der Selbstverwirklichung" speziell bei männlichen Probanden. Die mittels Laddering identifizierten zentralen Antriebskräfte reflektieren die Determinanten "Leistungserwartung", "soziale Einflüsse" und "hedonistische Motivation" der UTAUT II. Wie durch das theoretische Akzeptanzmodell postuliert, konnten auch mittels Laddering Verfahren geschlechtsspezifische Unterschiede für die mit der Smartphone-Nutzung verbundenen Werte aufgedeckt werden. Die Untersuchungsergebnisse zeigen, dass sich die Wirkung hedonistischer Motivationen auf die Verhaltensabsicht je nach Alter, Geschlecht und Erfahrung verändern kann

A Policy Framework including Trust and Reputation in Grid Environments

This paper examines the role of policies in different grid environments. A Grid technology becomes standardized and stable, various business models are envented and increasingly applied, and economic implications can be observed.Asymmetrically distributed information may allow for opportunistic behaviour of service providers or users who exploit the information gap between providers and consumers on the quality of services