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Article
Open AccessDesigning and piloting a generic research architecture and workflows to unlock German primary care data for secondary use
Medical data from family doctors are of great importance to health care researchers but seem to be locked in German practices and, thus, are underused in research. The RADAR project (Routine Anonymized Data fo...
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Chapter and Conference Paper
A Multi-level Policy Engine to Manage Identities and Control Accesses in Cloud Computing Environment
Security challenges are the most important obstacles for the advancement of IT-based on-demand services and cloud computing as an emerging technology. Lack of coincidence in identity management models based o...
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Chapter and Conference Paper
Transparent Model-Driven Provisioning of Computing Resources for Numerically Intensive Simulations
Many simulations require large amounts of computing power to be executed. Traditionally, the computing power is provided by large high performance computing clusters that are solely built for this purpose. How...
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Article
A Heuristic-Based Approach for Dynamic VMs Consolidation in Cloud Data Centers
Cloud computing providers have to deal with the energy-performance trade-off: minimizing energy consumption, while meeting service level agreement (SLA) requirements. This paper proposes a new heuristic approa...
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Chapter and Conference Paper
A Protocol Development Framework for SLA Negotiations in Cloud and Service Computing
As businesses transit towards cloud and service oriented economy, agents are employed to efficiently negotiate service level agreements (SLAs) on services procured automatically to match changes in demand. Thi...
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Book and Conference Proceedings
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Chapter
Management Challenges of Automated Service Level Agreements
Service Level Agreements (SLAs) are formal electronic contracts between customers and providers of services, describing the rules governing service consumption. They can be established automatically by softwar...
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Chapter
The German Grid Initiative D-Grid: Current State and Future Perspectives
The D-Grid is a German national academic Grid initiative, which has been established in 2004. Since then, a variety of resource providers offer resources and services to a large and heterogeneous group of user...
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Chapter and Conference Paper
A Generic Platform for Conducting SLA Negotiations
In service-oriented systems, negotiating service level agreements (SLAs) occupies a central role in the service usage cycle. It is during negotiations that parties are brought together in an interactive mechan...
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Book and Conference Proceedings
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Article
Models and internals of the IANOS resource broker
We present the Intelligent Application Oriented System (IANOS) resource broker models and internals. The aim of IANOS is to provide an understanding of and a solution to the problem of how to find the best re...
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Chapter and Conference Paper
Towards Dynamic Service Level Agreement Negotiation:An Approach Based on WS-Agreement
In Grid, e-Science and e-Business environments, Service Level Agreements are often used to establish frameworks for the delivery of services between service providers and the organisations hosting the research...
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Chapter
Improving Business Opportunities of Financial Service Providers through Service Level Agreements
The calculation of the Implied Volatility of stock options is a computationally expensive process which in general exceeds the resources available at a customer’s site. Financial service providers therefore of...
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Chapter
IANOS: An Intelligent Application Oriented Scheduling Framework For An HPCN Grid
We present the architecture and design of the IANOS scheduling framework. The goal of the new Grid scheduling system is to provide a general job submission framework allowing optimal positioning and scheduling...
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Chapter and Conference Paper
Attributes and VOs: Extending the UNICORE Authorisation Capabilities
Reliable authentication and authorisation are crucial for both service providers and their customers, where the former want to protect their resources from unauthorised access and fraudulent use while their cu...
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Chapter
Using SLA for Resource Management and Scheduling - A Survey
Service Level Agreements are used to establish agreements on the quality of a service between a service provider and a service consumer. The roles of service provider and service consumer may be realised in di...
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Chapter
Towards A Standards-Based Grid Scheduling Architecture
The definition of a generic Grid scheduling architecture is the concern of both the Open Grid Forum’s Grid Scheduling Architecture Research Group and a CoreGRID research group of the same name. Such an archite...
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Chapter
Improving Workflow Execution through SLA-based Advance Reservation
In SOA-based Grid environments service provider and service consumer usually do not know each other. In order to establish a business relation they must inter alia (i) create a trust relationship, and (ii) set...
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Chapter and Conference Paper
NextGRID Architectural Concepts
This paper outlines the conceptual model of the NextGRID architecture. This conceptual model consists of a set of architectural principles and a simple decomposition of the architecture in order to facilitate ...
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Chapter and Conference Paper
Semantic Support for Meta-Scheduling in Grids
Co-ordinated usage of resources in a Grid environment is a challenging task impeded by the nature of resource usage and provision: Resources reside in different geographic locations, are managed by different o...
