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In existing network teaching systems, deficiencies of the resource sharing and management are analyzed. An intelligent network teaching system based on knowledge grid is constructed to provide a uniform platform of intelligent information for teaching. The global sharing of knowledge resource will be realized by this platform. A course domain knowledge representation method based on the topic map...
Infrastructure resources on-demand requires resource provision (e.g., CPU and memory) to be both sufficient and necessary, which is the most important issue and a challenge in Cloud Computing. Platform as a service (PaaS) encapsulates a layer of software that includes middleware, and even development environment, and provides them as a service for building and deploying cloud applications. In PaaS,...
We propose a novel cyberinfrastructure for an emerging class of Internet-based real-time online interactive applications (ROIA). The most challenging representative of this application class are massively multi-player online games. We present the results of the European project Edutain@Grid on the development of efficient cyberinfrastructure and scalable applications. We report experimental results...
Lacking in finance and technology in small companies leads to the slow development of e-business. Grid, as the next generation of Internet, is to eliminate the isolated information island and to support a rapid and cheap information shared platform. Therefore, business processes can be redesigned with grid technology to reduce the cost of e-Business activities between different small companies. This...
Collaborative e-learning virtual communities use virtual learning environments provided by the university or tools that are available in Internet. Although this model has proven its feasibility, it has important limitations. A way to deal with them is by defining virtual organizations (VO) that gather the resources and interests of their members in a way that they can lend resources to or borrow them...
One of the challenging problems for many vehicle owners in big metropolitan cities is where to park their vehicles. If the parking slot availability is known in advance one can save precious time and fuel wastage. In this paper we would like to propose an RFID based parking slot allocation system wherein an intended user is informed about the parking slot availability at a particular parking location...
This paper presents a control-theoretic approach to performance management of Internet Web servers to meet Service Level Agreements (SLA). In particular, a CPU frequency management problem is studied to provide response time guarantees with minimal energy cost. A linear uncertain model and a linear-parameter-varying (LPV) system are derived based on first-principles analysis of transient and steady-state...
E-business organizations commonly trade services together with quality of service (QoS) guarantees that are often dynamically agreed upon prior to service provisioning. Violating agreed QoS levels incurs penalties and hence service providers agree to QoS requests only after assessing the resource availability. Thus the system should, in addition to providing the services: (i) monitor resource availability,...
The following topics are dealt with: message passing interface; peer-to-peer computing; information services; resource discovery; semantic Web; Web services; programming models; programming environments; performance evaluation; security; data grid and management; middleware; resource management; and scheduling
We present the architecture and implementation of a grid resource broker and job submission service, designed to be as independent as possible of the grid middleware used on the resources. The overall architecture comprises seven general components and a few conversion and integration points where all middleware-specific issues are handled. The implementation is based on state-of-the-art grid and...
The use of Web services as the basis for grid middleware has allowed scientists to wrap legacy applications as services in order to provide their capabilities to grid users. However, this "wrapper" model can be poor at satisfying the requirement for software and data to be efficiently positioned on processing resources around the grid as part of larger coordinated computations. We argue...
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