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The rapidly changing outlook of the electric grid with growing use of renewable energy imposes additional needs for operational flexibility. An opportunity to fulfill a portion of these grid services can come from the demand flexibility (DF) of ...

In recent years, researches focus on addressing the query bottleneck issue using data cache in the internet-of-things. However, the challenges of this method are how to implement autonomous management of data cache. In this paper, we propose an aspect-...

Various barriers due to performance, security and privacy issues associated with shared heterogeneous data centres impede the diffusion of multimodal biometrics that could enhance secured systems in our everyday lives. This paper identifies the issues ...

Grid computing is a technology that organizes vast amounts of heterogeneous resources under a common strategy. Applications created to run under such structures will be limited only by the restrictions of the chosen architecture or protocol. However, a ...

The heterogeneous requirements of e-Science applications belonging to several scientific domains makes difficult to provide them with a support able to satisfy all the different needs. Usually, the grid middleware adopted provides applications with ...

Collaborative applications usually register user interaction in the form of semi-structured plain text event log data. Extracting and structuring of data is a prerequisite for later key processes such as the analysis of interactions, assessment of group ...

In this study the task scheduling problem in Grid computing environments has been addressed. To resolve the problem a set of Grid Services are defined and implemented conforming to the OGSA standards. The proposed scheduling architecture is semantically ...

In Peer-to-Peer (P2P) applications, peers exchange their opinions with each other and make an agreement on one opinion. Agreement procedures have to be so flexible that persons can change their opinions, withdraw previous opinions under some constraints ...

Service composition on the Grid is a challenging task as documented in existing research work. Even though there are initial attempts to use the Business Process Execution Language (BPEL) to compose services on the Grid, still there is a significant ...

Nowadays, novel computing paradigms as for example Grid or Cloud Computing are gaining more and more on importance. In case of Cloud Computing users pay for the usage of the computing power provided as a service. Beforehand they can negotiate specific ...

One of the essential challenges of integrating pervasive devices into a grid environment to enhance pervasive device capabilities is that pervasive devices need to locate, find, select and invoke the appropriate grid services in an autonomic and ...

Large scientific applications are usually developed, tested and used by a group of geographically dispersed scientists. The problems associated with the remote development and data sharing could be tackled by using collaborative working environments. ...

This paper presents our results with monitoring data dependencies among concurrently executing, distributed processes that execute over grid services. The research has been conducted in the context of the DeltaGrid project, focusing on the development ...

Bias artifact corrupts MRIs in such a way that the image is afflicted by illumination variations. Some of the authors proposed the exponential entropy-driven homomorphic unsharp masking (E2D-HUM) algorithm that corrects this artifact without any a ...

The continuous increase of spatial data volumes available from many sources raises new challenges for their effective understanding. We propose an intelligent distributed geographic information service platform, which is a profitable infrastructure and ...

To solve the Chord algorithm of p2p system only supporting single keyword precise query problem, we join the Hilbert curve into the Chord ring to form a new structure-HilbertChord (HC). It is a structure based on the Hilbert curve and Chord system. HC ...

The Business Process Models and grid-enabled Service Oriented Architecture (BPMSOA) framework facilitates the enactment of a business process using application domain specific grid services. In this paper, we use a role-based instance of BPMSOA to enact ...

Workflows of web services orchestrated by the Business Process Execution Language (BPEL) have been successfully used in many business applications. Although these technologies were not originally designed for multimedia processing, they offer advantages ...

Semi automatic and semantic composition of workflows from Web and Grid services is an important challenge in today's distributed applications. This paper focuses on how to model and compose workflow applications of Grid services without considering ...

Services play an increasingly important role in software applications today. Service-Oriented Computing (SOC) increases the speed of system development through loose coupling between the system components, the discovery of services and consolidating ...