In order to prolong the wireless sensor network lifetime, an novel energy balanced distributed clustering (EBDC) algorithm based on virtual grid is proposed. EBDC has three obvious features: Firstly, it adopts virtual grid ideas to divide each cluster into M×N square area and select a working node in each grid to reduce redundant information and save energy. Secondly, cluster head is distribute...

Indoor evacuation model can provide scientific guidance for security solution design and emergency plan making in indoor environment, and virtual 3D scene can make the evacuation simulation more intuitive. An integration method of multi-grid evacuation model in 3D virtual indoor environment is proposed here. It maps 3D scene to 2D plane and establishes the grid table first, and then for each gr...

in the past, one of the biggest problems requiring long and complicated computing was lack of appropriate software and hardware facilities in order to compute them in a proper and logical time. due to this issue, sometimes, computing lasted for several days, months or years. therefore, computer science pioneers tried to find a solution for this problem. one of the ways was to present grid compu...

This thesis proposes an accounting system architecture suitable for Grid environments. Furthermore, the design and implementation of a proof-ofconcept accounting system prototype, based on the proposed architecture, is presented. The prototype has been developed to satisfy the accounting needs of SweGrid, a Swedish national Grid. The accounting system leverages state-of-the-art Grid and Web Ser...

The complexity of Grid environments is growing as more projects and applications appear in this quick-evolving domain. Widespread applications are distributed over thousands of computing elements, various communities of users are aggregated into virtual organizations, resources availability is more and more dynamic and final locations of jobs cannot be foreseen. In such contexts, new paradigms ...

The MammoGrid project aims to deliver a prototype which enables the effective collaboration between radiologists using grid, service-orientation and database solutions. The grid technologies and service-based database management solution provide the platform for integrating diverse and distributed resources, creating what is called a 'virtual organisation'. The MammoGrid Virtual Organisation fa...

A hardware independent method of programming a massively parallel machine (MPP) can best be supported by a well-designed run-time environment. An important problem in this design is the ability of eeciently simulating networks diierent from the hardware topology. We will describe the mapping kernel of the virtual processors library for the commercial run-time system PARIX 3. This kernel contain...

abstract: In the present work, determining the optimal strategy(profit based) of multi virtual power plants (VPPs) as well as the objective of maximizing profit through the multi-level control of VPPs are discussed by the micro-grid utilization center including virtual power plants. VPPs include renewable resources such as wind farms, photovoltaic, and conventional resources such as fuel cell, ...

In Wireless Sensor Networks, data dissemination to multiple sinks consumes a lot of energy. Various data dissemination schemes have been proposed over the years to reduce the energy consumption in Wireless Sensor Networks. In this paper, we have proposed a virtual infrastructure based data dissemination scheme which reduces the energy consumption in grid construction process. Grid construction ...

This paper presents a frequency monitoring system for Korean wide-area power protection based on virtual FDR. The virtual FDR is introduced to enhance the simulation capability of frequency monitoring systems and consists of three parts: modeling, estimation, and simulation. Once a power grid model is obtained in the virtual FDR based on EMTP-RV, the frequency is estimated by DFT filtering and ...