In this introductory chapter, we lay the groundwork for the rest of the book by providing a more detailed picture of the expected purpose, shape, and architecture of future grid systems. We structure the chapter in terms of six questions that we believe are central to this discussion: Why do we need computational grids? What types of applications will grids be used for? Who will use grids? How ...

This paper contains the most important aspects of computing grids. Grid computing allows high performance distributed systems to act as a single computer. An overview of grids structure and techniques is given in order to understand the way grids work.

With the continuous evolution of distributed computing grids and with the perpetuous development of the available computing resources and protocols, there is a sine qua non requirement to pass beyond the physical design of the grids. A viable solution is offered by virtual grids, having the advantage of flexible mapping and adaptation to live in-place resources. A software image is proposed, bu...

Smart grids will make extensive use of information and communication technology (ICT) to enable the integration of renewable energy sources. Consequently, future power grids come with a much larger cyber-attack surface, which makes cybersecurity risk assessment a major concern. Due to their cyber-physical nature, risk assessment in smart grids is a challenging task. Moreover, the complex mix of...

in this paper, plug-in fuel cell electric vehicle (pfcev) is considered with dual power sources including fuel cell (fc) and battery energy storage. in order to respond to a transient power demand, usually supercapacitor energy storage device is combined with fuel cell to create a hybrid system with high energy density of fuel cell and the high power density of battery. in order to simulate the...

Using electric vehicles, in addition to decreasing the environmental concerns, can play an important role in decreasing the peak and filling the off-peaks of the daily load characteristics. In other words, in smart grids' infrastructure, the load characteristics can be improved by scheduling the charge and discharge process of electric vehicles. In smart grids, the customers are instantaneously...

Two distinct redistribution grids - adaptation techniques, spring analogy and elliptic grid generator are applied to two-dimensional steady, inviscid, shocked flows, and the ability of each technique is examined and compared. Euler equations are solved base on Roe's Reimann solver approach to simulate supersonic flow around a sphere, transonic flow about an airfoil and supersonic flow in a symm...

in recent years, different damage indexes have been introduced in engineering literature. the most prominent one among other counterparts is the 1985 park and ang's damage index (dipa), which demonstrates well calibration against experimental results. hence, it has traditionally had broad application in the field of structural engineering. commonly, in dipa relevant parameters are assessed...

reconstruction of breast with transverse rectus abdominis myocutaneous (tram) flap is the standard for reconstruction of breast following mastectomy. in this article, authors report their experience with pedicled tram flap reconstruction of the breast. records for the patients who had undergone breast reconstruction with pedicled tram flap were retrieved. records of outpatient follow-ups were a...

using electric vehicles, in addition to decreasing the environmental concerns, can play an important role in decreasing the peak and filling the off-peaks of the daily load characteristics. in other words, in smart grids' infrastructure, the load characteristics can be improved by scheduling the charge and discharge process of electric vehicles. in smart grids, the customers are instantane...