This paper describes the application of static var compensators, (SVC) on an electrical distribution network containing two large synchronous motors, one of which is excited via a three-phase thyristor bridge rectifier. The second machine is excited via a diode bridge rectifier. Based on linear optimization control (LOC), the measurable feedback signals are applied to the control system loops o...

With the increasing popularity and diversity of computer systems, quality of services for computer applications becomes more and more important. In order to facilitate the theoretical studies on the computer performance management problem, an effective simulation environment is desired. In this paper, we propose a methodology of extracting a queueing model from the measurements of computer syst...

One inevitable trend of network development is to deliver information with various traffic characteristics and diverse Quality of Service (QoS) requirements. In response to the continually growing demand for more bandwidth, network performance analysis is needed to optimize the performance of existing technologies and evaluate the efficiency of new ones. Performance analysis investigates how tr...

Abstract— Data grids are an important branch of gird computing which provide mechanisms for the management of large volumes of distributed data. Energy efficiency has recently emerged as a hot topic in large distributed systems. The development of computing systems is traditionally focused on performance improvements driven by the demand of client's applications in scientific and business domai...

this paper intends to offer a new iterative method based on articial neural networks for finding solution of a fuzzy equations system. our proposed fuzzied neural network is a ve-layer feedback neural network that corresponding connection weights to output layer are fuzzy numbers. this architecture of articial neural networks, can get a real input vector and calculates its corresponding fu...

Computer networks are used in different organizations to many purposes. Some use them internally to enable work processes, others may see network as a strategic resource. This paper looks at local area networks, those networks that are the core of the entire information system in organizations today. The are many important management tasks in the area of local area networks, for example expansi...

The proliferation and growth of modern computer networks have made network management infrastructures an integral part of the administration process. Nevertheless, most of these do not have the notion of security assimilated by design. Thus, existing network equipment cannot be managed securely without additional hardware or software security modules. This paper discusses a simple, yet robust, ...

introduction: one of the software packages designed for libraries and documenting centres is unesco cds/isis mini-micro software package. most libraries in iran have a copy of it. this research was aimed to investigate the degree of its application in central libraries of medical sciences universities in 2004. methods and materials: it is a descriptive study in which a questionnaire was used to...

A uscr friendly. personal computer-based system designed to help solve cash management problems is discussed. The system is a "smart" system that enables the cash manager to use analytic techniques that otherwise would not be as accessible to anyone other than a technical analyst. The system formulates a cash management problem as a network problem, solves that network problem. ensures feasibil...