1 The authors were supported by DARPA/AFR-IF under contract F30602-99-1-0532 and by the Information Assurance Institute at Cornell University and AFRL-IF. Astrolabe is available from Reliable Network Solutions, www.rnets.com. Abstract – The dramatic growth of computer networks creates both an opportunity and a daunting distributed computing problem for users seeking to perform data fusion and d...

In this paper, we propose architectural support for object manipulation, stack processing and method invocation to enhance the execution speed of Java bytecodes. First, a virtual address object cache that supports efficient manipulation and relocation of objects is presented. The proposed scheme combines the serialized handle and object lookup into a single lookup. Next, the extended folding op...

This paper presents the use of techniques for simulating product qualification as well as for product testing of electronic hardware to be used in the United States Marine Corp’s Advanced Amphibious Assault Vehicle. The goal of integrating “up-front” virtual life assessment into the development environment is to increase overall product reliability and decrease overall product cost by decreasin...

in this paper, we investigated the necessity and effects of optimal control methods in the stability and performance of a micro-grid that operates in islanded mode. the micro-gird is consisted of a combine heat and power (chp), a capacitor bank (cb), photovoltaic panel (pv) as power generation sources. in addition, battery and the building electricity and thermal load are placed on the load sid...

modeling and wrench feasible workspace analysis of a spatial cable suspended robots is presented. a six-cable spatial cable robot is used the same as stewart robots. due to slow motion of the robot we suppose the motion as pseudostatic and kinetostatic modeling is performed. various workspaces are defined and the results of simulation are presented on the basis of various workspaces and applied...

background : along with emersion of the internet, virtual education increasingly has been growing. many studies discussed this method and its impact on learning. present study investigated students’ attitude towards virtual education as well as its effect on learning. methods : this was a pretest-posttest quasi-experimental study. the nursing students, who had selected fluids and electrolyte di...

In this paper, we investigate the load balancing problem among a cluster of mobile and fixed devices in a voice enabled interface. We consider a design approach. The voice interface has to support up to a hundred simultaneous users. The load balancing criteria we consider are defined, on the one hand in terms of network, CPU and memory resources, and on the other hand in terms of the boundary b...

Many performance models for interconnection networks in parallel computing systems have been reported under the assumption of non-bursty Poisson arrival process. However, network traffic loads often exhibit bursty nature, which can markedly degrade the system performance. In order to develop a cost-efficient performance evaluation tool, this paper proposes a new analytical model for torus netwo...

Grid computing is based on coordinated resource sharing in a dynamic environment of multi-institutional virtual organizations. Data exchanges, and service allocation, are challenging problems in the field of Grid computing. This is due to the decentralization of Grid systems. Building decentralized Grid systems with efficient resource management and software component mechanisms is a need for a...

Traditional feedback congestion control is not suitable for high-speed networks due to their high bandwidth-to-delay ratio. In this paper, we investigate the possibility of locally controlling short-term congestion for loss-tolerant, but delay-sensitive traac such as packet voice through selective discarding of packets based on the virtual work found by a packet on arrival to a queue (local dea...