Dual-Vth design is an effective leakage power reduction technique at behavioral synthesis level. It allows designers to replace modules on non-critical path with the highVth implementation. However, the existing constructive algorithms fail to find the optimal solution due to the complexity of the problem and do not consider the on-chip temperature variation. In this paper, we propose a two-sta...

This study proposes that the entropy function provides a simple and useful tool for project managers to better cope with project uncertainty, and therefore better manage projects. The entropy function has a long and established history as a measure of uncertainty in information theory. If selected activities on PERT networks are modified by reducing their activity times by one or more time unit...

Tradeoff between time and cost is an important issue in planning a project. This paper deals with a stochastic Time-Cost Tradeoff Problem (TCTP) in PERT network of project management. All activities are subject to linear cost function and assumed to be exponentially distributed. The aim of this problem is to maximize the project completion probability with a pre-known deadline to a predefined p...

More and more parallel and distributed systems (cluster, grid and global computing) are both becoming available all over the world, and opening new perspectives for developers of a large range of applications including data mining, multimedia, and bio-computing. However, this very large potential of computing power remains largely unexploited this being, mainly due to the lack of adequate and e...

in this paper, we establish some results on the existence of at least three weak solutions for adirichlet problem involving p-laplacian using a variational approach.

Fuzzy logic is an alternate approach for quantifying uncertainty relating to activity duration. The fuzzy version of the backward recursion has been shown to produce results that incorrectly amplify the level of uncertainty. However, the fuzzy version of the forward recursion has been widely proposed as an approach for determining the fuzzy set of critical path lengths. In this paper, the direc...

This paper considers a project scheduling problem with the objective of minimizing resource availability costs required to execute the activities in a project by a given project deadline. The project contains activities interrelated by finish-starttype precedence relations with a time lag of zero, which require a set of renewable resources. Two metaheuristics, path relinking and genetic algorit...

Figuring out why a process in a batch window ended late often requires tracing back through the critical path to look for anomalies. In a complicated batch schedule, determining which jobs are on the critical path can be a seemingly daunting task. Various commercial products can be used for this task, but they may not be necessary. The code needed to determine which predecessor jobs constitute ...

In this paper, we focus on the problem of secure multicast in dynamic groups. In this problem, a group of users communicate using a shared key. Due to the dynamic nature of these groups, to preserve secrecy, it is necessary to change the group key whenever the group membership changes. While the group key is being changed, the group communication needs to be interrupted until the rekeying is co...

since there are concerns about spread of mycological infection in the society and in order to determine the epidemiology and risk factor for such infections among primary school students in tehran, a research project was proposed to dean of research affairs of shaheed beheshti medical university and 4 medical students undertook to work on the subject as their thesis project. the project was acc...