Investigation of reliability characteristics under fuzzy environments is proposed in this paper. Fuzzy Weibull distribution and lifetimes of components are using it described. Formulas of a fuzzy reliability function, fuzzy hazard function and their α-cut set are presented. Furthermore, the fuzzy functions of series systems and parallel systems are discussed, respectively. Finally, some num...

In coarse-grained parallelism, it is effective to partition the network into Bordered Block Diagonal Form (BBDF) before subsequent parallel computation. An implementation of parallel power flow calculation based on a novel graph partitioning algorithm, which transforms the admittance matrix into nested BBDF (NBBDF),is presented in this paper. In order to avoid excessive fill-ins during Gaussian...

Issues of implementation of an object-oriented library for parallel interior-point methods are addressed. The solver can easily exploit any special structure of the underlying optimization problem. In particular, it allows a nested embedding of structures and by this means very complicated real-life optimization problems can be modelled. The efficiency of the solver is illustrated on several pr...

This paper deals with the experimental testing and verification of the earlier proposed load balancing and coupling factor criteria for the conservative parallel discrete event simulation in heterogeneous execution environments whether they can ensure a good speed-up. The definition of the relative speed-up is extended to the heterogeneous systems in a natural way. This definition is used to me...

In this paper we present WebPS, an open-source web-enabled simulator for P systems, and a P accelerator for parallelization of the existing sequential simulators. The simulator is based on CLIPS, and it is already available as a web application. The P accelerator is used to parallelize the existing sequential simulators of the P systems. We exemplify this tool by using a simple CLIPS simulator....

Dimensional synthesis of a parallel robot may be the initial stage of its design process, which is usually carried out based on a required workspace. Since optimization of the links lengths of the robot for the workspace is usually done, the workspace computation process must be run numerous times. Hence, importance of the efficiency of the algorithm and the CPU time of the workspace computatio...