As an important tool for performance assessment in multi-state systems, the universal generating function approach is introduced and developed aiming at strength reliability analysis of structural systems. Static reliability models of statically determinate and statically indeterminate systems are built by constructing special generating functions, which are used to describe probability distrib...

Radial Basis Funct ion ( R B F ) network i s a n e f i c i e n t func t ion approximator. Theoretical researches focus o n the capabilities of the network t o reach a n optimal solution. Unfortunately, f e w results concerning the design and training of the network are available. W h e n dealing with a specific application, the performances of the network dramatically depend o n the number of n...

In many concurrent programming languages, concurrent programs are diicult to extend and modify: small changes in a concurrent program may require re-implementations of a large number of its components. In this paper a novel concurrent program composition mechanism is presented in which implementations of computations and synchroniza-tions are completely separated. Separation of implementations ...

the aim of this study was to evaluate the effect of replacing progesterone injections by progesterone vaginal inserts on productive and reproductive parameters of lactating cows with reproductive problems after prolonged periods of heat stress. fifteen holstein cows were randomly assigned to one of three treatments: 1) treated with two progesterone vaginal inserts (p4-ins); 2) treated with prog...

in many studies, topographic factors have been considered as an important factor in establishing the vegetation in different ecosystems. so, it affects vegetation composition and diversity by influencing soil moisture, fertility and soil depth. the aim of this research was to investigate the effects of slope, elevation and geographical aspects on species growth, forage production and vegetation...

tea might be considered as the most popular drink in iran as well as some other parts of theworld. its popularity to some extent depends on its flavor and some other constituents present in its leaves orextract. black tea samples from various agro climatic zones of northeast of iran were evaluated for the chemicalconstituents, polyphenols and metal analysis that determine the quality perception...

Studies on normal tissues have suggested that the ribonucleic acid (RNA) of nuclei, mitochon dna, microsomes, and supernatant fluid isolated from tissue homogenate has a characteristic nu cleotide composition (7, 8, 16), while other data did not support such a view (6). Results obtained in this laboratory revealed, in fact, the occurrence of characteristic ribonucleic acids in rat liver frac ti...

We describe a variant of a domain decomposi tion method proposed by Gleicher and Kass for in tersecting and trimming parametric surfaces In stead of using interval arithmetic to guide the de composition the variant described here uses a ne arithmetic a tool recently proposed for range analy sis A ne arithmetic is similar to standard interval arithmetic but takes into account correlations be twe...