The need of software-flexible stream ciphers has led to several alternative proposals in the last few years. One of them is a new Pseudo Random Number Generator (PRNG), named N-adic Summation-Shrinking (NSumSG), which architecture is described in this paper. It uses N-1 parallel working slave summation generators and one N-adic summation generator, controlling the nonlinearity in the generator....

purpose: the aim of present study was the comparative evaluation of content and support quality of iranian academic libraries websites’ and provide recommendations to improve them.methodology: this study is an applied research and methodology was comparative survey. data gathering tools were three checklists extracted from relevant studies which compare with 5 foreign library websites, and thei...

Two articles in a recent issue of the Communications of the ACM put forth somewhat alarming claims about the role of the Internet in our lives. Columnist Peter Neumann observed that “we seem to have evolved into a mentality of ‘If it’s not on the Internet, it doesn’t exist.’” Neumann also noted that the Web duplicates very little of the material we might find in traditional institutions like pu...

In this paper we analyze the behavior of a family of steady state solutions of a semilinear reaction-diffusion equation with homogeneous Neumann boundary condition, posed in a two-dimensional thin domain whit reaction terms concentrated in a narrow oscillating neighborhood of the boundary. We assume that the domain, and therefore, the oscillating boundary neighborhood, degenerates into an inter...

various view points of the library planners about the future’s library buildings have been explained in this paper. with the advances in information technology, some librarians believe that modern and well planned library buildings are not so necessary in the future. on the other hand, many others believe that more modern and well technologically equipped library buildings should be built to fu...

This paper presents a new control method for the Three-level Active Neutral Point Clamped (ANPC) converter. The advantages of this method are presented and a power loss analysis is made for an extreme modulation index. The results obtained are compared whit those obtained for two other control methods. Simulation and experimental results are presented in order to validate the theoretical studie...

The interaction of pyridine-4(-3,-2)aldoxime has been studied whit 3-bromo-N,N,N-trialkyl-2oxo(-hydroxyimino)-1-propanaminium bromide. The structure of all synthesized compounds was determined by elemental analysis as well as by physical and chemical methods. All synthesized compounds were tested for reactivation of phosphorylated acetylcholinesterase. Using fragments of the molecules (an oxime...