the main purpose of this study is analysis impact of information technology and organizational structure on strategic knowledge management in islamic azad university kermanshah branch. the statistical population of this study is 60 employees of islamic azad university kermanshah branch. in order to determine the sample size, cochran’s formula was used. consequently, 52 employees (bosses, deputi...

In analyses of contingency tables made up of categorical variables, the study of relationship between the variables is usually the major objective. So far, many association measures and association models have been used to measure  the association structure present in the table. Although the association measures merely determine the degree of strength of association between the study varia...

In the general framework of hydraulic servo systems, this paper addresses the problem of position control in the presence of important friction nonlinearities. The accent falls on the variable structure methodology, as we try to use its intrinsic robustness properties. Several friction observers, including the one based on a variable structure approach, were incorporated and tested in an accele...

controversy exists regarding cavity preparation for restoration of interproximal caries in posterior teeth in terms of preserving the tooth structure and suitable stress distribution. this study aimed to assess the effect of extension and type of class ii cavities and the remaining tooth structure in maxillary premolars restored with composite resin on the biomechanical properties of teeth usin...

p2x 7 antagonist activity for a set of 49 molecules of the p2x 7 receptor antagonists, derivatives of purine, was modeled with the aid of chemometric and artificial intelligence techniques. the activity of these compounds was estimated by means of combination of principal component analysis (pca), as a well-known data reduction method, genetic algorithm (ga), as a variable selection technique, ...

Variable structure refers to the ability of a system to dynamically change its structure according to different situations. It provides component-based modeling and simulation environments with powerful modeling capability and the flexibility to design and analyze complex systems. In this paper, we discuss variable structure, specifically the structure and interface change capability, in DEVS-b...

this paper tries to estimate employees population in time series in irans economic sectors within 1955-2006. natural spline and monotone cubic spline interpolation methods were used in order to estimate the time series statistics of the employees population between two censuses or two consecutive samplings. an explanatory variable was chosen according to labor demand and labor market structure....