to evaluate and predict component-based software security, a two-dimensional model of software security is proposed by stochastic petri net in this paper. in this approach, the software security is modeled by graphical presentation ability of petri nets, and the quantitative prediction is provided by the evaluation capability of stochastic petri net and the computing power of markov chain. each...

Abstract: Voltage instability is a major threat for security of power systems. Preserving voltage security margin at a certain limit is a vital requirement for today’s power systems. Assessment of voltage security margin is a challenging task demanding sophisticated indices. In this paper, for the purpose of on line voltage security assessment a new index based on the correlation characteristic...

it’s not long since the advent of pervasive computing by mark weiser and one of its main usages is in healthcare systems. as this technology has been introduced only recently in this field and because we are dealing with peoples’ lives and their data, providing a high level of privacy and security is of great importance. various studies have been performed in which a certain method has been use...

In recent years, many security threats have entered into the organizations’ information and changed the  organizational performance resulting in their exorbitant costs. This question is of particular importanceabout government agencies that use information and Internet systems. This issue enabled the top managers of organizations to implement a security system and minimize these costs. Using In...

social security of iran has passed different stages and today has entered the stages of organizational development and universal coverage. but this system, like other man-made systems, has inadequacies which must be rectified. in this article, legal system of iran has been studied from legal point of view and necessary proposals have been presented in order to remove these defects: main axis of...