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— Bot networks are a serious threat to cyber security, whose destructive behavior affects network performance directly. Detecting of infected HTTP communications is a big challenge because infected HTTP connections are clearly merged with other types of HTTP traffic. Cybercriminals prefer to use the web as a communication environment to launch application layer attacks and secretly enga...

Background: Homelessness, as a common phenomenon in all human societies, has many social, psychological, and physical consequences for the homeless and society as a whole. This study aimed to determine the role of psychological and social security in predicting depression among women living in homeless shelters of Tehran. Methods: It was a descriptive correlational study. The research populati...

planned human resource development is critical to educating a skilled and efficient workforce. the present study aimed at identifying the main factors of planned human resource development in iranian social security organization hospitals. the study is done through analysis of a questionnaire designed after identification of the main variables. iran social security organisation hospitals (the m...