food security means that all people at all times have access to sufficient food, healthy and nutritious. food security is a necessity for rural development. the main purpose of this study is survey of the role of extension education on food security of farmer households in qorveh county (kurdistan province). the research is an applied type in which descriptive method has been employed. populati...

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...

most organizations need to information systems to survive and thrive. therefore, they should seriously protect their information assets. creating structured and justifiable exchanges between cost, security and mission control systems security risks is essential. this is important in the planning and development of such systems. initial appropriate decisions can reduce costs and increase ease of...

In information security, ignorance is not bliss. It is always stated that hiding the protocols (let the other be ignorant about it) does not increase the security of organizations. However, there are cases that ignorance creates protocols. In this paper, we propose distributed contingency logic, a proper extension of contingency (ignorance) logic. Intuitively, a formula is distributed contingen...

for many years, the prevailing notion of security has been associated with the ‘realist’ militaryside of conflict management, understood as ‘national security’. for us the term does not just mean theinterplay of deterring, compelling, defensive and offensive force in the pursuit of a self-defined nationalinterest. above all, and at a fundamental level it includes the safety and quality of life ...

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