At the same time when outer space activities become increasingly important to states, the room for actions and new actors tends to get smaller and the risk that outer space becomes inaccessible is rising. Decisionmakers have recently taken the topic of space sustainability on their agenda, investigating policies to coordinate future actions. Nevertheless, they are ignoring the danger that alrea...

In this paper we consider security-related and energy-efficiency issues in multi-hop wireless networks. We start our work from the observation, known in the literature, that shortest path routing creates congested areas in multi-hop wireless networks. These areas are critical—they generate both security and energy efficiency issues. We attack these problems and set out routing in outer space, a...

explanation and evaluation of the book “rational choice and security studies, stephen walt and its critics”, edited by brown owen and lynn josomiller, has taken place in fact in the direction of exploration of the knowledge of security studies in international relations. in terms, examination of walt’s rational choice approach, and the formal-mathematical model, can help us to present a clear a...

the chechen republic (commonly referred to as chechnya) is a part of vast territory of russian federation that has been a source of contention since collapse of the soviet :union:. identity elements and tattered cultural bonds have strained ties between two nations of chechnya and russia. various aspects of crisis in chechnya have been addressed by many theoretical approaches of international r...

today, the women from the half of the civil society population and from the perspective of security in the urban society, they are vulnerable social groups that their security is threatened in different ways. this study seeks to examine the factors affecting social security of women living in two neighborhoods in vanak and sarasiab. research theoretical model is composed (inspired by the views ...