We study the development of conjunctive keyword searchable scheme which enables one to search encrypted documents by using more than one keyword. The notion of conjunctive keyword searching was presented by Golle et al. in 2004. However, their security model was constructed in a symmetric-key setting which is not applicable for the overall applications in the reality. So Park et al. extended Go...

the rapid and intensive progress in science and technology in the world, despite its abundant advantages and gifts of welfare and comfort for the mankind, in many ways, it has pushed human security to face grave tragic events. to give an example, the progress in chemistry before the great war, made it possible to produce and use toxic gases including phosgene gas causing enormous deaths of both...

cash transfer (cts) is an increasingly popular social protection mechanism used by many developing countries to improve the food security and nutritional status of lower socio-economic groups. this paper is a review of the literature regarding the impact of ct programs on the food security of recipient households in the developing countries, including iran. we looked for all original studies, p...

In this paper, we propose a method to improve the security challenges in Nigeria by embedding literally hundreds of invisible computers into the environment with each computer performing its tasks without requiring human awareness or a large amount of human intervention to monitor human behaviour, natural disasters and search for stolen or lost items. Ubiquitous Dynamic Surveillance cameras emb...

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...

Creating and remembering strong passwords is essential to ensure overall system security. This paper presents two studies that evaluate acronym based passwords and system generated passwords in terms of memorability and user perception. Keywords—Password Security, Authentication, Human Factors

Cash transfer (CTs) is an increasingly popular social protection mechanism used by many developing countries to improve the food security and nutritional status of lower socio-economic groups. This paper is a review of the literature regarding the impact of CT programs on the food security of recipient households in the developing countries, including Iran. We looked for all original studies...