wireless sensor networks (wsns) have many applications in the areas of commercial, military and environmental requirements. regarding the deployment of low cost sensor nodes with restricted energy resources, these networks face a lot of security challenges. a basic approach for preparing a secure wireless communication in wsns, is to propose an efficient cryptographic key management protocol be...

Background: Solving the problem of food and nutrition security requires the integration of various sectors of the society. Determining the role of each sector in promoting people’s health has presented intersectoral collaboration and transformed the theory of social health determinant approach into action. In this study, with a new approach, and in regards, the national organizations resp...

Historically, issues of gender, race and the environment have received little attention in mainstream International Relations (IR) scholarship. Great strides have been made, however, in interrogating the inadequacies of the field in these areas and, similarly, in demonstrating the necessity of expanded definitions of security and violence in IR. Despite these strides, mainstream environmental s...

Enhanced environmental quality, fuel security, and economic development along with reduced prices of ethanol–gasoline blends are often used as justifications for the U.S. federal excise tax exemption on ethanol fuels. However, the possible effect of increased overall consumption of fuel in response to lower total price, mitigating the environmental and fuel security benefits, are generally not ...

Security is one of the most critical factors affecting the quality of urban spaces. Nowadays, most of these spaces have become merely pathways with neither social life nor sense of belonging to it. Insufficiency of public surveillance along with weak sense of control and surveillance results in spaces with high crime rate. In the late 60s and early 70s, high crime statistics in open urban space...

Our country, Iran, is in the category of waterless and survived countries because of lack of climate downfalls to its unsuitable local to temporal transmittance. Environmental concerns mainly after 1960s that have boon seriously proposed in universal politics, created a variety of assessments. In the late decades, environmental change such as: climate change, has caused chief challenges for the...