In many European countries, natural gas-fired power plants are considered a possibility to quickly compensate the expected shortfall in electric energy supply. Increasing gasfired generation capacity would also increase the couplings and interactions between gas and electricity systems. So far, gas power plants participate in two different markets gas and electricity. Coupling these markets by ...

Securing wireless mobile ad hoc networks (MANETs) is challenging due to the lack of centralized authority and poor connectivity. Key management forms the basis for achieving many security objectives such as protecting routing protocols and private communications. We propose a novel key management scheme for MANETs that exploits mobility and the routing infrastructure to effectively manage secur...

This article aims at identifying the factors involved in affecting the travel demand to Iran. The hypothesis of the research specifies the variable of “domestic social unrest and insecurity” as the most significant obstacle that stands against an expansion of the demand for travel to Iran. To test the above hypothesis, first several demand models that have been proposed to study demand for tour...

Cloud computing is emerging technology in today’s era. Its popularity is because of flexibility, scalability, cost reduction and on-demand service. But there is the demand of security in User-Cloud environment, because of dependency increases on the cloud. Several companies chooses cloud environment for business prospective. So when we choose cloud environment we must think about the security i...

providing of food products for increasing population, enhancing food security, increasing of production and foreign incomes are among the major program purposes of each country and monetary policies are one of the methods that immediately affected on food price and on major agriculture variables. time series analysis was used for studying the impacts of monetary policies effect on food price in...

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...

Restoring Poissonian noise images have drawn a lot of attention in recent years. There are many regularization methods to solve this problem and one of the most famous methods is the total variation model. In this paper, by adding a quadratic regularization on TGV regularization part, a new image restoration model is proposed based on second-order total generalized variation regularization. The...