* This project is supported by NSF under grant number IIS-0534065 ABSTRACT Solving complex global problems such as illegal immigration, border control, and terrorism requires government organizations at all levels to share not only data but, more importantly, knowledge pertinent to decision support, problem solving and activity coordination. Responding to an emergency often requires organizatio...

Environment monitoring is one of the complex tasks in any industry. Sensor devices are used to handle the environment monitoring operations. Temperature, the sensor devices observe pressure and humidity values. The sensor networks are constructed with sensor devices. Battery power and bandwidth are the main limitations of the sensor networks. Managing the node lifetime and network lifetime are ...

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...

In an industrial plant, there is usually a mix of devices with different levels of security features and computation capabilities. If a mix of devices with various degrees of security features and capabilities communicate, the overall network dynamics with respect to security and network performance will be complex. A secure communication path with high latency and low bandwidth may not satisfy...

in present paper, housing has been considered as a multidimensional and heterogeneous item. its characteristics has been considered as key elements in determination of unit price of each building unit. the aim of the present paper is to determine the degree of importance which each charactericstics of housing has for users. there fore, hedonic price function of urbun housing in khoramabad estim...

This paper studies a dynamic equilibrium model of financial innovation with heterogeneous beliefs and competition among sellers of a new security. We show that both volume and price of the security after it is introduced are sensitive to the differing beliefs of participating players. We present conditions for the innovator to continue issuing the new security and for the imitator to enter the ...

Managing the configuration of heterogeneous enterprise security mechanisms is a complex task. The effectiveness of a configuration may be constrained by poor understanding and/or management of the overall security policy requirements, which may, in turn, unnecessarily expose the enterprise to known threats. This paper proposes a threat management based approach, whereby knowledge about the effe...