Communication security of wireless sensor networks is achieved using cryptographic keys assigned to the nodes. Due to resource constraints in such networks, random key pre-distribution schemes are of high interest. Although in most of these schemes no location information is considered, there are scenarios that location information can be obtained by nodes after their deployment. In this paper,...

Security is one of the major issues in Mobile Ad-hoc Network (MANET) because of its inherent liabilities. Its infrastructureless network with dynamic topology pose a number of challenges to security design and makes it vulnerable for different types of security attacks. In wormhole attack a pair of colluding nodes makes a tunnel using a high speed network. These colluding nodes create an illusi...

This guide is intended to help users get started using the IBM SP distributed memory parallel processor, JENSEN, at UNI C for writing parallel programs. Since the last upgrade in January 1999 the system has a total of 100 processors, called nodes, each with its own local memory. Four of these nodes are for interactive use, 12 belong to a pool for parallel test jobs, 64 are reserved for parallel...

castleman disease (cd) is a rare, lymphoproliferative disorder of uncertain etiology. we are reporting on two cases of castleman disease. both patients were female. this disease can be found wherever lymph nodes are present. we have reported two unusual cases of castleman disease. a 29- year old woman was referred for evaluation because of a cervical lymph node, weight loss and night sweats. th...

A mobile ad hoc network is a collection of mobile nodes in which a pair of nodes communicates by sending messages either over a direct wireless link, or over a sequence of wireless links including one or more intermediate nodes. Only pairs of nodes that lie within one another's transmission radius can directly communicate with each other. Wireless link failures occur when previously communicati...

multi agent markov decision processes (mmdps), as the generalization of markov decision processes to the multi agent case, have long been used for modeling multi agent system and are used as a suitable framework for multi agent reinforcement learning. in this paper, a generalized learning automata based algorithm for finding optimal policies in mmdp is proposed. in the proposed algorithm, mmdp ...

In wireless sensor network, traditional security mechanisms such as cryptographic methods need a large consumption of resources such as memory, speed, and communication bandwidth. And by using such techniques it is not possible to detect malicious, faulty and selfish nodes that harm to network. Alternatively, trust methods calculate trust of sensor nodes and thereby help to detect malicious, se...

For nodes’ mobility in mobile P2P networks and the consistency of overlay network, an unstructured Modified Gnutella-like P2P protocol (M-GIA) is proposed in this paper. The advantage of GIA protocol is presented fully, while the physical location information of nodes and the distance between nodes as parameters are added into the GIA protocol. The distance between two nodes can decide logical ...

Given the massive number of interconnects in Spiking Neural Networks (SNNs), distributing spikes effciently becomes a critical issue for the efficient hardware emulation of large-scale SNNs. In this work, the AER-SRT (Address Event Representation over Synchronous Serial Ring Topology) architecture for spike transmission is proposed. AER-SRT is a light, easily scalable, packet-based solution imp...