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The paper presents a novel resource and service discovery mechanism for MANETs using Routing Intelligent Mobile Agents(RIMAs). RIMAs periodically collect routing, resource and service availability information and index the same in appropriate RIMA nodes. Every mobile node is close to atleast one RIMA node. The mobile node running an application in need of a resource or a service dispatches a Discovery agent to its nearest RIMA node. The index available at the RIMA node will guide the Discoverer agent to the resource or service node. Analysis of the method reveals the computational complexity to be of the order of square of number of RIMA nodes. Communication overheads are the product of number of generated agents, agent size and number of hops travelled by an agent. The method has been simulated and tested on MANETs of varying sizes from 50 to 800 nodes. Simulation snapshots and results show the proper working and success of the algorithm.

This paper presents a power, latency and throughput trade-off study on NoCs by varying microarchitectural (e.g. pipelining) and circuit level (e.g. frequency and voltage) parameters. We change pipelining depth, operating frequency and supply voltage for 3 example NoCs -16 node 2D Torus, Tree network and Reduced 2D Torus. We use an in-house NoC exploration framework capable of topology generation and comparison using parameterized models of Routers and links developed in SystemC. The framework utilizes interconnect power and delay models from a low-level modelling tool called Intacte[1] 1 . We find that increased pipelining can actually reduce latency. We also find that there exists an optimal degree of pipelining which is the most energy efficient in terms of minimizing energy-delay product.

Primary carcinoma of the gallbladder is an uncommon malignancy with a variable incidence. Women are affected generally than men (3-4:1) with higher incidence in increasing age. The signet ring cell sub type of adenocarcinoma is a rare and aggressive variant carrying worse prognosis. We report a case of primary signet ring cell carcinoma of gallbladder in a 55yr old woman. Ultrasound showed thickened gallbladder with multiple gallstones. Patient underwent open cholecystectomy. Grossly gallbladder was thickened with multiple stones. Histopathological examination revealed sheets of signet ring cells infiltrating full thickness of the wall. H&E, periodic acid-Schiff (PAS), Alcian blue & Cytokeratin 7 stains confirmed presence of signet ring cells. Post-op Endoscopy with biopsy was done to rule out primary in stomach. Early diagnosis and new lines of treatment in chemotherapy or new biological therapy should be encouraged to improve the survival and life quality.

Efficient resource discovery and indexing is the assured way to provide low cost customized resource retrieval service in a mobile ad hoc environment. We present a novel resource discovery mechanism for MANETs that uses Routing Intelligent Mobile Agents(RIMAs). RIMAs periodically collect routing and resource availability information and index the same in capable RIMA nodes. At least one local RIMA node is known to other mobile nodes. The mobile node running an application in need of a resource dispatches a ResourceDiscoverer agent to its nearest RIMA node. The index available at the RIMA node will guide the ResourceDiscoverer to the Data Container node. The method has been simulated and tested on MANETs of varying sizes from 50 to 800 nodes. Simulation snapshots and results show the proper working and success of the algorithm.