An Enhanced Real-Time Routing Protocol with load distributionERTLD ;Compared to Baseline Routing Protocols In MWSN

Mobile wireless sensor network (MWSN) is a wireless ad hoc network that consists of avery large number of tiny sensor nodes communicating with each other in which sensornodes are either equipped with motors for active mobility or attached to mobile objectsfor passive mobility. A real-time routing protocol for MWSN is an exciting area of research because messages in the network are delivered according to their end-to-end deadlines (packet lifetime) while sensor nodes are mobile. This paper proposes an enhanced realtime with load distribution (ERTLD) routing protocol for MWSN which is based on our previousrouting protocol RTLD. ERTLD utilized corona mechanism and optimal forwardingmetrics to forward the data packet in MWSN. It computes the optimal forwarding nodebased on RSSI, remaining battery level of sensor nodes and packet delayover one-hop. ERTLDensures high packet delivery ratio and experiences minimum end-to-end delay in WSNand MWSN compared to baseline routing protocol. . In this paper we consider a highly dynamic wireless sensor network system in which the sensor nodes and the base station(sink) are mobile.ERTLD has been studied and verified and compared with baseline routing protocols RTLD,MM-SPEED , RTLCthrough Network Simulator- 2(NS2)

Selective Neck Dissection in the Management of the Clinically Node-Negative Neck

Objective: to evaluate the efficacy of the selective neck dissection in the management of the clinically node-negative neck. Study Design case histories were evaluated retrospectively. Methods the results of 75 neck dissections performed on 52 patients were studied. Results theprimarysites were oral cavity 20, oropharynx 7, hypopharynx 4, and latynx 21. 14 necks (23%) were node positive on pathological examination. The number of positive nodes varied from 1 to 9 per side. Of necks with positive 4 (24%) had extracapsular spread. The median follow up was 24 months. Two recurrences developed outside the dissected field. The incidence of regional recurrences was similar in patients in whom nodes were negative on histological examination 3% when compared with patients with positive nodes without extracapsular spread 4%. In contrast regional recurrence developed in 18% of necks with extracapsular spread. This observation was statistically significant. Patients having more than two metastatic lymph nodes had a higher incidence of recurrent disease than the patients with carcinoma limited to one or two nodes. Conclusion SND is effective for controlling neck disease and serves to detect patients who require adjuvant therapy.

Performance Evaluation for GPSR and AODV routing protocols at the junctions in VANET

A Vehicular Ad-hoc Network (VANET) is a collection of nodes forming a wireless network, but the nodes of this network are vehicles with special equipment that enable them to communicate with each other. VANET protocols have to face high challenges due to dynamically changing topologies, link breakage and low vehicular density. A suitable and effective routing protocol helps to ensure that messages are reached to their destinations and achieve the desired aim of the application. In this research, we present an analysis of the performance of two major routing protocols used in these networks, which are AODV (Ad hoc On-Demand Distance Vector) and GPSR (Greedy Perimeter Stateless Routing). This analysis is based on various parameters such as end-to-end delay and average dropped packets, in order to find the best protocol which can be used in the network with low density at the junctions. To achieve this purpose, we used a simulator OPNET_17.5. Depending on the simulation results, we have obtained and the analysis and comparison of two protocols at different low density contract. We found that GPSR protocol has better performance end-to-end delay and average dropped packets are used as the performance metrics, and is better for VANET under the low vehicular density simulation scenario at junctions.

2x2 MIMO LTE signal transmission over fiber optics using ROF technology

this research studies 2x2 MIMO LTE signal transmission from the main tower eNB and the relay node RN over single mode fiber using ROF technology and take advantage of the WDM technology, the results show the ability of ROF to accommodate MIMO communication with high efficiency. The network has been simulated and analyzed using Optisystem program, and the results were more than promising.

Using Thiessen Polygon Method In Calculate the Flow Out Of Node In Water Distribution Network

This search includes doing an analytical study to show the outcomes of introduse the Thiessen Polygon method in calculate the flow out of node in water distribution system ، and doing the hydraulic calculation based on the new method’s outcomes and comparing these outcomes with field measurements which conducted in several control points .

Performance Comparison Among Reactive And Proactive Routing Protocols in Vehicular Networks with Low Vehicular Density

Vehicular Ad Hoc Network (VANET) is a form of Mobile Ad Hoc Networks, but the nodes of this network are vehicles with special equipment to enable them to communicate with each other. These networks need to implement protocols to ensure that messages are reached to their destinations and achieve the desired goal of the application. In this paper, we present an analysis of the performance of a number of major routing protocols used in these networks which protocols AODV (Ad hoc On-Demand Distance Vector), DSR (Dynamic Source Routing), and OLSR (Optimized link state routing). This analysis is based on various parameters such as packet delivery ratio and end-to-end delay, in order to find the best protocol can be used in the network with low density. To achieve this purpose, we used a simulator OPNET_17.5. Depending on the simulation results we have obtained and the analysis and comparison of these protocols at different low density contract .We found that the protocol AODV is the best among the studied protocols under the conditions set out in this study.

Enhancing Cost In Interconnection Networks by hybridization

The most important characteristic of Massively Parallel Computing systems is the topology of the network that means how to connect the processors with each other so that provides fast data transfer and low cost. In this research, we will find new link networks that provide speed in the transport and low cost compared with other traditional networks for connecting processors. Interconnection networks are divided to be static networks so that fixed links between processors, while dynamic networks so that every communication between two processors owns more than one path. Each network differs from the other in cost which express the number of links within this network, and speed which express the network diameter and bisection. The network is best whenever the cost is less and diameter is less but bisection is larger. In this research I compared between these networks and then look for new networks through hybridization between core networks. After that I studied the specification of hybrid interconnections compared with its constituent core networks.