Earticle

Path is establish prior to transmission of information from source to destination. Along the established path, packets encounter queuing delay and processing delay in all the nodes through which the packet travels to reach destination. Moreover nodes implement variety of other function like firewall and classification of the packet. Thus every node adds nodal delay in end to end delay. In this paper we proposed to skip node from established path using the broadcast nature of wireless that will reduce nodal delay. Proposed scheme uses skip graph for the skipping of the nodes in the established path. The study shows there is significant reduction in end to end delay in the proposed scheme compared to traditional method. Paths from source to destination are also more stable, particularly when large number of nodes are present in established path.

High-speed data service is important to our national communications infrastructure, and we are pleased to introduce this leading-edge technology in maximizing the utilization of our existing high-capacity hybrid fiber/coax wire, we will be able to provide high-speed Internet access and on-line services efficiently and economically. Electric Power Corporation is a government-owned enterprise established to promote electric power resource development, to run the electric power business with efficiency and to contribute to stable growth of the national economy by ensuring a stable and economical supply of electric power. It seems equivalent to standard cable service and a little faster than standard DSL but the speed is not asynchronous, meaning we get the same speed upstream and downstream. Imagine this, we plug our modem into any power socket at home and we're instantly connected to a high speed broadband ISP. Electric power cable line or transmission lines used for communication purposes along with transmitting electrical energy. Because the power grid is already in place, the electric power cable has the obvious advantage of reducing communication infrastructure cost. However, the power grid designed optimally for power delivery (not the data). We're great on technology, but not so good on working out the rules of the road; nearly all of the industrialized nations have national plans for broadband. This comprehensive strategy can give easy internet access in urban and rural areas.

The turbine rotor blades of a gas turbine engine are designed for operation at elevated temperatures, particularly first stage gas turbine blades. During operation, the turbine blades are subjected to high temperatures and large centrifugal forces. In addition to these, the temperature variations occur at start-up and shutdown cycles of the engine. Due to sudden changes in temperature, transient thermal effects are sighted and time-dependent temperature gradients appear. The estimates of the thermal variations sighted on the turbine blade at various operational speeds of the gas turbine rotor are important in determining the fatigue life. The thermal condition during the startup sequence initiated is considered as a major factor in determining the rotor maintenance interval and individual rotor component life. This work has primarily focused on transient thermal stresses arising in the rotor blade by using Finite Element Analysis. Nowadays, the thermal stresses of the gas turbine parts are determined by user defined software’s that is based on numerical methods which are being used significantly. A typical turbine rotor blade has been modeled by using CATIA V5R21. Turbine blades are made of Nickel-based superalloys have been selected for transient thermal analysis by using ANSYS 15.0. Comparative analysis has also been carried out to determine the suitability and strength of turbine blade material under the same operating conditions. Two blade materials such as IN 792 DS and IN 754 MA have been selected for comparative analysis and these blades were manufactured by Directional solidification and mechanical alloying methods respectively. The physical and mechanical properties are updated to the model and appropriate boundary conditions are applied. Thermal stresses are evaluated for both materials and the results have been compared with IN 738 LC. Static analysis has also been carryout out to examine the structural performance of the alloys. It has been observed that maximum stress and strain are sighted near the root of the turbine blade. The temperature gradients sighted on the turbine blade during acceleration and decelerations are below the melting temperature of the blade materials. It has been noticed that the transient thermal stresses are higher than the steady state thermal stresses. It has been observed that IN 792 DS has better physical and thermo mechanical properties that can withstand higher turbine inlet temperatures and could be suitable material for the manufacturing of turbine blade at Marine and Related Environments.

Intelligent analysis is the development direction of the research for Geo-Video. The key is how to extract automatically the implicit spatial-temporal correlation between in the various targets. For this purpose, this paper presents a dynamic graphs framework to simulate the complex moving target’s behavior patterns in Geo-Video and uses this model to detect abnormal events. Firstly, compute the moving target’s orientation matrix by Optic Flows and use the window clustering algorithm to classify different targets; and then, creating a dynamic graph whose vertex is the cluster center and the weight of edge is the Euclidean distances between two centers; finally, simulate different targets by defining the evolution rule of dynamic graphs in specific geographical scene. Experiments show that the proposed method can directly express the moving target’s behavior patterns and detect abnormal events in Geo-Video. In addition, this proposed method provides a new way of thinking about the intelligent analysis for Geo-Video.

The improvement in propagation characteristics of Wireless Body Area network is required to develop the high quality WBAN systems. In this paper, the power profile for WBAN channel model CM1 &CM2 have been generated by using MICS band. The value of mean path loss has been calculated and compared for different channel models. Through extensive simulations, even the outage probability of different channel models has been plotted. The evaluation is done by calculating the value of Bit error rate for the given values of Signal to noise ratio using different modulation scheme.

A Mobile ad hoc network (MANET) is an infrastructure less network. The nodes in this network are mobile. The topology in MANET keeps on changing. MANETs have its applications in various fields like military, sensor networks, video conferencing etc. This paper discusses about various MANET routing protocols such as Proactive, Reactive, Hybrid, their types, comparison of routing protocols, mobility models in MANET, performance matrices that evaluate the performance of MANET routing protocols and applications of MANET.