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The vehicular ad-hoc network is a kind of mobile ad-hoc network which contains mobile nodes on board unit and roadside units by using this three thing this network start communication. Vehicles are communicated to each other, a speed of vehicles are high so that topology of this network changed frequently. One of the main issues of this network is by maintaining the topology of vehicles so that communication...
Transmission line faults are detrimental to a power system but are inevitable. They disrupt power supply and can result in calamitous situations such as blackouts. With the advent of modern technology, protective systems use computer based digital relays. The operation of relays can be made more reliable, accurate and fast by the use of better techniques which are immune to factors such as fault distance,...
The important features of modular multilevel inverters(MMLIs) are lower power dissipations in the switches, low harmonic contents, modularity and outputs with lower electromagnetic interference (EMI). The MMLI discussed is based on the half-bridge topology. A comparative study of two level VSI and 3, 5 level MMLI is discussed in the context of their total harmonic distortion in simulink models.
Many privacy improving techniques have been proposed based on packet encryption to protect the communication privacy of mobile ad hoc networks (MANETs). However, we show that MANETs are still vulnerable under passive statistical traffic analysis attacks. To demonstrate how to discover the communication patterns without decrypting the captured packets, we present Region based statistical traffic pattern...
The security of Network is always important and crucial point for organizations, managing data and its communication. The variety of Techniques are available for securing the Network implemented in hardware and software. The chunk of talented pool of IT sector, has 24 hrs eyes on the happenings of security area whether done through researcher for tightening the security or by hacker to breach the...
Power systems all over the world have to operate very close to their stability limits owing to the ever increasing power demands. Voltage collapses usually occur on power systems which are heavily loaded or faulted or have shortage of reactive power. This paper analyses the voltage stability of the power system under increasing load conditions. Modal analysis technique and Continuation Power flow...
This paper presents a comparative study of conventional and improved incremental conductance (IC) algorithm. In this study the performance of PV system is investigated by using the existing and proposed IC algorithm. The output voltage and the power is calculated in both the cases, these algorithms are implemented to drive the semiconductor switch of the boost converter further for the boost converter...
The preponderance of large scale data radical applications executed by various business areas for performing data preparation and data analytics based on Map Reduce paradigm which can be better implemented on Hadoop. Such data driven applications which are executed on large clusters set up in data centers hike the energy cost which imposes burden on overall data center cost. Thus minimizing parameter...
Islanding is a condition in which the distributed generation along with the local load starts operating independently when isolated from rest of the power system. Because of the adverse effect of island operation, islanding detection is a necessary requirement in distributed generation system and it must be detected accurately and quickly. In present scenario of power system, loads can be balanced,...
In today's scenario, the complexity, loss, cost and size of system are prime requirements of the end user. This paper shows the design technique, parametric analysis, and simulated and fabricated results of parallel coupled transmission line filter operating at 2 GHz, the most used frequency in wireless systems. Microstrip and Stripline technologies are very common for implementation of bandpass and...
Condition Monitoring plays a vigorous role in asset management strategy. Power Transformers are most important and critical component in electrical power transmission and distribution. To have a reliable electricity supply it is necessary to give considerable attention to maintenance of the transformer. Dissolved gas analysis (DGA) of transformer oil is one of the most effective power transformer...
Monitoring ports, harbors and oceanic territories is gaining huge interest especially to combat military crisis, smuggling and terrorist activities. Underwater Wireless Sensor Network can be a viable solution for tracking objects like trespassing ships approaching a harbor and monitoring the activities on the ocean surfaces. In this paper we have proposed a new paradigm for underwater tracking mechanism.
This paper presents an optimal and secure communication of real time data over a CDMA based IP RAN network. In the process of data transmission, a new coding approach for security enhancement and quality improvement based on spectrum utilization and antenna coding is suggested. The traffic model is developed for image and audio data transmission over a wireless channel, having an interference of A...
The tunable meta-materials have special periodic properties which enable them to produce different outcomes when they are used in antenna application. Mechanisms like electronically tunable and mechanically tunable are the usable ones when dealing with these structures. In general the length of the pin via and gap between the patches of these periodic structures are changed to change the impedance...
An attempt is made to develop and carry out the performance evaluation of the different Image Denoising Techniques on the images. This paper discusses the improvement of the recent image denoising techniques from the traditional techniques. The improved denoising filters, succeeded by the median filter are taken into consideration and the improvement of the median filter and its performance parameter...
This paper presents the control of a hybrid energy storage system performance for electric vehicle application. The hybrid energy storage system helps to enhance the life of battery by reducing the peak power demand using an auxiliary energy storage system (AES) based on super capacitor and a bidirectional buck-boost converter. Further, the performance of an electric vehicle in various environments...
Owing to the forever growing demand for faster data transmission speed in the recent or future telecommunication systems, the multiple antenna systems have been actively investigated and successfully deployed for the emerging broadband wireless access networks (e.g., Mobile WiMAX). Even when a wireless channel with high channel capacity is known, we still require to find superior techniques to achieve...
Segmentation of optic disk (OD) is a very important step in automatic Diabetic Retinopathy screening. In this paper, we presented a robust and novel template matching algorithm for automatic detection of OD in retinal images. The size of OD area depends on camera field of view and image resolution. Based on these criteria we formulated and presented OD size estimation algorithm and it is used to create...
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