Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

It is important to determine the place for erecting communication devices such as access points and wireless routers alongside the road to offer communication services to vehicles moving on the road. The vehicle density varies largely in the city areas, urban and sub urban areas. VANET (Vehicular Ad hoc Network) consists of vehicles moving with a high velocity on either direction of road, making them to communicate with each other to exchange safety messages and share other information, useful for the safety of passenger and driver. Vehicle also exchanges data that belongs to infotainment applications such as video streaming. High mobility of vehicles causes frequent path disconnections between them, due to which the data being accessed becomes unavailable. Replication is one of the popular techniques to increase data availability among nodes in any network by making them available at many nodes other than the originating node. While replication increases the data availability, it also adds to the cost of replication which may deteriorate the performance of the system. Since VANET has varying density of vehicles in city and highway locations we decide the number of replicas for dense and sparse region dynamically based on the density of vehicles in both. It is necessary to keep less number of replicas in city region as there is going to be less path disconnection with large numbers of vehicle, whereas highway situation may require more number of replica nodes since it may encounter frequent path disconnections. We propose an algorithm to allocate replica dynamically in this way and prove the benefits obtained in terms of replication cost. © IAEME Publication.

World University root node

Department of Software and Systems Engineering

School of Information Technology and Engineering

Vellore Campus

Department of Information Technology

Department of Digital Communications

International Journal of Civil Engineering and Technology

An approach for dynamic replica allocation for sparse (urban/sub-urban) and dense regions (city side) in vanet

In day to day life, there are enormous amount of data has been collected, stored, processed and transmitted. The computer revolution and the Internet has brought radical change to an organization's environment. However a group of people access and manipulate information is becoming radically different for the ease of decision making. So, to extract the knowledge from the huge amount of data can be done only by unlocking the hidden data into some useful information. For this we have a best technique called Data mining. Data mining techniques are widely used in classification and prediction in the field of bioinformatics. In a medical diagnostic system where we wish to predict a patient disease based on various laboratory test, where some of the lab test results may not be essential to diagnosis the problem. This created a seed for us to go for the task of feature selection using Chi-Square attribute evaluation which can deal with the identification and elimination of noisy features and to provide accurate and quality diagnosis to the patients and also reduced the amount of storage in the databases. © Research India Publications.

International Journal of Applied Engineering Research

Feature reduction using support vector machine

Steganography is an art of hiding the fact that communication is taking place. It is a process of hiding information inside the stego-media i.e. Image,audio and video. The format of communicating using digital images is most popular because of their frequency of use on the internet. Different applications uses different steganography techniques depending on the criteria level like invisibility of the secret images and few applications require large information in different formats to be hidden. This paper intends to give an overview of image steganography, its uses and techniques. It also attempts to provide steganography techniques suitable for different applications. It also facilitates to send stego image to authenticated users for decrypting the hidden information via social network. © Research India Publications.

A framework on secure data transmission using steganography techniques

Steganography is the way of hiding data in such a way that nobody except the intended receiver can detect the presence of data and retrieve it. The most widely used method used for image Steganography is LSB modification method. Although it is a simple technique, but the probability of detecting the hidden data is high since the present Steganalysis algorithms are capable enough to detect not only the alteration in image but also the secret data hidden in image. The linear plain text hidden in an image can easily be detected. In this paper we proposed a new secure method of implementing image Steganography. Instead of using a single image for Steganography, we are using two images. In this method we are hiding the data without altering the image containing the actual data. Thus it provides more security than other methods of hiding data in the image. The proposed method can also efficiently hide large amount of data which was difficult to hide in other Steganographic methods. © 2005 - 2013 JATIT &amp; LLS. All rights reserved.