Chidambara Kumar K.N.,Ganadipathy Tulsis Jain Engineering College |
Khadeer Basha S.K.,Vellore Institute of Technology |
Shakil Muhammad G.,Islamiah College
International Journal of ChemTech Research | Year: 2014
Manganese doped lead sulphide thin films have been grown on glass substrate by Successive Ionic Layer Adsorption and Reaction Method(SILAR). The structural properties of the grown thin film were studied using X-Ray Diffraction. Lattice constant is determined using Nelson Riley plots. Using X-ray broadening, crystallite sizes, lattice strain and stress were studied by using Williamson - Hall method and Modified Williamson Hall method. © 2014-2015, Sphinx Knowledge House. All rights reserved.
Vishnu Priyan S.,Ganadipathy Tulsis Jain Engineering College |
Srivatsa S.K.,Anna University
International Review on Computers and Software | Year: 2014
JPEG is one of the widely used image formats in digital image processing. The analysis and the discovery of JPEG Image compression methods contribute a major significant part in digital images forensic examination. In recent years, the JPEG images can be compressed several times such as single, double and multiple times, but if the compression is applied to same image again and again without estimation of the quantization results, it becomes very complicated to detect JPEG image compression results. Since same quantization matrix is used for several number of compression process, the results of quantization has to be analyzed in each step of compression to solve the above problem. Moreover, error values in the quantized matrix and resizing of the image samples are not carried out effectively. In order to overcome these problems, in this research work, compressed images are resized using improved seam covering method and estimation of quantization matrix results for single and double DCT compression methods using Fuzzy Neural Network (FNN) to investigate the error values. From FNN, the quantization matrix result is examined in DCT compression methods in order to differentiate the singly and doubly compressed images, which results quantization error values in the compression methods. Wide-ranging of experiments shows that the proposed DCT compression with FNN have higher detection rate for double and single JPEG compression successfully when compared with the existing DCT compression methods extensively. © 2014 Praise Worthy Prize S.r.l.-All rights reserved.
Ramanathan P.,Vellore Institute of Technology |
Marimuthu R.,Vellore Institute of Technology |
Sarjila R.,Ganadipathy Tulsis Jain Engineering College |
Ramasamy S.,Vellore Institute of Technology |
Arulmozhivarman P.,Vellore Institute of Technology
Journal of Theoretical and Applied Information Technology | Year: 2012
This paper reviews some of the recent signal conditioning and Interface circuits for the capacitive type sensors. This paper gives the brief idea of advantages and limitations of interface circuits for the various capacitive sensors. The sensor output may be either current or voltage but it has to be converted to the desired output range only by the signal conditioning circuit. Signal conditioning circuits provides the analog output in the desired range; this can be converted to digital through Analog to Digital converter. The signal conditioning circuit should able to produce not only the convenient of output voltage or current levels but it has to provide the isolation, impedance matching, linearization with the input, proper gain adjustment with the amplification, filtering of unwanted signals, etc. Here we reviewed the four different methodologies of the proposed signal conditioning and interfacing circuits with its advantageous and limitations. © 2005 - 2012 JATIT & LLS. All rights reserved.
Muthuselvi G.,Ganadipathy Tulsis Jain Engineering College |
Shanmugasundaram M.,Vellore Institute of Technology
International Journal of Applied Engineering Research | Year: 2014
Subsynchronous Resonance (SSR) is a potential problem in power systems having series compensated transmission lines. Flexible AC Transmission Systems (FACTS) Controllers are widely applied to mitigate Subsynchronous Resonance (SSR). A long transmission line needs controllable series as well as shunt compensation for power flow control and voltage regulation. This can be achieved by suitable combination of passive elements and active FACTS controllers. In this paper, series passive compensation and shunt active compensation provided by a static synchronous compensator (STATCOM) connected at the electrical center of the transmission line are considered. It is possible to damp subsynchronous resonance (SSR) caused by series capacitors with the help of an auxiliary subsynchronous damping controller (SSDC) on STATCOM. The objective of this paper is to investigate the SSR characteristics of the system and mitigation of SSR with STATCOM SSDC. The analysis of SSR with STATCOM is carried out based on Eigen value analysis. The study is performed on IEEE First Benchmark Model (FBM). © Research India Publications.
Rajalakshmi C.N.,Ganadipathy Tulsis Jain Engineering College |
Ilango P.,Vellore Institute of Technology
International Journal of Applied Engineering Research | Year: 2015
A grid environment includes different resources managed by different organizations in different geographical locations. Resource Discovery is the process of finding the suitable resource for users in Grid, which depends on the description of resources given by the users. According to the resource request the resource discovery model should return an appropriate resource if exist in the grid. Resource discovery is a major issue In grid resource management because of the heterogeneous resources which are distributed over the network. This paper proposes a reliable and scalable grid resource discovery Architecture. The architecture combines software agents for autonomous nature, Peer-to-Peer network for reliability, and ontology for specifying the resource with a pack of algorithms for discovering the resource in the grid environment. The paper expo how the Architecture satisfies the reliability and other resources discovery features. © 2015, Research India Publications. All rights reserved.