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

Most of the researchers and scientists are striving towards the enhancement of Genetic Algorithm (GA) which is under the field of Bio-Informatics. In general a Genetic Algorithm is solved by using Crossover and Mutation method. Here Crossover refers to a random shifting of a child in order to make new tours and Mutation adjust the Crossover. However, a Genetic Algorithm is efficient in itself, yet there are two problems that can be further optimized to get better results. Those problems are: During the encoding of tour if population is less, it may result in identical solutions, which is invalid. To solve the first problem we need to increase the population size. But on doing so, the time complexity will rise exponentially. In this paper I am proposing a modified Genetic Algorithm which essentially aims at eliminating the above stated problems. Furthermore, I will try to demonstrate this solution by an application that might be used by a detection based database. © Research India Publications.

Department of Software and Systems Engineering

School of Information Technology and Engineering

Vellore Campus

Department of Digital Communications

World University root node

International Journal of Applied Engineering Research

A modified and efficient genetic algorithm to address a travelling salesman problem

A segment of a code or a program segment displays different or multiple behaviors when it is executed for multiple numbers of times or when the program is on fly. This divergence of behavior associated within the runtime behavior of a program segment implies that we can apply different optimization strategies on the same piece of code or even for a bunch of code which are collectively referred as modules which together makes a system or a component that aims in proper functioning of a system. In this paper we focus on an aggressive optimization strategy that can be applied to any part of a code segment to identify the number of actors (operators, modules, loops) and also to analyze statically the involvement of those actors over the program and to reduce the program complexity and memory.

International Journal of Engineering and Technology

Modularization based code optimization technique for ensuring software product quality

Polycrystalline samples of the Ca3-xNdxCo4-xCuxO9 (x = 0.0 - 0.4) were prepared by the sol-gel cum combustion method using sucrose to investigate the effects of the coupled substitution of Nd and Cu on Ca and Co sites simultaneously on electrical property of Ca3Co4O9 (Co349). The products were characterized by powder x-ray diffraction (XRD), thermogravimetry (TG) / differential thermal analysis (DTA) and scanning electron microscopy (SEM). Powder XRD patterns reveal the formation of single-phase products up to x = 0.4. Coupled substitution increases the solubility of Cu on Co site, in contrast to the limited solubility of Cu (x = 0.3) when separately substituted. TGA confirms the formation of the Ca3Co4O9 phase at around 680 0C. The grain size of the parent and substituted products is in the range of 200-250 nm. Electrical resistivity (ρ) measurement was performed in the temperature range of 300 - 800 K. Electrical resistivity (ρ) of parent sample shows metallic type conduction behavior up to 500 K and above 500 K, it shows semiconducting behavior. All the substituted compositions show semiconducting behavior with increasing electrical resistivity with increasing x. The conduction mechanism was also analyzed. Parent and substituted samples behave thermally activated conduction mechanism in the temperature range of 600 – 800 K.

Department of Chemistry

School of Advanced Sciences

Advanced Materials Research

High-Temperature Electrical Transport Property of Misfit Cobaltite of Ca3-xNdxCo4-xCuxO9 (x = 0.0 – 0.4)

Polycrystalline samples of Ca3-xNaxCo 2-xMnxO6 (x=0.0-0.5) have been prepared by the sol-gel cum combustion method using sucrose in order to investigate the effects of the coupled substitution of Na and Mn on Ca and Co sites on the transport properties of Ca3Co2O6(Co326). The products were characterized by Fourier transform infrared spectroscopy, powder x-ray diffraction (XRD), thermogravimetry (TGA), differential thermal analysis and scanning electron microscopy. XRD patterns reveal the formation of single-phase products up to x=0.5. Coupled substitution increases the solubility of both Na and Mn on Ca and Co sites, respectively, in contrast to the limited solubility of Na and Mn (x=0.2) when separately substituted. TGA confirms the formation of the Ca3Co2O6 phase at temperatures ∼720 °C. The grain size of the parent and substituted products is in the range 150-250 nm. Electrical resistivity and Seebeck coefficient were measured in the temperature range 300-800 K. Resistivity shows semiconducting behavior for all the compositions, particularly in the low-temperature regime. The Seebeck coefficient increases with temperature throughout the measured temperature range for all compositions. The maximum Seebeck coefficient (200 μV K -1) is observed for x=0.5 at 825 K, and this composition may be optimal for high-temperature thermoelectric applications. © 2009 National Institute for Materials Science.