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Nancharaiah B.,Andhra University | Chandra Mohan B.,Bapatla Engineering College andhra Pradesh
2014 2nd International Conference on Business and Information Management, ICBIM 2014 | Year: 2014

A Mobile Adhoc Network (MANET) is an assortment of mobile nodes that can establish an adhoc network without any centralized structures. Networking infrastructure such as the base stations is unavailable for MANET. The interconnected collection of wireless nodes depends on its position and, its transmitting and receiving radio capacity to create a wireless connectivity and form a multi-hop graph or an 'adhoc' network. Routing in MANET is used for finding the multi-hop paths to transmit the data flow through the network while optimizing one or more performance measures. In this paper, modified Ant Colony Optimization (ACO) has been proposed for the optimization for MANET routing protocol. The modifications have been incorporated in Adhoc On-demand Distance Vector (AODV) routing. The proposed modified Ant Colony Optimization algorithm performs better compared to existing algorithms(AODV and Cooperative Opportunistic Routing in Mobile Adhoc Networks i.e. CORMAN) in terms of end-to-end delay, route acquisition time, throughput, total cache replies and packet delivery ratio. © 2014 IEEE. Source


Rajesh K.V.,Bapatla Engineering College andhra Pradesh | Jawahar Babu P.,Bapatla Engineering College andhra Pradesh | Giri Prasad G.,Bapatla Engineering College andhra Pradesh | Sudheer T.,Bapatla Engineering College andhra Pradesh | Sudheer G.,Bapatla Engineering College andhra Pradesh
Biosciences Biotechnology Research Asia | Year: 2011

In recent years there has been a phenomenal increase in the use of alkaline proteases as industrial catalysts. These enzymes offer advantages over the use of conventional chemical catalysts for numerous reasons, for example they exhibit high catalytic activity, a high degree of substrate specificity, can be produced in large amounts and are economically viable. Bacterial alkaline proteases constitute an important group of industrial enzymes. The objective of the present study was to determine the significant parameters in the economical production and optimize the conditions for alkaline protease by Bacillus subtilis MTCC1790 in submerged fermentation by using Taguchi experimental design. This approach facilitated the study of interaction of a large number of variables spanned by factors and their settings with a small number of experimental runs leading to considerable economy in time and cost for the process optimization. There are Five factors viz., carbon, nitrogen, metal ions, inoculum% and agitation, each at two levels were selected and an orthogonal array layout of L16 (4)5 performed. The experiment result indicated that dextrose (0.6%), NH 4Cl (0.6%), Ca 2+ as metal ions, inoculum (8%) and agitation (100 rpm) were the important factors for alkaline protease production. At this optimum condition, the yield of protease production by Bacillus subtilis MTCC1790 was found to be 286 U/mL. Source

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