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Search Results: 1 - 10 of 401264 matches for " M. Maheswari "
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A Novel Custom Topology Generation for Application Specific Network-on-chip Using Genetic Algorithm Optimization Technique
M. Maheswari
Journal of Artificial Intelligence , 2013,
Abstract: In Networks-on-chips (NoC), the main sources of power consumption are global interconnection links and routers. In Application Specific NoC (ASNoC) power can be minimized by mapping the cores on the application specific topology (custom topology) rather than mapping on the standard topologies. In ASNoC, the design of the topology plays an important role in minimizing the power consumption and hop count. In this study, we propose a novel topology generation algorithm using genetic algorithm optimization technique to generate a custom topology for ASNoC architectures. We applied the proposed algorithm to six benchmark video applications MPEG 4 decoder, VOPD, MWD, mp3 audio encoder, mp3 audio decoder and DSP. The proposed topology generation algorithm achieves significant amount of power saving and decrease in the average number of hop count compared to the existing custom topology generation algorithms.
Modified Secret Sharing over a Single Path in VoIP with Reliable Data Delivery
K.Maheswari,M. Punithavalli
International Journal of Computer Science Issues , 2012,
Abstract: Voice over Internet Protocol (VoIP) is a new fancy and up growing technology. A major change in telecommunication industry is VoIP. The transmission of Real time voice data is not as easy as ordinary text data. The real time voice transmission faces lot of difficulties. It suffers from packet loss, delay, quality and security. These factors will affects and degrade the performance and quality of a VoIP. This paper addresses the security and packet delivery ratio of a VoIP using modified secret sharing algorithm over a single path with reduced packet loss. The simulation results show that higher security and reduced packet loss is achieved in terms of end €“ to €“ end delay and packet delivery ratio. The user gets bad quality of VoIP at the receiver side. This makes the deployment of real time application a challenging task. To overcome these challenges in VoIP, several solutions have been reported already. The proper selection of active path in the routing protocol has a great impact in terms of packet delivery ratio and route discovery process. To provide end to end security between the source destination pair, the single path routing scheme is introduced.
Analytical Expressions of Concentrations of Substrate and Hydroquinone in an Amperometric Glucose Biosensor
M. Uma Maheswari,L. Rajendran
ISRN Physical Chemistry , 2013, DOI: 10.1155/2013/143870
Abstract:
Analytical Expressions of Concentrations of Substrate and Hydroquinone in an Amperometric Glucose Biosensor
M. Uma Maheswari,L. Rajendran
ISRN Physical Chemistry , 2013, DOI: 10.1155/2013/143870
Abstract: The theoretical model for an amperometric glucose biosensor is discussed. In this model glucose oxidase enzyme is immobilized in conducting polypyrrole. This model contains a nonlinear term related to enzyme reaction kinetics. He’s homotopy perturbation method is used to find the approximate analytical solutions of coupled non-linear reaction diffusion equations. A closed-form expression of substrate and mediator concentration under non-steady-state conditions is obtained. A comparison of the analytical approximation and numerical simulation is also presented. An agreement between analytical expressions and numerical results is observed. 1. Introduction Since the second half of the last century, numerous efforts have been devoted to the development of insoluble immobilized enzymes for a variety of applications [1]. These applications can clearly benefit from use of the immobilized enzymes rather than the soluble counterparts, for instance as reusable heterogeneous biocatalysts, with the aim of reducing production costs by efficient recycling and control of the process [2], as stable and reusable devices for analytical and medical applications [3–9], as selective adsorbents for purification of proteins and enzymes [10], as fundamental tools for solid-phase protein chemistry [11, 12], and as effective microdevices for controlled release of protein drugs [13]. Immobilized enzymes are becoming increasingly popular as reusable, selective analytical chemical reagents in solid-phase flow-through reactors, as membranes in sensors, and as films in dry reagent kits. The attractions of immobilized enzymes from an analytical standpoint are primarily their reusability, and hence cost saving, and the greater efficiency and control of their catalytic activity [14] (e.g., potentially longer half-lives, predictable decay rates and more efficient multistep reactions). The immobilization of enzymes in conducting polymer [15] during electro-polymerization step has proved to be well suited to the preparation of biosensors [16–19]. This method is simple and easy to control. Another important advantage of this immobilization technique is the possibility of entrapping the mediator in the polymer as a dopant anion [20–23] or by covalent fixation on the pyrrole monomer [24]. Bartlett and Whitaker [25] have already presented a theoretical model for an amperometric polypyrrole + glucose oxidase (PPY + GOD) electrode. In their model PPY was considered as an insulating polymer, and the reduced mediator H2O2 was oxidized at the metallic surface after diffusion in the polymer.
Physiological and Biochemical Basis of Water-Deficit Stress Tolerance in Pearl Millet Hybrid and Parents  [PDF]
T. Vijayalakshmi, Y. Varalaxmi, S. Jainender, S. K. Yadav, M. Vanaja, N. Jyothilakshmi, M. Maheswari
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.312211
Abstract: The present investigation was aimed to understand the physiological and biochemical basis of water-deficit stress tolerance in pearl millet [Pennisetum glaucum (L.) R. Br.] hybrid ICMH 356 and its parents ICMR 356 (♂) and ICMB 88004 (♀) in response to and recovery from drought stress and also to comprehend crop adaptation under dryland conditions. A field experiment was conducted in a split plot design with moisture levels as the main plot and genotypes as the sub plots. A comparative analysis of hybrid and parents under well-watered and water-deficit stress conditions revealed that the hybrid was superior over the parents in terms of leaf water relations, excised leaf water retention capacity, accumulation of compatible solutes, photosynthesis, membrane stability index and antioxidative enzyme viz., superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), ascorbate peroxidase (APX) and guaiacol peroxidase (GPOX) activities. ANOVA for these parameters was also found to be significant for genotypes, treatments and their interactions at 0.01% level. Maintenance of superiority in terms of these physiological and biochemical parameters coupled with better recovery ability upon stress relief are crucial physiological mechanisms contributing to water deficit stress tolerance in pearl millet. Simple correlation coefficient analysis revealed significant positive association of yield at 0.01% level with relative water content, leaf water potential, stomatal conductance, photosynthesis, proline, total soluble sugars, free amino acids, membrane stability index, leaf area index and total biomass, while a significant negative association with solute potential and malondialdehyde content, under water-deficit stress clearly indicated that such relationships can be positively attributed to drought tolerance.
Effect of Biomethanated Distillery Spentwash and Pressmud Biocompost on Microbial and Enzyme Dynamics in Sugarcane Grown Soil
M. Selvamurugan,P. Doraisamy,M. Maheswari
Journal of Biological Sciences , 2011,
Abstract: A field experiment was conducted to study the effect of different levels and methods of biomethanated distillery spentwash and pressmud biocompost application on soil microbial and enzymatic activity using sugarcane (Sachharum officinarum) as a test crop at farms of M/S. Bhavani distilleries and chemicals Ltd., T. Pudur, Thimiri, Vellore District. Sugarcane crop was raised with ten treatments comprising the one-time as pre-plant application (30 days before planting) of BDS at 100, 112.5, 150 and 187.5 m3 ha-1, pre and post-plant application of BDS at 112.5, 150 and 187.5 m3 ha-1 as split doses at various stages of crop growth and application of biocompost at 2.5 and 5 t ha-1 along with control. The soil samples were collected at 90 days intervals and analyzed for the change in soil microbial population and enzyme activities. The results of the study showed that the microbial population and enzymatic activities of the soil were substantially increased throughout the crop growth period due to biomethanated distillery spentwash and bio-compost application. The highest microbial population and enzyme activities were recorded with split application of BDS at 187.5 m3 ha-1 along with balance P fertilizer. This study revealed that the utilization of biomethanated distillery spentwash at 187.5 m3 ha-1 as split doses along with balance phosphorus requirement through inorganic fertilizer could improve the microbial population and enzyme activities in sugarcane grown soil.
Some Results on Vertex Equitable Labeling  [PDF]
P. Jeyanthi, A. Maheswari
Open Journal of Discrete Mathematics (OJDM) , 2012, DOI: 10.4236/ojdm.2012.22009
Abstract: Let G be a graph with p vertices and q edges and let A= vertex labeling is said to be a vertex equitable labeling of G if it induces an edge labeling given by such that and , where is the number of vertices v with for A graph G is said to be a vertex equitable graph if it admits vertex equitable labeling. In this paper, we establish the vertex equitable labeling of a Tp-tree, where T is a Tp-tree with even number of vertices, bistar the caterpillar and crown
The Genetic Diversity of TLR4 MHC-DRB Genes in Dairy Goats Using PCR-RFLP Technique
M. Petlane,R. R. Noor,R. R. A. Maheswari
Media Peternakan , 2012,
Abstract: This research was aimed at evaluating the genetic polymorphism of TLR4 and MHC-DRB genes in dairy goats [(Saanen, Etawah Grade-Saanen Crossbred (PESA), and Etawah Grade (PE)] using PCR -RFLP. The two genes are involved in immunity where they play a crucial role in pathogens recognition and presentation to T-cells and CD4 cells. PCR was used to amplify genomic DNA for TLR4 (382 bp) and CaLA-DRB (285 bp) genes fragments. Genetic polymorphism was detected by digesting TLR4 amplimer with AluI while DRB amplimers were digested with PstI and TaqI in two separate reactions. The results showed that TLR4|AluI was monomorphic and fixed with allele T in all three breeds while DRB|TaqI and DRB|PstI loci were found polymorphic for all breeds. Heterozygosity expected (He) and PIC were found low at both DRB|TaqI and DRB|PstI loci in PE and Saanen. Χ2 results showed that DRB|PstI in PE and DRB|TaqI in PESA were not in H-W equilibrium and did not display homozygous recessive genotype. The results declared that TLR4|AluI was not a good for marker for diseases resistance whereas DRB|TaqI and DRB|PstI gave hope for resistance based on their PIC.
Implementation of Energy Management Structure for Street Lighting Systems
C. Maheswari,R. Jeyanthi,K. Krishnamurthy,M. Sivakumar
Modern Applied Science , 2009, DOI: 10.5539/mas.v3n6p30
Abstract: This work aims to develop an Energy efficient and low cost solution for street lighting system using Global System for Mobile communication [GSM] and General Packet Radio Service [GPRS]. GSM and GPRS are used to establish a communication between the streetlights and the Central Monitoring Station [CMS] at the operator side. The whole setup provides the remote operator to turn off the lights when not required, regulate the voltage supplied to the streetlights and prepare daily reports on glowing hours. Power shut downs also can be intimated to the remote CMS operator through GSM and GPRS communication setup. The energy meter placed at the lighting system sends the readings to the remote CMS in the form of short message [SMS]. From the data collected at CMS, energy report is prepared using visual basic programming.
Ontology Based Qos Driven Web Service Discovery
R Suganyakala,M Aarthilakshmi,G R Karpagam,S Maheswari
International Journal of Computer Science Issues , 2011,
Abstract: In today's scenario web services have become a grand vision to implement the business process functionalities. With increase in number of similar web services, one of the essential challenges is to discover relevant web service with regard to user specification. Relevancy of web service discovery can be improved by augmenting semantics through expressive formats like OWL. QoS based service selection will play a significant role in meeting the non-functional user requirements. Hence QoS and semantics has been used as finer search constraints to discover the most relevant service. In this paper, we describe a QoS framework for ontology based web service discovery. The QoS factors taken into consideration are execution time, response time, throughput, scalability, reputation, accessibility and availability. The behavior of each web service at various instances is observed over a period of time and their QoS based performance is analyzed.
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