oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2017 ( 1 )

2016 ( 5 )

2015 ( 22 )

2014 ( 30 )

Custom range...

Search Results: 1 - 10 of 661 matches for " Prabhu "
All listed articles are free for downloading (OA Articles)
Page 1 /661
Display every page Item
Designing and Verifying Communication Protocols Using Model Driven Architecture and Spin Model Checker  [PDF]
Prabhu Kaliappan, Hartmut Koenig
Journal of Software Engineering and Applications (JSEA) , 2008, DOI: 10.4236/jsea.2008.11003
Abstract: The need of communication protocols in today’s environment increases as much as the network explores. Many new kinds of protocols, e.g. for information sharing, security, etc., are being developed day-to-day which often leads to rapid, premature developments. Many protocols have not scaled to satisfy important properties like deadlock and livelock freedom, since MDA focuses on the rapid development rather than on the quality of the developed models. In order to fix the above, we introduce a 2-Phase strategy based on the UML state machine and sequence diagram. The state machine is converted into PROMELA code as a protocol model and its properties are derived from the sequence diagram as Linear Temporal Logic (LTL) through automation. The PROMELA code is interpreted through the SPIN model checker, which helps to simulate the behavior of protocol. Later the automated LTL properties are supplemented to the SPIN for the verification of protocol properties. The results are compared with the developed UML model and SPIN simulated model. Our test results impress the designer to verify the expected results with the system design and to identify the errors which are unnoticed during the design phase.
Evolutionary Relationship of Wheat Protein Disulphide Isomerase (PDI) Gene Promoter Sequence Based on Phylogenetic Analysis  [PDF]
Arun Prabhu Dhanapal
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.33045
Abstract: Protein disulphide isomerase (PDI) is an oxidoreductase enzyme abundant in the endoplasmic reticulum (ER). In plants, PDIs have been shown to assist the folding and deposition of seed storage proteins during the biogenesis of protein bodies in the endosperm. Cloning and characterization of the complete set of genes encoding PDI and PDI like proteins in bread wheat (Triticum aestivum cv. Chinese Spring) and the comparison of their sequence, structure and expression with homologous genes from other plant species were reported in our previous publications. Promoter sequences of three homoeologous genes encoding typical PDI, located on chromosome group 4 of bread wheat, and PDI promoter sequence analysis of Triticum urartu, Aegilops speltoides and Aegilops tauschii had also been reported previously. In this study, we report the isolation and sequencing of a ~700 bp region, comprising ~600 bp of the putative promoter region and 88 bp of the first exon of the typical PDI gene, in five accessions each from Triticum urartu (AA), Aegilops speltoides (BB) and Aegilops tauschii (DD). Sequence analysis indicated large variation among sequences belonging to the different genomes, while close similarity was found within each species and with the corresponding homoeologous PDI sequences of Triticum aestivum cv. CS (AABBDD) resulting in an overall high conservation of the sequence conferring endosperm-specific expression.
Genomics of crop plant genetic resources  [PDF]
Arun Prabhu Dhanapal
Advances in Bioscience and Biotechnology (ABB) , 2012, DOI: 10.4236/abb.2012.34054
Abstract: Plant genetic resources collection and utilization had made a huge impact in balancing the genetic diversity of the existing crop plant species and their application in genome based studies had also increased widely. Primarily studies were based on model species, although it now enhances the transferability of information to crops and related species. With the tremendous outbreak of new high-throughput technologies like next-generation sequencing (NGS) and reduction in their costs are bringing many more plants within the range of genome and transcriptome level analysis. The completion of reference genome sequences for many important crops and the ability to perform high-throughput resequencing are providing opportunities for improving our understanding of the crop plant genetic resources to accelerate crop improvement. The future of crop improvement will be centred on comparisons of individual crop plant genomes, and some of the best opportunities may lie in using combinations of new genetic mapping strategies and evolutionary analyses to direct and optimize the discovery and use of genetic variation. Here I review the importance of crop plant genetic resources and insights that have been emerged in recent years.
Analysis of Material Behavior for Friction in a Nozzle for Turbomachinery and High Speed Vehicles  [PDF]
S. M. Prabhu, Abbas Mohadeen
Materials Sciences and Applications (MSA) , 2011, DOI: 10.4236/msa.2011.210200
Abstract: Shock-induced separation of turbulent boundary layers represents a long-studied problem in compressible flow, bearing, for example, on applications in high speed aerodynamics, rocketry, wind tunnel design, and turbomachinery. Experimental investigations have generally sought to expose essential physics using geometrically simple configurations.
Sections of simplices
Nagabhushana Prabhu
International Journal of Mathematics and Mathematical Sciences , 1999, DOI: 10.1155/s0161171299224015
Abstract: We show that for ¢ d/2 ¢ ¢ ‰ ¤k ¢ ‰ ¤d, the relative interior of every k-face of a d-simplex ”d can be intersected by a 2(d ¢ ’k)-dimensional affine flat. Bezdek, Bisztriczky, and Connelly's results [2] show that the condition k ¢ ‰ ¥ ¢ d/2 ¢ above cannot be dropped and hence raise the question of determining, for all 0 ¢ ‰ ¤k,j Keywords Simplex --- polytope --- face-lattice.
Fixed points of rotations of n-sphere
Nagabhushana Prabhu
International Journal of Mathematics and Mathematical Sciences , 1999, DOI: 10.1155/s0161171299222211
Abstract: We show that every rotation of an even-dimensional sphere must have a fixed point.
INCLUSION IN LAW AND EXCLUSION IN PRAXIS: THE SCHEDULED TRIBES & OTHER TRADITIONAL FOREST DWELLERS (RECOGNITION OF FOREST RIGHTS) ACT 2006
Pradip Prabhu
Socio-Legal Review , 2010,
Abstract: In this comment, the author describes the intricacies of the Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act, 2006. He highlights the role of the forest dwellers in urging the legislature for the enactment of such a legislation. According to the author it is unjustified on the part of the government to acquire forest land without following the due process of law. Throughout his work the author focuses on answering the question as to whether the Forest Rights Law can replace a conservation regime based on the exclusion of the citizens from the forests.
Low molecular weight dextran
Prabhu S
Indian Journal of Dermatology, Venereology and Leprology , 2001,
Abstract:
Trans-esophageal echocardiography for tricuspid and pulmonary valves
Prabhu Mahesh
Annals of Cardiac Anaesthesia , 2009,
Abstract: Transesophageal echocardiography has been shown to provide unique information about cardiac anatomy, function, hemodynamics and blood flow and is relatively easy to perform with a low risk of complications. Echocardiographic evaluation of the tricuspid and pulmonary valves can be achieved with two-dimensional and Doppler imaging. Transesophageal echocardiography of these valves is more challenging because of their complex structure and their relative distance from the esophagus. Two-dimensional echocardiography allows an accurate visualization of the cardiac chambers and valves and their motion during the cardiac cycle. Doppler echocardiography is the most commonly used diagnostic technique for detecting and evaluating valvular regurgitation. The lack of good quality evidence makes it difficult to recommend a validated quantitative approach but expert consensus recommends a clinically useful qualitative approach. This review ennumerates probe placement, recommended cross-sectional views, flow patterns, quantitative equations including the clinical approach to the noninvasive quantification of both stenotic and regurgitant lesions.
The First Law of Black Hole Mechanics for Fields with Internal Gauge Freedom
Kartik Prabhu
Physics , 2015,
Abstract: We derive the first law of black hole mechanics for physical theories based on a local covariant and gauge-invariant Lagrangian where the dynamical fields transform non-trivially under the action of some internal gauge group. The theories of interest include General Relativity formulated in terms of tetrads, Einstein-Yang-Mills theory and Einstein-Dirac theory. Since the dynamical fields of these theories have some internal gauge freedom, we argue that there is no natural group action of diffeomorphisms of spacetime on such dynamical fields. In general, such fields cannot even be represented as smooth, globally well-defined tensor fields on spacetime. Consequently the derivation of the first law by Iyer and Wald cannot be used directly. Nevertheless, we show how such theories can be formulated on a principal bundle and that there is a natural action of automorphisms of the bundle on the fields. These bundle automorphisms encode both spacetime diffeomorphisms and internal gauge transformations. Using this reformulation we define the Noether charge associated to an infinitesimal automorphism and the corresponding notion of stationarity and axisymmetry of the dynamical fields. We can then obtain a general first law of black hole mechanics for such theories. The first law relates the perturbed Hamiltonians at spatial infinity and the horizon and, that the horizon contributions take the form of a "potential times perturbed charge" term. We further identify the gravitational potential and perturbed charge as the temperature and perturbed entropy of the black hole. We also comment on the ambiguities in defining a prescription for the total entropy for black holes.
Page 1 /661
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.