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Search Results: 1 - 10 of 221235 matches for " C. Arun "
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A Low Power and High Speed Viterbi Decoder Based on Deep Pipelined, Clock Blocking and Hazards Filtering  [PDF]
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2009, DOI: 10.4236/ijcns.2009.26064
Abstract: A high speed and low power Viterbi decoder architecture design based on deep pipelined, clock gating and toggle filtering has been presented in this paper. The Add-Compare-Select (ACS) and Trace Back (TB) units and its sub circuits of the decoder have been operated in deep pipelined manner to achieve high transmission rate. The Power dissipation analysis is also investigated and compared with the existing results. The techniques that have been employed in our low-power design are clock-gating and toggle filtering. The synthesized circuits are placed and routed in the standard cell design environment and implemented on a Xilinx XC2VP2fg256-6 FPGA device. Power estimation obtained through gate level simulations indicated that the proposed design reduces the power dissipation of an original Viterbi decoder design by 68.82% and a speed of 145 MHz is achieved.
A Novel Method of Using API to Generate Liaison Relationships from an Assembly  [PDF]
Arun Tom Mathew, C. S. P. Rao
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.32021
Abstract: A mechanical assembly is a composition of interrelated parts. Assembly data base stores the geometric models of indi-vidual parts, the spatial positions and orientations of the parts in the assembly, and the relationships between parts. An assembly of parts can be represented by its liaison which has a description of its relationships between the various parts in the assembly. The problem is to not only make the information available but also use the relevant information for making decisions, especially determination of the assembly sequence plan. The method described in this paper ex-tracts the feature based assembly information from CAD models of products and build up liaisons to facilitate assembly planning applications. The system works on the assumption that the designer explicitly defines joints and mating condi-tions. Further, a computer representation of mechanical assemblies in the form of liaisons is necessary in order to automate the generation of assembly plans. A novel method of extracting the assembly information and representing them in the form of liaisons is presented in this paper.
Interaction among Cloud Services on Common Software Application with Service Level Agreement
C. Saravanakumar C. Arun
International Journal of Electronics Communication and Computer Engineering , 2011,
Abstract: Nowadays the cloud computing has plays important role for larger organization, IT Industries, educational industries etc. Cloud computing is the complex infrastructure of software, hardware, processing and storage that are available as a service. It has huge number of advantages and also suffers lot of disadvantages. In the Cloud Service User (CSU) point there is no specific protocol, algorithm. There is no design pattern and interface for accessing a cloud services. The Cloud Service Provider (CSP) has to follow their own deployment model which is difficult to understand by the cloud service users or application user. There is no interoperability among the cloud services with different cloud service providers. The proposed work focuses on the interoperability among the cloud service providers with common deployment model in order to provide the effective, reliable and efficient services. The cloud specific services are categorized into cloud sensitive services and cloud insensitive services. In the cloud insensitive services which are more common services can be shared among the CSP services without maintaining the same services into their own deployment model. The services are shared with the help of Service Level Agreement (SLA). Each and every service has to establish the SLA with other services for reusing the services
Gammaless GRBs?
C Sivaram,Kenath Arun
Physics , 2009,
Abstract: The Compactness Problem in GRBs has been resolved by invoking the Lorentz factors associated with the relativistic bulk motion. This scenario applies to GRBs where sufficient energy is converted to accelerate the ejected matter to relativistic speeds. In some situations this may not be a possible mechanism. Hence the gamma rays are trapped in the region. Here we look at these possible scenarios, where the neutrino pair production process dominates, and the neutrinos are able to escape freely. This could give a scenario where release of neutrinos precedes the gamma ray emission, which is much attenuated, possibly explaining why fewer GRBs are observed than what is expected.
Possible Alternate Scenario for short Duration GRBs
C Sivaram,Kenath Arun
Physics , 2009,
Abstract: In this paper we look at new class of objects made up entirely of dark matter particles. We look at these objects as possible candidate for short duration gamma ray bursts eliminating the baryon load problem. These could also provide a possible scenario for the formation of sub-stellar black holes, distinct from the usual Hawking black hole.
Curvature, Phase Space, Holography and Black Hole Entropy
C Sivaram,Kenath Arun
Physics , 2009, DOI: 10.1142/S0218271809016077
Abstract: This paper discusses the thermodynamics of a black hole with respect to Hawking radiation and the entropy. We look at a unified picture of black hole entropy and curvature and how this can lead to the usual black hole luminosity due to Hawking radiation. It is also shown how the volume inside the horizon, apart from surface area, can play a role in understanding the Hawking flux. In addition holography also implies a phase space associated with the interior volume and this happens to be just a quantum of phase space, filled with just one photon. Generalised uncertainty principle can be incorporated in this analysis. These results hold for all black hole masses in any dimensions.
Some Aspects of Rotational and Magnetic Energies for a Hierarchy of Celestial Objects
C. Sivaram,Kenath Arun
Physics , 2010, DOI: 10.1007/s10509-011-0888-2
Abstract: Celestial objects, from earth like planets to clusters of galaxies, possess angular momentum and magnetic fields. Here we compare the rotational and magnetic energies of a whole range of these celestial objects together with their gravitational self energies and find a number of interesting relationships. The celestial objects, due to their magnetic fields, also posses magnetic moments. The ratio of magnetic moments of these objects with the nuclear magnetic moments also exhibits interesting trends. We also compare their gyromagnetic ratio which appears to fall in a very narrow range for the entire hierarchy of objects. Here we try to understand the physical aspects implied by these observations and the origin of these properties in such a wide range of celestial objects, spanning some twenty orders in mass, magnetic field and other parameters.
A Brief Overview of the Major Contribution to Physics by Landau
C Sivaram,Kenath Arun
Physics , 2009,
Abstract: Lev Davidovich Landau was arguably one of the greatest and most versatile physicists. His work spans a very wide range and has had a considerable impact on all areas of physics including condensed matter physics, plasma, high energy and particle physics, fluid dynamics, astrophysics, gravitation, elasticity, etc. Along with his former fellow student, E Lifshitz, he wrote the set of a dozen volumes, the magnificent world-renowned Course of Theoretical Physics which covered topics ranging from mechanics, classical theory of fields, quantum mechanics, electrodynamics of continuous media, fluid dynamics, kinetic theory, theory of elasticity, statistical physics and more.
Dark Energy, Inertia and Mach's Principle
C. Sivaram,Kenath Arun
Physics , 2009,
Abstract: Mach's Principle says that a particle's inertia is due to some interaction of that particle with all the other masses in the universe. Here we explore the possibility of the gravitational interaction energy of the background quantum vacuum energy playing the role of a global Higg's field (described by a varying cosmological constant) entirely contributing to the local inertial masses of particles in the spirit of Mach's principle.
Thermal Gravitational Waves from Primordial Black Holes
C. Sivaram,Kenath Arun
Physics , 2010, DOI: 10.2174/1874381101004010072
Abstract: Thermal gravitational waves can be generated in various sources such as, in the cores of stars, white dwarfs and neutron stars due to the fermion collisions in the dense degenerate Fermi gas. Such high frequency thermal gravitational waves can also be produced during the collisions in a gamma ray burst or during the final stages of the evaporation of primordial black holes. Here we estimate the thermal gravitational waves from primordial black holes and estimate the integrated energy of the gravitational wave emission over the entire volume of the universe and over Hubble time. We also estimate the gravitational wave flux from gamma ray bursts and jets.
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