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Durgāpur, India

Ghosal S.,RCCIIT | Ghosh S.,DIATM | Bose T.K.,Heritage Institute of Technology | Das A.,Kalyani Government Engineering College
2012 1st International Conference on Recent Advances in Information Technology, RAIT-2012 | Year: 2012

Simulation of a mechanical system incorporating the biological control has drawn the fascination of researchers' interest in the research field of advanced prosthetic control and artificial intelligence. This paper generates the idea of modeling of a mechanical prosthetic arm via some heuristic applications of simulation techniques. The introductory part of the paper shows the clinical study of an upper limb amputated patient. Afterwards the experimental approach for measurement of different parameters for the prosthetic arm is described. Then the sets of open loop transfer functions for the study of mechanical prosthetic arm are developed. Optimum transfer functions were initiated in the later part of the paper and finally they are tuned by traditional tuning method as well as the genetic and swarm intelligence tuning algorithms for establishing better results and more efficiency in modeling. © 2012 IEEE. Source

Chakraborty S.,M M M College | Sahoo B.,DIATM | Sahoo S.,National Institute of Technology Durgapur
Journal of Mechanical Science and Technology | Year: 2015

Using a simple density-dependent finite-range effective interaction having Yukawa form, the density dependence of isoscalar and isovector effective masses is studied. The isovector effective mass is found to be different for different pairs of like and unlike nucleons. Using HVH theorem, the neutron-proton effective mass splitting is represented in terms of symmetry energy and its density slope. It is again observed that the neutron-proton effective mass splitting has got a positive value when isoscalar effective mass is greater than the isovector effective mass and has a negative value for the opposite case. Furthermore, the neutron-proton effective mass splitting is found to have a linear dependence on asymmetry β. The second-order symmetry potential has a vital role in the determination of density slope of symmetry energy but it does not have any contribution on neutron-proton effective mass splitting. The finite-range effective interaction is compared with the SLy2, SKM, f−, f0, and f+ forms of interactions. © 2015, Pleiades Publishing, Ltd. Source

Bhattacharya A.,Indian Statistical Institute | Palit S.,Indian Statistical Institute | Chatterjee N.,NSEC | Roy G.,DIATM
ISPA 2011 - 7th International Symposium on Image and Signal Processing and Analysis | Year: 2011

The provision of blind quality assessment is an important requirement for modern multimedia and communication systems. Fragile watermarking techniques have been proposed earlier for this purpose. This paper proposes a novel approach which makes use of both fragile and robust watermarking techniques. The embedded fragile watermark is used to assess the degradation undergone by the transmitted images. Robust image features, on the other hand, are used to construct the reference watermark from the received image, for assessing the amount of degradation of the fragile watermark. Construction of the watermark from the image itself, dispenses with the need for embedding an extraneous watermark which must be made known to the user separately, a significant contribution of the present work in image quality assessment. Another contribution is the use of Singular Value Decomposition (SVD) for the extraction of the fragile watermark. The validity of the proposed approach is veri#ed through extensive simulations using different kinds of gray-scale and color images. © 2011 University of Zagreb. Source

Kanrar S.,DIATM | Mukherjee A.,NEFD
Communications in Computer and Information Science | Year: 2010

The topology of the ad hoc network has a significant impact on its performance. The dense topology has produce high interference and low capacity while the thinly scattered topology is Vulnerable to link failure. Some research work has been done on topology control in wireless networks. The existing topology control algorithms utilize either a purely centralized or purely distributed approach. In this work we have presented the traffic load analysis of the mobile node in the wireless network, by used of cluster concept. The wireless domain has been partitioned into different zones or clusters. Here we present analytically, the hops distance between random cluster heads. We have considered the minimum hops distance between the clusters and shown the traffic load at the gateway node, destination node. We considered that all the nodes randomly move. In this paper we have shown, how clustering affects on the performance with respect to throughput, delay, packet sent and packet received by simulation. © Springer-Verlag Berlin Heidelberg 2010. Source

Chakraborty S.,Mmm College | Sahoo B.,DIATM | Sahoo S.,National Institute of Technology Durgapur
Nuclear Physics A | Year: 2013

Using a density dependent finite-range effective interaction of Yukawa form the nuclear mean field in asymmetric nuclear matter is expanded in terms of power series of asymmetry β (=ρn-ρpρ) as uτ(k, ρ, β) = u0(k, ρ) ± u sym,1(k, ρ)β + u sym,2(ρ)β2. The behavior of nuclear symmetry potential u sym,1(k, ρ) around the Fermi momentum k f is found to be connected to the density dependence of symmetry energy E sym(ρ) and nucleon effective mass m0*m (k = k f, ρ) in symmetric nuclear matter. Two different trends of momentum dependence for nuclear symmetry potential is observed depending on the choice of strength parameters of exchange interaction, but at Fermi momentum it is found to be independent of the choice of parameters. The nuclear symmetry energy E sym(ρ) and its slope L(ρ) are expressed analytically in terms of nuclear mean field in isospin asymmetric nuclear matter using the same interaction. We find that the second order nuclear symmetry potential u sym,2(ρ) cannot be neglected while calculating the density slope of symmetry energy L(ρ) as well as the nuclear mean field in extremely neutron (proton) rich nuclear matter. © 2013 Elsevier B.V. Source

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