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119 results on '"Sellier, J."'

1. Designing a High Performance Parallel Personal Cluster

Author

Kapanova, K. G. and Sellier, J. M.

Subjects
Computer Science - Distributed, Parallel, and Cluster Computing, Computer Science - Performance
Abstract

Today, many scientific and engineering areas require high performance computing to perform computationally intensive experiments. For example, many advances in transport phenomena, thermodynamics, material properties, computational chemistry and physics are possible only because of the availability of such large scale computing infrastructures. Yet many challenges are still open. The cost of energy consumption, cooling, competition for resources have been some of the reasons why the scientific and engineering communities are turning their interests to the possibility of implementing energy-efficient servers utilizing low-power CPUs for computing-intensive tasks. In this paper we introduce a novel approach, which was recently presented at Linux Conference Europe 2015, based on the Beowulf concept and utilizing single board computers (SBC). We present a low-energy consumption architecture capable to tackle heavily demanding scientific computational problems. Additionally, our goal is to provide a low cost personal solution for scientists and engineers. In order to evaluate the performance of the proposed architecture we ran several standard benchmarking tests. Furthermore, we assess the reliability of the machine in real life situations by performing two benchmark tools involving practical TCAD for physicist and engineers in the semiconductor industry., Comment: 12 pages, 12 figures

Published
2016

2. On randomization of neural networks as a form of post-learning strategy

Author

Kapanova, K. G., Dimov, I., and Sellier, J. M.

Subjects
Computer Science - Neural and Evolutionary Computing
Abstract

Today artificial neural networks are applied in various fields - engineering, data analysis, robotics. While they represent a successful tool for a variety of relevant applications, mathematically speaking they are still far from being conclusive. In particular, they suffer from being unable to find the best configuration possible during the training process (local minimum problem). In this paper, we focus on this issue and suggest a simple, but effective, post-learning strategy to allow the search for improved set of weights at a relatively small extra computational cost. Therefore, we introduce a novel technique based on analogy with quantum effects occurring in nature as a way to improve (and sometimes overcome) this problem. Several numerical experiments are presented to validate the approach., Comment: 15 pages, 26 figures

Published
2015
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4. Neumann Series Analysis of the Wigner Equation Solution

Author

Dimov, I., Nedjalkov, M., Sellier, J. M., Selberherr, S., Bock, Hans Georg, Series editor, de Hoog, Frank, Series editor, Friedman, Avner, Series editor, Gupta, Arvind, Series editor, Nachbin, André, Series editor, Ozawa, Tohru, Series editor, Pulleyblank, William R., Series editor, Rusten, Torgeir, Series editor, Santosa, Fadil, Series editor, Seo, Jin Keun, Series editor, Tornberg, Anna-Karin, Series editor, Russo, Giovanni, editor, Capasso, Vincenzo, editor, Nicosia, Giuseppe, editor, and Romano, Vittorio, editor

Published
2016
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5. Sensitivity Analysis of Design Parameters for Silicon Diodes

Author

Sellier, J. M., Georgieva, Rayna, Dimov, Ivan, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Dimov, Ivan, editor, Fidanova, Stefka, editor, and Lirkov, Ivan, editor

Published
2015
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7. Stochastic Formulation of Newton’s Acceleration

Author

Schwaha, P., Nedjalkov, M., Selberherr, S., Sellier, J. M., Dimov, I., Georgieva, R., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Lirkov, Ivan, editor, Margenov, Svetozar, editor, and Waśniewski, Jerzy, editor

Published
2014
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10. Exact Solutions for the Drift-Diffusion Model of Semiconductors via Lie Symmetry Analysis

Author

Romano, V., Sellier, J. M., Torrisi, M., Bock, Hans-Georg, editor, de Hoog, Frank, editor, Friedman, Avner, editor, Gupta, Arvind, editor, Neunzert, Helmut, editor, Pulleyblank, William R., editor, Rusten, Torgeir, editor, Santosa, Fadil, editor, Tornberg, Anna-Karin, editor, Anile, Angelo Marcello, editor, Alì, Giuseppe, editor, and Mascali, Giovanni, editor

Published
2006
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11. Hole Mobility in Silicon Semiconductors

Author

Mascali, G., Romano, V., Sellier, J. M., Bock, Hans-Georg, editor, de Hoog, Frank, editor, Friedman, Avner, editor, Gupta, Arvind, editor, Neunzert, Helmut, editor, Pulleyblank, William R., editor, Rusten, Torgeir, editor, Santosa, Fadil, editor, Tornberg, Anna-Karin, editor, Anile, Angelo Marcello, editor, Alì, Giuseppe, editor, and Mascali, Giovanni, editor

Published
2006
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12. Mixed Finite Element Numerical Simulation of a 2D Silicon MOSFET with the Non-Parabolic MEP Energy-Transport Model

Author

Anile, A. M., Marrocco, A., Romano, V., Sellier, J. M., Bock, Hans-Georg, editor, de Hoog, Frank, editor, Friedman, Avner, editor, Gupta, Arvind, editor, Neunzert, Helmut, editor, Pulleyblank, William R., editor, Rusten, Torgeir, editor, Santosa, Fadil, editor, Tornberg, Anna-Karin, editor, Anile, Angelo Marcello, editor, Alì, Giuseppe, editor, and Mascali, Giovanni, editor

Published
2006
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34. Compton Scattering off polarized electrons with a High Finesse Fabry-Pérot Cavity at JLab

Author

Falletto, N, Authier, M, Bardin, G, Baylac, M O, Bertin, P, Boyer, M, Bugeon, F, Burtin, E, Cavata, C, Chen, J P, Colombel, N, Congretel, G, Coquillard, R, Cosquer, A, Coulloux, G, Couzy, B, Deck, P, Delbart, A, Desforges, D, Donati, A, Duboué, B, Escoffier, S, Farci, F, Frois, Bernard, Girardot, P, Guillotau, J, Henriot, J, Jardillier, J, Jeanney, C, Jorda, J P, Juillard, M, Legou, P, Lhuillier, D, Lussignol, Y, Mackowski, J M, Mangeot, Philippe, Marie, F, Martin, X, Martino, J, Maurier, M, Mazeau, B, Millot, J F, Mitchell, J, Molinie, F, Mols, J P, Mouly, J P, Mur, M, Neyret, D, Pinard, L, Platchkov, S K, Pontet, G, Pussieux, T, Pédrol, T, Queinec, Y, Rebourgeard, P C, Sellier, J C, Tarte, Gérard, Veyssière, C, and Zakarian, A

Subjects
XX
Published
2000

41. Detection of pulmonary arteriovenous malformation by contrast echocardiography in pediatric hereditary hemorrhagic telangiectasia

Author

Balagny, P., primary, Karam, C., additional, Sellier, J., additional, El Hajjam, M., additional, Binsse, S., additional, Chinet, T., additional, Roume, J., additional, Ozanne, A., additional, Bourgault, I., additional, Lesur, G., additional, Blondel, J.-H., additional, Cordier, A., additional, Blivet, S., additional, Fagnou, C., additional, Bonay, M., additional, Lacombe, P., additional, Dubourg, O., additional, and Mansencal, N., additional

Published
2013
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45. Gunn Oscillations Described by the MEP Hydrodynamical Model of Semiconductors.

Author

Kelso, J. A. Scott, Baglio, Salvatore, Bulsara, Adi, Mascali, G., Romano, V., and Sellier, J. M.

Abstract

High-field phenomena in submicron electron devices cannot be described satisfactorily within the framework of the drift-diffusion models that do not include energy as a dynamical variable and are valid only in the quasi-stationary limit, while most hydrodynamical models suffer from serious theoretical drawbacks due to the ad hoc treatment of the closure problem [1]. Here we employ a moment approach, previously introduced in [2, 3] (see also [4] for a complete review) in which the closure procedure is based on the maximum entropy principle while the conduction bands are described by the Kane dispersion relation. The electrons in GaAs are considered as a mixture of two fluids, one representing the electrons in the Γ-valley and the other the electrons in the four equivalent L-valleys. The model comprises the balance equations of electron density, energy density, velocity and energy flux for both populations, coupled to the Poisson equation for the electric potential. [ABSTRACT FROM AUTHOR]

Published
2006
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47. Hole Mobility in Silicon Semiconductors.

Author

Bock, Hans-Georg, Hoog, Frank, Friedman, Avner, Gupta, Arvind, Neunzert, Helmut, Pulleyblank, William R., Rusten, Torgeir, Santosa, Fadil, Tornberg, Anna-Karin, Anile, Angelo Marcello, Alì, Giuseppe, Mascali, Giovanni, Mascali, G., Romano, V., and Sellier, J. M.

Published
2006
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49. The many-body Wigner Monte Carlo method for time-dependent ab-initio quantum simulations.

Author

Sellier, J. M. and Dimov, I.

Subjects
*WIGNER distribution, *MONTE Carlo method, *TIME-dependent perturbation theory, *COMPUTER simulation, *QUANTUM mechanics, *GAUSSIAN processes
Abstract

The aim of ab-initio approaches is the simulation of many-body quantum systems from the first principles of quantum mechanics. These methods are traditionally based on the many-body Schrödinger equation which represents an incredible mathematical challenge. In this paper, we introduce the many-body Wigner Monte Carlo method in the context of distinguishable particles and in the absence of spin-dependent effects. Despite these restrictions, the method has several advantages. First of all, the Wigner formalism is intuitive, as it is based on the concept of a quasi-distribution function. Secondly, the Monte Carlo numerical approach allows scalability on parallel machines that is practically unachievable by means of other techniques based on finite difference or finite element methods. Finally, this method allows time-dependent ab-initio simulations of strongly correlated quantum systems. In order to validate our many-body Wigner Monte Carlo method, as a case study we simulate a relatively simple system consisting of two particles in several different situations. We first start from two non-interacting free Gaussian wave packets. We, then, proceed with the inclusion of an external potential barrier, and we conclude by simulating two entangled (i.e. correlated) particles. The results show how, in the case of negligible spin-dependent effects, the many-body Wigner Monte Carlo method provides an efficient and reliable tool to study the time-dependent evolution of quantum systems composed of distinguishable particles. [ABSTRACT FROM AUTHOR]

Published
2014
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