112,422 research outputs found
Superimposed Codes and Threshold Group Testing
No full textD'yachkov A, Rykov V, Deppe C, Lebedev V. Superimposed Codes and Threshold Group Testing. 2014.We will discuss superimposed codes and non-adaptive group testing designsarising from the potentialities of compressed genotyping models in molecularbiology. The given paper was motivated by the 30th anniversary ofD'yachkov-Rykov recurrent upper bound on the rate of superimposed codespublished in 1982. We were also inspired by recent results obtained fornon-adaptive threshold group testing which develop the theory of superimposedcode
Conservative numerical methods for model kinetic equations
No full textA new conservative discrete ordinate method for nonlinear model kinetic equations is proposed. The conservation property with respect to the collision integral is achieved by satisfying at the discrete level approximation conditions used in deriving the model collision integrals. Additionally to the conservation property, the method ensures the correct approximation of the heat fluxes. Numerical examples of flows with large gradients are provided for the Shakhov and Rykov model kinetic equations
Reliability and sensitivity analysis of a repairable k-out-of-n:F system with general life-and repair times distribution
No full textThe study of a k-out-of-n system's reliability is interesting both from theoretical and practical points of view. There are many investigations devoted to reliability centric analysis of a k-out-of-n:F systems, i.e., systems consisting of n components which are operable while at least k of system's components are functioning Shepherd (2008). Another problem deals with the previous issue is the sensitivity of k-out-of-n system reliability characteristics to the shape of their elements’ life and repair times distribution Sevast’yanov (1957). In some previous works, closed-form representations for reliability characteristics of redundant systems with an exponential distribution of their elements lifetime and general distribution of their repair time have been found in Rykov (2018), Rykov et al. (2020). Such results show systems' asymptotic insensitivity to the shape of repair time distributions. In the recent paper the analytical model of a k-out-of-n:F system in the case of exponential distribution of their elements lifetime and a general repair time distribution is considered using the supplementary variables method (also called as the markovization method) Cox (1955) as well as sensitivity analysis of some reliability characteristics of such a system for the general distributions of life-and repair times is carried out with the help of simulation modeling. Numerical analysis is performed on the example of the 3-out-of-6:F system. © ESREL2020-PSAM15 Organizers. Published by Research Publishing, Singapore
On sensitivity of steady-state probabilities of a cold redundant system to the shapes of life and repair time distributions of its elements
No full textThe problem of sensitivity of a redundant system’s reliability characteristics to shapes of their input distributions is considered. In Efrosinin and Rykov, Information Technologies and Mathematical Modelling, 2014, [1] an analytical form for dependence of a two-unit cold standby redundant system reliability characteristics on life and repair time input distributions was obtained and investigated for the case of exponential distribution of one of the time lengths. In the current chapter this study is extended with the help of simulation method to a general case of both non-exponential distributions. Comparison of analytic and simulation results was carried out. © Springer International Publishing AG, part of Springer Nature 2018
On sensitivity of steady-state probabilities of a cold redundant system to the shapes of life and repair time distributions of its elements
No full textThe problem of sensitivity of a redundant system’s reliability characteristics to shapes of their input distributions is considered. In Efrosinin and Rykov, Information Technologies and Mathematical Modelling, 2014, [1] an analytical form for dependence of a two-unit cold standby redundant system reliability characteristics on life and repair time input distributions was obtained and investigated for the case of exponential distribution of one of the time lengths. In the current chapter this study is extended with the help of simulation method to a general case of both non-exponential distributions. Comparison of analytic and simulation results was carried out. © Springer International Publishing AG, part of Springer Nature 2018
Plasma Physics Reports V. 31, I. 07
No full textleave(s) : ill; 28 cm.Plasma Physics Reports -- July 2005
Volume 31, Issue 7, pp. 529-620
TOKAMAKS
Self-Organization of Plasma in Tokamaks
Yu. N. Dnestrovskij, A. Yu. Dnestrovskij, and S. E. Lysenko
pp. 529-553 Full Text: PDF (270 kB)
STELLARATORS
The Use of Doppler Reflectometry in the L-2M Stellarator
A. A. Pshenichnikov, L. V. Kolik, N. I. Malykh, A. E. Petrov, M. A. Tereshchenko, N. K. Kharchev, and Yu. V. Khol'nov
pp. 554-561 Full Text: PDF (113 kB)
DUSTY PLASMA
Formation of Quasi-Two-Dimensional Dust Structures in an External Electric Field
O. S. Vaulina, K. G. Adamovich, and I. E. Dranzhevskii
pp. 562-569 Full Text: PDF (135 kB)
Vortex Dust Structures in the Track Plasma of a Proton Beam
V. E. Fortov, V. A. Rykov, V. S. Filinov, V. I. Vladimirov, L. V. Deputatova, O. F. Petrov, V. I. Molotkov, A. P. Budnik, P. P. D'yachenko, K. V. Rykov, and A. V. Khudyakov
pp. 570-576 Full Text: PDF (211 kB)
NONLINEAR PHENOMENA
Equations for Nonlinear MHD Convection in Shearless Magnetic Systems
V. P. Pastukhov
pp. 577-590 Full Text: PDF (155 kB)
PLASMA DYNAMICS
A Simple Criterion for the Snowplowing Efficiency of the Working Gas in a kJ Plasma Focus
V. Ya. Nikulin, S. N. Polukhin, and A. A. Tikhomirov
pp. 591-595 Full Text: PDF (239 kB)
PLASMA OSCILLATIONS AND WAVES
On the Dispersion Properties of Waveguides Filled with a Magnetized Plasma
G. I. Zaginaylov, V. I. Shcherbinin, and K. Shuenemann
pp. 596-603 Full Text: PDF (112 kB)
Some Properties of the Angular Power Distribution of Electromagnetic Waves Multiply Scattered in a Collisional Magnetized Turbulent Plasma
V. G. Gavrilenko, A. V. Sorokin, G. V. Jandieri, and V. G. Jandieri
pp. 604-615 Full Text: PDF (177 kB)
LOW-TEMPERATURE PLASMA
The Properties of High-Current High-Pressure Discharges
�. A. Azizov, S. A. Kravchenko, and S. G. Solodovnikov
pp. 616-620 Full Text: PDF (64 kB)The content contained herein is maintained and curated by the Preservation Department.This record is revised and maintained by the content administrators from the Cataloging & Metadata Department
Doklady Physics V. 49, I. 09
No full textDoklady Physics -- September 2004
Volume 49, Issue 9, pp. 491-547
PHYSICS
Bragg Reflection as a Mechanism of Light Localization in One-Dimensional Systems
A. P. Vinogradov and A. M. Merzlikin
pp. 491-493 Full Text: PDF (49 kB)
Mechanism of the Appearance of Ball Lightning from Usual Lightning
V. P. Torchigin
pp. 494-496 Full Text: PDF (39 kB)
Dust Particles in a Track Plasma Produced by a Proton Beam
V. E. Fortov, V. A. Rykov, V. I. Vladimirov, L. V. Deputatova, V. I. Molotkov, O. F. Petrov, V. S. Filinov, A. P. Budnik, P. P. D'yachenko, K. V. Rykov, and A. V. Khudyakov
pp. 497-500 Full Text: PDF (227 kB)
Statistical Laws of Macroprocesses: Random Walks in the Momentum Space
G. S. Golitsyn
pp. 501-504 Full Text: PDF (48 kB)
Suppression of Toroidal Alfvén Eigenmodes by the Density Gradient of Hot Ions in Tokamaks
A. B. Mikhailovskii, M. S. Shirokov, S. V. Konovalov, and V. S. Tsypin
pp. 505-507 Full Text: PDF (53 kB)
Self-Consistent Description of Charged-Particle Flux Catastrophes
N. D. Naumov
pp. 508-511 Full Text: PDF (53 kB)
Optical-Radiation Power Limiting in High-Scattering Media
S. A. Tereshchenko and V. M. Podgaetskii
pp. 512-515 Full Text: PDF (59 kB)
An Effect of Defects in Nonmetallic Sublattice on Properties of Titanium Carbide
A. V. Elyutin, A. V. Manukhin, G. A. Kupreeva, and P. B. Lopatin
pp. 516-518 Full Text: PDF (33 kB)
TECHNICAL PHYSICS
The Use of Severe Deformations for Preparing Bulk Nanocrystalline Materials from Amorphous Alloys
R. Z. Valiev, V. G. Pushin, D. V. Gunderov, and A. G. Popov
pp. 519-521 Full Text: PDF (249 kB)
MECHANICS
Bifurcations under Perturbations Violating Cosymmetry
V. I. Yudovich
pp. 522-526 Full Text: PDF (70 kB)
Flight Overloading Effect on the Working-Process Instability in the Combustion Chamber of a Solid-Fuel Rocket Engine
Yu. M. Davydov, I. M. Davydova, and M. Yu. Egorov
pp. 527-529 Full Text: PDF (48 kB)
On the Optimal Structure of the Arterial Wall
S. N. Bagaev, V. N. Zakharov, A. L. Markel, A. E. Medvedev, V. A. Orlov, V. I. Samsonov, and V. M. Fomin
pp. 530-533 Full Text: PDF (123 kB)
An Approach to Solving the Problems on Interaction between Elastic Bodies in the Presence of Adhesion
I. G. Goryacheva and Yu. Yu. Makhovskaya
pp. 534-538 Full Text: PDF (73 kB)
On Particle's Trajectories of Moon-to-Earth Space Flights with the Gravitational Escape from the Lunar Attraction
V. V. Ivashkin
pp. 539-542 Full Text: PDF (58 kB)
A Model of the Helical Pulsed Flow of Blood in Arteries
Yu. A. Ustinov
pp. 543-547 Full Text: PDF (61 kB)Archived web conten
author-bios-SRD-19-0063.R1 – Supplemental material for The Network Structure of Police Misconduct
No full textSupplemental material, author-bios-SRD-19-0063.R1 for The Network Structure of Police Misconduct by George Wood, Daria Roithmayr and Andrew V. Papachristos in Socius</p
Superimposed Codes and Threshold Group Testing
No full textD’yachkov A, Rykov V, Deppe C, Lebedev V. Superimposed Codes and Threshold Group Testing. In: Aydinian H, Cicalese F, Deppe C, eds. Information Theory, Combinatorics, and Search Theory. Lecture Notes in Computer Science. Vol 7777. Berlin, Heidelberg: Springer Berlin Heidelberg; 2013: 509-533
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
- …
