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Search Results: 1 - 10 of 326 matches for " Dmitriy Ognev "
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Viacheslav Prigozhin,Dmitriy Ognev
Sovremennye Issledovania Social?nyh Problem , 2012,
Abstract: The article deals with governance system improvement with public property in the course of innovation activity. The main governance principles with public property are picked out and innovation tendencies of governance system improvement with public property are determined.
Foundation of morals according to Windelband
Ognev A. I.
Kantovskij Sbornik , 2012,
Kant’s teaching about reality as understood and evaluated by Hartmann (prepared for publication, foreword by E. A. Butina, edited by N. A. Dmitrieva)
Ognev A. I.
Kantovskij Sbornik , 2012, DOI: 10.5922/0207-6918-2012-1-7
Kant’s teaching on schematism of concepts of pure understanding (prepared for pulication, supplied with comments by E. A. Butina)
Ognev A. I.
Kantovskij Sbornik , 2012, DOI: 10.5922/0207-6918-2012-2-8
Temperature bistability of charged dust particle in plasma
L. I. Ognev
Physics , 2006,
Abstract: By computer numerical simulation of heating of a dust conducting particle in homogeneous plasma it was shown that depending on initial temperature of a particle both heating and cooling were possible with formation of two different quasi-stable conditions - temperature bistability. The "hot" condition corresponds to positive charge of the particle and "cold" condition corresponds to negative charge. The stability of the "cold" state is provided by radiation losses. The method of experimental observation of the effect was proposed.
Optimization of compact Soller collimator
L. I. Ognev
Physics , 2008,
Abstract: The opportunity of optimization of collimator was investigated by changing collimator length, material and wall roughness for soft x-ray radiation with wavelength 4 nm corresponding to carbon atoms absorption. From the obtained results follows that effects of diffraction become significant for channel widths up to 0.02 - 0.04 mm. Collimation angle was limited to 0.014 and 0.007 radian for carbon dust detection. The choice of lighter material with greater height of roughness in shorter collimator with 2 reflections results in considerably lower losses than for heavier materials and smoother walls where 4 reflections required.
Wave channeling of X-rays in narrow rough capillaries - non Andronov-Leontovich theory
L. I. Ognev
Physics , 1998,
Abstract: The effect of capture of X-ray beam into narrow submicron capillary was investigated with account for diffraction and decay of coherency by roughness scattering in transitional boundary layer. In contrast to well-known Andronov-Leontovich approach the losses do not vanish at zero gliding angle and scale proportional to the first power of roughness amplitude for small gliding angles. It was shown that for small correlation radius of roughness the scattering decay of coherency can be made of the same order as absorption decay of lower channeling modes to produce angular collimation of X-ray beams. Estimates were given for optimum capillary length at different roughness amplitudes for angular sensitivity of X-ray transmission and chenneling effects that can be usefull for designing of detector systems.
Kinoform refraction lens with diffraction calculation
L. I. Ognev
Physics , 2004,
Abstract: By direct numerical simulations of the kinoform refractive lens within the quazioptical approach the effects of shape misalinement were investigated. The quazioptical approach was based on numerical integration of parabolic equation for complex wave amplitude by spep-by-step method with "splitting" procedure. The effect of 2pi- shift compensation was calculated for different orders and imperfections. The performance of kinoform lens was compared with the compound refractive lens and thin lens approximation.
Some Applications of Optimal Control in Sustainable Fishing in the Baltic Sea  [PDF]
Dmitriy Stukalin, Werner H. Schmidt
Applied Mathematics (AM) , 2011, DOI: 10.4236/am.2011.27115
Abstract: Issues related to the implementation of dynamic programming for optimal control of a three-dimensional dynamic model (the fish populations management problem) are presented. They belong to a class of models called Lotka-Volterra models. The existence of bionomic equilibria will be considered. The problem of optimal harvest policy is then solved for the control of various classes of its behaviour. Therefore the focus will be the optimality conditions by using the Bellman principle. Moreover, we consider a different form for the optimal value of the control vector, namely the feedback or closed-loop form of the control. Academic examples are studied in order to demonstrate the proposed methods.
On Roth's orthogonal function method in discrepancy theory
Dmitriy Bilyk
Uniform Distribution Theory , 2011,
Abstract: Motivated by the recent surge of activity on the subject, we present a brief non-technical survey of numerous classical and new results in discrepancy theory related to Roth's orthogonal function method.
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