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Search Results: 1 - 10 of 50567 matches for " Y. Nikitenko "
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Estimation of the directional parameter of the offset exponential and normal distributions in three-dimensional space using the sample mean
Yaroslav Nikitenko
Statistics , 2015,
Abstract: The directional precision of the sample mean estimator was calculated analytically for the offset exponential and normal distributions in three-dimensional space both for a finite sample and for limiting cases. It was shown that the spherical projection of the sample mean of the shifted exponential distribution has connections with modified Bessel functions and with hypergeometric functions. It was shown explicitly how the distribution of the sample mean of the exponential pdf converges near the mode to the normal distribution. Approximation formulae for the distribution of the sample mean of the shifted exponential distribution and for its directional precision and for the precision of the estimation of the direction of shift of the normal distribution were obtained.
Oscillating magnetic induction defined by neutron reflection
Yu. V. Nikitenko
Physics , 2010,
Abstract: The expressions are received for neutron reflection from the wave resonator placed in an oscillating magnetic field. The conditions are defined for optimal values of the neutron wave resonator and magnetic field parameters. Numerical calculations which support theory conclusions are carried out for real systems.
Electrodeposition of Palladium Coatings from Iminodiacetate Electrolyte  [PDF]
Valeriy S. Kublanovsky, Vasiliy N. Nikitenko, Kostiantyn P. Rudenko
American Journal of Analytical Chemistry (AJAC) , 2013, DOI: 10.4236/ajac.2013.411076
Abstract: The ionic composition of an iminodiacetate electrolyte as a function of solution composition and pH has been deter-mined. The kinetic parameters (exchange currents and apparent transfer coefficients) of the electroreduction of a palla-dium(II) bis-iminodiacetate complex from an electrolyte containing excess ligand have been calculated. It has been shown that the rate of the electrode process is controlled by the diffusion of reduced ions to the electrode surface and by the electron-transfer reaction. The possibility of using iminodiacetate electrolyte for palladium plating for the deposition of fine-crystalline adherent and ductile palladium coatings has been examined.
Monte Carlo study of gg->H+jets contribution to Vector Boson Fusion Higgs production at the LHC
Acosta, M. V.;Nikitenko, A.
High Energy Physics - Phenomenology , 2007,
Abstract: The contribution of gg->H+jets production process to the vector boson fusion production of the Higgs boson, VV->H, at LHC was evaluated with the ALPGEN generator and the PYTHIA shower Monte Carlo including a jet-parton matching procedure. After the experimental like event selections applied at PYTHIA particle level, the contribution was found to be 4-5 % for a Higgs boson mass of 120 GeV.
Discovery Reach of Charged MSSM Higgs Bosons at CMS
Heinemeyer, S.;Nikitenko, A.;Weiglein, G.
High Energy Physics - Phenomenology , 2008, DOI: 10.1063/1.3051909
Abstract: We review the 5 sigma discovery contours for the charged MSSM Higgs boson at the CMS experiment with 30/fb for the two cases M_H+ < m_t and M_H+ > m_t. In order to analyze the search reach we combine the latest results for the CMS experimental sensitivities based on full simulation studies with state-of-the-art theoretical predictions of MSSM Higgs-boson production and decay properties. Special emphasis is put on the SUSY parameter dependence of the 5 sigma contours. The variation of $\mu$ can shift the prospective discovery reach in tan_beta by up to Delta tan_beta = 40.
Heavy MSSM Higgs Bosons at CMS: "LHC wedge" and Higgs-Mass Precision
Heinemeyer, S.;Nikitenko, A.;Weiglein, G.
High Energy Physics - Phenomenology , 2007, DOI: 10.1088/1742-6596/110/7/072047
Abstract: The search for MSSM Higgs bosons will be an important goal at the LHC. In order to analyze the search reach of the CMS experiment for the heavy neutral MSSM Higgs bosons, we combine the latest results for the CMS experimental sensitivities based on full simulation studies with state-of-the-art theoretical predictions of MSSM Higgs-boson properties. The experimental analyses are done assuming an integrated luminosity of 30 or 60 fb^-1. The results are interpreted as 5$ \si$ discovery contours in MSSM M_A-tan_beta benchmark scenarios. Special emphasis is put on the variation of the Higgs mixing parameter mu. While the variation of mu can shift the prospective discovery reach (and correspondingly the ``LHC wedge'' region) by about Delta tan_beta= 10, the discovery reach is rather stable with respect to the impact of other supersymmetric parameters. Within the discovery region we analyze the accuracy with which the masses of the heavy neutral Higgs bosons can be determined. An accuracy of 1-4% should be achievable, depending on M_A and tan_beta.
Charged MSSM Higgs Bosons at CMS: Reach and Parameter Dependence
Heinemeyer, S.;Nikitenko, A.;Weiglein, G.
High Energy Physics - Phenomenology , 2008,
Abstract: We review the analysis of the 5 sigma discovery contours for the charged MSSM Higgs boson at the CMS experiment with 30 fb^-1 for the two cases M_H+ < m_t and M_H+ > m_t. Latest results for the CMS experimental sensitivities based on full simulation studies are combined with state-of-the-art theoretical predictions of MSSM Higgs-boson production and decay properties. Special focus is put on the SUSY parameter dependence of the 5 sigma contours. The variation of mu can shift the prospective discovery reach in tan_beta by up to Delta tan_beta = 40. We furthermore discuss various theory uncertainties on the signal cross section and branching ratio calculations. In order to arrive at a reliable interpretation of a signal of the charged MSSM Higgs boson at the LHC a strong reduction in the relevant theory uncertainties will be necessary.
THE INVESTIGATION OF THE TECHNOLOGY OF THE DRAIN PIPES FORCE-PACKAGE WITH THE VOLUME-FILTER MATERIAL IN CONSTRUCTING BURIED HORIZONTAL DRAINAGE Исследование технологии принудительной обсыпки дренажных труб объёмно-фильтрующим материалом при строительстве закрытого горизонтального дренажа
Nikitenko A. V.,Maximov V. P.
Polythematic Online Scientific Journal of Kuban State Agrarian University , 2013,
Abstract: The technology of the close subsurface drainage construction with using the force-feed of the volume-filter material by the narrow-trench drainage machine bin is described in the article. The results of the field study of the drains laid by traditional and proposed technology efficiency are shown
Applicability of White-Balancing Algorithms to Restoring Faded Colour Slides: An Empirical Evaluation
Denis Nikitenko,Michael Wirth,Kataline Trudel
Journal of Multimedia , 2008, DOI: 10.4304/jmm.3.5.9-18
Abstract: In this paper we investigated the applicability of commonly used white-balancing algorithms to restoring faded photographic colour slides. We have used three sets of synthetic data that simulated colour damage in Kodak Ektachrome slides, as well as three sets of real digitized faded Kodak Ektachrome slides. We have restored all the data sets using nine different algorithms and evaluated restoration results using human participants. In addition, we have conducted an evaluation of the restored synthetic data using a distance metric .We found that while some algorithms provided acceptable restoration of synthetic images, none were found by the human participants to adequately restore real-world data. In addition, we found no correlation between human-based and metric-based evaluation results on 2 out of 3 synthetic data sets. Our results form a strong indication that commonly used white-balancing methods are inadequate for restoring faded colour slides and that simple colour distance metrics do not necessarily correspond to human perception of colour quality.
Effective Electromagnetic Log Data Interpretation in Realistic Reservoir Models  [PDF]
M. Epov, C. Suhorukova, V. Glinskikh, M. Nikitenko, O. Nechaev, I. Surodina
Open Journal of Geology (OJG) , 2013, DOI: 10.4236/ojg.2013.32B017
Abstract:

This paper analyzes some specific features of the numerical interpretation of high-frequency electromagnetic logging data in vertical, deviated and horizontal boreholes entering oil- and water-saturated formations. The interpretation is based on numerical modeling for signals.

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