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  • On Designing Time-Censored Step-Stress Life Test for the Burr Type-XII Distribution 
    Ismail, Ali A.; Al-Habardi, K. (Проблемы прочности, 2017)
    This article presents the optimal designing of time step-stress partially accelerated life test (PALT) under censored data from two-parameter Burr type-XII distribution. The maximum likelihood (ML) approach is used to ...
  • On determination of mean values of observed quantities according to O. Ya. Orlov 
    Tyshchuk, M.; Gozhy, A. (Кинематика и физика небесных тел, 2005)
    The definition of O.Ya.Orlov for mean values of observed quantities for any epoch suits for application not only in astronomy, and in geophysics, geodesy, meteorology. The method of seasonal decomposition and adjustment ...
  • On differentiability of solution to stochastic differential equation with fractional Brownian motion 
    Mishura, Yu.S.; Shevchenko, G.M. (2007)
    Stochastic differential equation with pathwise integral with respect to fractional Brownian motion is considered. For solution of such equation, under different conditions, the Malliavin differentiability is proved. Under ...
  • On differential preradicals 
    Horbachuk, O.; Komarnytskyi, M.; Maturin, Y. (Algebra and Discrete Mathematics, 2007)
    Differential preradicals and differential preradical filters are considered. Differentially closed fields are investigated.
  • On dimension of product of groups 
    Dranishnikov, A. (Algebra and Discrete Mathematics, 2019)
    We prove the product formula cd(Г×Г) = 2 cd Г for cohomological dimension of geometrically finite groups.
  • On directional monogeneity sets 
    Diab, F.M. (Український математичний журнал, 1997)
    We introduce and investigate some new differential properties of functions by using geometrical properties of directional monogeneity sets.
  • On disjoint union of M-graphs 
    Kozerenko, S. (Algebra and Discrete Mathematics, 2017)
    Given a pair (X,σ) consisting of a finite tree X and its vertex self-map σ one can construct the corresponding Markov graph Γ(X,σ) which is a digraph that encodes σ-covering relation between edges in X. M-graphs are Markov ...
  • On dispersing representations of quivers and their connection with representations of bundles of semichains 
    Bondarenko, V.M. (Algebra and Discrete Mathematics, 2002)
    In the paper we discuss the notion of “dispersing representation of a quiver” and give, in a natural special case, a criterion for the problem of classifying such representations to be tame. In proving the criterion we ...
  • On dispersion relation of slow circularly polarized electromagnetic waves in plasmas 
    Gospodchikov, E.D.; Suvorov, E.V. (Вопросы атомной науки и техники, 2013)
    In the present communication, Hamilton equations for electrons interacting with slow circular polarized electromagnetic wave are solved in a self-consistent way. Basing on these solutions the interaction between the fast ...
  • On dissociation in weakly doped ice 
    Chikina, I.; Shikin, V. (Физика низких температур, 2015)
    Currently, there is some ambiguity in the problem of decay of a single donor into charged fragments. Thus, in the well-known Ostwald approximation used for semiconductors (ice being one of them) the donor dissociation degree ...
  • On divergence and sums of derivations 
    Chapovsky, E.; Shevchyk, O. (Algebra and Discrete Mathematics, 2017)
    Let K be an algebraically closed field of characteristic zero and A a field of algebraic functions in n variables over K. (i.e. A is a finite dimensional algebraic extension of the field K(x1,…,xn) ). If D is a K-derivation ...
  • On division rings with general involution 
    Idris, I.M. (Algebra and Discrete Mathematics, 2007)
    In this work we consider division rings with general involution. Properties of such division rings are investigated. General valuation of such division rings is introduced. We extend to this general notion some result ...
  • On domination of nonlinear wave interaction in the energy balance of wind-driven sea 
    Zakharov, V.E. (Физика низких температур, 2010)
    Here some aspects of the physics of wind-driven sea are investigated theoretically. It is demonstrated that the effective four-wave nonlinear interaction plays the leading role in the formation of the spectra of turbulent ...
  • On dual Rickart modules and weak dual Rickart modules 
    Keskin Tütüncü, D.; Orhan Ertas, N.; Tribak, R. (Algebra and Discrete Mathematics, 2018)
    Let R be a ring. A right R-module M is called d-Rickart if for every endomorphism φ of M, φ(M) is a direct summand of M and it is called wd-Rickart if for every nonzero endomorphism φ of M, φ(M) contains a nonzero direct ...
  • One-beam dynamic ion mixing applied to coat elements onto sophistically shaped objects 
    Boyko, E.B.; Komarov, F.F.; Jukowski, P.; Karwat, C.; Kolasik, M.; Kozak, C. (Физическая инженерия поверхности, 2007)
    Recently suggested single-ion-beam setup for ion-beam assisted deposition (IBAD) of layers with various composition including the sputter target in a form of hollow truncated cone made of the material to be deposited ...
  • One branch curve singularities with at most 2-parameter families of ideals 
    Drozd, Yu.A.; Skuratovskii, R.V. (Algebra and Discrete Mathematics, 2012)
    A criterion is given in order that the ideals of a one branch curve singularity form at most 2-parameter families. Namely, we present a list of plane curve singularities from the Arnold's classification which are the ...
  • One class of multidimensional stochastic differential equations having no property of weak uniqueness of a solution 
    Aryasova, O.V.; Portenko, M.I. (2005)
    A class of stochastic differential equations in a multidimensional Euclidean space such that the property of a solution to be unique (in a weak sense) fails for it is considered. We present the correct formulation of the ...
  • One class of semilinear Sobolev type equations and phase spaces 
    Sviridyuk, G.A. (Нелинейные граничные задачи, 2004)
    The solvability of the Cauchy problem u(0) = u₀ of an semilinear differential operator equation Lû = Mu + N(u) is under consideration. The abstract results are illustrated by the Cauchy - Dirichlet problem for the Hoff ...