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Browsing PhD theses : Science by Title
Now showing items 232-251 of 515
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(Sudan University of Science and Technology, 2015-08-10)We give the eigenvalue estimate , a variational analysis , multiple solutions with stability and instability of Einstien-scalar field Lichnerowicz equations on compact Riemannian manifolds. We construct a minimization ...
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(Sudan University of Science and Technology, 2019-07-10)The given improvement and critical with Sharp trace and fractional Hardy-Sobolev inequalities are studied. We also study affine and best constants Moser-Trudinger and higher order Sobolev inequalities on high dimensional ...
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(Sudan University of Science and Technology, 2018-02-10)We study the spectral properties and complemented invariant subspaces in the Bergman spaces having the codimension two property and also with the spectra of some translation and fiber dimension for invariant subspaces. We ...
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(Sudan University of Science and Technology, 2016-06-10)We classify the functional model for dissipative and calculus for a pair of almost commuting selfadjoint operators. We find the estimates in operator class for a difference of function from the pick class of accretive ...
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(Sudan University of Science and Technology, 2009-10-01)We show a -Theorem for non-doubling measures and for the Cauchy integral. We study the elementary theorem of Paley- Wiener for the Dunkl transforms and the characterization of Besov spaces for the Dunkl operator on the ...
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(Sudan university of Science and Technology, 2010-01-01)We show the essential norm of composition and weighted composition operators on the Hardy space and between ∝-Bloch space and β-Bloch space in polydiscs. We characterize the adjoint of a composition operator and show the ...
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(Sudan University of Science and Technology, 2010-01-01)We study some extensions of Loewner's theory of monotone operator functions. We diagonalize operators with reflection symmetry, that is we provide an operator theoretic model of a given structure of pure shift of infinite ...
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(Sudan University of Science and Technology, 2016-07-10)We give a cohomology of the complement of a free divisor and the computation of the logarithmic cohomology of the complement of a plane curve and for plane curves.The pattern-equivariant and comparing different versions ...
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(Sudan University of Science and Technology, 2008-01-10)Over the last decade the logistic regression model has become, in many fields the standard method of analysis of data concerned with describing the relationship between a binary variable and one or more explanatory variables. ...
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(Sudan University of Science and Technology, 2015-08-01)We study the Lyapunov inequalities for the time scales, for discrete linear Hamiltonian systems on the time scales. We show the strong instability and stability standing waves for nonlinear Klein – Gordon eqations ...
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(Sudan University of Science and Technology, 2016-08-10)Mass and charge generation mechanisms are one of the challenging problems in field theories. The mass generation cannot be a achieved by Higgs mechanisms, according to generalized special relativity, as far as masses depend ...
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(Sudan University of Science and Technology, 2020-03-22)Mathematical control theory is a branch of mathematics having as one of its main aims the establishment of a sound mathematical foundation for the control techniques employed in several different fields of applications ...
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(Sudan University of Science and Technology, 2018-11-22)We study the measurability and integrability of the weak upper limit of a sequence of multifunctions .The Pettis integral and measurability with selections of multifunctions in Banach spaces was shown.The largest class ...
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(Sudan University of Science and Technology, 2011-08-01)This research aim to study Measurements of Ultrasound Velocity , Acoustic impedance and Temperature in Water and Sheep Blood . There were three experiments made in international African University, Sudan University of ...
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(Sudan University of Science and Technology, 2019-05-01)The focus of our study is the measurement of radiation doses and risk assessment during interventional cardiac procedures. When X-rays are used to depict the arteries and veins of the heart for the safety of diagnosis and ...
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(Sudan University of Science & Technology, 2010-08-01)We study the composition operators and some interpolation problems for analytic functions on Hilbert spaces. We show a refinement of the von Neumann double commutant theorem. We describe the spectrum of the composition ...
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(Sudan University of Science and Technology, 2018-02-10)Biodiesel produced from Jatropha curcus L fixed oil by trans-esterification process represents one of the most alternative fuel options to replace depleting fossil fuels. Physico-chemical parameters such as density, ...
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(Sudan University of Science and Technology, 2019-01-23)Moringa oleifera Lam. tree grows in many tropical and subtropical countries. The seed, leaves, root and flowers of M. oleifera are often used in traditional medicine, while the immature pods, leaves and seed are used as ...
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(Sudan University of Science and Technology, 2015-08-10)Identification of elements is very important in mineral exploration. The change of conductivity with frequency shows resonance values for different matter. At these values the conductivity is minimum; this resonance frequency ...
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(Sudan University of Science and Technology, 2008-08-01)The study has focused on the HIV/AIDS in Khartoum state during the period (2003-2007). Its main objective was to study the situation of HIV/AIDS in Khartoum state through a sample of 1439 of volunteers for the three selected ...
Now showing items 232-251 of 515
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