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PhD theses : Science: Recent submissions
Now showing items 581-600 of 647
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(Sudan University of Science and Technology, 2009-07-01)We show the sum rules and their applications of special form for Jacobi matrices, and the spectral properties of self-adjoint extensions of Weyl functions are considered. The representation and Jordan form of biquasitriangular ...
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(Sudan University of Science and Technology, 2009-09-01)We give remarks on the construction of linear evolution equations. Logarithms and some examples of unbounded imaginary powers of operators are considered, and we determined the best constants in Young's inequality ...
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(Sudan University of Science and Technology, 2009-08-01)The fundamental equivalence problems are to determine whether two exterior differential systems can be transformed into each other by a suitable change of variables. The symmetry group of a geometric object can be regarded ...
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(Sudan University of Science and Technology, 2009-07-01)We used exterior algebra to study partial differential equations geometrically, and explained how to rephrase any system of partial differential equations as an exterior differential system (EDS). Our strategy is to ...
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(Sudan University of Science and Technology, 2009-01-01)The control theory and dynamical systems have been developed rapidly and they playing an ever more important role in linear and non-linear sciences and many applied fields during the past three decades . A lot of papers ...
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(Sudan University of Science and Technology, 2009-10-01)The main objective of this work was to develop a rapid and precise Spectrophotometric method to determine manganese content in manganese ores to replace the slow and tedious conventional methods. Ten Sudanese manganese ...
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(Sudan University of Science and Technology, 2010-08-01)we study the behavior of the weak- type weights and the normability of the Lorentz spaces. The embeddings between classical Lorentz spaces are considered. We show some generalizations of Orlicz- Lorentz spaces and the ...
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(جامعة السودان للعلوم والتكنولوجيا, 2010-01-01)تبحث الدراسة في توضيح قياس المؤشرات الاجتماعية وكيف نضمن قياسا صحيحا وسليما مبنى على أسس علمية وبيانات صحيحة كما اعتمدت الدراسة على بيانات تعداد 1993م ونتائج تقارير الامم المتحدة وقد استخدمت في هذه الدراسة أساليب قياس ...
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(جامعة السودان للعلوم والتكنولوجيا, 2010-07-01)عند تحليل البيانات الثنائية Binary data - وهي البيانات التي يأخذ فيها المتغير التابع Y إحدى القيمتين صفر أو واحد – فانه يفضل استخدام أسلوب تحليل الانحدار اللوجستي والذي من خلاله يمكن توفيق واختبار العلاقة بين المتغير ...
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(جامعة السودان للعلوم والتكنولوجيا, 2010-07-01)تناول هذا البحث دراسة العمليات التصادفية التي لها الكثير من التطبيقات في العديد من المجالات و احتوى الإطار النظري لهذا البحث على تناول عملية بواسون بحالاته المختلفة الحالة المتجانسة والحالة غير المتجانسة وعملية بواسون ...
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(جامعة السودان للعلوم والتكنولوجيا, 2010-01-01)حضرت أغشية (SnO2) وأغشية (SnO2) المشوبة بالأنتمون وبنسب تشويب (%9-1) على قواعد من زجاج السلايد باستخدام تقنية التحلل الكيميائي الحراري وكان سمك الأغشية المحضرة بحدود 0.5 مايكرون. تم دراسة الخصائص التركيبية باستخدام تقنية ...
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(Sudan University of Science and Technology, 2010-03-01)We study the basics of holomorphic function spaces , and their holomorphically equivalent Segal-Bargmann spaces . We also consider the canonical commutation relations to derive the Segal – Bargmann transform and invstigate ...
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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, 2010-09-01)Mobile phone radiation and health concerns have been raised, especially following the enormous increase in the use of wireless mobile telephony throughout the world [update. Mobile phones use electromagnetic radiation in ...
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(Sudan University of Science and Technology, 2010-01-01)This research aimed at building of logistic regression model for the incidence Sudanese females by breast cancer with reference to Khartoum state, Sudan, using logistic regression method, so as to study breast cancer ...
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(Sudan University of Science and Technology, 2010-01-01)We study the - estimates for certain kernels on Hilbert space , Schatten – von Neumann classes and the homogenous Besov- spaces . We introduce the sharp maximal Function on spaces of generalized homogenous type . We verified ...
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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 & Technology, 2010-06-01)Superconductivity is one of the most important phenomena in solid state physics. Its theoretical framework at low critical temperature is based on Bardeen, Cooper and Schrieffer theory (BCS). But at high above 135, this ...
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(Sudan University of Science & Technology, 2010-01-01)Some recent experiments shows that the photon has a rest mass. Special relativity says that the photon is rest massless which is in conflict with some recent observations and the common sense. There is also no well defined ...
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Fourier Fractal Measures and Weak*- Integrals of Operators and an Inequality for Unbounded Domains (Sudan University of Science & Technology, 2010-04-01)We study the fractal theory and self- similar fractals in noncommutative geometry .We construct the Fredholm modules on post critically finite self –similar fractals and their conformal geometry . We investigate the norm ...
Now showing items 581-600 of 647
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