Thesis

Cyclic Phenomena for Composition Operators

Let H(U) be the set of all holomorphic functions on the unit ball U of the complex plane. The Hardy space H2 is the set of all functions f(z)= that belongs to H(U) such that  < ¥. Let j be a holomorphic self map of U. The composition operator Cj on H2 is defined as follows:

Cjf = foj, for all f Î H2

English

About the solutions of Lypuonov Equations

The main purpose of this work can be divided in to three aspects.First, a study of the existence and uniqueness of the solution for special types of linear operator equations, namely the Lyapunov equation.

Second, a discussion of the range for the quaii-Jordan*-derivation.Third, some special types of Lyapunov equation, namely stein equation.

English

Solvability and Controllability of Semilinear Initial Value Control Problem Via Semigroup Approach

The aim of this thesis is to prove the existence and uniqueness of the mild solutions of semilinear initial value control problems in a suitable Banach spaces as well as their controllability. Some theorems regarding controllability, local and global existence as well as uniqueness of the mild solution in infinite dimensional spaces have been developed in suitable Banach space using the Schauder fixed point theorem and the semigroup theory (compact semigroup).

English

A Novel Approach for Deriving Some Runge-Kutta Methods

 

The objective of this thesis studying and deriving with some modification as a new approach of Runge-Kutta method including explicit, semi-explicit and implicit methods as well as studying stability of convergence of these methods.Also, one of most important themes of the thesis is to introduce variable step size and variable order methods using an extrapolation method which has the utility of controlling the local truncation error to be less than a prespecified tolerance error.

English

NUMERICAL STUDY OF TEMPERATURE PROFILE FOR FINNED PLATE WITH DIFFERENT BOUNDARY CONDITIONS

The present study has been carried out to investigate numerical study of temperature profile for finned plate with different boundary conditions. For many practical heat transfer problems it is not possible to obtain a solution by means of analytical techniques. Instead, Solving them requires the use of numerical methods, which in many cases allow such problems to be solved quickly.
English

المسؤولية الجنائية الناشئة عن التصوير الخفي " دراسة مقارنة "

يقصد بالمصلحة المعتبرة كل مصلحة أعتبرها المشرع من المصالح المهمة التي يجب حمايتها بنصوص  قانونية ,على أن تحديد المصلحة المحمية في كل نص يلعب دورا رئيسيا في تحديد نطاق التجريم والغرض منه , مما يساعد ذلك في حل وتكييف جميع المسائل المتنازع عليها من حيث التكيف القانوني الصحيح المناسب لكل منها تنقسم المصلحة المعتبرة إلى قسمين مصلحة عامة تتعلق بأمن الدولة (الداخلي و الخارجي) ومصلحة خاصة تتعلق بخصوصيات الإفراد , وقد كفل المشرع حماية المصلحة العامة من إي إعتداء يكدرها (2) إما عن المصلحة الخاصة فلم يدعوها  المشرع  العراقي للانضمام  إلى نصوص قانون ال

Arabic

STUDY OF TUBE REDUCTION USING DIE-LESS DRAWING

A study of die-less tube sinking is carried out in which the conventional reduction die is replaced by a die-less stepped bore reduction unit (DRU). The DRU is a single cylinder of two concentric bores with different diameters, where the smallest bore diameter is slightly greater than the outer tube diameter before deformation.
Arabic

DESIGN STUDY OF VORTICAL SOLAR CHIMNEY POWER PLANT

This work is concerned with improving a solar chimney power plant that was studied before this development involve, new chimney tower for the power plant which generates confined vortex of air system. The vortex will cause air pressure to decrease inside the chimney tower and leads to an increase in the amount of airflow from the solar collector and the vanes of the generation vortex system.
English

Study of the C.O.P. of steam jet refrigeration unit as compared to vapor compression unit

The present study has been carried out to investigate the performance of the steam jet refrigeration system at various operating conditions, and to compare the C.O.P. results with that of Absorption system.
English

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