احصاء - ماجستير
Permanent URI for this collectionhttps://repository.neelain.edu.sd/handle/123456789/624
Browse
108 results
Search Results
Item Representation Theory of Finite Group with Some Applications(AL-Neelain University, 16) Hiba NasrEldin MohamedThis research aims to study the representation theory as a tool that transform abstract groups to groups of linear transformations easy to deal with. This research depends on groups and fields theory and vector spaces to construct the structure of these spaces. We studied vector spaces because of structures. In particular we dealt with finite groups and we gave some applications.Item SPINORS AND LIE ALGEBRAS WITH APPLICATIONS TO PHYSICAL FIELDS ALNEELAIN UNIVERSITY(جامعة النيلين, 2018) Reem Abdalgadir AbdallaAbstract The purpose of this research is to introduce concept of Lie group and Lie algebra in addition to some theories and examples. Well as some applications on Lie algebra In particular we are concerned with physical applications; we studied elements of particle physics and gravity. We utilized symmetry concepts, in terms of Lie algebra, in order to classify elementary particles. We also used the symmetry properties to study the unifications problem. المستخلص كان القصد من هذا البحث اعطاء مقدمة عن مفهوم الـ (Lie algebra) بالإضافة الى بعض الأمثلة و النظريات ,و تطبيق عمليات الـ (Lie algebra) و بالأخص العمليات الفيزيائية . كذلك درسنا الجزيئات الأولية و الجاذبية , و استخدمنا مفهوم التشابه بواسطة الـ (Lie algebra) و نفنا الجزيئات الأولية , و أستخدمنا خصائص التشابه بدراسة مشكلة التوحيد .Item Mathematical Analysis of a Model for Tuberculosis Transmission Under Treatment and Quarantine(Neelain University, 2018) Samira Abdalaziz Hamid FadulAbstract In this study, historical remarks about Tuberculosis epidemic disease, treatment strategies with quarantine has been briefly outlined. We studied two models for Tuberculosis with different treatment strategies with and without quarantine. We presented conditions for positivity and boundedness of solutions for both models. Furthermore, we proved the existence of disease-free equilibrium and endemic equilibrium, and we gave conditions for which these equilibrium are stable. We presented some numerical simulation to investigate effects of quarantine on system dynamics.Item Mathematical Analysis of Transmission Dynamics of HIV/TB Co-Infection in the Presence of Treatment(Neelain University, 2018) Amani Abdalkreem Nogdalla AbdalkreemAbstract In this study we analyze a mathematical model for the HIV and TB co-infection for different treatment strategies. We analyze the TB and HIV/AIDS sub-models, we presented conditions for positivity and boundedness of solution. The HIV-only model is shown to have asymptotically stable equilibrium and we established conditions of the existence of the endemic equilibrium in terms of the reproduction number associated with the disease-free equilibrium. The TB-only model shows behavior of backward bifurcation, where the stable disease-free equilibrium exists with a stable endemic equilibrium when the associated reproduction number. We further analyze the full HIV/TB model to incorporate the treatment to the both diseases. A numerical simulation of the models is performed to investigate the effect certain parameters on the spread of the diseases.Item Applications of the Homotopy Perturbation Method and Sumudu Transform of the Linear and Nonlinear Differential Equations(2018) Sana Hassan Magboul AhmedAbstract This study is mainly focusing on the application of the homotopy perturbation method and Sumudu transform of the linear and nonlinear differential equations. It has established some defnitions and properties of homotopy perturbation method and Sumudu transform. The study combines the homotopy perturbation method and Sumudu transform. Consequently, it gives the solution in series form and approximates components, and _nds the exact solution. Then, it is applied to solve linear and nonlinear differential equations . Finally, the solutions of linear and nonlinear differential equations by this method, and the other methods will be compared. الخلاصة تتمركز هذه الدراسة مجملا في تطبيق طريقة ارتجاج الهموتوبيا وتحويل سمودو في حل المعادلات التفاضلية الخطية وغير الخطية . ستقوم الدراسة بتاسيس بعض التعريفات والخصائص بالنسبة لطريقة الارتجاج الهموتوبيا وتحويل سمودو.قامت الدراسة بدمج طريقة الارتجاج الهموتوبيا وتحويل سمودو. مما ادى الي ايجاد الحل فى شكل متسلسلة وتقريب المكونات لايجاد الحل التام. من ثم طبقت الدراسة لحل المعادلات التفاضلية الخطية وغير الخطية. واخيرا تمت مقارنة حلول المعادلات التفاضلية الخطية وغير الخطية بطرق اخرى.Item تحليل أثر استعمال الصمغ في حفظ بيض الدواجن عند درجات حرارة مختلفة(2006) امانى حسين ضو البيتAbstract This research followed an analytical methodology in the analysis of data concerning the experiment of using gum in the preservation of some poultry eggs at different degrees of temperature, in which detailed description of data was carried out to explain the independent variables and variables associated with them, the appropriate design for analysis and how to use it; and also the explanation of factorial experiment with two factors and two levels on the research data, The Complete Randomized Design (CRD) was applied . The data was put in tables that are suitable for manual analysis; and lastly the data was analyzed using the computer programme SPSS, and knowledge of the effect’ of each of gum, temperature degree and overlapping between them in the preservation of poultry eggs . The results were discussed and action was taken about them .Item التحليل الاحصائي لوفيات حوادث المرور في ولاية الخرطوم للفترة من 1993 -2002م(2006) مي صلاح الدين محمد شقلاويABSTRACT Sudan generally faces several and variant problem , among these traffic accidents in the state of Khartoum. This problem has become very critical due to several reasons. Data of this study has been collected of the concerned sources taken out of a selected group of variables, which have direct impacts upon traffic accidents. This data has been analized through linear pattern multi slope analysis. That is because it is considered the suitable approach if we want to investigate into effects upon the dependent variable to a group of in dependent variables at acknowledge point of time. This study focuses generally upon factors that affect traffic accidents between 1993-2002. Analysis has disclosed the high significances of pattern and its ability as to interpret changes upon the dependent variable .yet , SPSS , with step wise method its reject the three dependent variables : the second one is mini bus , the third is buses and the fifth is the tax ,these have little effects upon the dependent variable , and accept the first one is the private vehicles and fourth one is boxes . In the light of the analized variables, researcher recommend state interference in controlling and reducing car import process That’s beside controlling car liecence and drivers liecence and pedestrian awareness.Item سكان جمهورية السودان الديمقراطية واختياجاتهم الغذائية حتي سنة الفين وطرق تدبيرها(1976) منى عبدالفتاح خليفةItem تحليل السلاسل الزمنية لعلاقة الإصابة بالملاريا مع بعض العوامل المناخية والديمغرافية في السودان(2003) عواطف محمد النورABSTRACT This dissertation studies the relation between the lllt‘l(l€l‘lt‘t‘ of Malaria and weather indicators (temperature. relative humidity, rainfall and wind-speed) in addition to lllt number of population The study covers three different geographical areas which are the state of Khartoum, Gazira and the Northern tlLll'lllI‘ the time period of (1998-2002). The analyzed data of malaria eases were collected from hospitals (inpatients) monthly record and the influence ol the weather data was registered in meteorological publie corporation. The population data was collected from the Central Bureau of Statistics by using the transfer lunction models The research is constituted of an introduction about malaria sickness, the behavior of vector mosquitoes and the way ol data collection was exposed, as the numbers of incidence oi malaria, weather indicators and numbers of population. A statistical description of the variables of the study and the analysis of the data was conducted and the study ~. ame lt some important points which are as follows: Khartoum state is an endemic area of malaria lll which there is a progressive tendency in the numbei of malaria cases. The research through statistical analysis showed strong correlations bet\reen tht rainfall, population and the incidence of lllt malaria. Gezira state is depicted as a region in which malaria is an endemic disease. However, the analysis showed a decrease in number of the malaria cast->. in past years. The analysis shows that there is strong correlation between the climatic lactor.~- (rainfall, minimum of temperature and relati\-<- humidity) and the incidence of malaria. The analysis of data of the Northern state \'ll()\\'t'tl that it is not a malaria endemic region. l|'l\\'L‘\'t‘I through the analysis we get strong Co1'1't"latio1i,\ between climatic factors (minimum and maxinium of temperture) and the incidence of malaria.Item القوى العاملة بجمهورية السودان الديمقراطية وتقديراتها حتى عام 2000(1976) بيرتا فهمى سعيد