Undergraduate Dissertations

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    A 4-Stories Building Elevator Control System
    (UOFK, 2012-07) El-Hassan, Nemat Hassan Ahmed
    The purpose of this project is to design, program and build "prototype" 4-story building elevator control using PLC. The PLC used is S7200 with 14 inputs and 10 outputs. The elevator should operate in a power saving mode; therefore an intelligent design is used. The elevator control system is programmed in a ladder diagram format into the PLC. The operation of the programmed PLC is first tested in a computer environment using a simulation program "MICROwin" before wiring the PLC to the hardware "prototype". Some suggestions on how to extend this system to the control of more than four floors are also included.
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    A 4-Stories Building Elevator Control System
    (University of Khartoum, 2011) Omer, Hadeel Omer Dafa Allah
    This project is developed by using a Programmable logic controller (PLC) to control a 4-stories building elevator. The project system is running by calling each floor using the push buttons available at each floor and inside the car and the PLC would service your call as fast as possible. Floor sensors determine the current position of the elevator car and determine its direction (up or down). The program downloaded in the PLC determines whether the car would go up or down according to the last visited floor. As a result the car moves up and down according to the issued call and the last visited floor. After the program was tested a prototype developed and tested.
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    A. Solving The Thesis Defense Timetabling Problem Using Heuristic Methods
    (University of Khartoum, 2017) Albashir, Maha Ali Mohamed
    This project aimed to solve the problem of timetabling specifically Thesis Defense Timetabling problem. For many decades solving timetabling problems and producing an optimal solution was considered a hard problem, since producing manual timetables requires a lot of time and effort. Solving thesis defense timetabling problem requires scheduling of group of projects into sessions and rooms and assigning a number of teachers to them as a committee according to certain constraints. This problem is new to the literature and a little work is done in the area of thesis defense timetabling problem. For solving this problem, hyper-heuristic approach was used. Hyper-heuristics are considered as an improvement methodologies that control a set of low level heuristics during the search process. In this study, the performance of set of low level heuristics was evaluated along with three move acceptance methods to produce the better solution from all. The best solution resulted in considerable reduction of constraints violations. This hyper-heuristic has been tested using a real world data coming from University of Khartoum.
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    Accounting for the Environment Case Study: Shell Sudan Co. Ltd
    (Graduate College-School of Management Studies-University of Khartoum, 2003) Ahmed, Salma Mukhtar
    Abstract This Study investigates Environmental Accounting practice in Shell Sudan Co.as one of the oldest and greatest oil companies in Sudan, and the first to adopt a clear policy towards environment. The study attempts to document the experience of Shell Sudan in environmental reporting and accounting and compare this experience with the existing literature,taking into consideration the differences in application between developed countries and developing countries. The study found that the environmental accounting and reporting system adopted by Shell Sudan is consistent with Shell Group standards and with the existing Literature. The defect is that finance staff are not involved in the reporting procedures and not well aware about environmental issues.
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    Active Learning Effects on Efl Classroom Interaction: Case Study of University of Khartoum Freshman Students
    (University of Khartoum, ) Yousif Alhassan Abdallah Alhassan ; Gubara Abdalla Mohamed al-Hassan ; Department of English
    The study subsumes both quantitative and qualitative research methods with the objective of investigating the effects of active learning on EFL learners’ interaction, autonomy and achievement. The researcher has employed two tools for data collection, tests and participant observation. The quantitative research utilizes a pre-tests and a post-tests as mediated with treatment courses to uncover overt change on behalf of the subjects’ (learners’) performance. The treatment courses which incorporate active learning were delivered to a fresher sample of the subjects of two faculties: the School of Management and the Faculty of Dentistry at the University of Khartoum. Each group of the subjects constitutes a whole class, yet the students were put into two sub-groups. The subjects of the study were 259 with 72 male students. The means of test grades of the learners’ interaction, autonomy, and achievement shifted from: 3.67, 3.85, and 37.8 in the pre-test to 12.9, and 12.1 and 74.5 in the posttest respectively. SPSS was used for quantitative data analysis. For the qualitative methods, detailed remarks and features on the class presentations by the students were observed, video-taped, and reported. Qualitative participant observation helped to demonstrate the learners’ capabilities in adopting active learning techniques during their presentations. The results of both qualitative and quantitative methods conclude that active learning can improve EFL leaners’ achievement, inspire increased interaction, and generate independent learning. Moreover, the results approve the flexibility and the entertaining nature of active learning which may qualify to be an up-to-date interest to educators, course designers, and teachers of English language at university level. An additional finding is that female subjects outperformed male ones regarding interactive skills. Thus, further research on this area may investigate: the effects of such interactive characteristics as gender, residence, origin, and type of admission on the allocation of active learning as well as its implementation in science classes or applications at school level
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    Adsorption of Some Acids on Activated charcoal
    (University of Khartoum, 2012-09) TagElsir, Fatima
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    Adult Dragonflies Of Khartoum
    (University of Khartoum, 2012-09) Aymen, Summeia
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    Adversarial Attacks aginst Intrusing Detection System IDS
    (University of Kkhartoum, 2014-02) abdelazim, sara ; abdelhafiz, tasneem ; nada, mohamed
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    Aframework for broker/producer/conseumer web services
    (University of Khartoum, 2013-06) abdorahman, ali ; mahgoub, yahia ; mohammed, sami
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    Ameliorative effects of salicylic acid on salt stressed Gossypium hirsutum L. AND Zea mays L. seedlings
    (University of Khartoum, 2012-09) Elnour Musa Elnour, Wesal
    Ameliorative effects of salicylic acid on salt stressed Gossypium hirsutum L. AND Zea mays L. seedlings
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    Anaemia among pregnant ladies at Maternity Hospital - Omdurman (2008)
    (University of Khartoum, 2008) Hadab, Fatima
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    Analyse de (Ie mal entendu)
    (University of Khartoum, 2002-05) Ahmed, Fatima
    Analyse de (Ie mal entendu)
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    Analysis And Simulation Of Interference In Code Division Multiple Access (Cdma) Wireless System
    (University of Khartoum, 2005) Ahmed, Musa ELrayah ELemam
    To achieve the requirements of high capacity applications such as multimedia services, large coverage and large number of simultaneous users, CDMA IS-95 technology is designed. CDMA is the currently the most used technology in wireless communications and is also targeted for the third generation of wireless standards for its better spectral efficiency, better performance and easier base station placement compared to other technologies. CDMA system is interference limited and so must utilize some form of interference reduction in order to maintain an acceptable quality of services and capacity. Interference is related to important indicators of customer's satisfaction (grade of service). In this project interference in IS-95 CDMA cellular system is demonstrated, analyzed and computed using simulation (MATLAB) and analytical methods. The effects of changing number of users, processing gain, multipath delays and variance of noise on interference are investigated. The bit error rate (BER) of IS-95 CDMA is obtained by simulation. The expression of cell capacity in CDMA is given in the ideal case of perfect (APC), also expression is given in case of additional parameters.
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    Analysis of Ipomeae batatas By Xray Fluorecence Spectroscopy
    (University of Khartoum, 2012-09) Elameen, Sara
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    Analysis of Power Systems Problems Using Power System Analysis Toolbox (Psat)
    (University of Khartoum, 2011) Osman, Mohammed Mahmoud Mohammed El-hag
    The Power System Analysis toolbox PSAT has been developed to assist in typical Electrical Power System Analysis. The one of the objectives of this project is to develop an educational toolbox for Electrical Power System students and lecturers in order to solve some of Power System problems: Power Flow Analysis, Voltage Stability Analysis and Transient Stability Analysis. All this kinds of problems consists of various methods of mathematical calculation which is difficult to perform by using manual calculation (formula and calculator). The existence of this educational toolbox will help the user to calculate the calculation become faster and easier. For this purpose, three power systems case studies were chosen to model for each type of problems, which were mentioned above The simulation results of the three case studies gained by PSAT were proved that the PSAT can be used reliably for education and researches purposes to solve electrical power system problems.
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    Analysis of Sudanese Toombak using Xray Flouresence Technique
    (University of Khartoum, 2013-07) Bashir, Hala
    Analysis of sudanese toombak using Xray flouresence technique