https://repository.sustech.edu/handle/123456789/27112 2026-04-09T00:32:17Z https://repository.sustech.edu/handle/123456789/27385 Applying ArcGIS ModelBuilder to Determination the Suitable Sites for Establishing Basic Schools (Case Study: Eastern Unit - Port Sudan City) Abd Elrahman, Sahar I. M.; Ali, Badria; M. Ataalmanan, Ibrahim Geographic Information Systems (GIS) play an effective role in societal development, including supporting and developing the educational process with essential capabilities characterized by effectiveness, speed, and ease, which help support decision-making. The educational sector in the Eastern Unit - Port Sudan City suffers from randomness and poverty of equitable spatial distribution, therefore, this study was carried out to determine the appropriate sites for establishing new basic schools according to the recommended criteria, consequently, a model was created using model-builder tools and the spatial analyst tools were taken advantage in GIS. The criteria used in the study were obtained from the General Administration of Planning - Ministry of Urban Planning - State of Khartoum - Sudan and a satellite image of the study area was acquired and stratified into several layers that meet the objective and a lot of work was done in the ArcGIS 10.3 program until the best sites were found, and the final best site for a new basic school was determined from them. This shows the effectiveness of the program used in accurately determining the best sites according to international and local standards, which are difficult to access without the help of ArcGIS ModelBuilder, and thus benefit from it in serving the community by equitable distribution of basic schools and the possibility of all students to enroll in them. 2022-08-21T00:00:00Z https://repository.sustech.edu/handle/123456789/27384 دراسة العوامل المؤثرة علي الإنتاجية الموقعية لمشاريع التشييد في ولاية الخرطو م ذكي سعيد, أحمد; حسن عبد الرازق, عبد العزيز; آدم جمعة, مني عملية إبداعية تستخدم ستة مصادر رئيسية وتخلق منها منشئاً فريداً من نوعه، هذه العناصر هي المواد، الاليات، اليد العاملة، التقنية الهندسية، الأموال وإدارة التشييد, و رقم الدور الهام الذي تمثله مشاريع التشييد في بلادنا إلا أنها تتعرض خلال مختلف م ا رحلها إلى عدة مشاكل في سبيل تحقيق أهدافها ومن أهمها تدني الإنتاجية الموقعية في المشاريع الإنشائية. ولحدوث التدني أسباباً بالتأكيد وكما أن له مخاطر وآثا ا رً سالبة على جدوى المشروع. يهدف هذا البحث لد ا رسة العوامل المؤثرة على الإنتاجية الموقعية للمشاريع الإنشائية في ولاية الخرطوم بالتركيز على مفهوم الإنتاجية وأهميتها وطرق قياسها، وكذلك أهم العوامل المؤثرة فيها, ومن أجل تحقيق هذا الهدف كان لابد من انتهاج منهجاً خاصاً، حيث تم تصميم استبيان وإج ا رء مقابلات لد ا رسة هذه العوامل التي تعاني منها المواقع الإنشائية، و قد أظهرت نتائج الإستبيان أن نسبة المؤسسات العاملة في صناعة التشييد والتي تقوم بتدريب العمالة تمثل نسبة 30 %, وأن المؤسسات العاملة في صناعة التشييد والتي ليس لديها منهجية محددة لتدريب العمالة تقدر بنسبة 56.7 %, وقد أظهرت نتائج التحليل أن أهم هذه العوامل التي تؤثر على الإنتاجية الموقعية لها علاقة بالعاملين في مواقع التشييد مثل الحوافز المادية والمعنوية واستخدام التقنيات الحديثة وعدم تدريب المؤسسات للعاملين وتطبيق نظام الجودة. وبناءاً على هذه النتائج وضعت الحلول المقترحة لتحسين ال وضع الحالي، ضرورة تنمية الموارد البشرية وتهيئة بيئة العمل المناسبة وم ا رجعة صيغ الأجور وأساليب التحفيز واستخدام التقنيات الحديثة. 2022-08-21T00:00:00Z https://repository.sustech.edu/handle/123456789/27383 Nonisothermal Crystallization Kinetics and Its Effect on the Mechanical Properties Mechanical of Carbon Fiber/Polyphenylene Sulfide Composites A. M. Hassan, Elwathig.; H. Elagib, Tienah; A. Ahmed, Mutasim; O. Bashier, Ezelarab The degree of crystallization of semi-crystalline thermoplastics is an important factor in determining the final properties of the structure of composite materials. This article studied the non-isothermal crystallization kinetics of carbon fiber (CF) reinforced polyphenylene sulfide (PPS) composites by differential scanning calorimetry (DSC) with various cooling rates from 10 k/min to 70 k/min. The MoZhiShen method was applied to the analysis of the nonisothermal crystallization of the composites. Moreover, the effects of the crystallization behavior of CF/PPS composites on their mechanical properties were also investigated. It was found that the MoZhiShen method can effectively be applied to study the nonisothermal crystallization kinetics of CF/PPS composites. The result indicated that the crystallization peak gradually became strengthened in intensity, and crystallization decreased with increasing the cooling rate. Moreover, the increase in the cooling rate during composite fabrication was found to decrease the flexural properties of the composite, but the energy absorption and the impact strength were significantly increased by 15.1%. 2022-08-21T00:00:00Z https://repository.sustech.edu/handle/123456789/27210 Design of a Noninvasive Magnetic Hyperthermia System for Breast Tumors Using Fe3O4 Nanoparticles A.Yahya, Maged; Y. Ahmed, Sulafa; M. Eltigani, Faihaa; G. Abdalrahman, Mawahib Breast cancer is the second leading cause of death among women in the 40 – 55 age group. There are many methods to treat breast cancer, such as chemotherapy and radiation, but they have many side effects, such as hair loss and weakness. Magnetic hyperthermia is a modality that gives new hope for cancer treatment with minimum side effects. This technique relies on raising the temperature of the tumor to 41- 45°C by the alternating magnetic field generated from the magnetic coil. This study aims to design a suitable magnetic hyperthermia system comprised of breast models with tumors and coil to be used as a source of alternating magnetic field. First, the magnetic coil was designed and tested, and then six 3D breast models were created. These models differ in the number of layers and the position of the tumor. Fe3O4 magnetic nanoparticles (MNPs) were added to each tumor. After that, the magnetic coil was tested on the models and temperature elevation and distribution were calculated. The tumor near the surface reached a temperature of 44.2 ºC and the deep tumor had a temperature of 42.5 ºC while the surrounding tissues remain at safe temperature ranges. The results showed the capability of the designed coil to raise the temperature of breast tumors to the therapeutic range. 2021-04-13T00:00:00Z