https://repository.sustech.edu/handle/123456789/1149 2026-04-06T05:56:02Z https://repository.sustech.edu/handle/123456789/5781 Title: «Description et Analyse des Problèmes de l’expression orale chez les apprenants du français à l’université du Soudan» Authors: HASSAN, Kholood; Supervisor , Bachir Bachir MOHAMED Abstract: The title of this study is “the problem of oral communication facing the students of 3rd year the French department at the collage of language”. These students who are on their 3rd year of studying French language as a first specializing or main study, but they are facing difficulties when they are making a communication between them or with guidance “the teacher”. Our main reason to work on this subject is to find answers of several questions which lead us at the end to solve the problems. Our objective is to describe and analysis the problems that create the lack level of the oral communication, to find out or discover the reasons and the causes of these problems and to try to identify the elements that facilitate the progress/growth of the communicative competence. To accomplish this work, we have choose a descriptive analytical methodology we talk firstly about the status of French language in Sudan and the situation of languages in Sudan as a country to accomplish this work, we have prepare. And make hypotheses which can lead us to very well describe the situation and reach an answer at the end. To achieve the main goal of this study we applied a descriptive and analytical methodology that help us in giving full information about the students environment during their study from the first year till the 3rd year. Which we focus particularly in the method of study “the book activities” we took in account of this study several questions via which we tried to verify our hypothesis. The first issue we tried to present is to give a full description about the situation of languages in Sudan. The status of French language in Sudan, the Sudanese universities and in Sudan University particularly presenting the number of hours and the lectures title. We talked about the communicative approach, the main objective of the method of study “the method consignee”. We have present the method objectives and the goals which it’s make for and the aims which is want to achieve. After that we a full description of the book concerning all it’s aspects, contents, grammar and its interests during the first and the second year of study. At the end we account all the activities and exercises presented in the first and second book of study showing the purpose of each exercise and its aim than want to achieve. The results we reached show us that all our hypotheses were true and correct. The study we made clarify and verify that the number of hours proposing for teaching the communicative competence (oral expression, communication, communicative interaction, seminar... etc) were not enough to achieve their objectives. The objectives and goals of the communicative approach or method is to give the students a communicative competence which the book of study (le Nouveau Sans Frontières) fail to achieve and lead at the end to have a lack communicative competence comparing with writing competence. These results confirm our hypothesis which state that the problems of the oral communication of the student of third year in French department are relating to the book of study (Nouveau Sans Frontières), to the insufficient number of hours of study and the activities proposed in room of study and out of it. Description: thèse 2011-03-01T00:00:00Z https://repository.sustech.edu/handle/123456789/2382 Title: Photobleaching of anthocyanins using tunable dye laser Authors: Ahmed,Wafa Omer; Supervisor, - Ahmed Hassan S. Elkheir Abstract: The flowers of Hibiscus sabdarifa were extracted with acidified methanol. The Anthocyanin of Hibiscus sabdarifa was obtained as red needles from absolute ethanol. A dye laser operating at 520 nm was used to bleach the red- colored anthocyanin. A mixture of the anthocyanin and triethylamine was irradiated with laser for 40 minutes. Under such conditions the iv ‫‪The anthocyanin then oxidizes triethylamine and reduces to a colourless‬‬ ‫.‪radical‬‬ ‫‪AS‬‬ ‫1‬ ‫*‪AS‬‬ ‫3‬ ‫‪hν‬‬ ‫0‪AS‬‬ ‫1*‬ ‫)‪(Red‬‬ ‫3*‪AS• + •NR‬‬ ‫3‬ ‫3‪AS* +:NR‬‬ ‫)‪(Colourless‬‬ ‫‬ Description: Thesis 2008-08-01T00:00:00Z https://repository.sustech.edu/handle/123456789/28398 Title: Automatic Recognition and Identification for Mixed Sudanese Arabic – English Languages Speech Authors: Elfahal, Mohammed Osman Eltayeb; Supervisor, Mohammed Elhafiz Mustafa; Co-Supervisor, Rashid A. Saeed Abstract: Mixed speech is the phenomena of using more than one language in a single sentence, this occurs in communication between bilinguals to express their ideas and thoughts using vocabulary of both languages, even occurs among none bilingual people to describe product originally from second language. This thesis addresses the problem of mixed speech communication in multilingual communities. This is regional problem faces shortage resources and studies. Sudanese Arabic and English languages are the two languages selected for this research to build a generalized mixed speech and language identification model, the first is common and formal language among the Sudan and the latter is international, language of science and primary lesson in Sudan education systems. For experimental purposes, mixed speech corpus was built including most frequent daily life Sudanese Arabic and English mixed sentences, collected through social media applications campaign, 75% of this collection is read by 87 bilingual Arabic natives in office environment resulting in 2289 audio files associated with their transcription for training purpose, considering speakers and code-switch types, environment as factors affecting performance of the model at recording time. Based on the assumption that native language dominance others in mixed speech, proposed solution for generalizing recognition model is centered around Sudanese Arabic language. The solution keeps the original words for each language participates in switching in all components of the model such as mixed phonetic dictionary, mixed languages lexicon, etc., except for Acoustic Model (AM) Arabic language is used instead of its original language based on assumption that native speaker does not suddenly reconfigure his articulation organs to produce sounds as natives do. Open source CMU SHPINX is adapted for this mixed speech task, proposed model, which is consider effected by native language dominance, outperforms existing single pass and multi pass models achieving overall accuracy of 33.05% in term of Word Error Rate (WER). Mixed speech produce hybrid language not belong to each participating language, interface for further linguistic computation is provided to deal with this new language. The interface contains recognized word, its order in the sentence, recognition confidence and its language identity. Language identification in the model is simply looked up identity from mixed languages lexicon to avoid effects of unclear language discrimination attributes in such speech. Achieved results, prove the possibility to generalize the model based on Arabic language, module for phonemes clustering and comparison needed to serve as front-end to detect new language phonemes that are not included in phonemes set in order to add new language to the model. 2019-08-25T00:00:00Z https://repository.sustech.edu/handle/123456789/28384 Title: أحوال اللام في سورتي البقرة وآل عمران Authors: عبد الدافع, إيمان عبدالله حسن; مشرف, -حسن منصور سوركتي Abstract: أبانت هذه الدراسة أحوال اللام تطبيقاً على سورتي البقرة وآل عمران، وقد انتهجت الباحثة فيها المنهج الوصفي التحليلي. وقامت الدارسة ببيان المواضع التي جاءت فيها اللام، وتقسيمها من حيث عملها إلى عاملة وتضمنت اللام الجارة والجازمة والناصبة مع ذكر أحوال كل منها. وأيضاً اللام غير العاملة حيث قسمت إلى "اللام الزائدة غير العاملة واللام غير الزائدة غير العاملة، مع بيان مواضعهما، والتطبيق على سورتي البقرة وآل عمران. تهدف الدراسة إلى إحصاء اللامات الواردة في كتب النحو المختلفة، وتطبيقها من القرآن الكريم، وإضافة معلومات لدراسِ من بعدي. وخلصت الدراسة إلى أهم نتائج منها: وذكرت اللام الموطئة للقسم في أربعة مواضع في سورة البقرة وأربعة مواضع أخرى في سورة آل عمران. ووردت اللام غير العاملة التي تدل على التوكيد في سورتي البقرة وآل عمران. Description: رسالة ماجستير 2022-09-22T00:00:00Z