نجاح دقماق, نيبال ياسر اسحق سلامين

كلية الدراسات العليا-جامعة القدس · فلسطين

محمد الفديع الروقي, محمد عبد الله الشنقيطي

كلية الدراسات العليا-جامعة نايف العربية للعلوم الأمنية · السعودية

سومر أديب ناصر, علي ميا, لطيف زيود

كلية الاقتصاد-جامعة تشرين · سوريا

Akila Tekha, Fatma Tellab, Oussama Aiadi , Zahi Ayat

كلية الرياضيات وعلوم المادة-جامعة قاصدى مرباح ورقلة · الجزائر

Cette étude propose une approche basée sur l’intelligence artificielle, notamment l’apprentissage supervisé, pour améliorer le diagnostic du cancer de la prostate. Les données de 327 patients de l’hôpital Mohamed Boudiaf à Ouargla ont été analysées, et plusieurs algorithmes de classification ont été comparés. Le modèle de réseau de neurones artificiels (ANN) a montré de bonnes performances globales, contrairement au modèle SVM à noyau linéaire qui, bien qu’ayant atteint une précision de 98 %, n’a pas réussi à classifier correctement les classes minoritaires. Ainsi, le modèle ANN a été retenu comme la meilleure option. This study proposes an approach based on artificial intelligence, specifically supervised machine learning, to improve the diagnosis of prostate cancer. Data from 327 patients at Mohamed Boudiaf Hospital in Ouargla were analyzed, and various classification algorithms were compared. The Artificial Neural Network (ANN) model demonstrated balanced overall performance, unlike the linear kernel Support Vector Machine (SVM), which, despite achieving 98% accuracy, failed to correctly classify minority classes. Therefore, the ANN model was selected as the best option.

معاوية حسن عطية, يوسف العبيد السيد

كلية الدراسات العليا والبحث العلمي-جامعة شندي · السودان

تعتبر الفترة العثمانية من الفترات المهمة في منطقة الشلال الثالث خلاف الفترة الإسلامية ، في المقابل هنالك االقليل من الأبحاث الأثارية التي تمت ، تهدف الدراسة على ألقاء الضوء عليها بتتبع طبيعة أثارها في المتمثلة في الحصون المنتشرة في منطقة المحس وإظهار تأثيراتها الاجتماعية ، الاقتصادية ، السياسية ، والعسكرية .الباحث استخدم منهج التحليل والمقارنة الذي كشف الوجود الفعلي للعثانيين ودورهم في تأمين حدود مصر الجنوبية ، حماية السكان من هجمات الأعداء وإدارة التجارة بالسسطرة على الطرق النيلية والبرية .توصي هذه الدراسة بإجراء المزيد من الأبحاث والحفاظ على المواقع الأثرة الموجودة في المنطقة ، نسبة لأهميتها كدليل يمثل الفترة الإسلامية العثمانية في السودان.

Amar Mohamed Ismail, Walaa Abdallah Farah Dow

كلية الدراسات العليا-جامعة النيلين · السودان

Background: Honey has a wide range of applications in food industries. It can be consumed directly or be used as an ingredient of various processed foods as it has nutritional value and unique flavor.Aim: The aim of this study was to investigate the honey properties and their medicinal uses. Materials and Methods: In systemic review study 52 studies were collected. Different types of extracts of honey (Water, Methanol and ethers) were analyzed.Results: Honey has different contents and different philological effects. Conclusion: Honey exhibits potential therapeutic effect, which might attribute to carbohydrates, vitamins, proteins and minerals

جوهرة زرماط, شافعي بديار, وحيدة جبايلي

كلية الأداب واللغات-جامعة العربي بن مهيدي - أم البواقي · الجزائر

سعى والحمد لله بحثنا هذا إلى دراسة نهج البلاغة دراسة بلاغية بأقسامها الثلاثة المشهورة: البيان، المعاني، البديع فيجمع البحث بين طرائق التعبير وأفانينه المختلفة إلى أساليب المخاطبة ومدى ملائمتها لمقتضى الحال.وأخيرًا يّسلط الضوء على الجانب البديعي الفنّي الجمالي

Bourada Fouad, امل بطومي, فاطيمة مناع

كلية العلوم والتكنولوجيا-جامعة أحمد بن يحيى الونشريسي - تيسمسيلت · الجزائر

Dans ce travail de recherche, l’ vibratoire des poutres simplement appuyées est présentée en utilisant la théorie de déformation de cisaillement hyperbolique. Les imperfections sous forme des micro-vides qui peut être introduit durant la phase de fabrication sont prise sen compte. La loi de mélange de puissance (P-FGM) est employée après des modifications pour décrire d’une façon approximative les propriétés matérielles effectives des poutres FGavec la présence des pores. Le principe d’Hamilton est utilisé pour dérivé les équations de mouvement. Les solutions analytiques sont obtenues en utilisant la méthode de NavierL’exactitude et l’efficacité des résultats du présent modèleront confirmé réponse dynamique des poutres fonctionnellement graduée.

Bilal El Ariss, Shahrukh Shoaib Ahmed Zia Ul Haq

كلية الهندسة-جامعة الإمارات العربية المتحدة · الامارات

Recycling construction waste material offers a sustainable solution to the problem of disposing of concrete construction and demolition waste. The use of basalt fibers (BF) and basalt fiber-reinforced polymer (BFRP) reinforcing bars in concrete structures made of recycled concrete aggregate (RCA) would prolong their service life and reduce the maintenance cost. This research aims to investigate the potential use of BF, RCA, and BFRP reinforcing bars to produce sustainable and steel-free structural concrete. The study consisted of material characterization testing, numerical simulation, and large-scale beam testing. Material characterization tests were performed on normal-strength concrete (NSC) and high-strength concrete (HSC). The RCA replacement in characterization tests varied as 30, 60, and 100%. Three different sizes of BF i.e., 20, 43, and 50-mm in length were used in the characterization tests. The volume fraction ( v f) of BF varied in the range of 0.5-1.5%. Fresh and hardened properties of concrete mixtures with different RCA replacement ratios and various combinations and volume fractions of BF were examined. Plain concrete mixtures made with RCA exhibited inferior properties relative to those made with natural aggregates (NA). The negative effect of RCA was more pronounced for HSC than NSC. The incorporation of BF improved the tensile properties of NA- and RCAbased concrete mixtures. The effectiveness of BF in improving the properties of concrete tended to be more pronounced for NSC than HSC. New tensile softening constitutive laws characterizing the post-cracking behavior of NA- and RCA-based concrete mixtures were established using an inverse analysis of characterization test data. The new tensile softening laws were used as input data in numerical simulation models of large-scale concrete beams made with RCA, BF, and BFRP reinforcing bars. The accuracy and validity of the numerical models developed in the present study were examined through a comparative analysis with experimental results of large-scale concrete beams tested in the UAEU laboratory. Experimental tests revealed that the addition of BF had an insignificant effect on the shear capacity of NA-based beams, irrespective of BF sizes and combinations. However, the beam with RCA exhibited a strength gain of 51% with the addition of the BF. The developed numerical models predicted the shear capacity of the tested beams with good accuracy. A parametric study was conducted to examine the effect of varying the RCA replacement percentage and BF volume fraction on the shear behavior of BFRP-reinforced concrete beams. Test variables comprised RCA replacement (30, 60, and 100%) and BF volume fractions (0.5, 1.0, and 1.5%). Results of the parametric study indicated that the incorporation of the RCA in concrete mixture resulted in strength reduction of the beam models in the range of 10-28%. The inclusion of BF at a v f of 0.5% to the beam models with 30 and 60% RCA fully restored the original shear capacity of the control beam model with NA. The addition of BF at v f = 1.5% to the beam model with 100% RCA restored 93% of the original shear capacity of the control beam model with NA. Research findings are anticipated to contribute to the advancement of the concept of circular economy through the development of sustainable construction materials and simulation models capable of predicting the shear behavior of concrete beams made of RCA and BF internally reinforced with BFRP composite reinforcing bars.

Hatem Zenzri, Sebti Jaballi

المدرسة الوطنية للمهندسين - تونس-جامعة تونس المنار · تونس