Khadidja Mahzem, Assia Balla, Bektache Mourad

جامعة عبد الرحمان ميرة - بجاية · الجزائر

L'intérêt porté sur les attitudes et les représentations sociolinguistiques a pris une grande place dans les recherches présente. Plusieurs linguistes se sont intéressés par ses deux notions, prouve que de nombreux points de rencontre se trouvent entre ses deux dernières, de ce fait ce travail propose étudier les attitudes sociolinguistiques des commerçants et la relation étroite avec les langues que leurs clients utilisent

Ashraf Mohi Eldien Mohammed Dawod, Ibrahim Saeed Mohamed

كلية الدراسات العليا-جامعة السودان للعلوم والتكنولوجيا · السودان

Sorghum is considered one of the major cereal crop and staple food as well for millions of the poorest and most food insecure people in many part of the world and in Sudan as well. The production and consumption of sorghum is constrained by several factors, the most important among which are seed-borne fungal species. In addition to causing quantitative losses, these spoilage fungi produce highly toxic and carcinogenic mycotoxins. In view of the negative public health and economic impacts of fungi producing mycotoxins associated with sorghum grains, this study, aimed at exploring and investigating on presence of pathogenic fungi associated with seeds in samples of sorghum collected from Gadaref, and Rabak in Sudan under different storage conditions. The results obtained revealed that irrespective of source of seed samples, the association of seed borne fungi with sorghum grains in different varieties appears to be a prevalent situation. The four most prevailing seed borne fungi recorded across sorghum varieties and storage facilities were the storage ones; Aspergillus flavus, Aspergillus Niger, Alternaria solani and Phoma longum with varying level of incidences ranging from 3.33 to 63.3%. The significantly high percentage incidence was given by the fungus P. longum (63.3%) in variety Fetarita. The predominance of some spoilage fungi under modern silo storage was attributed to infection prior to storage. The significance of these results was discussed.

Kahina Boudehouche, Bachir Haderbache, Roumaissa Bouaiche

كلية العلوم الإنسانية والاجتماعية-جامعة عبد الرحمان ميرة - بجاية · الجزائر

Recherche vise à comprendre le processus de création et de gestion des entreprises des femmes entrepreneures bougeottes. Ce qui va nous permettre de répondre aux questions principales de cette recherche : quel est le rôle que joue le capital personnel durant la phase de création des entreprises des femmes entrepreneures et durant le développement de leurs activités ? ; et quel est l’apport des liens sociaux (famille et amis) durant la création et gestion des PME des femmes entrepreneures ?

عبدالله ياسين بلال, يحيى كمخلي

كلية الاقتصاد-جامعة حلب · سوريا

Emily Giles, Michael Berumen

جامعة الملك عبدالله للعلوم والتقنية · السعودية

While geographic distance is a variable often used to explain population genetic differentiation, dynamic processes leading to stochastic population structure are more likely driving factors. The following thesis presents the population structure of a common reef sponge, Stylissa carteri, and yields hypotheses on the influence ofenvironmental heterogeneity as a predictor of the observed population structure. Thisproject represents the largest population genetics study thus conducted in the Red Sea andalso includes the first population genetics data gathered for sites off the coast of Sudanand Soccotra. The study herein presented includes both a large scale (36 reef sitescovering over 1000km of coastline) and small-scale (16 transects of 50m each) analysisof gene flow in a benthic dwelling organism. The variable effect of geography andenvironmental conditions on S. carteri population structure is assessed using a seascapegenetics approach. Environmental factors from a nine-year dataset accessed from theNASA Giovanni website including chlorophyll a, sea surface temperature, dissolved andparticulate organic matter for both the annual and winter temporal scale were considered.

Ernesto Damiani, Hamdan Al Ahbabi, Ibrahim (Abe) M. Elfadel

جامعة خليفة · الامارات

Since the introduction of Bitcoin, the cryptocurrency market has witnessed significant growth in both market value and the number of available cryptocurrencies. However, this market is characterized by heterogeneity, with a wide variety of cryptocurrencies exhibiting diverse technologies, user bases, and use cases. This heterogeneity makes it challenging for investors to make informed decisions. To address this issue, this thesis aims to assess the heterogeneity of the crypto market using clustering methods, enhanced by back-testing. By incorporating back-testing into clustering techniques, the thesis examines the historical performance of clusters, thus providing a measure of their validity. The study utilizes a five-year dataset, considering different time periods to evaluate the clusters’ consistency. The clustering process involves three methods: K-means clustering, dynamic clustering using histograms, and TADPole clustering based on time-series volatility. The data is transformed into distinct distributions of returns, enabling the application of each clustering method. The optimal number of clusters for K-means clustering is determined using cluster validity indices. Furthermore, association tests are conducted between the clusters and various variables, including market capitalization, trading volume, financial ratios such as Beta and Sharpe Ratio, and heavy-tail behavior. Fisher’s test is employed to assess the significance of these associations, providing additional insights into the cluster characteristics. In cases where time-series clustering fails, the Hierarchical Risk Parity (HRP) algorithm is utilized to cluster highly correlated coins.

Amina Belmeliani, Ilhem Serir Mortad, Meriem Mengouchi, Sarra Belkhatir

كلية الآداب واللغات-جامعة أبو بكر بلقايد - تلمسان · الجزائر

Henry James‟ and Jane Austen‟s portrayal of women throughout their literary works; Daisy Miller and Pride and Prejudice respectively presents the woman‟s situation in the nineteenth century as inferior and victim of social expectations. From Daisy Miller, James describes these practices from the eyes of his protagonist Daisy Miller, her behaviors and manners. Accordingly, in Pride and Prejudice, Jane Austen established herself as a distinguished feminist novelist in her treatment of women status, especially, the matter of marriage. The theoretical part involves an overview about the Victorian Age in England and American society, the emergence of feminism through its three waves in addition to the development of feminine novel in the nineteenth century by its well known writers. For example; Mary Wollstonecraft, Elizabeth Gaskell, and charlotte Bronte. Whereas, the Analytical chapter, centers on the study and description of the female characters particularly the American and European female protagonists Daisy Miller and Elizabeth Bennet, their behaviors and manners to fight obstacles and struggles which faced them. Prejudice is one of the barriers from which women suffered. Which end, each writer presents his/ her manners defending women‟s rights and duties. The study concludes with the assertion that Henry James is a feminist writer after his depiction of his female character

العيد الراعي, ايناس ابتسام بيتور, سامية ترباح

كلية الحقوق والعلوم السياسية-جامعة غرداية · الجزائر

يعد موضوع عقد الامتياز في التشريع الجزائري من أهم المواضيع التي عرفت اهتماما كبيرا ويعتبر من أشهروأخر العقود الإدارية المسماة والصورة الأكثر شيوعا، وذلك بتنظيمه كأحد الأساليب لتسيير المرافق العامة منطرف المشرع الجزائري، كما أنو عقد يقوم على أساس أن يتفرد شخص بعينة طبيعيا أو اعتباريا بمركز قانوني متميزبتمكن بموجبه من ممارسة نشاط معين، ويترتب تنفيذه على الأطراف سواء بالنسبة للإدارة المانحة الإمتياز أوالملتزم، حيث قام المشرع الجزائري بتحديد الإجراءات والمدة لهم.

نوارة محمد, ابراهيم صيقع, عامر زناتي, نوارة يوسف

كلية العلوم الاجتماعية والإنسانية-جامعة زيان عاشور - الجلفة · الجزائر

A.a.fakir, H. Lounici, Hadjila Talbi , Nassima Guealia

كلية العلوم والعلوم التطبيقية-جامعة اكلى محند أولحاج - البويرة · الجزائر

Les procédés d’oxydation avancés (POA) permettent ladégradation totale (minéralisation) en milieu aqueux des polluantsorganiques persistants et/ou toxiques pour l’homme et pourl’environnement. Cette étude porte sur l’application de deux procédésprincipaux : procédé Fenton et électro-Fenton, sur la dégradation decolorant Fuchsine basique et de déterminer les conditions optimales desa dégradation. La particularité de ces procédés tient à la générationdans le milieu d’entités oxydantes très réactives, les radicauxhydroxyles (.OH) qui sont capables d’oxyder n’importe quel polluantorganique ou organométallique jusqu’au stade ultime d’oxydation,c’est-à-dire la minéralisation (transformation en CO2 et H2O2).Dans le cas de colorant étudié (FB), il a été montré que le tauxde minéralisation par le procédé éléctro-Fenton dépend des paramètresexpérimentaux tels que l’intensité du courant appliqué, laconcentration du support électrolytique, etc...Cette étude a montré que l’électrolyse du colorant suite une cinétiquede pseudo premier ordre. Dans les conditions expérimentalesoptimales (I = 300 mA et [Na2SO4 ] = 40 mM, pH= 3), le taux dedégradation obtenu pour la solution aqueuse de colorant étudié est100% après 6 min de traitement.Le taux de minéralisation par le procédé Fenton est fonction desdoses des réactifs utilisés et de rapport R = [H2O2] / [Fe2+], pH dumilieu.Ainsi, le taux de dégradation obtenu est de l’ordre de 97,56 % pourune durée de traitement de 120 min. Une loi cinétique simplifiée depseudo-premier ordre s’applique correctement sur toute la durée deréaction.