We consider a juvenile adult model with spatial structure and selective harvesting e¤ort on adult population .The dynamic behavior of the model system is investigated.The results indicate that competition between adults and cannibalism on juveniles do not a¤ect the population survival.Bioeconomic equilibrium and optimal harvesting are discussed.Finally some numerical simulations are given to illustrate theoretical results.
Graduate Algerian economic sciences students, who will be future university teachers or workplace managers, are urged to use the English language. However, most of them reveal that they are unable to use the English language appropriately. The main aim in this paper is to depict students’ difficulties and help them improve their academic language performance. This paper describes the teaching and learning situations of English for Business and Economics (EBE) in the Department of Economic Sciences at the University of Tlemcen. The investigator used a questionnaire and two structured interviews. The sampling included EBE learners and English for specific purposes teachers as well as workplace managers (former EBE students). The main findings in this investigation confirmed that students had poor target language proficiency. Results revealed that the content of the actual EBE course was inappropriate to learners’ needs. The investigator wants to integrate new technologies as the government supplies digital platforms to the Algerian universities.
Keywords: Algerian, tertiary education, English, Economics, business students.
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