flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

برنامه ریزی عبارتست از انجام کارهایی در امروز، جهت ساختن فردایی بهتر، چرا که آینده به کسانی تعلق دارد که قادرند تصمیمات سخت خود را امروز بگیرند. برنامه ریزی استراتژیک بعنوان ابزاری جهت تصمیم گیری چندبعدی جهت رسیدن به آرمانها و اهداف سازمانی است . حتی سازمانهای غیررسمی و غیرساختار یافته نیز استراتژی دارند. لکن سازمانها همواره باید این امر را مدنظر داشته باشند که در صنعت خود بجای عکس العملی، پیشت...

the purpose of the research is to examine if integrating cooperative learning into vocabulary learning helps to increase word recognition of students in an elementary school in iran. it tries to investigate whether cooperative learning approach enables students to improve their language learning. this research used stad (students team achievement division) as a cooperative model in this study. ...

abstract: the present study is about prophet ishmael, some parts of his life; his personality in the quran and the bible; and the comparison of the content of these two religious books. compilation of the study has been done with a new perspective and new presentation approach. since prophets have been human beings’ role model and their life has been a perfect example for humanity in all ages,...

‏‎the community dynamics of aquatic coleoptera(insecta)in one of the spring-stream habitats of bammo national park in fars province called cheshmeh-ye-ghanbari is studied as a pilot project and model for acquaintance with and furthering the biodiversity studies on fauna of iran. sixteen species-populations out of nineteen of this community were already identified for their taxonomy and for thei...