in this investigation the effect of external field on the electron density of nanostructures of cds, cdse, cdte, gaas and polymeric structure of three, four, five and six units of cds as a kind of nanosolar cells has been studied theoretically. as modeling this system in nanodimension, molecular structures has used. specific properties of molecular structures permit us to consider different sym...

This paper tries to comparatively study agricultural products insurance factors and the international agricultural products insurance systems in developed and developing countries. It analyses these supporting systems typology form the view points of variables such as covered risk factors, program insurer and the insured, insurance projects operational fundamentals, insurance system type (priva...

the present study reports an analysis of response articles in four different disciplines in the social sciences, i.e., linguistics, english for specific purposes (esp), accounting, and psychology. the study has three phases: micro analysis, macro analysis, and e-mail interview. the results of the micro analysis indicate that a three-level linguistic pattern is used by the writers in order to cr...

Background and Aim: Agents can provide suitable infrastructure for follow-up data analysis and Chronic Heart Failure (CHF) management due to their many advantages such as autonomy and pro-activeness. The aim of this article is to explain the key points which should appropriately be considered in designing a CHF management system.   Materials and Methods: In this literature review, articles wit...

this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...