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 study aims to design a strategic model of talent management system in the petrochemical industry and by using Grounded Theory. The present study is part of exploratory research projects. the researcher has collected data with a qualitative approach with a careful review of literature and history of talent management, researches, articles and books of internal and external literature as wel...

we have devided the thesis in to five chapters. the first recollects facts from purely algebraic theory of jordan algebras and also basic properties of jb and jb* - algebras which are needed in the sequel. in the second chapter we extend to jb* - algebras, a classical result due to cleveland [8]. this result shows shows the weakness of jb* - norm topology on a jb* - algebera. in chapter three, ...

  Background and aims: The construction industry continues to rank among the most dangerous industries worldwide. The aim of this study was to investigate the factors influencing unsafe behavior in the construction industry from the perspective of experienced workers, supervisors and managers.   Methods: Triangulation approach was used for data generation in this grounded theory study. Sixty ni...

Economic development in societies depends on resources (capital, government, human resources) research has shown that role of human resources in human development is very important. However, many factors, including media, which have an awareness-raising mission can be effective in human development. Human development using media requires a strategy, but in our country there is a lack of researc...

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. ...

the aim of this thesis is an approach for assessing insurer’s solvency for iranian insurance companies. we use of economic data with both time series and cross-sectional variation, thus by using the panel data model will survey the insurer solvency.