in this thesis,spin dependend transport and electron transport through of ng/sg(graphene/ superconductor graphen) are studied in the junction of ng/fgt/sg. due to andreev reflection conductance increases in the presence of superconductor graphene.also, by applying a voltage gate on a superconductor, fermi level shifts and the conductance is independent of ferromagnatic substrate. also, the cond...

The role and importance of social capital as a modern concept in the social, cultural, political and economic contexts of the societies and its important functions besides the other types of capitals (cultural, human, physical and economic) places a greater attention on the development of this concept. Comparative studies have also been conducted to analyze and compare the positive impacts of s...

abstract the aim of this study was threefold: (1) to investigate the relationship between knowledge of semantic prosody and efl learners general language proficiency; (2) to examine the relationship between qualitative as well as quantitative knowledge of words, and (3) to compare the performance of efl learner on receptive and productive measures of semantic prosody. the study is based on a...

the present study seeks to determine the effect of explicit instruction of metacognitive strategies on iranian high school students’ reading comprehension ability. it also attempts to investigate the relationship between the learners reading comprehension and metacognitive strategies. furthermore, the study investigates whether iranian efl female high school students are high, medium, or low me...

Economists use human capital as a black box in their models, regardless of the content. It does not have the necessary importance and effectiveness for policy development of higher learning and employment of higher education graduates. Therefore, this study aimed to reopen this black box and analyze its content theoretically and experimentally. To achieve this goal, first the concept of human c...

Introduction: Intellectual capital, a collection of intangible and knowledgeable assets of organizations, has a significant effect on the competitive advantage and effectiveness of organizations. Methods: The present study has been done by a combination method of qualitative-quantitative. The statistical population in the qualitative section includes all experts and managers of management scien...

abstract since heubners (1985) pioneering study, there have been many studies on (mis) use/ non-use of articles by l2 learners from article-less and article languages. the present study investigated how persian l2 learners of english produce and interpret english definite descriptions and demonstrative descriptions. it was assumed that definite and demonstrative descriptions share the same cen...