abstract: country’s fiber optic network, as one of the most important communication infrastructures, is of high importance; therefore, ensuring security of the network and its data is essential. no remarkable research has been done on assessing security of the country’s fiber optic network. besides, according to an official statistics released by ertebatat zirsakht company, unwanted disconnec...

Doubtlessly, poverty is one of the greatest concerns of human societies and economic systems. Obviously, if economics and economists can not produce a proper analysis of such a bitter phenomenon and provide a solution to fight against it, their knowledge will be in vain. In Fact if productivity-oriented economists are merely able to attribute poverty to low productivity of individuals, they hav...

with the growth of more humanistic approaches towards teaching foreign languages, more emphasis has been put on learners’ feelings, emotions and individual differences. one of the issues in teaching and learning english as a foreign language is demotivation. the purpose of this study was to investigate the relationship between the components of language learning strategies, optimism, duration o...

Mainstream economics, while opposing philosophical and methodological issues, is based on its own specific methodological principles. In fact, all the scientific endeavors undertaken in the framework of this intellectual tradition with the aim of getting access to recognition and knowledge are acceptable merely within the boundaries of its own methodology yet the question arises whether the met...