the purpose of this study was to investigate the effect of task repetition on accuracy of iranian efl learners ’speaking ability. in order to achieve this purpose, a null hypothesis was developed: there is no statistically significant difference between accuracy speaking ability in iranian efl learners by use of task repetition. ; of course i should mention that, beside this null hypothesis, an...

abstract global financial crisis has created too many problems in relations among governments. among these problems, the issue of global monetary management, more than every time in the past four decades, has been moved in the center of international economic attentions. a problem which is specially known with the monetary hostility between united states and public republic of china. where ar...

The present study examines the nonlinear dynamic relation among the factors affecting the export of Iran handmade carpets between 1352- 95, and focuses on the macroeconomic variables. For this purpose, the Nonlinear Autoregressive Distributed Lag (NARDL) Technique is used. The results indicate that there is a nonlinear short-run and long-run relation among the variables of the model. Among the ...

data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...

Introduction: Any rise in health expenditure is the main concern of householders and policymakers. A few studies have been conducted on assessing the determinants of expenditures and environmental quality from a macroeconomic point of view. This paper aimed to investigate the relationship between health expenditure and environmental quality in more than 114 developing countries between 1995 and...

abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...