A review of research examining the relationship of auditory-visual integration and reading achievement is presented. The techniques of meta-analysis were used to integrate statistically the findings from 31 studies. A total of 146 correlations were collected and aggregated across assessment procedures, reading skills, grade levels, and subject characteristics. Also, partial correlations and a s...

foreign direct investment (fdi) plays a crucial role in the economic literature, especially in developing countries. it is also an important factor for policy makers to analyze the relation between foreign direct investment and other important economic variables. one of these variables is export which is always mentioned in iran's economic development programs. in this study, the relation betwe...

this paper investigates the relationship between inflation and inflation uncertainty for the period of 1990-2009 by using monthly data in the iranian economy. the results of a two-step procedure such as granger causality test which uses generated variables from the first stage as regressors in the second stage, suggests a positive relation between the mean and the variance of inflation. however...

a basic subject in economy is change in growth of population and it’s link to ‎other variables. if growth in population is consistent with other economic ‎circumstances, it would lead to economic growth, otherwise it would be ‎problematic. by using okun's law and population structures, this paper is ‎analysis the case for iran for 1974-2010. predictions are related to 2025 ‎horizon. the re...

although precipitation is the most important factor which effects rangeland production, but there is little information on the relationship between production and the interactions of climatic factors and specially drought indices. .in this research, the relation between production and climatic factors of rainfall, temperature, evapo- transpiration, and as well as drought indices of standardized...