صدرایی جواهری, احمد

[ 1 ] - برآورد سری زمانی شاخص دانش در اقتصاد ایران با روش لوینسون و پترین

Regarding to studies in different countries the research and development (R&D) play a major role in economy growth. Investment in R&D increase level of knowledge, and we have increase in production efficiency by knowledge increasing, after that economic growth will improve by productivity channel. Many studies exist on the R&D but in any of them not used the same variable for this indicator. Th...