نرخ بازدهي فعاليت هاي تحقيق وتوسعه و سرمايه گذاري فيزيكي در اقتصاد ايران

Rate of returns expenditure research and development and physical investment in the Economic of Iran

تيوريهاي اخير رشد اقتصادي بطور مرسوم جهت گيريهاي ابداع را در واكنش به انگيزه هاي اقتصادي به عنوان موتور اصلي پيشرفت فناوري و رشد اقتصادي مي‌دانند. اين مطالعه به ارزيابي نرخ بازده سرمايه گذاري فيزيكي و سرمايه گذاري در فعاليت هاي تحقيق وتوسعه در اقتصاد ايران طي دوره 1388-1347مي‌پردازد. نتايج دلالت مي كند نيروي كار، سرمايه گذاري فيزيكي و سرمايه گذاري در فعاليت هاي تحقيق وتوسعه اثر مهمي بر رشد اقتصادي ايران دارند. هم چنين نتايج تخمين پيشنهاد مي‌كند نرخ بازده فعاليت هاي تحقيق وتوسعه چندين برابر نرخ بازده سرمايه گذاري فيزيكي است. نتايج بيانگر آنكه علي رغم بالاتر بودن ضريب سرمايه گذاري فيزيكي نسبت به سرمايه گذاري در فعاليت هاي تحقيق وتوسعه، ميانگين نرخ بازده سرمايه گذاري فيزيكي و سرمايه گذاري در فعاليت هاي تحقيق وتوسعه در كوتاه مدت به ترتيب 0.47 و 3.95 بوده است و هم چنين ميانگين نرخ بازده سرمايه گذاري فيزيكي و سرمايه گذاري در فعاليت‌هاي تحقيق وتوسعه در بلندمدت به ترتيب 0.84 و 66.2 بوده است.

Recent theories of economic growth treat commercially oriented innovation in response to economic incentives as a major engine of technological progress and Economic growth. Therefore this study tries to determine rate of return of Physical investment and R&D expenditure on economic Iran in during 1968-2009. Finding provided empirical evidence that Labor, Physical investment and R&D expenditure have important and significant effects on economic growth performance. Our estimates suggest that the coefficient of physical investment on economic growth is larger than the of R&D expenditure. As compared with impact of physical capital, the impact of R&D investment on economic growth in Iran is not as strong as, through the lower estimated elasticity values. These results indicate rate of return R&D investment in economic of Iran is much higher than those of physical investment which explains the relatively active R&D investment as compared with physical investment during this period. The short run of internal the average rate of return of physical investment and R&D investment estimated are .47 and 3.95 respectively. The long run of internal moreover the average rate of return of physical investment and R&D investments estimated are.84 and 66.2 respectively