نتایج جستجو برای: o33
تعداد نتایج: 436 فیلتر نتایج به سال:
فناوری اطلاعات و ارتباطات (ICT) و رشد روزافزون آن در دهههای اخیر به رشد اقتصادی و افزایش بهرهوری در برخی کشورها خصوصاً کشورهای توسعهیافته انجامیده است. این موضوع باعث طرح این سؤال میشود که آیا رشد اقتصادی باعث توسعة فناوری اطلاعات و ارتباطات (ICT) شده است و یا بهعکس. از این رو در این مقاله به بررسی رابطة علّیت میان سرمایهگذاری ICT و رشد بهرهوری نیروی کار براساس مدلهای پانل پویا و با استف...
Studies have found the impact of foreign direct investments (FDI) on productivity growth to be firm-industry-host economy specific. However, the impact of FDI may differ with the existing market conditions in the economy and also with respect to the source of the FDI. The paper examines the impact of FDI on productivity growth of the Indian industry in the period of low market demand conditions...
How does technological progress occur? Is the nature of innovation stable over time? We shed new light on these questions through a mixture of empirics and theory. We begin with an empirical analysis of patents granted by the United States Patent and Trademark Offi ce. This analysis reveals several striking facts that emphasize the increasing importance of novel combinations of technologies for...
We analyze the implications of entrepreneurial spawning for a variety of firm characteristics such as size, focus, profitability, and innovativeness. We examine the dynamics of spawning over time. Our model accounts for much of the empirical evidence relating to the relation between spawning and firm characteristics. Firms that have higher patent quality spawn more, as do firms that have higher...
We evaluate whether hospital adoption of electronic medical records (EMRs) leads to increases in billing where financial gains are large or where hassle costs of complete coding are low. The 2007 Medicare payment reform varied both financial incentives and hassle costs of coding. We find no significant impact of financial incentives on billing levels, inconsistent with bill inflation. However, ...
We investigate technological change with regard to CO2 emissions by passenger cars, using a Free Disposal Hull methodology to estimate technological frontiers. We have a sample of cars available in the UK market in the period 2000 – 2007. Our results show that the rates of technological change (frontier movement) and diffusion (distance to frontier at the car brand level) differ substantial bet...
We exploit historical data on planned highways, railroads, and exploration routes as sources of exogenous variation, in order to estimate the effect of interstate highways on regional innovation: a 10% increase in a region?s stock of highways causes a 1.7% increase in regional patenting over a five-year period. In terms of the mechanism, we report evidence that roads facilitate local knowledge ...
We reconcile trade theory with plant-level export behavior, extending the Ricardian model to accommodate many countries, geographic barriers, and imperfect competition. Our model captures qualitatively basic facts about U.S. plants: (i) productivity dispersion, (ii) higher productivity among exporters, (iii) the small fraction who export, (iv) the small fraction earned from exports among export...
We use a randomized control trial to measure how the free distribution of modern inputs for maize production affects their adoption in the subsequent season. Information collected through sales workshops where modern inputs were sold revealed that the average purchase quantity of free-input recipients was much higher than that of non-recipients; that of the neighbors of recipients fell in-betwe...
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