infrastructure. Theory links the two concepts by positing that agglomeration economies exist when firms in an urban area share a … efficient operation of cities by facilitating business activities and improving worker productivity. The literature has devoted … productivity show positive, but in some cases statistically insignificant, effects of public capital stock on productivity. Most of …

increased concern for forest resources, have enabled increases in productivity that have largely offset growth in demand. While … the record has not been quite as good in the developing countries, productivity growth and a slowing in the rate of …

&D attribution, the nature and length of the lags between research spending and its impacts on productivity, and various dimensions …