This paper surveys the empirical literature on human capital and productivity and summarizes the results of my own work on the subject. On balance, the available evidence suggests that investment in education has a positive, significant and sizable effect on productivity growth. According to my estimates, moreover, the social returns to investment in human capital are higher than those on physi...

We consider a Rebelo (1991) type model of endogenous growth in which the environmental quality positively affects the rate of human capital accumulation and the environmental quality itself is positively affected by human capital accumulation and is negatively affected by physical capital accumulation. We analyse the effects of taxation on the steady state equilibrium growth rate in this model....

This paper examines how professional service firms have used a combination of clan and bureaucratic control techniques to manage change over a 100-year period. Both sets of controls have been present throughout, but the mix between the two has altered to reflect changes in the broader institutional environment. These shifts create new contradictions that eventually undermine their very success....

venture capital, innovation models, research management, corporate research After carefully evaluating a variety of mechanisms to leverage the world class Venture Capital (VC) firms in the vicinity of Hewlett-Packard's Silicon Valley headquarters, Hewlett-Packard Labs (hpl.hp.com) and the venture capital firm Foundation Capital (www.foundationcapital.com) entered into a strategic relationship. ...

the aim of this study is to investigate the share of total factor productivity growth (tfpg), labor force growth and physical capital growth on the value added growth of non-oil sector by applying the cob-douglass production function during the third, fourth and fifth development plans before the islamic revolution of iran (1342-1356), and during the first, second, third and forth economic, soc...

We build an infinite-horizon dynamic deterministic general equilibrium model with imperfect markets (because of borrowing constraints), in which heterogeneous agents invest in capital or/and financial asset, and consume. There is a representative firm who maximizes its profit. Firstly, the existence of intertemporal equilibrium is proved even if aggregate capital is not uniformly bounded. Secon...

this paper aimed to investigate the relationship between components of social capital (security, trust, social norms, social networks and participation in social activities) and physical activity participation among the adolescent students in yazd city. the statistical population of the study included adolescent students (14-17 years old) from yazd city. 382 adolescents were randomly selected t...

BACKGROUND To investigate the association between social capital and quality of life among type 2 diabetes patients in Anhui province, China. METHODS In a cross-sectional study, 436 adults with type 2 diabetes were interviewed. The two domains of Quality of life, physical component summary (PCS) and mental component summary (MCS), were measured using the Short-Form Health Survey (SF-36). A mo...

Regional output per worker has converged across Chinese provinces in 19791989. The estimated rate of convergence is 2.2 percent. This rate of convergence can be explained by neoclassical growth model conditional on assumptions about factor mobility and production elasticities. My empirical results show that capital mobility has been high across Chinese provinces and that the production elastici...