In this paper, we estimate the profile of productivity by age through the estimation of production functions. ‘Productivity’ is defined as the average contribution of age groups to the productivity of firms. Our data are a matched employer-employee dataset covering about 70,000 firms in the late 1990’s in France. We find that productivity increases with age until age 40 and then remains stable ...

In the above, it is understood that R is a commutative ring with 1. An Rlinear form is an expression Cy=o AiXi, where n ~0, AieR, An algebra d of Rlinear forms is a set of such forms closed under substitutions: if f(xe, . ..,xk) = = Ci PiXi and gi(Xe . . . . x,) = Cj AjXj are forms in d then h(x, . .., x,,) = =f(&l(xo9 * -9 x,x * ‘-9 gdxg, . . ., x,)) = Cj (C i Uilj)Xj is a form in & A form C 1...

The dramatic growth of U.S. wage inequality since the early 1970s has been the subject of intense controversy both among economists and between economists and the broader public. To many people-including a few economists (e.g. Leamer 1995)-the explanation of that increased dispersion seems obvious: it is the result of globalization, and specifically of the growing imports of labor-intensive man...

A possible measurement of the top quark mass by an energy scan of the tf threshold region at e+ecolliders of fi = 250-500 GeV is discussed. With an integrated luminosity of 1 fb-’ devoted to the energy scan, a top quark msss of about 150 GeV can be determined with an accuracy of M 0.3 GeV, with a comparable systematic uncertainty arising from the few % errors in the cy, measurement at LEP-I. Th...

The paper presents a theory of the industrial transformation amongst sectors along the balanced growth path equilibrium, using endogenous growth theory. Allowing only a slight upward trend in the productivity of the human capital sector, combined with ascending degrees of human capital shares of sectoral output, in say, agriculture, manufacturing and services, output gradually shifts relatively...

New technologies are critical to enhancing agricultural productivity and reducing poverty in many developing countries. While public-sector investment in research has historically driven technological change in agriculture, recent trends suggest that the public sector’s role may not be as significant in the future. There is much optimism about the private sector’s capacity to deliver new techno...