We propose and estimate a model in which changes in the demographic composition of the labor force may affect the returns to labor market experience. We consider workers as providing two distinct productive services – physical effort, or “labor,” and services of the skill accumulated with labor market experience, or “experience.” The key element in the model is the aggregate production function...

The Role of Income and Immigration Policies in Attracting International Migrants This paper makes two contributions to the literature on the determinants of international migration flows. First, we compile a new dataset on annual bilateral migration flows covering 15 OECD destination countries and 120 sending countries for the period 1980-2006. We also collect data on time-varying immigration p...

Arguably the most important development in recent decades in US factor markets is the decline in the relative wage of the unskilled. By contrast, in Europe it is undoubtedly the rise and persistence of unemployment. Technology has been identified as a key reason for the rising US wage inequality, while labor market rigidities are often cited as a key reason for European unemployment. This paper...

The paper studies the effects of cross-country differences in human capital formation on income distributions. Our overlapping generations economy has the following features: (1) consumers are heterogenous with respect to ability and parental human capital; (2) intergenerational transfers take place via parental education and, public investments in education Þnanced by taxes (possibly, with a l...

Although the technology of fuel injection in motorcycles has reached ports and direct injection, with carburetors are still used. In this research, carburetor was modified by adding a swirling vane. This study is intended to provide an explanation regarding engine performance which includes torque, power, mileage, emissions, oil temperature. The begins review shape flow characteristics vane bas...

Se reportan los resultados del análisis de las arqueofaunas sitio Loma l´Ántigo valle Cajón (Catamarca). es un Período Desarrollos Regionales con patrón asentamiento aglomerado y emplazado sobre la cima aplanada una loma. La fauna analizada proviene nueve sondeos excavación en área tres recintos (Estructuras E25, E93 E66). Camelidae familia más frecuente el conjuntos, registrándose especímenes ...

What are the prospects for long-run economic growth? One prominent line of thinking is trend toward stagnation. Stagnationism has a long history in economics, beginning prominently with Malthus and occasionally surfacing different guises. Prominent themes here following: Will growth slow perhaps even reverse under weight resource depletion? overpopulation diminishing returns lower living standa...

Neurogenesis was studied in the medial preoptic area of the guinea pig by the method of tritiated thymidine autoradiography. Eight cytoarchitectonic divisions were examined, 4 of which display sexual dimorphism and 4 that do not. Neurogenesis in the nonsexually dimorphic divisions was found to end at embryonic day (E) 27, while in each of the sexually dimorphic divisions neurogenesis continued ...