This paper explores the extent to which temporary Mexican migrants upgrade their skills while working in the United States. In contrast to Lacuesta (2006), we find that labor market performance in Mexico is positively related to one’s accumulated migration experience in the United States. Self-selection of high-skilled individuals into migration does not drive this result. Surprisingly, while w...

The coupled motion of a closed non-circular grain boundary (GB) in a bicrystal, with both isotropic and anisotropic GB energies, is studied using the level set method. The kinetic relations, obtained within the framework of linear irreversible thermodynamics, govern the overall dynamics including normal motion (migration) of the GB, viscous sliding along the GB, and tangential motion of the gra...

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Orbits of known extrasolar planets that are located outside the tidal circular-ization regions of their parent stars are often substantially eccentric. By contrast, planetary orbits in our Solar System are approximately circular, reflecting planet formation within a nearly axisymmetric, circumsolar disk. We propose that or-bital eccentricities may be generated by divergent orbital migration of ...

Oman has made tremendous progress in the last four decades on the back of rising oil prices and this has led to substantial economic activity in oil, construction, industries and services sectors creating an unprecedented demand for labor ranging from professionals, technical experts, educators, highly skilled people in all vocations to low and semi-skilled people including cleaners, gardeners,...

Orbits of known extrasolar planets that are located outside the tidal circular-ization regions of their parent stars are often substantially eccentric. By contrast, planetary orbits in our Solar System are approximately circular, reflecting planet formation within a nearly axisymmetric, circumsolar disk. We propose that the remarkable elongations of extrasolar planetary orbits are a consequence...

Since the mid-1980s, hundreds of millions of Chinese rural laborers have left the countryside to work in towns and cities and it is projected that this number will grow. The current rural-urban migration tide in China may be one of history’s biggest labor movements, however, it has not been fully studied due to limited data availability. This paper uses the micro level data that cover the broad...

Migrant Labor Markets and the Welfare of Rural Households in the Developing World: Evidence from China In this paper, we examine the impact of reductions in barriers to migration on the consumption of households in rural China. We find that increased migration from rural villages leads to significant increases in consumption per capita, and that this effect is stronger for poorer households wit...

BACKGROUND To examine the effect of the natural antimicrobial peptide human β-defensin-3 (hBD-3), on the migration of a head and neck cancer cell line in vitro using microfabrication and soft-lithographic techniques. METHODS TR146 cancer cells were seeded in Petri dishes with microfabricated wells for cell migration assays. Total 54 cell islands were used of various shape and size and experim...

Throughout mnany less developed economies of the world, especially those of tropical Africa, a curious economic phenomenon is presently taking place. Despite the existence of positive marginal products in agriculture and significant levels of urban unemployment, rural-urban labor migration not only continues to exist, but indeed, appears to be accelerating. Conventional economic models with the...