This paper revisits the debate over whether the technological changes in eighteenth-century England were complements to skilled workers, or whether they were substitutes, as believed by many. Using an exceptional and comprehensive set of evidence from tax records on apprenticeship indentures from all over Great Britain between 1710 and 1772 I find evidence consistent with the technology-skill c...

In this article, analyses are made of home health and skilled nursing facility (SNF) use for the period 1982-90 using Medicare records linked to data on community and institutional residents from the National Long-Term Care Surveys (NLTCSs) of 1982, 1984, and 1989. The combined survey and administrative data analyses are performed to ascertain how the chronic health and functional characteristi...

The seismic refraction technique provides a simplified characterization of relatively large volumes of the subsurface in 2-dimensional (distance and depth) profiles. Compression wave (p-wave) velocities, the typical measured geologic material parameter, are a function of the moduli of the various unsaturated material masses in the subsurface profile. In saturated media, p-wave velocities are in...

one of the key issues of migration concerns women’s migration. this article, examines the conditions of skilled immigrant women in ehran. qualitative method is used to collect the necessary data for this tudy. the research also conducts in-depth interview with 25 immigrate women residing in tehran. the results of the research show that migration decisions depend on multiple factors including la...