The effects of siblings on the migration of women in two rural areas of Belgium and the Netherlands, 1829-1940

This study explores the extent to which the presence and activities of siblings shaped the chances of women migrating to rural and urban areas in two rural areas of Belgium and the Netherlands during the second half of the nineteenth and first decades of the twentieth century. Shared-frailty Cox proportional hazard analyses of longitudinal data from historical population registers show that siblings exerted an additive impact on women's migration, independently of temporal and household characteristics. Just how siblings influenced women's migration depended on regional modes of production and on employment opportunities. In the Zeeland region, sisters channelled each other into service positions. In the Pays de Herve, where men and women found industrial work in the Walloon cities, women were as much influenced by their brothers' activities. Evidence is found for two mechanisms explaining the effects of siblings: micro-economic notions of joint-household decision-making and social capital theory

Performance study of a power law star body

The performance of a power law star body, designed for low drag, is calculated numerically and verified experimentally. The methodology of the shape design is presented along with a comparison to other forebody shapes and an evaluation of scaling effects. A star body is then constructed and tested in the reflected shock tunnel, T4, at the University of Queensland. Various test conditions were used to determine both the on design and off design performance of the star body. These results are then compared to tests done on a cone of equivalent volume and length. The resulting star body shape is shown to have 20% less drag than the equivalent cone at a Mach number of 6.4 and a Re = 1.5 x 10

Performance study of a power law starbody

The performance of a power law starbody, designed for low drag, was calculated numerically and verified experimentally. The methodology of the design shape is presented along with a comparison to other forebody shapes and an evaluation of scaling effects. A starbody was constructed and tested in the University of Queensland reflected shock tunnel, T4, Various test conditions were used to determine both the on-design and off-design performance of the starbody, These results are compared with those of tests done on a cone of equivalent volume and length. The resulting starbody shape is shown to have 20% less drag than the equivalent cone at a Mach number of 6.4 and an Re = 1.5 x 10(6)