Measles is the largest single killing infection of children in the world, and it is likely that its toll is heightened by the occurrence of a serious delayed effect of early infection. Variations in measles mortality, and in the seriousness of infection, have often been explained in terms of nutritional factors, but intercountry comparisons within the Third World fail to bear this out. In this ...

In this paper, which is a sequel of PSV], we develop a completely elementary approach to calculations in Chevalley groups G = G((; R) of types = E 6 and E 7 over a commutative ring R using only the weight diagrams (alias, crystal graphs) of their minimal modules. After an elementary construction of a crystal base we explicitly describe action of root subgroups and of the extended Weyl group, mu...

The variational method with constraints recently developed by Verkley and Gerkema to describe maximumentropy atmospheric profiles is generalized to ideal gases but with temperature-dependent specific heats. In so doing, an extended and non standard potential temperature is introduced that is well suited for tackling the problem under consideration. This new formalism is successfully applied to ...

Catalonia has been one of the most commercialized and industrialized regions of Spain during the twentieth century. Home of the first industrial revolution during the nineteenth century, it started to adopt technologies and organizational structures of the Second Technological Revolution by the end of that period and the first third of the twentieth century. During the period 1890-1935 Catalan ...