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Vector Fields on Manifolds
This paper is a contribution to the topological study of vector fields on manifolds. In particular we shall be concerned with the problems of exist ence of r linearly independent vector fields. For r = 1 the classical result of H. Hopf asserts that the vanishing of the Euler characteristic is the necessary and sufficient condition, and our results will give partial extens ions of Hopf's theorem to the case r > 1. Arecent article by E. Thomas [10] gives a good survey of work in this general area. Our approach to these problems is based on the index theory of elliptic differential operators and is therefore rather different from the standard topological approach. Briefly speaking, what we do i...
An Ottoman Mentality
In his huge travel account, Evliya Çelebi provides materials for getting at Ottoman perceptions of the world, not only in areas like geography, topography, administration, urban institutions, and social and economic systems, but also in such domains as religion, folklore, sexual relations, dream interpretation, and conceptions of the self. In six chapters the author examines: Evliya’s treatment of Istanbul and Cairo as the two capital cities of the Ottoman world; his geographical horizons and notions of tolerance; his attitudes toward government, justice and specific Ottoman institutions; his social status as gentleman, character type as dervish, office as caller-to-prayer and avocation as traveller; his use of various narrative styles; and his relation with his audience in the two registers of persuasion and amusement. An Afterword situates Evliya in relation to other intellectual trends in the Ottoman world of the seventeenth century.
Plasmachemie — ein aktuelles Teilgebiet der präparativen Chemie. Bildung und Eigenschaften von Carbosilanen
Plasma chemistry is realized as the universality of reactions occurring under plasma conditions. The topic discussed in this paper is confined to the application of plasmas for preparative chemistry purposes. Plasmachemical processes are estimated promising for the synthesis of endothermic, at room temperature metastable compounds, for the generation of new species by recombination of highly excited intermediates, or for enhancement of the efficiency of "normal" reactions by temperature increase. A variety of plasmachemical reactions, some of intense technical interest, are quoted, following an arbitrary classification according to the experimen tal methods: [1] Are discharges, especially pl...
Die öffentlichen Ausgaben als Elemente einer konjunkturpolitisch orientierten Haushaltsführung. Die Einheit der Unternehmensführung bei dezentralen Verantwortungsbereichen
In the scope of a financial policy based on economic requirements, the task of stabilizing the economic process by regulation of the total demand has to an ever larger extent been incumbent on public expenditure. While extensive studies exist which thoroughly analyze the use of public expendit ures as stabilizing elements and their effect on the economic situation, the political and institutional as well as the technical and economical bases of the variations of expenditure have been neglected up to now. In order to be able to correctly evaluate individual government expenditures in their quality as instruments with which to influence the economic trend, it is therefore necessary to determin...
