منابع مشابه
Overlapping Generations: The First Jubilee
Paul Samuelson’s (1958) overlapping generations model has turned 50. Seldom has so simple a model been so influential. Its “wow” factor, and the feeling of surprise at its originality and coolness have not paled with the years. The paper, in spite of its ripe age, still elicits wonder. Starting from the uncontroversial observation that “we live in a world where new generations are always coming...
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i hp; medical man who wishes to gain a clear idea of the broad foundations upon which modern medicine and surgery are based should read two great books which are almost twin classics; Rene Vallery Radot's Life of Pasteur" (English translation by Mrs. Devonshire), and Sir Rickman Godlee's "Lord Lister," the re-appearance of which in a third edition we cordially welcome. Both are finely written s...
متن کاملSilver Jubilee Publication-II
Geographic Information System (GIS) techniques are being increasingly and effectively used in morphometric analysis and groundwater potentiality mapping of drainage basin owing to its capabilities of manipulation, analysis, flexibility of experimentation and ability to extract topological attributes from various thematic maps, and to work as a unique tool for geospatial modelling. An attempt to...
متن کاملThe Sabbath and Jubilee Cycle
he two-invasion hypothesis suffers from numerous defects. When pressed with the demand for proof, its advocates admit that real evidence is lacking. Rather, its premise is a matter of interpretation and possibilities. An examination of the reasoning process and the interpretations of evidence used to support this second invasion hypothesis reveals that it has little merit. What are presumed as ...
متن کاملThe golden jubilee of vaccination against poliomyelitis.
Inactivated poliovirus vaccine (IPV), developed in the USA by Jonas Salk in the early 1950s, was field tested in 1954, and found to be safe and effective. The year 2004 marks the golden jubilee of this breakthrough. From 1955 IPV was used extensively in the US and polio incidence declined by more than 95 per cent. However, in 1962, when oral poliovirus vaccine (OPV) became available, the nation...
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ژورنال
عنوان ژورنال: Nature
سال: 1896
ISSN: 0028-0836,1476-4687
DOI: 10.1038/054173e0