منابع مشابه
Natural History of Man
The Ethnological Society have, from the first, put forward as their motto, and the recommendation of their claim to support, this assertion of Cuvier: "In every region of the earth man has, almost universally, been regarded by us with indifference. It is difficult to account for such neglect, but it is no less a misfortune to be deplored.' Much has indeed been done towards the vindication of th...
متن کاملOn the Failure of 'natural Selection' in the Case of Man
EVERY 01l.TE now is familiar with the Darwinian theory of the origin of species, at least in its main principles and outlines: and nearly all men qualified to form an opinion are convinced of its substantial truth. That theory explains how races of animals vary as ages roll on, so as to adapt themselves to the changing external conditions which those ages bring about. At every given moment, in ...
متن کاملevidence of adverse selection in irans health insurance market
در این تحقیق به مطالعه وجود انتخاب نامساعد(کژ گزینی) در بازار بیمه درمان تکمیلی ایران پرداخته شده است. داده های مورد نیاز توسط پرسشنامه و به روش نمونه گیری خوشه ای جمع آوری شده است. پرسشنامه ها در میان افراد شاغل ساکن شهر تهران توریع شد. در این تحقیق با استفاده از تخمین دو مدل لجستیک و به دست آوردن ضریب همبستگی میان تقاضای بیمه درمان تکمیلی و رخداد خسارت به بررسی موضوع مورد نظر پرداخته شده است....
15 صفحه اولAtherosclerosis in man: natural history and effects.
The term natural history is often used as an excuse for vague discursive accounts of biological matters; nothing could be less desirable in a subject like atherosclerosis where confusions of definition have for long hindered progress. I propose to try and present a concise and precise account of the natural history and effects of this disease in man and to indicate some of the main debatable po...
متن کاملNatural selection
The time-scale of evolution Think of the 3.5 billion years that makes the history of life on earth as stretching for a single year. On the first of January, there is nothing more than primitive bacteria, and this remains the case for the next eight months. Multicellular eukaryotic life appears in early September, vertebrates invade the land at the beginning of December and dinosaurs become exti...
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ژورنال
عنوان ژورنال: Nature
سال: 1912
ISSN: 0028-0836,1476-4687
DOI: 10.1038/088361b0