منابع مشابه
The Evolution of Utility, Or Why Is Sex Fun?
In his 1998 book ”Why Is Sex Fun?” [2] Jared Diamond assumed he was asking a rhetorical question. How could it not be fun for those at the tail end of billions of years of evolution? In the meantime, however, an emerging subspecies of economists have been arguing that Diamond’s question needs to be taken seriously: sex is fun only by evolutionary accident, and not because it is an action promot...
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INTRODUCTION With nonscientific, religious, or magic arguments, sexual activity has been regarded in the past as dangerous to health. This opinion is now rejected, and intercourse is generally considered healthy. However, while some aspects of the equation "more sex equals more health" have been demonstrated, others still need robust data for confirmation. METHODS Four scientists (an endocrin...
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T he centrosome is more than a hub for microtubules and an anchor for the mitotic spindle. The structure also helps stem cells recall their orientation so they can divide along the right axis, as Jens Januschke and Cayetano Gonzalez show (1). Neuroblasts are stem cells in the brains of larval Drosophila. Each round of division yields another neuroblast and a much smaller ganglion mother cell (G...
متن کاملHit - and - Run is Fast and Fun ∗
The hit-and-run algorithm is one of the fastest known methods to generate a random point in a high dimensional convex set. In this paper we study a natural extension of the hit-and-run algorithm to sampling from a logconcave distribution in n dimensions. After appropriate preprocessing, hit-and-run produces a point from approximately the right distribution in amortized time O∗(n3).
متن کاملAbstracts Fun is in doing together
Fun is in doing together Anu Mäkelä, Pia Kurimo, Katja Battarbee Helsinki University of Technology P.O. Box 9555, FIN-02015 HUT
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ژورنال
عنوان ژورنال: BMJ
سال: 2008
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.39479.511944.3a