نتایج جستجو برای: dr kin yin cheung
تعداد نتایج: 89969 فیلتر نتایج به سال:
Alarm calling in sciurid rodents is often explained by inclusive fitness benefits that callers accrue. Inclusive fitness arguments imply that indirect fitness plays an important role in the evolution and maintenance of alarm calling. A more parsimonious hypothesis is that animals alarm call to increase their direct fitness by warning their offspring. Group-living animals are related to each oth...
ON SWITCHING DIFFUSIONS: THEFEYNMAN-KAC FORMULA ANDNEAR-OPTIMAL CONTROLSbyNICHOLAS BARANAugust 2014Advisor: Dr. George YinMajor: MathematicsDegree: Doctor of Philosophy We consider diffusions in two different contexts. First, we consider the so-calledFeynman-Kac formula(s) for switching diffusions. These formulas provide stochasticrepresentations for ...
Hamilton (1) argued that prior to his theory of inclusive fitness, nobody had sought evidence for kin discrimination in animals because nepotism was an embarrassment to human society. Why did it take so long after Hamilton’s theory was proposed, however, to search for kin discrimination in simpler organisms, like bacteria? Perhaps we were prideful that we, as animals, have the unique ability to...
Sex differences in the salience and meaning of kin relations for contemporary Canadians were examined in two studies. In study 1, 24 opposite-sex adult sibling pairs were asked to reconstruct their kindreds as fully as possible, following a computerized menu. Sisters almost invariably recalled more relatives than did their brothers, especially living and matrilateral relatives. In study 2, a qu...
Physically meaningful regions can be modeled by regular open semianalytic sets with bounded boundaries. These sets are named as Yin sets and they form a topological space called the Yin space. Due to the regularity, the Yin sets can be represented by a collection of particular sets of oriented Jordan curves; this collection is referred to as the Jordan space. After defining a meet operation, a ...
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