نتایج جستجو برای: coupon collection problem
تعداد نتایج: 1050822 فیلتر نتایج به سال:
BACKGROUND Finding ways to improve the cervical cancer screening rates among young women has been seen as a critical national health problem in many countries, including Japan. The aim of the present study was to evaluate the effects of a free-coupon program for cervical cancer screening conducted by a local government under financial support from the Japanese national government. METHODS The...
We consider the classical coupon collector’s problem in which each new coupon collected is type i with probability pi; P i1⁄41 n pi1⁄41. We derive some formulas concerning N, the number of coupons needed to have a complete set of at least one of each type, that are computationally useful when n is not too large. We also present efficient simulation procedures for determining P(N . k), as well a...
We extend the classical coupon collector’s problem to one in which two collectors are simultaneously and independently seeking collections of d coupons. We find, in finite terms, the probability that the two collectors finish at the same trial, and we find, using the methods of Gessel-Viennot, the probability that the game has the following “ballotlike” character: the two collectors are tied wi...
A locally surjective homomorphism from a graph G to H is called an -role colouring of . Deciding the existence such with | = k known be NP -hard even under substantial restrictions on input We study family hereditary classes for which problem can solved efficiently. Our main result first boundary class this problem; that is, minimal obstruction solving efficiently in finitely defined class. als...
Purpose – The purpose of this paper is to examine how consumers’ value evaluation and personality factors influence consumers’ intention to adopt mobile coupon (M-coupon) applications in China. The moderating effect of gender on the relationships between personality factors and consumers’ adoption intention is also tested. Design/methodology/approach – This study conducted a survey to collect d...
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