共查询到14条相似文献,搜索用时 15 毫秒
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本文就日本实施《男女雇佣机会均等法》后以及近年来日本社会的少生子化、高龄化、以及核家族化的进展中的日本女性就业、再就业的社会现状、问题点及发展趋势进行了探讨。 相似文献
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一见到长寿这两个字,很多人的眼睛肯定会为之一亮。大部分人都觉得,那些活到100多岁仍然精神矍铄的老人,身上肯定有着不为人知的秘密。其中,他们吃的是什么食物尤为重要。如今,有一个人花了整整25年的时间,替大家走遍全球25个国家,寻访61个长寿地区的饮食秘密。他就是日本著名的长寿学家、世界卫生组织循环器官疾病专业委员家森幸男博士。近日,他在最新的中文版《健康长寿饮食指南》一书中,以科学的态度披露了长寿食物的秘密,被称为有史以来最权威的长寿饮食调查。 相似文献
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David L. Rados 《决策科学》1972,3(3):32-40
This paper analyzes three simple search models, in which a buyer with full knowledge of the distribution of market prices searches for a low price. He continues his search until the cost of further search exceeds the expected savings resulting from the further search. The implications of these models are also discussed. 相似文献
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Hanan Luss 《决策科学》1975,6(3):430-438
In this paper we examine multiperiod search models for cases in which the number of valuable objects is unknown. The objective is to maximize the expected total returns during the planning horizon, subject to an effort constraint. Using a Bayesian approach, we examine the model for three different priors for the number of valuable objects, and we show that the different priors (binomial, Poisson and negative binomial) lead to such conceptually different results as adaptive and nonadaptive optimal policies. The models can be applied to many areas including mineral explorations, marketing promotion activities and intelligence information. 相似文献
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Product design efforts in recent years have focused on standardization and simplification of the product structure. It has been widely argued that savings, tangible and intangible, can be realized by simplifying the product design. In this study, we examine this belief and show that other issues like flexibility of process and design are important as well. We demonstrate that having process flexibility, e.g., of producing a product in two different ways, using two different product structures (as opposed to one), is advantageous with respect to components purchasing costs. This result is in contrast with the notion of standardization since the variety of components in the flexible design is increased. Properties of savings in purchasing costs associated with the use of this flexible design are provided. 相似文献