日本人为何长寿

世界卫生组织日前发表的2006年《世界卫生报告》显示，日本人均寿命为82岁，保持着世界第一长寿国的地位。这一报告还显示，中国男性平均寿命70岁，女性74岁，人均寿命为72岁。     

没有军队的国家

圣马力诺共和国是建立共和体制最早的国家，位于欧洲的亚平宁半岛，四周被意大利国土包围着，面积61平方千米，人口2．3万。圣马力诺历来不设军队编制，就连消防队也没有。     

数字

工信部5月24日发布信息显示，今年前4月，全国移动电话用户累计净增4138．6万户，突破9亿户，达到90038．9万户。     

数字舆情

正网店就业"网络创业就业统计和社保研究项目"调查数据显示,全国网店创业就业总人数约为962.47万人。其中,个人网店占96.3%,带动网络创业就业人数达600万人。平均每个网店缺工2.3人,缺工总量约为110万人。30.7%的网店未来一年有招工计划。在接受调查的个人网店中,88.5%的网店     

日本妇女的就业现状及发展趋势

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。     

从数字看地区

正山东省地税局数据显示,截至2014年3月31日,全省共受理年所得12万元以上个人自行纳税申报252567人,应纳税额93亿元,补缴税款17229万元,应纳税额占2013年个人所得税收入的35.63%。从地从收入区间看(年收入)自行     

数字

3.6％ 国家统计局10月21发布前三季度国民经济运行数据,数据显示,前三季度GDP同比增10．6％,CPI同比涨2.9％。9月份CPI同比涨3.6%,涨幅创23个月新高。     

数字

中央组织部的最新党内统计数据显示,截至2011年年底,中国共产党党员总数达8260．2万名,比上年增加2333万名,增长29％;党的基层组织总数达4027万个,比上年增加135万个,增长35％。     

从数字看中国

正"十一"黄金周全国旅游收入2453亿元,山东杭州人气最旺10月8日,中国国家旅游局发布统计数据显示,2014年国庆节长假7天时间里,中国出游4.75亿人次,比2013年国庆节增长10.9%;实现旅游收入2453亿元,增长15.7%。根据统计,北京、天津等39个重点旅游城市,接待游客1.48亿人次,其中过夜游客为2719万人次,一日游游客为1.21亿人次。纳入全国假日旅游统计     

数字

2．3％ 美国商务部7月12日公布的数据显示，美国对外商品和服务贸易逆差比前一个月增加2．3％，约为600．4亿美元，其主要原因是能源进口额增幅较大。     

DETERMINING THE OPTIMAL NUMBER OF BID SOLICITATIONS1

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.     

MULTIPERIOD SEARCH MODELS FOR AN UNKNOWN NUMBER OF VALUABLE OBJECTS

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.     

AN ANALYSIS OF PURCHASING COSTS AS THE NUMBER OF PRODUCTS‘ COMPONENTS IS REDUCED

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.