娜塔莉——打破常规

还记得《这个杀手不太冷》里面那个抱着一盆植物跟在杀手雷昂后面的娃娃头女孩吗?娜塔莉·波曼12岁的时候就让我们见识了她非凡的演技。而这位出色的童星,并没有因为成了炙手可热的明星而立刻踏入演艺圈,却意外地在哈佛大学完成了自己的心理学专业。这个聪明的女孩总是给自己作出出乎意料的选择。     

Measuring the economic impact of the British library

Assessing the British Library's contribution to the national economy is a complex matter, requiring consideration of a number of different dimensions. First, the value added by the Library takes many forms—economic, cultural, social and intellectual. Second, the British Library adds value both to those who use our products and services directly, and to the wider UK population who benefit indirectly from the Library's existence and the services it provides. Traditionally, attempts to assess these benefits have taken the form of qualitative case studies—telling good stories, but failing to provide a comprehensive evaluation. But now a technique supported by the Nobel Prize winning economists, Kenneth Arrow and Robert Solow, permits a coherent quantitative evaluation of the total benefit to the nation of publicly funded institutions and programmes. Recognising the value of this technique, the British Library commissioned a groundbreaking research study to estimate the impact of the Library on the UK economy. The study demonstrates that the Library generates value of around 4.4 times the level of its annual public funding of £83m. To the best of our knowledge, this study represents the first time the ‘Contingent Valuation’ technique has been used to derive a figure for the overall economic impact of a national or major research library.     

General Works on Mass Communications

Russel B. Nye's The Unembarrassed Muse: The Popular Arts in America (Dial Press, $12.50)

Otto Friedrich's Decline and Fall (Harpor & Row, $10.00)

“The Sociology of Mass Media Communicators,” The Sociological Review Monograph No. 13 (University of Keele, Staffordshire, England, January 1969, $4.60 including air mail costs)

Audio Visual Marketplace: A Multimedia Guide (Bowker, $12.25)

Jerry Della Femina's From Those Wonderful Folks Who Gave You Pearl Harbor (Simon and Schuster, $6.50)     

Comparison of 1 and 2 days per week of strength training in children

The purpose of this study was to compare the effects of 1 and 2 days per week of strength training on upper body strength, lower body strength, and motor performance ability in children. Twenty-one girls and 34 boys between the ages of 7.1 and 12.3 years volunteered to participate in this study. Participants strength trained either once per week (n = 22) or twice per week (n = 20) for 8 weeks at a community-based youth fitness center. Each training session consisted of a single set of 10-15 repetitions on 12 exercises using child-size weight machines. Thirteen children who did not strength train served as age-matched controls. One repetition maximum (1RM) strength on the chest press and leg press, handgrip strength, long jump, vertical jump, and flexibility were assessed at baseline and posttraining. Only participants who strength trained twice per week made significantly greater gains in 1RM chest press strength, compared to the control group (11.5 and 4.4% respectively, p < .05). Participants who trained once and twice per week made gains in 1RM leg press strength (14.2 and 24.7%, respectively) that were significantly greater than control group gains (2.4%). On average, participants who strength trained once per week achieved 67% of the 1RM strength gains. No significant differences between groups were observed on other outcome measures. These findings support the concept that muscular strength can be improved during the childhood years and favor a training frequency of twice per week for children participating in an introductory strength training program.     

基于服务的开放数字仓储架构 ——DNET解析

介绍DNET的基本功能和特点,明确DNET解决的核心问题：对异构仓储数据的收割聚合、对分布异构的服务调度。通过对DNET信息空间和对象模型、DNET基于服务的架构,尤其对DNET驱动层的剖析,分析DNET如何解决这两个核心问题。并对DNET的适用性、数字仓储联盟建设中的标准化、数字仓储联盟可提供的服务等进行探讨。