帮助运动员支持1天进行2次训练

1天2次的训练通常是美国橄榄球进行比赛季节早期身体条件训练和许多其他运动项目进行常年运动训练的一部分。额外的训练有助于加速身体条件训练，给力量训练和技能发展留出时间，还有助于在队友中发展同志合作精神。1天2次训练的特点是强调体质的适应性。在夏季训练时，运动员频繁地置身于附加的湿热环境应激下。我们专家组就1天2次训练中的高能量需要、有限的恢复时间和“制造伤口”的心理应激问题进行讨论，基于科学理论和临床经验提出帮助运动员在1天2次的训练中获得最大的成效的策略。     

A Straight Look at Skew Distributions

This article argues that the Normal distribution is often not a good model for anthropomorphic data.     

The Web impact of open access social science research

For a long time, Institute for Scientific Information (ISI) journal citations have been widely used for research performance monitoring of the sciences. For the social sciences, however, the Social Sciences Citation Index® (SSCI®) can sometimes be insufficient. Broader types of publications (e.g., books and non-ISI journals) and informal scholarly indicators may also be needed. This article investigates whether the Web can help to fill this gap. The authors analyzed 1530 citations from Google™ to 492 research articles from 44 open access social science journals. The articles were published in 2001 in the fields of education, psychology, sociology, and economics. About 19% of the Web citations represented formal impact equivalent to journal citations, and 11% were more informal indicators of impact. The average was about 3 formal and 2 informal impact citations per article. Although the proportions of formal and informal online impact were similar in sociology, psychology, and education, economics showed six times more formal impact than informal impact. The results suggest that new types of citation information and informal scholarly indictors could be extracted from the Web for the social sciences. Since these form only a small proportion of the Web citations, however, Web citation counts should first be processed to remove irrelevant citations. This can be a time-consuming process unless automated.     

Success in a Parallel Universe,Perhaps with some Help from your DAD Digital Asset Distribution

A new digital distribution infrastructure is being created to parallel the structure in the physical world by which content is stored, distributed, and invoiced. Like in the physical world, book publishing will need fewer points of distribution than it has points of creation: there will be “distributors” handling the digital content of many publishers and some large publishers will handle the digital content of smaller ones. This system is just now taking shape and this paper defines the terms and enumerates some of the emerging players in this role. This paper was first presented during the “Making Information Pay 2007” on May 10, 2007 organized by the Book Industry Study Group (). The research completed will help any publisher with the task of finding a DAD. The research paper version of our work will be made available as a final White Paper, with conclusions and updated information by Klopotek Inc. that can be ordered at Klopotek.com     

Analysis of passing sequences, shots and goals in soccer

Early research into how goals were scored in association football (Reep and Benjamin, 1968) may have shaped the tactics of British football. Most coaches have been affected, to a greater or lesser extent, by the tactics referred to as the "long-ball game" or "direct play", which was a tactic employed as a consequence of this research. Data from these studies, published in the late 1960s, have been reconfirmed by analyses of different FIFA World Cup tournaments by several different research groups. In the present study, the number of passes that led to goals scored in two FIFA World Cup finals were analysed. The results conform to that of previous research, but when these data were normalized with respect to the frequency of the respective lengths of passing sequences, there were more goals scored from longer passing sequences than from shorter passing sequences. Teams produced significantly more shots per possession for these longer passing sequences, but the strike ratio of goals from shots is better for "direct play" than for "possession play". Finally, an analysis of the shooting data for successful and unsuccessful teams for different lengths of passing sequences in the 1990 FIFA World Cup finals indicated that, for successful teams, longer passing sequences produced more goals per possession than shorter passing sequences. For unsuccessful teams, neither tactic had a clear advantage. It was further concluded that the original work of Reep and Benjamin (1968), although a key landmark in football analysis, led only to a partial understanding of the phenomenon that was investigated.