基于生态位理论的图书馆联盟发展策略研究

生态位理论是强有力的理论分析和实践工具.将生态位理论应用于图书馆联盟发展策略研究,在界定图书馆联盟生态位概念的基础上,从合理定位、错位竞争、特色建设、竞争合作等方面制定图书馆联盟的生态位分离策略、生态位移动策略和协同进化策略,促进图书馆联盟的发展.     

环戊基甲基酮连氮的合成及表征

以环戊基甲基酮和水合肼为原料,合成一种新的酮连氮化合物(环戊基甲基酮连氮,C14N2H24),采用1H NMR、13C NMR和IR表征确认产物的结构,并通过Gaussian 09计算对产物分子构型进行解析,表明(1E,2E)为最稳定构型;同时测定环戊基甲基酮连氮在常压下的基本物理化学性质,包括沸点(Tb,238.4℃...     

区域性科技文献资源共享服务机制探索——以上海为例

简要介绍区域性科技文献资源共享服务机制的相关理论,系统地论述了上海地区科技文献资源共享服务机制的发展状况并提出了有针对性的改进措施。     

新兴的数字化革命:打造图书馆员的领导力

香港大学图书馆领导研修班是为现任和未来图书馆领导而设的密集式培训班,预计参加者主要为现任或未来的馆长或助理馆长.研修班将采用英语作为主要讲授语言另辅以部分中文翻译,采取让学员透过一系列主题讲学、个案研究、小组活动及互动讨论的方式向其它馆员和资讯业专家学习.     

高校图书馆面向社会服务的思考

高校图书馆面向社会服务是共享文献信息资源的必然要求,也是图书馆自身发展的需要。文章分析了高校图书馆面向社会开放服务的必要性和可能性,探讨了服务途径与相关的保障措施。参考文献4。     

Success in elite cycling: A prospective and retrospective analysis of race results

The development of peak performances is a main research focus in sports science. It is unclear how many former top junior athletes achieve success in the elite class later. The aim of the present study was to examine the careers of athletes who participated in major junior or adult/elite cycling events using prospective and retrospective analysis of competition results. The official results of major junior (age < or = 18 years) and elite (age > 18 years) cycling races from 1980 to 2004 were analysed. Age-related aspects, career lengths, and success were compared between riders who presented results in both junior and elite races (JUNIOR ELITE) and riders who had no junior race results (ELITE ONLY). Altogether, 27,454 results of 8004 athletes from 108 countries were collected. We found that 29.4% of the elite athletes had participated in junior World Championships, and that 34% of the participants in junior World Championships later participated in major elite competitions. JUNIOR ELITE athletes are significantly more successful in several cycling disciplines and have their first and last elite result at a younger age than ELITE ONLY athletes. No difference was found in career lengths. The data presented here emphasize the importance of long-term training programmes in the development of peak performance in cycling.     

Physical and metabolic demands of training and match-play in the elite football player

In soccer, the players perform intermittent work. Despite the players performing low-intensity activities for more than 70% of the game, heart rate and body temperature measurements suggest that the average oxygen uptake for elite soccer players is around 70% of maximum (VO(2max). This may be partly explained by the 150 - 250 brief intense actions a top-class player performs during a game, which also indicates that the rates of creatine phosphate (CP) utilization and glycolysis are frequently high during a game. Muscle glycogen is probably the most important substrate for energy production, and fatigue towards the end of a game may be related to depletion of glycogen in some muscle fibres. Blood free-fatty acids (FFAs) increase progressively during a game, partly compensating for the progressive lowering of muscle glycogen. Fatigue also occurs temporarily during matches, but it is still unclear what causes the reduced ability to perform maximally. There are major individual differences in the physical demands of players during a game related to physical capacity and tactical role in the team. These differences should be taken into account when planning the training and nutritional strategies of top-class players, who require a significant energy intake during a week.     

Conservation in the United Kingdom

British conservation is respected around the world for its excellence, based on a tradition of caring for heritage material, backed up by high‐quality training and research. This paper charts the origins and development of the conservation profession in the United Kingdom and provides a comprehensive overview of the number, location and variety of conservation specialists currently working in the UK. It looks at those working in both the public and private sectors. The findings are based on a number of surveys conducted by the professional bodies and by government agencies such as the Museums & Galleries Commission (MGC). Most of the information relates only to museums, but the most recent survey of conservators by the MGC also looked at provision in libraries and archives.