Selected plantar pressure characteristics associated with the skating performance of national in-line speed skaters

In order to help coaches analyse the techniques of professional in-line speed skaters for making the required fine adjustments and corrections in their push-off work, this study analysed the specific plantar pressure characteristics during a 300-m time-trial test. Fourteen elite in-line speed skaters from the national team were recruited in this study. The total completion time of the 300-m time-trial test, duration of each skating phase, and plantar pressure distribution were measured. The correlation between plantar pressure distribution and skating performance was assessed using Pearson correlation analyses. The results showed that the contact time of the total foot and force–time integral (FTI) in the medial forefoot were significantly correlated with the duration of the start phase, and the FTIs in the medial forefoot of the gliding (left) leg and lateral forefoot of the pushing (right) leg were significantly correlated with the duration of the turning phase. The maximum force in the medial heel, medial forefoot, and median forefoot and the FTI in the medial heel and medial forefoot were significantly correlated with the duration of the linear acceleration phase. The results suggest that a correct plantar loading area and push-off strategy can enhance the skating performance.     

图书馆自动化系统更新换代时数据转换问题研究

文章对基于SQL的图书馆自动化系统向ILASII系统更新换代过程中,数据进行转换时所采取的方法作了较为详细的阐述,研究并提出了数据库间进行数据转换的实施方案。     

论《畿辅方言》的"因声求义"

清人王树枏的《畿辅方言》是清末民初一部记载河北古代方言的辞书,在汉语方言学史和词汇史上占有重要地位。王氏以声音通训诂,运用＂因声求义＂训诂原理进行字、词诠解的方法,在传统语言学中占有重要地位。     

图书情报专业创业教育研究

认为目前大学生就业形势日益严峻,通过创业实现就业是解决就业问题的一个重要途径。创业教育已经成为高等教育的重要组成部分,在图书情报专业教育中理应占有一席之地。图书情报专业现有的课程体系存在一些与创业教育不相适应的地方。通过调查发现,图书情报专业学生的创业意愿不强烈。因此,需要改革现有课程、培训教师、建设创业文化等措施,推进图书情报专业学生的创业活动。     

Climate and litter C/N ratio constrain soil organic carbon accumulation

Soil organic carbon (SOC) plays critical roles in stabilizing atmospheric CO₂ concentration, but the mechanistic controls on the amount and distribution of SOC on global scales are not well understood. In turn, this has hampered the ability to model global C budgets and to find measures to mitigate climate change. Here, based on the data from a large field survey campaign with 2600 plots across China''s forest ecosystems and a global collection of published data from forested land, we find that a low litter carbon-to-nitrogen ratio (C/N) and high wetness index (P/PET, precipitation-to-potential-evapotranspiration ratio) are the two factors that promote SOC accumulation, with only minor contributions of litter quantity and soil texture. The field survey data demonstrated that high plant diversity decreased litter C/N and thus indirectly promoted SOC accumulation by increasing the litter quality. We conclude that any changes in plant-community composition, plant-species richness and environmental factors that can reduce the litter C/N ratio, or climatic changes that increase wetness index, may promote SOC accumulation. The study provides a guideline for modeling the carbon cycle of various ecosystem scales and formulates the principle for land-based actions for mitigating the rising atmospheric CO₂ concentration.     

变革中的西方图书情报学教育

考察和总结了以美国为代表的西方图书情报学教育近年来的改革措施 ,包括改名、教学人员与从业人员的交流、改进教学计划以及对学生能力的培养等 ,并提出我们可从中借鉴之处。     

中国式管理科学建构的探讨

本文从我国当前社会转型的实践,制度因素和传统文化的相互影响的角度探讨中国式管理科学的建构,并作为比较分析,笔者认为：符合市场本必要求的企业内部和外部合理有效的制度建设以及在此基础上企业家择优机制的形成是中国式管理科学建构的关键,也是中西方管理思想融合的基础,因为这种制度基础对各种管理文化因素有扬弃,筛选和重构的功能。     

高校图书馆知识传播功能的拓展

本文图书馆拓展知识传播功能的必要性、软硬件环境以及拓展知识传播功能的途径等三个方面论述了高校图书馆要适应时代发展的需要,提高其信息服务质量,应着重从拓展其知识传播功能入手。     

图书馆学理论研究三思

审视我国图书馆学理论研究的客观现实,对图书馆学有没有理论、图书馆学要不要理论以及加强图书馆学理论建设这三个基本问题进行理性思考。     

《金陵春梦》作者唐人的一生

唐人曾以“二梦”(《金陵春梦》、《草山残梦》)“秘录”(《蒋后主秘录》)共 18大集行世、6 30万字长卷写尽蒋介石、蒋经国父子红尘兴衰、帐前帏后 ,乃至旮旯隐私 ,而在五十、六十年代风靡海内外 ,造成一时洛阳纸贵。“唐人不姓唐 ,姓严。”浙江省人民政府参事严仪先生对笔者说 :“唐人是笔名 ,他的真实姓名叫严庆澍 ,五四运动发生那年 ,即 1919年出生。我原名庆治 ,是他唯一的胞弟 ,但他长我 10岁。我们是江苏吴县人 ,在太湖边的洞庭东山镇上长大。”太湖东山一严姓严氏世居苏州吴县东山镇。这东山便是突兀伸展于浩渺太湖碧波中的东洞庭半…