论全民健身与现代社会

本文论述了现代社会的迅速发展与全民健身之间的关系,全民健身的欣起与竞技体育之间的关系,以及在我国社会主义市场经济的作用下如何使体育与经济建设接轨,发挥体育的经济效益.     

对口招生拉动中等职业教育

随着经济和社会的快速发展，越来越多的中等职业学校的学生希望能升入高等学校继续深造。实行对口招生制度以来，中等职业学校一直将对口招生列为学校的培养任务之一，做好单招工作赢得了社会地位，同时对口招生制度也对中等职业教育产生了深刻的影响，推动了职业教育的健康发展。     

MIMO离散非线性系统的自适应Backstepping控制

研究MIMO离散非线性系统的自适应Backstepping控制,对包含两个三阶子系统的MIMO系统推出稳定的自适应控制器设计,并利用关键性引理和投影算法的性质证明了闭环系统的所有信号有界和保证跟踪性能.     

基于OPAC的图书馆馆藏资源整合

如何将图书馆馆藏的各种数字资源、电子资源及网络资源合理的整合在一起,实现资源的有效利用,已经成为现代图书馆的一个重要课题。通过一些资源整合的实例,探讨基于OPAC系统的馆藏资源整合解决方法。     

Early Literacy and the Public Library: An Opportunity of a Lifetime (of Reading)

In this article, author Bill Ptacek says that the future is now, and, at least from the 1970s through today, in the field of early childhood work, the future has come so fast that it is constantly upon us. That reality means that those concerned about young children in libraries have been about adaptation on a continuing basis. In this world of rapid change, innovation is constant: City firefighters come to the libraries in uniform to read stories to children, library outreach specialists take programs to daycare centers in their communities, and staff members create a space in a library devoted to early childhood reading. This tradition of rapid change means that the early childhood staff of most large public libraries in North America is changing for the future on a regular basis. The work unit should be considered seriously as one model for 21st century public library reform.     

感兴说与道禅文化思想的渊源

中国古典美学中的感兴说指的是艺术创作中的灵感兴发现象。与西方文艺理论中的灵感说大不相同,它包括五个方面。其一,灵感兴发的神秘源泉:体道通神;其二,灵感兴发的诱因和物质载体:自然万物;其三,灵感兴发的主体状态:葆真全性,回归自然;其四,灵感兴发的主观条件:凝神、妙悟;其五,灵感兴发的本质涵义:天人感应天人合一。所有这五个方面,无不基于道家和禅宗哲学思想。     

具有分段常数变元的一阶线性微分方程

本文讨论一阶具有分段常数变元线性微分方程的振动性,得到了三个振动性定理。     

沈从文的时间意识

沈从文的时间意识与死亡意识相生相成,构成沈从文“生命哲学”的重要而又特殊的组成部分。他认为时间的魔力巨大,能消融生命,能治疗痛苦,还能造就创作;他的时间意识停留在“过去”,具有“过去式”、“静态化”与“突变性”的特点。     

三氮烯类显色剂在光度分析中的应用新进展

综述了近六年来三氮烯类显色剂在光度分析领域的应用新进展,并探讨了该类试剂与金属离子显色体系的特点,参阅文献46篇。     

Inter-participant variability in daily physical activity and sedentary time among male youth sport footballers: independent associations with indicators of adiposity and cardiorespiratory fitness

Participation in youth sport is assumed to promote and contribute towards more physically active lifestyles among children and adolescents. The aim of this study was to examine inter-participant variability in objectively measured habitual physical activity (PA) behaviours and sedentary time among youth sport participants and their implications for health. One-hundred-and-eighteen male youth sport footballers (Mean ± s = 11.72 ± 1.60) wore a GT3X accelerometer for 7 days. Average daily PA [min · day^?1, in light (LPA), moderate (MPA), vigorous (VPA) and combined moderate-to-vigorous (MVPA)] and sedentary time were calculated. Participants’ body mass index adjusted for age and sex (BMI–standard deviation score), per cent body fat (BF%), waist circumference and cardiorespiratory fitness were assessed. Results revealed that variability in daily PA behaviours and sedentary time (min · day^?1) was associated with BMI–standard deviation score [VPA (?), MVPA (?)], BF% [sedentary time (+), VPA (?), MVPA (?)], waist circumference [sedentary time (+), LPA (?)] and cardiorespiratory fitness [sedentary time (?), MPA (+), VPA (+), MVPA (+)]. Whilst sedentary time and MVPA were not related to health outcomes independent of one another, associations with markers of adiposity and cardiorespiratory fitness were stronger for sedentary time. Sedentary time was also significantly positively related to waist circumference independent of VPA. Results demonstrate inter-participant variability in habitual PA and sedentary time among youth sport participants which holds implications for their health. Thus, promoting PA and, in particular, reducing sedentary time may contribute towards the prevention of adverse health consequences associated with a physically inactive lifestyle for children and adolescents active in the youth sport context.