对彝文发生问题的几点认识     

朱建军 《内江师范学院学报》2007,22(3):24-28

对彝文产生时间的讨论,不仅需要理论上的推绎,还需要得到更多考古材料的实证;彝文发生的渊源物不是一元的,而是多元的;彝文的起源与宗教有关,其创制者为彝族的宗教职业者--毕摩.  相似文献   

成人教育脱产学生现状及其工作针对性的探索   总被引：3，自引：0，他引：3  

穆奎  王芝英  罗树方  周国安  胡英 《继续教育研究》2003,(1):57-59

本针对成人教育脱产学习形式的快速发展，及其学生教育、教学管理上探索与实践的不成熟；通过对成人教育脱产学生的调查分析，探索出适合成人教育脱产学生教育、教学管理的方法。  相似文献   

控制系统中相关性能指标之间关系分析   总被引：1，自引：0，他引：1  

陆锦军 《南通职业大学学报》2004,18(4):26-28

本文比较详尽地推导和分析了二阶控制系统频域指标谐振频率及频宽与时域指标之间的关系，即ωr与ξ的关系、ωr与Mr的关系、ωb与ξ的关系、ωb与Mr的关系，并编写了MATLAB程序，画出了关系曲线；从而对分析和设计控制系统带来了极大的方便。  相似文献   

中国画款识的几种特殊记时法     

葛琳 《商丘职业技术学院学报》2006,5(4):99-101

中国画时间记载的方法呈多样化,一些特殊的记时方法流传不广而少为人知。作为一个现代美术工作者,对这些特殊记时法的来源、应用方法及效果加以探讨与认识,可以对这些特殊记时法有一个全面的了解,在实践中更好地灵活应用。  相似文献   

论全民健身与现代社会     

刘林箭 《湖州师范学院学报》1996,(5)

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.  相似文献   

MIMO离散非线性系统的自适应Backstepping控制     

郭建博  李靖 《许昌学院学报》2006,25(5):29-33

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.  相似文献   

沈从文的时间意识     

覃新菊 《信阳师范学院学报(哲学社会科学版)》2006,26(6):1-5

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。  相似文献   

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

Sally A. M. Fenton  Joan L. Duda  Timothy Barrett 《Journal of sports sciences》2016,34(3):239-251

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.  相似文献   

Accelerometer data requirements for reliable estimation of habitual physical activity and sedentary time of children during the early years - a worked example following a stepped approach     

Daniel D. Bingham  Silvia Costa  Stacy A. Clemes  Ash C. Routen  Helen J. Moore  Sally E. Barber 《Journal of sports sciences》2016,34(20):2005-2010

This study presents a worked example of a stepped process to reliably estimate the habitual physical activity and sedentary time of a sample of young children. A total of 299 children (2.9 ± 0.6 years) were recruited. Outcome variables were daily minutes of total physical activity, sedentary time, moderate to vigorous physical activity and proportional values of each variable. In total, 282 (94%) provided 3 h of accelerometer data on ≥1 day and were included in a 6-step process: Step-1: determine minimum wear-time; Step-2: process 7-day-data; Step-3: determine the inclusion of a weekend day; Step-4: examine day-to-day variability; Step-5: calculate single day intraclass correlation (ICC) (2,1); Step-6: calculate number of days required to reach reliability. Following the process the results were, Step-1: 6 h was estimated as minimum wear-time of a standard day. Step-2: 98 (32%) children had ≥6 h wear on 7 days. Step-3: no differences were found between weekdays and weekend days (P ≥ 0.05). Step-4: no differences were found between day-to-day variability (P ≥ 0.05). Step-5: single day ICC’s (2,1) ranged from 0.48 (total physical activity and sedentary time) to 0.53 (proportion of moderate to vigorous physical activity). Step-6: to reach reliability (ICC = 0.7), 3 days were required for all outcomes. In conclusion following a 7 day wear protocol, ≥6 h on any 3 days was found to have acceptable reliability. The stepped-process offers researchers a method to derive sample-specific wear-time criterion.  相似文献   

9.11事件后地缘政治观的反思   总被引：1，自引：0，他引：1  

赵为民 《洛阳师范学院学报》2002,21(6):26-28

地缘政治这一传统观念在经济全球化、政治趋向多极化的背景下,遇到了强有力的挑战。9.11事件后美国政府正在重构其地缘逻辑思维。适时提出“时缘政治”和“人缘政治”概念,全面审视世界政治格局。我国应从国家利益出发,积极重构地缘战略格局。  相似文献