加拿大孕期体力活动指南（2019）解读与启示          下载免费PDF全文

刘祥茂  周天舒  樊冲  王军利 《体育科研》2020,(3):98-103

运用文献资料法、逻辑分析法等对加拿大孕期体力活动指南（2019）研制背景、方法和内容等进行分析，探究其特点和规律。主要结论：（1）孕期体力活动指南是目前该研究领域研究成果的继承和完善，重视不同类型体力活动与健康相关证据的收集，依据专家组共识、文献分析、体力活动与健康的剂量-效应关系，并通过公共意见咨询，确保指标制定过程的科学性、严谨性、适用性；（2）采用质量控制方法研制孕期体力活动指南，为受众群体提供合理化的体力活动强度、活动方式及活动安全防控等内容。建议：在“健康中国2030”目标引领下，应尽快研制我国孕期体力活动指南，为孕期体力活动提供科学依据，构建体医融合的服务模式  相似文献   

What motivates enrolment in programming MOOCs?     

Piret Luik  Reelika Suviste  Marina Lepp  Tauno Palts  Eno Tõnisson  Merilin Säde  Kaspar Papli 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(1):153-165

Learners who enrol in massive open online courses (MOOCs) have different backgrounds and tend to have different motivations than learners in traditional courses. Based on value-expectancy theory, an instrument was developed to measure motivation for enrolling in a programming MOOC. A study with 1229 adult participants in Estonian-language programming course “About Programming” was conducted to validate the instrument. Results of confirmatory factor analysis validated the 7-factor scale named factors influencing enrolment in MOOC (FIEM). FIEM comprises three factors of expectancies, three factors of values and one factor of social influence. The highest and lowest rated motivational factors influencing enrolment in programming MOOC are discussed in the paper. Interest in and expectations for the course, personal suitability of distance learning and suitability for family and work are the highest-rated motivational factors for those who enrol in MOOC. Usefulness related to own children, social influence and usefulness to related to certification were the lowest rated. The results of this study can be useful for designers of programming MOOCs and the developed scale might be used in future studies.  相似文献   

Digital Module 05: Diagnostic Measurement—The G‐DINA Framework https://ncme.elevate.commpartners.com     

Wenchao Ma  Jimmy de la Torre 《Educational Measurement》2019,38(2):114-115

In this ITEMS module, we introduce the generalized deterministic inputs, noisy “and” gate (G‐DINA) model, which is a general framework for specifying, estimating, and evaluating a wide variety of cognitive diagnosis models. The module contains a nontechnical introduction to diagnostic measurement, an introductory overview of the G‐DINA model, as well as common special cases, and a review of model‐data fit evaluation practices within this framework. We use the flexible GDINA R package, which is available for free within the R environment and provides a user‐friendly graphical interface in addition to the code‐driven layer. The digital module also contains videos of worked examples, solutions to data activity questions, curated resources, a glossary, and quizzes with diagnostic feedback.  相似文献   

The Influence of Hygroscopic Materials on the Fluctuation of Relative Humidity in Museums Located in Historical Buildings     

C. Ferreira  V. P. de Freitas 《文物保护研究》2020,65(3):127-141

ABSTRACT

The preservation of artefacts in museum collections is profoundly affected by fluctuations in temperature and, especially, relative humidity (RH). Since the late nineteenth century, many studies have been carried out on the best way to control hygrothermal conditions. In old buildings located in maritime temperate climate zones (such as Portugal) with strong thermal inertia, and which have low ventilation rate (relative to the volume and number of visitors), daily and seasonal hygroscopic inertia may help to assure the maintenance of RH stabilization conditions. The use of expensive active systems may be minimized through the passive behaviour of internal finishing building materials. This work presents the results of an experimental laboratory study conducted in a flow chamber to demonstrate the enormous potential of hygroscopic materials in stabilizing interior relative humidity. Based in these results and in-situ monitoring in a museum housed in a building, located in Porto, with a typical construction of the 1950s (granite masonry and reinforced concrete slabs), a numerical analysis was done to quantify the influence of hygroscopic materials in stabilizing the interior relative humidity.  相似文献   

CBA联赛中三人制与二人制裁判错漏判的比较   总被引：1，自引：0，他引：1  

夏春  马晓蔚 《体育与科学》2003,24(3):54-55

为了使我国篮球运动的发展和国际接轨，促使篮球运动技术、战术水平的正常发挥，保证比赛的健康发展，2000年我国男子CBA比赛中首次实行了三人制裁判。本文通过对我国CBA比赛几个赛季几十场比赛的两种裁判制的全面比较分析，为在全国推广和提高我国裁判水平提供理论和实践依据。  相似文献   

青年女子排球运动员弹跳力模型的研制   总被引：2，自引：0，他引：2  

夏崇德  颜晓 《中国体育科技》2003,39(7):20-22

为了探索发展青年女子排球运动员弹跳力的有效途径 ,以四川青年女子排球队 9名运动员和重庆女子排球队 13名运动员为研究对象 ,对有关弹跳力的多种因素进行了相关、多元回归分析 ,进而制定出发展弹跳力的回归模型 ,为青年女子排球运动员弹跳力训练提供参考  相似文献   

gn During Xinhai Revolution Ti     

mesBIAN 《体育科技文献通报》2006,(12)

of Politics And Law,Beijing 102249,China; 2.the First Department of Law,Hebei Professional College of Politics And Law,Hebei Shijiazhang050091,Chian)Xinhai Revolution ended the feudal mo  相似文献   

刍议我国体育传播学研究的发展进程     

夏美燕 《军事体育进修学院学报》2006,25(2):10-12

从传播学及历史学的角度,对我国体育传播学研究的发展进行了回顾,并针对目前我国体育传播学的学术研究现状,提出了发展体育传播学的建议。  相似文献   

中日两国国民身高的比较研究   总被引：9，自引：2，他引：7  

江崇民  林莉萍 《北京体育大学学报》2001,24(2):208-211

横剖面调查是体质研究中的常用方法 ,其结果能够有效的反映研究对象的体质现状。对生活在不同地域人群同时期体质状况横剖面调查结果的比较 ,可以发现它们之间在体质方面的差异。据此寻找原因 ,为增强体质提供对策。通过对同处东亚的中日两国国民的身高进行的比较研究发现 ,中国年轻男子 (从 7～ 2 9岁 )的平均身高低于日本同龄人群 ,45岁以上年龄人群高于日本同龄人群。女子身高虽然从总体上还高于日本同龄人群 ,但生活在中国南方的年轻女子的平均身高与日本同龄女子已无差异。  相似文献   

体育产业概念理解及分类的研究   总被引：4，自引：0，他引：4  

郭炳德  高玖灵 《山西师大体育学院学报》2004,19(2):19-20

体育产业概念及分类在国内外都有很大的争议，通过对体育产业进行分析，且根据我国国情对体育产业概念及分类进行科学的界定。  相似文献