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   

多旋翼无人机微多普勒特性分析与特征提取     

马娇  董勇伟  李原  李凌霄  杨杰芳 《中国科学院大学学报》2019,36(2):235-243

针对多旋翼无人机目标的识别问题，提出一种基于伽柏（Gabor）变换的瞬时频率估计与快速傅里叶变换（FFT）相结合的微多普勒特征提取算法。首先建立多旋翼无人机旋翼回波模型，并通过仿真分析叶片数目、旋翼转速和初始相位等参数对微多普勒特征的影响，利用Gabor变换得到时频特征。在此基础上通过瞬时频率极大值法提取微多普勒频率，并对瞬时频率采用FFT提取旋翼数和转动频率，从而获得叶片长度估计值。实测数据验证了该算法较为准确地提取无人机的微多普勒参数。  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   

我国现阶段乡村农民体育观念的调查与研究   总被引：8，自引：0，他引：8  

马柏湘  黄敬华  陈宗弟 《沈阳体育学院学报》2003,22(4):36-37

采用文献研究、下乡访谈、问卷调查、数理统计、多因素分析等方法,以我国20个省、区、市部分农民(户)为研究对象,对他们参与全民健身、享受体育的现状进行调查,力求探索出一条以城市带动乡村来提高我国整体体育人口比例的道路。研究结果显示:我国9亿农民在富民政策指引下,92％基本解决“温饱”问题。“温饱”之后思什么?农民是否愿意在自己农闲时间中给体育留有一席之地?他们对健康的渴求、精神的愉悦、消费的倾向如何?需要全社会来引导与关注。  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   

主动·平等·深入--简析高校师生关系现状及处理原则     

张钊  马雷 《河北体育学院学报》2003,17(2):44-45

概括我国高等教育的发展现状,分析师生关系中存在的具有普遍意义的问题,并进一步探索解决方法,力求通过协调双方关系,更好地为21世纪的中国培养优秀人才.  相似文献   

对我国掷标枪后备人才最后用力投掷技术的探讨   总被引：2，自引：0，他引：2  

曲淑华  马树芝  曲言明 《北京体育大学学报》2003,26(5):692-693,696

对中国优秀青少年标枪运动员的技术进行分析,分析我国的青少年标枪运动员的掷标枪技术不十分理想。主要表现在:最后用力时的右脚着地发力不积极;左膝关节弯曲过大,并在出手时没有充分伸展;投掷手臂没有明显的延迟动作。  相似文献   

奥运会的经济价值分析以及对北京举办奥运会的借鉴意义   总被引：11，自引：1，他引：10  

马涛  赵宏 《天津体育学院学报》2003,18(3):15-17

2008年北京奥运会的举行将大大加快北京地区乃至我国的经济现代化建设的步伐。应用实证研究的方法，对历届奥运会的经济价值进行分析，指出举办奥运会对促进北京地区乃至全国的经济增长、改善劳动力就业，加快产业结构调整的积极作用。同时从资金筹措、场馆建设、产业可持续发展等方面对北京避免奥运会后可能出现的“经济低谷效应”，实现可持续发展提出了建议。  相似文献   

新生儿窒息血糖异常50例临床分析     

马晓丹  舒蕾  王美清  黄婉云  马淑芬 《玉溪师范学院学报》2003,19(Z1):100-101

目的 :了解窒息新生儿血糖变化特点 ,为治疗提供依据 .方法 :对 1998年 1月～ 2 0 0 0年 5月收住的窒息新生儿 2 0 4例进行血糖分析 .结果 :2 0 4例中发生血糖异常 5 0例 (2 4 .5 1% ) ,其中低血糖 14例 (6 .86 % ) ,高血糖 36例 (17.6 5 % ) .高血糖的发病率明显高于低血糖的发病率 .高血糖的发生与窒息程度有关 ,重度窒息血糖水平高于轻度窒息 .结论 :对窒息新生儿应严密监测血糖 ,掌握输糖速度 ,避免血糖异常加重脑损伤 .  相似文献