规则变化后蹦床运动飞行分对成绩的影响     

骆意  王少峰 《军事体育进修学院学报》2012,31(2):66-69

运用文献资料法、统计分析法,对参加2011年全国蹦床锦标赛的我国优秀女子蹦床运动员的飞行分对成绩的影响进行研究,通过分析发现：飞行时间对女子预赛的名次产生了重要的影响,但对决赛名次影响较小。决赛飞行分大于预赛第2套飞行分,但是小于预赛第1套。决赛飞行分高于难度分是普遍现象。建议在规则适应阶段,提高飞行分,同时必须注意综合难度、技术以及位移等对成绩的影响以及相互间的关系,力求在提高飞行时间的同时,保持更高的难度分和技术分,减少位移分。  相似文献   

短跑运动的摆动和转动技术与运动实践   总被引：9，自引：4，他引：5  

王港 《武汉体育学院学报》2001,35(3):84-86

从“快速摆动“技术产生的过程,运动生物力学原理,在运动实践中的功效进行分析,以期加深教练员与运动员对此技术的理解.  相似文献   

Flight dynamics of an American football in a forward pass   总被引：2，自引：2，他引：0  

William?J.?RaeEmail author 《Sports Engineering》2003,6(3):149-163

The motion of an American football in a forward pass is discussed in this paper. It was investigated by using wind-tunnel aerodynamic data in a numerical integration of the full nonlinear equations of motion, and by application of the small-angle theory for the atmospheric motion of an axisymmetric spinning body. The numerical simulations agree with certain observed features such as the range, flight duration, and ratio of the spin and precession frequencies. The analytic results reveal functional dependences of the flight parameters on the aerodynamics and give insights into the physical effects that occur. Both approaches show a feature that is known as ‘drift’ in the science of ballistics, namely that a long, highly arched trajectory of a spinning body does not lie in a vertical plane, but rather turns slightly to the left or right, depending on the direction of the spin vector and on the magnitudes of the aerodynamic loads.  相似文献   

职教改革视域下“大国工匠”培养模式研究     

苏文曦 《江苏经贸职业技术学院学报》2020,(2):76-78

党的十九大过后,中国职业教育迎来了改革的新使命,高职院校“大国工匠”的培养更是国家、社会关注的重心。而目前,国内高职院校的“大国工匠”培养职能定位模糊,运行效率低下。可从教学、德育、教师、实践等四个方面,系统规划高职教育培养体系,总结新时代高职院校培养“大国工匠”的有效模式。  相似文献   

《飞行原理基础》课程形成性考核模式研究     

郭卫刚  柳文林  康小伟 《教育教学论坛》2019,(16):180-181

针对传统《飞行原理基础》课程考核模式中存在的问题,结合航空人才培养要求,通过改进考核方法、考核理念、考核思路及优化考核过程等手段,提出了具体考核模式改革的措施。结果表明:通过对飞行原理基础课程形成性考核模式的探索,可以提高学员学习兴趣和积极性,达到提高教学质量和教学效果的目的。  相似文献   

Dropouts in Swiss vocational education and the effect of training companies’ trainee selection methods     

Lara Forsblom  Lucio Negrini  Jean-Luc Gurtner  Stephan Schumann 《Journal of Vocational Education & Training》2016,68(4):399-415

In the Swiss vocational education system, which is often called a ‘Dual System’, trainees enter into an apprenticeship contract with a training company. On average, 25% of those contracts are terminated prematurely (PCT). This article examines the relationship between training companies’ selection methods and PCTs. The investigation is based on a quantitative study with a cross-sectional design and on qualitative interviews. Trainers and operations managers (N = 335) of Swiss training companies for cooks and painters were surveyed. Half of the companies have been affected by a PCT in the past and the other half have not. The findings indicate that a certain amount of the explained variance between companies with and without reported PCTs can be explained by the companies’ selection process. Companies that were affected by a PCT use a job interview and a company visit significantly less often in their selection process than companies without a PCT.  相似文献   

从台商"春节包机"看两岸直航的必然趋势     

熊建设  卢省花 《江西教育学院学报》2005,26(2):25-27

2005年台商“春节包机”的顺利飞航，给两岸同胞带来了新的憧憬。尽管台湾当局人为地给两岸直航设置了种种障碍，但两岸同胞同文同种，血缘、亲情和悠久的文化传承是任何人也无法改变的，两岸互补互利的经贸合作是任何人也无法阻挡的。春节包机的实现表明，两岸中国人是有耐心、有经验、也是有智慧的。两岸直航是人心所向，也是历史发展的必然趋势。  相似文献   

新型电子轰击存贮型脉冲离子源     

徐贞林  田锡惠 《天津大学学报(英文版)》1995,(2)

电子轰击存贮型脉冲离子源是为高分辨率、高灵敏度飞行时间质谱仪设计的新型离子源．它具有存贮以及时间压缩等特点，使仪器的整体性能有很大提高，质量分辨率达３５００．本文推导了二阶时间压缩聚焦条件，论证了存贮性能，给出了计算机模拟及实验结果．  相似文献   

学徒制到练习生制:中国传统学徒制的现代化转型     

崔莉萍  雷前虎 《职业技术教育》2020,(1):67-72

民国时期,传统学徒制无法应对新兴工商业人才供给需求,被练习生制逐渐替代。练习生制有三种起源说--英国说、日本说和中国说,经历了清末明初产生期、民国繁荣期、建国之初嬗变期三个演变历程,主要采取企业自主培养、校企合作培养、间接训练培养三种人才培养模式,实现了对传统学徒制的革新,实现了人才观念、培养模式、人事管理、职业精神培育等方面的现代化转型,探索出较为科学、系统的现代学徒制实践范式,这为新时代构建中国特色现代学徒制提供了借鉴。  相似文献   

Toward a Social Ontology for Science Education: Introducing Deleuze and Guattari’s assemblages     

Jesse Bazzul  Shakhnoza Kayumova 《Educational Philosophy and Theory》2016,48(3):284-299

This essay’s main objective is to develop a theoretical, ontological basis for critical, social justice-oriented science education. Using Deleuze and Guattari’s notion of assemblages, rhizomes, and arborescent structures, this article challenges authoritarian institutional practices, as well as the subject of these practices, and offers a way for critical-social justice-oriented science educators and students to connect with sociopolitical contexts. Through diagramming institutional and community relationships using DG’s theory of assemblages, we envision new ontological spaces that bridge social and material entities. A conceptualization of science education through DG’s philosophy of rhizomes and assemblages allows educators to merge critical, post-foundational perspectives with questions of ontology: not just what exists, but what could exist in terms of human social organizations (governments and community groups), inorganic matter, microorganisms, and plant/animal populations.  相似文献