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11.
我国优秀游泳运动员途中游速度、划频、划幅变化的研究 总被引:5,自引:0,他引:5
竞技游泳途中游的速度取决于划频和划幅两个因素。通过实验观测和比较,分析了我国最高水平游泳运动员成绩及途中游速度、划频、划幅的现状与变化情况,并结合身材、动作效率等因素,对如何调控划频、划幅以促进我国游泳运动员水平的进一步提高提出了参考意见。 相似文献
12.
跨世纪的高校体育教育专业课程方案研究 总被引:15,自引:0,他引:15
把握21 世纪体育教育专业培养目标,构建跨世纪课程体系,是世纪之交我国普通高校体育教育专业改革与发展的关键环节。本文采用文献法、调查法、比较法和统计方法,总结80 年代以来修订体育教育专业教学计划的经验,借鉴国外研究成果,提出了我国普通高校体育教育专业课程方案。结果表明:本研究之课程方案培养目标明确;课程体系合理;可操作性和灵活性强,适合世纪之交我国体育教育专业基本要求。 相似文献
13.
体育教育专业选修课程整体改革研究 总被引:4,自引:0,他引:4
为了改变学生知识结构单一的状况 ,培养出现代社会所需要的体育教育人才 ,从 1 997年开始 ,在福建师大体育系 95和 96两个年级中调整教学计划 ,大幅度增加选修课 ,并在选修课的课程设置、教学内容与方法、教学条件、教学管理以及师资队伍建设等方面进行了整体改革 ,取得了初步成效 相似文献
14.
Production of accurate skeletal models of domestic animals using three‐dimensional scanning and printing technology 下载免费PDF全文
Xuexiong Song Yanjun Huan Shansong Gao Zhongling Jiang 《Anatomical sciences education》2018,11(1):73-80
Access to adequate anatomical specimens can be an important aspect in learning the anatomy of domestic animals. In this study, the authors utilized a structured light scanner and fused deposition modeling (FDM) printer to produce highly accurate animal skeletal models. First, various components of the bovine skeleton, including the femur, the fifth rib, and the sixth cervical (C6) vertebra were used to produce digital models. These were then used to produce 1:1 scale physical models with the FDM printer. The anatomical features of the digital models and three‐dimensional (3D) printed models were then compared with those of the original skeletal specimens. The results of this study demonstrated that both digital and physical scale models of animal skeletal components could be rapidly produced using 3D printing technology. In terms of accuracy between models and original specimens, the standard deviations of the femur and the fifth rib measurements were 0.0351 and 0.0572, respectively. All of the features except the nutrient foramina on the original bone specimens could be identified in the digital and 3D printed models. Moreover, the 3D printed models could serve as a viable alternative to original bone specimens when used in anatomy education, as determined from student surveys. This study demonstrated an important example of reproducing bone models to be used in anatomy education and veterinary clinical training. Anat Sci Educ 11: 73–80. © 2017 American Association of Anatomists. 相似文献
15.
研究了掺Al或Ag微粉的聚丙烯(PE)基和聚二氯乙烯(PVDF)基复合材料的导电开关特性,发现在某一电场阈值(对应开关电压阈值Vk)附近,复合材料的电导率随外电场的变化而发生大幅度变化,还研究了掺入金属微粉的种类、体积比及颗粒度对Vk的影响,验证了量子隧道效应是复合材料导电开关特性的主要机理。 相似文献
16.
包学雄 《南宁师范高等专科学校学报》2006,23(1):1-4
在实地调查的基础上,对国家商务部机构改革问题作了分析。商务部是政府追求新的角色定位和职能优化的结果,顺应了内外贸一体化的历史趋势。文章对内外贸管理协调、政府职能定位等问题进行了分析,提出了深化商务部机构改革的建议。 相似文献