对我国优秀男子三级跳远运动员跨步跳起跳三时相运动学参数的研究   总被引：6，自引：0，他引：6  

谢向阳  刘江南  王灿 《北京体育大学学报》2004,27(5):716-719

运用定点高速录像(250帧/ s)的方法,对我高优秀男子三级跳远运动员跨步跳起跳过程中三时相(着地、缓冲、蹬伸)运动学参数进行了定量分析.分析结果表明:跨步跳起跳过程中,着地角、起跳幅度、着地时重心高度、离地时重心高度、离地时两大腿夹角对跨步跳离地时水平速度影响较大,是造成跨步跳阶段水平速度损失大的主要原因.我国优秀男子三级跳远运动员跨步跳起跳过程中,过分屈膝,蹬伸迟、不充分,摆动动作消极,不能有效地提高腾起初速度,提高起跳效果.  相似文献   

Evaluation and Optimization of Matting and Framing Methods and Choice of Materials for the Temporary Display and Transit of Photographs and Works on Paper Using a Design of Experiments Approach     

Ana Martins  Lee Ann Daffner 《文物保护研究》2018,63(5):397-399

  相似文献   

Pictures,patience, and practicalities: lessons learned from using photovoice in applied communication contexts     

Phillip E. Wagner  Laura L. Ellingson 《Journal of Applied Communication Research》2016,44(3):336-342

The unforeseen trials of arts-based research may suppress creative and innovative explorations. Photovoice, a visual method of investigation employing participatory photography, presents a host of apprehensions. Yet, photovoice is both a valid and rich methodology that can greatly expand the reach and scope of applied communication research. In this essay, we – three applied communication researchers – discuss the complexities of photovoice, highlighting areas of consideration that interested researchers should contemplate before utilizing this methodology. Briefly exploring three of our research studies and their varying topics (i.e. long-term cancer survivors, domestic violence organizational advocacy, male body culture), we discuss three broad areas of difficulty in photovoice research: analysis, control, and exposure. Despite the unique obstacles that photovoice presents, we argue that it, along with other forms of arts-based research, are profitable and definitely worth the challenge.  相似文献   

Cindy Sherman: A Play of Selves. A collaborative approach to conservation     

J. Luca Ackerman  Peter Mustardo  Hanako Murata  Tatiana Cole 《文物保护研究》2016,61(3):1-6

In 2013, The Better Image (TBI) was contacted to examine A Play of Selves, a unique work created by artist Cindy Sherman during her graduate studies in 1975. The work is composed of 244 paper doll-like photographs of Sherman that are presented within 72 frames. During initial condition checks, it was noted that a number of individual elements had begun to show signs of chemical staining. Over the course of 2013/2014, a collaborative response was developed with the help of the artist, the artist's printer, the representing gallery, TBI staff and the owner. The main goal was to address the physical and chemical issues present and preserve this work for future exhibition and study. Determining an effective decision- making model based on a hierarchy of values was crucial before undertaking any conservation treatment, as there were several invested parties, each with a different perspective. The focus of this paper is the interplay of our responsibilities as conservators with the concerns of the artist, her gallery, her printer, and the owner to balance aesthetic vs. physical integrity of the artwork, reversibility of treatments, importance of record keeping while developing a balanced response within a world of rapidly disappearing traditional photographic papers.  相似文献   

在电子技术实验教学中培养学生的能力   总被引：1，自引：0，他引：1  

姜成果 《通化师范学院学报》2002,23(4):86-88

本对如何在电子技术实验教学中培养学生的能力提出了切实可行的方法。  相似文献   

计算机实验室管理之我见     

刘莞 《福建工程学院学报》2002,(4)

阐述计算机实验室开放过程中管理上存在的问题 ,提出了解决的方案。  相似文献   

民办高校加强实验室建设的现实意义和途径     

徐智德 《黄河科技大学学报》2006,8(4):9-11

我国国家承认学历的民办本专科院校已经解决了生存危机,正由圈地盖房、扩大规模转向以实验室建设为基础的办学条件的全面提升。实验室建设不仅是提高应用型本专科教育质量的基础建设,也是学校向高水平大学努力的必经之途。民办高校要统筹本校教学、科研、师资队伍建设的需要,认真规划、滚动推进实验室建设。国家也要使财政性教育经费投入多元化,与民办高校共建合格的实验室,促进各类高校和谐、持续地发展。  相似文献   

从玉米芯中提取糠醛的实验室制法     

王秀玲 《邢台职业技术学院学报》2006,23(5):90-91

从玉米芯中提取糠醛现已在工业上大批量生产。本文能探究了实验室制备糠醛的实验步骤及方法,以提高学生对有机化学实验的兴趣,培养学生的探求创新精神,增强环保意识,提高实验技能,降低实验成本的目的。  相似文献   

基于指纹识别技术的实验室开放管理系统     

韩知恩  周建春  张彬 《实验技术与管理》2006,23(12):85-87,95

介绍了指纹采集、比对在实验室开放管理系统中的用法，以及通过指纹的采集比对实现了学生的建档，实验台的分配、计时、控制及学生信息的查询、汇总。指纹技术的应用使得实验室开放管理更加方便、可靠、有效。  相似文献   

摄影文学还是文学摄影   总被引：1，自引：1，他引：1  

陈润兰 《株洲师范高等专科学校学报》2002,7(3):40-43,52

当前摄影文学讨论中所谓“摄影”、“文学”诸元素经“审美复合”已产生新质的观点值得商榷。因为摄影文学作品中“摄影”是目的 ,是主体 ,“文学”是工具 ,是附庸。它们根本未能化合 ,仍是两张皮。据此 ,“摄影文学”宜更名“文学摄影”。  相似文献