使用电子护具对跆拳道运动的影响   总被引：2，自引：0，他引：2  

费瑛  宋华 《吉林体育学院学报》2009,25(1):118-118,120

使用电子护具能维护跆拳道比赛的相对公平,是对跆拳道技、战术训练的约束和引导,也给世界各队重新排定座次提供了机会,但其在自身技术、对比赛的负面影响、引导和推进技术发展的方向、对跆拳道项目传统内涵的继承和发展等方面还存在需要改进和提高的地方。建议：中国队尽快研究和总结使用电子护具对跆拳道技、战术的影响,以便尽早适应,并在今后的比赛中占据优势。  相似文献   

Ara Irititja and Ara Winki in the APY Lands: connecting archives to communities through mobile apps on portable devices     

Dora Dallwitz  John Dallwitz 《档案与原稿》2019,47(1):35-52

ABSTRACT

Ara Irititja is an enduring and multifaceted project that returns and collectively documents Anangu historical material and preserves it for the future. This paper explains why the archival project has been so effective in engaging Indigenous communities and what it is doing to ensure its longevity. In particular, the paper provides details about a new pilot project which has resulted in a software application entitled Ara Winki No. 1, ‘a whole lot of stories’, specifically for use on portable electronic devices, which delivers historical and cultural content of relevance to Anangu in local languages and works to connect the existing archive to younger generations.  相似文献   

Physical movement demands of elite-level netball match-play as measured by an indoor positioning system     

Edward R. Brooks  Amanda C. Benson  Aaron S. Fox  Lyndell M. Bruce 《Journal of sports sciences》2020,38(13):1488-1495

ABSTRACT

Physical movement demands in elite netball match-play have been limited to notational analysis or accelerometer-derived measures, due in part to the indoor environment in which they are played. Commercially available local positioning systems (LPS) using ultra-wideband communication have been designed to bring similar capabilities as global positioning systems (GPS) to indoor environments. This study aims to quantify both spatiotemporal and traditional accelerometer-derived measures, to assess the movement demands of all playing positions, during Australian national netball league matches. Total distance, metreage per minute, acceleration density, acceleration density index, acceleration load, jumps, velocity bands, acceleration bands and PlayerLoad variables have been presented for each position. Mean total distance-covered in match-play differed substantially between positions. Centre position accumulated the highest mean distance (5462.1 ± 169.4 m), whilst the Goal Shooter consistently covered the lowest mean distance (2134 ± 102.6 m). Change of direction relative to movement area was highest for the two most restricted positions based on average acceleration per 10 m covered during match-play (Goal Shooter; 7.21 ± 0.88 m · s ^{? 2} and Goal Keeper; 6.75 ± 0.37 m · s ^{? 2}, remaining positions; 5.71 ± 0.14 m · s ^{? 2}). The positional profiles outlined in this study can assist skill and conditioning coaches to prescribe training sessions that will optimise the athlete’s physical preparation for the demands of competition.  相似文献   

汉语与英语衔接手段对比研究     

薛立文 《桂林师范高等专科学校学报》2010,24(2):120-124

英语中最常见的衔接手段有指称、替代、省略、连接和词汇衔接。汉语衔接手段也可大致分为这几类,但是与英语衔接手段存在着不小的差异。文章通过英汉语篇中大量的实例分析,对每种英汉衔接手段进行详细的对比研究,探讨英汉衔接手段的差异。  相似文献   

泛在环境下图书馆服务创新研究   总被引：1，自引：0，他引：1  

杨灵芝 《情报科学》2012,(3):347-351,386

随着信息技术、多媒体技术和网络技术的发展,泛在环境下学习渐渐成为社会研究的热点之一。在这种环境的影响下,传统的图书馆服务也要随之作出调整。本文分三个部分,第一部分讨论泛在环境对图书馆服务的影响,第二部分论述了泛在环境下用户信息需求的特点,第三部分针对泛在环境下用户需求的特点探讨图书馆服务创新。  相似文献   

Efficient page layout analysis on small devices     

Eun-jung Han  Chee-onn Wong  Kee-chul Jung  Kyung-ho Lee  Eun-yi Kim 《浙江大学学报(A卷英文版)》2009,10(6):800-804

Previously we have designed and implemented new image browsing facilities to support effective offiine image contents on mobile devices with limited capabilities： low bandwidth, small display, and slow processing. In this letter, we fulfill the automatic production of cartoon contents fitting small-screen display, and introduce a clustering method useful for various types of cartoon images as a prerequisite stage for preserving semantic meaning. The usage of neural networks is to properly cut the various forms of pages. Texture information that is useful for grayscale image segmentation gives us a good clue for page layout analysis using the multilayer perceptron （MLP） based x-y recursive algorithm. We also automatically frame the segment MLP using agglomerative segmentation. Our experimental results show that the combined approaches yield good results of segmentation for several cartoons.  相似文献   

Analysis of the Language Features of Advertising English     

刘心宇 《海外英语》2014,(12)

In this paper, the language features of advertising English are presented and analyzed from two aspects:the lexical usage and the rhetoric devices. I hope that these features of advertising English can...  相似文献   

The Analysis of The Happy Prince Based on Corpus     

李慧 《海外英语》2014,(18):177-178,182

As a new and rising discipline, Corpus Linguistics can be applied in the field of literary criticism to analyze literary text.Analyzing“The Happy Prince”written by the famous British writer Oscar Wilde with corpus can help reveal how the plot, portraits of people and the rhetorical devices express the theme of the story.  相似文献   

分子材料与器件          下载免费PDF全文

朱道本  胡文平  张德清 《中国科学院院刊》2011,(Z1):74-79

分子材料和器件主要探讨共轭有机、高分子的设计、合成,研究其聚集态结构、分子之间相互作用,光电磁物理性质及相关现象,制备器件并研究其性能,是多学科交叉前沿研究领域。该领域发展迅速,取得了许多重要突破,但仍然蕴藏着重要创新机遇。经过几代人的努力,我国在该领域已有很好的研究基础,已经占有一席之地。  相似文献   

Mind over Matter: Using Technology to Improve Wellness     

Ariel F. Pomputius 《Medical reference services quarterly》2018,37(2):177-183

Wellness—the balance of mental, emotional, spiritual, and physical health for the overall health benefit of the individual—is a growing concern, particularly for professionals in the medical field. Although wellness is usually viewed in opposition to technology, more digital devices and mobile applications are emerging to support wellness for health consumers. This wellness technology seeks to improve the overall health of the user through increasing calm and decreasing stress. This column will explain what wellness technology is, concerns over its widespread application, examples of wellness devices on the market currently, and an overview of where it is being applied in libraries.  相似文献