对黄潇潇2008年奥运会实现名次突破可能性的训练学思考     

梁法泽  王回民  侯玉灵  许世岩 《雁北师范学院学报》2007,(6)

文章从现代训练理论角度对黄潇潇在奥运会上夺得奖牌的可能性进行了分析,并据此对黄潇潇科学地确定其2008年奥运会比赛目标提出了一些训练学方面的思考,成绩高位目标是平、破53.30 s,低位目标是平、破54.10 s.黄潇潇在确定2008年奥运会竞技总目标时,重点放在“成绩目标“上;名次的高位目标是获得奖牌,低位目标是保证第5名,认为黄潇潇在专项技术、战术、体能、心理、节奏方面及对大赛的把握方面均有提高空间.  相似文献   

新出土简帛佚籍与中国教育史研究     

米靖 《教育研究》2003,(3)

半个多世纪以来 ,简帛佚籍不断出土问世 ,其中包含有不少重要的教育史料 ,这些史料给中国教育史研究提供了新的内容和领域 :第一 ,有望促成《老子》一书现其历史真面目 ,并使先秦黄老道家学派的著作与思想体系渐趋明朗 ,从而极大地推动关于先秦道家教育思想体系的确立与完善 ;第二 ,极大地丰富了研究孔子及其后学八派教育思想的史料 ,使加深对孔子教育思想的认识 ,弥补从孔子到孟子之间儒家教育思想长期存在的研究空白成为可能 ;第三 ,对于明确先秦两汉经学教育的细节有着举足轻重的作用 ;第四 ,重要字书《仓颉篇》的出土 ,为研究秦汉语文教育提供了极其重要的文献  相似文献   

基于FPGA技术的8B/10B信道编码设计     

郑红党  孙彦景  李松  刘辉 《实验技术与管理》2021,(3):40-44

该文在分析8B/10B编码原理的基础上,设计了改进型8B/10B编码方案。该编码在完成高速数据信道编码功能的同时,可另外提供一路实时低速信道。基于FPGA技术采用查表法实现了改进型编解码电路,通过仿真验证了该编码方案的有效性,并在Spartan6系列FPGA中进行了综合测试。结果表明,此编解码方法占用的FPGA逻辑资源少,编解码速度可达到上百MB/s。  相似文献   

科技成果转化政策效果的影响因素研究——基于湖北省“科技十条”政策的分析     

叶建木  熊壮 《科技管理研究》2016,(17):24-28

科技成果转化政策能够有效促进科技成果向现实生产力的转化,达到科技与经济的协调发展.科技成果转化政策受多方面因素影响.以湖北省“科技十条”政策为例,在分析其政策效果的基础上,结合相关文献,提取影响科技成果转化政策效果的7个因素,并通过构建影响因素的解释结构模型进一步分析影响因素的内在关系,结果表明政策执行审批程序复杂、效率低是现阶段影响科技成果转化政策效果的最直接因素,而地方政策与中央政策不协调、政策法律地位不强则是影响科技成果转化政策效果的最根本因素.对提升科技成果转化政策效果提出相关建议.  相似文献   

上海市2004年冬季城市大气气溶胶含Pb单颗粒物的来源查证   总被引：1，自引：0，他引：1  

李晓林  包良满  刘江峰  岳伟生  李燕  张桂林 《中国科学院研究生院学报》2007,24(5):688-691

采用质子微探针技术，分析单个大气气溶胶颗粒物。将微束质子激发X射线分析(Micro-PIXE)同计算机模式识别技术结合，查证上海市2004年冬季城市大气气溶胶PM10中含Pb单颗粒物的来源。结果在上海大气气溶胶PM10中识别出七种铅污染排放源，它们分别是：汽车尾气，钢铁工业排尘，燃煤烟尘，土壤扬尘，柴油车尾气，助动车尾气和水泥尘。其中，钢铁工业排尘和燃煤排尘是禁止使用有铅汽油后上海市地区大气铅污染的最主要排放源。  相似文献   

The value of innovation: The interaction of competition, R&D and IP     

Christine Greenhalgh 《Research Policy》2006,35(4):562-580

This paper analyses market valuations of UK companies using a new data set of their R&D and IP activities (1989-2002). In contrast to previous studies, the analysis is conducted at the sectoral-level, where the sectors are based on the technological classification originating from Pavitt [Pavitt, K., 1984. Sectoral patterns of technical change. Research Policy 13, 343-373]. The first main result is that the valuation of R&D varies substantially across these sectors. Another important result is that, on average, firms that receive only UK patents tend to have no significant market premium. In direct contrast, patenting through the European Patent Office does raise market value, as does the registration of trade marks in the UK for most sectors. To explore these variations the paper links competitive conditions with the market valuation of innovation. Using profit persistence as a measure of competitive pressure, we find that the sectors that are the most competitive have the lowest market valuation of R&D. Furthermore, within the most competitive sector (‘science based’ manufacturing), firms with larger market shares (an inverse indicator of competitive pressure) also have higher R&D valuations, as well as some positive return to UK patents. We conclude that this evidence supports Schumpeter by finding higher returns to innovation in less than fully competitive markets and contradicts Arrow [Arrow, K., 1962. Economic welfare and the allocation of resources for invention. In: Nelson, R. (Ed.), The Rate and Direction of Inventive Activity. Princeton University Press, Princeton], who argued that, with the existence of IP rights, competitive market structure provides higher incentives to innovate.  相似文献   

跨国公司在中国经营策略的变化及其思考     

郭睦庚  储冬红 《科技与管理》2003,5(4):1-3

中国加入WTO，跨国公司对中国公司的经营策略作了战略调整，加快了对中国的人才资源、市场资源的争夺，中国市场已进入了国际化竞争时代。针对这一深刻的变化，系统讨论了跨国公司近年来对中国经营策略的改变及其对中国本土企业所带来的影响，最后，提出了中国本土企业的应对策略，期望对中国本土企业的发展提供启发和参考。  相似文献   

Investigating the interaction and mutual dependence between science and technology     

Catari Vilela Chaves  Sueli Moro 《Research Policy》2007,36(8):1204-1220

Literature on the economics of science and technology (S&T) suggests not only that technological innovation demands the expansion of the institutional borders between universities, research institutes, industrial companies and the financial system, but also that science leads as well as follows technology. Medical innovation in particular is very dependent on scientific research, which represents a source of information that impels the productive sector. The latter introduces a series of questions that motivate the researchers in their attempt to understand how the human body reacts to certain products and therapies. This paper analyses the pattern of S&T interaction for both the national system of innovation (NSI) and the health innovation system. The panel data and simultaneous equations models analyze the interaction between S&T. The theory about the existence of a mutual dependence between them has been confirmed, which means that science moves technology and technology also influences scientific development. The estimated models, which use data from scientific papers and patents as proxies of science and technology, represent just the tip of the iceberg called NSI, known as a multifaceted and complex institutional arrangement.  相似文献   

Mixed control of uncertain jumping time-delay systems     

Magdi S. Mahmoud  Fouad M. AL-Sunni  Yan Shi   《Journal of The Franklin Institute》2008,345(5):536-552

In this paper, we investigate a class of linear continuous-time systems with Markovian jump parameters. An integral part of the system dynamics is a delayed state with time-varying and bounded delays. The jumping parameters are modeled as a continuous-time, discrete-state Markov process. Employing norm-bounded parametric uncertainties and utilizing the second-method of Lyapunov, we examine the problem of designing a mixed controller which minimizes a quadratic performance measure while satisfying a prescribed -norm bound on the closed-loop system. It is established that sufficient conditions for the existence of the mixed controller and the associated performance upper bound could be cast in the form of linear matrix inequalities.  相似文献   

The innovative performance of in-house and contracted R&D in terms of patents and utility models     

Pilar Beneito 《Research Policy》2006,35(4):502-517

The standard empirical framework for analysing the R&D-patents relationship is widened both by examining the different role of in-house and contracted R&D in the innovative performance of firms, and by considering patents and utility models counts as measures of innovation output. Patents and utility models are considered to approximate for significant and incremental innovations, respectively. Applying count data econometrics to a panel data set of Spanish manufacturing firms surveyed in the period 1990-1996, a transcendental production function is estimated, which allows for non-constant elasticities of the R&D inputs. The results indicate that significant innovations are mainly gestated in-house, whereas contracted R&D seems more orientated towards innovations of incremental nature.  相似文献