实验探究锥形POF的光功率的传输特性     

吴丽双 《泉州师范学院学报》2006,24(6):19-23

通过实验研究了锥形聚合物光纤(POF)输出端光场强度分布呈现中心强、周边弱的模式分布特征,无论激光从大端输入、小端输出还是从小端输入、大端输出,都观察到小端的高阶模相对光强度明显低于大端,证明了锥形POF可以使大芯径POF和小芯径石英光纤的过渡连接得到良好的匹配.分别以大小端作为输入端口,研究了圆锥角度以及耦合长度对过渡器的光功率传输效率的影响,得出了POF过渡器最佳圆锥角度.yh  相似文献   

高师钢琴即兴伴奏综合能力浅述     

韩妮曼 《涪陵师范学院学报》2004,20(5):116-117

钢琴即兴伴奏除了应具备扎实的技能功底、纯熟的钢琴技巧、丰富的和声基础和多变的织体外，还应深入的分析理解伴奏的作品，从而达到演奏的相互配合。  相似文献   

University Library Strategy Development: A Conceptual Model of Researcher Performance to Inform Service Delivery     

Alexia Maddox  Linlin Zhao 《New Review of Academic Librarianship》2017,23(2-3):125-135

ABSTRACT

This case study presents a conceptual model of researcher performance developed by Deakin University Library, Australia. The model aims to organize research performance data into meaningful researcher profiles, referred to as researcher typologies, which support the demonstration of research impact and value. Three dimensions shaping researcher performance are identified: researcher practices, career stage, and activity space. We argue this model serves two practical functions for Deakin Library and librarians: (a) to develop a holistic understanding of what constitutes researcher performance in the contemporary higher education environment in Australia; and (b) to translate this understanding into a service needs diagnostic tool for the development of the Research Metrics and Advisory Service (ReMAS), a strategic library service providing systematic research metrics support to Deakin researchers, schools, and faculties. We argue that both the model and its practical applications may be adapted by other academic libraries within their national and higher education contexts.  相似文献   

The CSR green halo effect on the corporate–public communication: an experimental study     

Dong Dong  Hao-chieh Chang  Tianjiao Wang 《亚洲交流杂志》2017,27(2):213-230

Environmental corporate social responsibility (CSR) has been a popular practice among corporations. However, the mechanism and effectiveness of environmental CSR in affecting corporate–public communication are still unclear. Against the theoretical backdrop of the ‘halo effect’ and through a controlled experiment with 742 participants from Hong Kong and mainland China, we find that: if a company’s environmental CSR activity receives higher support from the consumers, it is less likely for consumers to avoid advertisements endorsed by the company. The CSR green halo effect therefore exists. Moreover, consumers’ nationality and their three preexisting attitudes (general environmental CSR support, environmental beliefs, and favorability of products’ country of origin) are important moderators of the green halo effect and need to be considered in practice.  相似文献   

文献计量方法在大学小团体层面的基础研究绩效评价的应用     

花芳  管楠祥  李风侠  管翠中  赵军平 《图书情报工作》2017,61(4):108-114

[目的/意义] 对文献计量方法在小团体微观层面的研究绩效评价进行实证研究。[方法/过程] 分析科研成果用科学文献表征的依据,讨论被引次数作为研究成果价值测度的合理性与局限性。在此基础上,针对大学院系微观层面如个体研究者、小团体的研究绩效评价问题,提出同方向小团体基础研究绩效评价标准构造方法及指标。作为方法的应用,对清华大学航天航空学院5个研究方向的基础研究绩效水平进行评估。[结果/结论] 基于文献计量得到的结果获得评价对象的认可。但本文所提出的方法在排除自引、以及计入评价对象的高被引文献方面仍有改进空间。  相似文献   

关于民办高校法人财产权的思考——基于45所民办院校法人财产状况的调查分析   总被引：1，自引：1，他引：1  

董圣足 《教育发展研究》2007,(Z2)

本文通过对45所民办高校的问卷调查,从理论和实证两个层面对民办高校法人财产权问题进行了理性思考和实践探索,并就如何妥善落实民办高校法人财产权问题提出了相应的对策建议。  相似文献   

"三重叠合"下的日本公司治理     

王强  何自力 《天津师范大学学报(社会科学版)》2004,(4):5-10

日本公司治理结构的独特性主要是由以下三种叠合关系共同作用的结果:股权关系和债权关系的叠合;股权关系和商务关系的叠合;隐性股权关系和雇佣关系的叠合。这三种"叠合"关系直接决定了日本公司的治理结构及其治理绩效。随着全球一体化、金融自由化和通信网络化的发展,企业竞争环境明显呈现出市场无边界化、经济无国界化、规则无差别化的新特点,传统的日本公司治理结构已明显不适应新的经济环境,必须适时重组和再造。  相似文献   

Performance strategies of US Olympians in practice and competition     

Marcus K. Taylor  Daniel Gould  Cristina Rolo 《High Ability Studies》2008,19(1):19-36

Until recently, no self‐report instruments have examined psychological skills use in both practice and competition. In light of the significant role of practice in sport performance outcomes, a need exists to measure these skills in both domains. This study was designed to investigate differences in performance strategies of US Olympians in both practice and competition. The Test of Performance Strategies was administered to 176 US participants in the 2000 Sydney Olympic Summer Games. Discriminant function analyses demonstrated significant differences between medalists and nonmedalists in both the competition and practice performance strategies. Furthermore, significant gender and age differences were identified for competition strategies only. The 16 subscales of the TOPS, with two exceptions, create an internally stable instrument with moderate predictive ability relative to quality of sport performance, gender, and age in this elite sample of athletes.  相似文献   

Predicting students＇ performance on agricultural science examination from forecast grades     

Thobega Moreetsi Masole Trust Mbako 《美中教育评论》2008,5(10):45-51

  相似文献   

对学校生活中仪式的道德审视   总被引：1，自引：0，他引：1  

倪辉 《江苏教育研究》2008,(2):39-42

道德是学校生活中仪式背后所蕴含的深层意义所在。学校生活中仪式的真正功能在于为道德教育目标服务。仪式将塑造学生对尊卑、权力的认识．进而影响对道德的理解与判断。仪式操演不当会使仪式的道德教育功能衰减。仪式经常表现出对意识形态的迎合或被意识形态强力征用,从而导致道德教育内涵的窄化。  相似文献