明确定位转变职能发挥优势--在中国广播电视协会职能转变培训研讨班上的讲话(摘要)     

胡占凡 《中国广播电视学刊》2005,(12):6-8

中国广播电视学会改为中国广播电视协会，是广播电视系统一件大事，如何准确地给协会定位，如何适应学会转为协会以后职能的变化，在理论上，认识上有好多问题需要解决。其中，需要重点研究的就是行业自律和行业维权。  相似文献   

智慧院所背景下企业档案工作面临的新形势与新发展     

胡金涛 《档案与建设》2018,(7):31-33

国家军民融合战略的逐步实施对传统军工科研院所带来了冲击,同时也带来了军用技术转型升级的巨大机会.当前,我国军工科研院所广泛开展智慧院所建设,这给档案工作提出了新的要求.论文分析了智慧院所背景下企业档案工作面临的新形势,探讨了智慧院所背景下企业档案工作的发展路径,以期为智慧时代军工科研院所以及其它企业档案工作发展提供借鉴.  相似文献   

新时代下学术期刊功能的转变:构建新型智库期刊     

徐雅雯  胡浩志 《出版科学》2018,26(3):40-44

在新时代背景下,学术期刊作为智库研究成果的传播平台,应该加快转变自身的功能定位,并逐步探索建设智库期刊的成长之路.本文在分析新型智库特点的基础上,结合学术期刊在知识引领方面的严谨性、科学性、专业性和权威性,引入智库期刊的概念.为顺应新时代发展的要求,学术期刊不仅要发挥学术传播、交流、评价和引领的作用,更要实现服务于智库发展的功能.通过开设智库专栏、提高选题系统性、承接国家研究项目、加强期刊与期刊以及期刊与智库间的交流合作等方法,学术期刊可以逐步实现服务于智库建设的功能.  相似文献   

A new approach to explore the knowledge transition path in the evolution of science & technology: From the biology of restriction enzymes to their application in biotechnology     

Xiaojun Hu  Ronald Rousseau 《Journal of Informetrics》2018,12(3):842-857

In this contribution, we develop a new approach to explore the process of knowledge transition from discovery-oriented science to technological fields, via applications-oriented research, including a mediator set. This trajectory is referred to as the D-A-T trajectory. It is shown how it can be constructed and measures are proposed to characterize the relational strength among different environments (discovery oriented research, applications-oriented research and patents) and the speed of evolution. Our approach is illustrated by a case study of three fundamental restriction enzymes articles. Among other results we found that 387 patents cited 124 of the 988 articles (a share of 12.55%) in the mediator set. Defining the non-patent references (NPR) transition rate as the number of citing patents divided by the number of articles in the mediator set yields a value 0.392. Our results suggest that the D-A-T path acts as a backbone and reveals important “invisible contributions” of an original scientific work during its evolution from discovery oriented research to outside academia. Our contribution provides a useful tool for bridging the existing gap in detecting the transition of knowledge between science and technology.  相似文献   

Four pitfalls in normalizing citation indicators: An investigation of ESI’s selection of highly cited papers     

Zhigang Hu  Wencan Tian  Shenmeng Xu  Chunbo Zhang  Xianwen Wang 《Journal of Informetrics》2018,12(4):1133-1145

InCites Essential Science Indicators is becoming increasingly used to identify top-performing research and evaluate the impact of institutes. Unfortunately, our study shows that ESI indicators, as well as other normalized citation indicators, have the following flaws. First, the publication month and the online-to-print delay affect a paper’s probability of becoming a Highly Cited Paper (HCP). Papers published in the earlier months of the year are more likely to accumulate enough citation counts to rank at the top 1% compared with those published in later months of the year. Papers with longer online-to-print delays have an apparent advantage for being selected as HCPs. Research field normalizations lead to the third pitfall. Different research fields have different citation thresholds for HCPs, making research field classification important for a journal. In addition, the uniform thresholds for both articles and reviews in ESI affect the reliability of HCP selection because, on average, reviews tend to have higher citation rates than articles. ESI’s selection of HCPs provides an intuitive feel for the problems of normalized citation impact indicators, such as those provided in InCites and SciVal.  相似文献   

活用陶行知教育思想,让英语课堂更高效     

胡梅芳 《科教文汇》2015,(2):129-130

在不断探索和实践新课改的理念中,提高英语课堂教学的有效性主要通过以下几个途径:认真备课作基础、激情导入开好头、合作学习同进步、师生融洽效率高、激活思维巧提问、及时表扬多激励。  相似文献   

如何在声乐教学中培养学生的学习兴趣     

胡俊贤 《南昌教育学院学报》2011,(9):49+51-49

声乐是一门综合艺术,学习者要有坚忍不拔的毅力,持之以恒的精神才能获得美妙的声音。所以激发学生的学习兴趣就成为非常重要的环节,生动的语言、明确的学习目标、良好的师生情感、良好的歌唱心理素质、丰富细腻的情感体验都是提高学习兴趣的有效途径。  相似文献   

基于Canvas Network开放数据集的MOOC学习分析     

胡红梅  宗阳 《北京广播电视大学学报》2017,(1)

大规模学习者的参与使MOOC平台记录了海量学习者行为数据,这为基于大数据进行学习分析提供了基础.基于Canvas Network发布的开放数据集特点,对数据集字段进行统计分析,力图全面展现MOOC学习者实际学习状况.在统计分析的基础上,选取有学习者自我评价数据的样本,分析不同类型学习者在学习目标、每周期望学习时间、学习行为和学习成绩上的差异性.  相似文献   

基于LBS&GIS的旅游资源普查、评价与可视化系统   总被引：1，自引：0，他引：1  

李鹏  王英杰  虞虎  马楠 《中国科学院大学学报》2017,34(6):692-700

  相似文献   

Precision measurement of the Newtonian gravitational constant     

Chao Xue  Jian-Ping Liu  Qing Li  Jun-Fei Wu  Shan-Qing Yang  Qi Liu  Cheng-Gang Shao  Liang-Cheng Tu  Zhong-Kun Hu  Jun Luo 《国家科学评论(英文版)》2020,7(12):1803

The Newtonian gravitational constant G, which is one of the most important fundamental physical constants in nature, plays a significant role in the fields of theoretical physics, geophysics, astrophysics and astronomy. Although G was the first physical constant to be introduced in the history of science, it is considered to be one of the most difficult to measure accurately so far. Over the past two decades, eleven precision measurements of the gravitational constant have been performed, and the latest recommended value for G published by the Committee on Data for Science and Technology (CODATA) is (6.674 08 ± 0.000 31) × 10⁻¹¹ m³ kg⁻¹ s⁻² with a relative uncertainty of 47 parts per million. This uncertainty is the smallest compared with previous CODATA recommended values of G; however, it remains a relatively large uncertainty among other fundamental physical constants. In this paper we briefly review the history of the G measurement, and introduce eleven values of G adopted in CODATA 2014 after 2000 and our latest two values published in 2018 using two independent methods.  相似文献