热力循环及总能系统学科发展战略思考     

纪军  刘涛  金红光 《中国科学基金》2007,21(6):327-332

热力循环与总能系统是本世纪能源与环境科学的主要议题之一,也是在国家中长期科技规划中位于优先领域的需要关注的重点。本文分析了该学科的地位和作用,指出了学科交叉的发展特点,提出了学科发展方向:能的梯级利用与热力循环创新、能量释放的新机理、中低温能源转换利用与正逆耦合循环、多能源综合互补系统、控制污染排放的新途径。本文提出的热力循环与总能系统发展战略旨在开辟节约能源、能源与环境协调发展的新方向。  相似文献   

粤港澳大湾区科技创新能力空间结构演变与影响因素探究     

王盟迪 《科技管理研究》2019,39(18)

粤港澳大湾区已经成为我国创新驱动发展的桥头堡,助力我国加快提高科技创新能力。本文选取粤港澳大湾区“9+2”城市历年科技创新能力相关数据构建成面板数据集。为了能够进一步分析湾区区域间的科技创新能力差异,将湾区划分成西湾、中湾、东湾和港澳湾。基于空间差异、空间自相关以及空间计量的分析理论与方法,借助GeoDa、ArcGIS和Stata数据分析软件,深层次地探究粤港澳大湾区科技创新能力的空间结构演变及其影响因素。  相似文献   

中文科技期刊专刊的策划与出版实践——以《生物工程学报》为例     

陈宏宇  郝丽芳 《中国科技期刊研究》2016,27(6):659-663

【目的】通过梳理《生物工程学报》近7年来专刊的策划和出版实践,一方面总结出版专刊的成功经验,同时也为国内期刊同行提供借鉴与参考。【方法】详述《生物工程学报》在专刊选题策划及组织形式方面的做法,并通过中国知网(CNKI)的统计数据,追踪比较了该刊2009—2011年间出版的专刊与普通发文的被引频次。【结果】结果表明,组织专刊既可以扩大稿源,又可以提升论文质量、增强期刊学术影响力。【结论】专刊的策划与出版是现阶段提升科技期刊学术质量行之有效的方式之一。  相似文献   

我国科技期刊DOI使用现状分析——以大气科学类2014年版CJCR核心期刊为例     

申乐琳 《中国科技期刊研究》2016,27(6):624-628

【目的】找出大气科学类期刊DOI注册和应用中存在的问题并及时解决,充分发挥DOI在科技期刊的作用,普及DOI检索在科研中的应用。【方法】调查分析2014版《中国科技期刊引证报告（核心版）》大气科学类核心期刊使用DOI的现状,包括DOI的注册及标注、文后参考文献著录,以及DOI的解析情况。【结果】大气科学类期刊DOI注册较成熟,但是DOI的应用和宣传远远不够,特别表现在文后参考文献的著录、首页的推荐引用格式,以及解析不准确等方面。【结论】提出科技期刊应做好DOI注册的后期工作,并加大DOI的宣传力度,提高DOI解析的正确性,在DOI的应用方面早日与国际接轨。  相似文献   

The balance of knowledge flows     

Giovanni Abramo  Ciriaco Andrea D’Angelo  Massimiliano Carloni 《Journal of Informetrics》2019,13(1):1-9

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Measuring scientific contributions with modified fractional counting     

Gunnar Sivertsen  Ronald Rousseau  Lin Zhang 《Journal of Informetrics》2019,13(2):679-694

We develop and propose a new counting method at the aggregate level for contributions to scientific publications called modified fractional counting (MFC). We show that, compared to traditional complete-normalized fractional counting, it eliminates the extreme differences in contributions over time that otherwise occur between scientists that mainly publish alone or in small groups and those that publish with large groups of co-authors. As an extra benefit we find that scientists in different areas of research turn out to have comparable average contributions to scientific articles. We test the method on scientists at Norway’s largest universities and find that, at an aggregate level, it indeed supports comparability across different co-authorship practices as well as between areas of research. MFC is thereby useful whenever the research output from institutions with different research profiles are compared, as e.g., in the Leiden Ranking. Finally, as MFC is actually a family of indicators, depending on a sensitivity parameter, it can be adapted to the circumstances.  相似文献   

Ranking scientific articles based on bibliometric networks with a weighting scheme     

Yu Zhang  Min Wang  Florian Gottwalt  Morteza Saberi  Elizabeth Chang 《Journal of Informetrics》2019,13(2):616-634

As the volume of scientific articles has grown rapidly over the last decades, evaluating their impact becomes critical for tracing valuable and significant research output. Many studies have proposed various ranking methods to estimate the prestige of academic papers using bibliometric methods. However, the weight of the links in bibliometric networks has been rarely considered for article ranking in existing literature. Such incomplete investigation in bibliometric methods could lead to biased ranking results. Therefore, a novel scientific article ranking algorithm, W-Rank, is introduced in this study proposing a weighting scheme. The scheme assigns weight to the links of citation network and authorship network by measuring citation relevance and author contribution. Combining the weighted bibliometric networks and a propagation algorithm, W-Rank is able to obtain article ranking results that are more reasonable than existing PageRank-based methods. Experiments are conducted on both arXiv hep-th and Microsoft Academic Graph datasets to verify the W-Rank and compare it with three renowned article ranking algorithms. Experimental results prove that the proposed weighting scheme assists the W-Rank in obtaining ranking results of higher accuracy and, in certain perspectives, outperforming the other algorithms.  相似文献   

Predicting citation counts based on deep neural network learning techniques     

《Journal of Informetrics》2019,13(2):485-499

With the growing number of published scientific papers world-wide, the need to evaluation and quality assessment methods for research papers is increasing. Scientific fields such as scientometrics, informetrics, and bibliometrics establish quantified analysis methods and measurements for evaluating scientific papers. In this area, an important problem is to predict the future influence of a published paper. Particularly, early discrimination between influential papers and insignificant papers may find important applications. In this regard, one of the most important metrics is the number of citations to the paper, since this metric is widely utilized in the evaluation of scientific publications and moreover, it serves as the basis for many other metrics such as h-index. In this paper, we propose a novel method for predicting long-term citations of a paper based on the number of its citations in the first few years after publication. In order to train a citation count prediction model, we employed artificial neural network which is a powerful machine learning tool with recently growing applications in many domains including image and text processing. The empirical experiments show that our proposed method outperforms state-of-the-art methods with respect to the prediction accuracy in both yearly and total prediction of the number of citations.  相似文献   

游泳训练科学化水平的分析与展望     

彭建才  陈峰 《福建体育科技》2011,30(3):30-32

本文对我国游泳训练的规律以及训练方法等方面做了分析和归纳,从中找出可借鉴的成功游泳训练经验,对游泳科学训练的发展提出了建议,希望能为游泳科学训练提供参考依据。  相似文献   

以科学发展观为指导改革高校体育教学模式     

覃寅寅 《湖北体育科技》2011,30(2):230-232

充分发挥高校体育教育在培养人才全面发展中的作用,必须以科学发展观为指导,改革技能掌握式传统教学模式,建立学生身心素质全面发展,教学各个环节相互协调,各方面齐抓共管,教师积极进取的高校体育教学模式.  相似文献