2000-2020 年中国森林火灾研究进展分析

为了解我国森林火灾相关的发展现状和研究方向。对中国知网（CNKI）数据库中2000-2020年的林火研究文献运用文献计量法进行统计分析,借助CiteSpace绘制知识图谱,并采用关键词聚类、关键词突现和时线图相结合的方法来分析前沿热点关键词。结果表明,森林火灾论文研究主题主要为森林火灾发生规律及影响因素、森林火灾管理、森林火灾预防、大兴安岭;作者之间需加强合作研究;未来研究热点可总结为森林防灭火研究,包括林火预测预报、生物防火林带、森林火险。研究对结果进行了分析,可使学者加深对这一领域的整体认识,并对未来研究热点进行展望。     

Experimental methods in chemical engineering: Thermogravimetric analysis—TGA

Thermogravimetric analysis (TGA) is a quantitative analytical technique that monitors the mass of a sample from 1 mg to several g as a furnace ramps temperature to as high as 1600°C under a stable or changing gas flow. The first gravimetric test was in 27 BC when Vitruvius measured limestone's change of mass as it calcined to lime. In modern chemical engineering, researchers apply the technique to derive conversions, kinetics, and mechanisms for any process with a change of mass by isothermal, non-isothermal, and quasi-isothermal methods. The mass drops as the sample decomposes, volatile compounds evaporate, or the oxidation state decreases, while in reactive environments (with O₂, for example), the mass of transition metals may increase. TGA is incapable of detecting phase transitions, polymorphic transformations, or reactions for which mass is invariant. DSC or DTA couple with TGA to help deconvolute a DSC plot by separating physical changes from chemical changes. Evolved gas analysis techniques monitor the gaseous products exiting the TGA furnace on-line as the temperature ramps. A bibliometric map of keywords from articles citing TGA indexed by Web of Science in 2016 and 2017 identified five research clusters: nanoparticles, performance, and films; crystal structures, acid, and oxidation; composites, nanocomposites, and mechanical properties; kinetics, pyrolysis, and temperature; and adsorption, water and wastewater, and aqueous solutions. This review provides an overview of the basic principles of modern TGA.     

Global thrust on fuel cells and their sustainability – an assessment of research trends by bibliometric analysis

We presented a bibliometric analysis of publications on global scientific and technological research in the field of fuel cell based on the data from Science Citation Index Expanded, Web of Science from 1992 to 2011, to provide insights into the characteristics, research activities and technological breakthrough and identify patterns and tendencies. Articles were assessed by many aspects, including model regression fitting the trend of publication outputs, distribution of words in source title, author keyword and KeyWords Plus. By synthetically analysing the keywords, it can be inferred that application of fuel cell ranges from automobiles to consumer electronic devices. Research especially related to ‘proton exchange membrane fuel cell’, ‘direct methanol fuel cell’, ‘molten carbonate fuel cell’, ‘solid oxide fuel cell’ and ‘catalysts’ is the orientation of the fuel cell research in the twenty-first century.     

The invisible college of cluster research: a bibliometric core–periphery analysis of the literature

ABSTRACT

This paper explores the evolutionary trajectories of cluster research, building upon the sociology of science concept of the invisible college, and it undertakes a core–periphery analysis of the literature. We build a database that includes 8,381 articles, collected from Web of Science, that cite the foundational works of cluster research, and we perform a longitudinal analysis of its evolution from 1985 onward, identifying the core and periphery, in terms of keywords and concepts, for each period (six-year window). We find evidence that cluster research has a core–periphery structure. Literature develops thanks to new inputs from the periphery, which increases over time as the core progressively shrinks. The periphery becomes fragmented and is characterised by subgroups of small communities. Drawing on the metaphor of the invisible college, we argue that this evolutionary trajectory is not exclusive of the cluster but might possibly characterise other scientific concepts.     

《武汉理工大学学报·信息与管理工程版》2005—2011年载文状况统计分析

以2005—2011年《武汉理工大学学报·信息与管理工程版》出版的2 386篇论文为研究对象,对其作者群状况及其地域分布数、机构分布数、总被引频次、影响因子、他引率、基金论文比和平均引文数等进行了统计分析。指出应依托相关学科,面向社会,突出信息与管理工程的特色,不断提升其学术水平和影响力。     

国内信息可视化研究进展

论文以CNKI收录的1996-2012年间360篇信息可视化文献为研究对象,用文献计量、社会网络分析法,从文献年代分布、基金资助分布、来源期刊分布、作者及其合作、研究机构及其合作、研究热点及其演化等方面可视化揭示了国内信息可视化研究进展。     

水利文化传承与发展的轨迹——基于1980-2012年水利志的分析

水利志是传承水利文化,弘扬和发展水利文化的重要载体.基于网络公共信息资源和传统文献资源,对新中国编修的水利志进行了全面系统的梳理.在此基础上,采用文献计量学的研究手段,对30余年来水利志发展历程、特点和原因进行了分析,从一个侧面描述了水利文化传承和发展的轨迹.     

Emerging trends and new developments in Lancang‐Mekong River: A bibliometric visualization analysis

The purpose of this study is to outline global performance, and to quantitatively evaluate the current research field hot spots, and the future trends about the Lancang‐Mekong River (LMR). Bibliometric methods are used to analyze 3,924 records retrieved from the collection of the Web of Science Core (WoS). The performance of publications, categories, countries, institutes, research hot spots and trends is analyzed in this study by applying CiteSpace and VOSviewer tools. The results revealed that publications about the LMR field have been increasing rapidly since the beginning of the 21st century. The research pertaining to LMR is mainly in the fields of environmental sciences & ecology, water resources, geology, engineering and agriculture. Vietnam, The People's Republic of China, The United States of America, Japan and Thailand get higher rankings in paper output, and Can Tho University, the Chinese Academy of Sciences, Beijing Normal University and the University of Tokyo achieve a high ranking on LMR research. In addition, further studies in research frontiers have revealed that health, security, climate change and international waters will become the new and popular directions and trends in the LMR research.     

基于文献计量的国际河流水资源研究发展态势

以ISI Web of Science论文数据库为数据源,采用美国汤姆森科技信息集团开发的专业数据分析工具TDA(Thomson Data Analyzer)对1951年至2011年(数据入库时间至2011年)国际河流水资源研究研究论文进行数据挖掘和分析.结果表明:国际河流水资源研究持续增长,特别是近20年增速显著;美国在该领域居于引领优势;国际河流水资源研究主要集中于发达国家所属国际河流的可持续发展和水资源管理、关注河流与环境变化之间的问题、河流的跨界及水资源综合管理等.建议密切关注国际河流水资源的发展态势与进展,鼓励我国环境生态学家、水资源学家、生物学家、地质学家、气象学家加强交流合作开展研究,为我国赢取更广泛参与国际河流事务的发展空间.     

大数据分析方法在战略性新兴产业技术预见中的应用

作为创新战略管理工具,技术预见受到越来越多的重视。学术界对技术预见方法及其应用进行了大量的相关研究,但是对不同路径的新兴产业进行技术预见,尤其针对发展中国家的追赶型产业创新进行技术预见,仍是亟待深入探讨的理论难题。另外,大多数技术预见仍然以德尔菲法专家分析法为主,其制定过程主要还是依赖专家的知识经验,而缺乏客观的大数据支撑,在分析研究上往往偏向主观而缺乏信度和效度。本文将探索专利、文献等大数据应用于支撑我国新兴产业技术预见的理论和方法研究。