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1.
蔡濂  王洪峰 《矿物岩石》2002,22(3):101-102
依据《中国科技论文统计与引文分析数据库》(CSTPC),采用文献计量的方法对《矿物岩石》载文被CSTPC来源期刊的引用情况进行统计分析及评价;其所载文献质量较高,作者群的地域分布较广,已形成具有自己风格和特色且相对稳定的研究体系;在中国地质学界有一定影响,不仅是我国地质科学研究领域最重要的信息源之一。也是我国主要的地质学核心期刊。  相似文献   

2.
国际全球变化研究发展态势文献计量评价   总被引:1,自引:0,他引:1  
全球变化研究是国际上地球系统综合研究的重大跨学科研究领域.随着全球环境问题的日益突出,国际上先后组织发起了全球环境变化研究的四大科学计划WCRP、IGBP、IHDP、DIVERSITAS及其组成的地球系统科学联盟ESSP,开展对全球变化和地球系统科学的研究.当前,全球变化问题不仅是科学界关注和研究的问题,也是政治界、经济界都关注的重大问题.科技文献能够反映科学前沿的发展动态.对SCIE和SSCI数据库收录的全球变化研究文献进行统计,从文献计量学的角度,分析国际全球变化研究领域的发展态势,了解中国全球变化研究的国际影响力.可以看出:国际上全球变化研究的论文数量一直呈增长趋势,以地球科学多学科、生态学、环境科学、自然地理学、植物学等学科领域为主.中国自2000年以来在该领域的发文数量增长较快,特别是中国科学院的发文量已进入国际前列,但中国在该研究领域尚缺少高影响力的论文.  相似文献   

3.
This study uses the bibliometric method to analyze the comparative studies on different market mechanisms applied to carbon reduction between 1970 and 2016 based on the online databases of Science Citation Index Expanded (1970–2016) and Social Science Citation Index (2002–2016). We found by observing the characteristics of publications that such studies belong to a multidisciplinary field that has been continuously developing since the 1990s. The USA and the UK have maintained their leading research strengths in the field, whereas China entered late but has developed rapidly. The most productive journal, institution, and author in this field are Energy Policy, Resources for the Future, and Pizer from the USA, respectively. The auctorial and institutional cooperation degrees are growing and still have a broad collaboration space, but the cooperation among countries is fluctuating at a lower level. Nonetheless, the USA keeps its significant international cooperation ties. The bibliographic coupling and co-citation analysis reveals that articles in this field are closely related to one another. The basic literature in the field was written by Weitzman and published in 1974, and the article by Nordhaus published in Science in 1992 is the most cited in the field. The analysis of keywords and abstract shows that the hot spots include policy choice, price-versus-quantity analysis, and mechanism design.  相似文献   

4.
徐曼  张爱军 《冰川冻土》2007,29(4):659-663
以SCI-E收录数据库论文为样本的科学计量指标统计分析和灰色预测显示,在1995—2005年的11 a中,中国干旱区研究各项科学计量指标上升趋势十分显著,未来仍将继续保持大幅度的增长.中国干旱区研究的核心学科群呈现学科构成相对稳固,产出力变化较大的特征.由论文的引证指标揭示的学术影响力水平与国际同行相比略有差距,但远高于我国其它学科领域.  相似文献   

5.
近5年国际地球科学领域发展态势文献计量分析   总被引:2,自引:0,他引:2  
史静  朱薇薇  王鑫  肖仙桃  刘振锋  王欢  柴新夏 《地质学报》2017,91(12):2881-2888
本文基于Web of Science平台,以SCI-E数据库2012~2016年地球科学领域各年度居前10%的高被引论文为统计分析源,从国际地球科学研究论文的总体概况、研究的主要国家和机构、研究热点等方面对近年来地球科学发展态势进行文献计量分析,旨在为相关管理部门了解地球科学研究发展态势提供参考。  相似文献   

6.
基于Web of Knowledge平台SCI-E数据库,对2009—2014年中国科学院SCI论文及资源环境与地球科学领域论文产出进行统计,并与全球及中国论文产出相比较,了解中国科学院在资源环境科学领域的研究产出及其发展状况。分析结果显示,近年来中国科学院在资源环境科学领域尤其是古生物学方向取得了比较突出的成绩。中国科学院的地理科学与资源研究所、遥感与数字地球研究所、城市环境研究所等论文产出快速增长,生态环境研究中心、地质与地球物理研究所、广州地球化学研究所等科学贡献表现突出。  相似文献   

7.
Matja? Miko? 《Landslides》2011,8(4):541-551
The international journal Landslides (ISSN 1612-510X), launched in 2004 and published by Springer Verlag, soon gained international recognition as the only specialized scientific journal in the world dedicated to different aspects of landslides, and as one of the leading world journals in the field of geological engineering. After 7 years, seven published volumes with 28 issues and 290 published papers on 2,794 pages, there is time to make a comparison with other related journals that also cover the field of landslide risk mitigation. The critical review of these seven publishing years was done using ISI Journal Citation Reports produced by Thomson Reuters, and available scientometric data from the ISI Web of Knowledge and SCOPUS. The data presented in this paper and the analysis shown may help the Editorial Board to further improve the journal into the direction of a high quality scientific journal with even higher impact on the international research community in the field of landslide risk mitigation.  相似文献   

8.
The characteristics of wetland research were investigated by a bibliometric analysis of the top-cited wetland-related articles since 1899 based on the Science Citation Index Expanded database. The analyzed aspects included the distribution of journals, and publications by country, institution, and author, with five indicators including total articles, and independent, collaborative, first-author, and corresponding-author articles. Results showed that 188 articles on wetlands have been cited at least 100 times since their publication year to 2011. The most productive stage was 1991–2000, accounting for approximately seven-tenths of the top-cited articles. The US was the leading country, followed distantly by 25 other countries/territories. The US also held primacy in terms of productive institutions. The US Geological Survey ranked first according to the five indicators. The 188 top-cited articles had 637 authors, among whom W.J. Mitsch published the most first-author and corresponding-author articles. Furthermore, substance circulation (especially of carbon), wetland organisms and vegetation, and modeling methodology were the main focuses of wetland research in the past few years. In 2011, wetland organisms and vegetation were the hottest research topics. These results were coincident with a previous study on total publications, and revealed more-specific characteristics and hotspots of wetland research.  相似文献   

9.
In the present study, the analysis of the international landslide literature is aimed. The landslide is perhaps one of the most complex natural phenomena. Also, due to landslides, a considerable amount of loss of lives and economic losses is encountered throughout the world. Although a vast amount of landslide papers is published in international journals, a statistical assessment on this literature is not encountered. For this reason, this study is performed. For the assessment of the international landslide literature, the Science Citation Index Expanded (WOS; Web of Science) published by Institute of Scientific Information (now Thomson Scientific), USA for the period 1945–2008, is considered. A total of 3,468 publications are found and this data is stored into Oracle XE database and queried by using Structured Query Language and Procedural Language/Structured Query Language. In the following stages, some statistical analyses are performed and the possible trends are discussed.  相似文献   

10.
This paper presents an account of the progress of the integration between the Danish and Swedish parts of the Öresund Region within the world of science, with emphasis on biotech. The paper is based on data from the database Science Citation Index Expanded. The amount of co-authorships produced by agents from each side of the region is analysed for a 12-year period (1994–2005) and used as an indicator to show how the integration is proceeding. Each of the co-authorships is examined to shed light on the nature of the interactions, thereby identifying the agents most involved in collaboration. Furthermore, the development in co-authorships within the region is compared to the development in co-authorships between the Öresund Region and four selected reference areas. Our findings indicate that there has been a substantial increase in both the number of co-authorships overall and within biotech solely. The rise in co-authorships between the two parts is proceeding at a faster pace than the rise in co-authorships between the Öresund Region and the reference areas. The overall results of this paper indicate a growing integration of the biotech sector in the Öresund Region.  相似文献   

11.
Social Ecological System (SES) is the core and highlight of the global change research and sustainability science. Based on Science Citation Index Expanded Database and China National Knowledge Infrastructure, the situation of social ecological system research was analyzed via bibliometrics from 1980 to 2017. The results indicated that: ①The scientific outcomes of social ecological system research are increasing gradually. The developed countries have greatly contributed to it, such as, Sweden and the USA, the leading countries in this field, and Stockholm University is the dominant institution on publication of SES. Cooperation between countries (regions) and institutions is strengthening gradually. ② China is one of the frontier countries in the social ecological system research with a lower increasing speed, its international cooperation and the citation frequency of publications are relatively low, and its international influence should be strengthened in the future. ③ The research highlights are listed as follows: The synergy between social ecological system integrity and social development needs, the complexity and uncertainty of SES, the mechanism between social system and its environmental factors, etc. In addition, under the stress of human activity and global climate change, the research of response and feedback mechanism of SES and policy decision-making are one of the important topics of SES.  相似文献   

12.
卡林型金矿金砷成分分析标准物质研制   总被引:3,自引:3,他引:0  
卡林型金矿因其含砷影响金的分析和选冶回收率而备受关注,需要研制相应的标准物质支撑应用研究。本文依托近年来探明的超大型卡林型金矿——阳山金矿采集候选物,按照国家一级标准物质技术规范研制了4种卡林型金矿标准物质GBW07854~GBW07857。共有20家实验室联合定值,金主要分析方法为原子吸收光谱法和火试金法,湿法分析采用梯度焙烧-活性炭吸附金而分离砷等干扰组分;砷分析主要采用电感耦合等离子体发射光谱法和分光光度法。引用金量分析相对偏差允许限界定组内离群值,弥补了Dixon法和Grubbs法剔除离群值不够完全的缺陷。均匀性检验指标FF0.05(29,30)=1.84,表明组内和组间均无明显差异;在22个月内进行了5次检验,稳定性良好。4种标准物质金和砷的定值结果准确度均优于同量级的国家一级金矿石标准物质和国外含砷多金属矿石标准物质。该系列标准物质可用作卡林型金矿金和砷分析与研究等工作的量值标准。  相似文献   

13.
赵波  张志强  郑军卫 《地球科学进展》2005,20(12):1371-1375
对科研成果产出的定量科学评价,可以了解科研队伍的现状和科研的影响力。利用文献计量学方法,采集了2000—2004年SCI数据库中中国学者发表的地球科学论文,统计分析中国地球科学SCI论文的产出和被引用情况,以了解中国当前具有国际学术交流能力和SCI论文发表能力的地球科学研究队伍的现状和科研成果的国际影响力。分析结果表明,2000—2004年中国的国际地学研究论文数量以年均21.87%的速度递增,5年的论文篇均被引频次为2.57。地球科学二级学科领域SCI论文产出数量从高到低依次为:地质科学、地理科学、空间物理学、环境科学、地球物理学、大气科学、海洋科学、地球化学。在中国地学研究队伍中,中国科学院系统和教育部系统发表的论文数量最多,论文数量合计占中国国际地学论文总数的83.58%。中国当前具有国际学术交流能力和SCI论文发表能力的地球科学研究队伍人数在8 000人左右。  相似文献   

14.
何杰  王华  EduardoGarzanti 《地球科学》2020,45(6):2186-2198
定量的砂岩(砂)岩相学分析是重要的岩石学分析手段,有助于探讨沉积物的源区、背景和沉积盆地性质.在过去几十年中,科学家们对于砂岩(砂)的定量碎屑颗粒统计及其潜在地质意义(如沉积碎屑物与源区母岩的关系、沉积过程对碎屑组分的影响、碎屑组分与大地构造背景的关系等)取得了很多进展,但是对于定量的岩相分析方法和命名方案一直缺少系统的总结,导致一些实际工作中的波折和误区.在总结前人文献的基础上,系统描述了砂岩(砂)定量岩相分析的方法,并推荐最优的分类命名方案,希望建立统一的工作规范,本文提升砂岩(砂)碎屑颗粒统计结果的可靠性和数据的可对比性.同时,我们对砂岩构造背景判别图解的适用性进行了探讨,认为图解是展示砂岩碎屑组分统计结果的有效工具,但用于构造背景判断时则需谨慎,最好基于岩石本身的特征并结合其他资料综合探讨.   相似文献   

15.
宝玉石产地来源的研究是近几年地质学、宝石学和考古学界的热门话题之一。一方面,不同产地来源的宝玉石可能具有不同的品质特征及经济价值,其研究有助于珠宝首饰价值的判断,为各国海关执法提供技术支持;另一方面,古代宝玉石产地的确定对了解古代宝玉石的开采与古代科技的发展水平及不同区域的文化交流均具有重要意义。在总结前人研究成果的基础上,结合现代微区测试技术的最新研究成果,从微量元素、包裹体以及同位素分析等方面探讨总结了微区测试技术在确定宝玉石产地来源研究中的应用。当前的研究结果显示,不同的技术方法对确定宝玉石的产地来源均有一定的意义,但宝玉石产地来源的最终确定往往需要依赖更大范围和更深入地对宝石矿床的地球化学进行多技术手段的交叉分析。显然,确定各种不同类型宝玉石产地来源的标型特征及建立相关重要宝石产地的地球化学数据库,是最终解决宝玉石产地来源鉴定问题的关键。  相似文献   

16.
论述了基于网格与GIS的油气资源空间分布与定量评价系统的建立方法.该系统能够根据离散的钻井数据和等值线数据进行插值分析,以网格单元为基础进行油气资源的计算与评价;可以用GIS来管理空间数据和属性数据,生成并制作特定地层的油气资源量空间分布专题图和油气藏形态模拟图.以四川盆地川东北地区二叠系气源岩的油气资源评价为例,模拟了其生烃史,计算了其累积生气强度、累计生气量和天然气资源量.  相似文献   

17.
油气成藏过程的动力学研究是以一期油气成藏过程中从油气源到油气藏的统一动力环境系统为单元,定量研究油气供源、运移、聚集的机理、控制因素和动力学过程。以此为基础有望解决油气成藏定量的动力学研究中的几个关键问题。输导层概念的提出及砂岩输导层模型基本工作程序的建立,形成了可以利用通常的物性参数进行输导层量化表征的方法,实现了对油气运移通道的量化表征; 采用断层连通概率的概念对各种参数表征断层开启性的能力进行比较和评价,探讨了各种地质参数的有效性和代表性,建立起了断层启闭性表征参数的评价方法; 采用数值模拟方法,耦合运聚动力与输导体系,实现成藏系统内油气运移过程的模拟分析; 以运移途中烃损失量估算为基础,建立新的物质平衡方法,以模拟获得的运移路径为线索,评估油气在研究不同方向上的运移聚集量,展现油气运移的路径特征、运移方向及运移量,初步形成了以油气成藏动力学成因为基础的油气资源预测方法。  相似文献   

18.
俄罗斯不仅是世界上石油、天然气储量和开采量大国,而且是长输油气管道技术水平较高的国家.以近年来俄罗斯长输油气管道事故统计资料作为切入点,分析了俄罗斯长输油气管道事故的类型及发生的原因,并提出了对中国现役管道管理的建议和将建管道应注意的事项.  相似文献   

19.
Although polyculture or interplanting is a dominant production method used by traditional cultivators in the tropics, there has been increasing emphasis on monoculture in agricultural development planning. Analysis of the economic and ecological consequences of these two cropping alternatives in a densely-populated area of eastern Nigeria suggests that a focus on monoculture as a panacea for increasing productivity and food supply is questionable. Polyculture is held to be ecologically superior to monoculture and, in the field area examined, economically more productive as well. Thus further investigation of polycultural approaches to agricultural development would appear to be warranted.  相似文献   

20.
利用ERDAS和MAPGIS进行点线类遥感信息的提取和符号化表示   总被引:1,自引:0,他引:1  
为在遥感解译过程中更好地将点线类遥感信息进行符号化表达、并准确地获取其各类属性值,本文结合遥感图像处理软件ERDAS与国产GIS软件MAPGIS的特点,分析了二者联合进行点线类遥感信息提取的可行性;制定一套利用二者进行点线类遥感信息提取的可行方案;并将其应用到地质灾害体的解译中;效果良好。充分利用二者的优点可进行点线类遥感信息的提取与符号化表示,可操作性较强。  相似文献   

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