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1.
利用高被引与零被引数据剖析中国博士学位论文学术影响力 总被引：1，自引：0，他引：1
对2012年及以前的45万篇中国博士学位论文至2013年底被期刊或其他学位论文引用的情况进行计量分析,根据不同学科特点确定各自高被引次数阈值,得出高被引及零被引论文平均占比为0.36%和62.18%。选取产出论文总数靠前的82家博士授予单位,以其博士论文高被引与零被引百分比做象限分布图,更为全面地反映出各机构博士培养的整体实力。论文还横向对比了各学科优秀博士获奖、提名与其他论文被引的情况,发现优博论文中也不乏较多的零被引论文;最后对博士学位论文的睡美人现象进行了报告。 相似文献
2.
基金论文比作为科技期刊评价指标的合理性 ——基于SCI数据库中眼科学期刊的实证研究 总被引：3，自引：1，他引：2
近年国内关于基金论文比作为科技期刊评价指标一直存在极大争议。为了客观评价基金论文比在科技期刊评价中的作用,选取2009年SCI数据库收录眼科学期刊和论文为研究对象,对基金论文与非基金论文的被引率和篇均被引频次、期刊基金论文比与影响因子、5年影响因子、特征因子和零被引论文率的关系做了统计分析。向全球8525个眼科医生发放E-mail问卷调查表,对每个SCI眼科学期刊打分、排序,并与期刊基金论文比排序进行相关分析。按照被引频次高低,将所有论文分为4组,被引频次≥10的论文为Ⅰ组,5～9者为Ⅱ组,1～4者为Ⅲ组,零被引论文为Ⅳ组,计算4组论文的基金论文比,并进行统χ2检验。结果显示,2009年45种眼科期刊共发表论文7319篇,被引用6280篇,零引用1039篇,被引频次47333,论文被引率为85.80%,篇均被引6.467次。各种基金资助论文3110篇(42.49%),被引用2899篇,被引频次25404,论文被引率93.21%,篇均被引8.168次;无基金资助论文4209篇,占总论文的57.50%,论文被引率为80.33%,篇均被引5.21次。经Spearman相关检验,基金论文比与影响因子、5年影响因子、特征因子的相关系数分别为0.619、0.523和0.624,与问卷调查的相关系数为0.462。Ⅰ、Ⅱ、Ⅲ、Ⅳ组基金论文比分别为57.15%、51.51%、37.29%和20.31%,Ⅰ与Ⅱ、Ⅱ与Ⅲ、Ⅲ与Ⅳ组相比,χ2值分别为10.542、90.409和100.630(均为P<0.001)。因此认为,无论是论文被引率还是篇均被引频次,基金论文均明显高于非基金论文;期刊基金论文比与影响因子、5年影响因子、特征因子及读者调查得分均呈显著正相关;高被引频次组的论文其基金论文比明显高于低被引频次组论文。显然,基金论文比作为科技期刊评价指标是科学合理的。 相似文献
3.
姜春林 《中国科技期刊研究》2006,17(3):399-403
利用中文社会科学引文索引从1998年至2004年共7个统计年的数据，从历时法引文分析的角度对《中国科技期刊研究》的被引文献数量、被引次数-篇数分布、被引半衰期、影响因子、引用期刊、被引次数最多的单篇论文、被引论文数量最多的作者、被引次数最多的作者等进行计量分析。初步勾勒出该刊的文献指标特征，认为该刊专业性强，文献被利用速度快，学术影响力较大。 相似文献
4.
《中国科技期刊研究》高被引论文特征分析 总被引：5，自引：1，他引：4
利用万方全文数据库的"引文查询"功能,对《中国科技期刊研究》1998～2009年的全部论文进行了被引统计。结果显示:该刊共发表论文3637篇,被引率为62.4%;20.4%的论文产生了71.8%的被引频次;前40篇高被引论文选题主要集中在期刊评价和期刊管理研究方面,其中发表3篇以上的高被引作者有任胜利、金碧辉和刘振兴等;引证文献除自身外,相关度较高的是《编辑学报》和《现代情报》;前40篇高被引论文几乎每年都在被引用,平均被引高峰期出现在论文发表后的2～5年间,其主题主要集中在"科技期刊"的"期刊评价"和"期刊发展"方面。 相似文献
5.
王新 《中国科技期刊研究》2017,28(7):647-657
【目的】 分析基础学科期刊论文被引的分布特点,探究低被引论文区间的界定和评价方法。【方法】 以科学引文索引(WoS)收录的65种凝聚态物理学期刊(CMJ)的被引数据为研究对象,以统计学原理和文献计量学方法,比较分析h指数核心区、被引频次小于篇均被引次数论文,以及最低被引论文的累计被引频次为期刊总被引频次的5%,10%和20%区域内论文的被引特性,以此确定CMJ最合理的低被引区。【结果】 CMJ整体零被引率仅为10%,可视为高质量的期刊集合。最低被引论文的累计被引达到总被引频次20%的区域和被引小于篇均被引次数的区域具有被界定为低被引区的统计学依据。零被引率、低被引率和低被引密度与传统评价指标IF、h指数、篇均被引次数以及可被引论文数、总被引频次不存在强相关性,满足作为独立评价指标的充分条件。【结论】 由零被引率、低被引率和低被引密度构成复合指标Evel {rN0,rN x,rTci x}用于描述期刊的低被引特性;由h指数和特定区域内的篇均被引次数构成另一个复合指标Evel {h,Ci 20%,Ci cipp,Ci h}用于比较期刊的被引结构特征。研究表明期刊被引结构可以构形分类,而评价参数在不同被引区域有可能存在竞争优势;因此评价期刊的低被引情况要以分析被引结构为前提。期刊的综合评价应该使用多参数多维度指标。 相似文献
6.
2000～2004年SCI-E收录《生物化学与生物物理进展》论文分析 总被引：2，自引：0，他引：2
目的 了解《生物化学与生物物理进展》发文、文献引用规律及该刊情报吸收能力、期刊论文的覆盖范围、科研人员合作现状及特点、发现生物化学与生物物理研究领域科研人员的文献需求特征,为该学科研究人员查阅文献和编辑部提高期刊质量提供参考。方法 以《生物化学与生物物理进展》2000～2004年被SCI-E收录的941篇论文为研究对象,采用文献计量学分析方法分别对期刊载文量、篇均引文数、作者发文数量、合作情况、高产作者、地区分布、高产机构、引文数量、引文年代、普赖斯指数、自引率、期刊互引、高频次被引期刊和论文被引等指标进行统计分析。结果 高产著者100人发文224篇（23.80%）,高产机构20个发文447篇（47.50%）,篇均引文量为14.31条,主要的引文类型为期刊（95.72%）,普赖斯指数56.05%,自引率1.60%,被引用频次居前13位的期刊的文献引用量占总引用期刊文献量的35.26%,收录论文被引率24.65%,篇均被引次数为0.37。结论 期刊论文涉猎文献范围较广，作者分布在全国24个省市区以及欧亚四国，合作率高。该刊拥有一支实力雄厚、对刊物影响较大、造诣较深的活跃高产作者群,中国科学院生物物理研究所在国内生物化学与生物物理研究领域处于领先地位。论文引文类型以期刊为主,研究引用文献比较新颖,论文被引率和篇均被引次数有待进一步提高。 相似文献
7.
对 Scopus 数据库中的83种图书情报学期刊的零被引现象进行了实证研究。通过从期刊零被引论文分布、统计当年前三年的零被引论文数量与可引用论文数量等指标的相关系数两个方面进行分析发现：随着时间变化,期刊整体的零被引论文数量在不断下降,但是较为稳定的状态;大部分期刊的零被引论文数量与其发文量和可被引论文数量成正相关,少数期刊的相关性不强;零被引论文数量与篇均被引、自引论文数量、总被引次数等指标间整体上的相关性较低,甚至是负相关。 相似文献
8.
论《基本科学指标》观照下的我国高水平大学科研竞争力 总被引：3，自引：0，他引：3
利用美国<基本科学指标>(ESI)数据库的数据,分析1997年1月1日至2007年8月31日间,被ESI收录的51所中国高校的科研论文.研究显示:我国高校科研论文产出量已经具有比较好的整体实力;我国高校论文被引频次、篇均被引次数、高被引论文产出数、热门论文数等也取得了较大的进步,但与世界一流大学相比仍显得数量比较少,排名比较落后,科研影响力和科研创新力都急待提高. 相似文献
9.
22种医药卫生类高校学报的高被引论文的统计分析 总被引：5，自引：5，他引：0
利用<中国引文数据库>和<中国期刊全文数据库>对22种医药卫生类高校学报1990～2009年的高被引论文进行了文献计量学研究.结果表明,各刊的全部最高被引论文的被引用时间主要集中在论文发表后的2～9年间,其中涉及常见病、多发病、传染病和精神疾病的论文12篇,涉及中药药理和药物分析的论文5篇,涉及肿瘤方面的论文3篇,涉及新技术、新方法的论文2篇;各刊被引用最多的前30篇,共计660篇高被引论文主要出现在论文发表后的6～14年,其次是15～19年;从学科方面来说,临床医学的高被引论文最多,212篇,占32.1%;中药中医次之,194篇,占29.4%;基础医学论文158篇,占23.9%;肿瘤学论文57篇,占8.6%;预防医学论文37篇,占5.6%;特种医学2篇.从发表高被引论文的特点来说,中药学方面是<吉林大学学报.医学版>(23篇)和<安徽医科大学学报>(15篇);临床医学方面是<第二军医大学学报>(17篇)和<上海交通大学学报.医学版>(16篇);基础医学方面是<第三军医大学学报>(15篇). 相似文献
10.
中医中药学期刊高被引论文研究 总被引：7，自引：6，他引：1
屈清慧 《中国科技期刊研究》2009,20(3):454-460
利用《中国期刊全文数据库》和《中国引文数据库》对32种中医中药学期刊1990～2008年的高被引论文进行文献计量学研究。结果表明,选出32种期刊中各刊的1篇最高被引论文的被引用时间主要集中在论文发表后2～7年,其中涉及中药研究与应用的论文最多,计21篇,占65.62%; 有5篇综述文章,占15.62%。32种期刊各刊被引用最多的前30篇(共960篇)高被引论文的发表年份主要集中在1994～2003年; 涉及中药研究与应用的高被引论文最多,630篇,占65.62%,分别是中药药理、中药、中药临床应用和中药化学成分研究等方面的论文; 其中中药药理299篇,占31.15%; 中药141篇,占14.69%; 中医疗法应用96篇,占10.00%; 中药临床应用80篇,占8.33%; 病因病机研究75篇,占7.81%。综述类文章158篇,占16.46%。中医中药学期刊高被引论文研究的热点和焦点是:针对常见病、慢性病、疑难病或重大疾病,如心脑血管疾病、糖尿病、骨性关节炎、肿瘤的发病机理和中医药疗法及其作用机制的研究; 中药化学成分研究; 中药指纹图谱研究等。 相似文献
11.
《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
12.
Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
13.
《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
14.
A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
15.
Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
16.
Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
17.
Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献
18.
Milton Mueller 《The Information Society》2001,17(3):151-163
Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP. 相似文献
19.
Prof. Raymond C.K. Chen a neuropsychologist with the CAS Institute of Psychology has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology. 相似文献
20.
Prof. SUN Changpu from the CAS Institute of Theoretical Physics coworkers from University of Basel in Switzerland have worked out a way - at least in theory - to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams is similar to the famous Stern-Gerlach effect whereby a beam of atoms passing through a magnetic field is split in two according to the atoms' spin states 《中国科学院院刊(英文版)》2008,22(1):23-23
Prof. SUN Changpu from the CAS Institute of Theoretical Physics and coworkers from University of Basel in Switzerland have worked out a way --at least in theory --to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams and is similar to the famous Stern-Gerlach effect, whereby a beam of atoms passing through a magnetic field is split in two according to the atoms＇ spin states （Phys. Rev. Lett. 99 130403）. 相似文献