共查询到20条相似文献，搜索用时 173 毫秒
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复合合作强度指数构建及应用研究 总被引：1，自引：0，他引：1
[目的/意义] 构建一个基于科学家合作行为来评价科学家科研表现的复合合作强度(CCS)指数,该指数的特点在于不仅反映作者合作网络的特征,而且揭示科学家的合作机构及分布特征。[方法/过程] 基于科学家的合作与科研表现的正相关性,提出六大假设构建CCS指数理论模型。选取来自中国科学院2007-2011年间发表SCI论文在30篇以上的40位工业生物技术领域科学家为实证分析对象,并对实证结果与合作网络度数、H指数和篇均被引频次进行比较。[结果/结论] CCS指数与合作网络度数具有较高的相关性,而与H指数和篇均被引频次的相关性很弱,CCS指数的价值在于揭示科学家的合作者及合作机构的分布广度、深度和密度,反映科学家的国际合作参与度。这些指标之间存在互补关系,可进一步丰富科学家评价的指标,有助于开展科学家的科研表现评价和专家发现工作。 相似文献
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睡美人与王子文献的识别方法研究 总被引：1，自引：0，他引：1
[目的/意义] 研究睡美人与王子文献的识别方法。分析唤醒机制,为未来在学术交流体系中发现"王子"作者,发掘、唤醒低被引和零被引文献的潜在价值提供理论依据。[方法/过程] 采用被引速率指标和睡美人指数两种客观指标识别1970-2005年临床医学四大名刊上发表的睡美人文献;基于以下4个原则寻找唤醒睡美人的王子文献:①发表于被引突增的附近年份;②本身被引次数较高;③与睡美人文献的同被引次数高;④在年度被引次数曲线上,王子文献对睡美人文献的"牵引或拉动"作用非常显著,即至少在睡美人文献引用突增的附近年份,王子文献的年度被引次数应高于睡美人文献。[结果/结论] 由于考虑了全部引文窗的引文曲线,被引速率指标能够识别出那些被引生命周期长、至今仍持续不断高频被引的论文;睡美人指数能够快速识别出睡美人文献,但却无法反映年度被引次数达到峰值之后的引文曲线;将被引速率+发表最初5年年均被引次数两个指标结合起来能够更好地识别睡美人文献。分析发现,综述、指南、著作等"共识型"的文献对于引发那些提出了新思想但尚未被认可的睡美人文献的被引突增起到了关键作用。建议事后识别睡美人文献可采用客观指标与主观界定相结合的方法,事前预测睡美人文献要注意追踪其是否被"共识性"文献推荐和引用,学术评价要特别关注被引速率低的论文。 相似文献
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SCI评价体系对于我国科技期刊产生了全方位的冲击,院士是我国一流科学家的代表。分析林业工程学科的4位中国工程院院士的论文特点后发现:院士所有第一作者论文中仅4.3%发表在外文科技期刊上,真正是把论文写在祖国大地上;院士在50~59岁以及1990—2009年的发文总量最大;当选院士前主要以试验研究类论文为主,当选院士后则主要撰写综述类论文;院士发文对所在单位主办的期刊均有一定的倾向性;院士论文的篇均被引次数均超过10次,且单篇最高被引次数基本都超过100次。 相似文献
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以SJR为数据来源,比较分析了1996-2008年巴西、印度、中国、韩国4个国家发表科技论文数量、可引用文献量、文献被引量、自引量、篇均被引量、去除自引后的篇均被引量、H指数、文献引用率、国际合作量等9个指标。中国发表论文数最多,2003年后每年增加约3万篇。巴西、韩国文献引用率、篇均引用量高,且自引率低;印度居中等水平;中国文献引用率、篇均引用率低且自引率高;国际合作度巴西最高、中国最低。可见中国的科技论文质量与其他3个国家相比,还有一定的差距。 相似文献
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《情报学进展》年度评论5卷载文的定量分析 总被引：4，自引：0，他引：4
对《情报学进展》第1-5卷发表的论文从论文作者、发文机构、主题等方面进行定量分析,同时对该年前四卷发表论文的被引频次、来源期刊、高被引论文等进行文献计量学分析,对第五卷发表的论文和《情报学进展》进行了简单的评价。参考文献5。 相似文献
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单篇论文学术影响力评价指标构建 总被引：1，自引：1，他引：0
[目的/意义] 基于评价指标设计原理,建立可扩展到多篇论文评价的单篇论文学术影响力评价指标体系,为多角度评价单篇论文学术影响力提供多种指标。[方法/过程] 兼顾施引文献的数量与质量,建立包含TVF、TVF（n）以及VF（t）等单篇论文影响力评价指标的指标体系,提出将TVF指标扩展到多篇论文影响力的分析方法。通过实证研究,计算TVF、TVF（3）与被引次数C及施引文献的h指数的皮尔森相关性,并与他人的评价结论对照印证。[结果/结论] 对TVF及TVF（n）等指标不同的用途进行了探讨：TVF是累计综合影响力,用于全面评价论文的影响力;TVF（n）可用于比较不同年份论文间的影响力,且可预测它们未来的TVF表现。TVF还可被扩展应用到多篇论文学术影响力的评价中。 相似文献
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基于AHP的师范高校图书馆科研能力多指标综合评价研究 总被引：1，自引：0，他引：1
以师范高校图书馆作为研究对象,以"中国引文数据库"作为引文分析工具,应用h指数、论文总数、总被引次数、篇均被引次数、论文被引率等计量指标,并结合层次分析法,在测定单项指标的基础上计算综合指数,反映师范高校图书馆的综合评价结果和整体影响力,并对综合指数及影响原因进行分析。 相似文献
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In recent years there has been a sharp increase in collaborations among scholars and there are studies on the effects of scientific collaboration on scholars’ performance. This study examines the hypothesis that geographically diverse scientific collaboration is associated with research impact. Here, the approach is differentiated from other studies by: (a) focusing on publications rather than researchers or institutes; (b) considering the geographical diversity of authors of each publication; (c) considering the average number of citations a publication receives per year (time-based normalization of citations) as a surrogate for its impact; and (d) not focusing on a specific country (developed or developing) or region. Analysis of the collected bibliometric data shows that a publication impact is significantly and positively associated with all related geographical collaboration indicators. But publication impact has a stronger association with the numbers of external collaborations at department and institution levels (inter-departmental and inter-institutional collaborations) compared to internal collaborations. Conversely, national collaboration correlates better with impact than international collaboration. 相似文献
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《Journal of Informetrics》2022,16(3):101314
Research studies have found that coauthorship with top scientists positively correlates with researchers’ career advancement. However, the influence of different proximities and types of coauthorship with top scientists on their performance has rarely been discussed. We identified the winners of four awards as top authors. We also evaluated the effect on the researchers’ affiliation change, research topic, productivity, and impact before and after three top-ordinary scientist coauthorship types (strong, moderate, and weak), examining the effect after top-top and ordinary-ordinary scientist coauthorships. Additionally, a coauthorship closeness indicator was proposed, considering the team size and author role to measure the collaboration relationship between coauthors. The results reveal that the top scientist in strong coauthorship obtained the highest affiliation change rate. For the top-ordinary coauthorship, the affiliation change rate for top scientists is higher than for ordinary scientists. For other aspects (the coauthor number, research topic, productivity, and impact), the rate after strong and moderate coauthorships increases compared to weak top-ordinary coauthorship type for top and ordinary scientists. Therefore, top scientists obtain a partner with skills, and ordinary scientists obtain more guidance. Strong and moderate coauthorships are win-win relationships for top-ordinary coauthorship types. 相似文献
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《Journal of Informetrics》2023,17(1):101375
With the continued aging of the scientific workforce, the impact of this trend on scientists’ research performance has attracted increasing attention. The literature has predominantly focused on the productivity, impact, and collaboration pattern of scientists of different ages. A research gap is found in investigating the differences in the research topics studied by junior and senior scientists. This study focuses on the complexity of a scientist's research portfolio (RPC). Based on the concept of economic complexity, RPC was measured to characterize the capability of scientists to study complex research topics. An economic algorithm was adopted to estimate RPC on heterogeneous author-topic bipartite networks using bibliographic data from the field of Library and Information Science between 1971 and 2020. Through comparisons among scientist groups, RPC shows promise in distinguishing outstanding scientists from peers who have similar values of other indicators (e.g., citations and H-index). The change in RPC was further probed across scientists’ careers and an increasing trend with academic age was found, even after removing the accumulated advantages of senior scientists. Moreover, top-ranked scientists distinguish themselves from their peers by a higher RPC in the first year and a greater growth rate during their careers. While many researchers have their highest RPC in the first year, most top-ranked scientists reach their peak RPC later in their careers. The results provide helpful references for studies on the aging effect in academia. 相似文献
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Major holdings libraries within the UK higher education (HE) sector have until very recently received no compensation for the ‘burden’ imposed by visiting research‐active staff and students from other UK higher education institutions. The joint UK higher education funding bodies' Research Support Libraries Programme (RSLP) Access strand seeks to compensate the libraries for extra costs incurred in providing access and services for these ‘external researchers’. As there was no comprehensive and auditable data already available, RSLP commissioned the first large‐scale survey of the use made of UK higher education libraries by external researchers. Almost 5,000 research‐active staff and students were surveyed. The work was carried out between March and August 1999 and measured the number (and length, where appropriate) of in‐person, e‐mail, letter, fax and telephone contacts that researchers had with libraries other than those of their own institution. It also asked respondents to list the top five UK HE libraries in terms of importance for research in their discipline(s). The survey confirmed that there is very extensive use of libraries beyond those of the ‘home’ institution and provided the data on which the RSLP Access strand annual allocations for the academic years 1999–2000 to 2001–2002 were made. 相似文献
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[目的/意义]运用深度学习技术,提出结合时间和空间特征的测度(速度、覆盖度和迂回度)方法,用于量化学者研究主题演化,从而为基于内容的学者评价提供量化依据。[方法/过程]提出三维指标框架,其中速度反映作者改变研究主题快慢的平均程度,覆盖度反映作者研究内容所覆盖的主题广度,迂回度反映作者研究路径的曲折性。使用微软学术数据集中计算机科学的作者进行实证研究,并考察学者研究主题演化的三维测度和学者学术影响力和生产力的关系。[结果/结论] 实证研究结果显示,覆盖度与总被引量和总发文量的关系为单调递减,这一特征说明聚焦于特定研究主题较为深入的作者,其发文量和影响力都较大。作者研究主题演化的"速度"和"迂回度"与总被引量、总发文量都存在先增加后减少的倒U型关系。所提出的多维度指标框架不仅可在理论上丰富科学计量学对于学者研究主题转移演化及其机制的理解,而且结合深度学习模型提出了问题的解决思路。 相似文献
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《Journal of Informetrics》2022,16(2):101280
International mobility in academia can enhance the human and social capital of researchers and consequently their scientific outcome. However, there is still a very limited understanding of the different mobility patterns among scholars with various socio-demographic characteristics. By studying these differences, we can detect inequalities in access to scholarly networks across borders, which can cause disparities in scientific advancement. The aim of this study is twofold. First, we investigate to what extent individuals’ factors (e.g., country, career stage, and field of research) associate with the mobility of male and female researchers. Second, we explore the relationship between mobility and scientific activity and impact. For this purpose, we used a bibliometric approach to track the mobility of authors. To compare the researchers’ scientific outcomes, we considered the number of publications and received citations as indicators, as well as the number of unique co-authors in all their publications. We also analyzed the co-authorship network of researchers and compared centrality measures of “mobile” and “non-mobile” researchers. Results show that researchers from North America and Sub-Saharan Africa, particularly female ones, have the lowest, respectively, highest tendency towards international mobility. Having international co-authors increases the probability of international movement. Our findings uncover gender inequality in international mobility across scientific fields and countries. Across genders, researchers in the Physical sciences have the most and in the Social sciences the least rate of mobility. We observed more mobility for Social scientists at the advanced career stage, while researchers in other fields prefer to move at earlier career stages. Also, we found a positive correlation between mobility and scientific outcomes, but no apparent difference between females and males. Indeed, researchers who have started mobility at the advanced career stages had a better scientific outcome. Comparing the centrality of mobile and non-mobile researchers in the co-authorship networks reveals a higher social capital advantage for mobile researchers. 相似文献
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Accurate measurement of research productivity should take account of both the number of co-authors of every scientific work and of the different contributions of the individuals. For researchers in the life sciences, common practice is to indicate such contributions through position in the authors list. In this work, we measure the distortion introduced to bibliometric ranking lists for scientific productivity when the number of co-authors or their position in the list is ignored. The field of observation consists of all Italian university professors working in the life sciences, with scientific production examined over the period 2004–2008. The outcomes of the study lead to a recommendation against using indicators or evaluation methods that ignore the different authors’ contributions to the research results. 相似文献
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Serhat Kurt 《Learned Publishing》2018,31(2):141-147
This study examines the reasons why authors publish in ‘predatory’ OA journals. In total, 50 journals were randomly selected from Beall's list of ‘predatory’ journals. Different methods, including WHOIS tracking, were utilized to query basic information about the selected journals, including location and registrant. Then, 300 articles were randomly selected from within selected journals in various scientific fields. Authors of the selected articles were contacted and sent survey questions to complete. A grounded theory qualitative methods approach was used for data collection and analysis. The results demonstrated that most of these journals were located in the developing world, usually Asia or Africa, even when they claimed they were in the USA or UK. Furthermore, four themes emerged after authors’ survey responses were coded, categorized, and sub‐categorized. The themes were: social identity threat, unawareness, high pressure, and lack of research proficiency. Scholars in the developing world felt that reputable Western journals might be prejudiced against them and sometimes felt more comfortable publishing in journals from the developing world. Other scholars were unaware of the reputation of the journals in which they published and would not have selected them had they known. However, some scholars said they would still have published in the same journals if their institution recognised them. The pressure to ‘publish or perish’ was another factor influencing many scholars’ decisions to publish in these fast‐turnaround journals. In some cases, researchers did not have adequate guidance and felt they lacked the knowledge of research to submit to a more reputable journal. More needs to be done by institutions and reputable journals to make researchers aware of the problem of ‘predatory’ journals. 相似文献
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National culture is among those societal factors which could influence research and innovation activities. In this study, we investigated the associations of two national culture models with citation impact of nations (measured by the proportion of papers belonging to the 10 % and 1 % most cited papers in the corresponding fields, PPtop10% and PPtop 1%). Bivariate statistical analyses showed that of six Hofstede’s national culture dimensions (HNCD), uncertainty avoidance and power distance had a statistically significant negative association, while individualism and indulgence had a statistically significant positive association with both citation impact indicators (PPtop10% and PPtop1%). The study also revealed that of two Inglehart-Welzel cultural values (IWCV), the value survival versus self-expression is statistically significantly related to both citation impact indicators (PPtop10% and PPtop 1%). We additionally calculated multiple regression analyses controlling for the possible effects of confounding factors including national self-citations, international co-authorships, investments in research and development, international migrant stock, number of researchers of each nation, language, and productivity. The results revealed that the statistically significant associations of HNCD with citation impact indicators disappeared. But the statistically significant relationship between survivals versus self-expression values and both citation impact indicators remained stable even after controlling for the confounding variables. Thus, the freedom of expression and trust in society might contribute to better scholarly communication systems, higher level of international collaborations, and further quality research. 相似文献
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与科研合作相关的研究内容呈现多样性的特征,但针对某一高校内部科研合作规律的分析鲜有问津。本文以华东理工大学机构知识库的数据为数据源,通过SQL编程代码运行以统计分析该高校的合作情况、合作范围、合作规模等内容,分别基于发文量、被引频次、h指数3个评价指标分析高校作者的合作差异情况。研究表明,华东理工大学的作者合作程度较高,其中两人合作最普遍,并且科研人员倾向于小规模的科研合作;合作规模为3人至5人时,论文的质量较高;高水平作者间的科研合作以高h指数作者间合作最为紧密。 相似文献