Who is publishing in Theriogenology and on what subjects?

An analysis of 503 articles published in the journal Theriogenology in 1984, 1987 and 1990 was conducted to identify research trends and researchers publishing in the journal. A 30.5% increase in the number of papers published was found for 1990. During the 3yr period studied, the United States and Canada accounted for 63.1% of the total number of articles published, followed by European countries with 14.3%, and by Asia with 12.0%. At least 1 paper was published from 41 countries. The United States, at the top of the list, increased its share from 16% in 1984 to 21% in 1990. The number of papers from Japan increased significantly while the percentage of participation from Europe declined. The female animal was the sole subject of 63.2% of the articles, and cattle were the most researched species, appearing in 44.3% of the studies. Although the estrous cycle was the most studied reproductive event in all 3 yr, there was also a trend for the popularity of this topic to decrease in favor of the subject fertilization. The number of authors per paper increased significantly over the years analyzed, as did the number of studies carried out in international cooperation. Institutes of higher education were represented in almost 70% of the papers, followed by research institutes (12.8%). The present analysis confirms the central role that the journal Theriogenology plays in the world-wide communication of research results in animal reproduction.     

The feature of papers and citation analysis of eleven journals in tropical medicine indexed by Science Citation Index Expanded

To determine the features of papers, authors, and citation of eleven journals in tropical medicine indexed by Science Citation Index Expanded, the database of the Institute for Scientific Information, we analyzed original articles, editorials, reviews, corrections, letters, biographies, and news published in these journals. The results show that these journals covered 107 countries or regions on six continents. The average number of reference was 23.05, with 87.89% of the references from periodicals. The Price Index was 31.43% and the self-citing rate was 7.02%. The references in the first 20 journals ranked by the amount of citation accounted for 36.71% of the total citations. Brazil, United States, India, and England are more advanced in tropical medicine research. The conclusion is that these journals covered most research done in these countries or regions. Most researches were done by cooperation of the researchers, but many of the publications used outdated articles and should include newer information.     

Open Access Meets Discoverability: Citations to Articles Posted to Academia.edu

Using matching and regression analyses, we measure the difference in citations between articles posted to Academia.edu and other articles from similar journals, controlling for field, impact factor, and other variables. Based on a sample size of 31,216 papers, we find that a paper in a median impact factor journal uploaded to Academia.edu receives 16% more citations after one year than a similar article not available online, 51% more citations after three years, and 69% after five years. We also found that articles also posted to Academia.edu had 58% more citations than articles only posted to other online venues, such as personal and departmental home pages, after five years.     

Reasons for Journal Impact Factor Changes: Influence of Changing Source Items

Both the concept and the application of the impact factor (IF) have been subject to widespread critique, including concerns over its potential manipulation. This study provides a systematic analysis of significant journal Impact Factor changes, based on the relative contribution of either one or both variables of the IF equation (i.e. citations / articles as the numerator / denominator of the quotient). A cohort of JCR-listed journals which faced the most dramatic absolute IF changes between 2013 and 2014 (ΔIF ≥ 3.0, n = 49) was analyzed for the causes resulting in IF changes that theses journals have experienced in the last five years. Along with the variation by number of articles and citations, this analysis includes the relative change of both variables compared to each other and offers a classification of `valid`and `invalid`scenarios of IF variation in terms of the intended goal of the IF to measure journal quality. The sample cohort features a considerable incidence of IF increases (18%) which are qualified as `invalid`according to this classification because the IF increase is merely based on a favorably changing number of articles (denominator). The results of this analysis point out the potentially delusive effect of IF increases gained through effective shrinkage of publication output. Therefore, careful consideration of the details of the IF equation and possible implementation of control mechanisms versus the volatile factor of number of articles may help to improve the expressiveness of this metric.     

International collaboration in freshwater ecology

1. International collaboration in freshwater ecology was examined using authorship affiliations of articles published in thirty-three specialized journals. Most are published in Europe. 2. Researchers from four to thirty-seven different countries were represented in the 100 articles examined for each journal. Only 29% of articles were single-authored; multicountry authors' addresses (indicating international collaboration) were found for 9% (range 0–23% per journal) of articles examined. 3. Five of the eighty-nine countries listed in the addresses of the 3300 articles together contributed >50% of total articles: United States (24.9%), Canada (8.6%), Germany (7.6%), Commonwealth of Independent States (7.0%) and Poland (5.9%). Of the fifteen countries that each produced >2.5% of total articles, the percentage representing international collaboration was highest for France (34.9%) and Canada (24.0%). The seventy-four countries that each contributed <2.5% of total articles generally had higher rates of international collaboration. 4. Researchers in the United States and Canada collaborate internationally almost twice as often in freshwater ecology than in all science. Much of France's extensive international collaboration is with countries that produce few articles in freshwater ecology, and their international collaboration is often exclusively with France. 5. Three journals publishing both marine and freshwater ecology articles contain more articles on the former topic, but more countries are represented in the publication of freshwater than marine research. 6. The percentage of articles that represent international collaboration is higher in freshwater ecology than in medicine, biology, chemistry and engineering, and approximates that in physics.     

Bibliometric analysis of global scientific research on carbapenem resistance (1986–2015)

Background

Antimicrobial resistance is a global public health challenge and carbapenem resistance, in particular, is considered an urgent global health threat. This study was carried out to give a bibliometric overview of literature on carbapenem resistance. In specific, number of publications, top productive countries and institutes, highly cited articles, citation analysis, co-authorships, international collaboration, top active authors, and journals publishing articles on carbapenem resistance were analyzed and discussed.

Methods

Specific keywords pertaining to carbapenem resistance were used in Scopus database. Quantitative and qualitative analysis of retrieved data were presented using appropriate bibliometric indicators and visualization maps.

Results

A total of 2617 journal articles were retrieved. The average number of citations per article was of 21.47. The growth of publications showed a dramatic increase from 2008 to 2015. Approximately 9 % of retrieved articles on carbapenem resistance were published in Antimicrobial Agents and Chemotherapy journal. Retrieved articles were published by 102 different countries. The United States of America (USA) contributed most with 437 (16.70 %) articles followed by China with 257 (9.82 %) articles. When productivity was stratified by population size, Greece ranked first followed by France. Greece also ranked first when data were stratified by gross domestic product (GDP). Asian countries have lesser international collaboration compared with other countries in the top ten list. Five of top ten productive institutes were Europeans (France, the UK, Greece, Italy, and Switzerland) and two were Asians (China and South Korea). Other active institutes included an Israeli and a Brazilian institute. Four of the top ten cited articles were published in Antimicrobial Agents and Chemotherapy journal and two were published in The Lancet Infectious Diseases.

Conclusion

There was a dramatic increase in number of publications on carbapenem resistance in the past few years. These publications were produced from different world regions including Asia, Europe, Middle East, and Latin America. International collaboration needs to be encouraged particularly for researchers in Asia. Molecular biology and epidemiology dominated the theme of the top ten cited articles on carbapenem resistance. This bibliometric study will hopefully help health policy makers in planning future research and allocating funds pertaining to carbapenem resistance.

     

全球北极底栖生物研究文献计量分析

以Thomson Reuters的Web of Science信息平台提供的SCI-E数据库为数据源,检索到从1991年至2012年期间全球北极底栖生物研究论文2127篇,利用Note Express软件,分析22年间论文发表的年度、国家、机构、作者、期刊和学科等方面的分布特征,结果表明:1)全球北极底栖生物研究论文数量、篇均作者数和篇均参考文献数都在逐年增加;2)研究论文涉及58个国家或地区,位于前7位的国家依次是美国、德国、加拿大、挪威、俄罗斯、英国和丹麦;美国、加拿大、挪威和丹麦是该领域国际合作研究最主要的国家;3)论文涉及1364个机构,前20名的研究机构中,美国有6家,德国、加拿大和挪威各有3家,俄罗斯和丹麦各有2家,波兰有1家。俄罗斯、丹麦、波兰、德国和挪威超过60%的研究力量集中在位列前20位的相关机构中。俄罗斯科学院论文总量排列首位,德国阿尔弗雷德魏格纳极地与海洋研究中心和基尔大学论文的h指数最高为32;4)论文涉及最多的4个学科是海洋与淡水生物学、生态学、海洋学和多学科地球科学。Polar Biology和Marine Ecology Progress Series是发表该领域最核心的期刊。还对中国在该领域的研究现状进行了简要的分析。从文献计量学角度揭示了全球北极底栖生物研究现状,为提升我国该领域研究的国际竞争力提供科学参考。     

不懈探索, 努力引领中国生物多样性科学发展——《生物多样性》创刊三十周年回顾

为更好地推动我国生物多样性科学的发展, 提升期刊服务能力, 并庆祝创刊30周年, 我们梳理了《生物多样性》2013-2022年的主要进展。(1)近10年中, 期刊的特色进一步凸显。围绕学科前沿、国家重大行动计划、履约等领域共策划出版56个专辑/专题, 新设立编者按、生物编目、数据论文、保护与治理对策、生物文化多样性等特色栏目, 通过发表数据论文、生物编目等文章推动数据共享, 以及通过鼓励学术争鸣、探索中文期刊的国际传播等举措使期刊的特色进一步凸显。(2)期刊载文量快速增加, 报道的内容不断拓展。研究方向由前20年的61个增加为目前的78个, 90%左右的文章聚焦于生物多样性保护、环境科学/生态学等领域; 植物学、动物学、微生物学的稿件分别占41.79%、47.48%和4.61%。基于关键词的文献计量分析表明, 近10年刊登的文章关键词聚类为遗传多样性、群落结构、红外相机、红色名录、生物多样性公约、国家公园、植物多样性、分类学和地理分布等9个子领域。培养了大批生物多样性人才, 10年中共有4,665位作者署名(作者记录数6,295), 发表文章最多的前20位作者主要来自中国科学院相关研究所、中国环境科学研究院、北京大学等机构, 其中60%为编委。(3)刊登的论文被广泛引用和下载。根据中国知网数据(排除了学位论文和会议论文, 2022年10月18日), 近10年刊登的文章有1,211篇累计被引用13,507次, 平均每篇被引11次以上; 网上下载量从2012年的6.64万次增加到2021年的23.85万次。有5篇文章入选中国科协优秀科技论文或中国百篇最具影响国内学术论文; 以国家公园、红外相机、红色名录、多功能性、生物入侵为关键词的文章是受关注的热点。《生物多样性》的影响因子和总被引频次在生物学领域一直排名前列; 是《科技期刊世界影响力指数(WJCI)报告》中全球保护生物学领域唯一的中国期刊, 2019年和2020年分别位列23/48和25/49位。最后我们探讨了今后如何继续引领中国生物多样性研究和保护、建设一流科技期刊面临的挑战和对策以及如何进一步提升科学传播能力。     

Growth and development of biofeedback: a bibliographic update

Computerized literature searching techniques were used to examine publication patterns in the worldwide biofeedback literature. Searches were completed in the United States and in Japan for the years 1985 through 1987. The results were used to update the results of an earlier study that covered the years from 1964 through 1984. Publication growth curves were generated for several media, including scientific journal articles, books, doctoral dissertations, and popular magazine articles. Although publication of information about biofeedback remains active worldwide, there has been a declining trend in effect for the past several years. The American database grossly underestimated the number of Japanese biofeedback articles, and it is likely that the literatures of other countries outside of North America were similarly underestimated. Possible explanations for the various trends noted are discussed.     

High-Ranked Social Science Journal Articles Can Be Identified from Early Citation Information

Do citations accumulate too slowly in the social sciences to be used to assess the quality of recent articles? I investigate whether this is the case using citation data for all articles in economics and political science published in 2006 and indexed in the Web of Science. I find that citations in the first two years after publication explain more than half of the variation in cumulative citations received over a longer period. Journal impact factors improve the correlation between the predicted and actual future ranks of journal articles when using citation data from 2006 alone but the effect declines sharply thereafter. Finally, more than half of the papers in the top 20% in 2012 were already in the top 20% in the year of publication (2006).     

Global research trends on bioflocculant potentials in wastewater remediation from 1990 to 2019 using a bibliometric approach

The preference of biofloculants over chemical flocculants in water and wastewater remediation systems has gained wider attention due to their biodegradability, innocuousness, safety to human and environmental friendliness. The present study aimed to evaluate research outputs on bioflocculant potentials in wastewater remediation from 1990 to 2019 using bibliometric analyses. To the best of our knowledge, this is the first bibliometric report in bioflocculant research. The subject bibliometric dataset was extracted from the Web of Science Core Collection (WoSCC) and Scopus using the Boolean, ‘bioflocculant* and waste*’ and analysed for indicators such as a yearly trend, productivity (authors, articles, country, institution and journal source), conceptual framework and collaboration network. We found 119 documents with 347 authors from 78 journal sources on the subject, an annual growth rate of 12·1%, and average citations/document of 15·08. Guo J. and Wang Y. were the top researchers with 15 and 12 outputs respectively. China (42%) and South Africa (9·24%) ranked the top two dominant countries in the field. The top journals were Bioresource Technology (9 papers, 506 citations), Applied Microbiology and Biotechnology (5 papers, 268 citations), whereas, the top institution was Chengdu University of Information and Technology (n = 9 documents) followed by Sichuan Univ. Sci. & Engn, China (n = 8 documents). This study found that lack of intercountry collaboration and research funding adversely affects research participants in the field.     

基于CiteSpace分析铜绿假单胞菌耐药性研究热点与趋势

【背景】铜绿假单胞菌(Pseudomonas aeruginosa)是临床引发感染的主要病原菌之一,对多种抗菌药物均有耐药性,临床治疗难度大,对该病原菌耐药性的研究一直备受关注。【目的】基于CiteSpace可视化功能,探究铜绿假单胞菌耐药性研究现状、热点与发展趋势。【方法】利用文献计量分析法,以2014–2021年中国知网(CNKI)、万方数据库(Wanfang)、Web of Science (WoS)共8 996篇铜绿假单胞菌耐药性的中英文文献为分析样本,运用Citespace软件对文献发文量、作者合作网络、国家和机构合作网络、文献共被引及期刊分析、关键词聚类、突现等方面进行分析,以探究该研究主题的研究热点及趋势。【结果】英文文献发文量增长速度高于中文文献;我国文献发文量仅次于美国、印度,在该领域科研成果贡献度较高,国际学术影响力较大;中英文文献中均对院内感染疾病和耐碳青霉烯类铜绿假单胞菌持高关注度。然而,中文文献较关注铜绿假单胞菌耐药性的临床防治问题,英文文献则较关注铜绿假单胞菌耐药性的基础研究。【结论】国内外铜绿假单胞菌耐药性研究对院内感染疾病及新型耐药菌的产生与防治关注度最高,暗示以上研究主题是该领域的研究热点与趋势。     

基于知识图谱的植物功能性状与环境研究前沿态势分析

为系统了解国际上植物功能性状与环境的研究进展,该研究基于Web of Science数据来源,采用Web of Science数据库分析工具和Thomson Data Analysis(TDA)进行数据清理和统计分析,并利用Ucinet和Netdraw、Excel等软件进行可视化作图。结果表明:(1)近26年来,植物功能性状与环境研究论文数量呈持续稳步增长态势,尤其近9年来呈加速增长态势。(2)近9年来,研究主题主要围绕比叶面积、叶面积(指数)、光合作用(性能)、叶厚度、叶形态、叶氮含量、叶绿素、叶绿素荧光、比根长等功能指标,及光照、温度、水(水分利用效率、干旱等)、肥(氮、磷为主)、CO2等环境因子展开;化学计量学在该领域应用广泛。(3)2009—2017年间,欧美等发达国家是该领域研究的主要力量。美国发文数量和文献质量均为世界领先。中国在该领域的发文量居第二位,仅次于美国,但文献篇均被引和H指数较低。中国科学院发文量以绝对优势居第一位,但文献质量有待进一步提升。(4)该领域载文量Top10期刊8种为JCR分区Q1区、2种为Q2区。其中,Plant and Soil和Plant Ecology载文量分居第一位和第二位。(5) Top10高被引论文发表于8种期刊,其第一作者分别来自美国、荷兰、加拿大、德国和法国。     

Global biodiversity research during 1900–2009: a bibliometric analysis

We performed a bibliometric analysis of published biodiversity research for the period of 1900–2009, based on the Science Citation Index (SCI) database. Our analysis reveals the authorial, institutional, spatiotemporal, and categorical patterns in biodiversity research and provides an alternative demonstration of research advancements, which may serve as a potential guide for future research. The growth of article outputs has exploded since the 1990s, along with an increasing collaboration index, references, and citations. Ecology, environmental sciences, biodiversity conservations, and plant science were most frequently used subject categories in biodiversity studies, and Biological Conservation, Journal of Soil and Water Conservation, Conservation Biology and Biodiversity and Conservation were most active journals in this field. The United States was the largest contributor in global biodiversity research, as the U.S. produced the most single-country and collaborative articles, had the greatest number of top research institutions, and had a central position in collaboration networks. We perceived an increasing number of both internationally collaborative and inter-institutionally collaborative articles, with the latter form of collaboration being more prevalent than the former. A keyword analysis found several interesting terminology preferences, confirmed conservation’s central position as a topic in biodiversity research, revealed the adoption of advanced technologies, and demonstrated keen interest in both the patterns and underlying processes of ecosystems. Our study reveals patterns in scientific outputs and academic collaborations and serves as an alternative and innovative way of revealing global research trends in biodiversity.     

Cytogenetic findings in over 2000 amniocenteses.

Between 1971 and 1981, 58 (2.8%) of 2037 amniocenteses performed in Vancouver revealed chromosome abnormalities, 25 of which were trisomy 21. Of the 58 referrals that yielded abnormalities, 37 (63.8%) were for a maternal age of 38 years or more. The rates of detection of such abnormalities for single-year intervals of maternal age beyond 35 years were comparable to those calculated from pooled data obtained in multicentre studies in the United States, Canada and Europe.     

Bibliometric analysis of recent sodium channel research

Although sodium channels have been a hot multidisciplinary focus for decades and most of nerve system drugs worked on alerting sodium channel function, the trends and future directions of sodium channel studies have not been comprehensive analyzed bibliometrically. Herein, we collected the scientific publications of sodium channels research and constructed a model to evaluate the current trend systematically.

Publications were selected from the Web of Science Core Collection (WoSCC) database from 2013 to 2017. Microsoft Excel 2016, Prism 6, and CiteSpace V software were used to analyze publication outputs, journal sources, countries, territories, institutions, authors, and research areas. A total of 4,275 publications on sodium channel research were identified. PLoS ONE ranked top for publishing 170 papers. The United States of America had the largest number of publications (1,595), citation frequency (19,490), and H-index (53). S. G. Waxman (62 publications) and W. A. Catterall (585 citations) were the most productive authors and had the greatest co-citation counts. This is the first report that shows the trends and future development in sodium channel publications, and our study provides a clear profile for the contribution to this field by countries, authors, keywords, and institutions.     

Universality of Citation Distributions for Academic Institutions and Journals

Citations measure the importance of a publication, and may serve as a proxy for its popularity and quality of its contents. Here we study the distributions of citations to publications from individual academic institutions for a single year. The average number of citations have large variations between different institutions across the world, but the probability distributions of citations for individual institutions can be rescaled to a common form by scaling the citations by the average number of citations for that institution. We find this feature seems to be universal for a broad selection of institutions irrespective of the average number of citations per article. A similar analysis for citations to publications in a particular journal in a single year reveals similar results. We find high absolute inequality for both these sets, Gini coefficients being around 0.66 and 0.58 for institutions and journals respectively. We also find that the top 25% of the articles hold about 75% of the total citations for institutions and the top 29% of the articles hold about 71% of the total citations for journals.     

Bibliometric analysis of human–wildlife conflict: From conflict to coexistence

Human–wildlife conflict (HWC) is a significant challenge for biodiversity conservation and sustainable development. Effective mitigation of HWC requires a multidisciplinary, holistic, and comprehensive approach. In the past two decades, scientific research has focused on HWC. It can be expected that in the next few years, the number of HWC literature will continue to increase. In this study, the VOSviewer version 1.6.16, and Bibliometrix packages in R were used to conduct a quantitative review of the HWC literature and investigate its social network and development trends. The results show that 2197 publications about HWC have been published in 320 journals from 128 countries in 2003–2021. The United States is the largest producer with 893. Among all journals, Biological Conservation ranked first in terms of total link strength, number of links, documents, and citations. The analysis of keywords, development trends, and development themes shows that the research on HWC mainly includes three aspects: the conflict between humans and carnivores, conflict between humans and herbivores, and protection of the human dimension. The main focus of the research has shifted from the conflict itself to the coexistence of humans and wild animals through the integration of natural and economic factors. It is expected that HWC research will play a key role in generating the interdisciplinary scientific knowledge needed to promote biodiversity conservation and sustainable development.     

Citation decay in animal science

The half-life of literature in animal science is about 5–6 years, which is short in comparison to many other fields of scientific research. Only about 10% of the citations in animal-science articles refer to articles which were published more than 20 years before the appearance of the papers which cite them. Probably only a small proportion of the older works cited deserve to be called classics. Historical reviews of literature in scientific specialisations are likely to recover many still useful data and ideas.