Highly cited publication performance in the ophthalmology category in the Web of Science database:a bibliometric analysis

AIM:To determine and evaluate the features of highly cited articles(HCAs)in the ophthalmology category in the Science Citation Index Expanded(SCI-EXPANDED)from 1991 to 2020.METHODS:The Web of Science Core Collection documents with at least 100 citations from their publication year until December 31,2020,were evaluated as highly cited.The examined features were the distribution of yearly output and its average number of per publication,HCAs,authors,institutions,journals,and nations.The publication performance of nations and organizations was assessed using six publication indicators.The Y-index was employed to compare the research outputs of various authors.RESULTS:Publications that had cited the most references were highly published in high-impact factor journals.The United States of America came out on top across all six publication indicators,and it was home to eight of the top 10 most productive institutions.The articles written by Breivik et al(2006)and Farrar et al(2001)were highly cited and had a significant impact in 2020.The authors had a higher number of highly cited articles published as corresponding authors than as first authors.CONCLUSION:The findings of the present study highlight the current scope of global research in ophthalmology.The findings can help policy-makers and advisory groups of research centers to develop future policies.In addition,the findings can guide researchers in this field.

Analysis of highly cited articles published in Chinese Medical Journal in 2010

Scientific journals are more likely to publish those articles which will be highly cited after theirpublication. To improve the quality and the impact of the Chinese Medical Journal （CMJ）, the distribution of highly cited articles published in CMJ in 2010 was analyzed and reported in this article.

Factors Influencing Cities’ Publishing Efficiency

Purpose： Recently, a vast number of scientific publications have been produced in cities in emerging countries. It has long been observed that the publication output of Beijing has exceeded that of any other city in the world, including such leading centres of science as Boston, New York, London, Paris, and Tokyo. Researchers have suggested that, instead of focusing on cities＇ total publication output, the quality of the output in terms of the number of highly cited papers should be examined. However, in the period from 2014 to 2016, Beijing produced as many highly cited papers as Boston, London, or New York. In this paper, another method is proposed to measure cities＇ publishing performance by focusing on cities＇ publishing efficiency （i.e., the ratio of highly cited articles to all articles produced in that city）.Design/methodology/approach： First, 554 cities are ranked based on their publishing efficiency, then some general factors influencing cities＇ publishing efficiency are revealed. The general factors examined in this paper are as follows： the linguistic environment of cities, cities＇ economic development level, the location of excellent organisations, cities＇ international collaboration patterns, and their scientific field profile. Furthermore, the paper examines the fundamental differences between the general factors influencing the publishing efficiency of the top 100 most efficient cities and the bottom 100 least efficient cities.Findings： Based on the research results, the conclusion can be drawn that a city＇s publishing efficiency will be high if meets the following general conditions： it is in a country in the Anglosphere-Core; it is in a high-income country; it is home to top-ranked universities and/ or world-renowned research institutions; researchers affiliated with that city most intensely collaborate with researchers affiliated with cities in the United States, Germany, England, France, Canada, Australia, and Italy; and the most productive scientific disciplines of highly cited articles are published in high-impact multidisciplinary journals, disciplines in health sciences （especially general internal medicine and oncology）, and disciplines in natural sciences （especially physics, astronomy, and astrophysics）.Research limitations： It is always problematic to demarcate the boundaries of cities （e.g., New York City vs. Greater New York）, and regarding this issue there is no consensus among researchers. The Web of Science presents the name of cities in the addresses reported by theauthors of publications. In this paper cities correspond to the spatial units between the country/ state level and the institution level as indicated in the Web of Science. Furthermore, it is necessary to highlight that the Web of Science is biased towards English-language journals and journals published in the field of biomedicine. These facts may influence the outcome of the research.Practical implications： Publishing efficiency, as an indicator, shows how successful a city is at the production of science. Naturally, cities have limited opportunities to compete for components of the science establishment （e.g., universities, hospitals）. However, cities can compete to attract innovation-oriented companies, high tech firms, and R＆D facilities of multinational companies by for example establishing science parks. The positive effect of this process on the city＇s performance in science can be observed in the example of Beijing, which publishing efficiency has been increased rapidly. Originality/value： Previous scientometric studies have examined cities＇ publication output in terms of the number of papers, or the number of highly cited papers, which are largely size dependent indicators; however this paper attempts to present a more quality-based approach.