On Theory And Application Of Hirsch-Type Indexes

2013 ◽  
Author(s):  
Wolfgang Glänzel
Keyword(s):  
Scientific Output ◽  
Bibliometric Indicators ◽  
Scientific Performance ◽  
Rank Statistics ◽  
H Index

In 2005, J.E. Hirsch proposed a new measure "to quantify an individual's scientific output". He called his measure, which is based on individual citation rank statistics, h-index. It was shown that the h-index correlates with other bibliometric indicators of ‘significance’ but it was also stressed that scientific performance can hardly…En 2005, J.E. Hirsch proposait une nouvelle mesure « pour quantifier la production scientifique individuelle ». Il appelait cette mesure, basée sur un classement statistique de citations personnelles, la h index. Il a été démonté que la h-index peut être mis en corrélation avec d’autres indicateurs bibliométriques « significatifs », mais il a également été souligné que la performance scientifique peut… 

scholarly journals Bibliometric Indicators for Evaluating the Quality of Scientific Publications

2014 ◽  
Vol 15 (2) ◽  
pp. 258-262 ◽  
Author(s):  
Medha A Joshi
Keyword(s):  
Scientific Output ◽  
Bibliometric Indicators ◽  
Scientific Publications ◽  
Scientific Impact ◽  
H Index ◽  
Factors Affecting ◽  
The Individual ◽  
Quantitative Indicators ◽  
Journal Impact

ABSTRACT Evaluation of quality and quantity of publications can be done using a set of statistical and mathematical indices called bibliometric indicators. Two major categories of indicators are (1) quantitative indicators that measure the research productivity of a researcher and (2) performance indicators that evaluate the quality of publications. Bibliometric indicators are important for both the individual researcher and organizations. They are widely used to compare the performance of the individual researchers, journals and universities. Many of the appointments, promotions and allocation of research funds are based on these indicators. This review article describes some of the currently used bibliometric indicators such as journal impact factor, crown indicator, h-index and it's variants. It is suggested that for comparison of scientific impact and scientific output of researchers due consideration should be given to various factors affecting theses indicators. How to cite this article Joshi MA. Bibliometric Indicators for Evaluating the Quality of Scientific Publications. J Contemp Dent Pract 2014;15(2):258-262.

The unknown acquaintance, or the impact factor and others

2007 ◽  
Vol 148 (4) ◽  
pp. 165-171
Author(s):  
Anna Berhidi ◽  
Edit Csajbók ◽  
Lívia Vasas
Keyword(s):  
Impact Factor ◽  
Citation Analysis ◽  
Index Number ◽  
Scientific Performance ◽  
H Index ◽  
Master List ◽  
The Many ◽  
The Impact

Nobody doubts the importance of the scientific performance’s evaluation. At the same time its way divides the group of experts. The present study mostly deals with the models of citation-analysis based evaluation. The aim of the authors is to present the background of the best known tool – Impact factor – since, according to the authors’ experience, to the many people use without knowing it well. In addition to the „nonofficial impact factor” and Euro-factor, the most promising index-number, h-index is presented. Finally new initiation – Index Copernicus Master List – is delineated, which is suitable to rank journals. Studying different indexes the authors make a proposal and complete the method of long standing for the evaluation of scientific performance.

scholarly journals An updated h-index measures both the primary and total scientific output of a researcher

Discoveries ◽  
2015 ◽  
Vol 3 (3) ◽  
pp. e50 ◽  
Author(s):  
Octavian Bucur ◽  
◽  
Alexandru Almasan ◽  
Roman Zubarev ◽  
Mark Friedman ◽  
...  
Keyword(s):  
Scientific Output ◽  
H Index

scholarly journals Scientific Production in Dentistry: The National Panorama through a Bibliometric Study of Italian Academies

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Felice Lorusso ◽  
Francesco Inchingolo ◽  
Antonio Scarano
Keyword(s):  
Scientific Research ◽  
Cost Effective ◽  
Scientific Output ◽  
Study Data ◽  
Scientific Production ◽  
National Database ◽  
H Index ◽  
Academic Researchers ◽  
Scopus Database ◽  
Dental Schools

Background. The academic scientific research in the field of dentistry has rapidly increased in the last 20 years under the pressure of the multidisciplinary technological advancements and the growing demand for new predictable and cost-effective techniques and materials. The aim of the present investigation was to analyze the academic scientific production conducted by Italian Academies and Dental Schools. Methods. The list of MED/28 academic researchers, associate and full professors, and academic affiliations was collected from the national database of CINECA to evaluate the scientific output of the Italian Universities. The complete list of scientific contributions and the bibliometric parameters were recorded in the Scopus database. Results. The scientific production of 37 Italian Universities, 416 researchers, and 23689 papers was evaluated. The measurement of total academic papers, citations, h-index, and relative citation ratio (RCR) was calculated. The study data showed an increase of the academic scientific production over the last 5 years. Conclusions. The results presented show how scientific research is increasingly pursued by dental clinicians.

scholarly journals Use of H-Index and Other Bibliometric Indicators to Evaluate Research Productivity Outcome on Swine Diseases

PLoS ONE ◽  
2016 ◽  
Vol 11 (3) ◽  
pp. e0149690 ◽  
Author(s):  
Ivan Díaz ◽  
Martí Cortey ◽  
Àlex Olvera ◽  
Joaquim Segalés
Keyword(s):  
Research Productivity ◽  
Bibliometric Indicators ◽  
H Index ◽  
Swine Diseases

scholarly journals Is science a pyramid scheme? The correlation between an author's position in the academic hierarchy and her scientific output per year

2020 ◽  
Author(s):  
Charleeze Ponzi
Keyword(s):  
Scientific Output ◽  
Bottom Of The Pyramid ◽  
Scientific Performance ◽  
Scientometric Indicators ◽  
Scientific Careers ◽  
Large Numbers ◽  
Pyramid Scheme ◽  
Sphere Of Influence ◽  
Prolific Authors ◽  
The Way

A grievance expressed by some PhD students and Postdocs is that science works like a pyramid scheme: Young scientists are encouraged to invest into building scientific careers although the chances at remaining in science are extremely slim. This issue is investigated quantitatively by connecting it with the way authorship on papers is distributed. I analyzed a large bibliographic dataset made available by Microsoft under the name Academic Graph to create a histogram with the number of articles an author produces per year. The histogram has the shape of a pyramid, and different layers in it correlate with positions in the academic hierarchy. The super-prolific authors at the top of the pyramid with more than 40 publications per year are usually heads of large institutes with many subgroups and large numbers of PhD students, while the bottom of the pyramid is populated by PhD students and Postdocs with less than 5 publications per year. The mechanism that allows 'manager scientists' to appropriate publications generated in their sphere of influence is related to other issues, such as the evaluation of scientific performance based on scientometric indicators and the lenient enforcement of authorship rules. A new index, the Ponzi factor, is proposed to quantify this phenomenon.

scholarly journals Use Of Altmetric And Bibliometric Indicators To Measure Scientific Productivity In The Fields Of Life And Earth Sciences: Case Study From Haiti

2021 ◽  
Vol 17 (21) ◽  
pp. 316
Author(s):  
Jasmine Césars ◽  
Magline Alexis ◽  
Evens Emmanuel
Keyword(s):  
Rank Correlation ◽  
Scientific Productivity ◽  
Quantitative Information ◽  
Google Scholar ◽  
Bibliometric Indicators ◽  
H Index ◽  
Environment And Health ◽  
Normality Test ◽  
Kolmogorov Smirnov ◽  
Number Of Citations

The objective of this study was to carry out, based on certain bibliometric and altimetric indicators, a summary assessment of the scientific productivity of Quisqueya University’s researchers in 3 specific fields: agronomy, the environment and health. An experimental framework was designed and implemented based on the quantitative information available on the academic social network ResearchGate, and on SCOPUS and Google scholar, out of a total of 12,731 citations enumerated for Quisqueya University as of December 31, 2020, 19% were for the environment, 19.3% were for health, 59.9% for agronomy and 1.8% for other sectors. All the sectors recorded a significant increase for the RG score altmetric indicator and for the two bibliometric indicators: number of citations and H-index. The data collected were analyzed using XLSTAT and R software. The Kolmogorov-Smirnov normality test was applied for each of the indicators. Pearson's rank correlation was used to calculate the correlations between the altmetric indicator (RG-Score) from ResearchGate and the bibliometric indicators (citation and H-index) from Google Scholar and Scopus. A significant positive correlation of α = 0.918 was observed between the number of citations on ResearchGate and on Google Scholar. a result in the same direction (α = 0.991) is also observed between the number of citations on ResearchGate and on Scopus. These correlations allow us to conclude that the work of these researchers was cited in publications published in journals referenced in the Web of Science by a rate exceeding 90%.

scholarly journals Bibliometric Analysis of Global Research Trends on Ultrasound Microbubble: A Quickly Developing Field

2021 ◽  
Vol 12 ◽  
Author(s):  
Haiyang Wu ◽  
Linjian Tong ◽  
Yulin Wang ◽  
Hua Yan ◽  
Zhiming Sun
Keyword(s):  
Breast Cancer ◽  
United States ◽  
Drug Delivery ◽  
Hot Spots ◽  
Drug Carriers ◽  
The United States ◽  
Scientific Output ◽  
Ultrasound Diagnosis ◽  
H Index ◽  
Journal Citation Reports

Background: Microbubbles are widely used as highly effective contrast agents to improve the diagnostic capability of ultrasound imaging. Mounting evidence suggests that ultrasound coupled with microbubbles has promising therapeutic applications in cancer, cardiovascular, and neurological disorders by acting as gene or drug carriers. The aim of this study was to identify the scientific output and activity related to ultrasound microbubble through bibliometric approaches.Methods: The literature related to ultrasound microbubble published between 1998 and 2019 was identified and selected from the Science Citation Index Expanded of Web of Science Core Collection on February 21, 2021. The Scopus database was also searched to validate the results and provided as supplementary material. Quantitative variables including number of publications and citations, H-index, and journal citation reports were analyzed by using Microsoft Excel 2019 and GraphPad Prism 8.0 software. VOS viewer and CiteSpace V were used to perform coauthorship, citation, co-citation, and co-occurrence analysis for countries/regions, institutions, authors, and keywords.Results: A total of 6088 publications from the WoSCC were included. The United States has made the largest contribution in this field, with the majority of publications (2090, 34.3%), citations (90,741, 46.6%), the highest H-index (138), and close collaborations with China and Canada. The most contributive institution was the University of Toronto. Professors De Jong N and Dayton P A have made great achievements in this field. However, the research cooperation between institutions and authors was relatively weak. All the studies could be divided into four clusters: “ultrasound diagnosis study,” “microbubbles’ characteristics study,” “gene therapy study,” and “drug delivery study.” The average appearing years (AAY) of keywords in the cluster “drug delivery study” was more recent than other clusters. For promising hot spots, “doxorubicin” showed a relatively latest AAY of 2015.49, followed by “nanoparticles” and “breast cancer.”Conclusion: There has been an increasing amount of scientific output on ultrasound microbubble according to the global trends, and the United States is staying ahead in this field. Collaboration between research teams still needs to be strengthened. The focus gradually shifts from “ultrasound diagnosis study” to “drug delivery study.” It is recommended to pay attention to the latest hot spots, such as “doxorubicin,” “nanoparticles,” and “breast cancer.”

Multiple h-index: a new scientometric indicator

2015 ◽  
Vol 33 (3) ◽  
pp. 547-556 ◽  
Author(s):  
Mousa Yaminfirooz ◽  
Hemmat Gholinia
Keyword(s):  
Correlation Coefficients ◽  
Coefficient Matrix ◽  
Scientific Output ◽  
The Other ◽  
Scientometric Indicator ◽  
Scientific Impact ◽  
H Index ◽  
Content Type ◽  
Explained Variance ◽  
Correlation Coefficient Matrix

Purpose – This paper aims to evaluate some of the known scientific indexes by using virtual data and proposes a new index, named multiple h-index (mh-index), for removing the limits of these variants. Design/methodology/approach – Citation report for 40 researchers in Babol, Iran, was extracted from the Web of Science and entered in a checklist together with their scientific lifetimes and published ages of their papers. Some statistical analyses, especially exploratory factor analysis (EFA) and structural correlations, were done in SPSS 19. Findings – EFA revealed three factors with eigenvalues greater than 1 and explained variance of over 96 per cent in the studied indexes, including the mh-index. Factors 1, 2 and 3 explained 44.38, 28.19 and 23.48 of the variance in the correlation coefficient matrix, respectively. The m-index (with coefficient of 90 per cent) in Factor 1, a-index (with coefficient of 91 per cent) in Factor 2 and h- and h2-indexes (with coefficients of 93 per cent) in Factor 3 had the highest factor loadings. Correlation coefficients and related comparative diagrams showed that the mh-index is more accurate than the other nine variants in differentiating the scientific impact of researchers with the same h-index. Originality/value – As the studied variants could not satisfy all limits of the h-index, scientific society needs an index which accurately evaluates individual researcher’s scientific output. As the mh-index has some advantages over the other studied variants, it can be an appropriate alternative for them.

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