Lotka's law: A testing procedure

Pao, Miranda Lee

doi:10.1016/0306-4573(85)90055-x

Cited by 193 publications

(186 citation statements)

References 11 publications

Supporting

Mentioning

158

Contrasting

Unclassified

Order By: Relevance

“…After standardization of authors' names (we began with a total of 3538 authors and after standardization we ended with a total of 3064 single authors), Lotka's law was also applied using the method proposed by Pao (1985), including both the first author and co-authors in the analysis. According to Lotka's law the number of authors (y x ) with x number of articles is inversely proportional to x.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Research on women in science and higher education: a bibliometric analysis

2015

View full text Add to dashboard Cite

The main objective of this paper is to study the development and growth of scientific literature on women in science and higher education. A total of 1415 articles and reviews published between 1991 and 2012 were extracted from the Thomson Reuters Web of Science database. Standard bibliometric indicators and laws (e.g. Price's, Lotka's, and Bradford's laws) were applied to these data. In addition, the Gender Inequality Index (GII) was obtained for each country in order to rank them. The results suggest an upward trend not only in the number of papers but also in the number of authors per paper. However, this increase in the number of authors was not accompanied by greater international collaboration. The interest in gender differences in science extends too many authors (n = 3064), countries (n = 67), and research areas (n = 86). Data showed a high dispersion of the literature and a small set of core journals focused on the topic. Regarding the research areas, the area with the highest frequency of papers was Education and Educational Research. Finally, our results showed that countries with higher levels of inequality (higher GII values) tend to present higher relative values of scientific productivity in the field.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Lotka's law was applied using the method proposed by Pao (1985), and all the authors of publications (first authors and collaborators) were considered for the analysis. To determine whether the data fitted Lotka's law, the n value was calculated using the least squares method (n = 3.40), yielding a C value of 0.88.…”

Section: Number Of Authorsmentioning

confidence: 99%

Research on women in science and higher education: a bibliometric analysis

2015

View full text Add to dashboard Cite

show abstract

“…Using above formula and the modifications given by Pao, Fang (Fang and Fang 1995;Nicholls 1986;Pao 1985) the values of C and n for the solid waste-related researches in Iran were determined to be 0.803 and 2.738, respectively. The Kolmogorov-Smirnov Goodness-of-Fit test shows that the literature does follow Lotka's law (P value = 0.979).…”

Section: Resultsmentioning

confidence: 99%

A bibliometric analysis on the solid waste-related research from 1982 to 2013 in Iran

Mesdaghinia

Mahvi

Nasseri

et al. 2015

Int J Recycl Org Waste Agricult

View full text Add to dashboard Cite

Background A bibliometric analysis was used to assess the trend of solid waste-related publications produced by Iran and indexed in Scopus from 1982 to 2013. The study aims to analyze the distribution of languages, countries, institutes, journals, author keywords, authorship pattern and co-authorship relationships. Results The publication outputs showed an exponential trend (R 2 = 0.98) and increased by 45.3 % per year from 1982 to 2011. It was received with a decreasing trend to 44 papers at the end of 2013. Journal of Environmental Studies published the most papers. University of Tehran (25 %), Islamic Azad University (8.24 %), Tehran University of Medical Sciences (7.35 %) played active roles in the publication and Abduli MA was the most productive author (9.12 %) in this field. The English language was dominant language of all publications (88.24 %). The appearance of keywords namely ''Heavy metals'', ''landfill leachate'' and ''site selection'' reveals the importance of release of heavy metals through landfill leachates and site selection issues in Iran. Conclusions A downward trend in the number of publications is likely to be continued in future years. The highest cooperation was found among the capital universities in Iran and other institutions had a minor role in the production of articles. It is hoped that transferring the experiences by main universities and starting up teamwork activities may increase the number of researches in this field. It is expected that this study could be the basis for a better understanding of development of researches related to solid waste in Iran.

show abstract

“…The law is defined in several places (v.g. [LOTKA, 1926;GLÄNZEL, 2003]), and different methods for parameter estimation, such as maximum likelihood [NICHOLLS, 1986[NICHOLLS, , 1989, and for assessing the law's fit [PAO, 1985;NICHOLLS, 1986NICHOLLS, , 1989LOUGHNER, 1992], are available.…”

Section: Discussionmentioning

confidence: 99%