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The purpose of this research is to identify the productivity pattern of article in Indonesia 1978-2007, and it is to test and analyze the productivity distribution of article author in the field of Library and Information. This research uses quantitative approach through bibliometric analysis based on Lotka’s law. The data of this research is taken from the Index of Indonesian Learned Periodicals and database of PDII LIPI from 1978-2007. It is found that there are 826 authors and 1245 articles of Library and Information Science. The result of this research shows that the rate of the authors contribution to one article is 66.02 percent. Goodness-of-fit test using Kolmogorov-Smirnov test indicates that critical value in 0.05 is 0.0473 and maximum deviation value is 0.0775. It means that the maximum deviation is bigger than critical value, so the null hypothesis is rejected and difference between the Lotka’s law theoretic distribution and the distribution of article authors in the field of Library and Information Science.

The purpose of this research was to examine the validity of Lotka and Pao’s laws with authorship distribution of "Computer Science" and "Artificial Intelligence" fields using Web of Science (WoS) during 1986 to 2009 and comparing the results of examinations. This study was done by using the methods of citation analysis which are scientometrics techniques. The research sample includes all articles in computer science and artificial intelligence fields indexed in the databases accessible via Web of Science during 1986-2009; that were stored in 500 records files and added to "ISI.exe" software for analysis to be performed. Then, the required output of this software was saved in Excel. There were 19150 articles in the computer science field (by 45713 authors) and 958 articles in artificial intelligence field (by 2487 authors). Then for final counting and analyzing, the data converted to “Excel” spreadsheet software. Lotka and Pao’s laws were tested using both Lotka’s formula: (for Lotka’s Law); also for testing Pao’s law the values of the exponent n and the constant c are computed and Kolmogorov-Smirnov goodness-of-fit tests were applied. The results suggested that author productivity distribution predicted in “Lotka's generalized inverse square law” was not applicable to computer science and artificial intelligence; but Pao’s law was applicable to these subject areas. Survey both literature and original examining of Lotka and Pao’s Laws witnessed some aspects should be considered. The main elements involved in fitting in a bibliometrics method have been identified: using Lotka or Pao’s law, subject area, period of time, measurement of authors, and a criterion for assessing goodness-of-fit.

This paper discusses the visibility of African scholars in the literature of Bibliometrics, as it appears in the Library and Information Science Abstract (LISA) from 1982-2010. Analysis was conducted on a list of 75 papers generated from the Abstract. The yearwise growth of the literature shows that single authorship dominates the literature, scoring 52% and the average number of publication per year was found to be 2.7. On the productivity of authors, Lotka’s formulation of inverse square law of scientific productivity was applied and found to be in harmony with the literature. Bradford-zipf Law for distribution of papers was also applied and found to be in conformity with the literature of Bibliometrics. Prolific authors were found to be 6 in number and their contributions falls between 3-16 papers within the 28 years period of the study. English language was found to be the dominant language with 91.3% score, and then followed by French with 8.7% score.

Este artículo explora la modelación del número de autores que colaboran en la publicación de un artículo. Con ese fin se analizaron la distribución geométrica, la distribución Poisson truncada, la distribución Poisson lognormal y la distribución Gauss Poisson inversa generalizada en la literatura producida sobre la Ley de Lotka desde 1922 hasta junio de 2010. Se encontró que la distribución Poisson lognormal estimó más cercanamente el valor total de los documentos observados seguida del modelo Poisson truncado, la distribución geométrica y finalmente el modelo Gauss Poisson inversa generalizada.In the literature produced about Lotka's law from 1922 to June 2010, the geometric distribution, truncated Poisson distribution, Poisson lognormal distribution, and the generalized inverse Gaussian Poisson distribution are studied to statistically model the number the authors who collaborate in the publication of an article. It was found that the Poisson lognormal distribution more closely estimated the total value of documents, followed by the truncated Poisson model, the geometric distribution, and finally the generalized inverse Gaussian Poisson distribution.

Este trabajo analiza la productividad científica de los autores que han publicado documentos en cuatro revistas de ciencia de la información editadas en Colombia desde 1978 a 2009. Se encontraron 555 autores, de los cuales 422 (76%) publicaron un único artículo y 78 (24%) publicaron 2 o más artículos. También se identificaron 11 autores como los más productivos con 21 y 7 artículos cada uno. El número de autores observados fueron estinados con los modelos del poder inverso generalizado, Gauss Poisson inversa generalizada y Poisson lognormal por el método de la máxima probabilidad. Las pruebas de ajuste estadístico chi-cuadrado y K-S mostraron que los tres modelos se ajustan a los datos observados en este trabajo.The scientific productivity of the authors who have published papers in four journals of library and information science from Colombia since 1978 to 2009, was analyzed. A total of 555 authors were found; 422 (76%) of them published a single article and 78 (24%) published 2 or more articles. Eleven authors were considered as the most productive with 21 and 7 articles respectively. The data was analyzed with the generalized inverse power, inverse generalized Gauss Poisson, and Poisson lognormal models by the maximum likelihood method. The statistical chi-square and K-S tests showed that the three models fit the observed data.

Analisa o crescimento da literatura produzida sobre a Lei de Lotka, assim como o crescimento dos autores produtores dessa literatura, de 1922 a 2003. Nesse período o crescimento da literatura segue o modelo exponencial, com taxa média de crescimento de 7,5% ao ano e taxa de duplicação a cada 9,6 anos. Também o número de autores produtores da literatura cresce à proporção de 7,3% ao ano, com período de duplicação a cada 10 anos. A estatística indica bom ajuste ao modelo exponencial, com R² de 0,985 para a literatura e 0,992 para os autores, ambos a um nível de significância de 0,01.The growth of literature produced on Lotka's law from 1922 to 2003, as well as the growth of authors producing that literature, is analyzed. The growth of literature follows an exponential model with an annual average of 7.5% growth and doubling its size every 9.6 years. The number of authors producing this literature grows at a rate of 7.3% per year and duplicating its volume every 10 years. The statistics indicate a good adjustment to the exponential model, with R² of 0.985 for literature and 0.992 for authors, both at a level of 0.01 significance.

O objetivo deste artigo é identificar, descrever e analisar os autores que conformam a elite numa subárea do campo da bibliometria: a produtividade dos autores, conhecida também como a Lei de Lotka. Como unidades de análises foi tomado cada um dos 376 diferentes autores produtores dos 390 artigos, capítulos de livros e trabalhos apresentados em congressos sobre a chamada Lei de Lotka, desde 1922 até 2003. Encontrou-se que a elite está formada por 17 autores que participaram da produção de cinco ou mais documentos cada um e contribuindo com pouco mais de uma terceira parte dos artigos.The objective of this article is to identify and analyze the authors who make up the elite in a sub-area of the bibliometric field: the author's productivity is also known as the "Lotka's law". The units of analysis were taken from 376 different authors producing of 390 articles, book chapters, and works presented in congresses, from 1922 up to 2003. The conclusion is that the elite was made up by 17 authors who had each one participated at least in the production of five or more documents totalizing a contribution of over a third of all documents.

This article develops the selection and analysis of the EnANPAD academic publications between 1997 and 2007. This source of information was object of rigorous and in depth research, including both the profile of the authors, the articles and the quotations. 216 articles were classified with 9,523 corresponding quotations. The quantitative analysis of the quotations aims to describe their characteristics and to test the applicability of the Lotka Law – LL, one to the bibliometric fundamentals, which states that the number of authors making n contributions is about 1 / n2 of those making one contribution. In mature scientific fields, it is expected that few scientists publish more and many publish a less, but under a certain distribution. It was possible to verify that the LL does not apply to the CSR, as it is tested against the quotations used. This means that the field is not mature, in scientific terms. It was also shown that the quotations of one year are not utilized in the following research year. Evidence shows the most frequent quotations are those of administration handbooks and famous authors not necessarily related to CSR. The area is dominated by the reproduction of the same ideas, strengthening the thesis of zone of intellectual comfort.

O objetivo deste artigo é identificar, descrever e analisar a frente de pesquisa numa subárea do campo da bibliometria: a produtividade dos autores, conhecida também como a “Lei de Lotka”. Identificaram-se os autores que formam a frente de pesquisa deste campo. Esses autores têm 10 ou mais artigos produzidos, qualificando-os como grandes produtores, e, em alguns casos como produtores moderados. Todos eles tem os trabalhos publicados no idioma inglês, e a grande maioria deles nos periódicos da chamada “corrente principal”, isto é, indexados no Science Citation Index ou no Social Science Citation Index. Verificaram-se a existência de covariação entre o nível de produtividade dos autores, os artigos publicados nos periódicos da chamada “corrente principal” e o idioma da publicação concomitantemente com a frequência de citações. Em outras palavras, para qualificar-se na frente de pesquisa deste campo, o autor tem que ser um grande ou moderado produtor, publicar no idioma inglês e nos periódicos considerados de corrente principal. Fora deste contexto, o uso da informação explicitada na forma de citações fica reduzido a um consumo local.The research front of a sub-area of bibliometrics: the author’s productivity, also known as the “Lotka’s law”, was analyzed. The authors who make up the research front of this field were identified. These authors have produced 10 or more articles, qualifying them as the major producers, although in some cases as moderate producers. They all have their works published in English, and the vast majority of them in journals of the so-called "principal current”, that is journals indexed by the Science Citation Index or the Social Science Citation Index. Covariation between author’s levels of productivity, articles published in journals of "principal current”, language of publication, and frequency of citations were observed. In other words, to qualify as being in the research front of a discipline the author has to be a great or moderate producer, publish in English and in journals considered in the mainstream. Outside this context, the use of the information in he form of citations is reduced to a local consumption.

El objetivo de este trabajo es estudiar el modelo epidémico como un proceso determinístico representado por un sistema de ecuaciones diferenciales. Este modelo es después aplicado a los autores productores de literatura sobre la Ley de Lotka desde 1922 hasta 2005. Se observa que esta sub-área de la bibliometría entró en un proceso epidémico a partir de 1965, que éste tiene una alta tasa de autores transeúntes, y que los autores que publican en idiomas diferentes al inglés encontraron el área ya en un estado epidémico.The objective of the present study is to analyse the epidemic model as a deterministic process represented by a system of differential equations and apply it to authors producing literature on Lotka's law from 1922 to 2005. An epidemic process starting in 1965 and showing a high rate or transient authors is observed. Those authors publishing in languages different from English found the area already infected.

Estuda a produção estratificada dos autores produtores da literatura sobre a Lei de Lotka de 1922 a 2003 e analisa essa produtividade através dos modelos Poisson lognormal e Gauss Poisson inversa generalizada. Para tanto, faz uso dos três tipos de contagem da literatura produzida: contagem direta, contagem completa e contagem fracionada. Os dados da pesquisa são avaliados usando o teste qui-quadrado ao 0.05 nível de significância. Ambos os modelos ajustam-se muito bem à distribuição da literatura produzida, porém a distribuição Poisson Gauss inversa generalizada produz um chi-quadrado menor e prediz melhor o total de autores do que a distribuição Poisson Lognormal.The stratified literature produced from 1922 to 2003 on Lotka's law is analyzed by using the Poisson lognormal and the Poisson Gauss inverse generalized models. For this purpose, three types of how the literature produced is counted are used: straight, complete and fractioned ones. The data of the research are evaluated by using the chi-square test at 0.05 significance level. Both models fit very well into the distribution of literature produced, but the Poisson Gauss inverse generalized distribution produces a smaller chi-square and better anticipates the total number of authors than the Poisson Lognormal distribution.

Background: The interest in bariatric surgery has considerably increased in the scientific community in the last two decades. We present a bibliometric analysis of scientific publications in bariatric surgery focusing on the period 2010-2014. Methods: We used the Web of Science database as source of data. The main bibliometric indicators were applied in order to assess the increase of scientific production, the productivity of journals, authors, and countries. Results: Bibliographic research retrieved 7860 papers for the period 2010-2014. The scientific production in bariatric surgery has an exponential distribution ( r = 97.9 %). A total of 76.8 % (21,893/28,505) of authors signed one paper and 307 (1.1 %) signed ten or more. The two most prolific journals are Obesity Surgery and SOARD, responsible for 22 % of the publication. The largest contributors in absolute number of articles are the USA, the UK, and Italy, while Sweden, Norway, and Switzerland are the most prolific nations after adjustment for the number of inhabitants and prevalence of obesity. Conclusion: Bariatric surgery has been a field of intense research in the last 20 years. We observed a growing interest of non-surgical journals and an increasing participation of new countries. Nevertheless, latest trends suggest a saturation of scientific production in this field. [ABSTRACT FROM AUTHOR]

The paper examines the distribution of authorship of papers on RFID to examine the validity of Lotka's Law. Papers from Web of Science on Radio Frequency Identification (RFID) for the years 1990 to 2010 were collected for the study. Lotka's Law is applied in its generic form, by using the least square technique, linear equation and finding the value of the constants and testing the same through Kolmogorov Smirnov Test and finding the Correlation Co-efficient. The values of exponent n and constant C obtained prove that Lotka's Law does not hold good for the authorship distribution pattern in (RFID) research. [ABSTRACT FROM AUTHOR]

The study is based on the articles published in the open access journal, Advances in Anthropology during the year 2013-2014 covering 59 articles in 8 issues having 1750 citations. Data has been collected from Advances in Anthropology from the Directory of Open Access Journals. Data has been analyzed by using excel sheet by year, types of document, trend of research, author productivity, journal productivity etc. The citation study has been carried out to find out the various sources of literature used by the researchers in the field of Anthropology. A rank list of journals is also prepared to find out the core journals based on the citation frequencies. Applicability of Bradford's Law of scattering is tested here to identify the core journals in the field of anthropology. Lotka's Law of Author Productivity is also tested to find out the most active authors in anthropology. Authorship Pattern has been studied to know whether collaborative or individual research is mostly done in the field of Anthropology. In this way trend of research, growth of research, type of documents, etc are analyzed. It has been observed that the articles published in the year 2007 have been cited maximum number of times i.e. 140 times and the journal Nature is the most popular journal for the anthropologists. Bradford's Law of Journal Productivity is applicable but Lotka's Law of Author's Productivity does not follow here. From the study it has also been identified that individual research is more prominent than collaborative research and Physical Anthropology is the most promising field of research. [ABSTRACT FROM AUTHOR]

Facebook is an online social networking site. It allows registered users to create profiles, upload photos and video, send messages and keep in touch with friends, family and colleagues. It is a very popular social networking site. Librarians use it for official and personal communication purpose. The present study examines the participation of librarians in Facebook by testing whether it follows the pattern given by Lotka's law. The result shows that it does not The paper analyses the reasons and also provides the methods of collecting data for bibliometric study. [ABSTRACT FROM AUTHOR]

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This paper describes the relative growth rate and doubling time and activity index and Lotka's law apply on the publications of diabetes and allied diseases during 1995-2013. The study found that steady growth rate in terms of productivity was observed throughout the period of study. There was a sudden increase noticed in 2002, 2009, and 2012 while a declining trend was observed in 1996, 2003, and 2013. The calculated values of Maximum Likelihood Estimator, n and k are 0.24, 2.66 and 0.78 respectively. The C.V. at 0.05 significant level for 29 degrees of freedom is 42.56 and the calculated value of Chi-Square (X²) obtained in this case is 5309.368. Afterwords, the performance of researchers started diminishing. It was supported by SPI that ranges between 9 and 10 only. [ABSTRACT FROM AUTHOR]

This paper assesses the degree of author concentration in seven economics journals, which were published in India during 1990-2002. To measure the degree of author concentration, Lotka's Law was used. Moreover, we also make an exploratory analysis of the geographic, economics subfield and institutional concentration in 704 economics journals. An important finding of this paper is that specialized journals in the sample report the highest degree of author concentration. This result is quite similar to the findings by Cox and Chung (1991). Furthermore, there are several instances showing that the journals lean towards certain norms; this may affect the flow of innovative ideas into economics. We conclude that a knowledge activity, involving the high degree of concentration and a biased publication process, may affect the flow of new ideas into the discipline.

Describe la naturaleza de la distribución del poder inverso generalizado por el método de los mínimos cuadrados de la regresión lineal. Se describe paso a paso la forma de aplicación del modelo a los datos estudiados por Oliveira sobre la literatura de jaca. El modelo del poder inverso generalizado por el método de los mínimos cuadrados y la prueba Kolmogorov-Smirnov fueron usados para evaluar el ajuste de los datos observados y esperados. Con n = - 2.14, C = 0.648515 y al 0.01 nivel de significación, se verificó que el valor crítico fue de 0.202177 con un desvío máximo de 0.151285, por lo tanto, esta literatura se ajusta al modelo de Lotka.The nature of the generalized inverse power distribution by the minimum least squared method is described. A step-by-step application process of this distribution model is offered. To illustrate the application process data collected and studied by Oliveira on Jackfruit literature was used. The generalized inverse power distribution by the minimum least squared method and the Kolmogorov-Smirnov test was used to evaluate the fit of the observed and expected data. With n = - 2.14 and C = 0.648715 at 0,01 level of significance, a critical value of 0.202177 with a maximum deviation of 0.151285, was observed. Therefore, the literature fits Lotka's model.

Purpose – The purpose of this paper is to study and analyse the authorship pattern, degree of collaboration, prepare list of prolific authors and test Lotka’s law of scientific productivity in spacecraft technology research. Design/methodology/approach – Data are collected from the print versions of three journals in the field of spacecraft technology for the period 2001-2011. In all 154 volumes containing 1,907 papers have been analysed, and data are presented in different table headings. Findings – Study reveals that 4,355 authors have contributed 1,907 papers. Journal of Spacecraft and Rockets has published maximum (1,487) number of papers during the study period. Multi-authored papers with 87.15 per cent of contributions have dominated this field of research. Journal of Spacecraft Technology has recorded highest degree of collaboration of 0.90. James M. Longuski has published 20 papers in Journal of Spacecraft and Rockets during the period 2001-2011. Lotka’s law of scientific productivity is tested and conforms only partially. Research limitations/implications – Study is restricted only for the period 2001-2011, and the data are collected from the print versions of three journals in the field of spacecraft technology research. Originality/value – As far as space science and technology is concerned, there are not many bibliometric studies reported in the published literature. The present study will add value to the bibliometrics literature and provide publishing trends in spacecraft technology research. [ABSTRACT FROM AUTHOR]

The understanding of Corporate Governance (CG) excels both in organizational structures as well as in academic. A better understanding of this field establishes the objective of this study to identify if knowledge in Corporate Governance in Brazil is legitimized. To meet the aims of this study, there was a descriptive research with a quantitative approach, using the technique of data mining. Data analysis enabled us to identify that the works of the authors Ricardo Pereira Hall, Alexandre Di Miceli da Silveira, Rubens Famá and Richard Saito are legitimized. Of the ten researchers considered legitimate six are international. The search identified 193 articles written by 359 authors, with a distribution close to the Lotka's Law, which makes it possible to identify a small group of authors with many publications. It was found that 55 magazines published articles focused on CG and position themselves as important instruments of legitimation of this scientific field when it comes to knowledge. [ABSTRACT FROM AUTHOR]

Service research in information systems (IS) has received attention over many years. This study probes into the development of service science, management, and engineering literatures through the perspective of bibliometrics under IS. Data were based on the science social citation index, from the Institute of Scientific Information Web of Science database. A total of 4,513 entries in a span of 22 years from 1991 to 2012 were collected. This paper implemented and classified service science, service management, and SE articles using the following publication type and language, characteristics of articles outputs, country, subject categories and journals, and the frequency of title-words and keywords used. Also, the paper performs the K-S test to check whether the distribution of author article production follows Lotka's law. Meanwhile, the analysis indicated the most relevant disciplines for SSME subject category provided by business economics, information science and library science, and computer science. [ABSTRACT FROM AUTHOR]

Closely following the analysis approach used for similar studies in the economics and finance literature, we present the first study to examine if there exists an empirical regularity in the bibliometric patterns of research productivity in the organizational behavior (OB) and human resource management (HRM) literature. Our results present strong evidence that there indeed exists a distinct empirical regularity. It is the so-called Generalized Lotka's Law of scientific productivity pattern: The number of authors publishing n papers is about 1/nc of those publishing one paper. The observed pattern in the OB and HRM area is interestingly very consistent with those in much older, related business disciplines. [ABSTRACT FROM AUTHOR]