A Bibliometric Study of Semiconductor Literature, 1978–1997

Semiconductor is the key element for information industry. The present study investigated the growth of semiconductor literature based on the database of INSPEC. Well-established bibliometric techniques, such as Bradford-Zipf's plot and Lotka's law have been employed to further explore the characteristics of semiconductor literature. Quantitative results on the literature growth, form of publication, research treatment, publishing country and language, author productivity and affiliate are reported. Moreover, from the Bradford-Zipf's plot, 25 core journals in semiconductor were identified and analyzed.     

Scientometric study of biochemical literature of Nigeria, 1970–1984: Application of Lotka's law and the 80/20-Rule

A bibliography of biochemical literature of Nigeria for the period, 1970–1984 containing a total of 500 items, was analysed to test the applicability of Lotka's law and 80/20-rule to the author productivity distribution patterns. Four different files were created out of the data on author productivity: one for the publication of all the authors, second for the publications by first authors only, third for single authors and fourth for the contributions of only coauthors. Lotka's law could apply in all the four cases with different values of . The Kolmogorov-Smirnov test was applied to test the applicability of Lotka's law at 0.01 level of significance. Egghe's theory and formula were used to test 80/20-rule and it was found that the rule did not apply to any of the four data sets.     

Power laws of research output. Evidence for journals of economics

In this paper we examine the validity of Lotka's law and Zipf'slaw for research output in 15 top journals of economics in the period 1977to 1997. Our data for individual authors satisfy a general form of Lotka'slaw. We find increasing competition over time among economists on the individuallevel. However, publications in top journals are concentrated heavily whenthe institutional level is under consideration. Research output of institutionscan be fit adequately by Zipf's law. This revised version was published online in June 2006 with corrections to the Cover Date.     

The main problems of studying literature aging

In this study an attempt to examine the dependence between the productivity of core journals and the shape of the distribution curve in the upper section is made. For this purpose, the impact of the core journal productivity increase over an extended time interval was investigated. As a referent point in relation to which the changes were followed, equalized inverse relationship between the core and periphery in terms of the number of journals and the number of papers published in them in a given subject field has been hypothesized. The degree to which a particular set of data conforms to that relationship expressed as , is taken as an indicator of the changes in the core/periphery relation. The applicability of Lotka's exponent in the journal productivity context is also discussed.     

A bibliometric analysis of productivity patterns of biomedical authors of Nigeria during 1967-2002

Summary Bibliographic data on biomedical literature of Nigeria drawn from articles listed in Medline covering the period 1967-2002, and numbering 6820 were analysed to study the pattern of productivity of various author categories using Lotka's law. The total of 2184 authors who wrote the papers was divided into four different files, namely all authors, first authors, non-collaborative authors and co-authors. We hypothesized that the productivity patterns of each of the categories of authors differed from Lotka's inverse power law. The results showed that only the co-author category differed from the inverse power version of the law, while the other categories did not, although they yielded various exponents.     

Authors’ sources of information: a new dimension in information scattering

The purpose of this study is to determine the usage patterns of core journals by scholars, and to address the differences among various academic disciplines. Thus, the references of 11,230 corresponding authors for the past 35?years from the world??s top five highly cited universities and institutions were analyzed. To build robust models of information scattering, we need a deeper understanding of this phenomenon. The results show that core journals usage is a social phenomenon, in exactly the same way as Bradford??s law, Zipf??s law and Lotka??s law. The analysis of author references shows that if core scientific journals are arranged in order of decreasing productivity, then they could be divided into a small group of highly cited periodicals and a large group of minimally cited ones. Scholars may do browsing and similar information-seeking activities to form their core journals, and the findings may support Bates??s hypothesis that Bradford??s core zone is best searched by browsing. Bradford??s law and relevant research may consequently help to solve many of the practical problems that practitioners of the profession face, particularly in collection development in libraries, and help users to gather highly scattered information.     

Lotka's law reconsidered: The evolution of publication and citation distributions in scientific fields

This paper reports early steps in research that seeks to clarify how publications of scientists interact dynamically with citations and reputation in shaping the evolution of scientific fields. We assume that Lotka's modified law holds for scientific fields. A primary approach to model publication productivity was published by Yablonsky. In contrast to Yablonsky's unfinished mathematical approach, our simulation approach is not predominantly driven by insight into the formal generation mechanisms of certain processes but more theory driven. It considers the evolution of publication and citation distributions over the histories of scientific fields using both simulated and real historical data.     

Information management or knowledge management? An informetric view of the dynamics of Academia

This study analyzes the similarities and differences of performance of information management (IM) and knowledge management (KM) research publication indexed by the SCI-EXPANDED, SSCI and A&HCI databases since 1994 with informetric methods in order to explore a developing tendency in the near future. The bibliographic search supplied 1199 IM and 1063 KM records. A very few of IM and KM authors contributed two or more articles. Four countries dominated global IM and KM research productivity, while a few institutions played remarkable roles in scholarly activity. IM journals distributed widespread and 84 per cent just published one or two articles; KM publications were rather concentrated to core and borderline periodicals, fitting Bradford's law of scattering and. The result of Pearson's correlation coefficients analysis indicates that the higher the journal impact factor, the more times the published article is cited. The author concludes that KM has been leading IM in both publication productivity and academic population and the tendency is overwhelmingly growing. This revised version was published online in June 2006 with corrections to the Cover Date.     

Bradford's Law in the Context of Information Provision

The aim of the study is to study empirical use of Bradford's law for decisions concerning information systems in problem based fields, were journals from different disciplines cover relevant information. Results of comparison of the cores in different fields can be used as a base for tailoring an information system. Bradford's law is in the study applied on five databases in the topic "Information retrieval and seeking" in order to compare the size and titles of the core journals. These databases give different views of the same interdisciplinary topic. Problems are relevance judgments, which change the shape of the graphs, and consistency of concepts in the analysis. The results show that Bradford analyses can be useful tools in developing information systems.     

Identification of information sources and citation patterns in the field of reciprocating internal combustion engines

Processes and technology of reciprocating internal combustion engines (ICE) constitute a research field whose characteristics regarding information production and diffusion are determined by multidisciplinarity, the existence of pseudo-technical literature and the influence of confidentiality on the presentation of research outputs. The objective of this study is to provide a quantitative and objective basis for the evaluation of research in this field. This has been accomplished by identifying the most productive journals and the most cited sources, using the SCI and citation analysis. From this analysis, core journals have been identified, showing that their importance in this research area does not correlate with their impact factor. Moreover, conference proceedings (particularly those published by the Society of Automotive Engineers) are shown to be the most important information source in this field. This revised version was published online in June 2006 with corrections to the Cover Date.     

Econometric analysis of biomedical research publishing patterns

An econometric-type model was developed that describes the relationship between federal biomedical funding and the number, subject area and research level (clinical to basic) of published papers in biomedical journals. The study covered federal biomedical funding over the period 1962–1979 and biomedical literature counts over the period 1965–1979. A unique feature of the model was the explicit incorporation of the citation-based interrelationships among the various subfields and research levels of biomedicine.Publication counts in a particular subject area were modeled as a function of federal funding to the area and publication activity in related subject areas. In general, publication activity in related subject areas was found to be a significant explanatory variable over and above funding alone. Moreover, clinically oriented subject areas most often had publication counts in related basic research areas as explanatory variables.     

Patents: A unique source for scientific technical information in chemistry related industry?

A study was done to find the source of first publication and the number of non-patent publications from those whose first publication is in patent literature. Patent information is not always used as source for scientific technical information; however information disclosed in patents does not always appear in non-patent literature later. The latest studies published on the uniqueness of information disclosed in patents were Liebesny [Liebesny F et al. The scientific and technical information contained in patent specifications. The extent and time factors of its publication in other forms of literature. Inform Scientist 1974;8(4):165–77 [Reprint]] and Terapane [Terapane JF. A unique source of information. Chemtech 1978;8:272–76]. This study was undertaken to have current data on what we are missing when patent information is not used in the area of chemistry information. Looking at a sample of substance information reported in both patent and journal literature represented in the CAS databases suggests that a significant amount of this information does appear in patents before it is reported elsewhere; in some cases the disclosure in patents may truly be the only report.     

多感官设计的可视化分析:研究进展、热点与趋势

目的 对国内多感官设计的相关文献进行总结分析,探寻该领域的研究现状、热点与发展趋势,为今后多感官设计理论及实践研究提供参考。方法 基于文献计量分析法,以2005-2021年知网、万方、维普、超星及华艺数据库收录的741篇多感官设计文献为分析对象,采用CiteSpace、NoteExperss等软件对该领域文献的发表时间、载文期刊、高被引文献、作者、机构、     

基于CNKI源的人因可靠性文献计量学分析

为了客观反映与评价国内人因可靠性研究现状与发展趋势,采用文献计量学分析方法,并以CNKI数据库为数据源,对2006-2016国内人因可靠性领域文献进行分析与评价。采用年份、学科、载文期刊、研究机构、基金资助、文献传播与扩散、关键词等进行分析评述。结果表明:近十年国内该领域文献总体数量呈增加趋势;该学科发展呈现出多学科相互交叉的特点;根据布拉德福文献离散定律,确定期刊分布的核心区域;利用Citespace软件对关键词进行分析,得出人因可靠性分析方法是当前的研究热点。     

Bibliometric analysis of the journal literature on women’s studies

This study uses bibliometric techniques to investigate the characteristics and implications of women’s studies literature over the period from 1900 to 2013. Using computer analysis for bibliometric techniques, the results of the present study demonstrate that the journal literature on women’s studies has grown exponentially, with an annual growth rate of 10.6% for over one century. Most of the document types in the area of women’s studies are in the form of research articles, review articles and book reviews. The United States of America and the United Kingdom contribute the largest number of articles. One hundred and seventeen core journals containing 33% of the women’s studies journal articles have been identified through the application of Bradford’s law on journal distribution. More than half of the 117 core journals began publishing from 1970 to 1990, and most of these core journals deal with the humanities (including literature, history and philosophy), women’s studies, medical science, psychology, political science and sociology. The highly productive journals associated with highly cited times are Signs: Journal of Women in Culture and Society, Women’s Studies International Forum, Sex Roles, Feminism and Psychology, Gender and Society, European Journal of Women’s Studies, American Historical Review, Psychology of Women Quarterly and Feminist Studies.     

Productivity differences fields of learning,and Lotka's law

The paper examines whether productivity differences among individual researchers are larger in some fields of learning than in others. Productivity patterns in the natural sciences, the medical sciences, the social sciences, and the humanities are compared by the use of unweighted and weighted publication counts. Irrespective of whether total number of publications or a refined indicator taking account of type of publication and multiple authorship are used, there are no essential differences in publishing inequality between the various fields. About 20% of the tenured faculty at Norwegian universities produce 50% of the total output, and the most prolific half of the researchers account for almost 85% of the output. The results are discussed in relation to Lotka's law.     

Citedness and uncitedness of cancer articles

There is a rapid growth of cancer literature. Thousands of papers are being regularly published every year not only in speciality journals, but also in journals of other disciplines. Citation studies are nowadays considered a major basis of science indicators for ascertaining the importance of a scientific journal and that of the published articles on a particular subject. In oncological research the journalCancer is considered as one of the top most journals and is universally well known for its high standard and excellence. In this paper an attempt has been made to find out the importance of all the articles published in it for a particular year. Side by side bibliometric analysis was made to ascertain various other aspects like time lag between publication and first citation of articles, average citation time, subject scattering and identification of most important journals in the field etc. It is believed that this study would be of help to the working oncologists, librarians and information scientists to assess the importance of articles published in a top ranking journal of cancer and also that of different journals publishing oncological research results.     

Bibliometric study of world literature on patents

Some bibiliometric characteristics of the literature on patents have been studied. The period considered is 1900 to 1980. Data have been analysed into the types of publications, i.e.books, conference proceedings, reports, journals, etc. and grouped under four broad categories. Language-wise distribution of the publication data has been done to find out the pattern of distribution in different languages. Journal-wise distribution of articles has been studied to find out the pattern of authorship as well as the most prolific authors. The growth of the literature on patents was found exponential in nature. It follows Bradford's law, with the ‘core’ comprising nine journals containing 33% of the literature.     

Publication activity in complementary and alternative medicine

In this article we analyse how research on complementary and alternative medicine (CAM) break through into one established scientific arena, namely academic journals. With help from bibliometric methods we analyse publication of CAM articles, in the Medline database, during the period 1966–2007. We also analyse the general content of the articles and in what journals they get published. We conclude that the publication activity of CAM articles increases rapidly, especially in the late 1990s, and that the changing growth rate is not due to the general expansion of Medline. The character of CAM articles has changed towards more clinical oriented research, especially in subfields such as acupuncture and musculoskeletal manipulations. CAM articles are found both in core clinical journals and in specialized CAM journals. Even though a substantial part of the articles are published in CAM journals, we conclude that the increasing publication activity is not restricted to the expansion of these specialized journals.     

Lotka's law and productivity patterns of entomological research in Nigeria for the period, 1900–1973

A bibliography of entomological research in Nigeria, 1900–1973 totally 1720 publications was analysed to study the author productivity patterns and to test the applicability of Lotka's law for the obtained distributions. Four different files were generated, one for the publications of all the authors, second for the publications by first authors, third for single authors and fourth for coauthors. Lotka's law in its original form as inverse square law does not apply to any of the four data sets. However, it does apply in its generalised form with the calculated values of characteristic exponent . The values of were found to be 1.9, 1.8, 2.2 and 2.4 for the four different data sets. K-S statistical test was aplied to test the applicability of generalised form of Lotka's law. The maximum difference in the observed and estimated values of the proportions of authors was found to be highly insignificant at 0.01 level of significance in each of the four cases.