Results 171 to 180 of about 612 (197)

Lotka's law, price's urn, and electronic publishing

Journal of the American Society for Information Science, 1995
The thesis of this brief piece is that electronic publishing in its present and future Internet or Internet-like format is sufficiently different that electronic publishing will burgeon and that it will fundamentally change the nature of scholarly pubishing. Why ?
Michael Koenig, Toni Harrell
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Lotka's law: A testing procedure

Information Processing & Management, 1985
Abstract Instead of the commonly accepted inverse square law, Lotka's original formulation was based on a more general inverse power law: x n · y = c . The exponent and the constant must be estimated from the given set of author productivity data. A step-by-step outline is presented for testing the applicability of Lotka's law.
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Scientific Productivity, Lotka’s Law, and STEM Librarianship

Science & Technology Libraries, 2021
In this study, we examined the applicability of Lotka’s law by reviewing 590 STEM librarianship research articles published in seven journals between 2016 and 2019.
Clara Y. Tran, Selenay Aytac
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A new model that generates Lotka's law

Journal of the American Society for Information Science and Technology, 2001
AbstractIn this paper, we develop a new model for a process that generates Lotka's Law. We show that four relatively mild assumptions create a process that fits five different informetric distributions: rate of production, career duration, randomness, and Poisson distribution over time, as well as Lotka's Law.
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Lotka’s law for the Brazilian scientific output published in journals

Journal of Information Science, 2018
Lotka’s law is a power law for the frequency of scholarly publications. We show that Lotka’s law cannot be dismissed after considering a massive sample of the number of publications of Brazilian researchers in journals listed on the SCImago Journal Rank and the Journal Citation Reports. For the SCImago Journal Rank, we found a power law with the Pareto
Sergio Da Silva, Marcelo Perlin, Raul Matsushita, André Alves Portela Santos, Takeyoshi Imasato, Denis Borenstein   +5 more
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Application of lotka's law in current science journal

Journal of Information Management, 2020
Purpose: The purpose of the study is to examine the application of Lotka’s law in current science journals. Aim: To investigate the scientific productivity of authorship patterns in current science journals. To verify the Lotka’s law using general power method (n≠2) and inverse square method (n=2) and to analyse the frequency distribution of author’s ...
M. Thamaraiselvi, S. Lakshmi, M. Manthiramoorthi   +2 more
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Conservation laws for Lotka–Volterra models

Mathematical Methods in the Applied Sciences, 2003
AbstractWe derive necessary and sufficient conditions on a Lotka–Volterra model to admit a conservation law of Volterra's type. The result and the proof for the corresponding linear algebra problem are given in graph‐theoretical terms; they refer to the directed graph which is defined by the coefficients of the differential equation system. Copyright ©
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Analysis of Lotka's law: The Simon-Yule approach

Information Processing & Management, 1989
Abstract A major difficulty in using the well-known Lotka's law in information science is in the estimation of parameters. In this paper, we argue that the difficulty arises from the misuse of goodness-of-fit tests. As an alternative, we adopt Simon's five-step modeling process for the study of Lotka's law.
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The reflection of LOTKA's law in the structure of citations of a journal

Scientometrics, 1983
A complex structure measure for social groups was applied to the structure of citations in a journal. The citation structure reflected LOTKA's law on the various levels of group structure measure. On the first structure level the reciprocal effect of social and cognitive factors became discernible.
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Lotka's Law and Authorship Distribution in the Journal of ‘Columbia Law Review’

Collnet Journal of Scientometrics and Information Management, 2014
This paper examines the validity of Lotka's law to authorship distribution on the subject Area “LAW”. In the process, we chose to consider the articles published under Columbia Law Review (CLR) since from its inception i.e. during 1901–2012 for the study. Lotka's law constituting the most significant bibliometric law is applied and tested using various
Kiran Savanur, S. Gayathri Devi, P. V. Konnur   +2 more
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