Results 11 to 20 of about 58,733,197 (123)
La ley de Lotka y la literatura de bibliometría
Investigación Bibliotecológica: archivonomía, bibliotecología e información, 1999 LA LEY DE LOTKA ES SIMPLEMENTE LA DESCRIPCIÓN DE UNA RELACIÓN CUANTITATIVA ENTRE LOS AUTORES Y LOS ARTÍCULOS PRODUCIDOS EN UN CAMPO DADO Y EN UN PERIODO DE TIEMPO. LA LEY DE MUESTRA QUE EXISTE UNA DISTRIBUCIÓN DESIGUAL EN TANTO QUE LA MAYORÍA DE LOS ARTÍCULOS ESTÁN CON CENTRADOS EN UNA PEQUEÑA PORCIÓN DE AUTORES ALTAMENTE PRODUCTIVOS, Y UNA RELACIÓN ...
RUBÉN URBIZAGASTEGUI
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La colaboración de los autores en la literatura producida sobre la Ley de Lotka [PDF]
Ciência da Informação, 2012 Analiza la colaboración de los autores en la literatura publicada desde 1922 hasta junio del 2010 sobre la “Ley de Lotka”. Fueron identificadas 651 documentos producidos por 728 autores diferentes.
Ruben Alvarado Urbizagastegui
doaj +2 more sources
Competitive Lotka–Volterra population dynamics with jumps [PDF]
, 2011 This paper considers competitive Lotka–Volterra population dynamics with jumps. The contributions of this paper are as follows. (a) We show that a stochastic differential equation (SDE) with jumps associated with the model has a unique global positive ...
Yuan, Chenggui +3 more
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Population dynamical behavior of non-autonomous Lotka-Volterra competitive system with random perturbation [PDF]
, 2009 In this paper, we consider a non-autonomous stochastic Lotka-Volterra competitive system dxi(t) = xi(t)[(bi(t)¡ nPj=1aij (t)xj (t))dt+¾i(t)dBi(t)], where Bi(t) (i = 1; 2; ¢ ¢ ¢ ; n) are independent standard Brownian motions. Some dynamical properties are
Key Laboratory for Applied Statistics of MOE (KLAS) (Funder) +4 more
core +4 more sources
Información, Cultura y Sociedad, 2021 Este artículo analiza la producción científica sobre ALFIN (2001-2020) en las áreas de Bibliotecología y Ciencias de la Información. A partir de Latindex, se identificaron todas las revistas de ByCI.
Jesús Alberto Rivas Villena +3 more
doaj +1 more source
Population dynamical behavior of Lotka-Volterra system under regime switching [PDF]
, 2009 In this paper, we investigate a Lotka-Volterra system under regime switching dx(t) = diag(x1(t); : : : ; xn(t))[(b(r(t)) + A(r(t))x(t))dt + (r(t))dB(t)]; where B(t) is a standard Brownian motion.
Li, Xiaoyue +4 more
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African Journal of Ecology, Volume 61, Issue 4, Page 768-780, December 2023., 2023 Abstract Anecdotal evidence suggests that there is interspecific competition between black‐backed jackal (Canis mesomelas) and caracal (Caracal caracal) on farmland in South Africa. Home range data were used across both years (1983–2016) and provinces, as well as polynomial interpolation, to quantitatively assess changes in the population of caracal ...
D. J. Crookes
wiley +1 more source
AS ESTRATÉGIAS DE INTERNACIONALIZAÇÃO: UM ESTUDO BIBLIOMÉTRICO APLICANDO AS LEIS DE LOTKA, BRADFORD E ZIPF NA BASE SPELL NO PERÍODO DE 2008 A 2018 [PDF]
Revista de Administração, Contabilidade e Economia da Fundace, 2020 A pesquisa analisa as producoes cientificas na area de Negocios Internacionais sobre o tema estrategias de internacionalizacao na plataforma SPELL por meio da aplicabilidade de analises bibliometricas mediante as Leis de Lotka, Leis de Bradford e Lei de Zipf. O estudo teve como amostra 110 artigos publicados no periodo de 2008 a 2018.
Raul Gomes Pinheiro +1 more
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Ecosphere, Volume 14, Issue 9, September 2023., 2023 Abstract Feral horse (Equus caballus) population management is a challenging problem around the world because populations often exhibit density‐independent growth, can exert negative ecological effects on ecosystems, and require great cost to be managed.
Brian Folt +4 more
wiley +1 more source
Modeling the herd prey response to individualistic predators attacks
Mathematical Methods in the Applied Sciences, Volume 46, Issue 12, Page 13436-13456, August 2023., 2023 In this paper, we consider predators hunting on prey gathered in groups and in such way exhibiting the possibility of reducing the predators pressure. To model this feature, however, we depart from the Holling type II (HTII) response function, in that we assume that a sufficiently large set of prey could respond to individualistic attacks and therefore
Francesca Acotto, Ezio Venturino
wiley +1 more source