Results 41 to 50 of about 7,369,874 (310)

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

Population Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Relation Between Stellar Mass and Star Formation Activity in Galaxies [PDF]

, 2008
For a mass-selected sample of 66544 galaxies with photometric redshifts from the Cosmic Evolution Survey (COSMOS), we examine the evolution of star formation activity as a function of stellar mass in galaxies. We estimate the cosmic star formation rates (
Abraham, Afonso, Andrew Hopkins, Bahram Mobasher, Baldry, Bolzonella, Calzetti, Calzetti, Capak, Capak, Caputi, Cram, Daddi, Dahlen, David B. Sanders, Dickinson, Ellison ., Eva Schinnerer, Flores, Giavalisco, Glazebrook, Gómez, Hopkins, Hopkins, Hopkins, Hopkins, Juneau, Kartik Sheth, Le Floc'h, Li, Mara Salvato, Mobasher, Nick Z. Scoville, Olivier Ilbert, Papovich, Peter Capak, R. Michael Rich, Salvato, Scarlata, Scoville, Scoville, Strolger, Sullivan, Taniguchi, Tomas Dahlen, Zheng   +45 more
core   +3 more sources

z-ideals in the Semiring ℛ^+(L_τ)

Scientific Annals of Computer Science
Let ℛ^+(L_τ) denote the nonnegative τ-real-continuous function on a topoframe L_τ. We introduce the notion of z-ideals and maximal ideals in the semiring ℛ^+(L_τ) and state some results about them. Also, we show that the topoframe L_τ is a P-topoframe if
Ali Akbar Estaji, Toktam Haghdadi
doaj   +1 more source

Partial sums and inclusion relations for analytic functions involving (p, q)-differential operator

Open Mathematics, 2021
Let fk(z)=z+∑n=2kanzn{f}_{k}\left(z)=z+{\sum }_{n=2}^{k}{a}_{n}{z}^{n} be the sequence of partial sums of the analytic function f(z)=z+∑n=2∞anznf\left(z)=z+{\sum }_{n=2}^{\infty }{a}_{n}{z}^{n}.
Tang Huo, Vijaya Kaliappan, Murugusundaramoorthy Gangadharan, Sivasubramanian Srikandan   +3 more
doaj   +1 more source

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

Approximation of subharmonic functions in the unit disk [PDF]

, 2008
Let u be a subharmonic function in D={|z|
Chyzhykov, Igor
core   +1 more source

$L_p$ compression, traveling salesmen, and stable walks

, 2009
We show that if $H$ is a group of polynomial growth whose growth rate is at least quadratic then the $L_p$ compression of the wreath product $\Z\bwr H$ equals $\max{\frac{1}{p},{1/2}}$. We also show that the $L_p$ compression of $\Z\bwr \Z$ equals $\max{\
Naor, Assaf, Peres, Yuval
core   +2 more sources

Meromorphic Functions Sharing a Small Function

Abstract and Applied Analysis, 2007
We will study meromorphic functions that share a small function, and prove the following result: let f(z) and g(z) be two transcendental meromorphic functions in the complex plane and let n≥11 be a positive integer. Assume that a(z)(≢0) is a common small
Songmin Wang, Zongsheng Gao
doaj   +1 more source

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

Population Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

The asymptotics of the generalised Bessel function [PDF]

, 2017
We demonstrate how the asymptotics for large |z| of the generalised Bessel function 0Ψ1(z) = X∞ n=0 z n Γ(an + b)n! , where a > −1 and b is any number (real or complex), may be obtained by exploiting the well-established asymptotic theory of the ...
Paris, R. B.
core