Results 111 to 120 of about 56,399 (238)
A matrix generalization of a theorem of Fine
, 2018 In 1947 Nathan Fine gave a beautiful product for the number of binomial coefficients $\binom{n}{m}$, for $m$ in the range $0 \leq m \leq n$, that are not divisible by $p$.
Rowland, Eric
core
Estimating the ecological drivers of insect abundance when detection is imperfect
Journal of Animal Ecology, EarlyView.Using a field‐based mark–recapture approach, the authors demonstrate that habitat quality can simultaneously influence insect abundance and detection. Simulation also showed that prioritizing increased sampling intensity over adding more study sites can improve accuracy of standard modelling approaches including GLMs or GLMMs, which do not account for ...
Jens Ulrich, Risa D. Sargent
wiley +1 more source
Seasonal body mass dynamics mediate life‐history trade‐offs in a hibernating mammal
Journal of Animal Ecology, EarlyView.We tested a suite of ecological hypotheses to explain variation in seasonal body mass dynamics of a fat‐storing mammalian hibernator. We further demonstrated that pre‐hibernation mass gain in ground squirrels mediates an annual allocation trade‐off between current and future reproduction as the squirrels forage and rear young under predation risk ...
Austin Z. T. Allison +4 more
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Bell polynomials and binomial type sequences
Discrete Mathematics, 2008 AbstractThis paper concerns the study of the Bell polynomials and the binomial type sequences. We mainly establish some relations tied to these important concepts. Furthermore, these obtained results are exploited to deduce some interesting relations concerning the Bell polynomials which enable us to obtain some new identities for the Bell polynomials.
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Binomial convolution and transformations of Appell polynomials
Journal of Mathematical Analysis and Applications, 2017 Abstract We show that the set A of Appell sequences is an abelian group under the binomial convolution. This is essentially equivalent to other approaches considered in the literature, in particular, the determinantal approach. We also define a scale transformation T α : A → A , which is an isomorphism, and a transformation
Alberto Lekuona, José A. Adell
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Uncertainty in blacklisting potential Pacific plant invaders using species distribution models
Journal of Applied Ecology, EarlyView.SDMs can provide valuable support for planning the preventive management of alien species. However, our findings show that blacklist outcomes are highly sensitive to modelling decisions. While ensemble modelling across multiple algorithms is a recommended best practice, our results reinforce the importance of incorporating global occurrence data when ...
Valén Holle +8 more
wiley +1 more source
Health Services Research, EarlyView.ABSTRACT Objective To estimate changes in lung cancer screening at age 65, the age of nearly universal Medicare coverage. Study Setting and Design Screening reduces lung cancer mortality but is underutilized. We used a regression discontinuity design to measure the impact of nearly universal Medicare coverage at age 65 on first‐time receipt of ...
Marcelo C. Perraillon +4 more
wiley +1 more source
Moduli space of filtered λ-ringstructures over a filtered ring
International Journal of Mathematics and Mathematical Sciences, 2004 Motivated in part by recent works on the genus of classifying spaces of compact Lie groups, here we study the set of filtered λ-ring structures over a filtered ring from a purely algebraic point of view. From a global perspective, we first show that this
Donald Yau
doaj +1 more source
Two identities in the theory of polynomials of binomial type
Journal of Mathematical Analysis and Applications, 1987 The author proves a very general version of Abel's binomial formula. The basic reference for what follows is \textit{G.-C. Rota}, \textit{D. Kahaner} and \textit{A. Odlyzko} [J. Math. Anal. Appl. 42, 684-760 (1973; Zbl 0267.05004)]. Let \(\lambda_ 1,...,\lambda_ n\), \(x_ 1,...,x_ n\) be real numbers, \(\lambda (T)=\sum_{i\in T}\lambda_ i\), \(\lambda (
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Animal Conservation, EarlyView.Identifying the most effective criterion to assess the conservation status of vulnerable species in threatened tropical regions is crucial to evaluate recovery plans. We investigated the influence of environmental heterogeneity on the extent of occurrence (EOO), area of occupied habitat (AOH), and density variation of two Amazonian riparian frog ...
Rafael F. Jorge +3 more
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