Results 51 to 60 of about 7,369,874 (310)

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

open access: yesPopulation Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

On the Potts model partition function in an external field

open access: yes, 2012
We study the partition function of Potts model in an external (magnetic) field, and its connections with the zero-field Potts model partition function. Using a deletion-contraction formulation for the partition function Z for this model, we show that it ...
A.D. Sokal   +38 more
core   +2 more sources

Meromorphic Solutions of Some Complex Difference Equations

open access: yesAdvances in Difference Equations, 2009
The main purpose of this paper is to present the properties of the meromorphic solutions of complex difference equations of the form ∑{J}αJ(z)(∏j∈Jf(z+cj))=R(z,f(z)), where {J} is a collection of all subsets of {1,2,…,n}
Zhi-Bo Huang, Zong-Xuan Chen
doaj   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

open access: yesPopulation Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva   +6 more
wiley   +1 more source

Composition of entire function and analytic functions in the unit ball with a vanished gradient

open access: yesМатематичні Студії
The composition $H(z)=f(\Phi(z))$ is studied, where $f$ is an entire function of a single complex variable and $\Phi$ is an analytic function in the $n$-dimensional unit ball with a vanished gradient. We found conditions by the function $\Phi$ providing
A. I. Bandura, T. M. Salo, O. B. Skaskiv
doaj   +1 more source

A note on the value distribution of $\phi f^2 f^{(k)}-1$

open access: yesМатематичні Студії, 2021
In this paper, we study the value distribution of the differential polynomial $\varphi f^2f^{(k)}-1$, where $f(z)$ is a transcendental meromorphic function, $\varphi (z)\;(\not\equiv 0)$ is a small function of $f(z)$ and $k\;(\geq 2)$ is a positive ...
P. Sahoo, G. Biswas
doaj   +1 more source

Julia set of the function $z\exp(z+\mu)$

open access: yesTohoku Mathematical Journal, 1992
The author shows that there is a certain \(\alpha> 2\) such that for all \(\mu\in (-\infty,2)\cup (2,\alpha)\) the function \(f_ \mu\): \(z\to z \exp(z+\mu)\) has a Julia set which is not the whole complex plane. He also shows that there is a sequence \(\mu_ n\) such that \(2< \mu_ n< \mu_{n+1}\) and the Julia set of \(f_{\mu_ n}\) is the whole complex
openaire   +2 more sources

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

open access: yesPopulation Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa   +2 more
wiley   +1 more source

On Z*-open, Z*-closed functions

open access: yesKuwait Journal of Science, 2014
The aim of this paper is this paper is to introduce Z*-open, Z*-closed, pre-Z*-open and pre-Z*-closed functions and investigate properties and characterizations of these new types of functions. 
MOHAMMAD AL-JUHANI, ALI MUBARKI
doaj  

The Elliptic Gamma Function and SL(3, Z)⋉Z3 [PDF]

open access: yesAdvances in Mathematics, 2000
27 pages, LaTeX References added, minor ...
Giovanni Felder, Alexander Varchenko
openaire   +3 more sources

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