Results 41 to 50 of about 610,827 (332)

Finite rigid sets in curve complexes

open access: yes, 2012
We prove that curve complexes of surfaces are finitely rigid: for every orientable surface S of finite topological type, we identify a finite subcomplex X of the curve complex C(S) such that every locally injective simplicial map from X into C(S) is the ...
Aramayona, Javier   +1 more
core   +1 more source

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

open access: yesPopulation Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source

Molecular Mapping of Restriction-Site Associated DNA Markers In Allotetraploid Upland Cotton.

open access: yesPLoS ONE, 2015
Upland cotton (Gossypium hirsutum L., 2n = 52, AADD) is an allotetraploid, therefore the discovery of single nucleotide polymorphism (SNP) markers is difficult. The recent emergence of genome complexity reduction technologies based on the next-generation
Yangkun Wang   +8 more
doaj   +1 more source

Finite Time Adaptive Neural Dynamic Surface Control of Nonstrict Feedback Nonlinear Systems Including Dead-Zone and Full State Restrictions

open access: yesIEEE Access, 2020
In this paper, finite time adaptive neural network (NN) tracking control is investigated for a class of uncertain nonstrict feedback systems with unknown dead-zone and unmodeled dynamics as well as full state restrictions.
Ziwen Wu, Tianping Zhang
doaj   +1 more source

A Garden of Eden theorem for Anosov diffeomorphisms on tori

open access: yes, 2016
Let $f$ be an Anosov diffeomorphism of the $n$-dimensional torus ${\mathbb{T}}^n$ and $\tau$ a continuous self-mapping of ${\mathbb{T}}^n$ commuting with $f$.
Ceccherini-Silberstein, Tullio   +1 more
core   +1 more source

An Adaptive Management Model for Brown Bears in Hokkaido: Based on Total Population and the Number of Nuisance Bears

open access: yesPopulation Ecology, EarlyView.
Bear management changes management actions according to the horizontal axis of the population size and the vertical axis of the number of nuisance bears. Aiming for the target population size of Ntar, Actions I and II protect the bears, and Action IV reduces the population.
Hiroyuki Matsuda   +5 more
wiley   +1 more source

Signal-based optical map alignment.

open access: yesPLoS ONE, 2021
In genomics, optical mapping technology provides long-range contiguity information to improve genome sequence assemblies and detect structural variation.
Mehmet Akdel   +6 more
doaj   +1 more source

On the restriction of the Fourier transform to polynomial curves [PDF]

open access: yes, 2007
We prove a Fourier restriction theorem on curves parametrised by the mapping P(t) = (P1(t),..., Pn(t)), where each of the P1,..., Pn is a real-valued polynomial and t belongs to an interval on which each of the P1,..., Pn "resembles" a ...
Dendrinos, S.
core  

Irreducible restrictions of closed mappings

open access: yesTopology and its Applications, 1998
By a result of \textit{N. Lashnev} [Sov. Math., Dokl. 6, 1504-1506 (1966); translation from Dokl. Akad. Nauk SSSR 165, 756-758 (1965; Zbl 0145.19603)], every continuous, closed surjection \(f:X\to Y\), with \(X\) paracompact and \(Y\) Fréchet, is inductively irreducible (i.e., there exists a closed \(X'\subset X\) such that \(f(X')=Y\) and \(f| X'\) is
openaire   +2 more sources

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

open access: yesPopulation Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi   +3 more
wiley   +1 more source

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