Results 21 to 30 of about 129 (110)

Warming undermines emergence success in a threatened alpine stonefly: A multi‐trait perspective on vulnerability to climate change

open access: yesFunctional Ecology, Volume 37, Issue 4, Page 1033-1043, April 2023., 2023
Read the free Plain Language Summary for this article on the Journal blog. Abstract Vulnerability to warming is often assessed using short‐term metrics such as the critical thermal maximum (CTMAX), which represents an organism's ability to survive extreme heat. However, the long‐term effects of sub‐lethal warming are an essential link to fitness in the
Alisha A. Shah   +8 more
wiley   +1 more source

The Existence Problems of Solutions for a Class of Differential Variational–Hemivariational Inequality Problems

open access: yesMathematics, 2023
In this work, we used reflexive Banach spaces to study the differential variational—hemivariational inequality problems with constraints. We established a sequence of perturbed differential variational–hemivariational inequality problems with perturbed ...
Shih-Sen Chang   +4 more
doaj   +1 more source

On the cross‐validation bias due to unsupervised preprocessing

open access: yesJournal of the Royal Statistical Society: Series B (Statistical Methodology), Volume 84, Issue 4, Page 1474-1502, September 2022., 2022
Abstract Cross‐validation is the de facto standard for predictive model evaluation and selection. In proper use, it provides an unbiased estimate of a model's predictive performance. However, data sets often undergo various forms of data‐dependent preprocessing, such as mean‐centring, rescaling, dimensionality reduction and outlier removal. It is often
Amit Moscovich, Saharon Rosset
wiley   +1 more source

Functional traits and foraging behaviour: Avian vampire fly larvae change the beak and fitness of their Darwin's finch hosts

open access: yesFunctional Ecology, Volume 36, Issue 7, Page 1806-1817, July 2022., 2022
Read the free Plain Language Summary for this article on the Journal blog. Abstract The avian beak is a key morphological trait used for foraging. If parasites alter beak shape, we may expect changes in host foraging behaviour. Larvae of the avian vampire fly Philornis downsi cause naris enlargement in Darwin's finch nestlings when first and second ...
Sonia Kleindorfer   +8 more
wiley   +1 more source

Human‐mediated eco‐evolutionary processes of the herbivorous insect Hyalopterus arundiniformis during the Holocene

open access: yesDiversity and Distributions, Volume 28, Issue 6, Page 1313-1326, June 2022., 2022
Abstract Aim Pleistocene climatic fluctuations have been identified as a dominant factor in evolutionary and ecological processes underlying contemporary species distribution. In contrast, anthropogenic activity during the Holocene has been largely neglected in phylogeographic inference.
Tongyi Liu   +4 more
wiley   +1 more source

Uniform Convexity and Convergence of a Sequence of Sets in a Complete Geodesic Space

open access: yesAbstract and Applied Analysis, Volume 2022, Issue 1, 2022., 2022
In this paper, we first introduce two new notions of uniform convexity on a geodesic space, and we prove their properties. Moreover, we reintroduce a concept of the set‐convergence in complete geodesic spaces, and we prove a relation between the metric projections and the convergence of a sequence of sets.
Yasunori Kimura   +2 more
wiley   +1 more source

Graph‐like spaces approximated by discrete graphs and applications

open access: yesMathematische Nachrichten, Volume 294, Issue 11, Page 2237-2278, November 2021., 2021
Abstract We define a distance between energy forms on a graph‐like metric measure space and on a suitable discrete weighted graph using the concept of quasi‐unitary equivalence. We apply this result to metric graphs, graph‐like manifolds (e.g. a small neighbourhood of an embedded metric graph) or pcf self‐similar fractals as metric measure spaces with ...
Olaf Post, Jan Simmer
wiley   +1 more source

On Mosco convergence of convex sets [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1988
We present a natural topology compatible with the Mosco convergence of sequences of closed convex sets in a reflexive space, and characterise the topology in terms of the continuity of the distance between convex sets and fixed weakly compact ones. When the space is separable, the topology is Polish.
openaire   +1 more source

Convergence theorems for Banach space valued integrable multifunctions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1987
In this work we generalize a result of Kato on the pointwise behavior of a weakly convergent sequence in the Lebesgue-Bochner spaces LXP(Ω) (1≤p≤∞). Then we use that result to prove Fatou's type lemmata and dominated convergence theorems for the Aumann ...
Nikolaos S. Papageorgiou
doaj   +1 more source

On the continuity of the vector valued and set valued conditional expectations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1989
In this paper we study the dependence of the vector valued conditional expectation (for both single valued and set valued random variables), on the σ–field and random variable that determine it. So we prove that it is continuous for the L1(X) convergence
Nikolaos S. Papageorgiou
doaj   +1 more source

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