Results 51 to 60 of about 421 (111)

The Role of Leaf Wettability and Morphology on Leaf Surface Water Storage: A Cross‐Biome Synthesis

open access: yesEcohydrology, Volume 19, Issue 1, January‐February 2026.
ABSTRACT The presence of water on leaves impacts plant function and ecosystem fluxes by supplementing moisture, reducing evapotranspirational demand and encouraging pathogen spread. Maximum phytoelement water storage capacity (MWSC)—the maximum amount of water that can be held on the surface of the leaf‐ is an important but poorly constrained parameter
Ashley J. Cao   +3 more
wiley   +1 more source

Restricted ascent sequences and Catalan numbers

open access: yes, 2014
Ascent sequences are those consisting of non-negative integers in which the size of each letter is restricted by the number of ascents preceding it and have been shown to be equinumerous with the (2+2)-free posets of the same size.
Callan, David   +2 more
core   +1 more source

New Media Ecologies, Old Occupational Subjectivities and Practices: Tensions and Contradictions in Online Crowdfunding for the Arts in the Netherlands

open access: yesAmerican Anthropologist, Volume 127, Issue 4, Page 796-806, December 2025.
ABSTRACT Many artists in Europe now turn to online crowdfunding to fund their creative practices against the backdrop of cuts in state‐funded subsidies for the arts. Based on an ethnographic analysis of online crowdfunding in the Netherlands, I suggest that this neoliberal context requires artists to cultivate occupational subjectivities and practices ...
Eitan Wilf
wiley   +1 more source

Block patterns in Stirling permutations [PDF]

open access: yes, 2014
We introduce and study a new notion of patterns in Stirling and $k$-Stirling permutations, which we call block patterns. We prove a general result which allows us to compute generating functions for the occurrences of various block patterns in terms of ...
Remmel, Jeffrey B.   +1 more
core  

Finite models for positive combinatorial and exponential algebra

open access: yesBulletin of the London Mathematical Society, Volume 57, Issue 11, Page 3380-3400, November 2025.
Abstract We use high girth, high chromatic number hypergraphs to show that there are finite models of the equational theory of the semiring of non‐negative integers whose equational theory has no finite axiomatisation, and show this also holds if factorial, fixed base exponentiation and operations for binomial coefficients are adjoined.
Tumadhir Alsulami, Marcel Jackson
wiley   +1 more source

Shape-Wilf-equivalences for vincular patterns

open access: yesAdvances in Applied Mathematics, 2013
We extend the notion of shape-Wilf-equivalence to vincular patterns (also known as "generalized patterns" or "dashed patterns"). First we introduce a stronger equivalence on patterns which we call filling-shape-Wilf-equivalence. When vincular patterns $ $ and $ $ are filling-shape-Wilf-equivalent, we prove that the direct sum $ \oplus $ is filling ...
openaire   +2 more sources

Is Genetic Differentiation Involved in the Morphological Adaptation of Adenophora triphylla var. japonica (Camanulaceae) to Water Flow Stress Along Rivers?

open access: yesEcology and Evolution, Volume 15, Issue 10, October 2025.
This study found that riverside populations of Adenophora triphylla have genetically fixed morphological traits—such as narrower leaves and thicker, shorter petioles and stems—that help resist water flow stress. These traits were maintained even under cultivation, suggesting adaptive evolution rather than mere plasticity.
Iori Yajima   +4 more
wiley   +1 more source

Classical and consecutive pattern avoidance in rooted forests

open access: yes, 2020
Following Anders and Archer, we say that an unordered rooted labeled forest avoids the pattern $\sigma\in\mathcal{S}_k$ if in each tree, each sequence of labels along the shortest path from the root to a vertex does not contain a subsequence with the ...
Garg, Swapnil, Peng, Alan
core  

Computational Approaches to Consecutive Pattern Avoidance in Permutations [PDF]

open access: yes, 2011
In recent years, there has been increasing interest in consecutive pattern avoidance in permutations. In this paper, we introduce two approaches to counting permutations that avoid a set of prescribed patterns consecutively.
Nakamura, Brian
core  

Spermatophyta Molecular Clock: Time Drift and Recent Acceleration

open access: yesPlant-Environment Interactions, Volume 6, Issue 5, October 2025.
Exponential increase in the base substitution rate in recent geologic time. ABSTRACT Angiospermae radiation is widely recognized as a mid‐Cretaceous event, but the adaptive radiation of Asarum and Viola as spring ephemerals also occurred during the Quaternary. To better understand the evolution of Angiospermae through geological time, a robust and well‐
Soichi Osozawa
wiley   +1 more source

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