Results 51 to 60 of about 421 (111)
The Role of Leaf Wettability and Morphology on Leaf Surface Water Storage: A Cross‐Biome Synthesis
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
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
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]
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
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
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
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
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]
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
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

