Zobrazeno 1 - 10
of 6 646
pro vyhledávání: '"Brewster, P."'
We show by an explicit example that the Garsia--Remmel $q$-rook numbers of Ferrers boards do not all have unimodal sequences of coefficients. This resolves in the negative a question from 1986 by the aforementioned authors.
Comment: 6 pages
Comment: 6 pages
Externí odkaz:
http://arxiv.org/abs/2410.19714
Autor:
Borgstedt, Jacqueline, Macdonald, Shaun, Marky, Karola, Pollick, Frank E., Brewster, Stephen A.
Physical interactions with socially assistive robots (SARs) positively affect user wellbeing. However, haptic experiences when touching a SAR are typically limited to perceiving the robot's movements or shell texture, while other modalities that coul
Externí odkaz:
http://arxiv.org/abs/2410.07892
Autor:
Lewis, Joel Brewster
We give analogues in the finite general linear group of two elementary results concerning long cycles and transpositions in the symmetric group: first, that the long cycles are precisely the elements whose minimum-length factorizations into transposi
Externí odkaz:
http://arxiv.org/abs/2407.20347
Autor:
Nyarko-Agyei, Albert, Moser, Scott, Seymour, Rowland G, Brewster, Ben, Li, Sabrina, Weir, Esther, Landman, Todd, Wyman, Emily, Torres, Christine Belle, Fell, Imogen, Boyd, Doreen
Effective policy and intervention strategies to combat human trafficking for child sexual exploitation material (CSEM) production require accurate prevalence estimates. Traditional Network Scale Up Method (NSUM) models often necessitate standalone su
Externí odkaz:
http://arxiv.org/abs/2407.13267
Given a graph $G=(V,E)$ of diameter $d$, a broadcast is a function $f:V(G) \to \{ 0, 1, \dots, d \}$ where $f(v)$ is at most the eccentricity of $v$. A vertex $v$ is broadcasting if $f(v)>0$ and a vertex $u$ hears $v$ if $d(u,v) \leq f(v)$. A broadca
Externí odkaz:
http://arxiv.org/abs/2406.05825
Autor:
Saha, Ambarneil, Mecklenburg, Matthew, Pattison, Alexander J., Brewster, Aaron S., Rodriguez, Jose A., Ercius, Peter
Every electron crystallography experiment is fundamentally limited by radiation damage. Nevertheless, little is known about the onset and progression of radiolysis in beam-sensitive molecular crystals. Here we apply ambient-temperature scanning nanob
Externí odkaz:
http://arxiv.org/abs/2404.18011
Previous work has shown that the disarray (or displacement) of an (affine) (signed) permutation is bounded in terms of its Coxeter length. Here, we characterize the permutations for which the bound is sharp in two ways: in terms of a natural property
Externí odkaz:
http://arxiv.org/abs/2404.06379
Autor:
Lewis, Joel Brewster, Wang, Jiayuan
In a finite real reflection group, the reflection length of each element is equal to the codimension of its fixed space, and the two coincident functions determine a partial order structure called the absolute order. In complex reflection groups, the
Externí odkaz:
http://arxiv.org/abs/2310.12265
Autor:
J. Cook, C. Brewster, F. Hayes, N. Booth, S. Bland, P. Pande, S. Thankappan, H. Pleijel, L. Emberson
Publikováno v:
Biogeosciences, Vol 21, Pp 4809-4835 (2024)
Ozone (O3) air pollution is well known to adversely affect both the grain and protein yield of wheat, an important staple crop. This study aims to identify and model the key plant processes influencing the effect of O3 on wheat protein. The DO3SE-Cro
Externí odkaz:
https://doaj.org/article/84b35d6175bd41af854f193c06d6a5ea
Autor:
Jonathan D. Dabbs, Caleb C. Taylor, Martin S. Holdren, Sarah E. Brewster, Brian T. Quillin, Alvin Q. Meng, Diane A. Dickie, Brooks H. Pate, W. Dean Harman
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-11 (2024)
Abstract Methods are lacking that can prepare deuterium-enriched building blocks, in the full range of deuterium substitution patterns at the isotopic purity levels demanded by pharmaceutical use. To that end, this work explores the regio- and stereo
Externí odkaz:
https://doaj.org/article/6aee4dd52ccd4cae9034cc315e429923