Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Nathan Williams"'
Publikováno v:
European Journal of Case Reports in Internal Medicine (2024)
Ischaemic colitis is responsible for more than half of the presentations of gastrointestinal ischaemia and develops due to an interruption of intestinal blood flow. Risk factors include increasing age and conditions associated with decreased perfusio
Externí odkaz:
https://doaj.org/article/9c1fae1afcfa4d4b96595fefe8f6a7bf
Autor:
Shannon C. O’Brien, Lyndsey D. Cole, Bernadette A. Albanese, Allison Mahon, Vijaya Knight, Nathan Williams, Rachel Severson, Alexis Burakoff, Nisha B. Alden, Samuel R. Dominguez
Publikováno v:
Emerging Infectious Diseases, Vol 29, Iss 5, Pp 929-936 (2023)
To compare SARS-CoV-2 antibody seroprevalence among children with seropositive confirmed COVID-19 case counts (case ascertainment by molecular amplification) in Colorado, USA, we conducted a cross-sectional serosurvey during May–July 2021. For a co
Externí odkaz:
https://doaj.org/article/a60037d3e8cb40bfab4c46fa32137f7a
Publikováno v:
Environmental Research: Food Systems, Vol 1, Iss 2, p 025001 (2024)
In this study, we introduce an integrated modeling framework that combines a hydrologic model, a biophysical crop model, and a techno-economic model to assess solar irrigation potential in Sub-Saharan Africa (SSA) based on seven commonly grown food c
Externí odkaz:
https://doaj.org/article/5323a521a81945308f73cb17aa50d506
Autor:
Colin Defant, Nathan Williams
Publikováno v:
Forum of Mathematics, Sigma, Vol 11 (2023)
We introduce semidistrim lattices, a simultaneous generalization of semidistributive and trim lattices that preserves many of their common properties. We prove that the elements of a semidistrim lattice correspond to the independent sets in an associ
Externí odkaz:
https://doaj.org/article/614c4a96f9d642e482ca9e054fecf08f
Autor:
Megan Jepson, Nathan Williams, Terry P Haines, PIVC (Pandemic Information for Vulnerable Communities) Group
Publikováno v:
PLoS ONE, Vol 18, Iss 1, p e0280865 (2023)
Multiple approaches can be used to communicate public health messages through mass media. It is unclear which approaches are superior for meeting the needs of the general community along with vulnerable population subgroups. To compare different publ
Externí odkaz:
https://doaj.org/article/8080055bcef6490a8d04d0ee4599c658
Publikováno v:
Frontiers in Public Health, Vol 10 (2022)
Methods of communications and the nature of messaging are critically important in influencing public behavior. The COVID-19 pandemic has resulted in major disruptions to all aspects of life globally and has triggered multiple approaches of health mes
Externí odkaz:
https://doaj.org/article/da837e5ce96c474ca1879dfe260f7169
Autor:
Marko Thiel, Nathan Williams
Publikováno v:
Discrete Mathematics & Theoretical Computer Science, Vol DMTCS Proceedings, 28th... (2020)
Let gcd(a, b) = 1. J. Olsson and D. Stanton proved that the maximum number of boxes in a simultaneous (a, b)-core is (a2 −1)(b2 −1) 24, and showed that this maximum is achieved by a unique core. P. Johnson combined Ehrhart theory with the polynom
Externí odkaz:
https://doaj.org/article/73f5323bb1854f36858dc743cc17f3dc
Publikováno v:
Discrete Mathematics & Theoretical Computer Science, Vol DMTCS Proceedings, 28th... (2020)
The main objects of noncrossing Catalan combinatorics associated to a finite Coxeter system are noncross- ing partitions, sortable elements, and cluster complexes. The first and the third of these have known Fuss–Catalan generalizations. We provide
Externí odkaz:
https://doaj.org/article/e7ab0159a0934573b15b816bddc4d5f7
Publikováno v:
Environmental Research Letters, Vol 16, Iss 10, p 104048 (2021)
Agriculture contributes up to 50% of the gross domestic product in some East African countries and is the backbone of the region’s economy. Most farmers rely on traditional, small-scale subsistence farming with low fertilizer use and low-yield seed
Externí odkaz:
https://doaj.org/article/6ed3009e12a44b97a5c7572fe8e6a012
Autor:
Henri Mühle, Nathan Williams
Publikováno v:
Discrete Mathematics & Theoretical Computer Science, Vol DMTCS Proceedings, 27th..., Iss Proceedings (2015)
We present a generalization of the Tamari lattice to parabolic quotients of the symmetric group. More precisely, we generalize the notions of 231-avoiding permutations, noncrossing set partitions, and nonnesting set partitions to parabolic quotients,
Externí odkaz:
https://doaj.org/article/15f318ff4666448db7e953f5b590c974