Results 81 to 90 of about 60,854 (281)
Structure Preserving Numerical Analysis of Reaction-Diffusion Models
Journal of Function Spaces, 2022 In this paper, we examine two structure preserving numerical finite difference methods for solving the various reaction-diffusion models in one dimension, appearing in chemistry and biology.
Nauman Ahmed +6 more
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Partition Regularity of Nonlinear Polynomials: a Nonstandard Approach
, 2013 In 2011, Neil Hindman proved that for every natural number $n,m$ the polynomial \begin{equation*} \sum_{i=1}^{n} x_{i}-\prod\limits_{j=1}^{m} y_{j} \end{equation*} has monochromatic solutions for every finite coloration of $\mathbb{N}$.
Baglini, Lorenzo Luperi
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Australian Journal of Social Issues, EarlyView.ABSTRACT Over almost two decades, young people's employment opportunities have been significantly impacted by events like the Global Financial Crisis (2008–2009) and the COVID‐19 pandemic (2020‐). Thus, underemployment has become a more pervasive and persistent feature of young people's labour market experiences. This research focuses on three forms of
Brendan Churchill
wiley +1 more source
Observations and nonstandard FRW models
The Astrophysical Journal, 1987 The observational predictions of various nonstandard cosmological models which have an FRW metric as their space-time geometry are investigated. The general numerical predictions of the models are found to be in accord with actual observations; in particular, they predict a current relative velocity of the Galaxy with respect to the CMB consistent with
openaire +1 more source
A novel mouse model simulating C5 palsy after cervical surgery
Animal Models and Experimental Medicine, EarlyView.This study establishes a reliable mouse model of permanent C5 palsy (post‐laminectomy complication) via dorsal approach, selectively severing the C5 anterior nerve root while preserving the posterior root through partial C4 and C5 laminectomy. The model successfully replicates clinical C5P features—flaccid shoulder paralysis, electrophysiological ...
Chenpei Xu +8 more
wiley +1 more source
Physics Letters B, 1983 Abstract We discuss the problem of generation nonuniversality in different electroweak gauge models and possible consequences for the τ-lifetime and τ-asymmetry.
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Fractal and FractionalIn this paper, we improved a mathematical model of monkeypox disease with a time delay to a crossover model by incorporating variable-order and fractional differential equations, along with stochastic fractional derivatives, in three different time ...
Nasser H. Sweilam +4 more
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On (g − 2) μ from gauged U(1) X
Journal of High Energy Physics, 2022 We investigate an economical explanation for the (g − 2) μ anomaly with a neutral vector boson from a spontaneously broken U(1) X gauge symmetry. The Standard Model fermion content is minimally extended by 3 right-handed neutrinos.
Admir Greljo +3 more
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Compactness of powers of \omega
, 2013 We characterize exactly the compactness properties of the product of \kappa\ copies of the space \omega\ with the discrete topology. The characterization involves uniform ultrafilters, infinitary languages, and the existence of nonstandard elements in ...
Lipparini, Paolo
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Nonstandard numerical methods for a class of predator-prey models with predator interference
Electronic Journal of Differential Equations, 2007 We analyze a class of predator-prey models with Beddington-DeAngelis type functional response. The models incorporate the mutual interference between predators, which stabilizes predator-prey interactions even when only a linear intrinsic growth rate of ...
Dobromir T. Dimitrov +1 more
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