Results 41 to 50 of about 4,221,495 (320)

Fitted computational method for singularly perturbed convection-diffusion equation with time delay

Frontiers in Applied Mathematics and Statistics, 2023
A uniformly convergent numerical scheme is proposed to solve a singularly perturbed convection-diffusion problem with a large time delay. The diffusion term of the problem is multiplied by a perturbation parameter, ε.
Sisay Ketema Tesfaye, Gemechis File Duressa, Mesfin Mekuria Woldaregay, Tekle Gemechu Dinka   +3 more
doaj   +1 more source

On Multivariate Bernstein Polynomials

Mathematics, 2020
In this paper, we first revisit and bring together as a sort of survey, properties of Bernstein polynomials of one variable. Secondly, we extend the results from one variable to several ones, namely—uniform convergence, uniform convergence of the ...
Mama Foupouagnigni, Merlin Mouafo Wouodjié   +1 more
doaj   +1 more source

A NSFD Discretization of Two-Dimensional Singularly Perturbed Semilinear Convection-Diffusion Problems

Frontiers in Applied Mathematics and Statistics, 2022
Despite the availability of an abundant literature on singularly perturbed problems, interest toward non-linear problems has been limited. In particular, parameter-uniform methods for singularly perturbed semilinear problems are quasi-non-existent.
Olawale O. Kehinde, Justin B. Munyakazi, Appanah R. Appadu   +2 more
doaj   +1 more source

High-Order Hybrid Stratified Sampling: Fast Uniform-Convergence Fourier Transform Estimation [PDF]

, 2018
This paper considers the problem of estimating the Fourier transform of continuous-time signals from N nonuniformly collected observations. Here, we introduce a new class of Hybrid Stratified sampling scheme in conjunction with a suitable estimator ...
Al-Ani, M., Tarczynski, A., Andrzej Tarczynski Tarczynski, Bashar I. Ahmad, Ahmad, B.I., Mustafa Al-Ani   +5 more
core   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Analytical prediction for ground movements and liner internal forces induced by shallow tunnels considering non-uniform convergence pattern and ground-liner interaction mechanism

, 2017
Current studies for tunneling-induced ground movements provide little information on the complex interaction between the tunnel liner and the surrounding soils.
Zhiguo Zhang, Meng-Xi Zhang, Yun-Juan Jiang, Qiao-Mu Bai, Qi-Hua Zhao   +4 more
semanticscholar   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

Uniform Lacunary Statistical Convergence on Time Scales

International Journal of Analysis and Applications, 2017
We introduce (θ,m)-uniform lacunary density of any set and (θ,m)-uniform lacunary statistical convergence on an arbitrary time scale. Moreover, (θ,m)-uniform strongly p-lacunary summability and some inclusion relations about these new concepts are also ...
E. Yilmaz, S.A. Mohiuddine, Y. Altin, H. Koyunbakan   +3 more
doaj   +2 more sources

Angle criteria for uniform convergence of averaged projections and cyclic or random products of projections [PDF]

, 2016
We apply a new notion of angle between projections to deduce criteria for uniform convergence results of the alternating projections method under several different settings: averaged projections, cyclic products, quasiperiodic products and random ...
I. Oppenheim
semanticscholar   +1 more source

Autophagy and mitophagy in pancreatic β‐cell homeostasis and their involvement in diabetes pathophysiology

FEBS Letters, EarlyView.
This review focuses on the role of autophagy and mitophagy in maintaining pancreatic β‐cell function and homeostasis. We discuss how genetic defects affecting these pathways contribute to the development of type 1, type 2, monogenic, and gestational diabetes. We further explore their potential as therapeutic targets. Created in BioRender.
Yunkyeong Lee, Mingming Tong, Anna L. Gloyn   +2 more
wiley   +1 more source