Results 61 to 70 of about 11,648 (307)

Singular perturbations to semilinear stochastic heat equations [PDF]

open access: yes, 2010
We consider a class of singular perturbations to the stochastic heat equation or semilinear variations thereof. The interesting feature of these perturbations is that, as the small parameter epsilon tends to zero, their solutions converge to the 'wrong ...
Hairer, Martin
core   +3 more sources

ROBUST PROPERTY AND STABILITY MARGIN OF LINEAR SYSTEMS

open access: yesМіжнародний науково-технічний журнал "Проблеми керування та інформатики", 2007
For the linear systems possibility of presentation of robust properties is examined by the critical size of small parameter of singular perturbations. Examples are given for the systems with «slow» component of low order.
S.А. Dubovik
doaj   +1 more source

Non-Singular Finite Time Tracking Control Approach Based on Disturbance Observers for Perturbed Quadrotor Unmanned Aerial Vehicles

open access: yesSensors, 2022
In this paper, a disturbance observer based on the non-singular terminal sliding mode control method was presented for the quadrotor in the presence of wind perturbation. First, the position and attitude dynamical equation of the quadrotor was introduced
Fayez F. M. El-Sousy   +6 more
doaj   +1 more source

RoundMi: A quantitative method to analyze mitochondrial morphology in mitotic cells

open access: yesFEBS Open Bio, EarlyView.
RoundMi is a workflow for rapid analysis of mitochondrial morphology in mitotic cells. By combining adaptive preprocessing with automated segmentation and quantification, it enables accurate measurements from single focal plane images, reducing acquisition time and computational demands while remaining compatible with high‐throughput fixed and live ...
Elmira Parvindokht Bararpour   +2 more
wiley   +1 more source

Some Remarks on 1D Schrödinger Operators With Localized Magnetic and Electric Potentials

open access: yesFrontiers in Physics, 2019
One-dimensional Schrödinger operators with singular perturbed magnetic and electric potentials are considered. We study the strong resolvent convergence of two families of the operators with potentials shrinking to a point.
Yuriy Golovaty
doaj   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova   +2 more
wiley   +1 more source

Singular perturbations and boundary layers [PDF]

open access: yes, 2018
Singular perturbations occur when a small coefficient affects the highest order derivatives in a system of partial differential equations. From the physical point of view singular perturbations generate in the system under consideration thin layers ...
Jung, Chang-Yeol   +3 more
core   +1 more source

On combined asymptotic expansions in singular perturbations

open access: yesElectronic Journal of Differential Equations, 2002
A structured and synthetic presentation of Vasil'eva's combined expansions is proposed. These expansions take into account the limit layer and the slow motion of solutions of a singularly perturbed differential equation.
Eric Benoit   +2 more
doaj  

How phagocytic cells kill bacteria: Lessons from a professional killer

open access: yesFEBS Open Bio, EarlyView.
How phagocytic cells ingest and kill bacteria has been studied for more than a century, but many questions remain unanswered. The study of the amoeba Dictyostelium discoideum brings new answers, and new questions. Professional phagocytic cells such as neutrophils and macrophages, as well as free‐living soil amoebae like Dictyostelium discoideum, employ
Otmane Lamrabet, Pierre Cosson
wiley   +1 more source

Compact Attractors and Singular Perturbations [PDF]

open access: yes, 1987
Hale, Jack K.. (1987). Compact Attractors and Singular Perturbations.
Hale, Jack K.
core  

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