Effect of awareness, quarantine and vaccination as control strategies on COVID-19 with Co-morbidity and Re-infection. [PDF]
Infect Dis Model, 2022 Saha AK, Saha S, Podder CN.
europepmc +1 more source
Free Form based active contours for image segmentation and free space perception [PDF]
arXiv, 2016 In this paper we present a novel approach for representing and evolving deformable active contours. The method combines piecewise regular B{\'e}zier models and curve evolution defined by local Free Form Deformation. The contour deformation is locally constrained which allows contour convergence with almost linear complexity while adapting to various ...
arxiv
Evidence of Strange Attractors in Class C Amplifier with Single Bipolar Transistor: Polynomial and Piecewise-Linear Case. [PDF]
Entropy (Basel), 2021 Petrzela J.
europepmc +1 more source
Lower Bounds on Complexity of Lyapunov Functions for Switched Linear Systems [PDF]
arXiv, 2015 We show that for any positive integer $d$, there are families of switched linear systems---in fixed dimension and defined by two matrices only---that are stable under arbitrary switching but do not admit (i) a polynomial Lyapunov function of degree $\leq d$, or (ii) a polytopic Lyapunov function with $\leq d$ facets, or (iii) a piecewise quadratic ...
arxiv
Joint Encryption Model Based on a Randomized Autoencoder Neural Network and Coupled Chaos Mapping. [PDF]
Entropy (Basel), 2023 Hu A, Gong X, Guo L.
europepmc +1 more source
Sampling-based verification of Lyapunov's inequality for piecewise continuous nonlinear systems [PDF]
arXiv, 2016 This paper considers a sampling-based approach to stability verification for piecewise continuous nonlinear systems via Lyapunov functions. Depending on the system dynamics, the candidate Lyapunov function and the set of initial states of interest, one generally needs to handle large, possibly non-convex or non-feasible optimization problems.
arxiv
Applications of nonlinear diffusion in image processing and computer vision [PDF]
, 2000 Nonlinear diffusion processes can be found in many recent methods for image processing and computer vision. In this article, four applications are surveyed: nonlinear diffusion filtering, variational image regularization, optic flow estimation, and ...
Weickert, Joachim
core +4 more sources
Theory of Gating in Recurrent Neural Networks. [PDF]
Phys Rev X, 2022 Krishnamurthy K, Can T, Schwab DJ.
europepmc +1 more source
On the Riemann boundary value problem in the case of a piecewise Lyapunov contour
, 2017 The generalized Riemann boundary value-problem is investigated in the case of a piecewise Lyapunov contour. It is proved that the conditions for normal solvability depend on the coefficients of the problem, as well as on the presence of corner points on the contour of integration.
openaire +1 more source
Multiple epidemic waves as the outcome of stochastic SIR epidemics with behavioral responses: a hybrid modeling approach. [PDF]
Nonlinear Dyn, 2023 Ochab M +3 more
europepmc +1 more source