Results 161 to 170 of about 335,151 (313)

Hybrid Reaction–Diffusion Epidemic Models: Dynamics and Emergence of Oscillations

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper, we construct a hybrid epidemic mathematical model based on a reaction–diffusion system of the SIR (susceptible‐infected‐recovered) type. This model integrates the impact of random factors on the transmission rate of infectious diseases, represented by a probabilistic process acting at discrete time steps.
Asmae Tajani, Cristiana J. Silva, Guillaume Cantin   +2 more
wiley   +1 more source

Space‐Time FEM Solution of Dynamic Contact Problem With Discontinuous Velocity for Multiple Impact of Deformed Bar Using PDAS Method

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT A class of one‐dimensional impact and dynamic contact problems taking into account non‐smooth velocities is studied. The new space‐time finite element approximation of dynamic variational inequalities is suggested. The non‐smooth solution for the impact of an obstacle by an elastic bar and its energy conservation under persistency conditions ...
Victor A. Kovtunenko, Adrien Petrov, Yves Renard   +2 more
wiley   +1 more source

Does adding physical activity improve spinal bone mineral density in postmenopausal women?: A cross-sectional analysis of NHANES 2011 to 2018. [PDF]

Medicine (Baltimore)
Wang Y, Liu B, Wang J, Wang Y, Chen C, Wang P.   +5 more
europepmc   +1 more source

Analysis of a Mathematical Model of Marital Satisfaction

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT A large number of marriages end in divorce. In this paper, we present a model for the emotional state of a couple based on bilinear ordinary differential equations. We study the effect of changes of each individual's self‐emotional state on the couple's state.
Benito Chen‐Charpentier, C. E. Garza‐Hume, M. C. Jorge   +2 more
wiley   +1 more source

torchtree: Flexible Phylogenetic Model Development and Inference Using PyTorch. [PDF]

Syst Biol
Fourment M, Macaulay M, Swanepoel CJ, Ji X, Suchard MA, Matsen Iv FA.   +5 more
europepmc   +1 more source

The Piecewise Parabolic Method for the Parameters Estimation in an Ocean Pollutant Transport Adjoint Model

, 2020
Chunhong Wang, Jiang-hu Li, Zhao Yan, Ning Li   +3 more
openalex   +2 more sources

Analytical Solutions for the Cardiac Extracellular‐Membrane‐Intracellular Model

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT The cardiac extracellular‐membrane‐intracellular (EMI) model is a novel mathematical framework for cardiac electrophysiology simulations. The cardiac EMI model provides a more detailed description of the heart's electrical activity compared to traditional monodomain and bidomain models, potentially making it better‐suited for understanding the
Carlos Ballesteros, Alexei Cheviakov, Raymond J. Spiteri   +2 more
wiley   +1 more source

Correlation between cholesterol and ambulatory blood pressure in postmenopausal osteoporotic patients: a <i>post-hoc</i> analysis of an observational study. [PDF]

Front Med (Lausanne)
Lin Z, Wu T, Zhao Y, Wang C, Wu G.
europepmc   +1 more source

cpop: Detecting Changes in Piecewise-Linear Signals

Paul Fearnhead, Daniel Grose
openalex   +2 more sources

A class of piecewise linear differential equations arising in biological models

, 2002
Jean‐Luc Gouzé, Tewfik Sari
openalex   +2 more sources