Results 11 to 20 of about 5,016,978 (196)

On the use of exponential time integration methods in atmospheric models [PDF]

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2013
Exponential integration methods offer a highly accurate approach to the time integration of large systems of differential equations. In recent years, they have attracted increased attention in a number of diverse fields due to advances in their ...
Colm Clancy, Janusz A. Pudykiewicz
doaj   +1 more source

Hippocampal “Time Cells”: Time versus Path Integration [PDF]

open access: yesNeuron, 2013
Recent studies have reported the existence of hippocampal "time cells," neurons that fire at particular moments during periods when behavior and location are relatively constant. However, an alternative explanation of apparent time coding is that hippocampal neurons "path integrate" to encode the distance an animal has traveled.
Kraus, Benjamin J.   +4 more
openaire   +2 more sources

A Hybrid Time Integration Scheme for the Discontinuous Galerkin Discretizations of Convection-Dominated Problems

open access: yesEnergies, 2020
Discontinuous Galerkin (DG) method is a popular high-order accurate method for solving unsteady convection-dominated problems. After spatially discretizing the problem with the DG method, a time integration scheme is necessary for evolving the result ...
Liang Li, Songping Wu
doaj   +1 more source

Time integration of rectangular membrane free vibration using spline-based differential quadrature [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2016
In this paper, numerical spline-based differential quadrature is presented for solving the boundary and initial value problems, and its application is used to solve the fixed rectangular membrane vibration equation.
Sara Javidpoor   +2 more
doaj   +1 more source

Modelling time-integrated fluxes of CO2 and CH4 in peatlands: A review [PDF]

open access: yesMires and Peat, 2019
There is widespread interest in estimating annual carbon dioxide (CO2) and methane (CH4) budgets for peatlands using data collected from flux chambers. Flux-chamber measurements are a snapshot of the conditions on a particular site and may not adequately
A.J. Baird   +3 more
doaj   +1 more source

Stable and Efficient Time Integration of a Dynamic Pore Network Model for Two-Phase Flow in Porous Media

open access: yesFrontiers in Physics, 2018
We study three different time integration methods for a dynamic pore network model for immiscible two-phase flow in porous media. Considered are two explicit methods, the forward Euler and midpoint methods, and a new semi-implicit method developed herein.
Magnus Aa. Gjennestad   +3 more
doaj   +1 more source

A Time Integration Method Based on Galerkin Weak Form for Nonlinear Structural Dynamics

open access: yesApplied Sciences, 2019
This paper presents a step-by-step time integration method for transient solutions of nonlinear structural dynamic problems. Taking the second-order nonlinear dynamic equations as the model problem, this self-starting one-step algorithm is constructed ...
Qinyan Xing, Qinghao Yang, Weixuan Wang
doaj   +1 more source

Time step rescaling recovers continuous-time dynamical properties for discrete-time Langevin integration of nonequilibrium systems [PDF]

open access: yes, 2014
When simulating molecular systems using deterministic equations of motion (e.g., Newtonian dynamics), such equations are generally numerically integrated according to a well-developed set of algorithms that share commonly agreed-upon desirable properties.
Chodera, John D.   +2 more
core   +2 more sources

Energy conserving time integration scheme for geometrically exact beam [PDF]

open access: yes, 2007
An energy conserving finite-element formulation for the dynamic analysis of geometrically non-linear beam-like structures undergoing large overall motions has been developed.
Gams, Matija, Planinc, Igor, Saje, Miran
core   +1 more source

A sensory integration account for time perception.

open access: yesPLoS Computational Biology, 2021
The connection between stimulus perception and time perception remains unknown. The present study combines human and rat psychophysics with sensory cortical neuronal firing to construct a computational model for the percept of elapsed time embedded ...
Alessandro Toso   +4 more
doaj   +1 more source

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