Results 31 to 40 of about 14,047 (249)

Generalised discretisation of continuous-time distributions

open access: yesThe Journal of Engineering, 2020
In this study, the definition of discretisation that was proposed recently for continuous-time distributions is made applicable not only to ordinary functions but to a variety of distributions including weak derivatives such that they could be viewed ...
Shin Kawai, Noriyuki Hori, Noriyuki Hori
doaj   +1 more source

Geometric discretisation of the Toda system [PDF]

open access: yesPhysics Letters A, 1997
12 pages, LaTeX, 2 Postscript ...
openaire   +2 more sources

A mixed finite-element discretisation of the shallow-water equations [PDF]

open access: yesGeoscientific Model Development, 2023
This paper introduces a mixed finite-element shallow-water model on the sphere. The mixed finite-element approach is used as it has been shown to be both accurate and highly scalable for parallel architecture.
J. Kent, T. Melvin, G. A. Wimmer
doaj   +1 more source

Stable Crank–Nicolson Discretisation for Incompressible Miscible Displacement Problems of Low Regularity [PDF]

open access: yes, 2009
In this article we study the numerical approximation of incompressible miscible displacement problems with a linearised Crank-Nicolson time discretisation, combined with a mixed finite element and discontinuous Galerkin method.
Rüdiger Müller   +5 more
core   +1 more source

Comparative Analysis of Sampling Strategies for Solar Irradiance Signals and Their Implications in Discrete-Time Control Models

open access: yesEnergies
This study compares uniform and stratified sampling strategies applied to hourly solar irradiance signals. The analysis examines how each approach affects signal reconstruction, anomaly detection, and dynamic PV modelling.
Nicole Bastidas   +3 more
doaj   +1 more source

Benchmarking Discretisation Level of Continuous Attributes: Theoretical and Experimental Approaches

open access: yes, 2020
2019 IEEE International Conference on Big Data 9-12 Dec. 2019The discretisation of an attribute refers to partitioning its continuous numerical values into intervals, each of which is associated a categorical label.
Chen, Wanghu   +5 more
core   +1 more source

Modelling the runoff response in the Mulde catchment (Germany) [PDF]

open access: yesAdvances in Geosciences, 2006
The paper presents two different levels of regionalization used to represent the spatial distribution of landscape parameters for the hydrological modelling of the Mulde. The aim of this investigation was to find out how the discretisation level affects
B. Merz   +2 more
doaj  

High-order homogenisation by learning spatial discretisations of PDEs that provably preserve self-adjointness

open access: yesPartial Differential Equations in Applied Mathematics, 2022
Common techniques for the spatial discretisation of pdes on a macroscale grid include finite difference, finite elements and finite volume methods. Such methods typically impose assumed microscale structures on the subgrid fields, so without further ...
J.E. Bunder, A.J. Roberts
doaj   +1 more source

Discretisation of continuous-time stochastic optimal control problems with delay [PDF]

open access: yes, 2007
In the present work, we study discretisation schemes for continuous-time stochastic optimal control problems with time delay. The dynamics of the control problems to be approximated are described by controlled stochastic delay (or functional ...
Fischer, Markus
core   +1 more source

Spatial discretisation.

open access: yes, 2015
(A) comparison between linear (top) and exponential spatial discretisation (bottom). (B) example of spatial discretisation of 1–5 shells with constant oxygen drop.
Juan A. Delgado-SanMartin (820255)   +3 more
core   +1 more source

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