Results 11 to 20 of about 890 (176)

Mathematical and numerical studies of nonstandard difference equation models of differential equations. Final technical report, September 1995--September 1997 [PDF]

open access: yes, 1997
The major thrust of this proposal was to continue our investigations of so-called non-standard finite-difference schemes as formulated by other authors. These schemes do not follow the standard rules used to model continuous differential equations by discrete difference equations.
Mickens, R.E.
openaire   +3 more sources

A Nonstandard Finite Difference Method for a Generalized Black–Scholes Equation [PDF]

open access: yes, 2022
An implicit finite difference scheme for the numerical solution of a generalized Black–Scholes equation is presented. The method is based on the nonstandard finite difference technique.
Mehdizadeh Khalsaraei, Mohammad   +9 more
core   +1 more source

Mathematical model of ships moving with a nonstandard propulsion and steering complex

open access: yesVestnik MGTU, 2018
The IEC 62065 is the standard with operational requirements, methods of testing and the required test data for tracking systems and the systems of automatic control used in sea navigation. Mathematical modeling in these systems is used to create control algorithms with a proactive effect on the monitored values such as heading of ship and coordination ...
Glushkov S. V.   +2 more
openaire   +2 more sources

Testing for zero-modification in count regression models [PDF]

open access: yes, 2006
Count data often exhibit overdispersion and/or require an adjustment for zero outcomes with respect to a Poisson model. Zero-modified Poisson (ZMP) and zero-modified generalized Poisson (ZMGP) regression models are useful classes of models for such ...
Min, Aleksey, Czado, Claudia
core   +1 more source

Advances in analysis, probability and mathematical physics: contributions of nonstandard analysis

open access: yes, 1995
In 1961 Robinson introduced an entirely new version of the theory of infinitesimals, which he called 'Nonstandard analysis'. 'Nonstandard' here refers to the nature of new fields of numbers as defined by nonstandard models of the first-order theory of ...
Luxemburg, Wilhelm A. J.   +8 more
core   +2 more sources

Mathematical Modelling and Nonstandard Schemes for the Corona Virus Pandemic

open access: yes, 2021
The programs used in this Master thesis: https://git.uni-wuppertal.de/1449563/covid-19-modelling/-/tree/master ...
openaire   +2 more sources

Mathematical and Numerical Studies of Nonstandard Difference Equation Models of Differential Equations [PDF]

open access: yes, 2008
This research examined the following items/issues: the NSFD methodology, technical achievements and applications, dissemination efforts and research related professional activities. Also a list of unresolved issues were identified that could form the basis for future research in the area of constructing and analyzing NSFD schemes for both ODE's and PDE'
openaire   +2 more sources

Artificial Intelligence‐Driven Network Pharmacology: A Methodological Paradigm Shift Bridging Traditional Wisdom and Modern Science

open access: yesAdvanced Intelligent Discovery, EarlyView.
Artificial intelligence is redefining network pharmacology (NP). By integrating knowledge graph engineering, geometric deep learning, multiomics anchoring, and generative reasoning, AI‐driven NP (AI‐NP) transforms static target mapping into dynamic, predictive modeling.
Cong Wang   +9 more
wiley   +1 more source

Front Propagation Through a Perforated Wall

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We consider a bistable reaction– diffusion equation ut=Δu+f(u)$u_t=\Delta u +f(u)$ on RN${\mathbb {R}}^N$ in the presence of an obstacle K$K$, which is a wall of infinite span with many holes. More precisely, K$K$ is a closed subset of RN${\mathbb {R}}^N$ with smooth boundary such that its projection onto the x1$x_1$‐axis is bounded and that ...
Henri Berestycki   +2 more
wiley   +1 more source

Matrix Nonstandard Numerical Schemes for Epidemic Models [PDF]

open access: yes, 2010
This paper is concerned with the construction and developing of several nonstandard finite difference (NSFD) schemes in matrix form in order to obtain numerical solutions of epidemic models.
Villanueva Micó, Rafael Jacinto   +2 more
core  

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