Results 71 to 80 of about 2,530 (205)

A Parallel Adaptive Newton-Krylov-Schwarz Method for 3D Compressible Inviscid Flow Simulations

Modelling and Simulation in Engineering, 2013
A parallel adaptive pseudo transient Newton-Krylov-Schwarz (αΨNKS) method for the solution of compressible flows is presented. Multidimensional upwind residual distribution schemes are used for space discretisation, while an implicit time-marching scheme
Marzio Sala, Pénélope Leyland, Angelo Casagrande   +2 more
doaj   +1 more source

Do Family Changes Constitute a Comprehensive Demographic Shift? A Comparison of the Spatial Dynamics of Five Family Changes in Switzerland (1969–2023)

Tijdschrift voor Economische en Sociale Geografie, EarlyView.
Abstract Several theories have been proposed to explain the family changes that have occurred in Europe since the mid‐1960s. It is often assumed that as these changes occurred simultaneously; they have a common origin and represent the same demographic shift.
Adrita Banerjee, Yoann Doignon, Oumar Mbath, Amira Hamieh, Philippe Wanner   +4 more
wiley   +1 more source

The Information Geometry of Sparse Goodness-of-Fit Testing

Entropy, 2016
This paper takes an information-geometric approach to the challenging issue of goodness-of-fit testing in the high dimensional, low sample size context where—potentially—boundary effects dominate. The main contributions of this paper are threefold: first,
Paul Marriott, Radka Sabolová, Germain Van Bever, Frank Critchley   +3 more
doaj   +1 more source

Cardiac remodelling in type 2 diabetes: Pathophysiological mechanisms and opportunities for multiscale computational modelling and simulation

The Journal of Physiology, EarlyView.
Abstract figure legend Overview of multiscale cardiac remodelling in type 2 diabetes and how to model and simulate these changes using a human‐based, multiscale computational framework. Cardiac remodelling in type 2 diabetes occurs at ionic channel, protein, cellular, tissue and whole‐organ level, affecting the electrophysiological function, mechanical
Ambre Bertrand, Jakub Tomek, Blanca Rodriguez   +2 more
wiley   +1 more source

Filtering and M-ary Detection of Markov Modulated Mean Reverting Model

Sultan Qaboos University Journal for Science, 2010
In an earlier paper we developed a stochastic model incorporating a double-Markov modulated mean-reversion model. The model is based on an explicit discretisation  of the corresponding continuous time dynamics.
Lakhdar Aggoun, Mohamed Al-Lawati, W.P. Malcolm   +2 more
doaj   +1 more source

A novel dual‐decomposition method for non‐convex two‐stage stochastic mixed‐integer quadratically constrained quadratic problems

International Transactions in Operational Research, Volume 33, Issue 5, Page 3128-3157, September 2026.
Abstract We propose the novel p‐branch‐and‐bound method for solving two‐stage stochastic programming problems whose deterministic equivalents are represented by non‐convex mixed‐integer quadratically constrained quadratic programming (MIQCQP) models. The precision of the solution generated by the p‐branch‐and‐bound method can be arbitrarily adjusted by
Nikita Belyak, Fabricio Oliveira
wiley   +1 more source

Finding a mix of renewable energy for different stakeholders by applying multi‐criteria decision‐making techniques

International Transactions in Operational Research, Volume 33, Issue 4, Page 2499-2534, July 2026.
Abstract This paper presents a two‐stage model for planning a renewable energy portfolio by balancing economic, social and environmental sustainability goals. The first stage addresses a multi‐objective problem where conflictive impacts generated by the energy portfolios should be optimised according to the corresponding economic, social or ...
Amelia Bilbao‐Terol, Verónica Cañal‐Fernández, Carmen González‐Pérez   +2 more
wiley   +1 more source

Discretising controllers with slow sampling

IET Control Theory & Applications, 2007
A simple approach to digital control design is the local discretisation of an effective continuous-time control law, such as well-tuned PID (proportional-integral-derivative). There are rules of thumb (e.g. the sample rate should be at least 25× the closed-loop bandwidth) that ensure only marginal degradation in performance, but these often require ...
D.W. Clarke, S.P. Maslen
openaire   +1 more source

Investigation of Solution Accuracy in PFEM Simulations Using Benchmark Problems

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT The simulation of large topological changes, such as those occurring in Cone Penetration Testing (CPT) and vibratory pile driving, remains a major challenge in computational geomechanics. Excessive mesh distortions render classical approaches like the Finite Element Method (FEM) unsuitable, emphasizing the need for alternative methodologies ...
Antaeus Bettmann, Jan Machaček, Juan M. Rodríguez, Hauke Zachert, Ralf Müller   +4 more
wiley   +1 more source

High-Order B-Spline Finite Difference Approach for Schrodinger Equation in Quantum Mechanics

East European Journal of Physics
This paper presents a new numerical method for solving the quantum mechanical complex-valued Schrodinger equation (CSE). The technique combines a second-order Crank-Nicolson scheme based on the finite element method (FEM) for temporal discretisation with
Archana Senapati, Balaji Padhy, Shashikant Das   +2 more
doaj   +1 more source