Results 31 to 40 of about 2,832,536 (290)

Experiments in orbit determination using numerical methods [PDF]

open access: yes, 1985
The dynamics of the observed object is written as a system of integral equations. This system is solved numerically by representing the components of the force function as linear combinations of B-splines and by applying the multigrid technique.
Traas, C.R.
core   +3 more sources

Flux Limiter Methods in 3D Numerical Relativity [PDF]

open access: yes, 2002
New numerical methods have been applied in relativity to obtain a numerical evolution of Einstein equations much more robust and stable. Starting from 3+1 formalism and with the evolution equations written as a FOFCH (first-order flux conservative ...
Bona, C., Palenzuela, C.
core   +2 more sources

Numerical Stability of Lanczos Methods [PDF]

open access: yes, 1999
The Lanczos algorithm for matrix tridiagonalisation suffers from strong numerical instability in finite precision arithmetic when applied to evaluate matrix eigenvalues. The mechanism by which this instability arises is well documented in the literature.
Alan Irving   +8 more
core   +2 more sources

A Portable Technology for Measuring Haze Levels in Thick Laminated Glass Panels

open access: yesChallenging Glass Conference Proceedings
Increasing security concerns and a trend towards larger glass panels are driving the adoption of thicker laminate glass panels in prominent architectural works worldwide.
Guillermo Casas   +2 more
doaj   +1 more source

Lagrangian Numerical Methods for Ocean Biogeochemical Simulations [PDF]

open access: yes, 2017
We propose two closely--related Lagrangian numerical methods for the simulation of physical processes involving advection, reaction and diffusion. The methods are intended to be used in settings where the flow is nearly incompressible and the P\'eclet ...
Paparella, Francesco, Popolizio, Marina
core   +2 more sources

Envisat/ASAR Images for the Calibration of Wind Drag Action in the Doñana Wetlands 2D Hydrodynamic Model

open access: yesRemote Sensing, 2013
Doñana National Park wetlands are located in southwest Spain, on the right bank of the Guadalquivir River, near the Atlantic Ocean coast. The wetlands dry out completely every summer and progressively flood again throughout the fall and winter seasons ...
Anaïs Ramos-Fuertes   +3 more
doaj   +1 more source

An Introduction to the Composite Element Method Applied to the Vibration Analysis of Trusses

open access: yesShock and Vibration, 2002
This paper introduces a new type of Finite Element Method (FEM), called Composite Element Method (CEM). The CEM was developed by combining the versatility of the FEM and the high accuracy of closed form solutions from the classical analytical theory ...
Marcos Arndt   +2 more
doaj   +1 more source

Influencing residential electricity consumption with tailored messages: long-term usage patterns and effects on user experience

open access: yesEnergy, Sustainability and Society, 2023
Background To transition our energy system toward sustainable production and consumption, it is important to successfully engage consumers to become active participants in this process.
Johann Schrammel   +4 more
doaj   +1 more source

Numerical Methods for Stochastic Differential Equations

open access: yes, 2004
Stochastic differential equations (sdes) play an important role in physics but existing numerical methods for solving such equations are of low accuracy and poor stability.
C. W. Gardiner   +5 more
core   +1 more source

Diseño y evaluación de la vida útil a través de resistividad eléctrica concreta

open access: yesRevista ALCONPAT, 2018
Este artículo describe el uso de la resistividad eléctrica del concreto como parámetro de desempeño de durabilidad y la información complementaria que puede proporcionar la resistividad, como: período de fraguado, resistencia mecánica y grado de curado ...
Carmen Andrade
doaj   +1 more source

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