Results 101 to 110 of about 386,050 (293)

Resolving the mass--anisotropy degeneracy of the spherically symmetric Jeans equation II: optimum smoothing and model validation

open access: yes, 2014
The spherical Jeans equation is widely used to estimate the mass content of a stellar systems with apparent spherical symmetry. However, this method suffers from a degeneracy between the assumed mass density and the kinematic anisotropy profile, $\beta(r)
Diakogiannis, Foivos I.   +2 more
core   +1 more source

On computing smooth solutions of problems with large lipschitz constants [PDF]

open access: yesApplied Numerical Mathematics, 1986
This paper is concerned with the numerical integration of smooth solutions of ordinary differential equations assuming that they possess fast growing or decaying solutions. To study this problem the author considers as model problem a first order linear differential system with variable coefficients whose fundamental matrix has a dichotomy with slow ...
openaire   +3 more sources

Impact of Pre‐Oxidation Treatments on a Recycled MgO/Steel‐Composite as Carbon Free Anode in Aluminum‐Electrolysis Environments

open access: yesAdvanced Engineering Materials, EarlyView.
Cermets (60 vol.% AISI 316L stainless steel, 40 vol.% recycled MgO), intended for use in aluminum electrolysis, were pre‐oxidized in three furnaces with different heating technologies and subjected to a cryolite corrosion test. The different atmospheres influenced the formation of oxide layers, which in turn affected corrosion resistance and ...
Patricia Kaiser   +4 more
wiley   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

A Power Smoothing Control Strategy and Optimized Allocation of Battery Capacity Based on Hybrid Storage Energy Technology

open access: yesEnergies, 2012
Wind power parallel operation is an effective way to realize the large scale use of wind power, but the fluctuations of power output from wind power units may have great influence on power quality, hence a new method of power smoothing and capacity ...
Yong Li   +4 more
doaj   +1 more source

Bounded state space [PDF]

open access: yes
This investigation is divided functionally into three different areas: (1) study of bounded state space, (2) nonlinear smoothing theory, and (3) system identification.
Eyman, E. D.
core   +1 more source

Best constants in some operator smoothness estimates

open access: yesJournal of Functional Analysis, 1992
The author provides a short proof of the inequality \[ \int_{-\infty}^ \infty \|(1+ x^ 2)^{- 1/2} (1-\Delta)^{1/4} e^{it\Delta} u\|^ 2 dt \leq C\| u\|^ 2 \] with explicit (essentially exact) values for \(C\) [cf. \textit{M. Ben-Artzi} and \textit{S. Klainerman}, Regularity and decay of evolution equations, preprint and \textit{T.
openaire   +2 more sources

Computing Lyapunov constants for random recurrences with smooth coefficients

open access: yesJournal of Computational and Applied Mathematics, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wright, Thomas G, Trefethen, Lloyd N
openaire   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Robust Discontinuity Preserving Optical Flow Methods

open access: yesImage Processing On Line, 2016
In this work, we present an implementation of discontinuity-preserving strategies in TV-L1 optical flow methods. These are based on exponential functions that mitigate the regularization at image edges, which usually provide precise flow boundaries ...
Nelson Monzón   +2 more
doaj   +1 more source

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