Now showing items 275-294 of 1021

• Efficient mass and stiffness matrix assembly via weighted Gaussian quadrature rules for B-splines ﻿

(Journal of Computational and Applied Mathematics, 2019-12-14)
Calabr{\`o} et al. [10] changed the paradigm of the mass and stiffness computation from the traditional element-wise assembly to a row-wise concept, showing that the latter one offers integration that may be orders of ...
• An efficient multigrid strategy for large-scale molecular mechanics optimization ﻿

(Journal of Computational Physics, 2017-08-01)
Static mechanical properties of materials require large-scale nonlinear optimization of the molecular mechanics model under various controls. This paper presents an efficient multigrid strategy to solve such problems. This ...
• Efficient quadrature rules for subdivision surfaces in isogeometric analysis ﻿

(Computer Methods in Applied Mechanics and Engineering, 2018-10)
We introduce a new approach to numerical quadrature on geometries defined by subdivision surfaces based on quad meshes in the context of isogeometric analysis. Starting with a sparse control mesh, the subdivision process ...
• Efficient rigorous numerics for higher-dimensional PDEs via one-dimensional estimates ﻿

(SIAM Journal on Numerical Analysis, 2013-12-31)
We present an efficient rigorous computational method which is an extension of the work Analytic Estimates and Rigorous Continuation for Equilibria of Higher-Dimensional PDEs (M. Gameiro and J.-P. Lessard, J. Differential ...
• Efficient Rotating Frame Simulation in Turbomachinery ﻿

(Proceedings of ASME Turbo Expo 2014: Turbine Technical Conference and Exposition; Dusseldorf, Germany, June 16-20 2014", 2014-12-31)
This paper deals with the simulation of steady flows in tur- bomachinery. Two approaches are proposed, the first one is the classical multiple-rotating frame method (MRF) by multi- zone approach where the different zones ...
• El efecto de Talbot: de la óptica a la ecuación de Schrödinger ﻿

(TEMat, 2017-07)
El objetivo de este artículo es dar a conocer un bello efecto óptico que se denomina efecto de Talbot. Primero, describiremos el fenómeno y comentaremos su descubrimiento a mediados del siglo XIX. A continuación, analizaremos ...
• Electrochemical Potential Derived from Atomic Cluster Structures ﻿

(Journal of Physical Chemistry Letters, 2016-01-01)
Based on the atomic cluster structures and free electron approximation model, it is revealed that the electrochemical potential (ECP) for the system of interest is proportional to the reciprocal of atomic cluster radius ...
• Emergence of cooperation in phenotypically heterogeneous populations: A replicator dynamics analysis ﻿

(Journal of Statistical Mechanics: Theory and Experiment, 2015-12-31)
The emergence of cooperation is analyzed in heterogeneous populations where two kinds of individuals exist according to their phenotypic appearance. Phenotype recognition is assumed for all individuals: individuals are ...
• Emerging properties of financial time series in the "game of Life" ﻿

(Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2011-12-31)
We explore the spatial complexity of Conway's "Game of Life," a prototypical cellular automaton by means of a geometrical procedure generating a two-dimensional random walk from a bidimensional lattice with periodical ...
• Endpoint Sobolev continuity of the fractional maximal function in higher dimensions ﻿

(2019)
We establish continuity mapping properties of the non-centered fractional maximal operator $M_{\beta}$ in the endpoint input space $W^{1,1}(\mathbb{R}^d)$ for $d \geq 2$ in the cases for which its boundedness is known. ...
• Energy-aware capacity scaling in virtualized environments with performance guarantees ﻿

(Performance Evaluation, 2011-12-31)
We investigate the trade-off between performance and power consumption in servers hosting virtual machines running IT services. The performance behavior of such servers is modeled through Generalized Processor Sharing (GPS) ...
• Energy-norm-based and goal-oriented automatic hp adaptivity for electromagnetics: Application to waveguide Discontinuities ﻿

(IEEE Transactions on Microwave Theory and Techniques, 2008-12-31)
The finite-element method (FEM) enables the use of adapted meshes. The simultaneous combination of h (local variations in element size) and p (local variations in the polynomial order of approximation) refinements, i.e., ...
• Enhanced variational image dehazing ﻿

(SIAM Journal on Imaging Sciences, 2015-12-31)
Images obtained under adverse weather conditions, such as haze or fog, typically exhibit low contrast and faded colors, which may severely limit the visibility within the scene. Unveiling the image structure under the haze ...
• Enhancing sampling in atomistic simulations of solid state materials for batteries: a focus on olivine NaFePO$_4$ ﻿

(Theoretical Chemistry Accounts, 2017-03-07)
The study of ion transport in electrochemically active materials for energy storage systems requires simulations on quantum-, atomistic- and meso-scales. The methods accessing these scales not only have to be effective but ...
• Enhancing Sampling in Computational Statistics Using Modified Hamiltonians ﻿

(2016-11-15)
The Hamiltonian Monte Carlo (HMC) method has been recognized as a powerful sampling tool in computational statistics. In this thesis, we show that performance of HMC can be dramatically improved by replacing Hamiltonians ...
• Equilibrium and Transport Properties of Quantum Many-Body Systems ﻿

(2019-10-30)
This thesis is a study of equilibrium and dynamical properties of macroscopic quantum many-body problems. An important part of the manuscript concerns the study of heat and charge transport properties of fermions on the ...
• Equisingularity in One-Parameter Families of Generically Reduced Curves ﻿

(International Mathematics Research Notices, 2016-01-01)
We explore some equisingularity criteria in one-parameter families of generically reduced curves. We prove the equivalence between Whitney regularity and Zariski’s discriminant criterion. We prove that topological triviality ...
• Ergodic transition in a simple model of the continuous double auction ﻿

(PLoS ONE, 2014-12-31)
We study a phenomenological model for the continuous double auction, whose aggregate order process is equivalent to two independent M/M/1 queues. The continuous double auction defines a continuous-time random walk for trade ...
• Erratum to: Relativistic Hardy Inequalities in Magnetic Fields [J Stat Phys, 154, (2014), 866-876, DOI 10.1007/s10955-014-0915-0] ﻿

(Journal of Statistical Physics, 2015-12-31)
[No abstract available]
• Estimating attraction basin sizes ﻿

(Lecture Notes in Computer Science, 2016-10-01)
The performance of local search algorithms is influenced by the properties that the neighborhood imposes on the search space. Among these properties, the number of local optima has been traditionally considered as a ...