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Mountains
2025

Multiscale Hybrid-Mixed Methods for the Stokes and Brinkman Equations - A Priori Analysis

R. Araya, C. Harder, A.H. Poza and F. Valentin
SIAM Journal on Numerical Analysis, Volume 63, Number 2, Pages 588–618, 2025

Abstract

article

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Mountains
2024

Generalizing the Multiscale Hybrid-Mixed Method for Reactive-Advective- Diffusive Equations

R. Araya, R., F. Jaillet, D. Paredes and F. Valentin
Computer Methods in Applied Mechanics and Engineering, Vol. 428, pp. 117089, 2024

Abstract

In this work, we propose a new method called Petrov–Galerkin multiscale hybrid-mixed (PGMHM for short) as a variant of the multiscale hybrid-mixed (MHM) method. Its con- struction starts from a Petrov–Galerkin formulation for the Lagrange multiplier space, defined by enriching the trial spaces with residual-based functions on the partition faces. As a result, jump terms are added to the original MHM method, which penalizes the lack of conformity of MHM numerical solutions. As a consequence of space enrichment, the method induces local post-processing of the numerical solution that incorporates the model’s physical aspects and preserves the exact solution’s local conservation properties. Numerical experiments validate the theoretical results and verify the accuracy of PGMHM on highly heterogeneous problems.

article

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Mountains
2024

Revisiting the Robustness of the Multiscale Hybrid-Mixed Method: The Face-Based Strategy

D. Paredes, H. Versieux and F. Valentin
Journal of Computational and Applied Mathematics, Volume 436, Pages 115415, 2024

Abstract

In this work, we propose a new method called Petrov–Galerkin multiscale hybrid-mixed (PGMHM for short) as a variant of the multiscale hybrid-mixed (MHM) method. Its con- struction starts from a Petrov–Galerkin formulation for the Lagrange multiplier space, defined by enriching the trial spaces with residual-based functions on the partition faces. As a result, jump terms are added to the original MHM method, which penalizes the lack of conformity of MHM numerical solutions. As a consequence of space enrichment, the method induces local post-processing of the numerical solution that incorporates the model’s physical aspects and preserves the exact solution’s local conservation properties. Numerical experiments validate the theoretical results and verify the accuracy of PGMHM on highly heterogeneous problems.

article

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Mountains
2023

A Petrov-Galerkin Multiscale Hybrid-Mixed Method for the Darcy Equation on Polytopes

H. Fernando, L. Martins, W. Pereira and F. Valentin
Computational and Applied Mathematics, Volume 42, Number 173, 2023

Abstract

In this work, we propose a new method called Petrov–Galerkin multiscale hybrid-mixed (PGMHM for short) as a variant of the multiscale hybrid-mixed (MHM) method. Its con- struction starts from a Petrov–Galerkin formulation for the Lagrange multiplier space, defined by enriching the trial spaces with residual-based functions on the partition faces. As a result, jump terms are added to the original MHM method, which penalizes the lack of conformity of MHM numerical solutions. As a consequence of space enrichment, the method induces local post-processing of the numerical solution that incorporates the model’s physical aspects and preserves the exact solution’s local conservation properties. Numerical experiments validate the theoretical results and verify the accuracy of PGMHM on highly heterogeneous problems.

article

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Mountains
2023

The MHM Method for Elasticity on Polytopal Meshes

A.T. Gomes, W. Pereira and F. Valentin
IMA Journal of Numerical Analysis, Volume 43, Number 3, Pages 2265–2298, 2023

Abstract

The multiscale hybrid-mixed (MHM) method consists of a multi-level strategy to approximate the solution of boundary value problems with heterogeneous coefficients. In this context, we propose a new family of finite elements for the linear elasticity equation defined on coarse polytopal partitions of the domain. The finite elements rely on face degrees of freedom associated with multiscale bases obtained from local Neumann problems with piecewise polynomial interpolations on faces. We establish sufficient conditions on the fine-scale interpolations such that the MHM method is well-posed and optimally convergent under local regularity conditions. Also, a multi-level error analysis demonstrates that the MHM method achieves convergence without refining the coarse partition. The upshot is that the Poincar\'e and Korn's inequalities do not degenerate, and then the convergence arises on general meshes. Two- and three-dimensional numerical tests assess theoretical results and verify the robustness of the method on a multi-layer media case. Also, we address the computational aspects of the underlying parallel algorithm, which highlight the best compromise between execution time and memory allocation for a given error threshold.

article

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Mountains
2022

Bridging the Multiscale Hybrid-Mixed and Multiscale Hybrid High-Order Methods

T. Chaumont-Frelet, A. Ern, S. Lemaire and F. Valentin
ESAIM: M2AN, Volume 56, Number 1, Pages 261-285, 2022

Abstract

We establish the equivalence between the Multiscale Hybrid-Mixed (MHM) and the Multiscale Hybrid High-Order (MsHHO) methods for a variable diffusion problem with piecewise polynomial source terms. Under the idealized assumption that the local problems defining the multiscale basis functions are exactly solved, we prove that the equivalence holds for general polytopal (coarse) meshes and arbitrary approximation orders. Also, we leverage the interchange of properties to perform a unified convergence analysis, as well as to improve on both methods.

article

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Mountains
2021

An Adaptive Multiscale Hybrid-Mixed Method for the Oseen Equations

R. Araya, C. Cárcamo, A. H. Poza, and F. Valentin
Advances in Computational Mathematics, Volume 47, Number 15, Pages 1-15, 2021

Abstract

A novel residual a posteriori error estimator for the Oseen equations achieves efficiency and reliability by including multi-level contributions in its construction. Originates from the Multiscale Hybrid Mixed (MHM), the estimator combines residuals from the skeleton of the first-level partition of the domain, along with the contributions from element-wise approximations. Those second-level contributions infer the accuracy of multiscale basis computations as part of the MHM framework. Also, the face-degree of freedom of the MHM method shapes the estimator and induces a new face-adaptive procedure on the mesh’s skeleton only. As a result, the approach avoids re-meshing the first-level partition, which makes the adaptive process affordable and straightforward on complex geometries. Several numerical tests assess theoretical results.

article

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Mountains
2021

New H(div)-Conforming Multiscale Hybrid-Mixed Methods for the Elasticity Problem on Polygonal Meshes

P.R.B. Devloo, A. M. Farias, S.M. Gomes, W. Pereira, A. J. B. dos Santos, and F. Valentin
ESAIM: Mathematical Modelling and Numerical Analysis, Volume 55, Pages 1005-1037, 2021

Abstract

This work proposes a family of multiscale hybrid-mixed methods for the two-dimensional linear elasticity problem on general polygonal meshes. The new methods approximate displacement, stress, and rotation variables using two-scale discretizations. The first scale level setting consists of approximating the traction variable (Lagrange multiplier) in discontinuous polynomial spaces, and of computing rigid-body modes element wisely. In the second scale level, the methods are made effective by solving completely independent local Newmann elasticity problems written in a mixed form with weak symmetry enforced via a rotation multiplier. Since the finite-dimensional space for the traction variable constrains the discrete space for the local stress tensor, the discrete stress field lies in the H(div) space globally and stays in local equilibrium with external forces. We propose different choices to approximate local problems based on locally stable pairs of finite elements defined on affine second-level meshes. Those choices generate the family of multiscale finite element methods for which stability and convergence are proved in a unified framework. Notably, we prove that the methods are optimal and high-order convergent in the natural norms. Also, it emerges that the approximate displacement and stress divergence are super-convergent in the L2-norm. Numerical verification assess theoretical results and highlight the high precision of the new methods on coarse meshes for multilayered heterogeneous material problems.

article

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Mountains
2020

A Multiscale Hybrid-Mixed Method for the Helmholtz Equation in Heterogeneous Media

T. Chaumont-Frélet and F. Valentin
SIAM Journal on Numerical Analysis, Volume 58, Number 2, Pages 1029-1067, 2020

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2020

The Multiscale Hybrid Mixed Method in General Polygonal Meshes

G.R. Barrenechea, F. Jaillet, D. Paredes, and F. Valentin
Numeriche Mathematik, Volume 145, Pages 197-237, 2020

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2019

On a Multiscale a Posteriori Error Estimator for the Stokes and Brinkman Equations

R. Araya, R. Rebolledo, and F. Valentin
IMA Journal of Numerical Analysis, Volume 41, Pages 344-380, 2019

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2019

A Multiscale Hybrid Method for Darcy’s Problems using Mixed Finite Element Local Solvers

O. Durán, P.R.B. Devloo, S.M. Gomes, and F. Valentin
Comp. Meth. Appl. Mech. Eng., Volume 354, Pages 213-244, 2019

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2018

The Multiscale Hybrid-Mixed Method for the Maxwell Equations in Heterogeneous Media

S. Lanteri, D. Paredes, C. Scheid, and F. Valentin
SIAM Multiscale Model. Simul., Volume 16, Number 4, Pages 1648–1683, 2018

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2017

Multiscale Hybrid-Mixed Method for the Stokes and Brinkman Equations – The Method

R. Araya, C. Harder, A. Poza, and F. Valentin
Comp. Meth. Appl. Mech. Eng., Volume 324, Pages 29–534, 2017

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2017

On the Robustness of Multiscale Hybrid-Mixed Methods

D. Paredes, F. Valentin, and H. M. Versieux
Math. Comp., Volume 86, Number 304, Pages 525–548, 2017

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2016

A Hybrid-Mixed Method for Elasticity

C. Harder, A.L. Madureira, and F. Valentin
ESAIM: Math. Model. Num. Anal., Volume 50, Number 2, Pages 311–336, 2016

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2015

On a Multiscale Hybrid-Mixed Method for Advective-Reactive Dominated Problems with Heterogenous Coefficients

C. Harder, D. Paredes, and F. Valentin
SIAM Multiscale Model. and Simul., Volume 13, Number 2, Pages 491–518, 2015

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2015

A Low-Order Local Projection Method for the Incompressible Navier–Stokes Equations in Two- and Three-Dimensions

R. Araya, A. H. Poza, and F. Valentin
IMA Journal of Numerical Analysis, Volume 36, Number 1, Pages 267– 295, 2015

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2014

An Adaptive Residual Local Projection Finite Element Method for the Navier-Stokes Equations

R. Araya, A. H. Poza, and F. Valentin
Advances in Computational Mathematics, Volume 40, Number 5-6, Pages 1093–1119, 2014

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2013

Multiscale Hybrid-Mixed Method

R. Araya, C. Harder, D. Paredes, and F. Valentin
SIAM J. Numer. Anal., Volume 51, Number 6, Pages 3505–3531, 2013

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2013

A Family of Multiscale Hybrid-Mixed Finite Element Methods for the Darcy Equation with Rough Coefficients

C. Harder, D. Paredes, and F. Valentin
J. Comput. Phys., Volume 245, Pages 107–130, 2013

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2012

Numerical Multiscale Methods for a Reaction Dominated Model

H. Fernando, C. Harder, D. Paredes, and F. Valentin
Comput. Methods Appl. Mech. Engrg., Volume 201-203, Pages 228–244, 2012

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2012

Numerical Multiscale Methods

A.L.G.A. Coutinho, L.P. Franca, and F. Valentin
International Journal for Numerical Methods in Fluids, Volume 70, Number 4, Pages 403–419, 2012

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2012

Convergence Analysis of a Residual Local Projection Finite Element Method for the Navier-Stokes Equations

R. Araya, G. R. Barrenechea, A.H. Poza, and F. Valentin
SIAM J. Numer. Anal., Volume 50, Number 2, Pages 669–699, 2012

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2011

Supporting the Perpetuation and Reproducibility of Numerical Method publications

A.T. Gomes, D. Paredes, and F. Valentin
Procedia CS, Volume 4, Pages 688–696, 2011

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2011

Simulating Transient Phenomena via Residual Free Bubbles

A.L.G.A. Coutinho, L.P. Franca, and F. Valentin
Comput. Methods Appl. Mech. Engrg., Volume 200, Number 25-28, Pages 2127–2130, 2011

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2011

Beyond Pressure Stabilization: A Low Order Local Projection Method for the Oseen Equation

G.R. Barrenechea and F. Valentin
Int. J. Numer. Methods Eng., Volume 86, Number 7, Pages 801–815, 2011

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2011

A Two-Level Enriched Finite Element Method for a Mixed Problem

A. Allendes, G.R. Barrenechea, E. Hernandez, and F. Valentin
Math. Comp., Volume 80, Pages 11–41, 2011

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2011

A Hierarchical Estimator Combined with a Stabilized Finite Element Method

R. Araya, A.H. Poza, and F. Valentin
Numerical Methods for PDE, Volume 28, Number 3, Pages 782–806, 2011

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2010

Consistent Local Projection Stabilized Finite Element Methods

G.R. Barrenechea and F. Valentin
SIAM J. Numer. Anal., Volume 48, Number 5, Pages 1801–1825, 2010

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2010

A Residual Local Projection Method for the Oseen Equation

G.R. Barrenechea and F. Valentin
Comput. Methods Appl. Mech. Engrg., Volume 199, Number 27-32, Pages 1906–1921, 2010

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2009

Stabilization Arising from PGEM: A Review and Further Developments

R. Araya, G.R. Barrenechea, L.P. Franca, and F. Valentin
Appl. Numer. Math., Volume 59, Number 9, Pages 2065–2081, 2009

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2009

On a Residual Local Projection Method for the Darcy Equation

L.P. Franca, C. Harder, and F. Valentin
C. R. Acad. Sci. Paris, Volume 347, Pages 1105–1110, 2009

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2009

A Symmetric Nodal Conservative Finite Element Method for the Darcy Equation

G.R. Barrenechea, L.P. Franca, and F. Valentin.
SIAM J. Numer. Anal., Volume 47, Number 5, Pages 3652–3677, 2009

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2008

Weighted Quadrature Rules for Finite Element Methods

S.P. Oliveira, A.L. Madureira, and F. Valentin
J. Comput. Appl. Math., Volume 227, Number 1, Pages 93–101, 2008

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2007

Asymptotics of the Poisson problem in Domains with Curved Rough Boundaries

A.L. Madureira and F. Valentin
SIAM Mathematical Analysis, Volume 38, Number 5, Pages 1450–1473, 2007

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2007

A Stabilized Finite Element Method for the Stokes Problem Including Element and Edge Residuals

R. Araya, G.R. Barrenechea, and F. Valentin
IMA Journal of Numerical Analysis, Volume 27, Pages 172–197, 2007

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2007

A Petrov-Galerkin Enriched Method: A Mass Conservative Finite Element Method for the Darcy Equation

G.R. Barrenechea, L.P. Franca, and F. Valentin
Comput. Methods Appl. Mech. Engrg., Volume 196, Number 2, Pages 2449–2464, 2007

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2006

Stabilized finite element methods based on multiscale enrichment for the Stokes problem

R. Araya, G.R. Barrenechea, and F. Valentin
SIAM J. Numer. Anal., Volume 44, Number 1, Pages 322-348, 2006

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2006

Enriched finite element methods for unsteady reaction-diffusion problems

L.P. Franca, J.V.A. Ramalho, and F. Valentin
Communications in Numerical Methods in Engineering, Volume 22, Number 6, Pages 619-625, 2006

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2005

Towards Multiscale Functions: Enriching Finite Element Spaces with Local but not Bubble–Like Functions

L.P. Franca, A.L. Madureira, and F. Valentin
Comput. Methods Appl. Mech. Engrg., Volume 194, Pages 3006–3021, 2005

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2005

Relationship between Multiscale Enrichment and Stabilized Finite Element Methods for the Generalized Stokes Problem

G.R. Barrenechea and F. Valentin
C.R. Acad. Sci.Paris, Ser. I, Volume 341, Pages 635–640, 2005

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2005

Multiscale and Residual–Free Bubble Functions for Reaction–Advection–Diffusion Problems

L.P. Franca, J.V.A. Ramalho, and F. Valentin
International Journal for Multiscale Enginnering, Volume 3, Number 3, Pages 297–312, 2005

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2005

Convergence analysis of a multiscale finite element method for singularly perturbed problems

L.P. Franca, A.L. Madureira, L. Tobiska, and F. Valentin
SIAM Multiscale Model. and Simul., Volume 4, Number 3, Pages 839–866, 2005

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

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Mountains
2002

New wall laws for the Unsteady Incompressible Navier- Stokes Equations

G.R. Barrenechea, P. LeTallec, and F. Valentin
ESAIM: M2AN, Volume 36, Number 2, Pages 177–203, 2002

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

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Mountains
2002

Analysis of Curvature Influence on Effective Boundary Conditions

A.L. Madureira and F. Valentin
C.R. Acad. Sci.Paris, Ser. I, Volume 335, Pages 499–504, 2002

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2002

An Unusual Stabilized Finite Element Method for a Generalized Stokes Problem

G.R. Barrenechea and F. Valentin
Numer. Math., Volume 92, Number 4, Pages 653–677, 2002

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2000

On an Improved Unusual Stabilized Finite Element Method for the Advective–Reactive–Diffusive Equation

L.P. Franca and F. Valentin
Comput. Methods Appl. Mech. Engrg., Volume 190, Number 13-14, Pages 1785–1800, 2000

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
1998

Rough Boundaries and Wall Laws

B. Mohammadi, O. Pironneau, and F. Valentin
International J. Numer. Methods in Fluids, Volume 27, Number 1-4, Pages 169–177, 1998

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
1998

Effective Boundary Conditions for Laminar Flows over Periodic Rough Boundaries

Y. Achdou, O. Pironneau, and F. Valentin
Journal of Computational Physics, Volume 147, Number 1, Pages 187–218, 1998

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
1998

Constructing Wall Laws with Domain Decomposition or Asymptotic Expansion techniques

Y. Achdou, P. LeTallec, F. Valentin, and O. Pironneau
Comput. Methods in Applied Mechanics and Engineering, Volume 151, Pages 215–232, 1998

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
1997

Domain Decomposition and Wall Laws

Y. Achdou, B. Mohammadi, O. Pironneau, and F. Valentin
Surikasekikenkyusho Kokyuroku, Volume 989, Pages 42–55, 1997

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
1995

Combining Stabilized Finite Element Methods

F. Valentin and L.P. Franca
Comput Appl. Math., Volume 14, Number 3, Pages 285– 300, 1995

Abstract

Although a substantial amount of research has examined the constructs of warmth and competence, far less has examined how these constructs develop and what benefits may accrue when warmth and competence are cultivated. Yet there are positive consequences, both emotional and behavioral, that are likely to occur when brands hold perceptions of both. In this paper, we shed light on when and how warmth and competence are jointly promoted in brands, and why these reputations matter.

article

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Mountains
2016

Foundations of the MHM method

C. Harder and F. Valentin
In G. R. Barrenechea, F. Brezzi, A. Cangiani, and E. H. Georgoulis, editors, Building Bridges: Connections and Challenges in Modern Approaches to Numerical Partial Differential Equations, Lecture Notes in Computational Science and Engineering. Springer, 2016.
image

Proven strategies for harnessing the power of social media to drive social change

Many books teach the mechanics of using Facebook, Twitter, and YouTube to compete in business. But no book addresses how to harness the incredible power of social media to make a difference. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

  • Lorem ipsum dolor sit amet, consectetur adipisicing elit.
  • Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
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Mountains
1998

Shape Control versus Boundary Control

Y. Achdou and O. Pironneau, and F. Valentin
In F. Murat et al, Equations aux dérivées partielles et applications. Articles dédiés à J.L.Lions, pages 1-18. Elsevier, 1998
image

Proven strategies for harnessing the power of social media to drive social change

Many books teach the mechanics of using Facebook, Twitter, and YouTube to compete in business. But no book addresses how to harness the incredible power of social media to make a difference. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

  • Lorem ipsum dolor sit amet, consectetur adipisicing elit.
  • Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
  • .sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
  • Onsectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

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Proceeding Series Research Report, HAL-01393011, 2016
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