Results 21 to 30 of about 336 (128)

Robust multitask feature learning with adaptive Huber regressions

Canadian Journal of Statistics, Volume 53, Issue 4, December 2025.
Abstract When data from multiple tasks have outlier contamination, existing multitask learning methods perform less efficiently. To address this issue, we propose a robust multitask feature learning method by combining the adaptive Huber regression tasks with mixed regularization. The robustification parameters can be chosen to adapt to the sample size,
Yuan Zhong, Xin Gao, Wei Xu
wiley   +1 more source

Numerical Modeling of Thermal EOR: Comprehensive Coupling of an AMR-Based Model of Thermal Fluid Flow and Geomechanics Modélisation numérique d’EOR thermique : couplage complet entre un modèle d’écoulement thermique basé sur une discrétisation adaptative et la géomécanique

Oil & Gas Science and Technology, 2013
Modeling Steam Assisted Gravity Drainage (SAGD) can involve significant CPU (Central Processing Unit) time when both thermal fluid flow and geomechanics are coupled in order to take into account variations of permeability and porosity inside the ...
Guy N., Enchéry G., Renard G.
doaj   +1 more source

Noisy matrix completion for longitudinal data with subject‐ and time‐specific covariates

Canadian Journal of Statistics, Volume 53, Issue 3, September 2025.
Abstract In this article, we consider the imputation of missing responses in a longitudinal dataset via matrix completion. We propose a fixed‐effect, longitudinal, low‐rank model that incorporates both subject‐specific and time‐specific covariates. To solve the optimization problem, a two‐step optimization algorithm is proposed, which provides good ...
Zhaohan Sun, Yeying Zhu, Joel A. Dubin
wiley   +1 more source

Développement d'une approche couplée Automates Cellulaires – Eléments Finis pour la modélisation du développement des structures de grains en soudage TIG A coupled Cellular Automaton – Finite Element approach for the modelling of grain structure development in TIG welding

MATEC Web of Conferences, 2013
Dans le domaine du soudage, les propriétés finales du cordon sont fortement liées à la structure de grains développée au cours des procédés de fusion / resolidification. La maîtrise des propriétés de l'assemblage final passe ainsi par une amélioration de
Chen Shijia, Guillemot Gildas, Gandin Charles-André   +2 more
doaj   +1 more source

Borders and Bridges – Boundaries as an Opportunity [PDF]

Journal of Systemics, Cybernetics and Informatics, 2022
The boundary is an ephemeral concept, an imaginary line that marks the terms of a territory. The term boundary is related to the concept of limit that indicates both a sign not to be exceeded and, by extension, a value that conditions a behavior or a ...
Stefano Follesa, Francesco Armato, Sabrina Cesaretti, Yao Peian   +3 more
doaj  

Racket sociality: investigating intimidation in North India

Journal of the Royal Anthropological Institute, Volume 31, Issue 3, Page 771-788, September 2025.
This article is an ethnographic investigation into acts of intimidation and threats. Theoretically, it dialogues with ‘racket’ – a key analytical term in the sociology of domination, state‐making, and mafias. The anthropology of power, violence, and crime has paid scant attention to the morphology of threats and the ways interpersonal intimidation ...
Lucia Michelutti
wiley   +1 more source

Linear Porothermoelastic Coupling by the Finite Element Method and Application to Petroleum Problems Couplage porothermoélastique linéaire par la méthode des éléments finis et application aux problèmes pétroliers

Oil & Gas Science and Technology, 2006
This article discusses the behavior of a porous rock in the domain of linear elastic strain, under the effect of mechanical (displacements, stresses), thermal and hydraulic loads (flow of a fluid).
Onaisi A.
doaj   +1 more source

Closing the books or keeping them open? Identity work in partner retirement from Big 4 accounting firms

Contemporary Accounting Research, Volume 42, Issue 3, Page 1839-1869, Fall 2025.
Abstract One view of the socialization experienced by professionals in global Big 4 firms suggests that the intensity of socialization engenders a strong and deep‐rooted professional identity. We scrutinize this claim by drawing on interviews with partners who retired from lifelong employment in Big 4 firms in Japan.
Ricardo Azambuja, Lisa Baudot, Takahiro Endo, Saori Matsubara   +3 more
wiley   +1 more source

Balanced longitudinal data clustering with a copula kernel mixture model

Canadian Journal of Statistics, Volume 53, Issue 1, March 2025.
Abstract Many common clustering methods cannot be used for clustering balanced multivariate longitudinal data in cases where the covariance of variables is a function of the time points. In this article, a copula kernel mixture model (CKMM) is proposed for clustering data of this type.
Xi Zhang, Orla A. Murphy, Paul D. McNicholas   +2 more
wiley   +1 more source

Etude par CAO d’une machine synchrone à aimant permanent pour la production d’énergie éolienne

Revue des Énergies Renouvelables, 2008
La mise en oeuvre d’une méthodologie de conception fondée sur la modélisation multi physique est l’objet de cet article. Elle consiste à associer une approche analytique et une approche numérique utilisant la Méthode des Eléments Finis (MEF).
M. Belatel, H. Benalla
doaj