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article

Development of three dimensional transient numerical heat conduction model with growth of oxide scale for steel billet reheat simulation

Satish Kumar Dubey, P. Srinivasan, S.K. Dubey, P. Srinivasan

International Journal of Thermal Sciences > 2014 > 84 > Complete > 214-227

This paper presents development of numerical heat conduction model for prediction of transient three dimensional temperature field in the billet. The model is applied to billet heating process in the reheat furnace. The discretization of governing equation is done by control volume approach and implicit scheme of finite difference method. The model captures various time dependent boundary conditions...

article

Assessment of implicit adaptive mesh‐free CFD modelling

Tao Zhang, George N. Barakos

International Journal for Numerical Methods in Fluids > 96 > 5 > 670 - 700

This work presents details and assesses implicit and adaptive mesh‐free CFD modelling approaches, to alleviate laborious mesh generation in modern CFD processes. A weighted‐least‐squares‐based, mesh‐free, discretisation scheme was first derived for the compressible RANS equations, and the implicit dual‐time stepping was adopted for improved stability and convergence. A novel weight balancing concept...

article

Hedonic plasticity of vegan burger patty in implicit or explicit reference frame conditions

Seulgi Kim, Seo‐Jin Chung

Journal of the Science of Food and Agriculture > 103 > 5 > 2641 - 2652

BACKGROUND The vegan food market is one of the fastest growing markets worldwide for ethical, environmental, and health reasons. However, vegan food is still relatively unfamiliar to Korean consumers. Their liking for vegan burger patties is in the early phase of development; thus, it is necessary to place the patties in an appropriate context or ‘frame’. RESULTS We investigated consumer (n = 269)...

article

Adaptively implicit MPDATA advection for arbitrary Courant numbers and meshes

Hilary Weller, James Woodfield, Christian Kühnlein, Piotr K. Smolarkiewicz

Quarterly Journal of the Royal Meteorological Society > 149 > 751 > 369 - 388

Advection schemes with time step restrictions are widely used in weather and climate models. This can lead to instability in the presence of high flow speeds (relative to mesh spacing) such as occurs in convective updraughts, regions of mesh convergence, or where the winds are unusually high. An adaptively implicit advection scheme is proposed that treats advection implicitly only where the Courant...

article

On implicit fractional q‐difference equations: Analysis and stability

Nadjet Laledj, Abdelkrim Salim, Jamal Eddine Lazreg, Saïd Abbas, more

Mathematical Methods in the Applied Sciences > 45 > 17 > 10775 - 10797

This paper deals with some existence and Ulam stability results for some classes of implicit fractional

q

‐difference equations with and without random effects in Banach spaces and Banach algebras. Our results are provided by applying the fixed point theory (Itoh's random fixed point theorem, the nonlinear alternative of Schaefer's type proved by Dhage, and an other Dhage's random fixed point...

article

Crystal plasticity algorithm based on the quasi‐extremal energy principle

Henryk Petryk, Michal Kursa

International Journal for Numerical Methods in Engineering > 123 > 14 > 3285 - 3316

The direct incremental energy minimization in rate‐independent plasticity does not account for the skew‐symmetric part of the tangent stiffness matrix. In crystal plasticity, this corresponds to neglecting the asymmetry of the matrix of interaction moduli for active slip‐systems. This limitation has been overcome in the recently proposed quasi‐extremal energy principle (QEP) applicable to nonpotential...

article

Exploring New Insights Into Explicit and Implicit Second Language Processing: Event‐Related Potentials Analyzed by Source Attribution

Kara Morgan‐Short, Irene Finestrat, Alicia Luque, David Abugaber

Language Learning > 72 > 2 > 365 - 411

In this exploratory study, we considered the method of combining event‐related potentials (ERPs) and source attributions as a means for examining the explicit or implicit nature of second language (L2) knowledge and processing. We recorded electroencephalograms while L2 Spanish participants judged phrase structure and subject‐verb agreement sentences and provided source attributions—guess, intuition,...

article

Efficient co‐solution of time step size and independent state in simulations of fluid‐driven fracture propagation with embedded meshes

Guotong Ren, Rami M. Younis

International Journal for Numerical Methods in Engineering > 123 > 10 > 2262 - 2289

We present an efficient time‐continuation scheme for fluid‐driven fracture propagation problems in the extended finite element method framework. The approach applies a monolithic solution strategy to a fully coupled and implicit approximation of hydro‐mechanical systems in conjunction with simultaneous linear elastic propagation of multiple fractures. At the end of each time step, the process ensures...

article

A moving morphable component‐based topology optimization approach considering transient structural dynamic responses

Jialin Li, Youwei Zhang, Zongliang Du, Chang Liu, more

International Journal for Numerical Methods in Engineering > 123 > 3 > 705 - 728

A novel approach is developed under the moving morphable component (MMC) framework to solve topology optimization problems considering transient structural dynamic responses, where the structure for optimization is constructed with a collection of structural components, and the structural layout can be described explicitly via only a small number of design variables characterizing the positions and...

article

A direction splitting scheme for Navier–Stokes–Boussinesq system in spherical shell geometries

Aziz Takhirov, Roman Frolov, Peter Minev

International Journal for Numerical Methods in Fluids > 93 > 12 > 3507 - 3523

This article introduces a second‐order direction splitting method for solving the incompressible Navier–Stokes–Boussinesq system in a spherical shell region. The equations are solved on overset Yin–Yang grids, combined with spherical coordinate transforms. This approach allows to avoid the singularities at the poles and keeps the grid size relatively uniform. The downside is that the spherical shell...

article

Methods matter: Your measures of explicit and implicit processes in visuomotor adaptation affect your results

Jana Maresch, Susen Werner, Opher Donchin

European Journal of Neuroscience > 53 > 2 > 504 - 518

Visuomotor rotations are frequently used to study the different processes underlying motor adaptation. Explicit aiming strategies and implicit recalibration are two of these processes. Various methods, which differ in their underlying assumptions, have been used to dissociate the two processes. Direct methods, such as verbal reports, assume explicit knowledge to be verbalizable, where indirect methods,...

article

A nonsmooth frictional contact formulation for multibody system dynamics

Javier Galvez, Federico J. Cavalieri, Alejandro Cosimo, Olivier Brüls, more

International Journal for Numerical Methods in Engineering > 121 > 16 > 3584 - 3609

We present a new node‐to‐face frictional contact element for the simulation of the nonsmooth dynamics of systems composed of rigid and flexible bodies connected by kinematic joints. The equations of motion are integrated using a nonsmooth generalized‐α time integration scheme and the frictional contact problem is formulated using a mixed approach, based on an augmented Lagrangian technique and a Coulomb...

article

A dual‐process exploration of binge drinking: Evidence through behavioral and electrophysiological findings

Séverine Lannoy, Valérie Dormal, Joël Billieux, Mélanie Brion, more

Addiction Biology > 25 > 2 > n/a - n/a

The dual‐process model, describing addictive disorders as resulting from an imbalance between increased automatic approach behaviors towards the substance and reduced abilities to control these behaviors, constitutes a sound theoretical framework to understand alcohol‐use disorders. The present study aimed at exploring this imbalance at behavioral and cerebral levels in binge drinking, a pattern of...

article

Existence and Ulam stability for implicit fractional q-difference equations

Saïd Abbas, Mouffak Benchohra, Nadjet Laledj, Yong Zhou

Advances in Difference Equations > 2019 > 2019 > 1 > 1-12

This paper deals with some existence, uniqueness and Ulam–Hyers–Rassias stability results for a class of implicit fractional q-difference equations. Some applications are made of some fixed point theorems in Banach spaces for the existence and uniqueness of solutions, next we prove that our problem is generalized Ulam–Hyers–Rassias stable. Two illustrative examples are given in the last section.

article

Structure‐preserving space‐time discretization of a mixed formulation for quasi‐incompressible large strain elasticity in principal stretches

Alexander Janz, Peter Betsch, Marlon Franke

International Journal for Numerical Methods in Engineering > 120 > 13 > 1381 - 1410

In this paper, we propose an energy and momentum consistent time‐stepping scheme for nonlinear elastodynamics. The algorithm is based on a mixed Hu‐Washizu–type variational principle that is inspired by the concept of polyconvexity and relies on a tensor cross product of second‐order tensors. In addition, we introduce a new algorithmic stress formula in its eigenvalue representation to model the transient...

article

Assessing the Relationship Between Implicit and Explicit Evaluations of Fruit and Vegetable Consumption by Cancer Survivors

Jessica Maras, Ashley B. Murray, Debra Boardley, Emily Wasshenova, more

International Journal of Behavioral Medicine > 2019 > 26 > 4 > 365-371

Background Currently, little is known about the implicit evaluations that cancer survivors have for health behaviors, such as eating fruits and vegetables. Understanding both the implicit and explicit evaluations of fruit and vegetable consumption among cancer survivors may aid future interventions for changing motivations and intentions in this higher risk population. Methods A cross-sectional...

article

Modelling human cognition of abnormal machine behaviour

Prasanna Illankoon, Phillip Tretten, Uday Kumar

Human-Intelligent Systems Integration > 2019 > 1 > 1 > 3-26

Despite the advances in intelligent systems, there is no guarantee that those systems will always behave normally. Machine abnormalities, unusual responses to controls or false alarms, are still common; therefore, a better understanding of how humans learn and respond to abnormal machine behaviour is essential. Human cognition has been researched in many domains. Numerous theories such as utility...

article

Sleep and Event Cued Prospective Memory: Exploring the Role of Cue Encodings

Naveen Kashyap

Sleep and Vigilance > 2019 > 3 > 1 > 17-24

Recent work suggests that sleep modulates different forms of memory reorganization. Cue-action pairing, which is central to prospective memory, is influenced by various factors like time delay between cue learning and prospective memory performance and the characteristics of the cue. The present paper aims at testing whether post-learning sleep modulates prospective memory performance. Another objective...

article

Behaviors speak louder than explicit reports: Implicit metacognition in 2.5‐year‐old children

Marie Geurten, Christine Bastin

Developmental Science > 22 > 2 > n/a - n/a

Recent research has shown that children as young as age 3.5 show behavioral responses to uncertainty although they are not able to report it explicitly. In this study, we tested the hypothesis that some form of metacognition is already available to guide children's decisions before the age of 3. Two groups of 2.5‐ and 3.5‐year‐old children were asked to complete a forced‐choice perceptual identification...

article

Career Stereotypes and Identities: Implicit Beliefs and Major Choice for College Women and Men in STEM and Female-Dominated Fields

Sarah T. Dunlap, Joan M. Barth

Sex Roles > 2019 > 81 > 9-10 > 548-560

The present study examines the gendered nature of implicitly held beliefs related to STEM careers. It tests predictions from balanced identity theory on the relations between implicit STEM gender stereotypes and implicit STEM identity, as well as predictions from the associative-propositional model related to exposure to counter-stereotypical exemplars in a sample of U.S. college-aged heterosexual...

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Search results

Development of three dimensional transient numerical heat conduction model with growth of oxide scale for steel billet reheat simulation

Assessment of implicit adaptive mesh‐free CFD modelling

Hedonic plasticity of vegan burger patty in implicit or explicit reference frame conditions

Adaptively implicit MPDATA advection for arbitrary Courant numbers and meshes

On implicit fractional q‐difference equations: Analysis and stability

Crystal plasticity algorithm based on the quasi‐extremal energy principle

Exploring New Insights Into Explicit and Implicit Second Language Processing: Event‐Related Potentials Analyzed by Source Attribution

Efficient co‐solution of time step size and independent state in simulations of fluid‐driven fracture propagation with embedded meshes

A moving morphable component‐based topology optimization approach considering transient structural dynamic responses

A direction splitting scheme for Navier–Stokes–Boussinesq system in spherical shell geometries

Methods matter: Your measures of explicit and implicit processes in visuomotor adaptation affect your results

A nonsmooth frictional contact formulation for multibody system dynamics

A dual‐process exploration of binge drinking: Evidence through behavioral and electrophysiological findings

Existence and Ulam stability for implicit fractional q-difference equations

Structure‐preserving space‐time discretization of a mixed formulation for quasi‐incompressible large strain elasticity in principal stretches

Assessing the Relationship Between Implicit and Explicit Evaluations of Fruit and Vegetable Consumption by Cancer Survivors

Modelling human cognition of abnormal machine behaviour

Sleep and Event Cued Prospective Memory: Exploring the Role of Cue Encodings

Behaviors speak louder than explicit reports: Implicit metacognition in 2.5‐year‐old children

Career Stereotypes and Identities: Implicit Beliefs and Major Choice for College Women and Men in STEM and Female-Dominated Fields

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