Computer Simulation Based on Non-local Model of the Dynamics of Convective Diffusion of Soluble Substances in the Underground Filtration Flow under Mass Exchange Conditions

2019 ◽  
Vol 51 (5) ◽  
pp. 16-29
Author(s):  
Vsevolod A. Bohaienko ◽  
Vladimir M. Bulavatskiy
Keyword(s):  
Computer Simulation ◽  
Mass Exchange ◽  
Convective Diffusion ◽  
Local Model ◽  
Filtration Flow ◽  
Simulation Based ◽  
Non Local

On velocity selection for needle-crystals in a fully non-local model of solidification

1987 ◽  
Vol 48 (4) ◽  
pp. 547-552 ◽  
Author(s):  
B. Caroli ◽  
C. Caroli ◽  
C. Misbah ◽  
B. Roulet
Keyword(s):  
Local Model ◽  
Non Local ◽  
Selection For ◽  
Velocity Selection

Local and non-local damage model with extended stress decomposition for concrete

2021 ◽  
pp. 105678952199872
Author(s):  
Bilal Ahmed ◽  
George Z Voyiadjis ◽  
Taehyo Park
Keyword(s):  
Shear Stress ◽  
Degrees Of Freedom ◽  
Biaxial Loading ◽  
Damage Model ◽  
Local Model ◽  
Uniaxial Tensile ◽  
Gradient Theory ◽  
Principal Stresses ◽  
Stress Decomposition ◽  
Non Local

In this work, a new damage model for concrete is proposed with an extension of the stress decomposition (limited to biaxial cases), to capture shear damage due to the opposite signed principal stresses. To extract the pure shear stress, the assumption is made that one component of the shear stress is a minimum absolute of the two principal stresses. The opposite signed principal stresses are decomposed into shear stress and uniaxial tensile/compressive stress. A local model is implemented in Abaqus UMAT and it is further extended to a non-local model by utilization of the gradient theory. The concept of three length scales (tension, compression, and shear) is kept the same as the recently proposed nonlocal damage model by the authors. The nonlocal model is implemented in the Abaqus UEL-UMAT subroutine with an eight-node quadrilateral user-defined element, having five degrees of freedom at corner nodes (displacement in X/Y direction and tensile/compressive and shear nonlocal equivalent strain) and two degrees of freedom at internal nodes. Some examples of a local model including uniaxial and biaxial loading are addressed. Also, five examples of mixed crack mode and mode-I cracking are presented to comprehensively show the performance of this model.

A non-local model to analyse 2D and 3D microbuckling of long carbon fibre epoxy material

2021 ◽  
pp. 114531
Author(s):  
Jean-Claude Grandidier ◽  
Anil Bettadahalli Channakeshava ◽  
Roberta Mazziotta
Keyword(s):  
Carbon Fibre ◽  
Local Model ◽  
Epoxy Material ◽  
Non Local ◽  
2D And 3D

scholarly journals Nursing Students’ Experiences with Computer Simulation-Based Communication Education

2021 ◽  
Vol 18 (6) ◽  
pp. 3108
Author(s):  
Ujin Lee ◽  
Heeseung Choi ◽  
Yeseul Jeon
Keyword(s):  
Computer Simulation ◽  
Nursing Education ◽  
Nursing Students ◽  
Communication Patterns ◽  
Mixed Method Research ◽  
Communication Education ◽  
Therapeutic Communication ◽  
Clinical Practicum ◽  
Content Analysis Method ◽  
Simulation Based

Simulation-based communication education has improved nursing students’ communication knowledge and skills. However, communication patterns that students commonly exhibit in simulated situations and students’ responses to specific clinical situations have not been systematically examined. The specific aims of the present study were (1) to identify non-therapeutic communication patterns that nursing students exhibit in simulated situations in the computer simulation-based education (ComEd) program, and (2) explore students’ responses to challenging clinical situations. This study used a mixed-method research design and a convenience sampling method to recruit participants. Frequency analysis and a conventional content analysis method were used to analyze answers provided by participants. A total of 66 students from four Korean nursing schools participated in the study. “False reassurance” was found to be the most common non-therapeutic communication pattern used by nursing students. Nursing students had difficulty in clinical situations such as reporting a patient’s condition to a doctor, communicating with a patient and perform basic nursing skills at the same time, and managing conflicts between patients. Technology-based communication simulation programs, which reflect various clinical situations, are considered a new alternative that can supplement the limitations of clinical practicum and improve the quality of nursing education.

Does Science have to be Causal in Order to be Science? Reflections on Nina Azari's Questions

2009 ◽  
Vol 31 (3) ◽  
pp. 315-318
Author(s):  
Harald Walach
Keyword(s):  
Local Model ◽  
Non Local

Nina Azari in her commentary on our article in this issue “Spirituality: The Legacy of Parapsychology” has raised the issue of what it actually takes for something to be called science. Does causality come into the picture? If so, how does causality relate to our non-local model that seems to explicitly eschew the question of causality? The answer lies in what one is willing to accept as causality. If causality can be conceived broader than just efficient-mechanistic causality then certainly our model is causal. If one insists on efficient-mechanistic causality as the only and truly scientific notion of causality, it is not. But then, I would argue, this is a very restricted and also short sighted view which should be questioned, and eventually, disregarded. This is what we have set out to do.

Non-Local Model Analysis of Heat Pulse Propagation and Simulation of Experiments in W7-AS

1999 ◽  
Vol 68 (2) ◽  
pp. 478-486 ◽  
Author(s):  
Takuya Iwasaki ◽  
Sanae-I. Itoh ◽  
Masatoshi Yagi ◽  
Kimitaka Itoh ◽  
Ulich Stroth
Keyword(s):  
Pulse Propagation ◽  
Model Analysis ◽  
Heat Pulse ◽  
Local Model ◽  
Non Local

Computer simulation-based method to predict packing density of aggregates mixture

2018 ◽  
Vol 29 (2) ◽  
pp. 386-398 ◽  
Author(s):  
Mohammad Reisi ◽  
Davood Mostofinejad ◽  
Ali Akbar Ramezanianpour
Keyword(s):  
Computer Simulation ◽  
Packing Density ◽  
Simulation Based
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