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Subjective surfaces: A method for completing missing boundaries
2000
Proceedings of the National Academy of Sciences of the United States of America
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We present a model and algorithm for segmentation of images with missing boundaries. ...
Completion models, which postulate how to construct missing data, are popular, but are often trained and specific to particular images. ...
In this paper we propose a method for segmentation of images with missing boundaries. ...
doi:10.1073/pnas.110135797
pmid:10823902
pmcid:PMC18589
fatcat:jxlvafvxarerxfjjcohshto2yi
Nanobeams and AFM Subject to Piezoelectric and Surface Scale Effects
2018
Advances in Mathematical Physics
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The modeling equations with piezoelectric and surface scale effects are written as a matrix differential equation subject to tip-sample general boundary conditions and to compatibility conditions for the ...
Simulations were performed for a two stepped beam with a piezoelectric patch subject to pulse forcing terms. ...
Acknowledgments This work was performed as part of the employment of the authors at their institutions and the third author held a fellowship no. 140823/2014-0 from CNPq of Brazil. ...
doi:10.1155/2018/9268973
fatcat:wlbrcx3fc5gutfku3fooopoea4
Effect of Surface Roughness and Temperature on EHL for Parallel Surfaces Subjected to High Acceleration
2014
Tribology in Industry
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the applicability of the model chosen for solution. ...
The lubrication solution proposed is a modification of "Numerical model for mixed lubrication" presented in 1990s. Present research is an extension of author's previous work in the same. ...
Acknowledgement The Author would like to thank faculty of Mechanical Engineering of NUST College of Electrical and Mechanical Engineering for the material and technical support offered during the completion ...
doaj:abbff035e6f3401fbfdd5689859b6a6d
fatcat:s44dqc6nezhlxmqkebssvw2pcm
Macrophage Image Segmentation by Thresholding and Subjective Surface Method
2020
Tatra Mountains Mathematical Publications
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The first one is based on the Otsu thresholding and the second one on the information entropy thresholding, both followed by the classical subjective surface (SUBSURF) method. ...
The automatic approach is a combination of thresholding and the classical subjective surface segmentation (SUBSURF) method. ...
On the other hand, the SUBSURF method can effectively complete missing parts of boundary, join adjacent level-lines, as well as rapidly remove a noise. ...
doi:10.2478/tmmp-2020-0007
fatcat:yscrolvnznczzbps3xm3xg5gyq
Improving the crashworthiness characteristics of cylindrical tubes subjected to axial compression by cutting wide grooves from their outer surface
2009
International Journal of Crashworthiness
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This paper investigates a new and efficient design method to encourage axisymmetric collapsing mode in tubes with higher length than the critical length to collapse in concertina mode when subjected to ...
An analytical model to predict mean crush force of the new shock absorber is also developed in the present study. ...
On the other hand, while diamond and mixed modes are considerably more likely to occur than other collapsing modes for a common dimension of tube, little changes in loading and boundary conditions can ...
doi:10.1080/13588260902896466
fatcat:ktkylgsmszeb5grmxupkfxeyaq
An inclined surface crack subject to biaxial loading
2011
International Journal of Solids and Structures
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The elastic-plastic stress fields and mode mixity parameters for semi-elliptical surface cracks on biaxial loaded plates have been investigated using detailed three-dimensional finite element calculations ...
These analyses were performed for different surface flaw geometries to study the combined load biaxiality and mode mixity effects on the crack-front stress fields and the size and shape of the plastic ...
surface flaws is far from complete. ...
doi:10.1016/j.ijsolstr.2011.02.024
fatcat:jw3rl3fqmzgankydwy4rqx2ute
Large eddy simulation of LDL surface concentration in a subject specific human aorta
2012
Journal of Biomechanics
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The goal of this study was to model blood flow within a subject specific human aorta, and to study how the LDL surface concentration changed during a cardiac cycle. ...
With measured velocity profiles as boundary conditions, a scale-resolving technique (large eddy simulation, LES) was used to compute the pulsatile blood flow that was in the transitional regime. ...
As a wall-free model was used in the simulations, a boundary condition which allows for mass transfer through the wall was set on the arterial surface. ...
doi:10.1016/j.jbiomech.2011.11.039
pmid:22153749
fatcat:vuunfmkjo5b6tedk4vlfejj2qi
Numerical Simulations of Exposed Circular Surface of Rolled Homogeneous Armor Steel Plates Subjected to Blast Loadings by Using AUTODYN 2D
2015
Modern Applied Science
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Three main geometrical parts namely; air, trinitrotoluene and rolled homogeneous armour steel plate are modelled in AUTODYN 2D utilising the LAGRANGE and EULER element formulations' solvers. ...
to the experimental results from a published paper. ...
The simulations' steps that will be presented in this section include geometric modelling of air, spherical TNT, exposed circular surface of RHA plate; meshing, assigning the appropriate material properties ...
doi:10.5539/mas.v9n3p216
fatcat:ry5jflj7drgglmuxwlinv7e7nq
Stress Intensity Factors for Embedded, Surface, and Corner Cracks in Finite-Thickness Plates Subjected to Tensile Loading
2021
Materials
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, for different crack geometries (relative depths and aspect ratios) and crack configurations (embedded, surface, and corner). ...
The aim of this study is to obtain the stress intensity factor (SIF) along the crack front of elliptical cracks located in finite-thickness plates subjected to imposed displacement or applied tensile load ...
For surface and corner configurations, the existence of a boundary layer is observed: a small part of the crack front at the intersection with the plate outer surface (point B for the surface crack, points ...
doi:10.3390/ma14112807
pmid:34070350
fatcat:n7buhztk3rek3jvwac77lzacru
Acoustic fields and microfluidic patterning around embedded micro-structures subject to surface acoustic waves
2019
Soft Matter
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Recent research has shown that interactions between acoustic waves and microfluidic channels can generate microscale interference patterns with the application of a traveling surface acoustic wave (SAW ...
To build a more complete understanding of channel interface effects on the surrounding acoustic field, in this work we develop generalized acoustic interaction models for channel interfaces subject to ...
for predicting interference patterns near channel features subject to a travelling SAW. ...
doi:10.1039/c9sm00946a
fatcat:dac435lbl5gi7p5wfd2gcvfoju
Boundary friction characterisation of a used cylinder liner subject to fired engine conditions and surface deposition
2019
Tribology International
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Acknowledgement The authors of this work wish to show their thanks to the Engineering and Physical Sciences Research Council (EPSRC) and to our industrial collaborators AVL List GmbH for the financial ...
At TDC the compression ring is subject to higher contact pressures and boundary friction as a result of combustion. ...
The work carried out in this study uses a cylinder liner from a modern IC engine which has run for 105,000 miles under urban driving cycle with a fully formulated existing lubricant with a complete additive ...
doi:10.1016/j.triboint.2018.11.005
fatcat:m7ppdkswsbbp5o3vecdsn2b64m
Thermal induced motion of functionally graded beams subjected to surface heating
2018
Ain Shams Engineering Journal
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Thin beam of the functionally graded (FG) type subjected to a step heat input on one surface and insulated or exposed to convective heat loss on the opposite surface is under consideration for the evaluation ...
It is found that attenuation of the amplitude of static thermal deflection and superimposed thermal oscillations is a strong function of the metal-ceramic combination for the FG beam. ...
The aim of this article was to have detailed investigation on the thermal induced vibration of a FG beam when subjected to a step thermal load for various structural boundary conditions. ...
doi:10.1016/j.asej.2015.10.010
fatcat:ngtqokiznzbyvazje4sivhnn5m
Left ventricular volume and endocardial surface area by three-dimensional echocardiography: Comparison with two-dimensional echocardiography and nuclear magnetic resonance imaging in normal subjects
1993
Journal of the American College of Cardiology
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We evaluated a threemdi e~io~al echocardiographic method for ventricular volume and surface area determim nation that uses polyhedral surface reconstruction. ...
Cineangiography has several limitations, the most important of which is a requirement far geometric . ...
The in vitro model used to validate the three-dimensional echocardiographic method for total endocardial surface area and infarct surface area was a pin model, in which pinheads mounted in three parallel ...
doi:10.1016/0735-1097(93)90842-o
pmid:8509549
fatcat:rhdlzabwe5boxblkvmulchte5u
Water at solid surfaces: A review of selected theoretical aspects and experiments on the subject
2007
Biointerphases
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Despite the considerable amount of work, the way water molecules are organized at the interface is still a source of debate. ...
Grunze is gratefully acknowledged for fundamental advice and suggestions on how to organize the present work. Professor A. J. Pertsin, Dr. M Himmelhaus, Dr. R. Steitz, Professor R. Netz, Professor E. ...
Shen are acknowledged for the useful discussions. ...
doi:10.1116/1.2768902
pmid:20408643
fatcat:5adndss6vfa3pfy5yhls6yotfu
Effect of grain sorting on gravel bed river evolution subject to cycled hydrographs: Bed load sheets and breakdown of the hydrograph boundary layer
2017
Journal of Geophysical Research - Earth Surface
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In this paper, we implement a 1-D morphodynamic model for this problem. The model is first validated with data for both flume experiments and numerical simulations. ...
by a hydrograph boundary layer (HBL) located near the upstream end of the river. ...
for problems with long length scales, the morphological model approaches a parabolic model for uniform sediment and a mixed parabolic/simple wave model for sediment mixtures. ...
doi:10.1002/2016jf003994
fatcat:megy4olaizh7faketmwmlcxclu
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