Evolutionary Method for Two-dimensional Associative Local Distribution Rule Mining

2021 ◽  
Author(s):  
Kaoru Shimada ◽  
Takaaki Arahira ◽  
Shogo Matsuno
Keyword(s):  
Two Dimensional ◽  
Local Distribution ◽  
Rule Mining ◽  
Evolutionary Method ◽  
Distribution Rule

Simulation Study on the Characteristics of Flow Field in the Process of Wave Impact

2012 ◽  
Vol 212-213 ◽  
pp. 1172-1176
Author(s):  
Jin Feng
Keyword(s):  
Experimental Data ◽  
Free Surface ◽  
Flow Field ◽  
Simulation Study ◽  
Numerical Models ◽  
Two Dimensional ◽  
Regular Wave ◽  
Wave Impact ◽  
Distribution Rule ◽  
Wave Slamming

In order to study the characteristics of flow field in the process of wave impact, two-dimensional regular wave numerical models were established based on the software FLUENT. RANS equations were adopted. The standard equations were used to close the Reynolds equations. VOF method was used to reconstruct the free surface. After three typical cases of wave slamming on open-piled structures were reproduced, the models were verified by experimental data and the flow field surrounding the structure was displayed visually. Then the processes of wave impact under various wave height, period and over height were simulated. The influences of the three parameters on the distribution of vertical velocities were analyzed, which shows that the distribution rule of the vertical velocities is similar to the wave impact pressures.

scholarly journals Depth-hoar growth rates near a rocky outcrop

1998 ◽  
Vol 44 (148) ◽  
pp. 477-484 ◽  
Author(s):  
E. M. Arons ◽  
S. C. Colbeck ◽  
J. M. N.T. Gray
Keyword(s):  
Crystal Growth ◽  
Snow Depth ◽  
Late Winter ◽  
Spatial Distributions ◽  
Two Dimensional ◽  
Local Distribution ◽  
Snow Properties ◽  
Rocky Outcrop ◽  
Rocky Outcrops ◽  
Growth From Vapor

Abstract Observations of slab-avalanche releases in alpine terrain have led to the hypothesis that rocky outcrops can influence the spatial distributions of temperature and heal flow in dry alpine snow covers and Unis control the local distribution of depth hoar. We investigate the effects of terrain on crystal growth by using a two-dimensional finite-clemcnl model of heal How coupled with a model of crystal growth from vapor. We used the model to examine the influence of snow properties, terrain geometry and snow depth on this phenomenon. The efleel is stronger in the early winter than in the late winter, because the rock has then had time to cool. In all cases, we found that depth-hoar growth occurs preferentially over the rock. This suggests that snow-pit investigations made over soil can he misleading if rocky outcrops are present.

scholarly journals Depth-hoar growth rates near a rocky outcrop

1998 ◽  
Vol 44 (148) ◽  
pp. 477-484
Author(s):  
E. M. Arons ◽  
S. C. Colbeck ◽  
J. M. N.T. Gray
Keyword(s):  
Crystal Growth ◽  
Snow Depth ◽  
Late Winter ◽  
Spatial Distributions ◽  
Two Dimensional ◽  
Local Distribution ◽  
Snow Properties ◽  
Rocky Outcrop ◽  
Rocky Outcrops ◽  
Growth From Vapor

AbstractObservations of slab-avalanche releases in alpine terrain have led to the hypothesis that rocky outcrops can influence the spatial distributions of temperature and heal flow in dry alpine snow covers and Unis control the local distribution of depth hoar. We investigate the effects of terrain on crystal growth by using a two-dimensional finite-clemcnl model of heal How coupled with a model of crystal growth from vapor. We used the model to examine the influence of snow properties, terrain geometry and snow depth on this phenomenon. The efleel is stronger in the early winter than in the late winter, because the rock has then had time to cool. In all cases, we found that depth-hoar growth occurs preferentially over the rock. This suggests that snow-pit investigations made over soil can he misleading if rocky outcrops are present.

Two-Dimensional Sine Filter Fingerprint Enhancement Algorithm Based on Block Level

2011 ◽  
Vol 88-89 ◽  
pp. 596-603
Author(s):  
Xiao Si Zhan ◽  
Ya Yun Chu
Keyword(s):  
Image Enhancement ◽  
Identification System ◽  
Surface Model ◽  
Two Dimensional ◽  
Fingerprint Image ◽  
Fingerprint Enhancement ◽  
Distribution Rule ◽  
Fingerprint Image Enhancement ◽  
Sinusoidal Surface ◽  
Enhancement Algorithm

Enhancing low-quality fingerprint image is the effective method for improving the accuracy of minutia extraction and performance of the automatic fingerprint identification system. Fingerprint image is one kind of regular texture image in nature. To design two-dimensional sinusoidal surface model which accorded with the ridge gray distribution rule and propose the fingerprint image enhancement algorithm based on the two-dimensional sinusoidal surface model after analyzing the basic character of the fingerprint image. The experimental results indicate that the fingerprint image enhancement algorithm has better connecting ability for the broken ridges than the Gabor fingerprint enhancement algorithm. The algorithm can improve effectively the fingerprint image enhancement result and the accuracy of the minutiae extraction.

Spectrophotometric measurements of objective-prism spectra

1966 ◽  
Vol 24 ◽  
pp. 118-119
Author(s):  
Th. Schmidt-Kaler
Keyword(s):  
Progress Report ◽  
Two Dimensional ◽  
Objective Prism ◽  
Made In

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.

Introductory paper

1966 ◽  
Vol 24 ◽  
pp. 3-5
Author(s):  
W. W. Morgan
Keyword(s):  
Line Intensity ◽  
Classification Scheme ◽  
Two Dimensional ◽  
Spectral Classification ◽  
Dimensional Array ◽  
Rr Lyrae ◽  
Metallic Line ◽  
Introductory Paper ◽  
Parameter Varying ◽  
Definition Of

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.

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