The moment theory for Gross-coupling of two intense fields through a kerr medium

1989 ◽  
Author(s):  
J. Teichmann ◽  
F. P. Mattar
Keyword(s):  
Kerr Medium ◽  
Moment Theory ◽  
Intense Fields ◽  
The Moment

scholarly journals On Perturbation Solutions for Axisymmetric Bending Boundary Values of a Deep Thin Spherical Shell

2014 ◽  
Vol 2014 ◽  
pp. 1-12
Author(s):  
Rong Xiao ◽  
Danhui Dan ◽  
Wei Cheng
Keyword(s):  
Spherical Shell ◽  
Nonlinear Response ◽  
Fundamental Equation ◽  
Expansion Method ◽  
External Pressure ◽  
Displacement Component ◽  
Moment Theory ◽  
Axisymmetric Bending ◽  
Thin Spherical Shell ◽  
The Moment

On the basis of the general theory of elastic thin shells and the Kirchhoff-Love hypothesis, a fundamental equation for a thin shell under the moment theory is established. In this study, the author derives Reissner’s equation with a transverse shear forceQ1and the displacement componentw. These basic unknown quantities are derived considering the axisymmetry of the deep, thin spherical shell and manage to constitute a boundary value question of axisymmetric bending of the deep thin spherical shell under boundary conditions. The asymptotic solution is obtained by the composite expansion method. At the end of this paper, to prove the correctness and accuracy of the derivation, an example is given to compare the numerical solution by ANSYS and the perturbation solution. Meanwhile, the effects of material and geometric parameters on the nonlinear response of axisymmetric deep thin spherical shell under uniform external pressure are also analyzed in this paper.

scholarly journals Metode Moment Invariant Geometrik untuk Menganalisis Jenis Daging Babi dan Daging Sapi

2018 ◽  
Vol 8 (2) ◽  
pp. 181
Author(s):  
Oky Dwi Nurhayati ◽  
Isti Pudji Hastuti
Keyword(s):  
Image Processing ◽  
Processing Method ◽  
The Other ◽  
Moment Theory ◽  
Moment Invariant ◽  
Image Processing Techniques ◽  
Image Processing Method ◽  
A Value ◽  
The Moment ◽  
Processing Techniques

Beef needs have increased every year. So as the need for expensive beef even at certain times tends to rise. This is used by cheat seller to mix beef with pork because pork is relatively cheaper. This is very detrimental to consumers. Visually, many peoples (consumers) couldn’t distinguish these two types of meat. Hence, we conduct research to distinguish both types of meat.  One way to overcome these problems is the use of complete image processing techniques. The aim of this research was establised an application prototype to distinguish beef and pork with image processing techniques. Image processing method is used to distinguish the types of meat done by pre-processing, segmentation, feature extraction with geometrical moment invariant and K-NN classification. Geometric moment invariant method proposed to analyze beef and pork is done by extracting unique values from each images. This method can be used as a description of the form based on the moment theory. The results showed that the image processing method and K-NN classification with a value of k = 3 used in the research could significantly  used to analyze the type of meat namely beef and pork. The other difference can be shown from the phi moment invariant value, especially the value of phi (1) and phi (2) 

A Sub-Pixel Edge Detection Method Combining the Interpolation with the Moment Theory

2013 ◽  
Vol 475-476 ◽  
pp. 351-354
Author(s):  
Ya Zhou Zhou ◽  
Qiu Cheng Sun ◽  
Hao Chen
Keyword(s):  
Image Processing ◽  
Edge Detection ◽  
Detection Method ◽  
Detection Accuracy ◽  
Gray Level ◽  
Two Dimensional ◽  
Moment Theory ◽  
One Dimensional ◽  
Edge Detection Method ◽  
The Moment

A new sub-pixel edge detection method is proposed to improve the detection accuracy. Firstly, using the theory of interpolation to acquire the continuous gray level distribution in one-dimensional .Therefore, the location of edge is determined. Secondly, in view of the two-dimensional edge detection, the moment spatial is taken into account. At last, the two-dimensional edge detection simplified as one-dimensional. From the test ,its known that the accuracy of the this algorithm is higher, especially for images with noise. So, the proposed algorithm has good applicability in image processing.

ПРИНЦИП ВОЗМОЖНЫХ ПЕРЕМЕЩЕНИЙ В МОМЕНТНОМЕМБРАННОЙ ДИНАМИЧЕСКОЙ ТЕОРИИ УПРУГИХ ТОНКИХ ОБОЛОЧЕК / The Principle of Possible Displacments in the Moment-Membrane Dynamic Theory of Elastic Thin Shells

2021 ◽  
pp. 10-19
Author(s):  
S. Sargsyan
Keyword(s):  
Boundary Value Problem ◽  
Dynamic Theory ◽  
Three Dimensional ◽  
Theory Of Elasticity ◽  
Thin Shells ◽  
Moment Theory ◽  
Thin Region ◽  
Membrane Dynamic ◽  
Dimensional Boundary ◽  
The Moment

В работе излагается моментно-мембранная динамическая теория упругих тонких оболочек на основе метода гипотез, который соответствует качественной стороне результата интегрирования трехмерной граничной задачи моментной теории упругости в тонкой области оболочки. На основе принципа возможных перемещений трехмерной моментной динамической теории упругости с независимыми полями перемещений и вращений и основных соотношений моментномембранной динамической теории упругих тонких оболочек, устанавливается принцип возможных перемещений для моментномембранной динамической теории упругих тонких оболочек./ In the present paper the moment-membrane dynamic theory of elastic thin shells is presented based on the hypotheses method, which corresponds to the qualitative side of the result of integration of the three-dimensional boundary-value problem of the moment theory of elasticity in a thin region of the shell. On the basis of the principle of possible displacements of the threedimensional moment dynamic theory of elasticity with independent fields of displacements and rotations and the basic relations of the moment-membrane dynamic theory of elastic thin shells, the principle of possible displacements for the moment-membrane dynamic theory of elastic thin shells is established.

A universal asymptotic algorithm for elastic thin shells

2000 ◽  
Vol 11 (6) ◽  
pp. 573-594 ◽  
Author(s):  
A. G. ASLANYAN ◽  
A. B. MOVCHAN ◽  
Ö. SELSIL
Keyword(s):  
Boundary Value Problem ◽  
Eigenvalue Problems ◽  
Boundary Value ◽  
Thin Shells ◽  
Membrane Theory ◽  
Moment Theory ◽  
Elastic Shells ◽  
Thin Region ◽  
The Moment

This work presents an asymptotic algorithm for the derivation of equations of thin elastic shells. The algorithm is based on the analysis of a boundary value problem for the Navier system in a thin region. The analysis covers both the membrane theory and the moment theory of elastic shells, including the eigenvalue problems.

A Three-Dimensional Model of Surface Asperities Developed Using Moment Theory

1982 ◽  
Vol 104 (4) ◽  
pp. 343-348 ◽  
Author(s):  
W. R. DeVries
Keyword(s):  
Three Dimensional ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Moment Theory ◽  
Composite Surface ◽  
Locus Equation ◽  
Asperity Model ◽  
The Moment

Methods are presented to construct a three-dimensional model of a composite surface asperity based on profile measurements taken in different directions. The theory used to accomplish this is based on least squares estimation to find a locus equation for the moment properties measured experimentally in five directions. The asperity model is developed based on this locus of moment properties of height and slope, which are used to interpolate in different directions to generate the base and sides of an asperity. Two examples are used to show how these techniques can be used. One is a face milled cast iron surface and the other a surface ground specimen of low carbon steel.

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