Identification of polymers by libs using methods of correlation and normalized coordinates

2010 ◽  
Vol 29 (8) ◽  
pp. 1057-1064 ◽  
Author(s):  
R.J. Lasheras ◽  
C. Bello-Gálvez ◽  
J. Anzano
Keyword(s):  
Normalized Coordinates

Discrimination of organic solid materials by LIBS using methods of correlation and normalized coordinates

2011 ◽  
Vol 192 (2) ◽  
pp. 704-713 ◽  
Author(s):  
R.J. Lasheras ◽  
C. Bello-Gálvez ◽  
E.M. Rodríguez-Celis ◽  
J. Anzano
Keyword(s):  
Solid Materials ◽  
Organic Solid ◽  
Normalized Coordinates

Influence of Combined Mean Stresses on Lifetime under High-Cycle Fatigue

2015 ◽  
Vol 732 ◽  
pp. 107-110 ◽  
Author(s):  
Jaromír Janoušek ◽  
Miroslav Balda ◽  
Michal Chocholoušek
Keyword(s):  
High Cycle Fatigue ◽  
Three Dimensional ◽  
Cycle Fatigue ◽  
Low Carbon ◽  
Mean Stresses ◽  
Normalized Coordinates

This study builds on experiments with different combinations of tension and torsion pre-stresses which were published in [1]. The results were particularized by new tests for combined pre-stresses in normal and shear components. The ratio between normal and shear pre-stresses was 3:2 in agreement with the coefficient kc. The same material structural low carbon ČSN 41 1523.1 steel after normalization annealing was used for specimens. The results were compiled and displayed in a three-dimensional Haigh diagram with normalized coordinates and interlaid by corresponding terminal lines.

scholarly journals Using Depth-Normalized Coordinates to Examine Mass Transport Residual Circulation in Estuaries with Large Tidal Amplitude Relative to the Mean Depth

2014 ◽  
Vol 44 (1) ◽  
pp. 128-148 ◽  
Author(s):  
Sarah N. Giddings ◽  
Stephen G. Monismith ◽  
Derek A. Fong ◽  
Mark T. Stacey
Keyword(s):  
Mass Transport ◽  
Coordinate System ◽  
Vertical Mixing ◽  
Eof Analysis ◽  
Residual Circulation ◽  
Tidal Amplitude ◽  
Transport Velocity ◽  
The Mean ◽  
Σ Coordinate ◽  
Normalized Coordinates

Abstract Residual (subtidal) circulation profiles in estuaries with a large tidal amplitude-to-depth ratio often are quite complex and do not resemble the traditional estuarine gravitational circulation profile. This paper describes how a depth-normalized σ-coordinate system allows for a more physical interpretation of residual circulation profiles than does a fixed vertical coordinate system in an estuary with a tidal amplitude comparable to the mean depth. Depth-normalized coordinates permit the approximation of Lagrangian residuals, performance of empirical orthogonal function (EOF) analysis, estimation of terms in the along-stream momentum equations throughout depth, and computation of a tidally averaged momentum balance. The residual mass transport velocity has an enhanced two-layer exchange flow relative to an Eulerian mean because of the Stokes wave transport velocity directed upstream at all depths. While the observed σ-coordinate profiles resemble gravitational circulation, and pressure and friction are the dominant terms in the tidally varying and tidally averaged momentum equations, the two-layer shear velocity from an EOF analysis does not correlate with the along-stream density gradient. To directly compare to theoretical profiles, an extension of a pressure–friction balance in σ coordinates is solved. While the barotropic riverine residual matches theory, the mean longitudinal density gradient and mean vertical mixing cannot explain the magnitude of the observed two-layer shear residual. In addition, residual shear circulation in this system is strongly driven by asymmetries during the tidal cycle, particularly straining and advection of the salinity field, creating intratidal variation in stratification, vertical mixing, and shear.

COMPUTATIONALLY EFFICIENT TECHNIQUE FOR THE SOLUTION OF TIMOSHENKO BEAM AND MINDLIN-REISSNER PLATE PROBLEMS USING THE METHOD OF FINITE SPHERES

2006 ◽  
Vol 03 (04) ◽  
pp. 465-501 ◽  
Author(s):  
SULEIMAN BANIHANI ◽  
SUVRANU DE
Keyword(s):  
Genetic Algorithm ◽  
Timoshenko Beam ◽  
Lookup Table ◽  
Efficient Technique ◽  
Computational Time ◽  
Computationally Efficient ◽  
Reissner Plate ◽  
Finite Spheres ◽  
Shear Deformable ◽  
Normalized Coordinates

In this paper we discuss the application of the method of finite spheres (MFS) to the solution of shear deformable beam and plate problems. A computationally efficient technique is presented in which the integration points and weights are generated using a genetic algorithm and stored in a lookup table using normalized coordinates much like a table of Gauss integration points and weights. This technique offers a significant reduction of computational time while maintaining accuracy.

Libraries for spectrum identification: Method of normalized coordinates versus linear correlation

2008 ◽  
Vol 63 (3) ◽  
pp. 383-388 ◽  
Author(s):  
A. Ferrero ◽  
P. Lucena ◽  
R.G. Herrera ◽  
A. Doña ◽  
R. Fernández-Reyes ◽  
...  
Keyword(s):  
Linear Correlation ◽  
Identification Method ◽  
Normalized Coordinates
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