Expression Inference — Genetic Symbolic Classification Integrated with Non-linear Coefficient Optimisation

2002 ◽  
pp. 117-127 ◽  
Author(s):  
Andrew Hunter
Keyword(s):  
Linear Coefficient ◽  
Non Linear

The Effect of the SiC Content on Electrical Properties of SiC Anti-Corona Coating for Generator

2016 ◽  
Vol 868 ◽  
pp. 23-27
Author(s):  
Liang Liang Nie ◽  
Hang Zhou ◽  
Shi Di Tao ◽  
Yu Feng Li ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Surface Resistivity ◽  
Initial Surface ◽  
Mass Ratio ◽  
Linear Coefficient ◽  
Non Linear ◽  
Suitable Amount ◽  
Corona Structure

In this research, the anti-corona lacquer with different SiC content was fabricated. The surface resistivity of the lacquer at different voltage levels was measured, and the effect of the SiC content on electrical properties of SiC anti-corona coating was investigated. The results showed that the initial surface resistivity ρs decreased with increasing mass ratio of SiC to resin, while the non-linear coefficient β varied the opposite way. The surface resistivity was improved by adding suitable amount of graphite, which suited the requirements of multiple sections anti-corona structure.

Wavelength dependence of the third order non-linear coefficient in hydrothermally grown ZnO crystals

2004 ◽  
Vol 1 (4) ◽  
pp. 997-1000 ◽  
Author(s):  
A. Zappettini ◽  
F. D'Amore ◽  
S. M. Pietralunga ◽  
A. Terio ◽  
M. Martinelli ◽  
...  
Keyword(s):  
Wavelength Dependence ◽  
Third Order ◽  
Linear Coefficient ◽  
The Third ◽  
Non Linear

A study on Al 2219 alloy precipitate growth rates by non-linear ultrasonic technique

2020 ◽  
Vol 62 (11) ◽  
pp. 656-661
Author(s):  
Jun You ◽  
Yunxin Wu ◽  
Hai Gong
Keyword(s):  
Interaction Model ◽  
Model Alloy ◽  
Linear Coefficient ◽  
Precipitated Phase ◽  
Coherent Precipitate ◽  
Precipitate Growth ◽  
Non Linear ◽  
Generation Of Harmonics ◽  
Precipitation Phase ◽  
Ultrasonic Parameter

A non-linear ultrasonic study has been carried out to characterise the variation in precipitation phase. An age-hardenable aluminium alloy (2219) has been taken as a model alloy for the present investigation. It is shown that there is a strong correlation between the change in the non-linear coefficient and the change in the precipitated phase. The observed variations in the non-linear ultrasonic parameter have been explained by modifying an existing dislocation-coherent precipitate interaction model for the generation of harmonics in order to account for a weaker dislocation-semicoherent precipitate interaction. In general, the model proposed can be applicable to all precipitation-hardenable alloy systems undergoing coherent to incoherent precipitate phase transition.

Automated measurement of non-linear coefficient for optical fibres

1995 ◽  
Vol 27 (2) ◽  
pp. x
Author(s):  
Yuichi Tanaka ◽  
Masahito Mure ◽  
Yoshinori Namihira
Keyword(s):  
Optical Fibres ◽  
Automated Measurement ◽  
Linear Coefficient ◽  
Non Linear

Study of Self Phase Modulation in Chalcogenide Glass Photonic Crystal Fiber

2011 ◽  
Vol 110-116 ◽  
pp. 53-56
Author(s):  
Bhawana Dabas ◽  
Jivesh Kaushal ◽  
Monika Rajput ◽  
R. K. Sinha
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Phase Modulation ◽  
Fourier Method ◽  
Output Pulse ◽  
Design Parameters ◽  
Linear Coefficient ◽  
Self Phase Modulation ◽  
Crystal Fiber ◽  
Non Linear

In this paper, Self Phase Modulation (SPM) in chalcogenide As2Se3glass Photonic Crystal Fiber (PCF) is numerically studied by combining the fully vectorial effective index method (FVEIM) and Split Step Fourier Method (SSFM). The FVEIM is used to calculate the variation of effective refractive index of guided mode (neff), effective area (Aeff), dispersion and non-linear coefficient (γ) with wavelength for different designs of chalcogenide As2Se3PCF. The FVEIM solves the vector wave equations and SSFM solves non linear Schrödinger Equation (NLSE) for the different designing parameter of As2Se3PCF. In case of Self Phase Modulation (SPM), spectral width of the obtained output pulse at d/Λ=0.7 is 1.5 times greater than width of the output pulse obtained at d/L=0.3 using SSFM. Thus we can get the desired spectral broadening just by tailoring the design parameters of the PCF.

Investigation of Low Voltage Varistor Using TiO2 as Base Material and SiO2, Bi2O3 and WO3 as Dopants

2015 ◽  
Vol 1115 ◽  
pp. 156-159
Author(s):  
Shahida Begum ◽  
Zarrin Kothadapani ◽  
Mokanaraju K. Selvaraj ◽  
Mohamed Muntasir
Keyword(s):  
Electrical Properties ◽  
Breakdown Voltage ◽  
Power Loss ◽  
Mechanical Characterization ◽  
Low Voltage ◽  
Base Material ◽  
The Other ◽  
Linear Coefficient ◽  
Radial Shrinkage ◽  
Non Linear

Varistor with TiO2 as the base and SiO2, WO3 and Bi2O3 as dopants were investigated to create a low voltage varistor. The physical, mechanical, microstructural and electrical properties were studied where the concentration of SiO2 was varied but the concentration of WO3 and Bi2O3 was fixed. Physical and mechanical characterization consisted of green and fired density, axial and radial shrinkage and Vickers Hardness. Electrical evaluation on the other hand consisted of non-linear coefficient, breakdown voltage, power loss and clamping ratio. Non-linear coefficient of 2.16, very low breakdown voltage of 5.538V/cm and minimal power loss of 0.0124mW was achieved. It was found that optimum results were achieved with 98.3% TiO2, 0.7% SiO2, 0.5%Bi2O3 and 0.5%WO3.

Screen-printed varistors: New strategy for high non-linear coefficient

2007 ◽  
Vol 27 (13-15) ◽  
pp. 3883-3886 ◽  
Author(s):  
Claude Lucat ◽  
Marie-Pascale Martin ◽  
Hélène Debéda-Hickel ◽  
Alain Largeteau ◽  
Francis Ménil
Keyword(s):  
Linear Coefficient ◽  
Non Linear ◽  
New Strategy ◽  
Screen Printed
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