Identification of the Planetary Magnetosphere Boundaries with the Wavelet Multi-Resolution Analysis

2021 ◽  
Author(s):  
Mauricio Bolzan ◽  
Ezequiel Echer ◽  
Adriane M. de S. Franco ◽  
Rajkumar Hajra, R.
Keyword(s):  
Planetary Magnetosphere ◽  
Multi Resolution Analysis ◽  
Resolution Analysis

scholarly journals On Recovery Guarantees for One-Bit Compressed Sensing on Manifolds

2021 ◽  
Vol 65 (4) ◽  
pp. 953-998
Author(s):  
Mark A. Iwen ◽  
Felix Krahmer ◽  
Sara Krause-Solberg ◽  
Johannes Maly
Keyword(s):  
Compressed Sensing ◽  
Numerical Experiments ◽  
Optimal Scaling ◽  
Intrinsic Dimension ◽  
Recovery Method ◽  
Multi Resolution Analysis ◽  
Resolution Analysis

AbstractThis paper studies the problem of recovering a signal from one-bit compressed sensing measurements under a manifold model; that is, assuming that the signal lies on or near a manifold of low intrinsic dimension. We provide a convex recovery method based on the Geometric Multi-Resolution Analysis and prove recovery guarantees with a near-optimal scaling in the intrinsic manifold dimension. Our method is the first tractable algorithm with such guarantees for this setting. The results are complemented by numerical experiments confirming the validity of our approach.

scholarly journals Simulation of response spectrum-compatible ground motions using wavelet-based multi-resolution analysis

2021 ◽  
pp. 002029402110130
Author(s):  
Guan Chen ◽  
Zhiren Zhu ◽  
Jun Hu
Keyword(s):  
Ground Motion ◽  
Response Spectrum ◽  
Ground Motions ◽  
Power Spectra ◽  
Simulation Method ◽  
Eurocode 8 ◽  
Effective Response ◽  
Multi Resolution Analysis ◽  
Resolution Analysis ◽  
Simulated Ground Motions

This study proposed a simple and effective response spectrum-compatible ground motions simulation method to mitigate the scarcity of ground motions on seismic hazard analysis base on wavelet-based multi-resolution analysis. The feasibility of the proposed method is illustrated with two recorded ground motions in El Mayor-Cucapah earthquake. The results show that the proposed method enriches the ground motions exponentially. The simulated ground motions agree well with the attenuation characteristics of seismic ground motion without modulating process. Moreover, the pseudo-acceleration response spectrum error between the recorded ground motion and the average of the simulated ground motions is 5.2%, which fulfills the requirement prescribed in Eurocode 8 for artificially simulated ground motions. Besides, the cumulative power spectra between the simulated and recorded ground motions agree well on both high- and low-frequency regions. Therefore, the proposed method offers a feasible alternative in enriching response spectrum-compatible ground motions, especially on the regions with insufficient ground motions.

Image threshold segmentation method with 2-D histogram based on multi-resolution analysis

2009 ◽  
Author(s):  
Shuqian He ◽  
Jiangqun Ni ◽  
Lihua Wu ◽  
Hongjian Wei ◽  
Sixuan Zhao
Keyword(s):  
Segmentation Method ◽  
Threshold Segmentation ◽  
Multi Resolution Analysis ◽  
Resolution Analysis

scholarly journals A hexahedron element formulation with a new multi-resolution analysis

2014 ◽  
Vol 58 (1) ◽  
pp. 1-10 ◽  
Author(s):  
YiMing Xia ◽  
ShaoLin Chen
Keyword(s):  
Element Formulation ◽  
Multi Resolution Analysis ◽  
Resolution Analysis

Target detection in SAR images via radiometric multi-resolution analysis

2013 ◽  
Author(s):  
Jingwen Hu ◽  
Gui-Song Xia ◽  
Hong Sun
Keyword(s):  
Target Detection ◽  
Sar Images ◽  
Multi Resolution Analysis ◽  
Resolution Analysis
Sign in / Sign up

Export Citation Format

Share Document