scholarly journals Analysis of Kelvin waves in High-Resolution Doppler Imager and Microwave Limb Sounder stratosphere measurements using a constrained least squares method

1998 ◽  
Vol 103 (D18) ◽  
pp. 23131-23151 ◽  
Author(s):  
R. Srikanth ◽  
D. A. Ortland
Keyword(s):  
High Resolution ◽  
Least Squares ◽  
Least Squares Method ◽  
Kelvin Waves ◽  
Constrained Least Squares ◽  
Doppler Imager

Constrained least squares filtering in high resolution PET and SPECT imaging

1990 ◽  
Vol 37 (2) ◽  
pp. 647-651 ◽  
Author(s):  
G.D. Hutchins ◽  
W.L. Rogers ◽  
P. Chiao ◽  
R.R. Raylman ◽  
B.W. Murphy
Keyword(s):  
High Resolution ◽  
Least Squares ◽  
Spect Imaging ◽  
Constrained Least Squares

Constrained Least-Squares Method for Computing Equivalent Static Wind Loads of Large-Span Roofs

2014 ◽  
Vol 17 (10) ◽  
pp. 1497-1515 ◽  
Author(s):  
Xuanyi Zhou ◽  
Ming Gu ◽  
Gang Li
Keyword(s):  
Least Squares ◽  
Large Scale ◽  
Least Squares Method ◽  
Weighting Factor ◽  
Wind Loads ◽  
Specific Response ◽  
Computational Accuracy ◽  
Constrained Least Squares ◽  
Large Span ◽  
Equivalent Static Wind Loads

Equivalent static wind loads (ESWL) are widely used by structural designers to determine a specific response of large-scale structures. However, structural designers usually pay attention to more responses. Thus, this study proposes a constrained least-squares method to compute the ESWL distribution that can simultaneously target multi-responses. The loading distribution is regarded as a linear combination of basic load distributions. Two forms of basic load distribution are presented herein. The magnitude range of ESWLs is limited by controlling the bounds of the participation factor, which can be regarded as a constrained linear least-squares problem. Furthermore, since only a few structural responses are usually emphasized by structural designers, weighting factor is imported to improve the accuracy of these focused responses. To verify its computational accuracy, the method is applied to a real large-span roof structure. The results of calculations show that a reasonable magnitude of ESWL distribution can be achieved. There seems to always be a balance between the number of targeted responses and computational accuracy.

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