A FAST TIME–DOMAIN INTEGRATION METHOD FOR COMPUTING NON-STATIONARY RESPONSE HISTORIES OF LINEAR OSCILLATORS WITH DISCRETE-TIME RANDOM FORCING

2002 ◽  
Vol 254 (4) ◽  
pp. 635-676 ◽  
Author(s):  
J.F. DUNNE
Keyword(s):  
Discrete Time ◽  
Time Domain ◽  
Integration Method ◽  
Fast Time ◽  
Stationary Response ◽  
Random Forcing ◽  
Domain Integration

scholarly journals The Time-Domain Integration Method of Digital Subtraction Angiography Images

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Shuo Huang ◽  
Le Cheng ◽  
Bin Zhu ◽  
Ping Zhou ◽  
Yu Sun ◽  
...  
Keyword(s):  
Digital Subtraction Angiography ◽  
Time Domain ◽  
Noise Suppression ◽  
Integration Method ◽  
Enhancement Effect ◽  
Digital Subtraction ◽  
Denoising Method ◽  
Signal Image ◽  
The Time Domain ◽  
Domain Integration

The clarity improvement and the noise suppression of digital subtraction angiography (DSA) images are very important. However, the common methods are very complicated. An image time-domain integration method is proposed in this study, which is based on the blood flow periodicity. In this method, the images of the first cardiac cycle after the injection of the contrast agent are integrated to obtain the time-domain integration image. This method can be used independently or as a postprocessing method of the denoising method on the signal image. The experimental results on DSA data from an aortic dissection patient show that the image time-domain integration method is efficient in image denoising and enhancement, which also has a good real-time performance. This method can also be used to improve the denoising and image enhancement effect of some common models.

Fast Time Domain Integral Equation Solvers for Large-Scale Electromagnetic Analysis

2004 ◽  
Author(s):  
Eric Michielsssen ◽  
Weng C. Chew ◽  
Jianming Jin ◽  
Balasubramaniam Shanker
Keyword(s):  
Integral Equation ◽  
Time Domain ◽  
Large Scale ◽  
Electromagnetic Analysis ◽  
Fast Time ◽  
Domain Integral ◽  
Time Domain Integral Equation

Fast time domain reflectometry (TDR) measurement approach for investigating the liquefaction of soils

2010 ◽  
Vol 21 (2) ◽  
pp. 025104 ◽  
Author(s):  
A Scheuermann ◽  
C Hübner ◽  
H Wienbroer ◽  
D Rebstock ◽  
G Huber
Keyword(s):  
Time Domain ◽  
Time Domain Reflectometry ◽  
Fast Time ◽  
Measurement Approach
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