A New approach to Design and Implementation of IBM PC for Accessing Library CD-ROM Database via Campus Network

2013 ◽  
Author(s):  
Ruey-Shun Chen ◽  
D.J. Chen ◽  
Y.S. YEH
Keyword(s):  
Campus Network ◽  
New Approach ◽  
Cd Rom ◽  
Design And Implementation ◽  
Reasonable Price ◽  
Ibm Pc

Library CD-ROM with its enormous storage, retrieval capabilities and reasonable price, has been gradually replacing some of its printed counterparts. One of the greatest limitations on the use of stand-alone CD-ROM workstations, however, is that only one user can access the CD-ROM database at a time. This paper proposes a new approach to solving this problem.

Physical Wavelet Frame Denoising

Geophysics ◽  
2003 ◽  
Vol 68 (1) ◽  
pp. 225-231 ◽  
Author(s):  
Rongfeng Zhang ◽  
Tadeusz J. Ulrych
Keyword(s):  
Seismic Data ◽  
Noise Suppression ◽  
Real Data ◽  
Wavelet Denoising ◽  
Seismic Signals ◽  
Wavelet Frame ◽  
New Approach ◽  
Design And Implementation ◽  
Ground Roll ◽  
Acoustic Processing

This paper deals with the design and implementation of a new wavelet frame for noise suppression based on the character of seismic data. In general, wavelet denoising methods widely used in image and acoustic processing use well‐known conventional wavelets which, although versatile, are often not optimal for seismic data. The new approach, physical wavelet frame denoising uses a wavelet frame that takes into account the characteristics of seismic data both in time and space. Synthetic and real data tests show that the approach is effective even for seismic signals contaminated by strong noise which may be random or coherent, such as ground roll or air waves.

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