Abstract: The mainly used devices to detect earthquakes are velocimeters and accelerometers. However, it is necessary to detect seismic waves accurately in micro-seismic wave measurement. A heterodyne laser interferometer is a high resolution detection device. Therefore, the laser interferometer is used as a seismometer. In micro-seismic signal analysis, it is required to discriminate earthquakes from explosions since micro-seismic waves have small magnitudes. To classify seismic waves, the body-wave amplitude ( p A ) and the surface-wave amplitude ( s A ) data are used. K-means clustering is implemented and then earthquake and explosion events are discriminated by using these data.

• Publication Date: 29-Aug-2015
• DOI: 10.15224/978-1-63248-073-6-21
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Abstract: A service model that manages the copyrights of national research reports in Korea is designed. When a new research document is submitted to the copyright management server, it is checked whether the document has similar expressions to the already published documents or not. If it has the plagiarized expressions, the service helps authors to prepare the reference list and also to attach the citation mark in proper locations of the new document. Only when the new document is free from the plagiarism suspicion, it can be registered as a copyright holding report. To download and view the registered reports, customers should register and sign on as member users. Only the registered users can download and see the encrypted documents through the dedicated document viewer. When the viewer opens a registered document, a log record is generated and transmitted to the server. After collecting all log records at the server, the copyright management service can analyze them also to mine usage patte

• Publication Date: 29-Aug-2015
• DOI: 10.15224/978-1-63248-073-6-22
• Views: 0
• Downloads: 0