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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Relative earthquake locations
 Jeschkeová, Zuzana ; Bachura, Martin (advisor) ; Doubravová, Jana (referee)
This bachelor thesis concerns the issues related to techniques of earthquake locations. The methods can be divided into a two groups: absolute (Geiger method, grid search) and relative (master-event, hypoDD) ones. A greater emphasis is put on the latter ones - the relative methods. In these methods make use of so-called differential times - absolute time differences between phase arrivals of two earthquakes. The differential times can be estimated by the means of waveform cross-correlations. Our main objective was to compare cross-correlated differential times with the real ones and determine their accuracy. The analysis revealed that the difference - bias in differential time is present and for tho earthquakes with different magnitude it can reach 0.06 s. Keywords: locations, earthquakes, cross-correlation, seismograms
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Monitoring of Employees with Android Phone
 Kužel, Jan ; Rychlý, Marek (referee) ; Očenášek, Pavel (advisor)
This paper deals with the monitoring of selected activities on portable mobile devices running Android and subsequent processing of data using a web application. Phone calls, text messages and location are meant by these activities. It introduces an existing application which serves to monitor. It also includes the analysis of monitoring capabilities of selected activities on mentioned devices. Then it includes a specification, design, implementation, demonstration and testing of a new system designed to monitoring activities and data processing.
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