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A Wavelet-Based QRS-Complex Detection
Kocian, Ondřej ; Provazník, Ivo (referee) ; Kozumplík, Jiří (advisor)
This project investigates methods of construction the wavelet-based QRS-complex detector. QRS-complex detection is very important, because it helps automatically calculate heart rate and in some cases it is used for compression ECG signal. The design of QRS detector can be made with many methods, in this project were mentioned and consequently tested only a few variants. The principle of designed detector used a wavelet-based decomposition of the original ECG signal to several frequency-coded bands. These bands are consequently transformed to absolute values and with the help of the threshold value are marked positions of assumed QRS complexes. Then are these assumed positions from all bands compared between themselves. If the position is confirmed at least at one nearby band, then is this position marked as true QRS complex. To increase efficiency of designed detector, two modifications were additionally mentioned. The first one, using the envelope of the signal, had rather negative effect on detectors efficiency. The second modification, using combined signal from three pseudoorthogonal leads, had reversely very good effect on detectors efficiency. In the end, the designed detector and all its modifications were tested on signals from CSE library (exactly on leads II, V2 and V6).
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The multi-functional centre Brno - Štýřice - construction technological project
Kocian, Ondřej ; Kopecký, Lukáš (referee) ; Biely, Boris (advisor)
The final thesis deals with structural and technological background for the construction of multi-functional building in Brno-Štýřice. The aim is the optimal design of contruction progress and necessary resources. This thesis contains construction-technological report, technological instruction, construction site layout, machinery and lifting configuration, design of transport and supply routes, safety work organization, measures to protect environment, building costs, time schedule and inspectional-test plan.
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Financial analysis of selected agricultural enterprises
Kocián, Ondřej ; Homolka, Jaroslav (advisor) ; Jaroslav, Jaroslav (referee)
This diploma thesis deals with the evaluation and comparison of the management of the chosen agriculture companies in the period 2010-2014 based on the methods of financial analysis. The first part of the thesis explains the influence of the Common Agricultural Policy on the agriculture of the Czech republic and descibes various methods of financial analysis. The second part contains financial analysis of selected companies and then evaluates and compares their financial situation based on the results of the analysis. The last part provides comparison of those two companies with the average results of a wide selection of other czech companies in the same branch.
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The multi-functional centre Brno - Štýřice - construction technological project
Kocian, Ondřej ; Kopecký, Lukáš (referee) ; Biely, Boris (advisor)
The final thesis deals with structural and technological background for the construction of multi-functional building in Brno-Štýřice. The aim is the optimal design of contruction progress and necessary resources. This thesis contains construction-technological report, technological instruction, construction site layout, machinery and lifting configuration, design of transport and supply routes, safety work organization, measures to protect environment, building costs, time schedule and inspectional-test plan.
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A Wavelet-Based QRS-Complex Detection
Kocian, Ondřej ; Provazník, Ivo (referee) ; Kozumplík, Jiří (advisor)
This project investigates methods of construction the wavelet-based QRS-complex detector. QRS-complex detection is very important, because it helps automatically calculate heart rate and in some cases it is used for compression ECG signal. The design of QRS detector can be made with many methods, in this project were mentioned and consequently tested only a few variants. The principle of designed detector used a wavelet-based decomposition of the original ECG signal to several frequency-coded bands. These bands are consequently transformed to absolute values and with the help of the threshold value are marked positions of assumed QRS complexes. Then are these assumed positions from all bands compared between themselves. If the position is confirmed at least at one nearby band, then is this position marked as true QRS complex. To increase efficiency of designed detector, two modifications were additionally mentioned. The first one, using the envelope of the signal, had rather negative effect on detectors efficiency. The second modification, using combined signal from three pseudoorthogonal leads, had reversely very good effect on detectors efficiency. In the end, the designed detector and all its modifications were tested on signals from CSE library (exactly on leads II, V2 and V6).
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