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Detection of alcohol in speech signal
Kupka, Petr ; Holčík, Jiří (referee) ; Sigmund, Milan (advisor)
The diploma thesis Detection of Alcohol in Speech Signal first describes the effect of alcohol on the human body. The second part deals with ways to obtain parameters that describe the speech signal. The third part provides a brief overview of previous case studies and patents focused on the detection of alcohol in the speech signal. The fourth part presents the collected own database of voice recordings and developed software application for the analysis of intoxicated speech. The final part describes the measured changes in speech signal parameters that indicate alcohol intoxication.
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Extrication of Persons Trapped in Crashed Vehicles with Respect to their Construction
Pirner, Adam ; Kupka, Petr (referee) ; Vémola, Aleš (advisor)
This thesis deals with the topic of extrication of people trapped incrashed vehicles regarding the construction of the vehicle. Part of the resources needed for this theses was taken from a literary survey drawn up with the help of the Research and scientific library in Hradec Králové according to the given topic and key phrases. The first part of the thesis deals with specific parts of the constructions of cars. This part is followed by description of road accidents, various kinds of accidents and possible deformations of cars after accidents. The thesis deals with extrication itself made by fire brigades, suitable procedures, kinds of interventions and means of used technical equipment. Another part suggests ways of saving trails and evidence during road accident interventions. Final part of the thesis is focused on overall analysis of the given problem based on personal experience, suggestions, negative aspects of the current situation and differences in training of possible situations with reality at the site of the accident.
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High dynamic range imaging
Kupka, Petr ; Zach, Ondřej (referee) ; Slanina, Martin (advisor)
Bachelor thesis deals with basic principles of increasing the dynamic range of digital photography. The work also looks for the methods that are used to create high dynamic range (HDR) photography, and examines methods for compressing HDR images for low dynamic range (LDR) imaging. Implemented algorithms for tone mapping are performed in HDR_lab program created in Matlab.
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Are More Liquid Stocks Also More Efficient?
Kupka, Petr ; Krištoufek, Ladislav (advisor) ; Benčík, Daniel (referee)
Liquidity and informational efficiency are closely watched features of financial markets. Together with stock exchange size effect, captured by market capitalization, this thesis examines the triple of relationships among these three stock market properties. Applying methods of sequences and reversals ratio test, autocorrelation coefficient test and variance ratio test provided us with 14 proxy measures of efficiency for each stock. Daily prices and volumes traded for period 2003 - 2013 of 206 stocks sampled from 22 stock exchanges were used. The same data were used for Amihud illiquidity measure. The positive relationship between stock efficiency and liquidity was not strongly supported neither rejected. It turned out that stock liquidity is very strongly positively dependent on size of stock exchange where is that particular stock listed. It was also concluded that there are more efficient stocks listed in larger stock exchanged. JEL Classification: G12, G14, G15 Keywords: stock liquidity, stock exchange size, stock efficiency Author's e-mail: kupkapetr@gmail.com Supervisor's e-mail: kristoufek@ies-prague.org
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Detection of alcohol in speech signal
Kupka, Petr ; Holčík, Jiří (referee) ; Sigmund, Milan (advisor)
The diploma thesis Detection of Alcohol in Speech Signal first describes the effect of alcohol on the human body. The second part deals with ways to obtain parameters that describe the speech signal. The third part provides a brief overview of previous case studies and patents focused on the detection of alcohol in the speech signal. The fourth part presents the collected own database of voice recordings and developed software application for the analysis of intoxicated speech. The final part describes the measured changes in speech signal parameters that indicate alcohol intoxication.
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Are More Liquid Stocks Also More Efficient?
Kupka, Petr ; Krištoufek, Ladislav (advisor) ; Benčík, Daniel (referee)
Liquidity and informational efficiency are closely watched features of financial markets. Together with stock exchange size effect, captured by market capitalization, this thesis examines the triple of relationships among these three stock market properties. Applying methods of sequences and reversals ratio test, autocorrelation coefficient test and variance ratio test provided us with 14 proxy measures of efficiency for each stock. Daily prices and volumes traded for period 2003 - 2013 of 206 stocks sampled from 22 stock exchanges were used. The same data were used for Amihud illiquidity measure. The positive relationship between stock efficiency and liquidity was not strongly supported neither rejected. It turned out that stock liquidity is very strongly positively dependent on size of stock exchange where is that particular stock listed. It was also concluded that there are more efficient stocks listed in larger stock exchanged. JEL Classification: G12, G14, G15 Keywords: stock liquidity, stock exchange size, stock efficiency Author's e-mail: kupkapetr@gmail.com Supervisor's e-mail: kristoufek@ies-prague.org
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High dynamic range imaging
Kupka, Petr ; Zach, Ondřej (referee) ; Slanina, Martin (advisor)
Bachelor thesis deals with basic principles of increasing the dynamic range of digital photography. The work also looks for the methods that are used to create high dynamic range (HDR) photography, and examines methods for compressing HDR images for low dynamic range (LDR) imaging. Implemented algorithms for tone mapping are performed in HDR_lab program created in Matlab.
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