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Safe Communication App for Windows Phone
Vícha, Tomáš ; Veľas, Martin (referee) ; Herout, Adam (advisor)
The aim of this thesis is to describe the application development for secure communication between two users. The description begins with the analysis of already existing solutions, continues with the design of the user interface and the determination of requirements. There is also described a selection of suitable technologies and stages of application development together with its testing. The result of this work is an user-friendly application for the Windows Phone platform that performs end-to-end encryption of individual messages.
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Localization of Objects in Wireless Sensor Network Environment
Vícha, Tomáš ; Bidlo, Michal (referee) ; Šimek, Václav (advisor)
This thesis deals with the use of spatial awareness methods within technologies designed for creation of short-range wireless sensor networks. The thesis analyzes several techniques that can be used to estimate position of objects within the sensor network. For a practical solution, a method based on measuring the time differences of the sent messages was chosen. A circuit implementation of a network node based on the DW1000 chip, which works on ultra-wideband transmission technology, was implemented. A sensor network with the appropriate user application for its operation and display of localization results was also implemented.
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CRUDE OIL PREDICTION FOR COMPANIES IN ENERGY DEMANDING PRODUCTION
Vícha, Tomáš ; Dohnal, Mirko (advisor)
The dissertation deals with prediction of crude oil price and is tailor-made for such companies which are heavily crude oil related. The main dissertation target is to make sure that such companies can get ready for price changes and safeguard themselves against negative consequences. Crude oil prices are the main factor which affects prices of such final products as petrol. It is a well known fact that quantitative predictions are not reliable and all those who are forced to real on such vague data set for their decision-making are reluctant to use them. That’s how we would like to have at least the correct trend information. The dissertation introduces some concepts originally developed within artificial intelligence theory for the crude oil predictions. Specifically common sense algorithms and qualitative interpretation of some aspects of theory of chaos are the main contribution towards expanding of available prediction tools described by the dissertation. A systematic analysis of a sequence of qualitative solutions is the key part of the dissertation.
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Localization of Objects in Wireless Sensor Network Environment
Vícha, Tomáš ; Bidlo, Michal (referee) ; Šimek, Václav (advisor)
This thesis deals with the use of spatial awareness methods within technologies designed for creation of short-range wireless sensor networks. The thesis analyzes several techniques that can be used to estimate position of objects within the sensor network. For a practical solution, a method based on measuring the time differences of the sent messages was chosen. A circuit implementation of a network node based on the DW1000 chip, which works on ultra-wideband transmission technology, was implemented. A sensor network with the appropriate user application for its operation and display of localization results was also implemented.
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Stanovení spolehlivých identifikačních znaků kvalitních a silně přirůstavých stromů jako základ probírkové metody cílových stromů
Vícha, Tomáš
The aim of the thesis was determination of features, which indicate trees with above-average increment. The work was carried out in the forest district Borky, which is part of Training Forest Enterprise Masaryk Forest Křtiny. Trees of two main species, e.g. European beech and Norway spruce, were analyzed. In the field, total height, the height of the crown base, occurrence the forks and their heights were measured. Trees were assigned with social status, crown quality and release status. Using a logit model, it was found, that for beech, the only statistically significant parameter was social status. For spruce, diameter, crown length, distance between breast height and crown base, crown quality and the edaphic category were significant predictors of above-average increment. In the end, equations of probability have been compiled.
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Safe Communication App for Windows Phone
Vícha, Tomáš ; Veľas, Martin (referee) ; Herout, Adam (advisor)
The aim of this thesis is to describe the application development for secure communication between two users. The description begins with the analysis of already existing solutions, continues with the design of the user interface and the determination of requirements. There is also described a selection of suitable technologies and stages of application development together with its testing. The result of this work is an user-friendly application for the Windows Phone platform that performs end-to-end encryption of individual messages.
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CRUDE OIL PREDICTION FOR COMPANIES IN ENERGY DEMANDING PRODUCTION
Vícha, Tomáš ; Dohnal, Mirko (advisor)
The dissertation deals with prediction of crude oil price and is tailor-made for such companies which are heavily crude oil related. The main dissertation target is to make sure that such companies can get ready for price changes and safeguard themselves against negative consequences. Crude oil prices are the main factor which affects prices of such final products as petrol. It is a well known fact that quantitative predictions are not reliable and all those who are forced to real on such vague data set for their decision-making are reluctant to use them. That’s how we would like to have at least the correct trend information. The dissertation introduces some concepts originally developed within artificial intelligence theory for the crude oil predictions. Specifically common sense algorithms and qualitative interpretation of some aspects of theory of chaos are the main contribution towards expanding of available prediction tools described by the dissertation. A systematic analysis of a sequence of qualitative solutions is the key part of the dissertation.
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Průzkum zvláště chráněných a ohrožených rostlin v okolí obce Lesní Albrechtice
Vícha, Tomáš
This work is about the botanical research around the village Lesní Albrechtice with an emphasing on endangered and protected species of plants. This research was proceeded during 2014. Found endangered and protected plants were located by GPS receiver and then were focused on the map. On the territory were found these endangered and protected species: Wild Calla (Calla palustri), Martagon (Lilium martagon), Crocus Heuffelianus (Crocus heuffelianus), Europen Misletoe (Viscum album subsp. abietis) and Siberian Iris (Iris sibirica). In the end was described important measure for rescuing these species.
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