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Household fermentor design
Švec, Jan ; Jecha, David (referee) ; Houdková, Lucie (advisor)
The aim of this thesis is to design a fermentation unit specially adjusted for household operating. Unit processes kitchen and garden biodegradable waste with requirements of low acquisition costs, operating costs and demands of service. Benefits of this unit are production of biogas, which will be utilized in household, and processed of biodegradable waste to nutritious manure. The first part of the work is aimed on description of anaerobic fermentation process and summary of operating conditions. The main part deals with potential of household and garden biodegradable waste for production of biogas and design of fermentation unit. Proposals for biogas utilization and economy of whole project are mentioned.
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Object Detection Using Kinect
Švec, Ján ; Zahrádka, Jiří (referee) ; Španěl, Michal (advisor)
This bachelor's thesis deals with the object detection using Kinect. Kinect is a motion sensing input device by Microsoft company for the Xbox 360 video game console. The objective of this work was to evaluate the existing approaches and practices for the detection not only using the image from the camera but also depth map (RGB-D sensor). The work deals in details with RoboEarth tool, its installation, settings, creation of 3D model and the detection. Performance of the RoboEarth tool was in the work investigated experimentally and also evaluated.
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Vehicle with ecological drive
Švec, Jan ; Novotný, Pavel (referee) ; Píštěk, Václav (advisor)
This work is focused on design of three-wheeler with ecological drive. The first chapter discusses the history of three-wheelers from beginning of their development. The second chapter is a survey of present production and the third chapter is devoted to separate design of vehicle conception.
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Chassis of three-wheel electromobile
Švec, Jan ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
The target of this thesis was to design conception of electric three-wheeler. The first chapter compares city cars and its technical data. The second chapter is focused on conception of vehicle and in the third chapter are described construction groups of vehicle. Next is here solution of stability and front suspension.
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Training exercises and methods for developing the special strength of adult pole vaulters
Švec, Jan ; Hojka, Vladimír (advisor) ; Jebavý, Radim (referee)
Title: Training means and methods for developing the special strength of adult pole vaulters Objectives: The aim of the bachelor thesis is to create a list of exercises used in the special strength training of pole vaulters. Another goal is their description for the best possible understanding of the exercise. Further, subsequent photo documentation for better orientation in the execution of the exercise. And the following description of the use of exercises in training. Methods: Information for the bachelor's thesis was obtained from special literature. Another important source of information was my own training and racing experience. Further consultations with pole vaulting experts. A selection of exercises from the literature and information from experts. Their subsequent photo shoot, photo editing and description. Results: I successfully created a list of exercises and discovered many new exercises that I can continue to use in my training. The exercises were simply described, and thanks to the photographic documentation, the exercises can be performed easily. Keywords: pole vault, athletics, special preparation, strengthening, technique
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Domain Specific Data Crawling for Language Model Adaptation
Gregušová, Sabína ; Švec, Ján (referee) ; Karafiát, Martin (advisor)
The goal of this thesis is to implement a system for automatic language model adaptation for Phonexia ASR system. System expects input in the form of source that, which is analysed and appropriate terms for web search are chosen. Every web search results in a set of documents that undergo cleaning and filtering procedures. The resulting web corpora is mixed with Phonexia model and evaluated. In order to estimate the most optimal parameters, I conducted 3 sets of experiments for Hindi, Czech and Mandarin. The results of the experiments were very favourable and the implemented system managed to decrease perplexity and Word Error Rate in most cases.
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Binding of azaphthalocyanine on 5'-end of oligonucleotide - "click" chemistry
Křížová, Iveta ; Kopecký, Kamil (advisor) ; Švec, Jan (referee)
Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Chemistry and Drug Control Student: Iveta Křížová Supervisor: PharmDr. Kamil Kopecký, Ph.D. Title of diploma thesis: Binding of azaphthalocyanine on 5'-end of oligonucleotide - "click" chemistry This diploma thesis is focused on synthesis of pyrazin-2,3-dicarbonitrile derivates that are substituted with alkylamine substituents in location 5 and 6. Then cyclotetramerization of these compounds to the final azaphthalocyanines was realized. Alkylamine substituents were chosen in the way, that bond on 5'-end of oligonucleotide with terminal alkyn modification could be performed according to Huisgen 1,3-dipolar cycloaddition. Azaphtalocyanine with one hydoxyl group was prepared and described. Preparation of intended structure with one azide group was unsuccessful. Azaphtalocyanines are characterized by important photophysical and photochemical properties. Therefor were these compounds characterized with NMR, IR and mass spectra. In section Theory was explained the principle of quenching of fluorescence, practical use of quenching and overview of up to date the most commonly used quencher of fluorescence. There is also comparing of their positive and negative properties and little bit outlining of properties...
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Personal Voice Activity Detection
Sedláček, Šimon ; Landini, Federico Nicolás (referee) ; Švec, Ján (advisor)
Cílem této práce je implementovat, otestovat a vyhodnotit řečníkem podmíněnou metodu pro detekci hlasu ( Voice Activity Detection , VAD) nazvanou Personal VAD. Pro detekci využívá tato metoda LSTM neuronových sítí a jejím účelem je vytvoření systému schopného spolehlivě detekovat řečové signály cílového řečníka při zachování vlastností typického VAD systému co se velikosti modelu, odezvy a nízkých nároků na zdroje týče. Systém je trénován pro klasifikaci řečových rámců do tří tříd: neřeč, řeč necílového a řeč cílového řečníka. Za tímto účelem využívá metoda speaker embedding vektory pro reprezentaci cílového řečníka jako součást vstupních příznaků. Některé z náročnějších variant systému využívají skórování rámců systémem pro verifikaci řečníka, což vede ke zvýšení spolehlivosti klasifikace. Vedle základní metody skórování představené v originálním článku byly navrženy dvě modifikace, jež základní metodu překonaly a zlepšily spolehlivost výsledného systému i v akusticky náročných prostředích.
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The Effect of Bulkiness of Non-peripheral Substituents of Phthalocyanines on their Absorption and Photophysical properties
Paušímová, Zuzana ; Nováková, Veronika (advisor) ; Švec, Jan (referee)
Charles University in Prague, Faculty of Pharmacy in Hradec Králové Department Department od Biophysics and Physical Chemistry Student Zuzana Paušímová Supervisor doc. PharmDr. Veronika Nováková Ph.D. Title of thesis The Effect of Bulkiness of Non-peripheral Substituents of Phthalocyanines on their Absorption and Photophysical Properties Phthalocyanines are planar macrocyclic compounds which absorb the light over 670 nm due to their large system of conjugated double bounds. Peripheral substitution of phthalocyanines significantly affects the position of the main absorption band. Absorption at longer wavelengths is highly advantageous in any biological applications because such light does not interfere with endogenous chromophores. It was discovered that the desired red-shift of absorption band is much more pronounced at non-peripherally substituted phthalocyanines. However, it was recently found out that the presence of bulky non-peripheral substituent shifts significantly absorption maximum back to lower wavelengths. The aim of this study was to explain this phenomenon more in detail. For this purpose, a series of phthalocyanines bearing non-peripheral (alkyl- or arylsulphanyl) substituents of different bulkiness was prepared. Syntheses included nucleophilic substitution leading to appropriate...
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Recognition of Multi-Talker Overlapping Speech Using Neural Networks
Hradil, Jaromír ; Švec, Ján (referee) ; Žmolíková, Kateřina (advisor)
Tato práce se zabývá rozpoznáváním řeči překrývajících se řečníků pomocí neuronové sítě. Zkoumá problém rozpoznávání řečí od vícero řečníků a způsoby, jimiž se tento daný problém řeší. Jedná se konkrétně o aplikaci kromě tradičních komponentů jako konvoluční neuronové sítě, LSTM atd. také speciálních komponentů: attention mechanismus a gated konvoluce. A dále také aplikace techniky zvanou permutation invariant training. Součástí této práce je aplikování těchto přístupů na přidělená trénovací data, která jsou tvořena uměle vytvořenými směsmi dvou řečníků předčítající články z Wall Street Journal. Dalším krokem bylo natrénování příslušných architektur používající kombinující prvky zmíněné nahoře. Modely v této práci nahrazují akustický model. Jednalo se o dvě architektury užívající různé typy attention mechanismu a o jednu bez něj. Experimenty ukázaly, že architektury užívající attention mechanismus v tomto typu úlohy něpřekonaly tradičnější architekturu s užitím gated konvolucí. Přesto ale ukázaly potenciál.
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