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Time series analysis using deep learning
Hladík, Jakub ; Kolařík, Martin (oponent) ; Uher, Václav (vedoucí práce)
The aim of the thesis was to create a tool for time-series prediction based on deep learning. The first part of the work is a brief description of deep learning and its comparison to classical machine learning. In the next section contains brief analysis of some tools, that are already used for time-series forecasting. The last part is focused on the analysis of the problem as well as on the actual creation of the program.
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Tool for deep neural network design
Hladík, Jakub ; Harár, Pavol (oponent) ; Uher, Václav (vedoucí práce)
The aim of this thesis was to create a program for visualization of artificial neural networks. The first part contains definition of artificial neural networks, comparison with biological neural networks and comparison with processors used in personal computers. Also contains brief description of their function and advantages/disadvantages of artificial neural networks. The second part contains brief explanation of deep learning. There are described methods and models used for learning. The third part contains introduction to Caffe framework and summary of the most frequently occuring layers in neural networks, that are created by using Caffe. Next part contains brief analysis of created program as well as detailed description of classes, that program contains.
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Preparation of ceramic-metal composites for ballistic protection
Hladík, Jakub ; Roleček, Jakub (oponent) ; Salamon, David (vedoucí práce)
Aim of this bachelor thesis is fabrication of ceramic-metal composite for ballistic protection, the main focus is on the materials interface. Properties of used ceramic and metal materials are described as well as applicable mechanical tests. Alumina / aluminum composite was prepared experimentally by gravity casting/sintering of aluminium among the alumina hexagons. Various temperature conditions were tested to achieve the optimal casting conditions at the lowest possible temperature. Prepared composite was tested by a ballistic impact according to NIJ Standard-0108.01 and NATO Standard STANAG 2280. Properties of the aluminium/alumina interface were verified by the fracture analysis of damaged samples and by a special version of four-point beam bending test. Also, a brief examination of aluminium microstructure was made.
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Vliv granulace na sorpční vlastnosti expandovaného grafitu
Hladík, Jakub ; Poláček, Petr (oponent) ; Kučera, František (vedoucí práce)
Expandovaný grafit patří mezi perspektivní sorpční materiály, jeho nevýhodou je ale obtížná manipulace. Tato práce se zabývá granulací expandovaného grafitu a vlivem granulace na sorpci oleje. Byly připraveny vzorky se škrobovým a dextrinovým pojivem. Se škrobovým pojivem byly připraveny vzorky plněné celulózovými vlákny a dřevní moučkou. Pevnost granulátu byla zjištěna z podsítného podílu. Sorpční kapacita byla stanovena gravimetricky po 30 minutách ponoření v oleji. Nejvyšší sorpční kapacity dosahoval granulát plněný nižším množstvím dřevní moučky. Přídavek celulózových vláken podstatně zpevnil granulát. Na základě předešlých výsledků byl připraven granulát definovaného tvaru a velikosti. Morfologie granulátu byla sledována rastrovacím elektronovým mikroskopem.
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Preparation of ceramic-metal composites for ballistic protection
Hladík, Jakub ; Roleček, Jakub (oponent) ; Salamon, David (vedoucí práce)
Aim of this bachelor thesis is fabrication of ceramic-metal composite for ballistic protection, the main focus is on the materials interface. Properties of used ceramic and metal materials are described as well as applicable mechanical tests. Alumina / aluminum composite was prepared experimentally by gravity casting/sintering of aluminium among the alumina hexagons. Various temperature conditions were tested to achieve the optimal casting conditions at the lowest possible temperature. Prepared composite was tested by a ballistic impact according to NIJ Standard-0108.01 and NATO Standard STANAG 2280. Properties of the aluminium/alumina interface were verified by the fracture analysis of damaged samples and by a special version of four-point beam bending test. Also, a brief examination of aluminium microstructure was made.
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