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Self Learning System
Lukáš, Radek ; Solár, Peter (referee) ; Ruttkay, Ladislav (advisor)
Bachelor's thesis on the theme self learning system deal with problems self learning both in term of theoretic and practical. It explains principles of the human teaching and its efficient exploitation with the view to achievement better results with less exertion studying. Substantial part of bachelor's thesis is algorithm design respecting theoretic piece of knowledge and suitable for computer program fuelling self learning and practical implementation of web application containing articles, textbooks, chaps and cards from which student is able to set a test. Principle of application is based on self classification of student. Questions in test are iterative according to time and self classification. Application can help for quicker and superior mastered to learning.
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Modified Pushdown Automata
Hromádka, David ; Solár, Peter (referee) ; Meduna, Alexandr (advisor)
This work introduces limited Hromádka's automata as an extension of classical pushdown automata. This extension means that the automaton is able to create new pushdowns, insert input symbols into them, join them and compare with the input string in run time. The number of such pushdowns is limited by choosen constant n . This work also describes the implementation of the application, that realizes the activity of this automata and is looking for the sequence of derivational steps, by which the automaton accepts the input string.
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Parallel Deep Pushdown Automata
Solár, Peter ; Křivka, Zbyněk (referee) ; Meduna, Alexandr (advisor)
This thesis introduces parallel deep pushdown automata as the parallel version of the deep pushdown automata. They are based on the rules, where the automaton can expand n topmost non-terminals in only one derivation step if there are enough non-terminals on the pushdown. The main advantage rests in a fact, that parallel automaton can makde a decission faster.
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Generator of 3D Objects Based on L-Systems
Kvita, Jakub ; Solár, Peter (referee) ; Vrábel, Lukáš (advisor)
The aim of this bachelor thesis was to create an interactive system for generating 3D models. The generator is based on L-systems as a kind of formal grammars and turtle graphics for 3D modeling. The application was created in Java SE using JOGL library as access point for OpenGL and rendering. The thesis analyze the theoretical basis of L-systems, turtle graphics and rendering 3D objects and then describes creation of application using the acquired knowledge.
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Analysis of brain tumors based on line of interest
Širůčková, K. ; Solár, P. ; Marcoň, P.
Due to the high resolution of soft tissue, magnetic resonance imaging plays a crucial role in the diagnosis and therapy planning in the neurosurgery field whereas it is necessary to determine which pathology in the brain tissue is involved. Glioblastoma multiforme, metastatic tumors and abscesses are examined in detail from magnetic resonance images. In clinical practice, all mentioned pathologies are diagnosed through invasive methods in the form of biopsy followed by histology of the affected tissue. This work is focused on an alternative non-invasive method of tumor diagnosis. The method is based on the data analysis from defined curves (drawn into the apparent diffusion images) that lead from the tumor area. The analysis of curves could lead to non-invasive diagnostics of the pathological tissue.
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Nanostructured films based on plasma polymers
Solař, Pavel ; Shukurov, Andrey (advisor) ; Vyskočil, Jiří (referee)
In this thesis we have studied growth and properties of thin films prepared by tilted deposition using sputtering. The construction of low pressure magnetron is presented. The influence of deposition conditions on formation of columnar structure using scanning electron microscope was studied. Formation of columnar structures of metals, composites metal-plasma polymer and plasma polymer is described. The influence of deposition conditions on surface roughness obtained by AFM is discussed. Chemical structure of composite and plasma polymer films has been determined using XPS and infrared spectroscopy.
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Influence of non-equilibrium plasma on seeds
Červenková, Veronika ; Kylián, Ondřej (advisor) ; Solař, Pavel (referee)
Agriculture was, is and will always be one of the most important economic sectors owing to its primary purpose: the global food security. Forming the base pillar of the so- ciety's system, it is the privilege of nations to make their products accessible to everyone, regardless of the environmental or economical conditions. The employment of the newest technologies in order to secure its regulation gave rise to a brand new field of science - plasma agriculture. Plasma agriculture examines the use of non-thermal plasma on natural sources with diverse objectives. Soil rehabilitation, microbial food decontamination or insecticide acti- vities are not the only examples. In this thesis we shall devote to the DBD air plasma application on the Pumpkin seeds (sort Small Sugar) in order to improve its germination. After verifying the selected plasma source impact on eight polymer foils the main focus was given to the seeds. It was found that the plasma treatment induces changes in the chemical composition and water droplet drying dynamics that in turn result in dramatic increase of surface wettability. These changes must not have been accompanied by the burning; otherwise the treatment led to a radical disruption of seeds' morphology and to failure of the essential - enhancement of the germination rate. 1
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Study of velocities of nanoparticles produced by means gas aggregation source
Škorvánková, Kateřina ; Solař, Pavel (advisor) ; Nikitin, Daniil (referee)
A mechanical time-of-flight filter designed for measuring velocities of nanoparticles produced by gas aggregation source has been developed. The emphasis is placed on the resolution and accuracy maximization as well as on simplicity of use. It is shown that the experimentally measured data (influenced by the design of the filtr) may be converted to the real velocity distribution and a method of conversion is presented. Subsequently, the filter is used to measure velocities of nanoparticles produced under various experimental conditions and the dependence of the velocity on given conditions is shown. Furthermore, a sample for every experimental setup has been prepared for SEM analysis to determine size distribution of the nanoparticles. Finally, the size dependence of velocity is illustrated.
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