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SMV-2023-39: Controller for the distance measuring probe
Holá, Miroslava ; Řeřucha, Šimon ; Čížek, Martin ; Pavelka, Jan ; Hucl, Václav
Measurements using a laser interferometer are among the most accurate types of distance measurements. In order to achieve this goal, it is necessary not only to have a precise laser source and an interferometer but also a controller, which ensures the correct recording and reading of the experimental data. The contract research „Controller for a distance measuring probe“ was focused on the realization of such a controller. The controller contains several service modules which ensure correct recording and reading of measured data and several related accessories. It reads and records data from a laser interferometer and also from a module which records atmospheric data necessary for the measured distance determination.
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Transport and Noise Characteristics of MOSFET Transistors
Chvátal, Miloš ; Hudec, Lubomír (referee) ; Koktavý, Bohumil (referee) ; Pavelka, Jan (advisor)
This doctoral thesis is focused on the analysis of transport characteristics of submicron and micron transistors MOSFET. The assumption is a constant gradient of concentration, which leads to the fact that the diffusion current density is independent of the distance from the source. Active energy was determined from temperature dependence. The proposed physical model made it possible to determine the value of access resistance between drain and source their temperature dependence. Based on the assumption that the divergence of the gradient of the current density in the channel is zero. IV characteristics of the transistor MOSFET are derived and conducted experimental monitoring current channel depending on the collector voltage for the series of samples with different channel lengths in a wide temperature range from 10 to 350 K. Information on the concentration of charge transport in the channel and the position of the Fermi level at the point of active trap, which is the source of RTS noise, is obtained from the analysis of the transport characteristics. Determining the concentration of charge transport and the position of the Fermi level is important because these variables determine the intensity of quantum transitions and their values are not the same throughout the length of the channel. It was experimentally proved from the analysis of the characteristics of RTS noise that concentration at the local channel decreases with increasing current at a constant voltage on the gate and a variable voltage at the collector. Further, the position of active traps of RTS noise was intended and it was found that this is located near the collector. Active trap is located at the point where the Fermi level coincides with energy level of the traps.
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Information System of Sports Club
Pavelka, Jan ; Burget, Radek (referee) ; Kunc, Michael (advisor)
Thesis includes introduction with overview of technologies for development of web applications and information systems, description of problems in development, analysis and specifications of requirements and description of implementation of information system of footballtennis club. System is implemented with use of technologies PHP, JavaScript, XHTML, CSS and MySQL. Bibliographic citation of thesis: PAVELKA, J. Information system of sport club . Brno: University of technology. Faculty of information technology. Department of information systems, 2007. 50 s. Bachelor's thesis. Supervisor of bachelor's thesis Ing. Michael Kunc.
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Tool for Easy Coding and Debugging of PHP Application
Pavelka, Jan ; Křivka, Zbyněk (referee) ; Marušinec, Jaromír (advisor)
The goal of this master's thesis is an introducing with tools for easy coding and debugging of PHP applications and to implement such tool on the basis of analysis of common requirements and specific requirements of IS VUT designers. The project includes an introduction with important ideas and terms referring to tool, analysis and specifications of requirements and design and implementation of final tool.
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Object layout in a 2D room based on text description
Pavelka, Jan ; Rosa, Rudolf (advisor) ; Kasner, Zdeněk (referee)
This thesis presents a solution for generating structured description a 2D map of a room from a bird's eye view based on textual description in Czech. It focuses on identifying physical objects and their mutual relative positions in the description. It describes linguistic phenomena of the information extraction and their usage in the im- plementation. It shows how syntactic parsing can be used for this task. Then, it uses a genetic algorithm to find a feasible layout of the extracted objects with respect to spatial constraints constructed from the extracted information. 1
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Využití běžeckého wattmetru STRYD pro stanovení úrovně VO2max u vytrvalostních běžců
Bekr, Ondřej ; Kundera, Václav (referee) ; Pavelka, Jan (advisor)
Determining the limits of general endurance, critical power and maximal oxygen consumption is now a common part of the training process of professional athletes and their preparation to achieve the best possible sports results. Power is a very useful metric in cycling, but in recent years runners have also been trying to exploit its potential. Running power is only functional if it represents well the metabolic load of the organism. This thesis investigates the relationship between running power PO and oxygen consumption VO2, a representative of the metabolic load of the organism, in indoor and outdoor environments. Furthermore, thesis verifies the possibility of determining the VO2max level of runners using running power. The relationship between PO and VO2 is linear, for individual subjects the R2 is 0,95±0,07 in the indoor and 0,97±0,02 in the outdoor. For all subjects (TO) in the indoor the R2 takes the value of 0,67 and in the outdoor the value of 0,79. There was a difference of 1,2% (PO) and 3,7% (VO2max) between the values measured in the different environments. The model prediction from all TO in the indoor environment has an error of 3,5%.
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n-3 polyunsaturated fatty acids in prevention of cardiovascular diseases
Pavelka, Jan ; Kraml, Pavel (advisor) ; Černá, Milena (referee)
Clinical trials have documented beneficial effect of n-3 polyunsaturated fatty acids on health. Regular dietary intake of n-3 PUFAs decreases the risk of cardiovascular dieseas. n-3 PUFAs may be a safe and effective supplement to drug treatment for reducing the risk of myocardial infarction, arrhythmia and sudden cardiac death. n-3 PUFAs show antiatherogenic properties; e.g. they decrease inflammation, stabilize atherosclerotic plaques and prevent other chronic deseases. For primary prevention it is recommended to eat fish at least twice a week, people with documented coronary heart disease should consume 1 gram of n-3 PUFAs daily. Fish oil and oily fish (losos, tuna, trout, mackerel) are rich in EPA and DHA. ALA is found e.g. in flax seed oil.
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Residue analysis from archaeological ceramics using specific antibodies and mass spectrometry
Pavelka, Jaroslav ; Kučera, Lukáš (konzultant)
Important information preserved in the form of biological markers - so-called organic residues containing food residues - can be preserved on ceramics under special conditions. By analyzing them, it is possible to determine the type of food being prepared or consumed in the past. For this reason, a laboratory procedure based on the ELISA method (Enzyme-Linked Immuno Sorbent Assay) was developed, primarily aimed at determining the presence of denatured proteins from medieval ceramics, which uses available and certified kits for immunological analysis. The approved methodology is intended for scientific experts from the ranks of archaeologists, bioarchaeologists and immunologists working with archaeological material.
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