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Possibilities of SinuTrain software in programming of CNC machine tools
Kohout, Tomáš ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
This thesis illustrates the potential use of software SinuTrain for programming CNC machine tools on the component Sugar Bowl. First of all, Sinumerik 840D control system - ShopTurn is briefly positioned among other control systems. Subsequently, the technological preparation of production is processed for the two alternatives. The first one is production version from the rod blank 160 mm and the second one is production variant from a pre-cast. NC programs are created for the production of components of both technological options of Sugar Bowl in the software SinuTrain 6.3 - 6.4 V Open ShopTurn. The variants of technological solutions are compared with each other in the technical-economic evaluation. The pre-cast variant is better for manufacturing more than 50 pieces of the Sugar Bowls.
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Scala Programming Language and Its Use for Data Analysis
Kohout, Tomáš ; Bartík, Vladimír (referee) ; Zendulka, Jaroslav (advisor)
This thesis deals with comparing the Scala programming language with other commonly used languages for data analysis. These languages are evaluated on the basis of the following categories: data manipulation and visualization, machine learning and concurent processing capabilities. The evaluation then shows the strengths and weaknesses of Scala. The strengths will be demonstrated on application for email categorization.
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Vehicle response when using the Start-Stop system
Vaňková, Denisa ; Kohout, Tomáš (referee) ; Jelínek, David (advisor)
The diploma thesis deals with the research of vehicle response in case of using the Start-Stop system in passenger cars with manual and automatic transmission. Values measured using CAN-bus connection of the drivers using Start-Stop system are compared with values from identical vehicles without using the Start-Stop function. A device designed specifically for the purpose of these measurements is used as the control element of the measurements, operating on the basis of a wheel rotating uniformly with the movement of the vehicle and an optical sensor which detects the movement. The measured results are intended to demonstrate the response time of the vehicle using the start-stop function and to determine whether this system has an effect on the starting delay in normal traffic. By using CAN-bus data measurements, detailed start-up graphs are available for all the vehicles studied. The study found that it depends on the type of gearbox used in the vehicle, while with a manual gearbox, Start-Stop does not have a large impact on the flow of traffic in terms of the vehicle's response to the driver. For automatic transmission, it depends on its type, and the differences between individual starts, with the Start-Stop system on and off, differed considerably. The accuracy of the measurement was similar for both measuring devices, but the CAN-bus measurement is more useful, as it is possible to determine the exact course of the start from the obtained data. The manufactured measuring device is easier to operate and the evaluation of the run-up length is done automatically, immediately after the run-up. Based on this work, more extensive research can be carried out in the future, the purpose of which could be to categorize the run-off lengths by individual vehicles, which is particularly important for the purposes of accident analysis.
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Innovations in communication with customers of GW BUS a. s.
KOHOUT, Tomáš
This work is focused on the analysis of the current state, trends and preferences of customers in order to design a new mobile application for the company GW BUS a. s. The data analysis was performed in a questionnaire survey in which 130 respondents took part and 10 of whom were excluded. In the first part, the questionnaire focused on respondents' satisfaction with the IDOS mobile application. In the second part, the respondents were suggested possible innovative functions and were asked whether they would use the proposed function. Furthermore, these functions were consulted with GW BUS a. s. Based on the data, five innovative functions were designed for the new mobile application.
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Motor control testing and coordination and speed abilities
Kohout, Tomáš ; Přívětivý, Lubomír (advisor) ; Sovák, Libor (referee)
Title: Testing speed and coordination skills in the military environment: a systematic review Objective: Based on a literature search, find out which tests of speed and coordination skills are used in foreign armies. Methods: The presented work is done in the form of a systematic review. Web of Science, Scopus and PubMed databases were selected for searching articles. The search was performed using two search scripts, the first focused on speed and the second on coordination skills. 439 and 297 studies were retrieved from the search scripts and unsystematic searches. These studies were subsequently screened and removed according to the systematic search procedure. After final removal, 33 studies remained for speed and 23 for coordination. Results: The highest representation was found in tests focused on a combination of speed and coordination skills, especially agility tests. Of these, the most used tests are the Illinois Agility Test, the Pro-Agility Test, the 3x5 m shuttle run and the 15 m slalom. The second most represented group is the speed tests, which focus on sprints over various distances. There are 8 different tests in total, with the 20, 30 and 15 m sprints being the most represented. The fewest tests focused on coordination skills. Keywords: army, military, soldiers, cadets, recruits,...
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Modeling of meteorite impact
Takáč, Marian ; Kletetschka, Günther (advisor) ; Kohout, Tomáš (referee)
In Febuary 2013, in spectacular light and sound accompaintmen a meteorite hit the Russian Federation. Small fragment which landed in populated areas caused together with blust wave damage. The largest part broke the ice crust on the lake in outskirts of Chebarkul. The circular shaped hole gave rise to various conspiracy theories. About half of the year after impact the meteorite was lifted and conspiracy theories boken. The event immediately raised interest in the issue of the impacts of meteorites and phenomena associated with them. Processes when the meteor is passing trough atmosphere, impact craters, their origin and characteristics, computer models, types of meteorites and their origin. Or just a mystery of the hole in the ice crust of the lake Chebarkul. Science has got answers for such toppics. This paper is just trying to summarize them.
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Chemical and Physical Properties of Impact Glasses
Křížová, Šárka ; Skála, Roman (advisor) ; Kohout, Tomáš (referee) ; Macháček, Jan (referee)
Abstract This work deals with microstructural features, chemistry and the search for traces of a meteoritic component in proximal tektite-like glasses from the Zhamanshin impact structure (Kazakhstan; further abbreviated as ZIS), and tektites from two strewn fields - moldavites (Czech Republic) and Australasian tektites (Laos; further abbreviated as AAT). Detailed microstructural observations and subsequent chemical and mineralogical studies of various types of inclusions were also performed; these inclusions were mostly found in the studied types of glasses for the first time ever. The aim of this PhD thesis was to (i) describe the microstructure of all studied glasses with a focus on yet unobserved microstructural phenomena, and (ii) try to determine the admixtures of meteoritic components in these glasses. In addition, the available target rocks, which could be a source of moldavites or AAT, were also studied. The microstructures of the studied glasses mutually differ. This is due to a diversity of parent materials and different glass formation conditions occurring during a particular impact event. A new type of "composite splash-form" has been identified among the ZIS glasses, whose chemical composition does not fit into the previously defined groups of irghizites or basic "splash-forms". For...
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Scala Programming Language and Its Use for Data Analysis
Kohout, Tomáš ; Bartík, Vladimír (referee) ; Zendulka, Jaroslav (advisor)
This thesis deals with comparing the Scala programming language with other commonly used languages for data analysis. These languages are evaluated on the basis of the following categories: data manipulation and visualization, machine learning and concurent processing capabilities. The evaluation then shows the strengths and weaknesses of Scala. The strengths will be demonstrated on application for email categorization.
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Physical properties of meteorites and their role in planetology
Kohout, Tomáš ; Kobr, Miroslav (advisor) ; Petrovský, Eduard (referee) ; Funaki, Minora (referee)
Physical properties of meteorites and their role in planetology Tomáš Kohout Together with cosmic spherules, interplanetary dust particles and lunar samples returned by Apollo and Luna missions, meteorites are the only source of extraterrestrial material on Earth. They represent samples of various space bodies from asteroids to other planets. Some are remains of parent bodies, which completely disintegrated during giant collisions and no longer exist in the Solar System. The physical properties of meteorites, especially their magnetic susceptibility, bulk and grain density and porosity, have wide applications in meteorite research such as meteorite classification, studies of their origin, level of terrestrial weathering, shock history and in the estimation of the physical appearance oťtheir parent bodies - asteroids. For example, the comparison of a meteorite's density, porosity or magnetic susceptibility to that of a compositionally similar asteroid may reveal its internal structure. For such purposes, an expanded database of meteorite physical properties was compiled with new measurements done in meteorite collections across Europe using a mobile laboratory facility. However, the scale problem may bring discrepancies in the comparison of asteroid and meteorite properties. Due to inhomogenity, the physical...
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