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Proposal of Information System Innovation in Regional Development Agency
Komárek, Jan ; Smítal, Petr (referee) ; Dydowicz, Petr (advisor)
Bachelor’s thesis analyzes information system in Regional Development Agency for Central Moravia, which is currently going through a management change and reorganization. Contemporary information system is not effective, well organized and there are no sufficient rules for using. Based on common analyze and in accordance with agency requirements there are made a few proposals of information system innovation.
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Speed Increasing for Track Section Čejč - Hodonín
Látal, Jan ; Komárek, Jan (referee) ; Svoboda, Richard (advisor)
This bachelor´s thesis will examine the possibility of increasing the line speed in the track section Čejč - Hodonín. The proposed rate increase will be considered in two variants, the first version based on the retention of geometrical parameters of the current track, the second option will involve changes of the track geometry parameters. These changes, however, may not cause significant interference with the body lines. Both cases must also be seen in the speed limit in areas of railway crossings, railway branching, position lights, etc., or its possible proposed the change of this objects.
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Experimental Analysis of Scaling Methods for LP
Komárek, Jakub ; Koutecký, Martin (advisor) ; Vegh, Laszlo (referee)
In his recent work, Dadush et al. introduced the condition number κ for constraint matrices of linear programming and devised an algorithm to approximately optimize κ by scaling columns of the constraint matrix. We follow up on his work by implementing this scaling algorithm. We have used our implementation to obtain an approximate rescaling of some linear programming instances available from public datasets. Finally, this work shows results of experiments evaluating the effects of the obtained rescalings on the runtime of some available linear programming solvers. 1
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Estimating the Effect of Teaching Assistant Support on Educational Outcomes
Komárek, Jakub ; Korbel, Václav (advisor) ; Pertold-Gebicka, Barbara (referee)
Charles University Faculty of Social Sciences Institute of Economic Studies MASTER'S THESIS Estimating the Effect of Teaching Assistant Support on Pupils' Educational Outcomes Author: Jakub Komárek BSc. Study program: Economics and Finance Supervisor: PhDr. Václav Korbel Ph.D. Academic Year: 2022/2023 ii Declaration of Authorship The author hereby declares that he compiled this thesis independently; using only the listed resources and literature, and the thesis has not been used to obtain a different or the same degree. The author grants to Charles University permission to reproduce and to distribute copies of this thesis document in whole or in part. Prague, 1st March 2023 Jakub Komárek BSc. ii iii Acknowledgments The author is grateful especially to prof. PhDr. Tomáš Havránek Ph.D., PhDr. Jiří Schwarz Ph.D., and especially to a supervisor PhDr. Václav Korbel Ph.D. for their advice, support, and, most of all, patience. This endeavour would not be possible unless the Ministry of Education, Youth, and Sports of the Czech Republic kindly provided necessary data in the form of school reports. iii iv Abstract The thesis provides an analytical-quantitative approach towards estimation of the effect of teaching assistant support on educational outcomes. We used nation-wide data of the Czech school system and three...
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Bullyng at private school And Its conseguences
KOMÁREK, Jan
The bachelor thesis brings empirical knowledge in the field of bullying in the school environment. It is divided into theoretical, analytical and design part. The theoretical part defines the basic concepts such as bullying, bullying, aggression and explains the forms and origin of bullying. It further specifies ways to detect bullying and explains possible personality characteristics of bullying participants. It also describes bullying from the perspective of the current legislative system.
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Aircraft system display design
Komárek, Jakub ; Vlk, Jan (referee) ; Chudý, Peter (advisor)
This thesis is dealing with the design and implementation of the modern systems into the cockpit of a civilian aircraft Boeing 737 MAX. Specifically speaking, the implemented part of the cockpit is an overhead panel which has been redesigned to a digital form including the touch control components. The implementation was made as a prototype connected to the X-Plane 11 simulator. The prototype was then user tested and the findings from the testing are summarized at the end of the thesis.
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Novel Approaches to the Application of Electrochemical Volatile Compounds Generation in Spectrometric Methods
Červený, Václav ; Rychlovský, Petr (advisor) ; Spěváčková, Věra (referee) ; Komárek, Josef (referee)
Various possibilities for the use of electrochemical generation of volatile compounds for the determination of trace and ultratrace quantities of elements using atomic absorption spectrometry and optical emission spectrometry, respectively, were studied in this work. The Thesis is divided into four thematic sections. Electrochemical cold mercury vapor generation is common to the first two parts. The third part is devoted to electrochemical generation of the volatile form of cadmium and the last part deals with the use of the electrochemical hydride generator as a derivatization unit for speciation analysis of arsenic compounds. The optimization of each individual determination was carried out including, for example, various designs of the generator of volatile compounds (forms) of the analyte, the changes in the design of the gas-liquid separator, optimization of the concentration and the flow rate of all the solutions and the carrier gas. However, the value of the electric current employed was the most important parameter. In the first section, the in-situ trapping system of the cold mercury vapor generated in the graphite furnace (with the inner surface covered with a gold foil) of the atomic absorption spectrometer was also designed and optimized. The absolute limit of detection, 80 pg, was...
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Optimization of generation and atomization of arsines for speciation analysis by atomic fluorescence spectrometry
Marschner, Karel ; Dědina, Jiří (advisor) ; Komárek, Josef (referee)
Speciation analysis of arsenic based on selective hydride generation and detection by atomic fluorescence spectrometry have been studied in this work. It was found that under optimum conditions of atomization in the flame in gas shield atomizer, sensitivity was approximately twice higher and detection limit was about four times lower compared to miniature diffusion flame, which is a standard atomizer for atomic fluorescence spectrometry. The conditions to generate hydrides from both inorganic forms of the arsenic, i.e. from arsenite and arsenate, with the same efficiency have been found in the batch arrangement, by using 1 mol dm-3 hydrochlorid acid and 1% solution of tetrahydridoborate. To determine only trivalent form, TRIS buffer at pH 6.00 was used together with 1% sodium tetrahydridoborate. The detection limits found for inorganic arsenic, i.e. for arsenite and arsenate, respectively, were 15 ng dm-3 and 9 ng dm-3 . It was found that in the batch arrangement under these conditions it is possible to generate corresponding hydrides methylarsonate and dimethylarsonate with the same efficiency as from the inorganic form. Finally, it was found when slightly changing the gas-liquid separator design in order to introduce the mixture of tetrahydridoborate with hydrochloric acid to the bottom of the...
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Hydride generation study for arsenic speciation analysis with AAS and AFS detection
Svoboda, Milan ; Dědina, Jiří (advisor) ; Spěváčková, Věra (referee) ; Komárek, Josef (referee)
The general aim of this work was a development of methodology and instrumentation for speciation analysis based on the combination of the selective generation of substituted hydrides with atomic absorption or atomic fluorescence spectrometry detection. The first topic of this work was the development of methodology and instrumentation for arsenic speciation analysis based on selective generation of substituted arsines with trapping in the cryogenic trap (U-tube packed with chromosorb) with AAS detection (HG- CT-AAS). The conditions of the selective hydride generation approach as well as working procedure of the cryogenic trap were optimized (appropriate approach for hydride generation, set up of heating program of cryogenic trap, new dryer - cartidge with NaOH, elimination of unspecific absorption, decreasing of the detection limits). The second important part of the work lay in applying of the developed method for arsenic speciation analysis in a homogenized mouse liver tissue. The direct slurry sampling to hydride generator was develop. Moreover the information about oxidation state (iAsIII,V , MAsIII,V a DMAsIII,V ) was obtain. The effect of relevant experimental parameters such as tetrahydroborate concentration, TRIS buffer concentration and time of pre-reduction of the samples by L-cysteine...
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Methodology of plastic bookbindings survey in the modern library collection
Vávrová, Petra ; Neoralová, Jitka ; Novotná, Dana ; Šipošová, Nikola ; Sharai, Hanna ; Knotek, Vítězslav ; Komárek, Josef, ; Brožek, Jiří, ; Kalousková, Radka ; Malinová, Lenka
Cílem předložené metodiky je návodný postup, jak pomocí uvedených technik a metod získat informaci o složení a charakteru syntetických materiálů ve fondu, identifikovat druh materiálu a na základě informací z dalších zdrojů získat přehled o rizicích ovlivňující dobrý fyzický stav fondu. Získané informace umožní kvalifikovaně rozhodnout o způsobu další péče o tyto sbírky. Představená metodika je zaměřena na identifikaci druhů plastů vjemovou i instrumentální, která je nezbytná k eliminaci negativních důsledků degradace plastů v knižní vazbě.
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