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Electrical characteristics of gliding discharge for VOC decomposition
Jeřábek, Martin ; Sysel, Petr (referee) ; Bartlová, Milada (advisor)
The subject of this bachelor's thesis was to get familiar with the characteristics of plasma, its divisinon and diagnostics. In physics and chemismy plasma is considered to be, an ionized gas composed of ions, electrons (and possibly neutral atoms and molecules), which is produced by detachement of electrons from the atomic shell, or by dissociation and ionization of molecules. The plasma is often referred as the fourth state of matter. Attention was given to the description of various types of electric discharge, its characteristics and occurrence. One of the most idey known electrical discharges occurring in nature is lightning, a spark discharge, which occurs in the storm. Lightning is an electric discharge between centres of positive and negative charge of one or more clouds, between cloud and earth, or rarely between the cloud and the stratosphere. The greatest attention is paid mainly to gliding electric arc discharge, called Glide-Arc; it is a representative of on-thermal plasma formed by weakly ionized gas. It has many industrial applications, especially for its high energy efficiency, specific productivity and high selectivity of chemical reactions. Under low and atmospheric pressure, Glide-Arc represents a simple and non-expensive way of non-thermal plasma generation. The discharge is excited between two electrodes of different materials in the pressure range from very low pressures up to the pressures of the order of units of MPa. The gliding arc system consist of horn-gaps electrodes diverging in the direction of the working gas flow. After the application of DC or AC voltage, a breakdown occurs at the smallest distance between the electrodes, and a spark plasma channel drifts (“glides“) in the direction of the flowing gas. The final experimental part deals with the measurement of VA characteristics and oscillation characteristics of the current, and with the determinativ of gliding arc ignitron for selected of nitrogen and methane gases at various flow rates. The values of ignition voltage for variol mixtures of gases have been compared. Furthermore, the properties various combinations of gases at different gas flow rates have been evaluated. Measurements were carried out in the plasma laboratory of the Faculty of Chemistry BUT in the plasma reactor at the atmospheric pressure.
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Project Dokumentation and Quality Management ISO 9000
Jeřábek, Martin ; ISO, Antonín Krbušek, auditor (referee) ; Havlíková, Marie (advisor)
Implementation of Quality Management System according to the International Standards ISO 9000 is one of the ways of increasing the competitiveness and efficiency of organization. The objective of this study was to describe and eventually streamline creation, founding and completation of Project documentation. One part of submission was creation of web sites with information(s) about ISO 9000 system. The outcome of this study is a complex of changes and improvement of directions according to ISO 9000 in a particular company.
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Business Incubator
Jeřábek, Martin ; Pirochta, Josef (referee) ; Králová, Zuzana (advisor)
In my diploma thesis I designed a new office building in Brno. The building will function as a business incubator, so it will provide space for developing companies for favorable lease terms. While projecting the building I took into consideration future changes in dispositions. Part of the building has a basement and it has one underground and four aboveground floors. The building is designed as monolithic ferroconcrete unit and it has reinforcing perimeter walls with unit core. The ceiling is made of monolithic ferroconcrete panels. The building has flat rooftops, ventilated facade and is based on piles.
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Data acquisition - LabVIEW
Jeřábek, Martin ; Zůbek, Tomáš (referee) ; Šedivá, Soňa (advisor)
The main objective of this work is to create a program for automatic operation of measuring test track. The track is used for multi-hole velocity probes calibration. Normalized orifice plate is used as measurement standard. The program requires the user to enter certain information, which are not measured directly e.g. the values of measuring resistors, static air pressure. After entering this information, measurement can be started. The measurements are carried out simultaneously on the both flowmeters and on the thermomether Pt 100. The actual density of flowing medium is calculated from the measured temperature. Because the measurement is parallel, the calibrated flowmeter can be calibrated during the measurement.
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Fiscal policy and the business cycle in the Czech Republic
Jeřábek, Martin ; Ševčík, Miroslav (advisor) ; Řežábek, Pavel (referee)
This thesis deals with short-term relationship between fiscal policy and the real economy. Thesis is divided into three thematic units. In the first part through the analysis of studies examining the size of fiscal multipliers concludes, that depending on the assumptions and selected time period is the size of the multipliers greater in economic recessions, at zero interest rates of central banks or bigger taciturnity of the economy. The multipliers for the Czech Republic are low and did not exceed the value of one. The thesis also analyzes the development of public finances in the years 1997 - 2013 and identifies as their basic problem the structural nature of deficits. As a possible tool to improve the inclination of public finance to the budget deficits are identified fiscal rules limiting public spending. This rule is fully compatible with the Stability and Growth Pact and meets the basic requirements - the clarity and flexibility.
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The Economic analysis
Jeřábek, Martin ; Klečka, Jiří (advisor) ; Boukal, Petr (referee)
The aim of this thesis is to perform an analysis of MODUS ltd. which will be based on evaluation of its economic performance and finding out the causes of the current situation. In the first part, there is basic theoretical determination of the analysis and all of its appurtenances. The second part emphasizes on an extensive characteristics of the chosen company, so that it is possible to perceive the calculated determinants from the right perspective. The third part includes the performance of the analysis of a given company and a well-arranged recording and subsequent evaluation of the results obtained. The thesis is concluded with the evaluation of the economic situation of the company based on the results of the analysis and with the recommendation of particular measures which would increase the economic efficiency and effectiveness in the future. Furthermore, there is a summary of models and determinants used with an indication of their advantages and disadvantages.
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The economic reforms in Czechoslovakia and GDR during the sixties of 20th century
Jeřábek, Martin ; Jakubec, Ivan (advisor) ; Skřivan, Aleš (referee)
The theme of this thesis is economic reforms in Czechoslovakia and German Democratic Republic (GDR) during the sixties of 20th century. In the first part I focus on the progress of economy in Czechoslovakia. After major problems with planning came the need to implement fundamental reforms of the system. The primary reform steps and also the attitudes of the political leading to implement the steps are interpreted here. I focus on the final phase of reforming process in 1968 and its termination by military intervention in August of 1968 as well. In the following part the complicated relations in post-war East Germany, where the similar economic development to Czechoslovakia took place in the fifties, are interpreted. The pursuit of equalization with West Germany and the regime dissatisfaction of the population compelled the main representatives of GDR to reform the system of leading economics. Despite good results, which the new system brought, it was not able to keep and deepen the system. The aim of the thesis is to answer reasons why the reforms in both countries did not succeed.
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Vyhodnocení finanční výkonnosti podniku Modus s.r.o.
Jeřábek, Martin ; Neumaierová, Inka (advisor) ; Mann, Berthold (referee)
Práce se věnuje vyhodnocení finanční výkonnosti podniku Modus, s.r.o. Ve sledovaném období (od r. 2004 do r. 2006) hodnotí jeho finanční situaci a porovnává ji s konkurencí. K tomu využívá různých metod finanční analýzy: vertikální a horizontální analýzu, bilanční pravidla, poměrové ukazatele, rychlé bonitní a bankrotní indikátory, ekonomickou přidanou hodnotu a její rozklad pomocí modelu INFA. Práce obsahuje popis podniku a tyto informace o podniku využívá při hodnocení ukazatelů. V závěru je provedeno srovnání s odvětvím s využitím modelu INFA.
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