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The Analysis of Factors Affecting Electricity Consumption
Seiml, Jan ; Mařica, Lukáš (referee) ; Toman, Petr (advisor)
The aim of this thesis is to describe the course of consumption of electricity. One of the feasible ways of description is statistical analysis, which enables to calculate statistically significant factors and their combinations that contributed to the course of consumption of electricity. These factors may be used for modulation of future electricity consumption, and therefore also for long-time prediction. The second chapter discusses the expansion of electricity usage in the Czech Republic from the turn of the 19th century until nowadays. The chapter describes the development of transmission system, development of electricity consumption in the sectors of the national economy, possibilities of using electric energy, and overall balance of electricity and sources of energy. The third chapter presents an overview of usage and consumption of electrical energy in the neighboring European countries as well as in the most interesting countries of the World. The fourth chapter contains statistical analysis. The first part of the chapter details a list of the analyzed quantities of individual consumptions, of the investigated factors, and the analyzed countries. Further, the chapter explains the method of statistical analysis via using simple and multiple regression and its subsequent application and evaluation for the Czech Republic and the others European countries. According to the result, it is GDP that has the main impact on the trends in the course of consumption of electricity. However, it is necessary to consider other factors influencing the consumption of electricity, too, and not rely solely on GDP in terms of long-time prediction of electricity consumption. The fifth chapter discusses the reduction of electricity consumption and savings, which can be both political and macroeconomic result. Quantification of savings is not always unequivocal and any cost-saving actions can lead to an increase in electricity consumption, which can, in effect, be bigger than any possible savings.
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Assessing of the Financial Situation of a Company Using Time Series
Pech, Jan ; Císařová, Miluše (referee) ; Doubravský, Karel (advisor)
Abstract Master’s thesis about „Assessing of the financial situation of a company using time series” focuses on a detailed assessment of the economic situation of the state-owned enterprise DIAMO between years 2005–2014. The theoretical part describes methods and indicators of strategic, financial and statistical analyses, which are in the next chapter sequentially applied on the analysed company. The content of the final chapter introduce proposals of elimination of the risk areas of the state-owned enterprise, while the greatest emphasis will be applied on the issue of rising shares of receivables and liabilities to total assets and ensuring positive economic result in corporate profit. The main object of this master’s thesis is assessing financial efficiency of state-owned enterprise DIAMO, afterward identifying risk areas and introducing possible precautions, which will lead to overall greater economic health of the enterprise itself.
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Testing of Cutting Tools for Multi-Axis Machining at Machining Centres
Dvořáček, Jan ; Mrkvica, Ivan (referee) ; Janáč, Alexander (referee) ; Píška, Miroslav (advisor)
The thesis is focused on testing of the cutting tools for machining on five axis machine tools and possibility of implementation of designed experiments in this area. The theoretical section focuses attention on analysis of specific features during five axis machining, including chip cross section and particularity of tool testing under high speed cutting conditions with consideration of dynamic stability of cutting tools. In the thesis force loading of the tool is discussed as well as its measurement process, considering force development caused by tool wear and data analysis. Description of designed experiment and its application to the area of tool testing is included as well. All theoretical predictions are followed by experimental verifying by extensive number of experimental tests, including evaluation of cutting tool condition, influence of hard coatings on cutting power of the tools, etc. For each of testing conditions are designed specific methods of processing of gathered data as well as evaluation of power of the cutting tools. Gathered data were processed by means of statistical evaluation and by statistical methods of designed experiments. The thesis contains also the extensive number of records and analysis, documented by means of light microscopy as well as electron microscopy.
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Evolutionary engineering of polyhydroxyalkanoates producing bacteria
Nováčková, Ivana ; Kovalčík, Adriána (referee) ; Obruča, Stanislav (advisor)
This diploma thesis deals with the application of evolutionary engineering to PHA producing bacterial strains. The aim of the thesis is to prepare strains adapted to levulinic acid, a selected stress factor, by methods of evolutionary engineering, and then to characterize these strains. The theoretical part deals with evolutionary engineering and polyhydroxyalkanoates predominantly. The bacterial strain Cupriavidus necator H16 was used for evolutionary experiments. Levulinic acid and levulinic acid in the presence of the MMS mutagen were applied to prepare adapted strains. Selection of mutants was evaluated on the basis of growth potential and PHA content in biomass. Polymers produced by five obtained PHA-producing mutants and control were characterized using GC-FID, SEC-MALS, DSC and FT-IR. It was found that a higher content of 3HV in the copolymer led to a lower crystallinity and hence to a lower melting point, nevertheless, only the copolymer of the M0151 strain did not fit this trend. In addition to the characteristics of the polymers, the strains themselves were evaluated from the biochemical point of view by determining the activities of selected enzymes of the citrate, glyoxalate and 2-methylcitrate cycle, selected enzymes generating NADPH, levulic acid catabolism enzyme and PHA biosynthesis enzymes. On the basis of the obtained data, the possible adaptation strategies were discussed, when the E0575 strain was most differentiated from original culture. Values of specific enzyme activities were subjected to AHC and PCA statistical analysis methods.
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Automatic Generation of Steps for DDR
Skála, František ; Glembek, Ondřej (referee) ; Černocký, Jan (advisor)
The goal of this work is to draft methods suitable for automatic creation of step-files from music files for a DDR computer dance game. This problem is divided into two main parts - beat detection, thus determining the song tempo, and determination of steps itselves. Beat detection is based on detection of energy growths in particual frequency subbands and following statistical alignment of results. Step creation works similarly, but it focuses on detection of all intense moments of music and contains a logic for placing steps into different directions. Testing by users showed that application has the potential to address players seeking set of simple steps for their favourite songs. The quality of beat detection gives field for application of these methods even beyond scope of example application. This document also suggest a few possible improvements of used methods.
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Assessing Selected Indicators of a Company Using Statistical Methods
Kozina, Tomáš ; Kubiš, Martin (referee) ; Doubravský, Karel (advisor)
This bachelor thesis is focused on evaluation of financial analysis indicators of the chosen company and afterwards on analysis using statistical method for development to the future in the Rotana a.s. company. In the first part of the paper there are basic notions, theory about financial analysis‘s indicators and statistical methods. The second part is analytical. It focuses in particular on realistic performace evaluation of state of the company. This part is finished by personal suggestions for beneficial development based on analysed results.
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Manufacturing and defects of steel castings
Smilovský, David ; Čamek, Libor (referee) ; Záděra, Antonín (advisor)
A content of this thesis is an analysis of a steel castings production mismatch in Tatra Metallurgy foundry. Most common defects found on castings are gas holes. Thesis shows a theoretical research on casting defects caused by gases in steel castings. It also describes melting and degassing problematics of molten steel and procedures to reduce gas contents. The last part of theoretical research describes oxidation of steel in contact with silica mold. Practical part of thesis analysis production of steel castings to determine the cause of origin of gas holes. Main attention is paid to mold mixture, chemical composition, casting temperatures and casting time. The last chapter metallographically analysis two defected castings to determine the origin of defects. Main attention is paid to shape and chemical composition of gas holes and to morphology of steel inclusions.
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Analysis of the meteorological dates
Votavová, Barbora ; Čížek, Martin (referee) ; Rozman, Jiří (advisor)
The aim of this study is to recognize structure of data from the meteorological station, choose useful programme for its analysis and make a theoretical analysis and graphics. The work describes the collection of data from meteorological stations, data stucture, meteorological elements, their measurement and selection of appropriate statistical program. Practical part includes charts with commentary. Conclusion summarizes the results of the analysis.
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