National Repository of Grey Literature 122 records found  beginprevious77 - 86nextend  jump to record: Search took 0.01 seconds. 
Decomposition and Forecast in Time Series
Šramková, Kristína ; Holec, Tomáš (referee) ; Bednář, Josef (advisor)
Bachelor thesis is focused on statistic methods for analysis and modelling time series. In particular decomposition techniques, which decompose time series into particular components and model trend component to predict future values. First part of thesis is focused on summary of essential knowledge of regression, basic properties of time series and their decomposition models. Hereinafter are discussed models of trend curves. In conclusion the mentioned methods are applied on real data and its modeling in software Statistica.
Effect of surface electrode type on quality of decopmposition of surface EMG signal
Strusková, Edita ; Otáhal, Jakub (advisor) ; Michalec, Radim (referee)
Title: Effect of surface electrode type on quality of decomposition of surface EMG signal Objectives: The aim of this thesis is to evaluate the effect of surface electrode type, which was used for EMG record, on the quality of decomposition of surface EMG signal using decomposition software EMGlab. Methods: The form of the thesis is an experimental essay. It was detected an EMG signal from one healthy volunteer during mild cyclic contraction. It was used three different types of electrodes (standard surface electrode, tetrode, tetrode with saw-off spikes) for EMG signal detection. These signals were decomposed in program EMGlab. The results were processed in program MS Excel, compared with each other and graphically displayed. Results: The measurement verified a hypothesis which claimed that the used type of electrode affects the quality of automatic decomposition. The best results of automatic decomposition provide the signal gained from the standard surface electrode. Key words: action potential, decomposition, surface electrodes, EMG signal, tetrode, electromyography
Analysis of Mortality Development in Russia using various decompositon methods
Kocová, Markéta ; Hulíková Tesárková, Klára (advisor) ; Burcin, Boris (referee)
Analysis of mortality development in Russia using various decomposition methods Abstract The aim of this thesis is to analyze and evaluate mortality development in Russia in last 50 years by using various decomposition methods. The first part presents the method of decomposition of the difference between two demographic indicators (E. Kitagawa's method or methods from E. Arriaga, R. Pressat and J. Pollard). In the second part mortality development in Russia is analyzed by using methods that decomposed the value of demographic indicators in a given year. Mortality is divided into senescent and background component by using the Gompertz-Makeham formula and by using the logistic model. Afterwards, avoidable and unavoidable mortality and mortality due to endogenous and exogenous causes of death is analyzed. Hypotheses, set out in the introductory chapter, are verified by using different decomposition methods. Using multiple methods of decomposition enable to obtain a more complex view of the evolution of mortality in the observed period so that could be viewed from multiple perspectives and identify specific population trends in Russia. Keywords: mortality, Russia, decomposition, senescent and background mortality, avoidable mortality, endogenous, exogenous, causes of death, mortality crisis
Position of Minorities in the U.S. Labor Market
Svoboda, Jan ; Pertold-Gebicka, Barbara (advisor) ; Avdulaj, Krenar (referee)
This thesis deals with the phenomenon of racial discrimination in the U.S. labor market. The first part outlines the existing theories of discrimination and history of immigrants' residence in the U.S. It also brings some statistics from the U.S. labor market and finally reviews some literature in the field of labor market discrimination. The second part of the thesis is devoted to the empirical analysis of wage discrimination in the U.S. using the American Community Survey 1980 and 2007. With the help of Oaxaca-Blinder decomposition we break down the log-wage differential between whites and other racial groups into two parts. The first, explained, part is the part of the differential that can be explained by differences in average race characteristics. The other, unexplained, part is the part of the differential that remained unexplained. That part is then assigned as a result of discrimination. We find that while in 1980 Asians earned on average 5% more than whites, by 2007 this difference reached 15%. 15% - 21% of this difference remained unexplained. The opposite situation is observed in the case of Hispanics and Blacks. While in 1980 both, Hispanics and Afro-Americans, had on average 10% lower wage than whites, by 2007 this difference reached as much as 30%. In case of Afro-Americans, 50% -...
ON THE PASNIK
Siegelová, Kateřina ; Vlková, Veronika (referee) ; Klímová, Barbora (advisor)
The topic of my thesis On the Pasník a time and decomposition. I have produced small houses from natural materials and placed them in a forest. The subject of my work is to record the flow of time. The outcome of my work is time based large-formal drawing. The buildings on the drawing gradually collapse and disappear. Thus I have created the time drawing.
Molecular biology and ecology of microbial decomposition of plant-derived biopolymers in forest ecosystems
Žifčáková, Lucia ; Baldrian, Petr (advisor) ; Uhlík, Ondřej (referee) ; Bárta, Jiří (referee)
The abilities of fungi and bacteria to degrade simple and complex carbon compounds derived from different sources, such as root exudates, litter, soil organic matter or fungal mycelium were studied in this dissertation. Knowledge of functional traits, especially degradation abilities of fungi and bacteria, are important for deciphering the black box of microbial functioning in topsoil and thus aiding in modeling and predicting future directions of microbial communities development in face of global changes. Among fungal cultures form culture collection representing strains with different taxonomy and ecophysiology, the ecophysiology of fungi was more important in manifestation of functional traits than taxonomy. Among bacterial isolates from the litter and soil of spruce forest, Acidobacteria were confirmed to express multiple decomposition enzymes in high rates in vitro and were also abundant and active degraders in acidic spruce forest soil. The expression of degradation capacities of both bacteria and fungi were further studied in situ in spruce forest topsoil, that represents an important environment due to the ubiquity of coniferous forests on the Northern hemisphere. There is an obvious gap of knowledge, when comes to our understanding of seasonal effect on microbial functioning, and this is...
Parallelisation of Ultrasound Simulations on Multi-GPU Clusters
Dujíček, Aleš ; Kula, Michal (referee) ; Jaroš, Jiří (advisor)
This work is part of the k-Wave project, which is a toolbox designed for time ultrasound simulations in complex and heterogeneous media. The simulation functions are based on the k-space pseudospectral method. The goal of this work is to compute these simulations on graphics cards using local domain decompostion. Thanks to decomposition we could compute these simulations faster, and on larger data grids. The main goal of this work is to achieve efficiency and scalability.
Odhad disparit v zacházení s cizizími statními příslušníky v trestním procesu v České Republice
Vávra, Jan ; Dušek, Libor (advisor) ; Kovanda, Lukáš (referee)
This thesis examines the effect of foreign nationality on the outcomes of criminal process in the Czech Republic. Foreign citizens are overrepresented by 2% compared to their share in population in all stages of the criminal process, suggesting possible discrimination by domestic authorities. Using rich case level datasets from 2005 to 2015 observed gaps are decomposed to part explained by a difference in the objective characteristics of the cases and unexplained part, suggesting possible inequality of treatment. Foreigner gaps in probability of charge, probability of conviction, probability of imprisonment, length of the sentence and probability of release from prison on parole are decomposed. Majority of observed disparities in the outcomes can be attributed to higher involvement of foreigners in more serious crimes compared to nationals. Unexplained disparities remain in probability of imprisonment and probability of release on parole, suggesting possible unequal treatment in these two outcomes.
Co3O4 Supported on Different Supports for N2O Decomposition.
Klyushina, A. ; Pacultová, K. ; Jirátová, Květa ; Obalová, L.
In this work Co3O4 catalysts supported on different kind of shaped supports (rings, quadrulobes) were prepared by incipient wetness impregnation method. As support materials commercial supports made of MgAl oxides, Al2O3 and TiO2 were used. The catalysts were characterized by AAS, XRD, Raman, FTIR, SEM, H2-TPR and nitrogen adsorption methods and tested for nitrous oxide decomposition.
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Plný tet: SKMBT_C22016090211341 - Download fulltextPDF
Preparation of Magnesium Silicide from Scrap for Hydrogen and Pure Silicon Production.
Bumba, Jakub
This work is focused on preparation of magnesium silicide to purify silicon via waste-free route.
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Plný tet: SKMBT_C22016053109281 - Download fulltextPDF

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