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Analysis and modelling the changes of water quality in the Olšava river basin.
Kaiglová, Jana ; Langhammer, Jakub (advisor) ; Kliment, Zdeněk (referee)
The main goal of the thesis is to create an accurate model of the current state of water quality modelling in the river basin. The basin of the Olšava River, as found in the bachelor thesis "Analysis of Water Quality in the Basin", is polluted with large concentrations of total phosphorus PTot. The master thesis analyses sources of nutrients in the basin that is mainly listed in the vulnerable areas indentified under the Nitrates Directive 91/676/EEC, on the protection of waters against pollution caused by nitrates from agricultural sources. For the water resources management and environmental policy is crucial to recognize distribution of pollution sources throughout main categories. The thesis is concerned with the seasonal variability of the average mass concentrations along the river channel. Broadly used mathematical modelling software of water quality is discussed in the sense of reliability, availability and user interface. Last but not least is a suggestion of two improvements of the water quality based on the MIKE Basin modelling software. The main aim of these proposals is to be realistic in the economical and environmental sense. Proposals consider both in point and non-point sources. Key words: Mathematical modelling, MIKE Basin, Water Quality, Water Quality models, Hydrology, Olšava
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Modelling natural catastrophes in insurance
Varvařovský, Václav ; Zimmermann, Pavel (advisor) ; Justová, Iva (referee)
Quantification of risks is one of the pillars of the contemporary insurance industry. Natural catastrophes and their modelling represents one of the most important areas of non-life insurance in the Czech Republic. One of the key inputs of catastrophe models is a spatial dependence structure in the portfolio of an insurance company. Copulas represents a more general view on dependence structures and broaden the classical approach, which is implicitly using the dependence structure of a multivariate normal distribution. The goal of this work, with respect to absence of comprehensive monographs in the Czech Republic, is to provide a theoretical basis for use of copulas. It focuses on general properties of copulas and specifics of two most commonly used families of copulas -- Archimedean and elliptical. The other goal is to quantify difference between the given copula and the classical approach, which uses dependency structure of a multivariate normal distribution, in modelled flood losses in the Czech Republic. Results are largely dependent on scale of losses in individual areas. If the areas have approximately a "tower" structure (i.e., one area significantly outweighs others), the effect of a change in the dependency structure compared to the classical approach is between 5-10% (up and down depending on a copula) at 99.5 percentile of original losses (a return period of once in 200 years). In case that all areas are approximately similarly distributed the difference, owing to the dependency structure, can be up to 30%, which means rather an important difference when buying the most common form of reinsurance -- an excess of loss treaty. The classical approach has an indisputable advantage in its simplicity with which data can be generated. In spite of having a simple form, it is not so simple to generate Archimedean copulas for a growing number of dimensions. For a higher number of dimensions the complexity of data generation greatly increases. For above mentioned reasons it is worth considering whether conditions of 2 similarly distributed variables and not too high dimensionality are fulfilled, before general forms of dependence are applied.
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India: poverty as an obstacle to further development
Lauberová, Petra ; Steinmetzová, Dana (advisor) ; Pavlík, Petr (referee)
The bachelor thesis examines a relationship between the growth of Indian economy, reducing of poverty in the country and the need to raise the capacity and quality of the local educational system. The Republic of India currently occupies second position in the ranking of the fastest growing economies in the world. Its economic success is largely controlled by the output of the tertiary sector, which is difficult for a qualified workforce. Unfortunately, finding qualified workers in India to fill positions that are in demand is very challenging. The demand for education grows only with raising of the incomes of the population and therefore poverty becomes an obstacle to further development in the country. The first chapter of the thesis defines the concept of poverty in general, provides different ways how to measure it and represents some global concepts and strategies for combating it. The second chapter describes the evolution of the Indian economy since independence to the present and focuses on areas which have caused its upsurge. The chapter also examines how current crisis has influenced these areas and provides some characteristics and facts about poverty in India. The final chapter evaluates the Indian educational system, pointing out its weaknesses and outlines the solutions that would enable its access to the wider sections of the population and improvement of its quality.
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Virtualisation of Surveillance Systems
Koňas, Jakub ; Žemlička, Michal (referee) ; Kopecký, Michal (advisor)
Title: Virtualisation of Surveillance Systems Author: Jakub Koňas Department: Department of Software Engineering Supervisor: RNDr. Michal Kopecký, Ph. D. Supervisor's e-mail address: Michal.Kopecky@mff.cuni.cz Abstract: This thesis studies the procedures in the field of security, building and lifesafety management focused at rising necessity of securing buildings in geografically large areas. The opening chapters of the thesis explain the principles of facility management relevant to security and present current progress in the field. It creates new comprehensive source of information based on the experience of security specialist that Czech languge lacks. The following chapters define new terms in the field of security - large area (LA) and securing the LA (SLA) - and specify the essential qualities of SLA systems. Subsequent part of the thesis discusses possible architecture of the SLA system and proposes own solution based on ideas of service architecture and OPC. The thesis contains partial implementation of the crutial element of the framework - the virtual device. The final chapters demonstrates needed qualities of the framework using its sample application. Keywords: surveillance system, security, large area, virtual device, framework
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Yellowhammer as a model species for studies on passerine dialects
Diblíková, Lucie ; Petrusková, Tereza (advisor) ; Procházka, Petr (referee)
Even though birdsongs and bird dialects have been subject to considerably intense scientific research, the domain of bird dialects is still worth attention of scientists. There is a large number of hypotheses about the emergence of bird dialects which separately or combined explain their origin. Dialects can be classified on the basis of the structure of a birdsong which they are related to or according to a geographical scale (micro and macrodialects). Research on bird dialects belongs to such type of studies that require great amount of data and thus large amount of time and finance is needed. Nonetheless, this obstacle can be avoided by involving general public into the research, however choosing a suitable model species is necessary. Yellowhammer (Emberiza citrinella), which was chosen in this study, is undoubtedly a convenient species for its common occurrence and distinguishable birdsong. Yellowhammer males sing during a large part of the season and their dialects can be easily recognized. Moreover, some scientists differentiate between macrodialects, that should be divided across western and eastern Europe, and could be used to make the research more attractive for general public. Till now yellowhammer dialects have been thoroughly explored in Denmark and in some parts of Germany, but in other...
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Marketing research on the satisfaction of spectators sporting event High Jump in 2011
Machutová, Tereza ; Šíma, Jan (advisor) ; Ruda, Tomáš (referee)
Title: Marketing research on the satisfaction of spectators sporting event High Jump in 2011 Objectives: The aim of my work is to make the marketing research on satisfaction of spectators by questionnaire survey and to suggest solution based on research results, which could lead to an improvement in the areas criticized this event. Method: The method of personal questioning was chosen for the research. The sample of research was chosen randomly from the basic set of spectators. Results: The values obtained are organized in tables and graphs in result section. There were found unsatisfied spectators in each of the examined areas, so the large room for improvement is on the event. Overall, spectators were satisfied with the event. Key words: Sporting event, marketing research, satisfaction
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Endophytic fungi in above-ground tissues of plants of the family Ericaceae
Koudelková, Barbora ; Koukol, Ondřej (advisor) ; Kolařík, Miroslav (referee)
Many studies focus on endophytic fungi. However, above-ground tissues of plants of the family Ericaceae are not largely examined. Most of the literature concerns the fungi forming ericoid mykorhiza. This bachelor thesis sums up the diversity studies of the endophytic fungi in the family Ericaceae, compares the frequency and the overlap of fungi in different host plants and geographical regions and also the occurence of fungi in living and dead plant tissues. The methods of fungal isolation and identification are accented.
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Summary of the taxonomy of the genus Helix.
Korábek, Ondřej ; Juřičková, Lucie (advisor) ; Král, David (referee)
Despite the genus Helix Linnaeus, 1758 (Gastropoda, Pulmonata) comprises large and common land snail species, it is rather neglected by taxonomists. A vast number of species and subspecies level taxa were described along 19th century, most of them currently not considered as valid. Nevertheless, there remain doubts about species delimitation. It is obvious, that there is great morphological variability in some species, but little is known about its taxonomic value. Today, about forty valid species are recognized. The diversity center of this genus is situated in northeastern Mediterranean. The distribution data of particular taxa are fragmentary and ecology of some species is largely unknown. No collections are still available from extensive areas, thus completion of field collecting can lead to changes in status of some taxa or perhaps even to description of new species. This work is based on the review of available literature and partly also on the study of collection materials. It provides a list of available names in the genus Helix in its present sense. The problems of traits used for species identification as well as weak points of current knowledge of diversity of the genus Helix are briefly discussed.
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Mathematical Analysis of Fluids in Large Domains
Poul, Lukáš ; Feireisl, Eduard (advisor) ; Pokorný, Milan (referee) ; Vodák, Rostislav (referee)
This thesis contains a set of articles concerned with flow of a viscous, compressible and heat conducting fluid in large domains. In the first part of the thesis, the existence of the weak solutions in unbounded domains is studied. The results follow each other in the way they were obtained through the time, and range from a simple extension to bounded domains with Lipschitz boundary up to the most general existence theorem for fluid flow in general open sets. The existence results are supplemented with the study of existence of weak solutions in the unbounded domain case with prescribed nonvanishing boundary conditions for density and temperature at infinity. The last contribution then concerns with the low Mach number limit in the compressible fluid flow.
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Registrace obrazových korespondencí získaných z více zdrojů
Cáha, Matěj ; Pelikán, Josef (referee) ; Buriánek, Jan (advisor)
In the present work we study use of graph matching algorithms for registration of important image points obtained from di erent sources. We especially focus on acquiring more precise data for nal 3D model reconstruction from a large set of images with already known corresponding points. We give a short overview of graph matching problem including de nitions, computational complexity and various approaches and examples of using graph matching algorithms for solving various problems in many elds. Then we propose our algorithm for approximation of attributed relational minimum cost sub{graph isomorphism problem that is able to match a large number of huge graphs in reasonable time. We also give a short overview of point correspondence problem and we implement suitable edge and vertex metrics for matching partial 2D and 3D model geometry and we test proposed algorithm on both real and synthetic data. We restrict our work to weak point correspondences supposing the nal reconstructed 3D model is built-up from faces.
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