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Generace vířivosti rychlostního pole gradientem entropie
Novák, Martin ; Maršík, František (advisor) ; Grmela, Miroslav (referee)
The master thesis studies the impact of the entropy gradient on the vorticity of ve- locity field, particularly by applying the linear momentum balances. These balances are formulated for Thermo-viscous fluids (later fluids) and Thermo-viscous-elastic ma- terial (later solids) with the other balances (energy, mass, etc.). In order to derive these balances, the Classical continuum mechanics approach is used along with the respec- tive Variational principles. The thesis emphasizes the Variational principles applica- tion representing the modification of the Bateman principle [Bat29] and its comparison with the Classical approach, linked to the L. Crocco work [Cro37], particularly in the case of vorticity generation. It is pointed that by the definition of the dissipative en- tropy sdis a harmony of both approaches can be achieved and that, in the case of an appropriate limit, the direct effect of the entropy gradient on the vorticity of velocity field can be demonstrated. By applying this conclusion the relationship between the change of circulation among a closed curve and released heat on the given geometry is indicated.
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Subspace Modeling of Prosodic Features for Speaker Verification
Kockmann, Marcel ; Kenny, Patrick (referee) ; Nöth, Elmar (referee) ; Černocký, Jan (advisor)
Předložená disertační práce se zabývá ověřováním mluvčího pomocí prozodických příznaků zahrnujících hodnoty základního tónu, energie a délek řečových úseků. Studovali jsme dvě rozdílné techniky pro parametrizaci: první vede k dobře definované sadě menšího počtu příznaků, druhá k vysoko-dimenzionální sadě heterogenních prozodických příznaků. První část práce se věnuje vývoji příznaků reprezentujících prozodické kontury, zde jsme vyvinuli a ověřili několik modelovacích technik, s důrazem na modelování v reprezentativních podprostorech. Druhá část práce se zaměřuje na nové pod-prostorové modelovací techniky pro heterogenní prozodické parametry s velkou dimenzionalitou. Model je teoreticky odvozen a experimentálně ověřen na oficiálních datech z NIST evaluací ověřování mluvčího (NIST Speaker Recognition Evaluation). Ve srovnání s ostatními současnými prozodickými jsme dosáhli podstatně lepších výsledků. Na konci práce presentujeme také novou techniku pro elegantní kombinaci dvou prozodických systémů. Tato technika může být použita rovněž pro fúzi prozodického systému se standardním přesným cepstrálním systémem, což vede k dalšímu podstatnému zvýšení úspěšnosti verifikace.
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Stability and convergence of numerical computations
Sehnalová, Pavla ; Dalík, Josef (referee) ; Horová, Ivana (referee) ; Kunovský, Jiří (advisor)
Tato disertační práce se zabývá analýzou stability a konvergence klasických numerických metod pro řešení obyčejných diferenciálních rovnic. Jsou představeny klasické jednokrokové metody, jako je Eulerova metoda, Runge-Kuttovy metody a nepříliš známá, ale rychlá a přesná metoda Taylorovy řady. V práci uvažujeme zobecnění jednokrokových metod do vícekrokových metod, jako jsou Adamsovy metody, a jejich implementaci ve dvojicích prediktor-korektor. Dále uvádíme generalizaci do vícekrokových metod vyšších derivací, jako jsou např. Obreshkovovy metody. Dvojice prediktor-korektor jsou často implementovány v kombinacích modů, v práci uvažujeme tzv. módy PEC a PECE. Hlavním cílem a přínosem této práce je nová metoda čtvrtého řádu, která se skládá z dvoukrokového prediktoru a jednokrokového korektoru, jejichž formule využívají druhých derivací. V práci je diskutována Nordsieckova reprezentace, algoritmus pro výběr proměnlivého integračního kroku nebo odhad lokálních a globálních chyb. Navržený přístup je vhodně upraven pro použití proměnlivého integračního kroku s přístupe vyšších derivací. Uvádíme srovnání s klasickými metodami a provedené experimenty pro lineární a nelineární problémy.
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Measuring the Performance of Human Capital in the Building Company
BURIÁNKOVÁ, Irena
The main objective of this work is to measure the performance of human capital in the chosen building company. Another goal is to bring suggestions for improvement that will lead to increasing to the efficiency of human capital. The thesis consists of two parts. The theoretical part provides information from the Czech and foreign literature. Knowledge of theoretical part is then applied to the practical part. Basic information about the company is included in the practical part and comparison with competing businesses is also mentioned. But the most attention is paid to the performance of human capital, which is measured by labour productivity. Two indicators are selected for the calculation of labour productivity - sales and added value. Both indicators are compared in two ways; the first is average number of employees and the second personnel costs. Calculations are performed by internal resource of the company for the period 2007-2014.
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Informovanost pedagogů středních škol o problematice poruch příjmu potravy
Kežlínková, Lenka
This bachelor thesis deals with the level of high school teachers' awareness of eating disorders. The theoretical part describes two eating disorders, mental anorexia and mental bulimia. It also describes their symptoms, causation, treatment and prevention. The methods used in the theoretical part, after studying the specialized literature, are analysis, synthesis and comparison. The main target of the practical part is to check the teachers'ability to recognize the eating disorders, to find out if they have had to solve these problems, if they are informed enough about this matter and if they inform their students properly too. In order to achieve this target, high school teacherswere surveyed. The results of the survey have been analyzed and put into tables and graphs. Key words Eating disorders, mental anorexia, mental bulimia, prevention, awareness of teachers.
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The effect of pyrethroid based pesticides on fish
RICHTEROVÁ, Zuzana
Pyrethroids are ones of the most used pesticides worldwides. The widespread use and high stability of pyrethroids lead to the assumption of that their occurrence in the environment could be quite frequent. They can reach water ecosystem as pollutants. Residues of pyrethroids are not only detected in the water column, but also in sediments and in fish tissues. The first study was devoted to the product Nexide containing 60 g.l-1 of active substance gamma-cyhalothrin. Tested Nexide concentrations were 5, 25, 50, 100, and 250 µg.l-1. Early life stage test was used.Common carp (Cyprinus carpio) was tested. There were significant mortalities in all concentrations except the lowest concentration during the trial. The lowest concentration tested 5 µg.l-1 only caused a slightly increased mortality. This lowest concentration influenced the growth in length and weight negatively, decelerated ontogenetic development, and made the body surface of the individuals darker. Histopathology of individuals from this concentration revealed dystrophy in liver. Examination of kidney, intestine and gills did not show significant histopathological differences compared with control. The evaluation of selected parameters of oxidative stress demonstrated a significantly higher activity of detoxification enzyme glutathione-S.transferase (GST) and a significantly lower activity of defensive enzyme glutathione peroxidase (GPx) compared with the control group. The other examined parameters of oxidative stress such as catalase (CAT), glutation reductase (GR), and lipid peroxidation determined by using the thiobarbituric acid-reactive substances (TBARs) were comparable to the control group. Changes in oxidative stress parameters suggest that exposure of the organism to the product Nexide in the given concentration leads to dysbalance of defensive enzymes. The second study was devoted to the product Cyperkill 25 EC containing 250 g.l-1. Tested Cyperkill 25 EC concentrations were 7.2, 36, 72, 144, and 360 µg.l-1. The procedure of the trial was the same as the preceded one. There were 100% mortalities in all concentrations except the lowest concentration during the trial. The lowest tested concentration 7.2 µg.l-1 allowed 90% of individuals to stay alive till the end of experiment. The lowest concentration influenced the growth in length and weight negatively and decelerated ontogenetic development compared with the control. Any individual exposed to this concentration did not reach juvenile stage until the end of the trial. Dark pigmentation was visible in 68% of these exposed individuals on the last day. Similar darkening was visible in individuals from higher concentrations shortly before death too. Histological examination did not revealed significant changes in intestine, liver, kidney, and gills compared with the control group. Evaluation of selected parameters of oxidative stress demonstrated significantly lower activities of GST, GR, and GPx. Activities of CAT and TBARS were comparable with the control group. Changes in oxidative stress parameters suggest that exposure of the organism to the product Cyperkill 25 EC in the given concentration could induce oxidative stress and interfere with the activities of antioxidant enzymes. The presented thesis summarises actual data about pyrethroids and their influence on fish. The demonstrated effects confirm high susceptibility of early developmental stages of fish to tested pesticides. When interpreting the results, we have to take into account the fact that studies showed this risk even on single pyrethroid substances. But water organisms are exposed to many other more or less toxic products and substances in a real environment. These xenobiotics could react with each other and their mixture could even potentiate negative effects. The performed studies also clearly show the significant differences in the sensitivity of embryonic and embryolarval tests.
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Support of regional development through the Local Action Group Podchlumí
Jezberová, Zuzana ; Hejnák, Václav (advisor) ; Marcela, Marcela (referee)
The Diploma thesis deals with issues of the support of regional development through the Local Action Group Podchlumí, r.a. (LAG Podchlumí).
The goal of this thesis was to explore the contribution of the LAG Podchlumí to quality of life of residents and business development. Assessment of the influence of LAG on regional development has been based on the existence and implementation of the Program of rural development program of the Czech Republic Axis IV. LEADER, which leads to an improvement of management and to mobilization of the natural inner potential of countryside. The Program of rural development represented the main financial source for fruition of LAG projects in the previous programming period.
In this thesis, activities of the LAG Podchlumí and local subjects for support and development of partnership of residents and for public, business, and non-profit communities have been analysed. Implementation of own projects, through which the versatile development of the region, life improvement of residents, increase the attractiveness of the region has been evaluated. In order to get an independent and objective evaluation, an anonymous questionnaire has been conducted among residents of the region Podchlumí. Further, personal observation of the region Podchlumí, a study of professional literature as well as of internal materials of the LAG has been done. The hypothesis that the Local Action Group Podchlumí plays an important role in development of partnership of public administration of municipalities, agricultural subjects, independent agricultural as well as non-agricultural enterpreneurs, and non-profit organizations has been verified on the basis of analysis of realized activities. Support from the Program of countryside development to the region Podchlumí, Measure IV.1.2 Realization of local development strategy, contributed to achieving improvements in quality of life of residents. The greatest support was given to appearance of communities and quality of infrastructure, development of public facilities and services. Financial resources were spent also on modernization and development of agricultural as well as non-agricultural business. In comparison with other LAGs in the district Jičín, the LAG Podchlumí supported the greatest number of projects through the measure IV.1.2 of the Rural development program on realization of local developing strategy. It has been found by means of evaluation of the anonymous questionaire among residents of the region that residents perceive improvement of appearance and life of communities but they are not aware of the fact that many projects have been implemented with the contribution of activities of the LAG Podchlumí. For this reason, the LAG Podchlumí should focus more on propagation of its own activities. Residents of the region are interested in surrounding of their villages.
It is possible to made conclusion that the results of analysis of activities of the LAG authenticated and confirmed correctness of the hypothesis that the Local Action Group Podchlumí plays an important role in development of partnership of public administration of municipalities, agricultural subjects, independent agricultural as well as non-agricultural enterpreneurs, and non-profit organizations.
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Resolving of insolvency of business corporations trough bankruptcy
Marková, Martina ; Civínová, Denisa (advisor) ; Klára, Klára (referee)
The presented thesis tries to introduce the reader to the course of the insolvency proceedings, especially in bankruptcy proceedings. The theoretical part mainly discussed about the meaning and history of this institute, further aspects necessary for the commencement of insolvency proceedings and then there is described in more concise form the additional course up to the decision on the debtors bankruptcy. Subsequently, the author deals with the consequent procedure in cases where the debtors bankruptcy is solved by bankruptcy. Describes the course, focusing primarily on the sale of the debtors property and its subsequent allocation among the creditors until its conclusion, which is the submission of the final report by the insolvency administrator of the court, its subsequent approval and distribution schedule. In the practical part of the thesis the theoretical knowledge mentioned above is applied to the selected insolvency case of business corporation. In this part there are also pointed some potential problems and complexities that arose in this case. There is also described and analyzed the entire insolvency proceedings from filing an insolvency petition to the preparation of the final report by the insolvency administrator, that is the stage where the proceedings took place on the date of submission of this work. Furthermore, the author discusses the development and the number of insolvency proceedings in our country since 2008 when the new legislation of this institute came into force. On the same principle, the author also deals with the analysis of the most common types of obligations of business corporations.
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A comparison of unemployment in various social groups
Urbanová, Věra ; Majerová, Věra (advisor) ; Petra, Petra (referee)
This diploma thesis has both a theoretical and a research section. In the theoretical part basic concepts related to the topic are defined and the unemployment of social groups vulnerable in the labour market that require increased attention in their inclusion are analysed. The empiric section comprises of research focusing on candidates of these social groups applying for a job. Furthermore, the research of the labour office's employees at the departments of the labour office (KoP ÚP ČR) is included. The acquired data is then evaluated and a conclusion formed as to how the current situation can be improved.
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Analysis of labour market in selected region
Kleinová, Hedvika ; Svatošová, Libuše (advisor) ; Petr, Petr (referee)
The thesis analyses the situation of the labour market in Ústí nad Labem region. The attention is primarely aimed to the developmental trends in the emloyment and unemployment and to the analysis of expenditures on the state politics of employment in the region during the period from 2000 to 2014. The basic elementary characteristics are used for findings of the basic trends in the development of indicators.The part of the work is the interregional comparsion of the main labour market indicators, inclusive of the average values in the whole Czech Republic. The great emphasis is placed on the determination of the problem area of the labour market in Ústí nad Labem region and the suggestion of the solution leading to the amelioration of the current situation.
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