National Repository of Grey Literature 134 records found  previous11 - 20nextend  jump to record: Search took 0.01 seconds. 
Current Trends in Quantitative Analysis of Geographical Data: Potentialities and Limitations of Spatial Data Analysis
Netrdová, Pavlína ; Čermák, Zdeněk (advisor) ; Ježek, Josef (referee) ; Horák, Jiří (referee)
of the Ph.D. Thesis Netrdová, P.: Current trends in quantitative analysis of geographical data: potentialities and limitations of spatial analysis The thesis is a contribution to the discussion about the potentialities of the quantitative approach in geography. It follows the current trends in quantitative analysis of geographical data, specifically spatial analysis, particularly from the perspective of changes in the concept and character of applied methods and their possible contribution in geographical research. Due to the research focus of the author, the entire work is focused primarily on the issue of using quantitative methods in terms of social geography. Attention is focused particularly on statistically spatial analyses, which are the most widely used techniques in social geography, with a wide range of possible applications. One of the goals of this work is to bring the current development in quantitative geography closer to the Czech academic community, and thus contribute to the increased awareness of the potentialities of the application of quantitative methods and spatial analyses in geographical research. Methodological problems in the analysis of spatial data, theoretical changes in the concept of quantitative analysis and also newly emerging quantitative methods have not so far...
Quantification of liver function using breath test with 13C labeled methacetin
Hendrichová, Miluše ; Horák, Jiří (advisor) ; Ehrmann, Jiří (referee) ; Martásek, Pavel (referee) ; Moťovská, Zuzana (referee)
Kvantifikace jaterních funkcí pomocí dechového testu s 13 C-methacetinem MUDr. Miluše HENDRICHOVÁ SUMMARY Efforts to evaluace and quantify liver functions has accompanied hepatology over the last 50 years at least. Quantification of liver function was hindered by multiple blood samploing, the low specificity of monitored parameters and the risk of allergic reactions when using conventional chromoexcretory tests. The introduction of breath tests using the non-radioactive isotope 13C allows non-invasive and highly accurate measurement of liver function. Especially 13C.methacetin is a very suitable substrate for evaluation demethylační and oxidative capacity of hepatocytes. Using the breath test with 13 C-methacetin is noninvasive, easy for patients and the results are reproducible. The aim of this thesis is to introduce the use of breath test with 13 C-methacetin into clinical practice as one of standard items in the care of patients with chronic liver diseases. In the first study we are evaluating liver function using breath test with 13 C-methacetin in patients with liver cirrhosis. The results show that the breath test reliably distinguishes patients with liver cirrhosis from patients without liver damage. Using ROC curves we demonstrate that the most advantageous time of the breath test that best predicts...
Disorders of iron metabolism in skin and chronic liver diseases
Krátká, Karolína ; Horák, Jiří (advisor) ; Ehrmann, Jiří (referee) ; Lata, Jan (referee) ; Martásek, Pavel (referee)
Iron is one of the important biogenic trace elements and its role in the mammalian body is indispensable. In nature there is another element with similar characteristics. Iron is part of a series of compounds that provide key functions such as cellular respiration and oxygen transport to tissues. It is also important for cell proliferation and differentiation, the regulation of gene expression and applies also in the immune system. Given that the effects of iron accumulation in genetic hemochromatosis have been investigated in detail, in recent years, increasing attention and concern about the consequences of iron accumulation also in other diseases. Because the results of previous studies are inconclusive and often mutually contradictory, the aim of this work to analyze and clarify the relationship between HFE gene mutations and iron metabolism in the pathogenesis and progression of some skin and chronic liver disease among genetic hemochromatosis.
Support systems (frames, stands) in modern machine tool design
Horák, Jiří ; Marek, Tomáš (referee) ; Knoflíček, Radek (advisor)
This bachelor’s thesis has a character of recherche, and it is focused on a description of an actual state and construction of supporting systems and frames of machine tools. This thesis deals with the construction of machine centers. It also analysis adverse effects arising from the machining, that the machine frame must withstand to maintain sufficient precision. In the thesis, there are also some basic principles for the construction of support systems. The thesis also includes a recherche describing the most common design arrangements in the creation of machine tools, as well as the author’s observations on the possible development of the problem.
Thin accretion disks with magnetic advective term
Vavřička, Radek ; Bursa, Michal (advisor) ; Horák, Jiří (referee)
Accretion disks around black holes with gas radiating out parts of its gravitational potential energy have long served as objects of both theoretical and observational studies. By solving the structure equations of the disk it is possible to predict the outgoing radia- tive flux and the observed spectrum of the disk and test the validity of the theory against direct observations. The standard thin disk model (Shakura-Sunyaev, Novikov-Thorne) shows, however, a still unexplained non-negligible deviance in the observed spectrum at higher mass accretion rates. To amend to the set of proposed explanations, in this thesis we examine the effect of the magnetic pressure on the trapping of some of the internal energy generated by viscous dissipation processes in the disk and advecting this energy to the black hole. A phenomenological description of heat advection mediated by a highly heterogenous magnetic field will be given, as well as its effect on the spectrum and observed effective temperature. 1
Propagation of waves in polytropic disks
Horák, Jiří
We derive an analytic dispersion relation for waves in three-dimensional polytropic disks. The problem can be separated to two one-dimensional problems of radial and vertical wave propagation. For the vertical problem, we use and generalize first-order perturbation method for waves near the vertical resonance introduced previously by several authors. Based on comparison of the analytical solutions with numerical integration, we find a surprisingly large region of validity of our dispersion relation including both p-mode and g-mode oscillations.
Android Application Design and Monetization Strategy
Doležel, Filip ; Horák, Jiří (referee) ; Luhan, Jan (advisor)
The bachelor's thesis deals with the design of a mobile application for the Android platform. It assesses the implementation tools designed for this development, then contains design of implementation and testing which is an integral part of the application development process. The next section is dedicated to an elaborated analysis of possible ways of monetization of an Android application and selection of a suitable monetization strategy for the developed application. It also includes an example of a typical user of the application according to analysis.
3D printed directional antenna
Dvořák, Václav ; Horák, Jiří (referee) ; Láčík, Jaroslav (advisor)
This master thesis deals with a study of directional antennas, followed by their design and optimization of horn antenna based on SIW for Ka band (26,5- 40 GHz). The first part of the thesis contains the theoretical analysis of the different types of directional antennas, also the SIW technology is described here. It also describes the 3D printing technology by means of which the final antenna should be made. The next part of this work is about design of horn antenna based on SIW. Simulation and optimization of the antenna will be done using the CST Microwave Studio. The horn antenna was modeled with three different dielectric loads. The horn antenna with an experimental triangular dielectric load was chosen for fabrication. The fabricated antenna has reached almost the whole bandwidth to cover Ka. The antenna gain was 9,38 dBi for 33 GHz frequency.

National Repository of Grey Literature : 134 records found   previous11 - 20nextend  jump to record:
See also: similar author names
8 HORÁK, Josef
3 Horak, J.
3 Horák, J.
13 Horák, Jakub
40 Horák, Jan
4 Horák, Jaroslav
8 Horák, Josef
40 Hořák, Jan
2 Hořák, Jaromír
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