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Thrombi detection in main brain arteries in CT image data
Líška, Martin ; Nemček, Jakub (referee) ; Chmelík, Jiří (advisor)
The master’s thesis deals with automatic preprocessing, segmentation and consecutive analysis of volume data of anonymized patient CTA acquisitions with an indication of stroke. Preprocessing of volume data is an essential step for proper vascular tree segmentation and analysis. The region growing method was used to segment the vascular tree of the brain. After extracting the vascular tree, the labeling of individual branches was applied in the algorithm and the appropriate features were extracted. The analysis examined the features of vessel lengths, their diameter and local brightness profiles, which are important indicators of possible stenosis or occlusion of the main vessels of the brain. The output of the algorithm are various modalities of diagnostic, assisted visualizations of the segmented vascular tree. The segmentation and analysis algorithm of cerebrovascular system was created in the MATLAB programming environment.
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Experimental stand for rotational heat pipe verification
Liška, Martin ; Sikora, Michal (referee) ; Vlach, Radek (advisor)
This bachelor thesis presents a design of an experimental stand for testing of cooling effects on electrical machines trough rotational heat pipe and mainly with design and construction of experimental stand, that represents rotational heat pipe of real machine rotor. Pipe is heated by means of resistance conductor winding and average temperature on a pipe surface is scanned with a additional parallel winding. Experimental stand was designed for subsequent experiments and for evaluating of rotational heat pipe parameters.
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Intergration of a charging station into a family house photovoltaic system
Liška, Martin ; Langerová, Petra (referee) ; Šedrlová, Magdalena (advisor)
This bachelor’s thesis deals with integrating a charging station into a family house photovoltaic system. The thesis is divided into two parts, the theoretical and the practical. The purpose of the theoretical part was to conduct research about current possibilities concerning charging stations and their integration into the household. In the practical part, there were created function designs to integrate the charging station into the intelligent household and there was realised the testing of the selected charging station.
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Estimation of bone mineral density of cancellous vertebral bone in multi-energy CT data
Líška, Martin ; Jakubíček, Roman (referee) ; Chmelík, Jiří (advisor)
The principle of the BMD estimation method presented in this thesis consists in the tomographic scanning of the axial skeleton by a CT system with two different energies. The BMD estimation method was applied to acquisitions scanned by CT system IQon Spectral CT (Philips) on seven patients, two men and five women, in the lumbo-sacral region. For the functionality of the method, it is necessary to know the standardized amounts of selected elemental components contained in a given tissue, specifically in the cancellous bone of the vertebra. In the first part, the thesis deals with the theoretical part of solving the estimation of BMD from dual-energy CT data, two equations with several unknowns and their modification. The practical part deals with the program solution of the method of calculating the estimation of bone minerals in dual-energy CT data. The outputs of the presented BMD estimation method were processed and statistically compared with the other two phantom-less BMD estimation methods. The functionality of the method and statistical processing were solved in MATLAB and STATISTICA softwares.
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Potravní chování skorce vodního (Cinclus cinclus) na tocích okresu Tachov
LIŠKA, Martin
In the first part of the thesis, characteristics (physical, environmntal, quantity and quality of prey) of favourable food patches and reference plots inside the Dipper´s territories were examined. In the second part, correlations of prey (quantity and quality) characteristics and physical-environmental characteristics were examined. In the third part, correlations between single types of observed Dipper behaviour were examined. In the fourth part, correlations between characteristics (physical, environmntal, quantity and quality of prey) of food patches and observed time of the Dipper´s foraging behaviour were examined. In the fifth part of the thesis, correlations between the territory characteristics (physical, environmntal, quantity and quality of prey) and body measurements of single birds were examined.
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Intergration of a charging station into a family house photovoltaic system
Liška, Martin ; Langerová, Petra (referee) ; Šedrlová, Magdalena (advisor)
This bachelor’s thesis deals with integrating a charging station into a family house photovoltaic system. The thesis is divided into two parts, the theoretical and the practical. The purpose of the theoretical part was to conduct research about current possibilities concerning charging stations and their integration into the household. In the practical part, there were created function designs to integrate the charging station into the intelligent household and there was realised the testing of the selected charging station.
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Thrombi detection in main brain arteries in CT image data
Líška, Martin ; Nemček, Jakub (referee) ; Chmelík, Jiří (advisor)
The master’s thesis deals with automatic preprocessing, segmentation and consecutive analysis of volume data of anonymized patient CTA acquisitions with an indication of stroke. Preprocessing of volume data is an essential step for proper vascular tree segmentation and analysis. The region growing method was used to segment the vascular tree of the brain. After extracting the vascular tree, the labeling of individual branches was applied in the algorithm and the appropriate features were extracted. The analysis examined the features of vessel lengths, their diameter and local brightness profiles, which are important indicators of possible stenosis or occlusion of the main vessels of the brain. The output of the algorithm are various modalities of diagnostic, assisted visualizations of the segmented vascular tree. The segmentation and analysis algorithm of cerebrovascular system was created in the MATLAB programming environment.
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Swedish foreign policy during early years of Charles XI's reign
Liška, Martin ; Stellner, František (advisor) ; Valkoun, Jaroslav (referee)
- The thesis is focused on Swedish foreign policy during the period 1660 - 1675, the early years of Charles XI's reign. Although Sweden is considered as an empire practically all over the 17th century, from the economic point of view it was a weak country. Sweden was totally depending on financial help from its allies, especially during periods of peace, as it was the case between 1660 and 1675. This fact belongs to the main aspects influencing the Swedish foreign policy at this time. Main part of the thesis is dedicated to relations between Sweden and other European states. The most significant were the relations with France and Denmark, since France was the ally which provided Sweden the needed finance. The role of Denmark was also essential because of its geographical position as neighbouring country to Sweden. The thesis indeed discusses relations to some other states that played an important role as well - England, the Netherlands, Brandenburg, other German states, Poland and Russia. The aim of the thesis is not just to analyse the Swedish foreign policy, but even to answer questions if there was any alternative or if the way this policy was conducted was the only possible one and also, if such policy can be considered as success or failure. These questions are answered at the final part of...
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Optimizing large applications
Liška, Martin ; Hubička, Jan (advisor) ; Mareš, Martin (referee)
Both uppermost open source compilers, GCC and LLVM, are mature enough to link-time optimize large applications. In case of large applications, we must take into account, except standard speed efficiency and memory consumption, different aspects. We focus on size of the code, cold start-up time, etc. Developers of applications often come up with ad-hoc solutions such as Elfhack utility, start-up of an application via a pre-loading utility and dlopen; prelinking and variety of different tools that reorder functions to fit the order of execution. The goal of the thesis is to analyse all existing techniques of optimization, evaluate their efficiency and design new solutions based on the link-time optimization platform. Powered by TCPDF (www.tcpdf.org)
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Epidemiology of hypersensitivity in patients with atopic dermatitis and its clinical relevance
Liška, Martin ; Panzner, Petr (advisor) ; Pizinger, Karel (referee) ; Petrů, Vít (referee)
Epidemiology of hypersensitivity in patiens with atopic dermatitis and its clinical relevance MUDr. Martin Liška Background: Atopic dermatitis (AD) is a chronic inflammatory skin disease which is often accompanied by hypersensitivity to various allergens. While food allergens have been considered to play a major role in AD pathogenesis, there is also increasing evidence that aeroallergens are involved. The clinical relevance of detected hypersensitivity was also intensively investigated in last decades. Aims of the study: Our aim was to find out the frequency of hypersensitivity to airborne allergens in AD patients and its clinical relevance using various evaluation standards. Methods: We tested 71 patients (median age 5 years) with AD for hypersensitivity to grass and birch pollen, Dermatophagoides pteronyssinus and Dermatophagoides farinae using atopy patch test (APT), skin prick test (SPT) and specific IgE measurement. The sensitivity (SE) and specificity (SP) of the tests were calculated on the basis of personal history of AD exacerbation, SCORAD changes and the number of days with need for topical anti- inflammatory treatment (AITD) in relation to exposure to the allergens being tested. Results: APT was positive in 45 patients, mostly to Der.farinae (n = 37). SPT and/or specific IgE were positive in 42...
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