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Assessment of impact of arrangement of collagen fibres in arterial wall on its response in tension tests
Kratochvíl, Filip ; Chamrad, Jakub (referee) ; Burša, Jiří (advisor)
This thesis deals with organisation of collagen fibres in human blood vessel walls and with simulation models, which are used to calculate vessel behaviour. Firstly, the thesis focuses on the anatomy of human blood vessel system, mainly on the vessel structure and properties of some vessel components. Next, two models are presented, which can be used for the vessel wall in calculations, specifically models with straight and wavy collagen fibres. Moreover, some methods are described, which can be used to gain information about a vessel. Subsequently, relationships are derived needed for simulation of tension tests of these models, mainly to express the length of collagen fibres. In the practical part simulations of vessel behaviour during uniaxial tension test are carried out and histograms of local direction angles of collagen fibres in the unloaded state are created. In the end, results gained by simulations are compared with real available data.
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Calculation of the dynamic behavior of the rotor using the method of transfer matrices
Kratochvíl, Filip ; Hrstka, Miroslav (referee) ; Lošák, Petr (advisor)
The master‘s thesis deals with the modelling of a rotor using the transfer matrix method and the displacement method. Specifically, it addresses the response to static loading, the first natural bending oscillation shape and the response to imbalance. The focus of the review is on the transfer matrix method and its practical applications in various parts of dynamics. The method of rotor modelling and the various elements used for this purpose are also described. The first practical part focuses on the static response of the rotor to self-weight and external loads. This is solved based on the transfer matrix method. The next part deals with finding the rotor's natural speed based on the transfer matrix method and the displacement method. For this purpose, two different approaches have been used depending on the method. For the transfer matrix method, the interval halving approach was chosen and for the displacement method, the eigenvalue problem was solved. The last practical part is the solution of the response to imbalance. This was done based on the displacement method. At the end of the thesis, a control example is performed where the derived solution is compared with the solution using the finite element method.
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Risk factors of atherosclerosis
Kratochvíl, Filip ; Ošťádal, Petr (advisor)
The topic of my thesis I chose based on their interest in this issues. Atherosclerosis is a multifactorial disease occurring in the vessel wall due to the interaction of metabolic and structural properties of the vessel wall , the blood components and hemodynamic forces. It's a long ongoing inflammatory process, which affects the inner wall of the damaged artery chemical, physical or biochemical effects and leads to structural changes in the vascular wall Consequently fibroproliferative inflammation. The term arteriosclerosis was first used in 1829 to describe calcifications in the wall of the artery . The term atherosclerosis was then used in 1904 to describe lipid deposits in atherosclerotic arteries. The discovery of the relationship between clinical symptoms of myocardial infarction , atherosclerosis and coronary artery thrombosis made in 1912 by James Herrick . Atherosclerosis is the process involved in pathophysiological mechanisms of organ changes , which are manifested serious complications , such as coronary heart disease, peripheral vascular disease or ischemic cerebrovascular event . Taking a number of risk factors may condition the not only atherosclerosis , but also its rapid progress and spread to other areas.
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Development of music instrument teachers' social skills by Video home training method
Kratochvíl, Filip ; Šírová, Eva (advisor) ; Urban, Kamila (referee)
This master thesis deals with socials skills of instrumental music teachers and their development through the VTI method. The theoretical part of the thesis sums up a knowledge of music education psychology, social skills and it outlines VTI method. The empirical chapter of the thesis uses a questionnaire focused on music teachers' attitude to social skills and their development. At the same time it analyses by means of a case-study an appropriate form of VTI intervention in the field of music education. The results of the questionnare research show that teachers perceive social skills as important ones. As well they show that teachers are used to developing their skills by consulting their colleagues, practicing their musical instruments or participating in professional workshops and master classes. The case study shows a possible form of the VTI method intervention. Keywords: social skills, video interaction guidance, music teacher
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Assessment of impact of arrangement of collagen fibres in arterial wall on its response in tension tests
Kratochvíl, Filip ; Chamrad, Jakub (referee) ; Burša, Jiří (advisor)
This thesis deals with organisation of collagen fibres in human blood vessel walls and with simulation models, which are used to calculate vessel behaviour. Firstly, the thesis focuses on the anatomy of human blood vessel system, mainly on the vessel structure and properties of some vessel components. Next, two models are presented, which can be used for the vessel wall in calculations, specifically models with straight and wavy collagen fibres. Moreover, some methods are described, which can be used to gain information about a vessel. Subsequently, relationships are derived needed for simulation of tension tests of these models, mainly to express the length of collagen fibres. In the practical part simulations of vessel behaviour during uniaxial tension test are carried out and histograms of local direction angles of collagen fibres in the unloaded state are created. In the end, results gained by simulations are compared with real available data.
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Factors which influence children's and adolescent's motivation for playing musical instrument
Kratochvíl, Filip ; Šírová, Eva (advisor) ; Šnoblová, Vladěna (referee)
The topics of this bachelor thesis are factors which influence children and adolescents' motivation for playing a musical instrument. These factors follows general theories of motivation. It seems that individual factors create a dynamic system of factors which influence motivation for playing a musical instrument, which often also influences these factors at the same time. The proposed research aims at comparing motivation for playing a musical instrument of pupils to an educational style of music teacher. At the same time extent of motivation of pupils of public elementary musical schools and students of conservatories will be compared. Our own Questionaire of motivation for playing a musical instrument and a modified questionaire "Pupil about teacher of music" will be used for a purpose of our research.
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Risk factors of atherosclerosis
Kratochvíl, Filip ; Ošťádal, Petr (advisor)
The topic of my thesis I chose based on their interest in this issues. Atherosclerosis is a multifactorial disease occurring in the vessel wall due to the interaction of metabolic and structural properties of the vessel wall , the blood components and hemodynamic forces. It's a long ongoing inflammatory process, which affects the inner wall of the damaged artery chemical, physical or biochemical effects and leads to structural changes in the vascular wall Consequently fibroproliferative inflammation. The term arteriosclerosis was first used in 1829 to describe calcifications in the wall of the artery . The term atherosclerosis was then used in 1904 to describe lipid deposits in atherosclerotic arteries. The discovery of the relationship between clinical symptoms of myocardial infarction , atherosclerosis and coronary artery thrombosis made in 1912 by James Herrick . Atherosclerosis is the process involved in pathophysiological mechanisms of organ changes , which are manifested serious complications , such as coronary heart disease, peripheral vascular disease or ischemic cerebrovascular event . Taking a number of risk factors may condition the not only atherosclerosis , but also its rapid progress and spread to other areas.
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