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Ray Tracing Using k-D Tree
Musil, Petr ; Jošth, Radovan (referee) ; Havel, Jiří (advisor)
This thesis describes the design and implementation of an application for picture synthesis using ray tracing. The goal is to verify properties of an space subdivision optimalization method using KD tree. The work compares spatial median, objects median and cost model methods for splitting plane determination during KD-tree construction. Several test scenes are used for evaluation.
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Building kD Tree on GPU
Bajza, Jakub ; Kula, Michal (referee) ; Kobrtek, Jozef (advisor)
This term project addresses the construction of kD tree acceleration structures and parallelization of this construction using GPU. At the beginning, there is an introduction of the reader into CUDA platform for parallel programming. There is a decription of generic principles as well as specific features that will be used in this thesis. Following that the reader is put into the issue of acceleration structures for Ray tracing. These structures are described and the kD tree acceleration structure and its variants are portrayed in detail. After that the analysis of chosen kD tree variant is broken down and the problems and issuse of its parallel implementation are adressed. As a part of implementation discription, there is a short descripton of CPU variant and detailed specifications of the CUDA kernels. The testing section brings the results of implementation in form of CPU vs GPU comparison, as well as evaluation of how much the metric set in design was fulfilled. In the end there is a summary of achieved goals and results followed by possible future improvements for the implementation.
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Muhammad Reza Pahlavi. United States of America and the shah's exil (1979 - 1980)
Matoušková, Lenka ; Tumis, Stanislav (advisor) ; Koura, Jan (referee)
My thesis is dedicated to the period of years 1979 - 1980, when the islamique revolution in Iran established complicated relationships among a new Iranian government, shah Mohammad Reza Pahlavi and a government of United States of America with the head president Jimmy Carter. The aim is to map a context between shah's exil and happening in U.S. administrative. The first part deals with the onset of Pahlavi dynasty and its effect on the history of Iran. The second part presents exile years when the Shah had to frequently change his place of residence, and complicated development of opinions among leading members of the government. The third part contains a brief outline of other following happening in United States and the development of the exile government after the Shah's death in 1980.
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Mohammad Reza Pahlavi: A Persian Shan in an exile 1979 - 80
Matoušková, Lenka ; Tumis, Stanislav (advisor) ; Kovář, Martin (referee)
My thesis is dedicated to the life of the Iranian Shah Mohammad Reza Pahlavi between years 1979 - 1980, when helived in exile. The aim is to map this stage of the monarch's life and point out the important connections in the context of international affairs of that time, especially in the United States, as the U.S. administration had considerable influence on events in the Shah's life in those years. The first part deals with the onset of Pahlavi dynasty and its effect on the history of Iran. The second part presents exile years when the Shah had to frequently change his place of residence, mainly due to the complicated international political situation after the Islamic revolution in Iran. The third part contains a brief outline of the development of the exile government after the Shah's death in 1980.
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Building kD Tree on GPU
Bajza, Jakub ; Kula, Michal (referee) ; Kobrtek, Jozef (advisor)
This term project addresses the construction of kD tree acceleration structures and parallelization of this construction using GPU. At the beginning, there is an introduction of the reader into CUDA platform for parallel programming. There is a decription of generic principles as well as specific features that will be used in this thesis. Following that the reader is put into the issue of acceleration structures for Ray tracing. These structures are described and the kD tree acceleration structure and its variants are portrayed in detail. After that the analysis of chosen kD tree variant is broken down and the problems and issuse of its parallel implementation are adressed. As a part of implementation discription, there is a short descripton of CPU variant and detailed specifications of the CUDA kernels. The testing section brings the results of implementation in form of CPU vs GPU comparison, as well as evaluation of how much the metric set in design was fulfilled. In the end there is a summary of achieved goals and results followed by possible future improvements for the implementation.
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Ray Tracing Using k-D Tree
Musil, Petr ; Jošth, Radovan (referee) ; Havel, Jiří (advisor)
This thesis describes the design and implementation of an application for picture synthesis using ray tracing. The goal is to verify properties of an space subdivision optimalization method using KD tree. The work compares spatial median, objects median and cost model methods for splitting plane determination during KD-tree construction. Several test scenes are used for evaluation.
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Vývoj vzájemných vztahů mezi USA a Íránem v kontextu zahraniční a regionální politiky v letech 1969-1977
Zapletalová, Radka
This thesis focuses mainly on the analysis of diplomatic and economic relations between the world's militant leader USA and one of the largest Middle Eastern country, Iran. Their common relations in the early 60s developed by very good way. Thanks to Nixon and Kissinger they agreed several international agreements with well-evolving relationships, but in 1978 they had to break up on the basis of different intelectuall direction about the country's leadership and focus on future militant and economic policy. Unexpectedly acute situation as the Iranian revolution gave strict way "stop" their common relations and Iran is practically separated from the rest of the world.
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Diagnosis and endovascular therapy of cerebral aneurysm
SVAČINA, Igor
Summary Diagnosis and endovascular therapy of cerebral aneurysm The first part of this bachelor work is aimed at the key examination methods such as CT, MR, DSA etc., leading to the determination of diagnosis of subarachnoidal haemorrhage caused by brain aneurysms. It describes both etiology, pathogenesis, incidence of brain aneurysms and also anatomy and physiology of wessel wall and brain wessel supply {--} circle of Willisi. It explicates parametres of adjusting examination modalities for each individual procedure. Next part deals with the endovascular therapy of cerebral aneurysms. It is engaged in the embolization by coils. Detailed information was acquired from special medical literature and also by the observation of routine working procedures in radiology departments and interventional radiology departments in hospitals during scholarships. The target of the bachelors work is also to assess the role of radiographers in the process of determination of subarachnoidal haemorrhage (SAH), which is caused by brain aneurysms, and also during the endovascular therapy of brain aneurysms. The assumption, that radiographers are really necessary and important during examination and that they are useful members of operating team, came true. The further part is focused on the detection and comparison of levels of the patient{\crq}s radiation stress during the endovascular therapy of brain aneurysms. It compares total skiascopy times of these interventions and searches for differences in the amount of applied iodine contrastive solutions. The compared data come from two angio units, Siemens Multistar (2000) and new Siemens Axiom Artis (2006), that are used in the department of interventional radiology in Homolka hospital. The data of 26 patients necessary for calculation of the effective dose were obtained from the operating diaries of both angio units. Effective and organ doses were subsequently calculated by the software programme called Effdose. It was found that effective doses from both angio units are relatively low. The entrance surface doses and organ doses (thyroid, eye lens etc.) cannot cause any skin injuries and any deterministic effects. Radiation stress in Siemens Axiom Artis is almost half lower than in Siemens Multistar. The hypothesis that effective doses in the new angio unit Axiom will be lower proved true. Differences between total skiascopy times and amounts of applied contrastive solutions were slight. The hypothesis that total skiascopy times and amounts of applied iodine contrastive solutions in the new angio unit Axiom will be lower did not prove true.
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