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Optimization of tomographic station GE phoenix adjustment for plastic components including metal parts
Starý, Přemysl ; Petrilak, Michal (referee) ; Zikmund, Tomáš (advisor)
X-ray computed tomography is a tool mostly used in a medical diagnosis. A development of the technique and an improvement an in accuracy of tomographic systems enabled an utilization of the tomography in industrial applications. The tomography allows non-destructive analysis of inner structure. There is a negative influence of a reconstructed area if a low-absorption and high-absorption materials are scanned together. This influence makes analysis of the inner structure impossible. There are two options to eliminate these artifacts. We can use algorithms to reduce metal artifacts, or we can try to avoid them when performing the scan. This bachelor thesis focuses on an optimization of tomographic station adjustment for the plastic components including metal parts. The effect of an usage of X-ray filter or collimator and effect of a sample orientation on data quality will be observed. We use tools like contrast, noise and edge sharpness to evaluate data quality.
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The view of Czech students on issues of forced labour
PEŠTOVÁ, Denisa
The aim of this master's thesis is to ascertain knowledge of Czech students in secondary schools, or more precisely in Grammar school, about the issue of forced labour during World War II. The master's thesis is based primarily on literature and own research and is divided into two parts. The first part is the theoretical part where is briefly introduced the history of forced labour in the general level (definition, type of work, working conditions, division of workers, etc.) and the second part where is conduct social research which is oriented only to Czech students. This research is conducted through a questionnaire survey that has the form of mixed research (questions and its evaluation is both quantitative and qualitative). Based on this research is evaluated both the overall state of knowledge of this issue (it compares the first-years students and fourth -years students of secondary schools), and is also taken account of the issue of the topic processing in secondary school textbooks.
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Optimization of tomographic station GE phoenix adjustment for plastic components including metal parts
Starý, Přemysl ; Petrilak, Michal (referee) ; Zikmund, Tomáš (advisor)
X-ray computed tomography is a tool mostly used in a medical diagnosis. A development of the technique and an improvement an in accuracy of tomographic systems enabled an utilization of the tomography in industrial applications. The tomography allows non-destructive analysis of inner structure. There is a negative influence of a reconstructed area if a low-absorption and high-absorption materials are scanned together. This influence makes analysis of the inner structure impossible. There are two options to eliminate these artifacts. We can use algorithms to reduce metal artifacts, or we can try to avoid them when performing the scan. This bachelor thesis focuses on an optimization of tomographic station adjustment for the plastic components including metal parts. The effect of an usage of X-ray filter or collimator and effect of a sample orientation on data quality will be observed. We use tools like contrast, noise and edge sharpness to evaluate data quality.
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Opportunity of sports realization for handicapped people in Prague
SOSNOVÁ, Eva
The thesis in its theoretical part deals with general characteristics and distribution of disability. The goal is to find and map the possibilities of physical activities of persons with disabilities in Prague, especially if there is a sufficient supply of organized sport. A closer look is devoted to sports activities of visually impaired, their classification system and the types of sports that they may operate. The practical part then explores the possibilities for sport for visually impaired people in sports clubs in the City Prague. For better orientation and understanding are assessed graphically different conditions and results of research that visual and counted showing fairly accurate the status in the possibilities of sport activities for visually impaired people.
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