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Construction of workout machines, their mechanisms and use in practice
SVINTEK, Lukáš
In the introduction of the diploma thesis, a current view of the issue of strengthening and strength machines is given. In the theoretical part, a general overview of the solved problem is made from available information sources. In the practical part, machines are divided according to various criteria with a focus on the most used machines. Then the work focuses on the construction of selected types of strength machines, safety features and sources of load forces. The next part consists of research in the form of a questionnaire intended for fitness centers. Based on the answers, a proposal to improve the problematic parts. This is followed by testing of the proposed design variants on a test device. The conclusion of the work is a summary of the facts found and their interpretation.
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Analysis of energy and performance parameters of tractor sets for tillage
Masnica, Daniel ; Porteš, Petr (referee) ; Bauer, František (advisor)
This diploma thesis analyzes the influences of individual components and settings on the performance and energy parameters of tractor sets. The theoretical part of the thesis focuses on tractor construction and describes some electronic systems used in modern tractors. It also describes the methodology of field measurements, measuring techniques, and machinery used for the measurements. The practical part of the thesis deals with field measurements of a tractor set with a combined cultivator, a plow, and traction tests of the tractor. From the measured data, various performance and energy parameters are calculated. The results are analyzed, and a discussion is provided.
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The beginnings of textile production in the Czech Republic. Selected questions of textile production practised on the territory of the Czech Republic at the end of the Stone Age.
Korteová, Judita ; Dobeš, Miroslav (advisor) ; Březinová, Helena (referee)
This work assesses the evolution of textile production in the Czech lands during the Eneolithic, a period that is the earliest source of broader archaeological information for the study of textile manufacturing. The basis for the study is provided above all by archaeological finds of textile tools (spindle whorls, weights, spools and awls) that are evaluated within individual archaeological cultures in terms of quantity, shape, size and function, archaeological context and chronological development. This is supplemented by a survey of fragmentary textiles and their imprints dating from the Stone Age in the Czech Republic. Another important source of information is provided by findings from research into Eneolithic pile-dwelling settlements around Alpine lakes that have provided numerous finds of archaeological textiles as well as textile-making tools and tool fragments that have not been found in the Czech lands. An interesting comparative set of artefacts is provided by the objects found in the possession of the mummy of Ötzi dating from the Middle Eneolithic Period. The second part of the work focuses on the experimental testing of several hypotheses formulated on the basis of the study of archaeological materials. The experiments focused on the potential of working bast fibre from trees as an...
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