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Evaluation of wheelchair adjustments and their impact on proper propulsion pattern upper extremities and sitting posture in patients with spinal cord lesions
Dáňová, Petra ; Pfeiffer, Jan (advisor) ; Neuwirthová, Svatava (referee)
Title: Evaluation of wheelchair adjustments and their impact on proper propulsion pattern upper extremities and sitting posture in patients with spinal cord lesions. Objectives: The objective of this work was to evaluate the adjustments of wheelchair and to determine their impact on the work of the upper limbs and posture while sitting. This work was done on a group of patients with spinal lesions with their own wheelchairs. Another objective was to assess how education of proper propulsion pattern and form and type of a grip of handrim affects the correct propulsion pattern. Methods: In the group of 26 patients with spinal cord injuries in different levels of the spinal cord, I tested the adjusments of wheelchair, in particular the centre of gravity and maximum seat height from the ground. I also investigated what education on correct propulsion pattern the patients received, and observed any home-made adjustments to handrim, as well as patients' techniques of handrim grip. Finally, I examined how the subjects drove his/her wheelchair. During all the tests, I recorded video and photo documentation. The results were statistically evaluated using the Fisher test. Results: Despite the fact that only a small group was investigated, I showed the effect of wheelchair seatings on the correct posture. I...
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Historical development of rocket engines
Šima, Dávid ; Dubnický, Lukáš (referee) ; Petrásek, Miloslav (advisor)
This bachelor´s thesis is dealing with the historic development of rocket engines and their use on rocket carriers. The work is divided into eight parts. The first part describes the principle of operation of reactive motion and derivation of the Ciolkovskij equation. The second part describes historical development from ancient China to the period before World War II. The fourth part describes the Second World War and especially the missile development in Germany during the war. The fifth part describes mainly rocket engines use in space research of the USA, Russia, Japan, the European Space Agency, India and China. The sixth part describes rocket engines of private companies which were founded in the early 21. century. The seventh part describes aerospike rocket engines and the last part describes physical engines.
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Reusable launcher flight mission
Metelka, Dominik ; Daněk, Vladimír (referee) ; Zikmund, Pavel (advisor)
Tato práce je rozdělena do dvou hlavních částí, které jsou také hlavní cíle. Cílem první části je popis mise vícenásobně použitelného prvního stupně nosné rakety. V této části je nejdříve přiblíženo téma znovupoužitelných kosmických systémů a jejich vývoj do současné doby. Hlavně jsou však v této části popsány operačně používané vícenásobně použitelné nosné rakety, kde u každé z nich je poté popsána jejich letecká mise. Dále jsou zmíněny některé důležité nosné rakety ve vývoji a také jaké jsou způsoby návratu prvního stupně. Druhá část je praktická a cílem je návrh mise návratu prvního stupně nosné rakety na zemi. Pro výpočty byly zvoleny parametry podle současné rakety Falcon 9, ze kterých byla analyticky vypočtena finální rychlost a výška, ve které se první stupeň oddělí od zbytku rakety. Pro návrat a celkový let byl pomocí programu MATLAB napsán skript, který vypočítal a vykreslil potřebné parametry a charakteristiky. Díky tomu bylo také zjištěno, v jaké výšce bude potřeba znovu zažehnout motory, aby první stupeň bezpečně přistál na zemi.
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Defect detector using CIS sensor
Komzák, Daniel ; Richter, Miloslav (referee) ; Honec, Peter (advisor)
The diploma thesis deals with the research of CIS sensors, their parameters and market research. It contains a comparison between sensors and line cameras, which are used for similar purposes, therefore in this case for scanning the packaging material. The diploma thesis contains the described construction of the device, including the assembly of components and the design of boards. The work describes in detail the image processing from the CIS sensor and various image preprocessing. There is also described method of defect detection, including their distribution and individual approach to each type of defect. The thesis contains a description of the GUI, including its functions and connection to the application dealing with image processing.
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Consequences due to Inappropriate Movement Stereotype on a Wheelchair Described by an Occupational Therapist. Subtitle: Used Propulsive Mechanics in Paraplegics
Jarošová, Zuzana ; Hradilová, Iva (advisor) ; Rodová, Zuzana (referee)
This bachelor thesis is focused on consequences of an inappropriate movement stereotype while driving on a mechanical wheelchair. The examined population of clients suffered from paraplegia. The analysis of propulsion mechanics is the main goal of the bachelor thesis. The theoretical part of the thesis is focused on causes involved in the inappropriate propulsion pattern. The main investigated causes can be consequences of spinal lesion and inappropriate choice or setting of the mechanical wheelchair components. In case of the spinal lesion, we are focused on the height of the lesion with regard to the posture and propulsion. When speaking about the setting the wheelchair components, we are mainly interested in the appropriate components selection and components adjustment, especially the seat and backrests, which most affect the seat on the wheelchair. Tests, that can be used to examine the presence of painful states of client, are included in the thesis. The thesis also contains the possibilities of intervention from the occupational therapist's point of view. The theoretical knowledge of propulsion mechanics is used in the practical part, where the analysis of propulsion patterns (with use of video records) as well as the tests of painful states were performed. The conclusion of the thesis...
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Vertical worm conveyor
Sordyl, Martin ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
The aim of this thesis is realization of functional calculation, design creation of vertical worm conveyor according to required parameters and consideration of transported materials. Here is realized calculation of main parts of the conveyor, approximate transport performance, design of propulsion, gear, conjuction and regulatory unit, emplacement of worm and strength control of functional parts of the machine. This thesis is composed of technical report and drawings.
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Evaluation of wheelchair adjustments and their impact on proper propulsion pattern upper extremities and sitting posture in patients with spinal cord lesions
Dáňová, Petra ; Pfeiffer, Jan (advisor) ; Neuwirthová, Svatava (referee)
Title: Evaluation of wheelchair adjustments and their impact on proper propulsion pattern upper extremities and sitting posture in patients with spinal cord lesions. Objectives: The objective of this work was to evaluate the adjustments of wheelchair and to determine their impact on the work of the upper limbs and posture while sitting. This work was done on a group of patients with spinal lesions with their own wheelchairs. Another objective was to assess how education of proper propulsion pattern and form and type of a grip of handrim affects the correct propulsion pattern. Methods: In the group of 26 patients with spinal cord injuries in different levels of the spinal cord, I tested the adjusments of wheelchair, in particular the centre of gravity and maximum seat height from the ground. I also investigated what education on correct propulsion pattern the patients received, and observed any home-made adjustments to handrim, as well as patients' techniques of handrim grip. Finally, I examined how the subjects drove his/her wheelchair. During all the tests, I recorded video and photo documentation. The results were statistically evaluated using the Fisher test. Results: Despite the fact that only a small group was investigated, I showed the effect of wheelchair seatings on the correct posture. I...
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