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Application of modern technologies for design and production of a ski helmet prototype
Vilímovský, Daniel ; Pokorný, Zdeněk (referee) ; Sedlák, Josef (advisor)
The diploma thesis is focused on the application of modern technologies in ski helmets development. In the theoretical part is performed the research of the protective gear for skiers including the characteristics of production technologies used for its production. Part of the thesis is also the characteristics of Reverse Engineering and Rapid Prototyping. The practical part deals with the design of the ski helmet using modeling clay with the following conversion to a computer model and editing in available CAx program. Part of the practical part is also production on 3D printer. The thesis is concluded with a technical-economic evaluation of applicated modern technologies used for prototype helmet model production.
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Safety Equipment for Motorcyclists
Všianský, Michal ; Svítil, Petr (referee) ; Zdařil, Zdeněk (advisor)
In my thesis I looked for a solution to simplify the transfer and storage of motorcycle helmet. This is the helmet for smaller motorcycles for city traffic, where isn ´t often the sufficient space for helmet storage after the motorcycle is left. I choose this topic because the motorcycles are one of my main hobbies and I know how unpleasant is to move in the city, school or work always with the helmet in your hand because you cannot put it into your backpack or to the standard personal cabinets at school cloakrooms or in the factories. The helmet which I made will reduce its volume by folding approximately about 40% and it makes easier the transfer and enables putting into the storage space, cabinet or hand luggage /backpack, bag/ - as I know acc. to my experience the bikers carry with them. The skeleton and the helmet cushioning is divided into four parts /upper, two side and back/ which enable the folding. The cushioning of the side parts will fill the inside space of the upper part by simple folding, then the side skeleton will be inserted to the upper two-case part and in the last – back part, fixed to the rest of the helmet by the hinges, will fold into the helmet – it covers the above mentioned cushioning of the sides and so it protects its damage. The whole will be fixed by the tightening bend which is also used for helmet fixing on the head. In the dismanted status is everything saved by the locks which connect the back and side parts. The helmet skeleton was made of kevlar which compensates the added weight and also keeps the sufficient solidness. Because of double case enabling the saving of the side parts, the solidity and also the safeness are bitter then by using of normal helmet. The helmet shape is created in easy concept and aerodynamic shape. All details, blending and surface extrudation have the reason. In the bottom is the material enlarged because of locks , in the middle part the enlargement is used for breaking of hanging sides and the cleats on the outside enable the cooling and head airing. For the thesis presentation I make the model 1:1 which cannot be fold up. The skeleton is made with the help of 3D printing and after that colour treated. The cushioning milled on CNC machine of extrude polystyren will be refilled by soft foam and covered by the cloth. The shield protecting eyes will be vacuumed of colourless plastic.
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Phenotypic plasticity and functions of morphological antipredator structures in genus Daphnia
Brož, Vojtěch ; Petrusek, Adam (advisor) ; Šorf, Michal (referee)
Predator-induced defence mechanisms are widespread among animals, plants and other organisms. One of the model taxa for research of this phenomenon is the cladoceran genus Daphnia, as its species of this genus possess many morphological, behavioural and other defence mechanisms. Among the most conspicuous examples are specialized antipredatory structures. In many species, the presence of a helmet, i.e. a head expansion that serves as a protection from various invertebrate predators, can be found. A specific case is represented by two species in which the helmet is involved in protection from planktivorous fish. Another, rather widespread defence is the formation of neckteeth, a specialized structure against predatory larvae of phantom midge (Chaoborus spp.). There are also other less frequent antipredatory structures such as a crest or a "crown of thorns". This thesis summarizes the available information on the distribution, evolution, function and mechanisms of induction of these inducible morphological defence structures.
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Helmet for Virtual and Augmented Reality
Buš, Ondřej ; Přinosil, Jiří (referee) ; Říha, Kamil (advisor)
The thesis focuses on the construction of a functional headset for multimedia content consumption. The acquired theoretical knowledge was used in the design and construction of the resulting headset. The theoretical knowledge was consolidated and extended by practical tests on currently available commercial AR/VR headset solutions. In the practical design, increased effort was made to keep the resulting solution as simple as possible. The components that were used in the work can be obtained relatively easily via the internet. With the help of advanced techniques, the thesis tries to optimize the visual experience. The most suitable parameters of the optical lenses are selected. The optical system is enhanced to provide an extended horizontal field of view. The thesis discusses the fabrication of the headset using the 3D printing method on a 3D printer. Subsequently, the individual parts are assembled into a single functional unit. The result of the thesis is a working prototype headset suitable for multimedia content consumption.
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Application of modern technologies for design and production of a ski helmet prototype
Vilímovský, Daniel ; Pokorný, Zdeněk (referee) ; Sedlák, Josef (advisor)
The diploma thesis is focused on the application of modern technologies in ski helmets development. In the theoretical part is performed the research of the protective gear for skiers including the characteristics of production technologies used for its production. Part of the thesis is also the characteristics of Reverse Engineering and Rapid Prototyping. The practical part deals with the design of the ski helmet using modeling clay with the following conversion to a computer model and editing in available CAx program. Part of the practical part is also production on 3D printer. The thesis is concluded with a technical-economic evaluation of applicated modern technologies used for prototype helmet model production.
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Providing Special Care for Motorcycle Trauma in Prehospital Emergency Care
HAVLŮ, Monika
This thesis deals with providing special care for motorcycle trauma in pre-hospital emergency care. The work has set three goals. The first goal is to map the processes of providing specialized care for trauma bikers both by paramedics and general nurses. The second goal is to map paramedics and nurses' knowledge about the nature of trauma in view of urgent transport to a higher catchment area. The third objective is to map the specifics of bikers from the perspective of paramedics and nurses. To those objectives were to answer three research questions. The research part of the thesis was carried out by a qualitative research. A combination of semi-standardized interview, which consisted of 13 questions, was used for a data collection. There was used the knowledge test, too, which consisted of 21 questions. Semi-structured interviews and knowledge tests were conducted with randomly selected paramedics and nurses working in Emergency Medical Services in Vysocina Region and South- Bohemia Region. The results of the knowledge tests were arranged into tables. Semi-structured interviews were transcribed and processed into tables. There is the list of semi-standardized interview questions and a knowledge test in the attachment. The research showed that knowledge of paramedics and nurses working in Emergency Medical Services in Vysocina region are more optimal than in the South Bohemia Region. However, the differences are minimal. Only one question, number 9, which is related to the knowledge of neurogenic shock, showed insufficient knowledge, when only 8 out of 40 respondents answered correctly. Other mapped knowledge is good, in some areas is excellent. In conclusion I would like to say that despite excellent knowledge of paramedics and nurses working in emergency medical services there is still some space left for further training, especially in specific injuries and complications of injuries, which may occur at motorcyclists. I think it is important to be knowledgeable and educated in this issue because a good training practice of pre-hospital emergency care is crucial for the further development of the patient's condition. This issue could be supported by this thesis, which tries to be a comprehensive overview of the problem of motorcyclists and procedures providing special care for motorcycle trauma in pre-hospital emergency care.
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Safety Equipment for Motorcyclists
Všianský, Michal ; Svítil, Petr (referee) ; Zdařil, Zdeněk (advisor)
In my thesis I looked for a solution to simplify the transfer and storage of motorcycle helmet. This is the helmet for smaller motorcycles for city traffic, where isn ´t often the sufficient space for helmet storage after the motorcycle is left. I choose this topic because the motorcycles are one of my main hobbies and I know how unpleasant is to move in the city, school or work always with the helmet in your hand because you cannot put it into your backpack or to the standard personal cabinets at school cloakrooms or in the factories. The helmet which I made will reduce its volume by folding approximately about 40% and it makes easier the transfer and enables putting into the storage space, cabinet or hand luggage /backpack, bag/ - as I know acc. to my experience the bikers carry with them. The skeleton and the helmet cushioning is divided into four parts /upper, two side and back/ which enable the folding. The cushioning of the side parts will fill the inside space of the upper part by simple folding, then the side skeleton will be inserted to the upper two-case part and in the last – back part, fixed to the rest of the helmet by the hinges, will fold into the helmet – it covers the above mentioned cushioning of the sides and so it protects its damage. The whole will be fixed by the tightening bend which is also used for helmet fixing on the head. In the dismanted status is everything saved by the locks which connect the back and side parts. The helmet skeleton was made of kevlar which compensates the added weight and also keeps the sufficient solidness. Because of double case enabling the saving of the side parts, the solidity and also the safeness are bitter then by using of normal helmet. The helmet shape is created in easy concept and aerodynamic shape. All details, blending and surface extrudation have the reason. In the bottom is the material enlarged because of locks , in the middle part the enlargement is used for breaking of hanging sides and the cleats on the outside enable the cooling and head airing. For the thesis presentation I make the model 1:1 which cannot be fold up. The skeleton is made with the help of 3D printing and after that colour treated. The cushioning milled on CNC machine of extrude polystyren will be refilled by soft foam and covered by the cloth. The shield protecting eyes will be vacuumed of colourless plastic.
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