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Asteroid models reconstructed from photometric data and stellar occultations
Černý, Dominik ; Ďurech, Josef (advisor) ; Scheirich, Petr (referee)
Asteroids are the most numerous group of bodies in our Solar System. However, our observations are limited because of their size and distance. Occultations allow us to determine the shape and size of even the smaller asteroids with kilometer precision. All observations of occultations are publicly available, but not generally used in modelling of asteroids. Even thou occultations can scale models from light curves and solve their pole ambiguity, most models are created only from light curves. The aim of this thesis is to implement occultations in the process of asteroids' modelling. in my bachelor thesis I have scaled already existing models for 274 asteroids thus determined their precise dimensions and solved the pole ambiguity in some cases. In this thesis I have created new models using occultations. The occultations allows me to create new and more precise models than light curves alone with non-convex features, thus expanding our knowledge of asteroids. 1
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Technical and technological audit of the water treatment plant
Jedličková, Tereza ; Svoboda, Pavel (referee) ; Kučera, Tomáš (advisor)
The aim of the submitted diploma thesis is the implementation and evaluation of the technical and technological audit of water management systems of water treatment plants – concretely Plzeň Water Treatment Plants. Part of its audit is a description of potable water production, including the evaluation of the TEA Water treatment plant, evaluation of quality assurance of raw and produced drinking water, analysis of costs and pricing costing, personnel evaluation, care of the plant and draft measures for better working of the whole system. The work also focuses on the characteristics, history and the past reconstruction and more detailed description of the individual cleaning stages of the selected water treatment plant in Pilsen. The audit itself was preceded by the study of current legislation, namely the Law No. 274/2001 Coll. and Decree No. 428/2001 Coll. The diploma thesis also describes performing laboratory analyzes in an accredited laboratory of Plzeň Water Treatment Plants.
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Battery pack for an electric car
List, Jaroslav ; Kalivoda, Milan (referee) ; Polzer, Aleš (advisor)
Thesis deals with the design of a battery box with lithium-ion technology, for the largest possible driving range of the BUT SuperEL II electric car. Based on the analysis of the electric vehicle available space and the parameters of the electronic system, the maximum size of the entire set of 84s130p batteries was designed. 18650 cells with NMC technology were selected due to the very high gravimetric and volumetric density, which reaches 274 Wh/kg and 564 kWh/m3. The total nominal capacity of the designed battery boxes in the electric car is 138 kWh. The total gravimetric energy density of the designed box is 215.6 Wh/kg. It allows the electric car to reach the theoretical range with a consumption of 14 kWh/100 km of almost 1000 km. The individual battery modules of the battery box are controlled for optimal operating conditions by means of a BMS. The whole set is divided into 5 battery boxes. These boxes are manufactured using the technology of bent welded sheets from aluminum alloy EN AW 1050A and steel 1.4301. FEM analyzes were performed to verify the mechanical strength of the designed structure. The work also deals with the design of battery modules and their connection.
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Causes of dropout in children's leisure activities
HOTOVÁ, Andrea
The bachelor thesis focuses on the issue of drop-out of older school-age children from leisure activities. The thesis investigates the specific reasons why children at this age drop out of their leisure activities. The topic of leisure time and its content is a topical one, leisure time is an integral part of children's lives, so it is important to address the question of why they drop out of leisure activities and what can help them stay in them.
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Evaluation of muscle strength and endurance of lactating women
Melicharová, Nikola ; Kovařík, Miroslav (advisor) ; Rathouská, Jana (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Biological and Medical Sciences Student: Nikola Melicharová Supervisor of master thesis: PharmDr. Miroslav Kovařík, Ph.D. Title of master thesis: Evaluation of muscle strength and endurance of lactating women This work aims to evaluate the change in the parameters of muscle strength and endurance of the upper and lower limbs in women during breastfeeding. Compare these measured values between the right and left limbs. Another goal is to test the connection between dynamometric parameters and the intake of micronutrients in food supplements. 10 lactating women aged 29-39 took part in the measurement. The women were examined four times. The first examination L1 took place on average 29 ± 5 days postpartum, the second L2 93 ± 29, the third L3 179 ± 15, and the last measurement was L4 274 ± 3 days postpartum. A digital pinch/grip analyzer and digital myometer were used to measure muscle strength and endurance of the upper and lower limbs. We used the BCM - Body Composition Monitor device to measure fat-free mass. Weight was measured for women using a body analysis scale from Tanita. When evaluating the measured results, we discovered a statistically significant difference between the values of the maximum strength of the left hand...
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Representation of sources of omega-3 fatty acids in the school canteen menu concept and proposing options for improving utility basket indicators
ČANDA, Jan
The topic of this diploma thesis is called Representation of sources of omega-3 fatty acids in the school canteen menu concept and proposing options for improving utility basket indicators. The task of the diploma thesis is to find out whether school canteens successfully meet the standard of the consumer basket and nutritional standards for school meals in the fish commodity. The work is divided into two parts. The theoretical part describes topics related to omega-3 fatty acids and their sources, school catering legislation and the last chapter is a consumer basket, which was obtained from scientific and professional publications, which are searched in domestic and foreign databases of scientific and professional literature. The practical part contains the results of filling the consumer basket in fish commodity at schools in the South Bohemian Region of the Czech Republic, which then compares the results with the recommendations of the Decree of the Ministry of Education of the Czech Republic nr. 107/2005. Key
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Transformations of teaching of history at grammar schools in Klatovy region between 1971-1995
POTUŽÁK, Jaromír
The last quarter of 20th century was a very dynamic period full of changes, not only in society but also in teaching. History has undergone the same turbulent development, not only as a school subject. The aim of this work is to describe the development of teaching at this type of secondary schools in Czechoslovakia on the example of two grammar schools in the Klatovy district (Sušice and Klatovy) with an emphasis on teaching history between the years 1971 and 1995. On the basis of archival materials, recollections of witnesses and contemporary professional journal discussions; theoretical concepts and the degree of their fulfillment in everyday practice will be compared. Therefore, the research will also include an analysis of school-leaving examinations in history with an emphasis on their content change in this period. In addition to archival material, the method of oral history will be used, which will bring a comparison of theory with practice in teaching at the time, with narrators becoming not only students but also teachers. The text will also include a didactic part, in which I will focus on the analysis of teaching methods and teaching aids (especially textbooks).
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The Ecology of the Little Owl in European Farmland
CHRENKOVÁ, Monika
The little owl population in the most of Europe is rapidly declining mainly due to dramatic changes and transformation of the agricultural landscape, which resulted in the loss of suitable foraging habitats. Due to rapid population decline and range contraction, urgent conservation measures have to be implemented to save the population from extinction in certain areas. The thesis aims were to identify long-term population trend in selected regions, to uncover the habitat selection of breeding birds and to evaluate the effectiveness of individual management measures for the little owl conservation in the European farmland. The research on population status in Czech Republic and Slovakia revealed long-term population decline and marked distributional range contraction of the little owl, documenting its rapid local extinctions over the last two decades. On the contrary, results from Hortobagy National Park,representing the first large-area systematic survey in Hungary, indicate high population density and its widespread distribution. In particular, the study uncovers one of the highest population densities of this species from an agricultural landscape in Central Europe. Further detailed investigation of habitat selection at three different scales shows the link between certain habitat characteristics and species occurrence and supports the hypothesis of agriculture intensification being the main driver of the population decline of little owl in the Central Europe. Finally, the thesis provides evidence on the effect of different conservation management measures on little owl population in Denmark, where the species is close to extinction. Research findings indicate that food limitation during the breeding season may be the main reason for the declining numbers of little owls in Denmark. To prevent little owl extinction, evidence based conservation measures, such as provision of suitable foraging habitats with high availability and good accessibility of prey close to nests, are inevitable.
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Stellar occultations by asteroids
Černý, Dominik ; Ďurech, Josef (advisor) ; Hanuš, Josef (referee)
The thesis deals with the processing of data from stellar occultation observations, which are available online. The main goal is to verify whether asteroid models from inversion techniques correspond with the observations or, if an asteroid has more models, to determine which one fits better. Data are processed using a~series of programs in Matlab studio that plot the projections of observations and models on the same plane. The comparison of models with occultations is then done based on generated graphs. This method also enables the computation of the diameter of asteroids, which is compared with previously obtained values. Overall, 516 occultations for 274 asteroids were processed. At least one model is suitable for 190 asteroids, 40 asteroids had no corresponding model and 44 have their occultations observed insufficiently. For most asteroids with a suitable model, the computed diameter corresponds to previous observations in the IR spectrum. However, in some cases, the observations of occultations were sufficient for model verification but insufficient for confident diameter computation.
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