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Automated trading systems
Šafář, Vítězslav ; Hříbek, David (referee) ; Rozman, Jaroslav (advisor)
Trading in the financial market is something almost everyone has heard of these days, but automated trading is still a novelty for most. The aim of this bachelor's thesis is to design and create several automatic trading systems using the application programming interface provided by XTB, and subsequently evaluate these automated trading systems using historical data. The thesis presents four differently complex automated trading systems, achieving various profits at certain risk levels. Furthermore, the thesis demonstrates the usability of the mentioned XTB application programming interface. The best-designed system evaluated was the one utilizing the MACD indicator,which achieved an average annual return of around 13.5 % with a level of risk of loss, approximately 39 %.
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Concentration of magnetic flux at microscale
Střecha, Jan ; Wojewoda, Ondřej (referee) ; Staňo, Michal (advisor)
Magnetic concentrators are used to amplify the detected field by magnetic sensors or as cores in coils to direct the magnetic field. This work focuses on magnetic field concentrators at the microscopic scale and aims to design various metamaterials and geometries that could be used to enhance the magnetic field. The simulations use the program Mumax3, which employs the finite difference method and discretizes space into small cuboids to solve the time dependence of magnetization. Initially, the "petal" geometry was investigated, with a concentrator diameter of 5 m, and the simulated amplification value was determined upon applying an external field. Subsequently, metamaterials made of permalloy NiFe were created from the initial petal shape, consisting of small equilateral triangles with a size of less than 0.5 m, varying the distance between individual elements and their thickness. A petal with a thickness of 15 nm achieves an amplification of 2, while the examined geometries achieved amplifications of less than 1.2 for the same thickness. The results that achieved the highest value, around 1.8, were for thicknesses of 60 nm.
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A review study of dental mini-implants
Pernický, Vojtěch ; Hrubanová, Anna (referee) ; Marcián, Petr (advisor)
This thesis focuses on the study of dental mini-implants, which are becoming a popular choice for replacing missing teeth and retaining overdentures. The insertion of mini-implants is a less invasive procedure that minimizes damage to bone tissue, which shortens the patient's recovery time. One of the key advantages is the possibility of immediate loading of the implant. However, the smaller diameter of these implants means a smaller surface area for osseointegration, which can negatively affect their stability and functionality. This thesis deals with the analysis of deformation and stress states by using computational modeling. The results of this analysis are compared with standard implants to evaluate the mechanical behaviour of mini-implants and their interaction with bone tissue. Based on the results of the analysis, it can be said that the diameter of the implant significantly influences its deformation-stress states.
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Manufacturing of the wheel center cap
Jiřánek, Jakub ; Štroner, Marek (referee) ; Císařová, Michaela (advisor)
The bachelor´s thesis deals with the production of a protective rotary wheel center cap for the hub shaft of a car. It is made of steel 11 320 and the production volume has been set at 120 000 units per year. Among the possible manufacturing technologies, deep drawing was chosen as the most suitable. The diameter of the blank from which the cover is drawn was determined by calculation to be 110 mm. The number of drawing operations was calculated to be one. The total force required for the manufacture of the component was calculated to be 85 kN. According to decisive criteria, a single-acting hydraulic press CUPS 16 DEU from HŠV Polička was chosen, for which a drawing tool was designed. Finally, drawing documentation was created for the cover, assembly of the tool with the die, punch, blank holder and the body of the blank holder.
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Biomimetics and its Incorporation into High School Teaching through Learning Tasks
Suldovská, Eva ; Říhová, Dagmar (advisor) ; Pavlasová, Lenka (referee)
The main aim of this thesis was to create and practically test four sets of complex learning tasks intended for pupils in the second year of high school. The tasks are focused on the development of science literacy using the topic of biomimetics. The starting point for the development of the learning tasks was a literature review dealing with topics of biomimetics, subject integration, science literacy and learning tasks. Biomimetics is a multidisciplinary science based on the observation of nature and searching for inspiration in nature in order to find solutions to problems that people face in life. Due to the topicality, practical overlap and interdisciplinary nature of this field, the topic of biomimetics is an excellent tool for applying integrated learning concepts (e.g. STEM concept) into teaching or for developing science literacy. In this work, created complex learning tasks containing three subtasks each were validated in three second-year classes of selected high schools. The pupils' responses to the created tasks and the responses from the attitudinal questionnaires were analyzed using mixed research methods. Statistical methods (arithmetic mean, relative frequency, success rate) were used for quantitative evaluation. The method of inductive analysis of written gathered data was used...
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Government expenditure on education
ŠMEJKALOVÁ, Eliška
The bachelor thesis deals with government expenditure on education in the Czech Republic. Education is characterized as a publicly provided good. The thesis discusses the reasons why it is appropriate for the state to finance education from public budgets. It classifies education in the Czech Republic and describes the method of public financing of education. The data sources are mainly values from the OECD statistical database. An important part of this thesis is an analysis of the level and dynamics of government expenditure on education in international comparison. The comparison of government expenditure on education is made by several indicators, such as government expenditure on education expressed as a proportion of GDP, government expenditure on education per capita, government expenditure on education expressed as a proportion of total government expenditure and percentage comparison of public and private sector financing of educational institutions. The results of the analyses show that the Czech Republic's government expenditure on education is lower than the average of OECD countries. An important part of the thesis is the search for a link between government expenditure on education and the Better life index. This index allows for a comparison of well-being across countries based on eleven indicators that the OECD considers essential in terms of living conditions and quality of life. When we compared the Czech Republic's position in the Better Life Index values for the education indicator variable, we concluded that the Czech Republic was higher in the Better Life Index education scores than in the analyses of government spending on education. A correlation analysis was used to find the relationship between the level of government spending on education and some of the Better life index indicators, namely the indicators of years in education, quality of support network and life satisfaction.
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Specifika chovu ovcí plemene dorper
KLOUČKOVÁ, Karolína
The aim of the bachelor thesis was to assess the performance and reproductive indices in the selected breed. The assessment was carried out on a total of 10 dorper lambs, 5 of which were males and 5 females. Each of the animals was weighed and measured for back muscle height at the performance control, in 2021 at 3 months of lambing age and in 2022 at 4 months of lambing age. When the above traits were evaluated, it was found that the highest values were achieved in the lambs in 2021, when the average weight at 100 days of age was 42,09 kg, the average daily gain over the period was 421 g and the height of the back muscle at 100 days of age was 34,5 mm. When comparing the reproductive indices for the years 2021-2022, it was found that the results in the selected breed for the fertility index and the vigour index were identical, the only difference being in the rearing index, which was 0.02 higher than the national average in the selected breed. In the comparison from the exterior evaluation of the lambs, it was found that better results were achieved in 2021, when all lambs placed in the final class 5.
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Analýza výskytu a příčin zánětů vemene v chovu dojnic
MESTLOVÁ, Kristýna
Bovine mastitis is the most frequent, serious and costly disease of dairy cows. The thesis deals with the evaluation of the frequency of mastitis and its relation to the somatic cells counts in milk in two dairy herds. In addition, it concentrates knowledge in the area of their monitoring, prevention of occurrence and summarizes the most common causes, treatment options and economic impacts in dairy herds. Data from the period 2022 - 2023 were used for the evaluation. The first herd was composed of Czech Fleckvieh cattle cows, the second herd of Holstein dairy cows. In 2022, the average number of somatic cells (SCC) in the first herd was 270 thousand/ml, and in 2023 the number increased to 317 thousand/ml of milk. In the second herd, SCC in 2022 averaged 345 thousand/ml, and in 2023 it increased to 361 thousand/ml of milk. In the first herd with the number of mastitis, the arithmetic mean of PSB often rises. But this does not apply in the second herd. PSB was highest in both herds during the summer months. The average PSB in the Holstein cattle herd was overall higher than in the Czech Fleckvieh cattle herd, despite the fact that, according to the available information, prevention against mastitis is much more perfect in the Holstein herd. In both monitored herds, the highest number of cases occurred in the period from 101 to 200 days of lactation, and the fewest occurred in the period from 31 to 60 days of lactation. In both herds, there are dairy cows that do not show the clinical form of the disease, but have a permanently increased number of somatic cells. A total of 108 treated animals were recorded in the herd 1 and 108 cows in the herd 2, and the number of somatic cells at the time of developing the disease was not always authoritative.
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Micro-lattice structures with variable strut diameter
Brulík, Karel ; Jaroš, Jan (referee) ; Červinek, Ondřej (advisor)
Due to their specific properties, micro-lattice structures have a great potential for use in energy absorption applications. It turns out that conventional micro-lattice structures with constant volume fraction can be designed for a known amount of absorbed energy. In real applications, however, we often do not know it in advance. Therefore, the use of functionally graded micro-lattice structures, which can be designed for a wider range of applied energies, appears to be more promising. The aim of this work is to compare micro-lattice structures with variable strut diameter made from 316L stainless steel by Selective Laser Melting technology in terms of energy absorption capability. For this purpose, two types of structures, F2BCC and F2BCC_45, were fabricated, both in configuration with constant, continuously variable and stepwise variable strut diameter. The structures were subsequently dynamically loaded using a drop-weight test, the results of which were described by the time history of deformation and forces. The greater amount of absorbed energy was measured for structures of type F2BCC_45, up to 73 % depending on the configuration of the structures. The results revealed that the variable strut diameter does not have a large effect on the amount of absorbed energy, but it significantly reduces the shock generated, up to 54 % depending on the type and configuration of the structure. This thesis provides a comprehensive view of the deformation and stress characteristics of both types of structures, and in particular a comparison of the effect of variable strut diameter.
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The influence of the diameter and depth of the hole in the whistle on the timbre and directionality
Borovičková, Barbora ; Mojdl, Edgar (referee) ; Jirásek, Ondřej (advisor)
This bachelor’s thesis examines the influence of the diameter and depth of the holes in the recorder on the timbre and directionality of the resulting tone. For measurements and subsequent data analysis, nine flute body prototypes were made from three different materials and with three different wall thicknesses. During the measurement, holes with different diameters were drilled into the prototypes. Thanks to this procedure, it was possible to separate desirable influences from undesirable ones. The measured data were analyzed in the Matlab environment.
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