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Influence of Dynamic Neuromuscular Stabilization Approach on Maximum Kayak Paddling Power
Davídek, Pavel ; Kobesová, Alena (advisor) ; Kolář, Pavel (referee) ; Matoulek, Martin (referee)
INTRODUCTION: The aim of this thesis is to identify the effect of trunk stabilization training based on Dynamic Neuromuscular Stabilization (DNS) on maximum kayak ergometer power output and reported self-disability in the shoulder girdle area. METHOD: Thirty flatwater kayakers of both genders (17 - 25 years old) were randomly divided into two groups. Crossover design was used for this study. Subjects in the experimental group (group A) integrated DNS exercises into standard flatwater training during the first phase. The control group (group B) conducted only common flat water training at the same time. After 6 weeks, the groups were switched. Then group B underwent the same DNS exercise with the same intensity and the same time. The intervention was the same for both phases and took 6 weeks. Group A performed only standard off-season training during the second phase. The maximum power output on kayak ergometer was measured three times (before study, after 6 weeks and after 12 weeks). Disabilities of the Arm, Shoulder and Hand (DASH) were analyzed at the same time. RESULTS: Initially, no significant differences in maximum power output on kayak ergometer and the DASH questionnaire score were identified between the groups. During the first phase the experimental group (group A) improved the maximum...
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The meaning of the online worship from a post-covidian perspective
Doležal, Jan ; Vogel, Jiří (advisor) ; Kolář, Pavel (referee)
The bachelor's thesis titled "The meaning of the online worship from a post-covidian Perspective" explores the utilization of live broadcasting and digital recordings of worship services in the congregations of the Czechoslovak Hussite Church during the COVID-19 pandemic. The first part of the thesis provides an overview of the issues related to the digitalization of worship services through foreign studies. The second part is dedicated to research and the evaluation of specific data obtained from a questionnaire, that are subsequently compared with the theoretical part of the thesis.
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Effects of Non-Linear Stiffness on Turn Process Stability in Horizontal Turning Machines
Hadraba, Petr ; Chih-Chun, Douglas Cheng, (referee) ; Kolář, Petr (referee) ; Hadaš, Zdeněk (advisor)
Nelineární tuhost ovlivňuje dynamiku moderních obráběcícho strojů. Důležitým parametrem produktivity obráběcího stroje jsou samobuzené vibrace, které omezuje výkon obráběcího stroje. Tato práce byla motivována průmyslovým případem, kdy chování obráběcího stroje nelze předvídat tradičními metodami a stroj vykazuje významnou změnou dynamického chování. Tato práce krok za krokem představuje analýzu, která byla zaměřena na simulaci samobuzených vibrací a vlivu nelineární tuhosti na výslednou stabilitu chvění. Se zvyšující se složitostí modelu byl představen linearizační přístup, který umožňuje rychlejší analýzu stability obrábění. Pro lepší mapování a tvorbu stabilitního lobe diagramu pro nelineární strukturu je uveden algoritmus syntézy linearizovaných řešení v pracovním bodě. Linearizační přístup byl kombinován s nelineární statickou simulací s ohledem na model nelineárního chování lineárního kuličkového vedení a použit pro predikci chování chvění. Nelineární statický model využívá metodu dynamické kosimulace a substrukturování, aby do analýzy začlenil účinky strukturální deformace. Experimentální zkouška obrábění umožnila porovnat výsledky analýzy a prokázala dobrou shodu s maximálními frekvenčními odchylkami v pásmu 3 Hz.
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Principles of the circular economy in the automotive industry
KOLÁŘ, Petr
This thesis deals with the issue of circular economy and the automotive industry. The main aim of the thesis is to evaluate the levels of circular economy principles in the automotive industry based on the analysis carried out. The sub-objective of the thesis is a proposal to improve the current situation. The aim is to find out what level of acceptance of the circular economy in the automotive industry the Czech Republic achieves in comparison with other European Union countries and how it could improve this level. Furthermore, the thesis analyses what is the development and to what extent the renewal of the automotive fleet in the Czech Republic is going on. Due to the availability of data, the time period from 2009/2010 to 2021/2022 is examined. The principle of use of the circular material rate in the automotive industry and the principle of fleet renewal are analysed. Finally, for both principles, a proposal for improving the current situation is given. The resulting resulting calculated data and suggestions for improvement provide an opportunity for future predictions. These can be useful, for example, for those in the automotive industry who are considering the future direction of the company. A positive finding of the thesis is that the Czech Republic has made a significant advance in the rate of circular material use in the automotive industry over the period studied, and a positive trend can be seen for future years. On the other hand, there are still considerable reserves in the renewal of the automotive fleet and much room for improvement.
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Outreach of an Exoplanet Research and the PLATO Space Mission in the Czech Republic
Dupkala, Daniel ; Drozd, Zdeněk (advisor) ; Kolář, Petr (referee)
The extrasolar planets have become one of the most exciting and promising research fields in modern astronomy. They could reveal the answers to some of the biggest questions such as the origin of life, planetary evolution, or the existence of extraterrestrial life in the universe. Exoplanets also present a unique option for scientific outreach as they are easy to imagine and understand. In this thesis, the current research, its history, and future plans are described with a focus on Czech participation in it. Especially the PLATO mission will give the Czech Republic a front seat in exoplanetary science. Various outreach activities are presented both conducted by the author and proposed for the future. A special focus was given to the work with talented high school students. Three activities were organized with the aim to present the research on the exoplanets to students and to give them the opportunity to try and participate in it. These activities covered the area of astronomical observations, the analysis of the light curves from the transit photometry, and finally the data processing of the stellar spectra for the radial velocity measurements. The activities were evaluated for future reference. 1
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The Automotive Industry and Its Influence on the Economic Situation in the Selected Region
KOLÁŘ, Petr
This thesis deals with the automotive industry and its impact on the economic situation in the South Bohemian Region. The aim is to analyse and evaluate selected indicators and their influence on the selected indicators of the number of employees in the region in the monitored period. The surveyed indicators include unemployment, number of employees outside the automotive industry, average gross wage, number of enterprises and sales per employee in the automotive industry in the South Bohemian Region. The main factors and dependencies are evaluated using econometric and statistical methods.
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