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Stabilitní analýza ocelových konstrukcí s imperfekcemi
Kalina, Martin ; Krejsa, Martin (referee) ; Kala, Jiří (referee) ; Kala, Zdeněk (advisor)
The aim of this work is focused on soluti0on stability problem of planar bar structures. The calculation algorithms and methods used for analysis of behavior of these structures are described. The discrete computational model of steel of von Mises planar truss is presented. The structure deformation is evaluated by seeking the minimal potential energy. The effect of vertical displacement of top joint is determined by step-by-step method, and Newton iteration. Symmetric and asymmetric effects of initial shape of geometric imperfections of axes of struts are used in the model. The work is focused on another step in research of mapping of potential energy of elastic structures with aim at arch structures. For selected hinged arch loaded by displacement in the midpoint, the area of two concurrently existing postcritical statical equilibrium states is scanned using dynamical relaxation and applying of a set of designed mapping methods.
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Parametric Resonance of Dynamic Systems
Gajdůšková, Vendula ; Sosna, Petr (referee) ; Hadaš, Zdeněk (advisor)
The Bachelor’s Thesis deals with the parametric resonance which is investigated from the physical point of view by means of pendulum models, for which the equation of motion has been developed and subsequent modelling has been performed. The brief introduction is followed by a theoretical chapter which deals with the physical substance of parametric resonance and in which chosen physical models are described. The practical part of the thesis begins with the following chapter devoted to chosen examples of parametric resonance in practice, showing its benefits and harmful attributes on selected examples. The fourth and the main part of the thesis contains a simulation model of parametric resonance for two pliantly bound pendulums. The concluding part of the thesis consists of the summary of findings, model results and the list of used resources, abbreviations, figures and table.
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Parametric Resonance of Dynamic Systems
Gajdůšková, Vendula ; Sosna, Petr (referee) ; Hadaš, Zdeněk (advisor)
The Bachelor’s Thesis deals with the parametric resonance which is investigated from the physical point of view by means of pendulum models, for which the equation of motion has been developed and subsequent modelling has been performed. The brief introduction is followed by a theoretical chapter which deals with the physical substance of parametric resonance and in which chosen physical models are described. The practical part of the thesis begins with the following chapter devoted to chosen examples of parametric resonance in practice, showing its benefits and harmful attributes on selected examples. The fourth and the main part of the thesis contains a simulation model of parametric resonance for two pliantly bound pendulums. The concluding part of the thesis consists of the summary of findings, model results and the list of used resources, abbreviations, figures and table.
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Prediction of Quadruplex Structure
Mikula, Adrian ; Lexa, Matej (referee) ; Martínek, Tomáš (advisor)
This master's thesis focuses on search and structure prediction of quadruplexes in DNA sequences. Thesis also explains related terms that are important for understanding the function, properties and geometry of quadruplexes. Thesis describe physico-chemical and computational current methods, which possible to discover and structure prediction. This paper also explain the principle of molecular modelling, which was used in the final application. Design and implementation of the final algorithm are also part of this thesis.
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Videosequention and their usage by physics education at basic school
MATĚJŮ, Petr
The Thesis "Videosequences and their use in teaching physics at the elementary school" provides a basic understanding of the issue of the use of audiovisual technology in an environment at the elementary school, focusing on the integration of video in teaching physics at the second stage. It describes the possibilities of video sources on the Internet and instructions for their preparation and to their own creation. The Thesis is also based on practical experiences that means the inclusion of specific movies in two selected topics in teaching physics.
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Model Solutions to Energy Supply Local Transportation and Alternative Sources of Transportation
Krtička, Miroslav ; Pirožek, Petr (advisor) ; Mareš, Milan (referee) ; Žufan, Pavel (referee)
The Thesis are focused on the area of strategic management using the strategies selection and decision making processes, based on the Game Theory apparatus. The analyses of local energy sources potential and possible use in local transportation are the basis of the Thesis. The problems of energy maintenance and efficient utilisation have not decreasing its importance even in the situation of technology & technical improvements; there are no universally-suitable processes found in this area. One of the approaches should be in the philosophy of maximising the utilisation of local resources to minimise the expenses of the transportation of the energies itself. The Thesis are focused on the increased efficiency of local energy-resources utilisation combined with continuously increasing energy demands in the area of transportation area. The Target is to construct model, having proportionally characterised the suitable strategies to the decision -- making in the areas of local energies production and/or their utilisation in the area of the local transportation demand saturation. The Game Theory approaches creating the basis for the different interested groups; it allows to compare the advantages of different options / strategies of the progress, having respected counter-strategies of the other parties of the conflict situation. The recommendation of the most advantageous strategies for the individual interested groups of the conflict (transport companies, potential producers of energies from local resources, society) is the result of the process. The construction of the model, having the ability to compare the merits of different options -- related to the energies-utilisation (strategies) is the contribution of the thesis. There is specific approach given to allow finding the results suitable for both interested parties of the conflict situation (producers of the organic matter for the energy production, potential energy producers, local transporting companies). All the results are based mainly on the verified statistic data sources. Resulting model allow good and transparent comparison of different strategies of the different interested groups related to the energy resources. The results could work not only in the area of theoretical calculations, but also companies and interested parties strategies recommendations to their own decision-making processes.
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