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1
Doležal, Kamil. „Výpočtová analýza jízdního chování vozidla“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254421.
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The diploma thesis deals with computational analysis of driving behavior of a vehicle. The first section summarizes and explains the basic parameters of steering geometry. Next section covers the tests which are used to study driving behavior of vehicles. The practical part consists of computational model that is able to simulate and evaluate tests of step steer input.
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Babáková, Andrea. „Spotřební chování“. Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-76223.
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The thesis focuses on investigating and searching for differences between consumer behavior of Czech and Slovak households depending on chosen socioeconomic factors. For the purpose of this thesis source materials are taken mainly from researches realized by Czech and Slovak Statistical Office, specifically from survey sampling Household Budget Study 2009. Data are analyzed through the use of comprehensive characteristics of location, variability and box diagrams. Generalized linear models are used for modeling dependence of consumer behavior on chosen quantitative and qualitative factors. Household consumer behavior is expressed through economic index - propensity to consume - which is determined by the share of total monthly income and expenditures.
3
Bašus, Martin. „Model postimplementačního chování uživatelů ERP systému“. Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-72726.
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The master thesis deals with ERP implementation projects, especially in context of post-implementation phase. It examines the impact of user behavior on the realized benefits of the newly established information system. Important point of the thesis is the acceptance of the system by users and their resistance to change. Significant causal relationships with the potential to influence successfull ERP implementation are described. By using system dynamics approach the model is created and simulations are then carried out. Subsequently, the results are presented and analyzed.
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Jirgl, Miroslav. „Analýza modelů chování pilota při řízení letu letounu“. Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-255293.
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This thesis deals with human – pilot behaviour modelling during a flight in terms of automatic control systems. For these purposes, the introduction to the issue of description and modelling of individual components of the whole pilot – aircraft interaction is presented. Based on that, the simulation models obtained from real measured data are designed. However, the acquisition of the real flight data is quite difficult. Therefore, the flight simulator at Brno University of Defence is used for the purposes of this work. Several experimental measurements were taken using this simulator. These were focused on measuring pilot’s reactions (responses) to visual stimulus with emphasis on obtaining judgements about their current state of training (in terms of dynamic behaviour) as well as attitude to aircraft control. In this phase, two sets of measurements with eight pilots were taken. On average, the pilots had 60 flight hours before the first set of measurements and about 80 flight hours before the second set. The obtained results are analysed using mainly the theory of automatic control approaches in order to evaluate the actual state of pilots’ abilities considering the effects of flight training.
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Pač, Peter. „Agentní model procesu kognice, emocí a chování člověka“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236334.
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This work deals with modeling of the human psyche and its cognitive processes, emotions and behaviors based on agent system. The first objective of this examines the issue from the perspective of general psychology and intelligent systems. The work discusses in detail the design model of the human psyche with definitions of agents system and design of simulation environment. The special part is devoted to the design of the neural network system. After description of implementation of the model and simulation environment, finally, the work show results of experiments with the implemented system from the perspective of conformity with psychological theories and benefits to artificial intelligence.
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Vitásková, Petra. „Studie chování konstrukcí dřevěných lávek“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226646.
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Master’s thesis „Behavioral studies of the timber footbridges structures“ deals with static models of timber footbridges. This thesis mainly consists of the behavioral study of historical timber footbridge in the village of Černvír in Vysočina. Based on the actual design of the bridge a three-dimensional beam model was created. This thesis also includes two contemporary alternatives of timber covered bridges. The individual structural elements were assessed according to the applicable standards. To analyze the model FEM program SCIA Engineer 2012 was used.
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Hájek, Jiří. „Zkoumání chování distribučního řetězce na příkladu Beer Game“. Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-76112.
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The paper examines the behavior of the supply chain through a system dynamic model. The theoretical part presents system dynamics, the Beer game and the simulation environment in which the model was created. In the practical part, the response of five surveyed decision-making order rules on the 4 patterns of demand is analyzed.
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Straka, Richard. „Model strategického rozhodování ve vícehráčové hře s prvky kooperativního chování“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236212.
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This work concentrates on the study of mathematical models of human behaviour in dynamic games; in particular games with aspects of cooperation, implementation of a model and experimentation with the model. The game DarkElf was chosen for this project. It is a strategic, turn based game with economic and military features, where the decisions made by players are simultaneously implemented at a predetermined time.
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Kopeček, Josef. „Analýza chování koleje na účinky železničních vozidel“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409743.
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The diploma thesis deals with the assembly of numerical models of classical track using the finite element method in several variants. Models are compared with results obtained on analytical models. More complex models simulate the real behavior of a track running on a railway vehicle. The purpose is created methodology of modeling the railway track for use in static and dynamic analysis.
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Zábojník, Jakub. „Využití knihovny HAM-Tools pro simulaci tepelného chování rodinného domu“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231126.
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In terms of master’s thesis HAM-Tools library designed for MATLAB/Simulink was modified for the use in simulations of houses in the Czech Republic. Modified library and its parts were described in detail and tested by the simulation of the one-zone and two-zones models of the house. The simulations of models with same parameters were also realized in program TRNSYS. The corresponding results achieved in mentioned simulation tools were compared to each other. The one-zone model created by using HAM-Tools library is tested by the simulation of ventilating, heating, cooling, and sources of moisture. A demonstration of the practical use of the simulation is carried out in the thesis, namely by examining the influence of the insulation thickness on the thermal performance of the house (resp. its heat loss) on real atmospheric conditions. Among others, available resources of meteorological data are mentioned and compared to each other. The function for processing of the meteorological data to a file compatible with the HAM-Tools library was created. It was also created a material data file containing commonly used materials of building structures in the Czech Republic and their parameters.
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Svačinová, Hana. „Chování lidí v projektech procesních změn“. Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-149964.
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The aim of this work is to acquaint the reader with the theory of human resources management, process reengineering area and related expressions. The work identifies personal types or groups of persons involved in the process reengineering projects and availability of defined human resources on the Czech market. Theoretical knowledge is described on two real projects of process reengineering - in small and purely Czech company and in large multinational company. On these projects also participated teams of different HR composition and scale, which allow to show interesting differences. Two projects only are certainly not relevant for the sample of general conclusions, but they are very useful to demonstrate specific examples of theory in practice. In a reengineering process also occur some problems caused by the type of projects, by process maturity, but also by the composition of human resources involved in the project. Parts of this work are crisis plans too - proposals for solving these crisis situations. I believe that the progress of the project is also affected by the level of stress put on the human resources, which is found in the survey that is part of this work. The survey compares whether the effects of stress changes team roles of specific project participants, including the composition of the project team. The research results are the main contribution of this work. The basis of the research is the definition of the team roles by Belbin. The main part sof this work are the basic terms and current level of examination of this area, it also contains examples of real projects, research and crisis plans.
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Nováková, Iva. „Analýza a optimalizace tepelného chování budov“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409871.
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The diploma thesis with research of efficiency of renewable and low-potential energy sources of buildings. It is available on numerical simulations for sharing office and heating and cooling system buildings in DesignBuilder. There are various energy sources and ways of controlling heating and cooling. The results are evaluated in terms of time, after the expected compromises in the building, in terms of energy consumption and its price.
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Bauer, David. „Využití tensegritních struktur pro modelování mechanického chování hladkých svalových buněk“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229836.
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The master’s thesis deals with the computational modelling of the mechanical testing of isolated smooth muscle cells. The main aims are to create computational model of a cell, to simulate single-axis tensile test and to modify the model so that the model reflects real mechanical response. The model of the cell includes cytoplasm, nucleus, cell membrane and cytoskeleton which is modelled as a tensegrite structure. On this model the tensile test was simulated in case of the cell with cytoskeleton and the cell with distributed the cytoskeleton. Force-elongation curves, which were obtained from this simulation, were compared with experimental data which were taken from literature. Tensile properties were measured on freshly isolated cells from rat thoracic aorta, cultured cells, and cells treated with cytochalasin D to disrupt their actin filaments. It was found that the cytoskeleton influence on the cell load in computational model was smaller than in the real cell. Therefore the model was modified by changing material propreties and geometry so that the model of the cell corresponded with the different types of experimentally measured cells.
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Teplá, Zuzana. „Vliv značky Mary Kay na kupní chování zákazníků“. Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-204008.
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The diploma thesis deals with the analysis of the influence of Mary Kay brand on purchase behavior of customers B2C markets thanks to the model customer-based brand equity and the model ColourMind using colour-word association method CWAT. Its aim is to evaluate perception of the brand and factors influencing behavior of customers. Theoretical part is focused on B2C markets, brand politics, customers and their attitude to shopping. Practical part deals with identification of Mary Kay company, analysis of determinants and evaluation of their influence on purchase behavior of customers.
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Halama, Lukáš. „Studium chování nenewtonských kapalin ve slit-flow reometru za podmínek nestabilního toku“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-399291.
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The thesis deals with the description of the unstable flow of non-Newtonian fluid in a slit-flow rheometer, which negatively affects its behaviour. The initiators of unstable fluid flow are the roughness of the rheometer slit walls, the slip on the rheometer walls, and the influence of the inlet and outlet region geometry of the rheometer slit. The work contains methodical procedures for mathematical consideration of individual unstable fluid flow initiators and design of change of slit geometry of slit-flow rheometer. Part of the work is also a comparison of the most commonly used rheological models, derivation of general relations for the creation of the velocity profile of individual rheological models and their subsequent implementation in the rheological application, which significantly simplifies the process of evaluation of measured data when measured on slit-flow rheometer. This application can be used to determine basic parameters in CFD simulations or as a teaching aid.
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Řehová, Jana. „Analýza dynamického chování štíhlé mostní konstrukce a návrh zařízení na omezení vibrací“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409744.
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This master thesis deals with the dynamic analysis of a footbridge. Computational model of the footbridge was created using ANSYS software. The model was subjected to dynamic wind load in longitudal and lateral direction. Furthermore pedestrian load in lateral direction was analyzed. Afterwards, due to unsatisfactory response to the pedestrian laod, a tuned mass damper was introduced to reduce the vibration. This lead to decrease in the vibration to a satisfactory levels, as is shown in the analyses of the model.
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Pavláček, Jan. „Analýza dynamického chování zátěže z měření statorových proudů asynchronního motoru“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220591.
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This thesis focuses on the analysis of the dynamic behavior of the load from the measurement of stator currents of induction motor. Work is sorted from basic engine failures equations, mathematical models, types of signal processing, simulation and measurement. The practical part deals with the design of the motor model in Matlab Simulink, the simulated and the measurement of the pump BETA 12 YC On the Department of Fluid Engineering Victor Kaplan. Use appropriate types of signal processing evaluate the results. The aim of this work is to analyze the dynamic changes of the load.
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Bezchleba, Josef. „Pokročilé modelování chování protokolu SNMP v simulačním prostředí OPNET Modeler“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217562.
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The aim of my diploma is to introduce the SNMP protocol designed for remote device management to the readers and present its implementation into the Opnet Modeler simulation environment. For the implementation the DiffServMIB database has been chosen, which describes the components of differentiated services mechanism. My diploma thesis describes in detail the possibilities of application of the DiffServMIB database in traffic management. The design of a simulation model, which represents the differentiated data processing in input and output direction on a router interface, is also introduced. Next, this model is implemented into the Opnet Modeler simulation environment. The goal of this simulation model is the possibility of simple configuration of individual MIB attributes. In my work I also suggest an implementation method able to interconnect the MIB database with the configuration process of the active network element - with focus on output procedures of DiffServ mechanism.
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Hanzlík, Tomáš. „Analýza dynamického chování štíhlých konstrukcí a návrh zařízení na omezení vibrací“. Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-392278.
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Thesis deals with the modeling of pedestrian excitation of structures and obtaining the corresponding dynamic response of the structure. The trend of modern slender structures places more emphasis on the accuracy of modeling pedestrian dynamic excitation, which is difficult because of the intelligent behavior of pedestrians and the biological nature of the modeled pedestrian. First part of the thesis deals with traditional models of pedestrian excitation, based on application of pedestrian ground force to the model of construction. Models are explored on a model of slender footbridge for many different excitation variants in order to explore the specifics of the force excitation application and the structure response calculation. In second part of the thesis biomechanical pedestrian models are developed, including inertial forces, to calculate the pedestrian interaction with the structure. Parametric studies carried out on simplified structural models research the influence of design parameters of biomechanical models on dynamic response. The aim is to obtain a more accurate model of the pedestrian-construction system for refinement of the design of structures. The design of a tuned mass dampers for the reduction of pedestrian induced vibrations is also explored. Tuned mass dampers are devoted to parametric studies that deal with the influence of design parameters of the damper on the efficiency and design requirements of the device. The aim is to explore the design parameters and their influence on the efficient and economical design of the device. In the thesis were developed two biomechanical models, a simple biomechanical model with one vertical degree of freedom and a bipedal model of a human walking. Models have proven a certain degree of interaction when exciting light footbridges by one pedestrian. Bipedal model then also brought a partial insight into the mechanics of walking and the causes of pedestrian contact forces.
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Krajčovič, Ján. „Zpětná analýza sypané přehradní hráze a predikce jejího chování při mimořádných zatěžovacích stavech“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-391964.
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Diplomová práce představuje vytvoření softwarového 2D MKP modelu přehrady Slezská Harta v České Republice za pomoci softwaru PLAXIS 2D. V úvodu práce je analýza vodní nádrže, vytvořené jako zásobárna vody a protipovodňové dílo. Analýza sleduje geomorfologii, geologii, konstrukci tělesa hráze, použité materiály a metody, a stávající monitorovací zařízení. Pro pochopení tvorby 2D MKP modelu jsou předloženy a definované metody použitých analýz - metoda konečných prvků, analýza prosakování, materiálové modely, citlivostná analýza. Následně byla definována tvorba struktury modelu - určení posloupnosti použitých analýz, definování vstupních dat a mezních podmínek a tvorba kalibračního segmentu. V závěrečné části práce je analýza dosažených výstupů rozsáhlého testování modelu, jejich korelace s reálnými naměřenými hodnotami a celkové shrnutí přínosu vytvořeného modelu pro jeho využití při předpovídání chování přehrady v extrémních případech.
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Medla, Eduard. „Model autonomní kvadroptéry“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-377872.
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Šťastný, Jakub. „Analýza determinant spotřeby vybraných zemědělských výrobků“. Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-259429.
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This thesis deals with the econometric modelling of selected factors affecting the consumption of wheat bakery products in the Czech Republic and Austria between 1995 and 2014. There is a gluten problematic mentioned in the theoretical part and its impact on human organism, followed by an explanation of the consumer s behaviour and his reaction to the development of the price of the goods and his income. The thesis itself is divided into two parts. In the first part there are the time series analyses which are then investigated for their suitability for the subsequent modelling. The second part focuses on the construction of a single-equation model of the wheat bakery products consumption using an econometrical model. Finally there is a quantification of the impact of the individual factors on the wheat bakery products consumption in these two countries based on the coefficients of elasticity.
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Jevická, Barbora. „Autonomní RC model lodi“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-416641.
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This Master’s thesis deals with working on development kit, which is used for RC ship model. The basis are programmable Nucleo STM32 microcontrollers, to which other used modules are connected. The goal is to test each component and create system for navigation of the ship and wireless communication between controller and ship. GPS module and compass are used to navigate and determine the direction of the ship. Controller and ship can communicate through bidirectional wireless modules with antenna. The RC ship model can be switched between manual and autonomous modes. The main result of this thesis is autonomous movement of the ship on to a predetermined GPS coordinates and parallel communication with the user.
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Prokop, Vladimír. „Ekonomika sdílení dopravních prostředků (car sharing)“. Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-259908.
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This thesis examines the issue of sharing of transport, namely the form car-sharing. Work defines the basic concepts of car-sharing, it advocates the concept of economic relations in line with the sustainable development of transport and describes the situation of car-sharing in the Czech Republic. The work also in the application part use the survey and looks to the usability of the cooperative model of car-sharing among students and younger workers in the Czech environment, and then compares this model with other modes of transport, from an economic perspective.
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Hejkal, Filip. „Micro-economic Models and their Validity - comparison of the models with the real situation“. Master's thesis, Vysoká škola ekonomická v Praze, 2007. http://www.nusl.cz/ntk/nusl-10175.
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Kobzová, Hana. „Prognóza dopravního chování obyvatel“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409813.
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This diploma thesis focuses on the development of modal split, as a fundamental indicator determining travel behavior for traffic model forecasting. Firstly, approaches to traffic forecasting in the Czech Republic are described, and an emphasis is put on non-uniform definitions and factors influencing modal split. The body of the thesis describes methods of establishing, as well as the development and objective of the modal split in Brno, Zurich, Dresden, Nurnberg, and Vienna. For each city, the effects of traffic network changes on modal split and travel behavior are evaluated. Finally, the observed trends are compared with each other.
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Kopřiva, Josef. „Nelineární analýza železobetonových konstrukcí“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226460.
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Šimunský, Martin. „Vliv barevných modelů na chování konvolučních neuronových sítí“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-416630.
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Current knowledge about impact of colour models on performance of convolutional neural network is investigated in the first part of this thesis. The experiment based on obtained knowledge is conducted in the second part. Six colour models HSV, CIE 1931 XYZ, CIE 1976 L*a*b*, YIQ a YCbCr and deep convolutional neural network ResNet-101 are used. RGB colour model achieved the highest classification accuracy, whereas HSV color model has the lowest accuracy in this experiment.
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Donát, Martin. „Analýza mechanického chování synchronního generátoru“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229042.
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This Master’s thesis deals with analysis of mechanical behaviour of the synchronous generator and assessment of the possibility of reducing the mass of the frame of the generator. The aims of this work were: to perform the stress-strain analysis and modal analysis of the required model of the synchronous generator, to assessment influence of single part of the frame of the generator over its stiffness and design construction modification of the frame of the generator, which reduce its mass.
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Kejík, Vít. „Predikce chování stříkaného betonu s využitím elastoplastického materiálového modelu“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409748.
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This work is focused on the application of advanced elasto-plastic material model intended for shotcrete. Spatial mathematical models of two laboratory tests are created, where this model is used. The first test is a three-point bending concrete specimen. Next, the behavior of the material is analyzed, in which input parameters are entered. Consequently, two reverse analyzes of the available data are analyzed where a match between prediction and measurement can be obtained. The second test is a modified tensile test, where is describe the material behavior in changing of input parameters. Subsequently, reverse data analysis is created, where an acceptable match between prediction and measurement is possible. In every study, the stress waveform in the fracture process zone is analyzed to more detail.
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Čásar, Ondřej. „Výpočet chování paliva reaktorů VVER programem FEMAXI-6“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400560.
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The submitted master thesis deals with finding the right combination of models describing the cladding behavior implemented in the FEMAXI-6 computational code and then comparing it with the benchmark Zaporoshye, Novovoronezh and the modified FERMAXI 6 program with implemented models describing the E110 behavior used for VVER-type reactor fuel rods. Initially, there is a description of the FEMAXI-6 nuclear fuel analysis program including its structure, calculation mechanics and input file description. Furthermore, the work presents the benchmarks used to evaluate individual combinations of fuel models. An important part is the description of the PIE measurement, including measurement uncertainty, which can affect the results of the work. The next chapter contains a description of what affects fuel behavior during irradiation, which can be mathematically expressed and modeled. The following chapter describes the material equations defining the E110 alloy used as cladding of the fuel rods and which were subsequently implemented into the FEMAXI-6 computing program. The last chapter is devoted to the description of the results with appropriate comments.
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Kšica, Filip. „Modelování dynamických vlastností a chování technických soustav“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241945.
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The aim of this diploma thesis is to evaluate the potential of available methods for simplification and reduction of complex models of technical systems and their integration with experimental models. Finding methods, which would allow us to create models and run simulations in shorter periods of time, is key in design process of modern technical systems. In the beginning of this thesis, a theory necessary for understanding and application of presented methods is given. These methods can be separated into two groups, first as experiment related, second as simulation related. The first group contains methods for experimental evaluation of response and its use for dynamic system identification. The second group contains methods of finite element model creation, with the usage of standard structural elements as well as Component Mode Synthesis substructures, and these models are in the following step reduced into state space models. In the next step, all presented methods are applied on simple experimental structure. In conclusion, the results of simulations are the subject for comparison not only from quantitative point of view, but also, for the purpose of practical application, in terms of time, feasibility, versatility and accuracy. The system identification method along with state space method proved to be very suitable. The results presented in this thesis might help, by selecting the appropriate method, in simpler evaluation of dynamic properties of technical structures.
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Recman, Lukáš. „Deformační chování nano/mikro vyztuženého PMMA“. Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-233297.
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Práce sleduje vliv velikosti částic na elastický modul a deformační chování za mezí kluzu. Bylo pozorováno, že jak elastická oblast, tak oblast za mezí kluzu ukazuje silnou závislost chování na velikosti částic. Cílem této práce je korelovat experimentální data a teoretické předpoklady které bylo odvozeny pro deformační chování v elastické oblasti a v oblasti za mezí kluzu pro amorfní polymery a konkrétně pro PMMA. Vše je motivováno propojit zatím oddělené oblasti kontinuální mikromechaniky a diskrétní nanomechaniky. Deformační chovaní PMMA plněného nano a mikro plnivem bylo pozorováno v elastické a plastické oblasti. Byl zkoumán vliv velikosti částic na velikost modulu a deformačního zpevnění. Mechanizmus vyztužení je interpretován s použitím teorie imobilizace řetězců, nanočástice mají silný vliv na molekulární dynamiku a kinetiku zapletenin. Mým příspěvkem k tomuto tématu je ukázat výraznou závislost na mechanizmu vyztužení v závislosti na velikosti částic. A to jak pod teplotou skelného přechodu tak nad teplotou skelného přechodu. Ačkoli pro velikost modulu byla publikována značná množství dat, která byla následně i interpretována, vliv částic na deformační zpevnění je poskrovnu. Během elastické deformace je primární struktura materiálu neměnná, jedná se o elastickou deformaci, za mezí kluzu již toto neplatí a primární struktura je zde nevratně poškozena. Bylo ukázáno, že obsah nano částic vede ke zvýšení meze kluzu a vyššímu deformačnímu zpevnění. Tento nárůst deformačního zpevnění je v korelaci s Guth-Gold rovnicí. Je předpokládáno, že nanočástice slouží jako další fyzikální zapleteniny a vedou k fyzikálně více zapletenému systému. Stejný efekt jako v elastické oblast tj. vliv velikosti částic na modul, byla pozorována i během deformačního zpevnění.
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Hanuš, Petr. „Experimentální ověření vlivu typu vláken na chování vláknobetonů“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392039.
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This diploma thesis deals with the comparison of different properties of fibre-reinforced concrete according to the type of fibres. The main monitored property is flexural strength, tested on prisms with a cross section of 150x150 mm and a length of 600 mm. Four concretes of natural aggregate and four concrete of lightweight aggregate were prepared for the experiment. There were 2 reference concrete and 6 fibre-reinforced concrete. Three types of fibres were used: steel, polypropylene and glass. More than 2500 kg of concrete was produced. The aim of the thesis is to assess the influence of fibres on the flexural strength and other characteristics of fibre-reinforced concrete.
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Buchta, Jan. „Optimalizace chlazení RD využívajícího zemní vrty“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227800.
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The master’s thesis deals with optimization of cooling system of family house using borehole heat exchanger as a single cooling source. In the experimental part of the thesis was carried out long-term mearurements. The main part of the master’s thesis is the development and verification mathematical and physical model of thermal behavior chilled room. The result are computer simulations and evaluation of individual scenarios and design requirements for a potential optimization of measurement and control system. The theoretical part generally deals with radiant cooling systems.
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Vaněk, Mojmír. „Vývoj modelů chování Al slitin pro aplikace v numerických simulacích svařování a tepelného zpracování“. Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-364598.
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The thesis deals with methodology for computational approaches for numerical simulations of welding and heat treatment of aluminium alloys. The thesis describes improvement of the current methodology for metallurgical part of the numerical analysis of welding, which is important mainly for prediction of dimensions of the heat affected zone (and deformations). The improvement was carried out based on CHD diagram that describes precipitation and dissolution of phases during continuous heating. The thesis also describes carried material measurements (measurement of chemical composition, dilatometric tests, tensile tests of several conditions of materials at temperatures up to 500 °C and measurement of aging curves), which allowed to significantly refine analysis results for the alloys EN AW-5083 and EN AW-6082. Based on an evaluation of the measurements, several conclusions were made. They can be useful for creation of material databases of other aluminium alloys. The thesis also describes quantification of dependence between tensile strength and yield strength on the Vickers hardness for different conditions of EN AW-6082. There is also methodology for numerical simulation of the heat treatment process of heat treatable Al alloys in the dissertation. The methodology is completely new approach which has never been published so far. Application of this method is based on user changes of the material database in software Sysweld after relatively easy measurement of aging curves. Therefore, the methodology can be considered as promising for application in industrial practice.
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Fedorková, Lucie. „Metody stabilizace nestabilních řešení diskrétní logistické rovnice“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400443.
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Diplomová práce pojednává o stabilizaci diskrétního logistického modelu pomocí několika řídících metod. Je zde provedena především stabilizace rovnováh, 2-periodických cyklů a 3-periodických cyklů. Ke stabilizaci systému je využito proporčního zpětně-vazebního řízení, zpětně-vazebního řízení s časovým zpožděním a řízení založeného na predikci. U každé metody je diskutovaná stabilizační množina pro řídící zesilovač spolu s oblastmi stability pro odpovídající kontrolovaná řešení. Všechny teoretické výsledky jsou ilustrovány grafickými interpretacemi v softwaru MATLAB. Podpůrné výpočty jsou provedeny pomocí softwaru Maple.
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Švéda, Pavel. „Simulátor dopravy na pozemních komunikacích“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237189.
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This Master's Thesis deals with the possibilities for the practical usage of traffic simulations as tools for seeking solutions to various kinds of problems such as road traffic flow, the environmental impact of traffic, etc. It contains a description of the basic terms in the area of traffic simulation models, advantages of their practical usage, and furthermore, it describes the basic general methods of and attitudes to the most commonly used traffic simulations. In the second part, the analysis and the design of an original micro traffic simulator are included. Finally, the traffic simulator is implemented and tested on a real traffic situation.
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Šotner, Roman. „Studium elektronického řízení a reálného chování variabilních filtračních a oscilačních aplikací moderních aktivních prvků“. Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-233574.
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The thesis deals with electronically adjustable and configurable applications of the modern active elements. In the field there were presented various active elements in applications of the analog filters and oscillators which stem from basic and more or less similar principles of circuit synthesis and design. However, there is not provided study of real behavior in detail and in most cases electronic control of the various parameters in application is not verified. In the precise design of application is very important to identify problematic features and determine how much it influences functionality of the device. In this work several filtering structures based on common and modified synthesis principles (integrator loops) are compared in the view of multifunctionality, configurability, variability, kind of used electronic control and impact of influences of real elements on behavior. There are used standard methods like adjusting of variable transconductance, intrinsic value of current input resistance and not so common method based on variable current gain in design of modified and improved multifunctional filtering circuits. The last method of mentioned control enabled to find quite unique filter which allows continuous electronic change of transfer from band-reject to all-pass filter of the 2nd order without reconnection. It is much simpler than previous and more common integrator loops. Larger part of this work is focused on electronically controllable oscillators mainly on quadrature types. There is presented several very simply and elementary realizations which require minimal number of active and passive elements. There are also slightly or more complicated solutions which remove some drawbacks of mentioned simpler variants. First of all there is given attention on study of real behavior which make obvious different problems with mutual dependence of oscillation condition and oscillation frequency, dependence of produced amplitudes (quadrature types) on parameter which is controlling oscillation frequency, influence of this parameter on oscillation condition, etc. In the framework of this part of the thesis there was introduced a novel modification of current conveyor transconductance amplifier (CCTA) so called current-gain-controlled current conveyor transconductance amplifier (CGCCCTA). Requirements for novel applications in the field of oscillators for newly developed controllable current amplifier and digitally controllable current amplifier (DACA) at the Department of Telecommunication FEEC BUT lead to creation of several chapters of this work where mentioned active elements can be used. The important contribution of this work (for practical approach) is also experimental testing of most of designed circuits and determination of exact design equations and rules which take into account real behavior of circuits and confirm results obtained from experiments.
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Kacina, Michal. „Možnosti stanovení ceny IT zboží“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237122.
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The thesis contains the theoretical basis for study of possibilities of pricing information goods. The source areas are microeconomics, marketing, competitive advantage and economics of information goods. The model of market is created with constraints defined on the ground of theoretical basis. The thesis analyzes requirements that define the system that supports the choice of pricing strategy. It includes detailed design of the prototype of such system. The prototype is designed with robustness because of the future improvements. The design describes the prototype's input parameters and their transformation into useful outputs that cover basic characteristics of information goods. The designed prototype is implemented. The thesis includes demonstration of the prototype and possible directions for improvements that lead to validity of proposed model of market.
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Varvařovský, Václav. „Modelování přírodních katastrof v pojišťovnictví“. Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-77410.
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Quantification of risks is one of the pillars of the contemporary insurance industry. Natural catastrophes and their modelling represents one of the most important areas of non-life insurance in the Czech Republic. One of the key inputs of catastrophe models is a spatial dependence structure in the portfolio of an insurance company. Copulas represents a more general view on dependence structures and broaden the classical approach, which is implicitly using the dependence structure of a multivariate normal distribution. The goal of this work, with respect to absence of comprehensive monographs in the Czech Republic, is to provide a theoretical basis for use of copulas. It focuses on general properties of copulas and specifics of two most commonly used families of copulas -- Archimedean and elliptical. The other goal is to quantify difference between the given copula and the classical approach, which uses dependency structure of a multivariate normal distribution, in modelled flood losses in the Czech Republic. Results are largely dependent on scale of losses in individual areas. If the areas have approximately a "tower" structure (i.e., one area significantly outweighs others), the effect of a change in the dependency structure compared to the classical approach is between 5-10% (up and down depending on a copula) at 99.5 percentile of original losses (a return period of once in 200 years). In case that all areas are approximately similarly distributed the difference, owing to the dependency structure, can be up to 30%, which means rather an important difference when buying the most common form of reinsurance -- an excess of loss treaty. The classical approach has an indisputable advantage in its simplicity with which data can be generated. In spite of having a simple form, it is not so simple to generate Archimedean copulas for a growing number of dimensions. For a higher number of dimensions the complexity of data generation greatly increases. For above mentioned reasons it is worth considering whether conditions of 2 similarly distributed variables and not too high dimensionality are fulfilled, before general forms of dependence are applied.
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Kuchařík, David. „Systém pro zabezpečení a střežení objektů a prostor“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2008. http://www.nusl.cz/ntk/nusl-235876.
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This project deals with given safeguard possibilities, both mechanical and electronic. A row house with garden was chosen for being secured. Subsequently, were elaborated two`s proposals of securing and guarding of this object. First, was based on camera`s system and second on common system ESS. Later on they were evaluated and the most considerable benefits were emphasized. A system based on control panel with connected detectors was selected upon specification. Subsequently was created a model of the chosen system, at which the required behaviour was simulated and verified. An outline of an implementation was created in the C language.
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Nikolaev, Alexander. „Modely chování úrokových sazeb“. Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-324633.
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This diploma thesis deals with short-term interest rate models. Many interest models have been developed in the last decades. They focus on accuracy of prediction. The pioneering one was developed by Vasicek in 1977 followed by the work of others. Nowadays these vary in their level of comprehensiveness and technical difficulty. The main aim of the thesis is to introduce not only a basic Vasicek's work but also more sophisticated models such as Brennan-Schwartz or Longstaff-Schwartz.
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Bednář, Hynek. „Podobnosti chaotického chování Lorenzova 05 modelu a modelů ECMWF“. Doctoral thesis, 2019. http://www.nusl.cz/ntk/nusl-405748.
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This thesis tests the ability of the Lorenz's (2005) chaotic model to simulate predictability curve of the ECMWF model calculated from data over the 1986 to 2011 period and demonstrates similarity of the predictability curves for the Lorenz's model with N = 90 variables. This thesis also tests approximations of predictability curves and their differentials, aiming to correct the ECMWF model estimated parameters and thus allow for estimation of the largest Lyapunov exponent, model error and limit value of the predictability curve. The correction is based on comparing the parameters estimated for the Lorenz's and ECMWF and on comparison with the largest Lyapunov exponent (λ=0,35 day-1 ) and limit value of the predictability curve (E∞=8,2) of the Lorenz's model. Parameters are calculated from approximations made by the Quadratic hypothesis with and without model error, as well as by Logarithmic and General hypotheses and by hyperbolic tangent employing corrections with and without model error. Average value of the largest Lyapunov exponent is estimated to be λ=0,37 day-1 for the ECMWF model, limit values of the predictability curves are estimated with lower theoretically derived values and new approach of calculation of model error based on comparison of models is presented.
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Kuthan, Martin. „Kvasinkové kolonie jako model mnohobuněčného chování mikroorganizmů“. Doctoral thesis, 2007. http://www.nusl.cz/ntk/nusl-374894.
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- 32 - Závěr Již v úvodu jsem se zmínil, že mnohé laboratorní kmeny kvasinek ztratili vlivem domestikace schopnost filamentálního růstu. Ukázkovým příkladem cílené domestikace je laboratorní kmen S288C. Historie vzniku tohoto kmene je zajímavá a dokumentuje výrazný vliv genetiků na jeho vlastnosti. Velké množství kmenů S. cerevisiae používaných v laboratořích má společného předka kterým je kmen EM93. Tento diploidní kmen izoloval v Kalifornii v roce 1938 Emil Mrak z hnijícího fíku (MORTIMER and JOHNSTON 1986). Není však jasné, zda se jednalo o přirozenou mikroflóru fíků, nebo o kontaminaci komerčními pekařskými či kvasnými kmeny. Kmen EM93 je heterothalický a je schopen filamentálního růstu (LIU et al. 1996). Pro laboratorní účely ale nebyl úplně ʺpohodlnýʺ. Protože tvorba shluků buněk brání izolaci klonů vzniklých z jediné buňky a ztěžuje přesné určení počtu buněk v tekutých kulturách, snažili se genetici získat prototrofní kmen s neadherujícími, dobře resuspendovatelnými buňkami. Mnohonásobným křížením haploidních segregantů kmene EM93 s dalšími laboratorními kmeny a komerčními pekařskými kmeny vytvořil Robert Mortimer kmen S288C, jehož 90 % genomu pochází...
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Matějovská, Anna. „Opravné položky - procyklické chování bank“. Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-322452.
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In relation to the latest economic crisis much attention was paid to the bank capital requirements. Many papers discuss the pro-cyclical effect of these capital requirements and the options of how to stabilize the banking industry and financial system. In this thesis I researched another instrument which can cause the pro-cyclical effect - the loan loss provisions. In reaction to this issue the Spanish central bank has adopted the model of dynamic provisioning which acts counter-cyclically. This model is supposed to balance the amount of created provisions and banks' profit over the time. In this thesis I introduce a hypothetical situation in which the countries using the Euro currency adopted the model of dynamic provisioning and I examine the hypothesis that the adoption of this model would mitigate the latest economic crisis as the banks would achieve higher profits during the time of recession. Based on the conducted research I confirmed my hypothesis and conclude that the dynamic provisioning would balance the economic swings. However, the results also showed that the set-up of dynamic provisions model is crucial. In order to make the model efficient the model coefficients have to be precisely determined by central banks or individual banks and approved by independent supervisors. Keywords...
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Vackeová, Veronika. „Aplikované řízení rizik ve společnosti. Model evakuačního chování“. Master's thesis, 2009. http://www.nusl.cz/ntk/nusl-275444.
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Filozofická fakulta Univerzity Karlovy nám. Jana Palacha 2, 116 38 Praha 1 IČ: 00216208 DIČ: CZ00216208 Tel.: (+420) 221 619 111 http://www.ff.cuni.cz Tento záznam v digitalizované podobě z technických důvodů bohužel není k dispozici. Děkujeme za pochopení.
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Suchá, Anita. „Koaliční chování a vládní model první československé republiky (1918-1938)“. Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-325037.
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This thesis analyzes the First Czechoslovak Republic (1918-1938) in terms of coalition behavior. It describes all aspects related to this phenomenon using the analytic and descriptive method. The work starts with the introduction to the coalition theory, including the typology of coalition governments and other theoretical aspects related to the coalition formation. Defining coalition factors in the First Republic are analyzed together with the description of the historical context, while stressing the national issues that largely affected creation of governments. The relation between the legislative and the executive power, the electoral system and the party system with the list of relevant parties are presented as other key factors related directly or indirectly to the coalition behavior. Political parties had decisive influence, that's why the group of their leaders called "The Five" was able to fade the importance of the parliament and the government during a certain period. On the other hand, there was also a great popularity and authority of T. G. Masaryk, the first Czechoslovak president. The main part of this thesis deals with the actual coalition behavior in years 1918-1938 and analyzes coalition formulas. The work describes the governments during the First Republic, their specifics, stability, and...
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Bednařík, Lukáš. „Studium analytického chování rozptylových veličin v nelokálním rezonančním modelu“. Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-325506.
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In the presented thesis we study analytical behavior of vibrational excitation cross sections and probability flux density in nonlocal resonance model. An analytical formula for determining the shape of Wigner cusps from three complex parameters is derived. The results of this formula are compared to numerical calculations with complex scaling method and interpreted within Feynman approach to quantum mechanics. Furthermore, we derive nonlocal continuity equation and show how it implies the multichannel optical theorem. Detail analysis of fluxes in the nonlocal resonance model is used to accelerate the convergence of formula for the dissociative attachment cross section and we present a simple model describing boomerang oscillations. A program in Fortran language is attached to this work. The program allows calculation of vibrational excitation and dissociative attachment cross sections, flux divergences and other quantities specified in this text.
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VÍTKOVÁ, Nikola. „Nákupní chování a postoje zákazníků maloobchodní jednotky“. Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-153626.
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The theoretical section attempts to explain shoppers? behaviour in defining the terms of consuming and buying. The marketing research focused on customers planning of purchases or factors affecting the purchases without a plan and attempted to look at different groups of customers.