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Application of pedestrian evacuation and fire spreading models for specific buildings safety improvement
Okřinová, Petra ; Hromada, Martin (referee) ; Dvořák, Zdeněk (referee) ; Apeltauer, Tomáš (advisor)
The current trend in the construction industry is construction “without limits”. In projects and implementations, we encounter non-traditional combinations of operational solutions, geometry and materials, which are still approached mainly using the classic standards from the fire safety point of view. The latter does not allow to comprehensively cover all aspects of these specific buildings without a greater degree of subjective simplification. This raises the question of whether, even in these cases, it is still appropriate and safe to use only a standards approach, or whether buildings deviating from traditional construction should be assessed differently – for example, by so-called fire analysis using numerical models. Currently, users still have very little information about the use of these models, and even in the Czech legislation, there is no document recommending how to proceed when using them for the purposes of building fire safety solutions. Numerical models of evacuation and fire analysis are thus currently the most effective tool for impact analysis and preliminary verification of the effectiveness of proposed safety measures. Therefore, it is necessary to deal with their validation and use, with the goal of innovating existing approaches and standardizing numerical models for fire safety assessment of buildings. Furthermore, it is necessary to compare their possibilities and limitations concerning ČSN and to put together a comprehensive information background as a basis for their more active implementation in practice. The presented work thus focuses on the above-mentioned issue and demonstrates its use of application examples of real specific buildings and a set of compiled studies. The work also points out specific shortcomings and simplifications of standard approach methods, based on which verified procedures and recommendations for the incorporation and use of numerical models in fire safety practice are then established.
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On a class of biped underactuated robot models with upper body: Sensitivity analysis of the walking performance
Papáček, Štěpán ; Polach, P. ; Prokýšek, R. ; Anderle, Milan
Biped underactuated robots with an upper body (being a torso) form a subclass of legged robots. This study deals with the walking performance of such class of legged robot models and has been motivated by the need to implement of the previously developed sensor and control algorithms for the real-time movement of the laboratory walking robot, designed and built at the Department of Control Theory of the Institute of Information Theory and Automation (UTIA) of the Czech Academy of Sciences, see Fig. 1 (left). A detailed description of this underactuated walking-like mechanical system (called further UTIA Walking Robot – UWR) is provided in [2] and [5]. The simplest underactuated walking robot hypothetically able to walk is the so-called Compass gait biped walker, alternatively called the Acrobot, see Fig. 1 (right). For a review of underactuated mechanical systems, i.e. systems with fewer actuators than degrees of freedom, which encounter many applications in different fields (e.g., in robotics, in aeronautical and spatial systems, in marine and underwater systems, and in-flexible and mobile systems), see [3]. As follows, we examine the walking performance of parametrized models for different walking regimes and different values of model parameters. More specifically, the sensitivity analysis (i.e., parameter study) of the walking performance with respect to certain design variables (model parameters) is carried out using the software package alaska/MultibodyDynamics. The main attention is attracted to the role of the upper body mass m3 and position lc3, see Fig. 1 (right). Last but not least, having surveyed the mechanics of planar biped robots, our subsequent goal is the analysis of a 3D biped model where lateral balance is either controlled, suppressed or compensated.
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Comparing of observed and simulated field crop production in HERMES2Go model at Hněvčeves locality
Bohuslav, Jakub ; Kersebaum, Kurt Christian ; Madaras, M. ; Hlavinka, Petr ; Trnka, Miroslav ; Žalud, Zdeněk
The main objective of this study was calibration and testing of crop growth model \nHERMES2Go under long–term field experiment in Hněvčeves locality (coordinate 50°18´N, 15°43´E, \naltitude 265 m.a.s.l.). Observed data of yields and the other parameters like a weather data, soil \nparameters, management practice, phenology phases etc. monitored in last 38 years was used for model \ncalibration. Input parameters were available for 4 different fertilizer practices: i) control, ii) manure, iii) \nmineral fertilizer and iv) manure together with mineral fertilizer on each plot. Observed data are \navailable for yields of main and by–product and above ground biomass. The main grown crops were \nsugar beet, spring barley, winter wheat, silage maize, oat and alfalfa. Outputs of the model for main \nproduct are relatively accurate, but values of by–product requires additional calibration parameters \nsettings together with above–ground biomass.
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Optimization of supporting cryptographic operations using hardware
Čurilla, Jakub ; Smékal, David (referee) ; Cíbik, Peter (advisor)
This work deals with the description of FPGA architecture circuits, their structure, VHDL language, FPGA design flow, cryptography and cryptographic algorithms, and subsequent implementation and realization of support functions for cryptographic operations in VHDL language, their time and performance analysis, and mutual comparison.
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On the kinematics of wheeled mobile robots
Zoufalý, Stanislav ; Hrabec, Jakub (referee) ; Burian, František (advisor)
The bachelor thesis deals with the description of the concepts of nonholonomic mobile robots. Its aim is to get acquainted with the basic variants of structures, to build a mathematical model, to derive dynamic properties and to design a functional algorithm of a control system. The work describes the selection of suitable models, the implementation of two basic types of chassis and the selection of a suitable simulator for the implementation of models. These are types with Differential and Ackerman chassis. The thesis next describes the design of suitable control so as to meet the requirement of tracking the desired trajectory. Control algorithms and mathematical models were implemented in the MATLAB-Simulink software environment with the possibility of real 3D simulation in the Webots simulator.
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Graphical Editor for Design Models
Švub, Daniel ; Janoušek, Vladimír (referee) ; Kočí, Radek (advisor)
The target of this thesis was a design and a development of an user friendly graphical editor of Object oriented Petri nets (OOPN). For description of this formalism was used PNtalk language, which combines Petri nets with the object oriented language Smalltalk. The resulting application should allow users to design object and their behaviour via OOPN and simulate directly in the editor.
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Simulation-Based Development of Heating Control System
Tomeček, Jan ; Rozman, Jaroslav (referee) ; Janoušek, Vladimír (advisor)
This thesis is about optimalization of boiler heating from external sources. I have created a simulation model of Heating Control System. Subsequently, using a simulation model, I proposed possible optimizations for water heating control. The used optimization method was deep Q-learning. The result of this work shows the use of simulation for the development and optimalization of control systems.
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Skeletal Animations Library
Maliňák, Jan ; Chlubna, Tomáš (referee) ; Vlnas, Michal (advisor)
Main objective of this thesis is designing a physical based solution to generating skeletal animations. This allows both micro adjustments of animation in realtime and dynamic generation of character's movement without previous preparation of animation for given specific purpose. Created module for Unity game engine uses angular velocity to rotate bones of skeleton, rather than evaluating animation curve for specific time. The calculation is done by generating muscle forces, calculating torque and applying resulting angular acceleration of each bone. After specifying a target in one of its forms, the animating system will start moving with linked skeleton and will try to approach given target.
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Simulation of an ARM Processor for the Education of Programming in Assembler
Ondryáš, Ondřej ; Goldmann, Tomáš (referee) ; Orság, Filip (advisor)
This thesis aims to implement a didactic tool for simulation of an Arm-based processor integrated into the Visual Studio Code editor. The tool facilitates learning about the machine-level programming of these processors. It implements a service that provides an assembler and a simulator for the A32 instruction set. The service is built using the Unicorn emulation framework and other open-source tools. The editor extension uses the service to add support for the development and debugging of programs written in the assembly language. It shows descriptions of used instructions and helps the programmer understand their function. When debugging, it enables stepping through the code and provides various views of the state of the simulated processor, its registers and memory. The solution can be used in the Advanced Assembly Languages course at FIT BUT. It could be further improved in the future to support other architectures and provide an easy learning environment in other courses related to machine-level programming.
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Use of Modelling and Simulation in the Analysis of Operational Risks of Production Lines
Wolker, Jakub ; MSc, Martin Manga, (referee) ; Lacko, Branislav (advisor)
The diploma thesis deals with the use of modeling and simulation in the analysis of operational risks. Proposals for the methodology for creating a digital twin model of new and existing production lines, subsequent verification of the methodology on a specific model and also the use of the model to determine operational risks will be presented. Siemens Tecnomatix Plant Simulation software is used to create the digital twin model and to verify risk scenarios and related experiments. The main goal of this work is to propose a suitable procedure and means that address the issue of planned benefits and risks for production line projects. This is achieved by meeting the sub-objectives that correspond to the individual proposals. The solution is based on theoretical knowledge and analysis of the assembly line, the state of value stream mapping and the data used.
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