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Robotic Arm System for Scale Models Domain
Bruštík, Antonín ; Strnadel, Josef (referee) ; Šimek, Václav (advisor)
This thesis marginally deals with issue of industrial robots, subsequently with the design and construction of own robotic arm. It includes production process in domestic conditions with usage of commonly available components and hobby FDM 3D printer. It is closely dedicated to selection and connection of control electronics, design and consequential implementation of firmware including graphical user interface intended to demonstrate its functionality. In conclusion, it evaluates achieved results and proposes possible improvements.
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Simulation of Spread of Infectious Diseases in Human Population
Křištof, Jiří ; Šimek, Václav (referee) ; Strnadel, Josef (advisor)
The aim of this work is to develop an epidemiological model to simulate the spread of the infectious disease covid-19. The developed SVLIHDRS model builds on compartmental models and is implemented as a Markov chain with continuous time. For the implementation, the UPPAAL tool is used. By comparing the simulation outputs with the observed data, the Spearman coefficients are 0.8940 for infectious individuals and 0.9987 for deceased individuals, the mean bias errors are 12510.7285 and 316.2697, respectively. The results of this thesis are useful for making long-term predictions of the epidemic evolution of covid-19 infection.
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Emulation of Character-Based LCD Display Using E-Ink Technology
Rusín, Tomáš ; Strnadel, Josef (referee) ; Šimek, Václav (advisor)
The aim of this bachelor thesis is to design a simple printed circuit board interconnect. The board is planned to be equipped with a microcontroller that will receive communication signals originally intended for LCD character displays. The communication may be parallel or serial, in the form of SPI and I2C type interfaces. These signals are planned to be received and converted to E-Ink display signals. That display will show information in the same format as it was designed for LCD displays. The E-Ink display replaces LCD displays without the need of changing the original library or the original communication interface. This method of replacement is suitable when a LCD character display is destroyed and a suitable replacement cannot be found, or when the E-Ink display is more suitable.
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Simulation of Spread of Infectious Diseases in Human Population
Vaňo, Michal ; Peringer, Petr (referee) ; Strnadel, Josef (advisor)
Epidémie predstavujú trvalú hrozbu pre život a ekonomiku krajín. Napriek ich ničivému potenciálu, ich dopad je možné zjemniť študovaním chorôb, ktoré tieto epidémie spôsobujúu, a predpoveďou ich dosahu. Modelovanie epidémií je kľúčové pre pochopenie šírenia infekčných chorôb a hodnotenie účinnosti zdravotných zásahov. Táto bakalárska práca najprv predstavuje a porovnáva kompartmentálne a multiagentné modely, dva primárne prístupy v oblasti epidemiologického modelovania. Zvoleným prístupom pre túto prácu je multiagentné modelovanie, ktoré bolo dôkladne analyzované a následne transformované na abstraktný model šírenia chorôb. Model je navrhnutý tak, aby bol spustiteľný na akomkoľvek slovenskom meste a poskytol všestranný nástroj na pochopenie dynamiky chorôb v rôznych lokalitách. Abstraktný model bol implementovaný v Pythone. Záverečná časť práce pozostáva z vykonania experimentov na analýzu rôznych scenárov a rôznych opatrení. Tieto experimenty prispievajú k hlbšiemu pochopeniu dynamiky šírenia chorôb a môžu byť zdrojom informácií pri tvorbe politiky v oblasti verejného zdravia. Práca ponúka prehľadnú štúdiu rôznych prístupov k modelovaniu a vyvíja všestranný model založený na agentoch, ktorý je možné rozšíriť podľa dostupných údajov.
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Digital Audio Steganography
Matuška, Matej ; Bidlo, Michal (referee) ; Strnadel, Josef (advisor)
The subject of this thesis is steganography, i.e the science that deals with hiding information in other objects. In the introduction, steganography in general and also several areas of digital steganography are described. Next, the thesis focuses on digital audio steganography. After an introduction to digital sound and PCM and WAVE formats, several methods from this area, including one new, are described in more detail. Implementation of the new and 4 other selected methods in newly developed extensible tool for steganography and their evaluation are also parts of this thesis. The 3 basic steganography requirements (imperceptibility, robustness, capacity) were evaluated on recordings of music, speech and various sounds.
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Smart Metering Device with Sigfox Interface
Janík, Jakub ; Strnadel, Josef (referee) ; Šimek, Václav (advisor)
The aim of this bachelor thesis is the design and production of a measuring device using a microcontroller from the company NXP. The device sends measured values via the Sigfox IoT network, allows them to be read via Bluetooth Low Energy and monitors its own energy consumption from the battery. Any sensor whose values will be sent can be connected to the device.
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Digital Audio Steganography
Kabelka, Petr ; Malaník, Petr (referee) ; Strnadel, Josef (advisor)
The field of steganography deals with concealing information with the goal of hiding their very existence. The goal of this work is to create a summary of existing digital audio steganography methods and implement some of them. This work presents easily extensible and usable multiplatform library for audio steganography written in the Python programming language and a program that uses it. At the end of this work are the implemented methods compared against each other and against the published methods. Because it is hard to find concrete implementations of various published methods, the presented library enables almost anyone to easily use the implemented steganographic methods and to continue working on research in this field without the need to reimplement all of them.
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Schedulability Analysis of Real-Time Tasks under Uncertainty
Rosecký, Richard ; Bidlo, Michal (referee) ; Strnadel, Josef (advisor)
The goal of this thesis is to design and create a model of a real time system and several task sets for this system, to analyse and verify the created model and sets and to apprise the concept of real time systems and the schedulability of tasks in these systems. The tool UPPAAL will be used to create the model and it will include an abstraction of a task, scheduler and scheduling algorithms. It will be possible to simulate and verify sets of periodic, sporadic, and aperiodic tasks in combination with various scheduling algorithms such as FIFO, DMA, RMA, EDF or Round Robin.
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Self Driving of Car Model in Unknown Environment Using SLAM
Jahn, Filip ; Bidlo, Michal (referee) ; Strnadel, Josef (advisor)
This thesis aims to build a model of a vehicle that will be able to autonomously navigate in the environment while mapping its surroundings. Another goal of the work was to understand embedded systems and their development in more detail, and therefore the programming was deliberately implemented at the hardware level (bare metal) without the use of an operating system or other existing solutions. From the SLAM techniques, a grid-based method was chosen, which uses a grid as the basic spatial representation of the environment. In this method, sensors are used to measure the distance and determine the position of the robot in a given space. This information is then processed and used to create a map of the environment, which the robot uses to orient and move through the space. After traversing a previously unknown path, the robot builds a map of the space and saves it as an excel file on an SD card to make the map easy to read. The contribution of this thesis is the detailed description of each component used. The work was written from the beginning so that the individual modules are independently functional. This created libraries that when inserted into the project will be fully functional.
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Embedded System for Detecting Human Aggression
Hlavienka, Boris ; Malaník, Petr (referee) ; Strnadel, Josef (advisor)
This bachelor thesis focuses on design and implementation of detection system based on aggresion recognition through combinations of physiological changes such as heart rate, voice intensity and skin resistance. The goal is to implement the system on embedded device and test efficency of such system through an experiment. This paper carries out analysis of individual types and expressions of aggresion, on the basis of which they are then chosen methods of its detection. The final product is then tested using an experiment on a group of voulenteers, who were exposed to various stimuli with the aim of inducing aggressive behavior. The findings may be put to use in the field of aggression prevention and safety protection in various environments as well as medicine.
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