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Simulation of dose distribution irradiation
Večeřa, Petr ; Hlaváč, Martin (referee) ; Kolářová, Jana (advisor)
This project deals with the issue of simulation of dose irradiation. This principle is used in a radiotherapeutic device known as a Leksell Gamma Knife for the treatment of intracranial tumours. With regard to the theoretical observations obtained by studying this device, the project suggests the use of analytical geometry for the creation of a mathematical model for calculation of the intensity in the rayed area. A demonstration program Leksell_xvecer08 has been created for this model in a MatLab software background, which enables the user to change various input arguments and simulate a picture of the dosage spread in the target scanned areas.
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User Interface for Web-Based Games
Hlaváč, Martin ; Beran, Vítězslav (referee) ; Hradiš, Michal (advisor)
This thesis describes challenges in designing, developing and testing web user interfaces. It discusses human-computer interaction, communication channels and user interface analogy to the real world. User interfaces can be designed to be optimal for a specific action or to suite the user. A design of interfaces focused on users utilize methods, such as gamification and improving user experience, which can improve interface usability. User interface development is demonstrated on web page development. Further, the thesis describes 3 web user interface testing methods. The methods are demonstrated by designing, developing, and testing user interface of a web strategy game.
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Measurement and anaysis of electrocardiograms
Zimáková, Jana ; Hlaváč, Martin (referee) ; Kolářová, Jana (advisor)
The aim of my barchelor’s thesis was to become familiar with the methology of measurement of electrocardiographic signals, their description and subsequent analysis. During the measurement I used a computer system Biopac and program Matlab. The work is divided into three parts. The first part is focused on general problems of the heart activity, the generation, measurement and description of ECG curves. The second part is devoted to a description of the systém Biopac – recovery, procedure for the measurement and results measured sleep and stress ECG. The third part describes the actual processing of measured signals in Matlab.
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Wireless data acquisition from Bosch XDK in LabVIEW
Hlaváč, Martin ; Krejčí, Jakub (referee) ; Pikula, Stanislav (advisor)
The work summarizes what the XDK 110 is, what sensors it has, their properties and what communication interfaces can be used to communicate with the XDK device. Since the XDK 110 enables communication using Bluetooth Low Energy (BLE), this work presents the possibilities of solving communication using this interface, which is not yet directly supported in LabVIEW. Furthermore, scenarios for reading data from XDK 110 are proposed in the work, and then an application for reading and writing measured data from XDK in LabVIEW is developed and described. The work also describes the software for XDK able to cooperate with the proposed application and describes the data packages intended for communication with the application.
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Block and Tackle
Hlaváč, Martin ; Kašpárek, Jaroslav (referee) ; Pokorný, Přemysl (advisor)
This bachelor work concerned with solving and calculating lifting mechanism of special mobile crane (travel lift). It‘ s make construction analysis. Work has functional and partial solidity calculation. Work includes complete 3D model of block and trackle and design documentation.
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Comparision of FEM models of joints
Hlaváč, Martin ; Hrůza, Václav (referee) ; Pokorný, Přemysl (advisor)
This thesis deals with the comparison of alternative models of the simplified joints used in the FEM models of complex models with detailed joint details. This is essentially a screw connection with dowel bolt and standard bolt, weld connection "T" and overlap weld connection. Individual connections are compared in the simulation results of matching models.
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Design of the central spring units of Formula Student suspensions
Hlaváč, Martin ; Fojtášek, Jan (referee) ; Porteš, Petr (advisor)
This master’s thesis deals with use of central spring unit at Formula Student car. Thanks to CFD simulations, aerodynamics properties of the car was found out according to different position of suspended mass. Within kinematic design of both axles a parameters of spring unit of both axles were defined as well. Whole design was made to increase overall performance of the car thanks to the aerodynamic forces.
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Analysis of long-term electrocardiograms
Bazovský, Richard ; Hlaváč, Martin (referee) ; Kolářová, Jana (advisor)
This work is devoted to methodology of long-term treatment (24 hour) ECG signal using Holter’s monitoring with regard to heart rate variability (HRV). Where HRV is observed distances between heart systole (R-Rwaves) following behind or addiction immediate heart rate. Consequently, these processes can be handled in two ways, either by analyzing the time or frequency domain (spectral range). Through evaluation of these waveforms will be possible to determine the condition status of the heart or type of heart failure. In the programming environment Matlab algorithm was developed for the processing of signals at the output which gives the needed results in the form of graphs (HRV) or the values of important parameters. The functionality of the program was tested on several signals and the obtained values were close to the standard.
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Race Car Steering Design
Hlaváč, Martin ; Porteš, Petr (referee) ; Ramík, Pavel (advisor)
This bachelor’s thesis deals with design of single-seated Formula Student vehicle steering system. Besides the design of steering system, the right position of steering wheel was choosen, regarding to ideal ergonomy conditions. New components like steering rack and steering wheel quickrelease was integrated to the steering assembly. For design of components, simulation with finite elements method was used.
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