National Repository of Grey Literature 187 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Mathematical Model of Quadcopter
Gajdošík, Martin ; Veigend, Petr (referee) ; Rozman, Jaroslav (advisor)
The aim of the bachelor thesis is to create a mathematical model of a quadcopter and its subsequent simulation in MATLAB and Simulink environment. It will also deal with a design and implementation of an autonomous control system with which we will perform flight tests in two flight configurations. These configurations will be with one or two engines in front of vehicle. We will also look at the computational complexity of this model and the possibilities of further expansion.
ABS Impact to Behavior of Vehicle
Zich, Jakub ; Šimek, Václav (referee) ; Strnadel, Josef (advisor)
The bachelor thesis discusses the Anti-lock braking system and its impact on braking distance of a vehicle. The thesis contains research of this problem, a summary of suitable modeling tools, solution draft, its implementation in the UPPAAL modeling tool and tests performed with the model. The tests examine the course of progression of basic quantities associated with braking (velocity, braking distance, slip, angular velocity, friction coefficient) in simulations of emergency braking with and without the use of ABS, and compare the results. They also verify probability of the vehicle stopping in different circumstances on given distance. Lastly, the model can simulate brake or sensor defect, and results of those simulations can be compared to simulations without defect.
Untraditional Actuators Sma Type -Modeling Of Hysteresis
Vašina, Michal
The shape memory materials are known since first half of the twentieth century. The example of these materials could be a Shape Memory Alloys (SMA). Because of their attributes, the engineers usually call them a „smart materials“. The SMA can be used in many static or dynamic applications for example in problem of actuators. Thanks to the SMA materials sophistication and associated shape memory effect, there are some issues (hysteresis, degradation etc.), which can complicate their prospective usage. The attributes of SMA classified these actuators to the category of non-linear system with hysteresis. This article deals with the SMA use and potential hysteresis modeling approaches. Several model examples are discussed.
x86 Assembler Simulator for Education
Heštera, Andrej ; Semerád, Lukáš (referee) ; Orság, Filip (advisor)
Point of this thesis is gain knowledge base of x86 Instruction Set Architecture and x86 assembly language through analysis. Based on this knowledge, design and implement simulation environment in object oriented programming language Java SE8. This environment will give user option to create code based on conventions and syntax of Netwide Assembler and simulate created code on virtual representation - simulation model, which will imitate behavior of processor implementing instruction set architecture x86. The result of using this environment should be new knowledge for user about basic function of machine code execution and how this execution alters state of processor, without the need to specially compile created code for use in Debugger and having physical system implementing architecture x86.
Design and Implementation of Effect Model in Simulation System OneSAF Testbed Baseline
Hubeňák, Marian ; Kunovský, Jiří (referee) ; Rozman, Jaroslav (advisor)
This project deals with the modelling and the simulation, its basic characteristics as well as its respective branches. The majority of the project is aimed at modelling and simulation in military environment with a description of the asset in this area while considering different uses of these simulations. I also introduce the development of modelling and simulation in the army of Czech Republic. The project also deals with the constructive simulation and tries to bring out the OneSAF Testbed Baseline simulation system. At last, I propose some concepts of models for this particular simulation system - the model of psychological effects and the model of generating the rubble during the operations of the artillery.
Procedural modeling and realism in computer graphics
Beneš, Jan ; Křivánek, Jaroslav (advisor)
One of the long-standing goals of computer graphics is to generate realistic imagery. This realism is predicated, among other things, on having access to high- quality content to display, and being able to verify its realism. Unfortunately, realism and especially realism in procedural modeling are under-represented in current literature. Consequently, we address these two topics by investigating the definitions of general realism in computer graphics and by providing a basic framework for thinking and talking about realism in procedural modeling. In or- der to provide this framework with initial tangible data, we present a user study of the realism of procedural buildings. We find that realism of this specific class of procedural models is carried on different scales and conclude that authors of procedural rules for buildings need to beware of not only the fine details, but also the overall shape of the generated models. Finally, we present a method for growing procedural road networks in and close to cities. We use a traffic simula- tion and adapt existing research to grow cities over time. The cities are formed by letting several meaningfully positioned smaller settlements' minor roads grow in step with additional major roads. As a result, we are able to generate cities with rich, complex and realistic...
Verification of the urban design of Mendlovo náměstí from the point of traffic
Zelinka, Petr ; Všetečka, Martin (referee) ; Apeltauer, Jiří (advisor)
The diploma thesis deals with the modeling of traffic in the Mendel Square according to the documents of the Office of the Brno Architect. The modeling process takes place in software Aimsun. The result of this work is to compare the data with the provided results according to the standard, to determine the resulting output values from the software and to identify the problem areas affecting individual transport and urban public transport.
Procedural modeling and realism in computer graphics
Beneš, Jan ; Křivánek, Jaroslav (advisor) ; Patow, Gustavo (referee) ; Biljecki, Filip (referee)
One of the long-standing goals of computer graphics is to generate realistic imagery. This realism is predicated, among other things, on having access to high- quality content to display, and being able to verify its realism. Unfortunately, realism and especially realism in procedural modeling are under-represented in current literature. Consequently, we address these two topics by investigating the definitions of general realism in computer graphics and by providing a basic framework for thinking and talking about realism in procedural modeling. In or- der to provide this framework with initial tangible data, we present a user study of the realism of procedural buildings. We find that realism of this specific class of procedural models is carried on different scales and conclude that authors of procedural rules for buildings need to beware of not only the fine details, but also the overall shape of the generated models. Finally, we present a method for growing procedural road networks in and close to cities. We use a traffic simula- tion and adapt existing research to grow cities over time. The cities are formed by letting several meaningfully positioned smaller settlements' minor roads grow in step with additional major roads. As a result, we are able to generate cities with rich, complex and realistic...
Analysis of electrical and thermal effects during electroporation
Novotná, Veronika ; Richter, Aleš (referee) ; Hána,, Karel (referee) ; Červinka, Dalibor (advisor)
This dissertation thesis describes a phenomenon called electroporation. It is about its theoretical aspects as well as about modeling of processes in the tissue during electroporation. Further, it describes the technical design of two developed unique experimental generators of DC and AC pulses for electroporation purposes. It also includes a description of experiments which were done using discussed generators.
Methods in research of insects mobility
Jor, Tomáš ; Hadrava, Jiří (advisor) ; Lučan, Radek (referee)
Mobility is one of the basics characteristics of the insects populations. This bachelor thesis presents a compendium of methods used in research of insects mobility. In the first part are described methods of marking individuals utilized for Mark-Recapture studies aiming to study insects movements. First are presented the indirect methods of individuals tracking, further the methods of direct tracking of insects using a radio-telemetry are described. In the second part the thesis focused on modeling of insects mobility using dispersion functions with connection to metapopulation dynamics and a dispersion itself. Difusion model based methods and simpler estimates of movemensts are also presented in this part. Key words: Insects, Mobility, Mark-Recapture, Modeling

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