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Disassembler and Analyser of Binary Code
Bayer, David ; Smrčka, Aleš (referee) ; Peringer, Petr (advisor)
This thesis is focused on binary code disassembly. It describes the design of ARM and AVR architectures and does a research into existing solutions. Based on this knowledge, we designed and implemented a disassembler-like application. The application provides a graphical user interface to facilitate the starting of disassembly and displays the result. The designed environment is extensible to more disassemblers, disassembly algorithms, and code analysis.
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Adaptive Trading Strategies for Cryptocurrencies
Filip, Marek ; Perešíni, Martin (referee) ; Homoliak, Ivan (advisor)
Obchodní strategie pro kryptoměny bývají založeny na padajícím nebo stoupajícím trhu. Kámen úrazu nastává, když jsou aplikovány na špatný trend v tak nestabilním trhu, jako je ten s kryptoměnami. Tato práce se zabývá možností adaptivních obchodních strategií, které se dokáží přizpůsobit na klesající a stoupající trendy v kryptoměnovém trhu. Analyzováním ceny Bitcoinu a vytvořením metriky risku, kde se díváme na extrémy vytvořené funkce, můžeme dojít k řešení návrhu adaptivních strategií. Zkoumají se jak dlouhodobé, tak krátkodobé možnosti investování. K vyhodnocování strategií a vykreslování časových řad je vytvořen rozšířitelný program pro testování historických dat. Výsledky jsou porovnány s tradičními přístupy, jako je HODL a rebalancování, přičemž bylo zjištěno, že při použití správných kritérií se mohou více než ztrojnásobit. Práce nabízí investorům nové způsoby zisků a zároveň dává čtenářům možnost nahlédnout do tvorby (adaptivních) strategií a jejich zpětného testování v kódu. Předpokládá se, že výsledky práce budou využívány automatizovanými obchodními systémy.
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Implementation of General Disassembler
Přikryl, Zdeněk ; Masařík, Karel (referee) ; Lukáš, Roman (advisor)
This thesis presents the process of creating disassembler for new designed processors. We demand automatic generation of the disassembler. Instruction set for processor is modeled by specialized language ISAC, which offers resources for description of the instruction set. For example it describes format of instruction in the assembly language or format of instruction in the binary form or behavior of this instruction. Internal model is coupled finite automata, which describes relation of textual form of the instruction and binary form of the instruction in formal way. The code of disassembler is generated from the internal model. This disassembler accepts program in binary code at the input and generate equivalent program in assembly language at the output.
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PMD - polarization mode dispersion and its effects on data transport
Trávníček, Pavel ; Dostál, Otto (referee) ; Filka, Miloslav (advisor)
My graduation thesis is concerned with the effect of polarization mode dispersion on transmitted signal by optical line. It describes external and internal causes of origination of polarization mode dispersion. On the basis of these effects there is a differential group delay (DGD). It is the time delay in meantime within individual modes. DGD results in a time extension of impulsion and limitation of maximum bit rate. This thesis contains localization methods of part of gossamer filament with increased value of PMD by POTDR method. This method is based on the principium of back dispersion and its modifications SOP a DOP. Very important chapter of this thesis is the measurement of the polarization mode dispersion. There are described methods of PMD measurement. It is the interferometric and polarimetric method and the method of state of polarization. The major part of this thesis is about the reduction of polarization mode dispersion effect. This part is divided into two parts. First part is about the methods of PMD effect reduction and the second one is about the PMD compensation. The discrepancy between these two parts is the reduction way of PMD effect on transmitted channel. The compensation use the compensation components inserted into the transmission path. By PMD reduction methods we can solve the problems from the view of changing of fibre or all cable. For better understanding of polarization mode dispersion effect there are simulated 4 optical lanes of various parameters. The simulation output is the eye diagram which provides the view at results of transmission lane. In the final part there is the evaluation of measured parameters of optical lanes simulated in a laboratory.
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Neural Networks and Prediction of Time Series
Sviták, Jiří ; Šperka, Svatopluk (referee) ; Petřík, Patrik (advisor)
Bachelor's thesis studies neural networks that are used for time serie prediction. Particularly it is feedforward neural network with backpropagation learning algorithm, neural network with radial basis functions and higher order neural network. Various parameters of these networks are tested and comparised. Testing is performed on time series of historical prices of financial markets. Other neural networks and other forecasting methods of financial markets are mentioned briefly.
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Mobile Application for Scanning Hitori from Newspapers and Finishing It
Burešová, Monika ; Malinka, Kamil (referee) ; Dyk, Tomáš (advisor)
This bachelor's thesis deals with development of mobile application with elements of computer vision and artificial intelligence, which is designed for Android operating system. The application is used for scanning Hitori from photo and then finishing it on a mobile device. Moreover, this application provides hint, undo or shows a violation of rules of the game. The OpenCV library is used for image processing, Tesseract library is used for digits recognition. Scanned games are stored in a database, which is implemented using Room library. Hitori solution is found by combination of backtracking algorithm and known techniques for solving this game. The final application is available on Google Play and is named Hitori Scan & Play.
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Apartment building
Herůdek, Pavel ; Nespěšný, Ondřej (referee) ; Pěnčík, Jan (advisor)
The subject of bachelor thesis, is a design of new apartment building in range of Construction Object – Apartment building and elaboration of the desing documentation for construction. The buildign is placed in eastern edge in Brno in the district Brno - Líšeň, on a sloping terrain. Apartment building is designed with four floors and underground floor with technical background. The apartment building contains eight apartments, on each floor two apartments. On the top floor are designed two apartments with terrace. There is established a wheelchair access to the building. In the building is desinged a elevator. Construciton of vertical supporting are made of ceramic block Porotherm. The vertical strucutres are made of reinforced concrete cast-in-place ceiling. Roofing is designed as double skin flat roof. The building is based on concrete foundation strips. Nearby the Apartment building is placed a carpark with sufficient parking places. The apartment building is designed as nearly zero-energy building. That has been achieved by heat recovery system on ventilation system and parameters of building envelope.
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Comparison of the effect of the two-mass and hydraulic buffers on the impact of the self-loading rifle
Talanda, Jakub ; Blaťák, Ondřej (referee) ; Vančura, Jan (advisor)
The focus of this thesis are the effects of dual-body and hydraulic recoil buffers on measured recoil of an AR-15 type self-loading rifle. The first part explains the working principles of the rifle and both mentioned buffer designs and points out the sources of the recoil effect. A brief summary of contemporary knowledge and already conducted research into the problem follows. The second part describes an experiment in which the recoil force was measured using a force sensor placed between the rifle butt and shooter’s shoulder. At the end, outcomes of this research are discussed and results obtained for both buffer designs are compared.
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Design of the latched comparator and its comparison with an opamp like comparator
Mrázek, Petr ; Kledrowetz, Vilém (referee) ; Prokop, Roman (advisor)
The main content of this work is the design of four basic topologies of latched comparators and opamp like comparator. The introductory part of the bachelor thesis deals with the description, comparison and principles of operation of comparators such as opamp like comparator and latched comparators. In the practical part of this work is firstly performed the design of all the mentioned topologies of switched comparators and comparator of the operational amplifier type. Subsequently, they are compared with each other mainly in terms of their speed, accuracy, amount of kickback noise and consumption. At the end of the practical part, the design of these four basic topologies of switched comparators have been performed again, but already with the techniques for reduction of kickback noise applied to them. The whole work is concluded by the evaluation of individual acquired knowledge.
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Java decompiler
Žamberský, Zdeněk ; Heriban, Pavel (referee) ; Roupec, Jan (advisor)
The goal was to create decompiler for Java programing language. Decompiler should reconstruct original Java source code from class files, representing its compiled form. First part of thesis focuses on Java langage, its compilation and structure of class file. Then Java Virtual Machine and its instruction set is discussed. After that thesis focuses on decompilation and algoritms designed and used for decompiler realization. Examples of decompiled code are presented.
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