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Solution of optimization problems with non-decreasing constraints.
Pavlíček, Ondřej ; Zimmermann, Karel (advisor) ; Palata, Jan (referee)
The content of this work is a presentation of algorithms solving optimization problems with a max-separable objective function of the form f(x) = maxjJ fj (xj), where fj are continuous unimodal functions. The optimization problems are solved under constraints, which are described by a system of (max,+)-linear equations and inequalities with variables occurring on both sides of the constraints. In Chapter 6, a modification of this problem with different variables on each side of the constraints is studied. Chapter 7 deals with problems, in which the constraint coefficients may be infinite. The work is based on results contained in previous publications, in which was shown that if the set of feasible solutions of the optimization problems considered here is nonempty, it has always the greatest element. The algorithms suggested in this work begin with this greatest element and decrease step by step the objective function without leaving the feasible set. The method proceeds in a certain sense by analogy with the method of feasible directions. Proofs of correctness of the algorithms and some results concerning computational complexity, as well as a computer implementation are included in the concluding part of the work.
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Folic acid release from branched and crosslinked oligoester carriers
Hanáková, Pavlína ; Dittrich, Milan (advisor) ; Šnejdrová, Eva (referee)
ABSTRACT-EN In the thesis were demonstrated possibilities for modification of the release period for folic acid incorporated into matrices prepared from poly(DL-lactic acid) branched by mannit or dipentaerythritol. The range of release process duration from two days to 45 days was demonstrated. Process was shortened by increasing concentration of triethylcitrate used as plasticizer of oligoester carrier, the second possibility concentration of branching agent builded into molecule, and the third one was pH of dissolution medium. Prolongation of release of folic acid was achieved by crosslinking agent as additive incorporated into matrices.
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Cartesian Genetic Programming in Evolutionary Art
Veselý, Pavel ; Hyrš, Martin (referee) ; Petrlík, Jiří (advisor)
This thesis deals with use of Cartesian Genetic Programming (CGP) in Evolutionary Art (EvoArt). Text presents introduction to the topic. The rest of the thesis focuses on the process of design, implementation and testing of new method of application CGP in EvoArt. The proposed method uses CGP to create 2D vector images. Web application for EvoArt creation is made to demonstrate this method. Achieved results are presented and evaluated.
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Parallelisation of Ultrasound Simulations on Multi-GPU Clusters
Dujíček, Aleš ; Kula, Michal (referee) ; Jaroš, Jiří (advisor)
This work is part of the k-Wave project, which is a toolbox designed for time ultrasound simulations in complex and heterogeneous media. The simulation functions are based on the k-space pseudospectral method. The goal of this work is to compute these simulations on graphics cards using local domain decompostion. Thanks to decomposition we could compute these simulations faster, and on larger data grids. The main goal of this work is to achieve efficiency and scalability.
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Parameter Optimization of Multi-Level Diffraction Gratings
Matějka, Milan ; Kolařík, Vladimír ; Horáček, Miroslav ; Král, Stanislav
Originally, the e-beam lithography (EBL) is a technique for creating high-resolution black and white masks for the optical lithography. Multi-level relief structures can be also prepared using EBL patterning. Their preparation is based on the image patterning with a gradient of exposure doses. Large-area multi-level structures can be effectively prepared using the electron beam pattern generator with a variable shaped beam. We present several writing strategies. Basically, the main writing strategy uses one stamp (i.e. one elementary exposure of the shaped electron beam) per one elementary area with the same exposure dose. This simple approach is fast and flexible, however it does not guarantee optimal results. The main problem is an imperfection of the stamps (size, shape, and homogeneity). Advanced algorithms are based on multiple\nexposure of the same elementary area, the total local exposure dose is a sum of several different elementary exposures (stamps). Using these algorithms, a smoother surface of the structure can be achieved. On the other hand, the writing speed is considerably decreased. Tradeoff between the achieved parameters and the writing speed is discussed for selected set of writing strategy algorithms.
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Assessing the state of Business Intelligence and proposals for its improvement
Švec, Richard ; Přibil, Jiří (advisor) ; Zelená, Veronika (referee)
This thesis analyzes the situation in the area of Business Intelligence at O2 Czech Republic. It focuses on identifying key issues and finding solutions to the overall improvement of the service within the company. It can be a guide for managers on how to proceed in the analysis of the BI environment, finding opportunities for improving organization setup and technical aspects, especially in the data warehouse solution. Here one can also find recommendations on how to proceed with the definition of development methodologies and how to effectively set the tools and processes associated with the development of the data warehouse. This approach results in an efficient, clearly documented and sustainable development concept of the data warehouse in a large company.
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Phenotypic Analyses of the HD transgenic Minipig Model
Motlík, Jan ; Ellederová, Zdeňka
The transgenic model of Huntington’s disease in minipig (TgHD) was created in 2009 and information coding the sequence of N-terminal part of human mutated huntingtin was transferred to subsequent generations from both female and male sides. In each litter, transgenic (TgHD) and wild-type (WT) piglets were born in approximately equal ratio. At present, the Laboratory of Cell Regeneration and Plasticity keeps sets of animals in F2 and F3 generations with identical genetic background and bred in identical conditions of feeding and housing. The present research project was focused on a complex of non-invasive and invasive approaches to WT and TgHD minipigs to achieve the entire phenotypic analysis of HD progression in this large animal model.
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New Approaches in Airborne Thermal Image Processing for Landscape Assessment
Pivovarník, Marek ; Pokorný,, Jan (referee) ; Štarha, Pavel (referee) ; Zemek, František (advisor)
Letecká termální hyperspektrální data přinášejí řadu informací o teplotě a emisivitě zemského povrchu. Při odhadování těchto parametrů z dálkového snímání tepelného záření je třeba řešit nedourčený systém rovnic. Bylo navrhnuto několik přístupů jak tento problém vyřešit, přičemž nejrozšířenější je algoritmus označovaný jako Temperature and Emissivity Separation (TES). Tato práce má dva hlavní cíle: 1) zlepšení algoritmu TES a 2) jeho implementaci do procesingového řetězce pro zpracování obrazových dat získaných senzorem TASI. Zlepšení algoritmu TES je možné dosáhnout nahrazením používaného modulu normalizování emisivity (tzv. Normalized Emissivity Module) částí, která je založena na vyhlazení spektrálních charakteristik nasnímané radiance. Nový modul je pak označen jako Optimized Smoothing for Temperature Emissivity Separation (OSTES). Algoritmus OSTES je připojen k procesingovému řetězci pro zpracování obrazových dat ze senzoru TASI. Testování na simulovaných datech ukázalo, že použití algoritmu OSTES vede k přesnějším odhadům teploty a emisivity. OSTES byl dále testován na datech získaných ze senzorů ASTER a TASI. V těchto případech však není možné pozorovat výrazné zlepšení z důvodu nedokonalých atmosférických korekcí. Nicméně hodnoty emisivity získané algoritmem OSTES vykazují více homogenní vlastnosti než hodnoty ze standardního produktu senzoru ASTER.
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Za rámec běžného plánování podníkání: budování internetového startupu v rychlé ekonomice
Šimek, Vojtěch ; Krause, Josef (advisor) ; Vaněček, Michal (referee)
First part of the thesis compares available approaches on business planning, namely the traditional and newly emerged and proposes a Business Planning Approach Selection Framework that should help (newbie) entrepreneurs with orientation in the chaotic business planning world and choosing an approach suiting their specific needs. Conclusion of the theoretical part is that both the traditional and modern business plans have their role in todays business environment. While the old are great for external presentation and funds securing, the new enable to create more complex process for planning successful business from the original idea to and beyond their launch, building on customer feedback and gradual iterations. The practical part then builds on the theoretical research and aims to check feasibility of an actual business project, a multisided platform mediating sales of automotive financial products. It describes the model refinement and product creation process as well as eventually proves viability and feasibility of the whole business.
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Title of the Master´s Thesis
Sečkárová, Adriana ; Vrbová, Lucie (advisor) ; Hájek, Jiří (referee)
The goal of ZOFF is formulated as a change of stagnation and increase in annual profit in term of 2 years, provided adequate low risk. The paper describes the outcomes and conclusions from a marketing research that highlights the key attributes of the company and its target audience. Way out of the situation lies in identifying the problem and its subsequent formulation. To achieve the objective are used various methods of creation and comparison of the criteria which define variants created. This process comprises a decision matrix for identification and comparison of risk scenarios. The output of the work is to evaluate and compare the resulting variants and recommendation to the elimination of possible threats.
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