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Ekonomická analýza podniku vykupujícího dříví
Klusáček, Jan
Thesis is focused on problematics purchase of wood, exactly determinating of purchase price of wood in two ways: puchase forest stand and purchase forest and land. In calculating purchase price are agreed all factors wich has influence on value including tax value. In thesis are publicated way of purchase wich are used in Czech Republic. Component of thesis is bussines plan with prediction outlay and earnings for one year by presumed montly output. Result of thesis publicated wich outlay has influence on finally purchase price a differnce tax value in two ways of purchase.
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Protection against profiling with random multilingual search
Klusáček, Jan ; Zbořil, František (referee) ; Firc, Anton (advisor)
Aby vyhledávače mohly poskytovat personalizované výsledky pro dotazy, které uživatel vyhledává, musí nejprve vytvořit profil uživatele. Pro vytvoření takového profilu však potřebují shromažďovat značné množství informací o uživatelích, které získávají sledováním jejich činnosti. V důsledku toho může být ohroženo soukromí, a výsledky vyhledávání se mohou stát neobjektivními a subjektivně personalizovanými. Tato práce se věnuje problematice profilování uživatelů v online vyhledávačích, a jejím cílem je zjistit, jestli je možné pomocí náhodného vícejazyčného vyhledávání proces profilování zastavit a nebo jej alespoň zmírnit. Výsledky získané prováděním experimentů naznačují, že ačkoli se při použití náhodného vyhledávání výsledky vyhledávání téměř nemění, vyhledávač u uživatelů, kteří náhodné vyhledávání použili, identifikoval rozdílné zájmy oproti ostatním uživatelům. Navíc tato práce experimentálně ověřila, že pro snížení uživatelského profilování je lepší využít menší množství jazyků a větší poměr náhodných vyhledávní k reálným vyhledáváním uživatele. Mimo jiné bylo také zjištěno, že náhodné vyhledávání má sílu změnit již identifikované zájmy u uživatelů, kteří vyhledávač používali už nějakou dobu bez náhodného vyhledávání.
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Kindergarten Heating Design
Klusáček, Jakub ; Topič, Jan (referee) ; Vendlová, Lucie (advisor)
The main focus of this bachelor´s thesis is solution of heating for kindergarten building. The thesis is divided into three main parts: theoretical, computational and design parts. The theoretical part focuses on central heating. The computational part includes the design of the heating system and hot water preparation. The building is heated using panel radiators and bench convectors. The heat source is provided by a heat substation connected to a central district heating network. The heat substation is thermally independent and is equipped with plate heat exchangers for both the heating system and hot water heating. The design part includes technical report and drawings, which are based on the computational part.
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Dynamic modelling of active railway traction feeders for power quality assessment
Bureš, Jan ; Doleček, Radovan (referee) ; Klusáček, Jan (advisor)
The thesis is focused on modelling of traction feeders for 25 kV 50 Hz traction system in order to assess the influence on voltage quality at point of the connection in 110 kV distribution grid. With respect to various technology of traction feeders, the feeder models, including conventional feeding system and modern converter stations, emphasize operating principle, detailed power circuit structure and description of influence on voltage quality in the distribution grid. The selected technologies of traction feeders are modeled in simulation software PSCAD and influence on voltage quality at the point of connection is assessed via an example, which reflects a realistic operation of traction vehicles in the typical traction system. The models are parametrizable and thus can be used for the connectivity assessment for the distribution system according to national distribution system operators’ standard PNE 33 3430-0. Moreover, the thesis also deals with the use of modern converter feeders for auxiliary frequency services. The operation principle is demonstrated on examples where the basic algorithm and requirements for control layer of converters is described. Finally, an algorithm for synchronization of the feeders supplying adjacent 25 kV 50 Hz railway traction system sections is designed and presented by means of simulation. In general, the thesis shows the use of dynamic models for connectivity assessment to the distribution grid in pre-project phase and for definition and development of converter feeders use cases upon feeding of the railway traction system.
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Integration of Grid-Forming and Grid-Following inverters into the grid
Sýkora, Jan ; Klusáček, Jan (referee) ; Radil, Lukáš (advisor)
The thesis deals with the integration of Grid-Forming and Grid-Following generation plants into the grid. The key parts of this thesis are the assessment of the current state and development of the resource base of the Czech Republic, a critical study of the limiting share of resources lacking natural inertia for maintaining stable and safe operation of the grid and the definition of the nature of inverter resources in "Grid-Forming" and "Grid-Following" modes. The main contribution of the work is the development of models of "Grid-Forming" and "Grid-Following" inverters in order to verify the capability of operation in grid-on mode and their response to disturbances in the system.
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Multilayer neural network
Kačer, Petr ; Klusáček, Jan (referee) ; Jirsík, Václav (advisor)
Bachelor's thesis describes the basics of issue of multilayer neural networks and explains principle of backpropagation algorithm. Next part of thesis is about development of a software for learning and testing multilayer neural networks and describes its graphical user interface. Last part of thesis is dedicated to tutorial examples and practical demonstrations of multilayer neural network usage.
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Estimation of Parameters of Multicopter Model
Loviška, Martin ; Klusáček, Jan (referee) ; Baránek, Radek (advisor)
This thesis is about deployment of methods for parameter estimation in mathematical models. The main task of this work is to implement estimation algorithms on a multirotor mathematical model. First of all, a plainer mathemical model of 2D robot was created to implement estimation algorithms due to complexity of multirotor model. Acquired knowledge was latter used in multirotor parameter estimation.
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Electronic module for acoustic detection
Maršál, Martin ; Klusáček, Jan (referee) ; Havránek, Zdeněk (advisor)
This diploma thesis deals with the design and implementation of an electronic module for acoustic detection. The module has the task of detecting a predetermined acoustic signals through them learned classification model. The module is used mainly for security purposes. To identify and classify the proposed model using machine learning techniques. Given the possibility of retraining for a different set of sounds, the module becomes a universal sound detector. With acoustic sound using the digital MEMS microphone, for which it is designed and implemented conversion filter. The resulting system is implemented into firmware microcontroller with real time operating system. The various functions of the system are realized with regard to the possible optimization (less powerful MCU or battery power). The module transmits the detection results of the master station via Ethernet network. In the case of multiple modules connected to the network to create a distributed system, which is designed for precise time synchronization using PTP protocol defined by the IEEE-1588 standard.
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Feature Selection Based on Combination of Uncorrelated Evaluation Functions
Vaculík, Karel ; Klusáček, Jan (referee) ; Honzík, Petr (advisor)
In order to process large amount of data, it is necessary to use computers. It is possible to use statistical methods or machine learning in some cases. In either case, data can be represented with large number of features. Selection of suitable subset of features can be crucial for efficient processing. This thesis explores a subgroup of feature selection methods which are called filter methods. Comparison of such methods is carried out and the results are used in the design of a new method. This new method uses a combination of existing methods.
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