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Mobile Application for Exporting Android Device Metrics into a Prometheus Database
Ptáček, Martin ; Burget, Radek (referee) ; Rychlý, Marek (advisor)
Tato práce se zabývá rozšířením ekosystému databáze časových řad Prometheus, aby bylo možné monitorovat také mobilní telefony s operačním systémem Android. Cílem této práce je implementovat Prometheus exportér pro Android. Výsledná implementace tohoto exportéru podporuje nejen zpřístupnění metrik pro databázi Prometheus, ale také ukládání metrik do paměti zařízení v případě nedostupnosti připojení a jejich následný dávkový export. Aplikace také obsahuje režim pro export metrik do databáze Prometheus přes NAT nebo podobnou síťovou bariéru. Aplikace exportuje přes 35 různých metrik z Android zařízení do databáze Prometheus. Čtenáři jsou předloženy výsledky testů týkající se energetické náročnosti implementace. Práce je publikována jako software s otevřeným zdrojovým kódem na platformě Github.
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Gaussian Process Regression under Location Uncertainty using Monte Carlo Approximation
Ptáček, Martin
Gaussian Process Regression (GPR) is a commonstatistical framework for spatial function estimation. While itsflexibility and availability of closed-form estimation solutionafter training are its advantages, it suffers on applicabilityconstraints in scenarios with uncertain training positions. Thispaper presents the derivation of the exact GPR operating onuncertain training positions along with approximation of theresulting terms using Monte Carlo (MC) sampling. This methodis then implemented in a simulation environment and shown toimprove the estimation quality over the standard GPR approachwith uncertain training positions.
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Overview of the Current State of the Art of Existing Energy Community Concepts in Europe and their Possible Implementation in the Czech Republic
Vojtech, Jan ; Ptacek, Michal
This paper presents an overview of the current stateof the art of energy communities in Europe and discusses realexamples/concepts implemented in some countries that fulfill theissued EU directives by different technical ways. Therefore,it brings so-called allocation keys used in the individual energycommunity concepts for the distribution of produced energybetween consumers and shows the important differences of thesekeys and their impacts (benefits/disadvantages) for consumersor distribution system operators, so distribution tariffs and thefuture evaluation of allocation keys are also presented.Furthermore, there is the discussion which energy communityconcepts (implemented in European countries) or their specificparts can be transferred to the Czech Republic, especially in thecontext of the current laws and their preparations.
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Electrical system designs of the hotel complex with wellness
Veselý, Vít ; Bátora, Branislav (referee) ; Ptáček, Michal (advisor)
The bachelor thesis deals with the implementation of the technical solution - the distribution of the electrical network of the hotel with wellness. The theoretical part of the thesis presents an analysis of the basic elements used for the design of substations and busbars and introduces the basic computational apparatus for sizing transformers and lines. The practical part presents the various technical solutions for the design of the electrical network of the site, specifically addressing the design of low voltage (LV) cable lines for two variants providing 100 % backup of the electrical supply to the site and two other variants providing 50 % backup. In addition to the technical design of the individual options, the work also presents for each option their detailed financial budgets, including their overall economic comparison.
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Evaluation of the energy community concept in the Czech Republic conditions
Vojtěch, Jan ; Galík, Tomáš (referee) ; Ptáček, Michal (advisor)
The thesis is divided into six main parts. The first part deals with the description of European directives, regulatory instruments, and support instruments in the field of energy communities in the countries of the European Union, specifically Austria, Germany, France, and Spain. The second part is devoted to a study predicting the future development of domestic decentralized sources and their installed capacity potential. The third part deals with the current legislative state of domestic energy communities, including an outline of the possible future form of energy communities. The fourth part deals with the description of usable allocation keys and the differences between them, as well as distribution tariffs of the public distribution network and their possible adjustments and discounts related to energy communities. The fifth part deals with the description of the model and the scenarios used for its analysis, including the presentation of the results and the impact on distribution tariffs. The last part presents recommendations for distribution system operators, the Energy Regulatory Office and for energy communities.
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Application of the risk index matrix principles to electric power distribution system elements
Bruzl, David ; Hála, Vojtěch (referee) ; Ptáček, Michal (advisor)
The master thesis deals with the evaluation of the use of the risk index matrix (RIM) principle for distribution system elements. It evaluates the current use of RIM in EG.D, a.s., examines the individual RIM inputs and also reveals the bottlenecks. An updated method of assigning elements to the RIM is proposed that addresses the problems described and is also generally applicable to other distribution system elements at medium and low voltage levels. At the same time, a sensitivity analysis is performed to investigate the influence of different factors on the RIM and to verify the stability of the categorization of the resulting RIM. The thesis also serves as a methodology for assigning elements to the RIM and includes recommendations for the distribution system operator (DSO).
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A Nodalization Study of Phebus FPT-1 Experiment in MELCOR 2.2
Cerny, T. ; Ptacek, M.
Phebus, an integral experimental facility located in France, is scaled down version of a French 900 MWe pressurized water reactor (PWR) by a ratio of 1/5000. The goal of the facility is to study phenomena occurring during light water reactor severe accidents and validate models and computer codes used for calculation of sever accidents. The aim of this paper is to compare different modelling approaches in MELCOR 2.2 computer code and the influence on thermal hydraulic behavior and core degradation in comparison with experimental results.
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Conceptual design of a polymeric gear tester in vacuum
Ptáček, Matyáš ; Šperka, Petr (referee) ; Černohlávek, Mikuláš (advisor)
The bachelor thesis deals with the conceptual design of a polymeric gear tester in vacuum. Using a test device, it is possible to test the coefficient of friction in gears. At the beginning of the work is described the issue of operating conditions of satellites in low orbit together with the effects that affect them. Subsequently, suitable polymeric materials are selected, and current publicly available test rigs are described. Based on the research, two conceptual designs are made, one of them is selected and described in detail at the end of the work.
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Use of the MAWIS Photo solution for data collection and creation of 3D building models
Viktorin, Tomáš ; Wasserbauer, Vojtěch (referee) ; Ptáček, Michal (advisor)
This bachelor thesis deals with the use of the MAWIS Photo service for data collection and creation of 3D models with a specific focus on cable routes. In this context, the thesis provides a basic overview of the legislation and technical standards relevant to the implementation of projects and the control of cable route construction. It also focuses on a detailed description of the MAWIS Photo web application, including it`s usability, basic principles of operation, advantages and disadvantages. The thesis also discusses GIS systems and surveying in relation to energy construction. In the practical part of the thesis, the applicability of the application in practice is verified, specifically the description of the measured cable route, measurements, creation of a 3D model of the structure, subsequent creation of drawing documentation and evaluation of the achieved results. Following the direct experience gained with the use of MAWIS Photo application, the thesis also provides a critical evaluation of the applicability of the application itself in the practice of power structures.
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