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Web Visualization of Smart Devices Data in IoT
John, Petr ; Burget, Radek (referee) ; Hynek, Jiří (advisor)
Due to the constant growth in the count of smart devices the need to store, aggregate and process the data effectively rises. The gathered data needs to be displayed effectively to the user, who will be able to react to the current state of the monitored device. This master's thesis deals with storing the data and displaying them using dashboards. The goal of this thesis was the creation of a library composed of components intended for data visualization and a simple API application, that can store and query the data effectively. The library is introduced in a simple application that uses the API application. Some parts of this solution are currently used in the company Logimic, where the costs of the database system reduced to 15 % of the average cost of the previous database system in the last 2 months. The rest of the solution is currently being integrated into the existing systems of the company.
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Business Intelligence in a Corporate Environment
Župka, Petr ; Bednář, Luboš (referee) ; Kříž, Jiří (advisor)
The content of the diploma thesis is focused on the use of selected tools of knowledge management and business intelligence in order to create a self-assessment questionnaire and competency report to improve the recruitment process of new employees and decision support in terms of allocation of human resources on projects in the selected company.
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Monitoring and Simulation of ADS Experimental Target Behaviour, Heat Generation, and Neutron Leakage
Svoboda, Josef ; Kliman,, Ján (referee) ; Wagner,, Vladimír (referee) ; Katovský, Karel (advisor)
Urychlovačem řízené podkritické systémy (ADS) se schopností transmutovat dlouhodobě žijící radionuklidy mohou vyřešit problematiku použitého jaderného paliva z aktuálních jaderných reaktorů. Stejně tak i potenciální problém s nedostatkem dnes používaného paliva, U-235, jelikož jsou schopny energeticky využít U-238 nebo i hojný izotop thoria Th-232. Tato disertační práce se v rámci základního ADS výzkumu zabývá spalačními reakcemi a produkcí tepla různých experimentálních terčů. Experimentální měření bylo provedeno ve Spojeném ústavu jaderných výzkumů v Dubně v Ruské federaci. V rámci doktorského studia bylo v průběhu let 2015-2019 provedeno 13 experimentů. Během výzkumu byly na urychlovači Fázotron ozařovány různé terče protony s energií 660 MeV. Nejdříve spalační terč QUINTA složený z 512 kg přírodního uranu, následně pak experimentální terče z olova a uhlíku nebo terč složený z olověných cihel. Byl proveden také speciální experiment zaměřený na detailní výzkum dvou protony ozařovaných uranových válečků, z nichž je složen spalační terč QUINTA. Výzkum byl především zaměřen na monitorování uvolňovaného tepla ze zpomalovaných protonů, spalační reakce a štěpení, způsobeného neutrony produkovanými spalační reakcí. Dále se na uvolňování tepla podílely piony a fotony. Teplota byla experimentálně měřena pomocí přesných termočlánků se speciální kalibrací. Rozdíly teplot byly monitorovány jak na povrchu, tak uvnitř terčů. Další výzkum byl zaměřený na monitorování unikajících neutronů z terče porovnávací metodou mezi dvěma detektory. První obsahoval malé množství štěpného materiálu s teplotním čidlem. Druhý byl složený z neštěpného materiálu (W nebo Ta), avšak s podobnými materiálovými vlastnostmi se stejnými rozměry. Unik neutronů (resp. neutronový tok mimo experimentální terč) byl detekován uvolněnou energií ze štěpné reakce. Tato práce se zabývá přesným měřením změny teploty pomocí termočlánků, s využitím elekroniky od National Instrument a softwaru LabView pro sběr dat. Pro práci s daty, analýzu a vizualizaci dat byl použit skriptovací jazyk Python 3.7. (s využitím několika knihoven). Přenos částic by simulován pomocí MCNPX 2.7.0., a konečně simulace přenosu tepla a určení povrchové teploty simulovaného modelu bylo provedeno v programu ANSYS Fluent (pro jednodušší výpočty ANSYS Transient Thermal).
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Data Visualization Blender Add-On
Doležal, Zdeněk ; Milet, Tomáš (referee) ; Chlubna, Tomáš (advisor)
With growing interest in visualisation techniques, possibility to extend existing 3D computer graphics software by visualisation tools arises. Thesis deals with theory of data visualisation in general, selection of suitable visualisations, design, creation and publication of an data visualisation add-on for the open-source software Blender. Thanks to this work Blender is extended using its Python API by an interface used for data loading and commonly used charts generation. The published implementation was evaluated by user survey and it is available open-source.
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Game Server Status Monitoring Portal
Skála, Dominik ; Hynek, Jiří (referee) ; Burget, Radek (advisor)
The main goal of this thesis is the development of a game server monitoring application which handles collecting and visualisation of collected data. The thesis compares and looks into existing solutions, their pros and cons. The solution is built upon this observation, specifically the design of the monitoring application and a modern web application with API access. The API is created using the Yii PHP Framework. The user interface is created using the ReactJS JavaScript library. The monitoring application itself is an independent application build in PHP. In the conclusion of the thesis, the evaluation of achieved results and the effectivity of the monitoring application is discussed. Based on the results, other implementations of monitoring applications and other extensions of web application are proposed.
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Data Visualisation Methods in the Statistical Computational Programme R
Hanková, Monika ; Procházka, Jiří (advisor) ; Malá, Ivana (referee)
Visualisation is a key element for analysis in statistics. This thesis describes data visualisation methods in the statistical computational programme R which, thanks to add-on packages, contains several tools for plotting. Data visualisation may be much more complicated than it seems to be, the focus is aimed at the general connection between packages as well as the particular visualisation of base graphics, ggplot2 and lattice package. These packages are built based on the traditional graphical model in R, grammar of graphics and trellis plotting. The interactive shiny app provides an overall view about how the data are visualised by each package.
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A Tool for Sharing and Visualization of Skydiving Records
Madaj, Tomáš ; Kolář, Martin (referee) ; Herout, Adam (advisor)
Purpose of this work is to create a web application which would enable easiest possible 3D visualisation and sharing of uploaded GPS logs. It is intended mainly for aerosports. The application is built on the full-stack JavaScript platform Meteor.js, it features a web user interface and utilizes WebGL library three.js for 3D visualisations in browser. This form allows to achieve intended accessibility and simplicity of usage. The application is a valuable sports performance analysis tool. It brings accurate view of the actual trajectory in the sky where it's otherwise impossible due to the absence of a close visual reference point.
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Data Discovery Tools Comparison
Kopecký, Martin ; Novotný, Ota (advisor) ; Maryška, Miloš (referee)
Diploma thesis focuses on Data Discovery tools, which have been growing in im-portance in the Business Intelligence (BI) field during the last few years. Increasing number of companies of all sizes tend to include them in their BI environments. The main goal of this thesis is to compare QlikView, Tableau and PowerPivot using a defined set of criteria. The comparison is based on development of human resources report, which was modeled on a real life banking sector business case. The main goal is supported by a number of minor goals, namely: analysis of existing comparisons, definition of a new set of criteria, basic description of the compared platforms, and documentation of the case study. The text can be divided into two major parts. The theoretical part describes elemental BI architecture, discusses In-memory databases and data visualisation in context of a BI solution, and analyses existing comparisons of Data Discovery tools and BI platforms in general. Eight different comparisons are analysed in total, including reports of consulting companies and diploma theses. The applied part of the thesis builds upon the previous analysis and defines comparison criteria divided into five groups: Data import, transformation and storage; Data analysis and presentation; Operations criteria; User friendliness and support; Business criteria. The subsequent chapter describes the selected platforms, their brief history, component architecture, available editions and licensing. Case study chapter documents development of the report in each of the platforms and pinpoints their pros and cons. The final chapter applies the defined set of criteria and uses it to compare the selected Data Discovery platforms to fulfil the main goal of this thesis. The results are presented both numerically, utilising the weighted sum model, and verbally. The contribution of the thesis lies in the transparent confrontation of three Data Discovery tools, in the definition of a new set of comparison criteria, and in the documentation of the practical testing. The thesis offers an indirect answer to the question: "Which analytical tool should we use to supplement our existing BI solution?"
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