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Virtuální privátní sítě na bázi technologie MPLS
Daněk, Michal ; Červenák, Rastislav (oponent) ; Novotný, Vít (vedoucí práce)
Diplomová práce se zabývá architekturou sítě na bázi technologie multiprotokolového přepojování podle návěští (MPLS). Dále její využití pro bodové či více bodové spoje ať už na úrovni síťové nebo spojové vrstvy. Praktická část práce je zaměřena na návrh laboratorní úlohy, jejíž náplní je konfigurace technologie virtuální privátní LAN služby (VPLS). Tato technologie emuluje mnohabodové spojení na úrovni spojové vrstvy.
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Web application for subjective evaluation of streamed video
Lipa, Matúš ; Červenák, Rastislav (oponent) ; Kováč, Dominik (vedoucí práce)
This work deals with creating web application for subjective evaluation of streamed video and parts which are necessary. Streaming techniques are described from simple classical technique to adaptive bitrate streaming techniques. This work focus on adaptive bitrate streaming technology using MPEG - DASH and editing video source with tool FFmpeg. With using JavaScript is create a player who´s able to simulate changes in the network as a change in available bandwidth. It´s possible to create scenarios under which the player selects the video playback quality. The player is placed into a complex tool for evaluation of quality of experience.
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Android aplikace pro měření uživatelské spokojenosti s mobilní datovou službou
Kunc, Jaroslav ; Povoda, Lukáš (oponent) ; Červenák, Rastislav (vedoucí práce)
Bakalářská práce se zabývá problematikou uživatelské spokojenosti s mobilní datovou službou. V práci jsou v tomto kontextu rozebrány pojmy Quality of Service, Quality of Experience a Crowdsourcing. Dále se práce soustředí na popis vývoje aplikací pro platformu android, včetně distribuce a testování aplikací. V praktické části je vytvořena aplikace pro platformu Android, předpovídající uživatelskou spokojenost s mobilní datovou službou na základě analytického modelu pro výpočet MOS (Mean Opinion Score).
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Framework pro tvorbu testů
Havelka, Jakub ; Červenák, Rastislav (oponent) ; Lattenberg, Ivo (vedoucí práce)
Tato práce se zabývá návrhem WPF aplikace určené k tvorbě, vyhodnocování a průchodu testů v prostředí .NET frameworku. Zdrojové kódy jsou psány v jazyce C# . První část práce se zabývá teoretickým popisem vývojového prostředí .NET frameworku a druhá část se věnuje praktické implementaci zadání.
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Human Activity Recognition Using Smartphone
Novák, Andrej ; Červenák, Rastislav (oponent) ; Burget, Radim (vedoucí práce)
The increase of mobile smartphones continues to grow and with it the demand for automation and use of the most offered aspects of the phone, whether in medicine (health care and surveillance) or in user applications (automatic recognition of position, etc.). As part of this work has been created the designs and implementation of the system for the recognition of human activity on the basis of data processing from sensors of smartphones, along with the determination of the optimal parameters, recovery success rate and comparison of individual evaluation. Other benefits include a draft format and displaying numerous training set consisting of real contributions and their manual evaluation. In addition to the main benefits, the software tool was created to allow the validation of the elements of the training set and acquisition of features from this set and software, that is able with the help of deep learning to train models and then test them.
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Server application to process data from a MySQL database and their interpretation
Gardian, Ján ; Zeman, Kryštof (oponent) ; Červenák, Rastislav (vedoucí práce)
Diploma thesis is about creating server application that process and interprets data from the database. Main aim of such application is able to process a large number of database requests in real-time environment. Provided database contains records of measuring download speed and quality of mobile connection via different radio technology from various providers. Those measured data are sent from users all around the world and amount of data collected is still growing. Therefore created server application can adapt to increasing size of database thanks to aggregation. This method of aggregation and use of index in database tables are further discussed in the theoretical part. Mainly putting indexes in tables produce significant acceleration of processing database requests. Final product of this thesis is an application that consist of three components: a server application running aggregation, website that interprets measured data and back-end interface providing measured data as well. Data at the website are presented in form of graphs for different countries and used radio technologies. Web address and user manual for finished applications are provided in the fourth chapter of diploma thesis. In the last part of thesis are performed various speed tests of programmed application that confirm the effectiveness of selected and described methods to accelerate work with the database.
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