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Noise and artifact suppression in fMRI data based on multi-echo data and independent component analysis
Pospíšil, Jan ; Gajdoš, Martin (referee) ; Mikl, Michal (advisor)
The main task of this work is to design an algorithm for suppressing unwanted noise and artifacts in fMRI data using the analysis of independent components and multi-echo data. The theoretical part deals with the basic principles of magnetic resonance, including construction and image data processing. The practical part presents a pilot design of a method inspired by a professional publication in the Matlab software environment, where this design is subsequently tested on real fMRI data provided by the Laboratory of Multimodal and Functional Imaging, CEITEC MU.
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Implementation of the LoRaWAN Communication Technology Using the Network Simulator 3
Mašek, Petr ; Pospíšil, Jan (referee) ; Mašek, Pavel (advisor)
The diploma thesis focuses on the description of LPWAN (Low Power Wide Area Network) technologies for use in IoT (Internet of Things) communication scenarios. The theoretical part compares communication technologies operating in the license-exempt frequency band, i.e. Sigfox and LoRaWAN (Long Range Wide Area Network). Furthermore, technologies using the licensed frequency spectrum are discussed, specifically, attention is focused on NB-IoT (Narrow Band IoT). Emphasis is placed on LoRaWAN technology and the properties of the unlicensed frequency band below the 1 GHz, which is utilized by this technology. The practical part of the thesis consists of the evaluation of simulation scenarios using an integrated module in the simulation environment NS-3 (Network Simulator 3). Attention is focused mainly on the analysis of data transmission success using selected communication parameters of LoRaWAN technology. The obtained simulation outputs with a focus on mMTC (massive Machine-Type Communication) communication scenarios confirm the relationship between the number of end devices and gateways, communication distance and transmission reliability, or the limit value for the duty cycle.
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You, Roman, be mindful, a land flowing with milk and honey: The comparision of ethnocentric superiority motifs in the Aeneis, Exodus and the myth of Aztlan
Pospíšil, Jan ; Pehal, Martin (advisor) ; Antalík, Dalibor (referee)
This paper aims to compare ethnocentric motifs from the three myths of different cultures. These are: 1) The Aeneid of the Romans, 2) A story of migration from Aztlan of the Mexica, and 3) Hexateuchal tale of the jewish exodus. Ethnocentic motifs are organized into four categories named by myself: 1) Divine presence and leadership, 2) Election of the people and promise of superiority, 3) Promise of the land, and 4) The fall of the unworthy. All myths are treated in their own historico-cultural context and ethnocentric motifs are judged according to the notion of etnicity in their respective myths. As a result of my comparison I present a theory that those motifs are similar on the surface because of their great and universal potential to shape ethnic identity. Yet more importantly I emphasize their differences, which appear during a careful and contextual analyzis. These differences correspond, in my opinion, well with the conception of ethnicity and one's own superiority of every ethnic group discussed. Key words: Aeneid, Aztlan, exodus, ethnicity, ethnocentrism, comparison of myths.
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Titanium dioxide blocking layers fabricated by material printing
Lásko, Ondřej ; Pospíšil, Jan (referee) ; Dzik, Petr (advisor)
In this theses TiO2 blocking layers were fabricated using material inkjet printing and spincoating methods. These layers were then analyzed using cyclic voltammetry to find any defects and to determine the type of those defects. We found that layers of over 120 nm made using ITO glass and spincoating method had the best blocking capabilities. Blocking layers prepared using FTO glass were underperforming greatly throughout the whole experiment. We also achieved good results with material ink jet printing. The best results out of all printed samples were achieved with DPI of 635, although these layers also had problem with the electrolyte rising through microscopic pores in the layer thus changing the results.
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The Architecture of Fun
Lysenko, Mariya ; Pospíšil, Jan (referee) ; Mléčka, Jan (advisor)
Nowadays the evolution of civilization gives us the opportunity to have more and more free time and fun is taken as just like one of the opportunities how time can be used. Architecture going to be only a tool for developing and promoting business within amusement parks. But how does entertainment affect us? Do we need have fun? And what else can give a person a symbiosis of joy and architecture? The aim of this work is to analyze the problem of relations between fun and architecture and suggest a solution in a specific architectural intention.
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Emise přeplňovaného zážehového motoru
Pospíšil, Jan
This diploma thesis is focused on emissions and emissions measurements of petrol engines. At the beginning the way of emissions genesis and composition in the combustion space were explained. The following part explains the ways of measuring emissions for the petrol engine, both in Europe and in the United States. Finally legislative and homologation claims for gasoline engine, including an analysis of measured data on a roller dynamometer were described. An experiment based on measuring of power and emissions of Skoda Octavia was carried out on chassis dynamometer. The results were compared with legislative emissions requirements.
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Localization In Lorawan Technology
Pospíšil, Jan
The article deals with the topic of localization in LoRaWAN (tm) network with the selection of suitable position estimation method which is TDoA. There are also described the hardware requirements for applying that method. The second part focuses on how to implement the TDoA algorithm with subsequent simulation of position estimation error.
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Focused eletron beam induced deposition
Juřík, Karel ; Zmeškal, Oldřich (referee) ; Pospíšil, Jan (advisor)
Within this work, a set of depositions induced by focused electron beam was prepared. The depositions were prepared in the presence of water vapours from trimethyl(methylcyclopentadienyl)platinum(IV) precursor. The dependence of prepared materials purity on beam accelerating voltage and water vapour pressure was measured. The best platinum content was achieved at (27,2 ± 0,4) at. %, with beam accelerating voltage 5 kV, beam current 1600 pA and water vapour pressure 100 Pa. Due to subsequent long-term exposure to light, air humidity and air oxygen, the platinum content was increased to (39,2 ± 2,1) at. %.
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