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Distance meter with ESP32
Havelka, Jan ; Hanák, Pavel (referee) ; Lattenberg, Ivo (advisor)
The aim of this thesis was to implement a distance meter with two sensors (ultrasonic and laser) with an ESP32 microcontroller. Then the ability to display measured values on the display and via the web interface. The first part deals with the theory of ultrasound and laser, their use as distance meters and a summary of advantages and disadvantages. The following chapter describes the design of the distance meter with all the components that will be used. The third chapter focuses on the implementation of the distance meter. It was created wiring diagram and designed printed circuit board that handled all mutual communication between the ESP32 and other peripherals. The whole device is placed in a box in the shape of a pistol printed on a 3D printer. The next part of the work briefly describes the software of the distance meter written in the C programming language in the development environment Arduino IDE. Finally, images of the final product were inserted into the work and test measurements were performed, the result of them is written into tables, graphs and subsequently evaluated.
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Moving Objects Detection in Video Sequences
Havelka, Jan ; Ševcovic, Jiří (referee) ; Španěl, Michal (advisor)
The topic of this thesis is the recognition and detection of moving object and persons in video sequence and in the static image. Designed application uses the combination of background model for movement detection, histograms of oriented gradients method for person recognition and Lucas-Kanade method for object tracking.
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Geometrical Image Transforms
Havelka, Jan ; Švub, Miroslav (referee) ; Španěl, Michal (advisor)
This bachelor's thesis is about introducing to basics of image processing, mostly with linear image transformations and interpolation. For the purpose of the closer understanding is properly to implement some basic geometrical image transformations and some different interpolation methods.
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Temporal changes in bird communities at the landscape level in Třeboň basin
Havelka, Jan ; Sedláček, Ondřej (advisor) ; Reif, Jiří (referee)
Population trends of birds are usually studied mainly on large national and continental scales or, on the contrary, quite locally. In an attempt to link these spatial scales, we repeated a quantitative survey of bird communities in the Třeboň Protected Area twenty years later (between 2001 and 2021). Bird counts were conducted during the breeding season on a fifty- kilometre transect (128 count points) intersecting a diverse range of habitats. We found declines in long-distance migrants and insectivorous birds compared to more stable or slightly increasing populations of resident species. Consistent with known trends, we also observed declines in populations of species tied to agricultural landscapes. Deviations from the well described trends by JPSP and PECBMS relate more to individual species characteristics. For example, we observed increases in populations of otherwise declining House Sparrow (Passer domesticus) and Field Sparrow (Passer montanus), or nationally stable Eurasian Siskin (Spinus spinus). Using detailed mapping of habitat and vegetation changes and other ecological characteristics of individual species, we have attempted to explain these general and site-specific changes in bird abundance and population trends. We were also interested in the manifestations of the generally...
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Early Short Stories of Yoshiya Nobuko
Havelka, Jan ; Tirala, Martin (advisor) ; Weber, Michael (referee)
This bachelor thesis is concerned with the early short stories by writer Yoshiya Nobuko from the collection titled Hana monogatari. First, I introduce author's life and work in general, together with historical context. In the next part, I list the methodological base which will be used to study selected short stories in the final part.
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Zbyněk Havlíček - Reflection of Work and Personality
Havelka, Jan ; Wiendl, Jan (advisor) ; Heczková, Libuše (referee)
The first part of my thesis will be about poet Zbyněk Havlíček's life and work. The work is mostly based on his heritage which is deposit in LA PNP in Prague in Strahov. The first chapter will describe the poet's personality in the view of his mother Marie and in the other part Havlíček's friends - Robert Kalivoda, Vratislav Effenberger and Josef Vyskočil - will comment his life. The second chapter will talk primarily about Havlíček's interpretation of surrealism. In this chapter I will also mention Havlíček's perception of the greatest surrealist André Breton. The last chapter will shortly introduce Zbyněk Havlíček 's poetics. The second part of the thesis will offer collection of his heritage (printed matters, manuscripts, correspondence) which is deposited in LA PNP in Prague in Strahov.
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Structural Analysis of the Book of Jonah
Havelka, Jan ; Pehal, Martin (advisor) ; Antalík, Dalibor (referee)
In this bachelor thesis I try to analyse the Book of Jonah by means of two methods of structural analysis - version of structural analysis developed by Terence Turner and Mary Douglas' model of ring composition. I proceed from characterization of the Book of Jonah, its text, and its characters. Then I summarize frames of research and some attempts for structural analysis. In the end I offer my own analyses and interpretations. The main thesis of my text is the assertion that the Book of Jonah on many levels connects otherwise discontinuous categories and that by doing so it opens new ways of handling them. Turnerian method helps us recognize several oppositions that the narrative deals with (e.g., relations between Jews and non- Jews, God as JHVH and as Elohim or man and animal). Model of ring composition reveals a central position of a theme of sacrifice. Further I offer some suggestions in what direction the interpretation might be led on. I summarize almost forgotten text of J. Lindon, which interestingly coincides with my own conclusions. By adding the material aspects, I suggest that it would be possible to connect otherwise discontinuous readings. I also use some theory of sacrifice and I try to demonstrate that it is precisely the notion of sacrifice as a mechanism for discerning human and non-human...
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Distance meter with ESP32
Havelka, Jan ; Hanák, Pavel (referee) ; Lattenberg, Ivo (advisor)
The aim of this thesis was to implement a distance meter with two sensors (ultrasonic and laser) with an ESP32 microcontroller. Then the ability to display measured values on the display and via the web interface. The first part deals with the theory of ultrasound and laser, their use as distance meters and a summary of advantages and disadvantages. The following chapter describes the design of the distance meter with all the components that will be used. The third chapter focuses on the implementation of the distance meter. It was created wiring diagram and designed printed circuit board that handled all mutual communication between the ESP32 and other peripherals. The whole device is placed in a box in the shape of a pistol printed on a 3D printer. The next part of the work briefly describes the software of the distance meter written in the C programming language in the development environment Arduino IDE. Finally, images of the final product were inserted into the work and test measurements were performed, the result of them is written into tables, graphs and subsequently evaluated.
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Spatial activity of birds and methods of its continuous monitoring
Havelka, Jan ; Sedláček, Ondřej (advisor) ; Kauzál, Ondřej (referee)
The aim of this work was to collect current knowledge of avian spatial aktivity focusing to its internal structure, using modern telemetry devices which allows continuous monitoring of small animal species. In the light of these new methods, avian home ranges seem to be more dynamic structures, changing during diurnal and nocturnal acitvities, breeding cycle, age, sex and social statut of a bird. Thanks to detailed radiotelemetry we can observe even secretive animal behaviour and its characteristics in three dimensions. Continual monitoring allows us to study migration in a detailed way, its influence to other parts of their annual cycle and to asses migration connectivity. In future these new information should be used for targeted conservation of endangered species.
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Municipality of Hradčany in Podještědí in the story of contemporary history
Havelka, Jan ; Beneš, Zdeněk (advisor) ; Doležalová, Eva (referee)
This master's thesis follows the author's previous bachelor thesis Village Hradčany in Podještědí at Contemporary History 1914 -1948. Using terminology and methods of regional history and microhistory it accents exploring contemporary history of whole commune and municipality Hradčany with all of its historical villages. It will deal comprehensively with cultural-historical and political-historical problems and phenomena of the of the second half of the 20th century, beginning with the communist rise of power in 1948 , continuing by demise of traditional rural economy in the fifties. But it will also mention the extinction of commune Hradčany itself and its connecting to the bigger commune of socialist type in seventies and developement of socialist rural society. Due to comparing the local archive sources with sources from other surrounding settlements the work should produce a synthetical historical source, which could be taken as a general picture of history of settlements in the region. The whole work is based primarily on archive and oral-history research, interviews with the oldest settlers, collection of photographic sources and written documents as memories.
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