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Does phylogenetic proximity positively correlates with the likelihood of an evolutionary origin of mimicry?
Kováčová, Katarína ; Kleisner, Karel (advisor) ; Raška, Jan (referee)
Mimicry represents a diverse group of similarities, which belongs to the phenomena of evolutionary biology. Even though mimicry is often interpreted as a convincing exam- ple of natural selection, it is necessary to consider the morphological and organizational processes that are responsible for the formation of organisms. In our work, we tested the hypothesis that mimicry occurs more frequently among insect genus that are phylogenet- ically closer than those that are phylogenetically more distant. To elaborate the work, we used 112 genus from the Insecta and Arachnida classes. The hypothesis was tested glob- ally, continentally and at the order level. Our hypothesis has not been refuted in Central and South America, Asia and Australia. At the order level, it was not contradicted in the order of Lepidoptera. We hypothesize that the explanation can be deduced from radical phenotypic changes that would ultimately disadvantage the given organism. 1
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System for finding duplicate recordings based on audio information
Švejcar, Michael ; Miklánek, Štěpán (referee) ; Ištvánek, Matěj (advisor)
This diploma thesis discusses different methods of detecting duplicates in a music file database. The problem at hand is that files containing the same recording may differ in sound quality, applause at the end of a performance and other such parameters. The aim of this thesis is to design and implement a system that identifies duplicate recordings and provides an output file for the comparison. The system needs to not be affected by the mentioned parameters but precise enough to prevent matching non-identical recordings. The system is realized using the Python programming language, freely available libraries for computing chroma features, Image Hashing technique and multiple variants of the dynamic time warping algorithm. Three comparison methods were implemented in the system, differing in precision and computation complexity. The methods were then tested on a prepared dataset and four preset precision options were created. The final system seems very precise and insusceptible to detecting recordings that are very similar but not identical as duplicates, for example in case of different interpretations of the same musical piece.
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Visual experince as example and pattern in relation to the expansion and influence into human life
Nohejl, Jiří ; Czumalo, Vladimír (advisor) ; Vojtěchovský, Miroslav (referee)
The main theme of this dissertation is to define an image as a visual experience. The human interaction is described by the author himself as a perception of the image, which serves as an information unit that could be presented as a possibility, example and pattern for the individual. There is an emphasis on the process of perception itself and on the way of interaction of an individual emphasizing the context of social learning and imitation in this text. The analysis of the principles of this interaction leading into introduction of the partial interactive models covering these processes is formed by the essential plane. The structure of the thesis is divided into ten main chapters in which the author tries to introduce a category of perception, a definition of the image and imitation as a tool of cultural transmission, presentation of the units of this transmission, the process of the interaction itself and analogous example of the fundamental role that a person in this interaction holds. There are also three analogies of these roles, which refer to the anthropological universal interaction describing the man as a gatherer and hunter. Their main purpose is to illustrate the form of a human experience better. Finally, there are reflections on the topic above. The possibilities and results, which...
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God's Image in Gregory of Nyssa
Marunová, Magdalena ; Karfík, Filip (advisor) ; Bartoň, Josef (referee) ; Dus, Jan (referee)
The aim of this work is to introduce Gregory of Nyssa's doctrine of man as the image of God, based especially on his work Περ κατασκευ ς νθρώπουὶ ῆ ἀ (De hominis opificio). In his work Gregory created quite a systematic anthropological treatise based on Stoic sources, Biblical interpretations inspired by Philo of Alexandria and Origen, as well as on ancient medicine. In contrast to the ancient philosophical school views concerning human being, Gregory refuses the parallel of man as a small world and says that the dignity of man consists not in being similar to the created world, but to the Creator. There are many attributes that constitute human similarity to God, but especially due to the incomprehensibility man is the image of God. The incomprehensibility consists in human mind (νο ςῦ ) in which the human likeness to God can most apparently be recognized. It cannot be placed anywhere in the body and the connection between mind and body is, according to Gregory, unspeakable: the mind does not reside in any particular part of the body, but yet it acts in and is influenced by the whole body. The image of God is the whole mankind, from the first up to the last created human being. When the planned number of souls is completed, the time and everything that happens in time will come to an end. In the...
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Comparison of Tree Edit Distance Algorithms
Ivkin, Egor ; Nečaský, Martin (advisor) ; Lokoč, Jakub (referee)
The aim of this thesis is the comparison of the Tree Edit Distance methods, in the context of detecting structural similarity between two XML Schema documents. The methods search the minimum number of edit operations leading from one tree to another. We have analysed and implemented a wide range of the existing tree edit distance approaches. It is important to understand that the distance computed by the algorithms is affected by the set of used edit operations, therefore the strength in detecting XML Schema similarity differs in each approach. The first part of this work contains the description of the used approaches and necessary notations. The second part provides implementation details and analysis of the described methods, which consists of theoretical comparison and empirical evaluation on real and synthetic xml data. The resulting implementation is available in the form of Java SE application.
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Identification and characterization of malicious behavior in behavioral graphs
Varga, Adam ; Burget, Radim (referee) ; Hajný, Jan (advisor)
Za posledné roky je zaznamenaný nárast prác zahrňujúcich komplexnú detekciu malvéru. Pre potreby zachytenia správania je často vhodné pouziť formát grafov. To je prípad antivírusového programu Avast, ktorého behaviorálny štít deteguje škodlivé správanie a ukladá ich vo forme grafov. Keďže sa jedná o proprietárne riešenie a Avast antivirus pracuje s vlastnou sadou charakterizovaného správania bolo nutné navrhnúť vlastnú metódu detekcie, ktorá bude postavená nad týmito grafmi správania. Táto práca analyzuje grafy správania škodlivého softvéru zachytené behavioralnym štítom antivírusového programu Avast pre proces hlbšej detekcie škodlivého softvéru. Detekcia škodlivého správania sa začína analýzou a abstrakciou vzorcov z grafu správania. Izolované vzory môžu efektívnejšie identifikovať dynamicky sa meniaci malware. Grafy správania sú uložené v databáze grafov Neo4j a každý deň sú zachytené tisíce z nich. Cieľom tejto práce bolo navrhnúť algoritmus na identifikáciu správania škodlivého softvéru s dôrazom na rýchlosť skenovania a jasnosť identifikovaných vzorcov správania. Identifikácia škodlivého správania spočíva v nájdení najdôležitejších vlastností natrénovaných klasifikátorov a následnej extrakcie podgrafu pozostávajúceho iba z týchto dôležitých vlastností uzlov a vzťahov medzi nimi. Následne je navrhnuté pravidlo pre hodnotenie extrahovaného podgrafu. Diplomová práca prebehla v spolupráci so spoločnosťou Avast Software s.r.o.
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Visual experince as example and pattern in relation to the expansion and influence into human life
Nohejl, Jiří ; Wittlich, Filip (referee)
The main theme of this dissertation is to define an image as a visual experience. The human interaction is described by the author himself as a perception of the image, which serves as an information unit that could be presented as a possibility, example and pattern for the individual. There is an emphasis on the process of perception itself and on the way of interaction of an individual emphasizing the context of social learning and imitation in this text. The analysis of the principles of this interaction leading into introduction of the partial interactive models covering these processes is formed by the essential plane. The structure of the thesis is divided into ten main chapters in which the author tries to introduce a category of perception, a definition of the image and imitation as a tool of cultural transmission, presentation of the units of this transmission, the process of the interaction itself and analogous example of the fundamental role that a person in this interaction holds. There are also three analogies of these roles, which refer to the anthropological universal interaction describing the man as a gatherer and hunter. Their main purpose is to illustrate the form of a human experience better. Finally, there are reflections on the topic above. The possibilities and results, which...
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Searching for Similar 3D Models
Sálus, Ondřej ; Beran, Vítězslav (referee) ; Španěl, Michal (advisor)
Goal of this paper is development of aplication for comparing of 3D models. It deals with extraction od descriptors suitable for comparing of 3D models and enables to find models similar to users query. For extraction of descriptors application uses Reeb graph method. This paper also describes usage of libraries that implements Reeb graph method and some experiments with speed and quality over pre prepared models database.
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Comparison of sitcoms "Friends" and "How I Met Your Mother"
Bartalová, Jana ; Kruml, Milan (advisor) ; Křemen, Pavel (referee)
The aim of my bachelor thesis is to compare two favorite American sitcoms Friends and How I Met Your Mother. In this work, I first mentioned the history of the TV sitcom in our country and in the world, mentioned the central plots of the two sitcoms under review, and on the sitcom Friends reflected the events associated with 9/11. The main content of this work is comparative analysis of sitcoms, in terms of characters, locations and relationships. In the end, I introduced the episodic roles of famous celebrities and summed up the idea of this work.
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Estimation and analysis of speech signal periodicity
Malucha, Jan ; Poměnková, Jitka (referee) ; Sigmund, Milan (advisor)
Theoretical part starts with a short introduction to speech signals and short time analysis method. Concept of periodicity is clarified. This is followed by analysis of the speech signal parameters - voiced/unvoiced classification, intonation and short time period similarity. Next the overview of methods used to analyze the mentioned parameters together with concepts of their algorithms is provided. These methods include ZCR, STE, HNR, ACF, NCC, AMDF and DTW. Algorithms using the methods with supporting preprocessing algorithms were programmed in MATLAB for practical part. All were tested on real speech signals and the results are discussed at the end of the thesis.
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