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Behaviour-Based Identification of Network Devices
Polák, Michael Adam ; Holkovič, Martin (referee) ; Polčák, Libor (advisor)
Táto práca sa zaoberá problematikou identifikácie sieťových zariadení na základe ich chovania v sieti. S neustále sa zvyšujúcim počtom zariadení na sieti je neustále dôležitejšia schopnosť identifikovať zariadenia z bezpečnostných dôvodov. Táto práca ďalej pojednáva o základoch počítačových sietí a metódach, ktoré boli využívané v minulosti na identifikáciu sieťových zariadení. Následne sú popísané algoritmy využívané v strojovom učení a taktiež sú popísané ich výhody i nevýhody. Nakoniec, táto práca otestuje dva tradičné algorithmy strojového učenia a navrhuje dva nové prístupy na identifikáciu sieťových zariadení. Výsledný navrhovaný algoritmus v tejto práci dosahuje 89% presnosť identifikácii sieťových zariadení na reálnej dátovej sade s viac ako 10000 zariadeniami.
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Lossless Video Compression
Polák, Michael Adam ; Polok, Lukáš (referee) ; Bařina, David (advisor)
This thesis is describing methods of lossless video compression. It also contains the description and formulas for conversions of color models suitable for lossless compression. The last theoretical part describes context compression and entropy coding with emphasis on arithmetic coding. Following the arithmetic coder is the description and details about the implemented video codec. This codec is then tested and compared with the currently used FFV1 and Huffyuv codecs. The result of this thesis is that adding the number of contexts improves the compression ratio although it does not outperform the compression ratio of FFV1, the compression ratio of Huffuyv was always outperformed.
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Neonazism in Late Socialist Czechoslovakia
Polák, Michael ; Pullmann, Michal (advisor) ; Spurný, Matěj (referee)
The aim of this bachelor thesis is to map the presence of pro-fascist movements, pro- fascist ideas and their manifestations in Czechoslovakia during the second decade of the period of normalization. The basic task of the thesis aims to discover whether the followers of Nazi and fascist values existed in Czechoslovakia in the eighties, what was the profile of the people involved, what was the main motive of inspiration in the neo-Nazi themes, whether these motives represented a symbolic protest against the establishment or carried a projection of a fascist / neo-Nazi social change, furthermore where this inspiration came from (whether the transfer of ideas from the west occurred). The thesis will therefore analyse the social profile of individuals and groups tending to neo-Nazism, their social origin, motivation for neo-Nazi activities and beliefs, and the relationship between governance structure and other social classes of the Czech and Slovak society. This research aims to contribute to a better understanding of the character of the normalisation period and the opposing groups. The general term of passive oppressed people doesn't apply to the supporters of the neo-Nazi ideology, nor would you describe them as the heroic warriors against the regime. Reaserching their specific position should...
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Street Politics. Student Protests in Prague 1962 - 1967
Polák, Michael ; Pullmann, Michal (advisor) ; Mervart, Jan (referee)
This thesis deals with the genealogy of so-called "Strahov events", i.e. the protest of students from Strahov dormitories, which took place on October 31, 1967. The key question is why seemingly an insignificant event - a power outage - led to the collapse of the university organization of the Czechoslovak Union of Youth (ČSM). The thesis analyses the 1960s through optic of street politics, and examines manifestations of the particular student collectives that preceded the Strahov protest and which set up the implicit rules on how to enter the public space and what content it should bring in and how to avoid repressive reaction in the same time. In particular, it focuses on the majáles festival marches in 1965 and 1966 and the so- called Petřín incidents - the annual May Day clashes between the Public Security forces and the youth at Petřín hill. It helps to answer related questions: how these collectives influenced the origin, course and consequences of the Strahov demonstration. In addition, the thesis focuses on the process of creation of student social movement. It examines what the students expected in the 1960s, what was the purpose of their criticism and how their criticism was influenced by the context social transformations that took place in the state-socialist Czechoslovakia in the...
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Behaviour-Based Identification of Network Devices
Polák, Michael Adam ; Holkovič, Martin (referee) ; Polčák, Libor (advisor)
Táto práca sa zaoberá problematikou identifikácie sieťových zariadení na základe ich chovania v sieti. S neustále sa zvyšujúcim počtom zariadení na sieti je neustále dôležitejšia schopnosť identifikovať zariadenia z bezpečnostných dôvodov. Táto práca ďalej pojednáva o základoch počítačových sietí a metódach, ktoré boli využívané v minulosti na identifikáciu sieťových zariadení. Následne sú popísané algoritmy využívané v strojovom učení a taktiež sú popísané ich výhody i nevýhody. Nakoniec, táto práca otestuje dva tradičné algorithmy strojového učenia a navrhuje dva nové prístupy na identifikáciu sieťových zariadení. Výsledný navrhovaný algoritmus v tejto práci dosahuje 89% presnosť identifikácii sieťových zariadení na reálnej dátovej sade s viac ako 10000 zariadeniami.
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Street Politics. Student Protests in Prague 1962 - 1967
Polák, Michael ; Pullmann, Michal (advisor) ; Mervart, Jan (referee)
This thesis deals with the genealogy of so-called "Strahov events", i.e. the protest of students from Strahov dormitories, which took place on October 31, 1967. The key question is why seemingly an insignificant event - a power outage - led to the collapse of the university organization of the Czechoslovak Union of Youth (ČSM). The thesis analyses the 1960s through optic of street politics, and examines manifestations of the particular student collectives that preceded the Strahov protest and which set up the implicit rules on how to enter the public space and what content it should bring in and how to avoid repressive reaction in the same time. In particular, it focuses on the majáles festival marches in 1965 and 1966 and the so- called Petřín incidents - the annual May Day clashes between the Public Security forces and the youth at Petřín hill. It helps to answer related questions: how these collectives influenced the origin, course and consequences of the Strahov demonstration. In addition, the thesis focuses on the process of creation of student social movement. It examines what the students expected in the 1960s, what was the purpose of their criticism and how their criticism was influenced by the context social transformations that took place in the state-socialist Czechoslovakia in the...
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Lossless Video Compression
Polák, Michael Adam ; Polok, Lukáš (referee) ; Bařina, David (advisor)
This thesis is describing methods of lossless video compression. It also contains the description and formulas for conversions of color models suitable for lossless compression. The last theoretical part describes context compression and entropy coding with emphasis on arithmetic coding. Following the arithmetic coder is the description and details about the implemented video codec. This codec is then tested and compared with the currently used FFV1 and Huffyuv codecs. The result of this thesis is that adding the number of contexts improves the compression ratio although it does not outperform the compression ratio of FFV1, the compression ratio of Huffuyv was always outperformed.
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|
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Neonazism in Late Socialist Czechoslovakia
Polák, Michael ; Pullmann, Michal (advisor) ; Spurný, Matěj (referee)
The aim of this bachelor thesis is to map the presence of pro-fascist movements, pro- fascist ideas and their manifestations in Czechoslovakia during the second decade of the period of normalization. The basic task of the thesis aims to discover whether the followers of Nazi and fascist values existed in Czechoslovakia in the eighties, what was the profile of the people involved, what was the main motive of inspiration in the neo-Nazi themes, whether these motives represented a symbolic protest against the establishment or carried a projection of a fascist / neo-Nazi social change, furthermore where this inspiration came from (whether the transfer of ideas from the west occurred). The thesis will therefore analyse the social profile of individuals and groups tending to neo-Nazism, their social origin, motivation for neo-Nazi activities and beliefs, and the relationship between governance structure and other social classes of the Czech and Slovak society. This research aims to contribute to a better understanding of the character of the normalisation period and the opposing groups. The general term of passive oppressed people doesn't apply to the supporters of the neo-Nazi ideology, nor would you describe them as the heroic warriors against the regime. Reaserching their specific position should...
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