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Censorship in the Internet
Urban, Miroslav ; Rychlý, Marek (referee) ; Očenášek, Pavel (advisor)
This master's thesis deals with the issue of censorship in the internet. Specifically, it describes technical means for censorship and methods of checking on existing projects. There are also presented various alternatives of circumvention censorship, which allow to access blocked information via the internet. Finally, it describes a system that allows practical verification of censorship in the People's republic of China. The results obtained with this system are thoroughly described and discussed.
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Censorship in the Internet
Urban, Miroslav ; Rychlý, Marek (referee) ; Očenášek, Pavel (advisor)
This master's thesis deals with the issue of censorship in the internet. Specifically, it describes technical means for censorship and methods of checking on existing projects. There are also presented various alternatives of circumvention censorship, which allow to access blocked information via the internet. Finally, it describes a system that allows practical verification of censorship in the People's republic of China. The results obtained with this system are thoroughly described and discussed.
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Surveying of the \kur{I. glandulifera} and \kur{I. parviflora} occurrence on the chosen section of Želivka river.
URBAN, Miroslav
The aim of the study was to write a review of research literature on the invasion and in parallel to carry out research work on the subject myself. In the study I chose to focus two species of the genus Impatiens, namely I. glandulifera and I. parviflora. Then I chose a 7 km long stretch of the river Želivka in the Czech-Bohemian highlands to study and survey the population of these two species and plant association. Consequently I focused my study on the river biotope and the role of invasive species in it. It is known, that I. glandulifera and I. parviflora are invasive species which tends to cause disruption to native biotopes. The former forms homogenous arrays near river banks, the latter forms this arrays in forests. In my study I examined the following questions: a) Do river and brook plant association differ in species? b) Which species are correlated with I. glandulifera and I. parviflora and which composition species occur most frequently with the subject species? c) Have different level of shading any impact on species composition? I tested these hypotheses using Statistica 8 (Statsoft Inc. 2007) and CANOCO (ter Braak and Šmilauer 2002) programs. The conclusion is that river and brook plant association differ in species composition. River plant association is lower in plant diversity (Shannon-Wiener index is 0,7; Z = -2,82208, p = 0,004772). Species correlated with I. glandulifera and I. parviflora are detailed on Fig. 7., 8., 9., and 12. The last finding was that different level of shading have impact on species composition in river and brook plant association (Z - Tab. 6, p = 0,0002).
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