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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Spuštění veřejnoprávního kulturního kanálu: analýza vysílání ČT art do roku 2014 / Launch of the public-service culture channel: Broadcast Analysis of ČT art untill the year 2014

Skalník, Jan January 2019 (has links)
Diploma thesis "Launch of the public-service culture channel: Broadcast analysis of ČT art until the year 2014" describes the origin and development of the channel ČT art, including an analysis of how it influenced the transformation of ČT2. This thesis, therefore, includes the programme composition of both channels monitoring the period from autumn 2013 to autumn 2014, as well as the programme composition of ČT2 from autumn 2012. This allows us to evaluate how ČT2 attended to cultural broadcasting before the launch of the new and thematically specialized channel ČT art. Moreover, the thesis tries to point out the trends taking place in television broadcasting such as digitalization, fragmentation of TV audiences and media convergence. These trends are illustrated by using specific examples from the Czech Television, as well as the theoretical foundation. The theoretical part of the thesis focuses on describing public-service media, services they provide and their roles in fulfilling the cultural needs of society. In addition, it also draws attention to examples of culturally oriented channels within Europe. The results of the analysis of programme schemes of both channels are complemented by findings from interviews with the leading employees of the Czech Television, which were not aimed to focus...
22

Zkoumání produkce podivných částic v jetech v experimentu ALICE na urychlovači LHC / Study of strange particle production in jets with the ALICE experiment at the LHC

Kučera, Vít January 2016 (has links)
Title: Study of strange particle production in jets with the ALICE experiment at the LHC Author: Vít Kučera Institute: Institute of Particle and Nuclear Physics Supervisors: RNDr. Jana Bielčíková, Ph.D., Nuclear Physics Institute of the CAS; Dr. Christian Kuhn, Institut Pluridisciplinaire Hubert CURIEN Abstract: Quark-gluon plasma is a state of matter existing under extreme energy densities and temperatures where quarks and gluons are deconfined. Complex phenomena occurring in the plasma emerge from the strong interaction of its constituents. This hot and dense strongly interacting matter can be created in ultra-relativistic heavy-ion collisions and its properties can be studied by measuring particles produced in the collisions. Partons produced in hard scatterings interact with the medium which modifies the production of particles in jets. Measurements of spectra of identified particles produced in jets represent an important tool for understanding the interplay of various hadronization mechanisms which contribute to the particle production in the medium created in heavy-ion collisions. In this thesis, we present the measurement of the pT spectra of Λ baryons and K0 S mesons produced in charged jets in central Pb-Pb collisions at the energy √ sNN = 2.76 TeV, measured in the ALICE experiment at the LHC. The...
23

Ekologie lasicovitých šelem / Ecology of mustelids in the Central European landscape

ŠÁLEK, Martin January 2009 (has links)
Ph.D. thesis is focused on different aspects of ecology of several mustelid species in the Central European landscape. Particularly, nest predation, habitat and resting sites selection, predator-prey interactions as well as impact of fragmentation and urbanization on mustelids were described in 8 published papers or manuscripts.
24

Distribuce šelem uvnitř a na okraji lesních habitatů / Distribution of carnivores inside and at the edge of forest habitats

ČERVINKA, Jaroslav January 2010 (has links)
This thesis is focused on habitat preferences of carnivores in fragmented landscape. By using the scent station method, fine-scale utilization of forest-farm edges by mammalian predators in dependence on patch size was examined. Preferences for edge structures was detected and these structures were equally utilized by carnivores in large as well as in small forest fragments. This shows that edge effect was present in all fragments regardless the patch size.
25

Uměle vytvořené migrační přechody živočichů a jejich efektivnost / Artificially created animal migration passages and their effectiveness

VAJGANTOVÁ, Miroslava January 2011 (has links)
Highways, expressway and other infrastructure have a negative impact on the surrounding population of animals. These linear structures in the landscape create impassable barriers and thus cause more or less isolated subpopulations (called barrier effect). Therefore, the newly constructed building of European highways and passages specially built for the animals, known as green bridges (ecoduct). Effectiveness of transitions is influenced by several factors (width of the bridge, the frequency of passing cars, the speed limit, etc.). This thesis deals with the efficiency of artificial crossings for wildlife and provides an overview of the results published so far.
26

Srovnání tří metod použitých při vyhodnocení schopnosti šíření semen a jejího významu pro kolonizaci opuštěných polí u druhů z čeledi Asteraceae / Comparison of three trials used for assassement of ability to disperse by wind and its importance for colonazition of abandoned fields in Asteraceae species

Vlasta, Tomáš January 2017 (has links)
Several methods are used for studying seed dispersal (seed traps, tracking individual seeds, tracking seeds coloured by fluorescent colours, etc.) However, only a few studies compared results obtained by several methods. In first part of this master thesis, I compared the three above mentioned methods used for studying seed dispersal using species from Asteraceae family. From previous research within the study area (Úštěcko), it is known that dry grassland species are able to colonize abandoned fields. Using seed dispersal data obtained within this theses, I tried to assess the role of seed dispersal on distribution of dry grassland species on abandoned fields both on local and regional scale. The results showed that dispersal curves obtained by the three methods differ significantly. This results may be due to different wind conditions during the experiments. Seed trap data show results from long-term seed dispersal influenced by highly variable wind conditions. In contrary, seed release experiments showed results based on single dispersal event under limited wind conditions. Tracking seeds coloured by fluorescent colours was shown to be not convenient for small seeds, but I can recommend this method for larger seeds. Influence of seed dispersal ability on abundance of dry grassland species on...
27

Studium využití derivatizačních reakcí pro ESI-MS analýzu obtížně ionizovatelných aryl chlorokomplexů rhenia / Study of derivatization reactions for ESI-MS analysis of hardly ionizable rhenium aryl chlorocomplexes

Vlk, Mikuláš January 2020 (has links)
Mass spectrometry with electrospray ionization is an excellent method for structural analysis of coordination compounds with outstanding sensitivity and selectivity. However, it fails to detect some low-polar rhenium complexes. This master thesis describes derivatization method of non-ionizable rhenium complexes with 1,2-dihydroxybenzene and 2,3- dihydroxytoluenene. Fragmentation mechanisms and structure of prepared complexes was studied using high resolution mass spectrometry and collision-induced dissociation (CID). Furthermore, density functional theory (DFT) computational method was used for prediction of bond cleavage based on bond lengthening.
28

Vlastnosti biotopů zodpovědné za atraktivitu vojenských cvičišť pro ptáky: případová studie z vojenského újezdu Hradiště / Habitat characteristics accounting for the attractiveness of military training areas for birds: a case study from the Hradiště military training area

Hernová, Jana January 2020 (has links)
Military areas are extraordinary biodiversity-rich due to limited economic activities and a specific way of using the areas for military training. Previous research has also revealed their positive influence on bird species diversity, this applies to endangered species in particular. However, the exact biotope characteristics attracting birds are insufficiently known. In this regard, I expected an important role of heterogeneity of the environment. The aim of the thesis was therefore: (I) to find out the difference of environmental heterogeneity between a military area (MA) and the surrounding landscape, both in a forest and a non-forest sites, (II) to find out what biotope characteristics attract birds in open landscape and (III) what characteristics attract birds in forest. Fieldwork took place in a still active MA of Hradiště and neighboring controls of Bochov and Ostrov. In total, 80 study plots were surveyed for representation of individual biotopes (39 types in total) and the number of fragments of woody vegetation. Data on bird species richness were taken from the thesis of Bušek (2015), surveyed birds at identical study plots and calculated total number of bird species and the number of endangered bird species at each plot. The open landscape of MA has, compared to the surrounding cultural...
29

Genetická diverzita a struktura populací Campanula glomerata na regionální škále v Bílých Karpatech / Genetic diversity and structure of populations of Campanula glomerata on regional scale in White Carpathians

Černá, Mariana January 2020 (has links)
Habitat fragmentation can adversely affect species populations due to reduced genetic diversity and increased population differentiation due to habitat isolation, reduced population size, and disruption of gene flow. Many species suffer from habitat fragmentation and isolation, and Campanula glomerata is a good example of a species that is noticeably declining in many places due to changes in landscape management. The question is how the model species responds to these changes and whether is the change are reflected in genetic diversity and population structure. The aim of this work is to determine the degree of genetic diversity and to reveal the genetic structure of populations of the model species C. glomerata on a small regional scale in the White Carpathians. This system will allow us to compare populations from two different regions that have been affected to varying degrees by agricultural intensification and fragmentation in the last century. It is a southwestern and northeastern part of the region, which differs from each other in the history of management in the landscape, but also in the continuity of meadows, species composition and environmental conditions. For this purpose, I developed and optimized a total of 16 usable microsatellite markers, 4 of which come from related species of...
30

Ideologizácia a fragmentácia subkultúry Skinheads / Ideologization and fragmentation of Skinhead subculture

Novotný, Jaroslav January 2015 (has links)
The master thesis titled Ideologization and fragmentation of Skinhead subculture deals with historical background of Skinhead subculture genesis and with cleavages, that determinated its ideologization and fragmentation. Simultaneously it pays close attention to analysis of various branches of the Skinhead subculture. The first chapter of the thesis builds theoretical foundations of the research. In this chapter the terms culture, subculture and counterculture are explained. Accentutation is placed on common denominators as well as on differences in the definition of these terms. The second chapter of the master thesis deals equally with historical background of Skinhead subculture genesis and with subcultures with a significant impact on the formation of the Skinhead subculture. In this chapter the attention is focused on historical facts of political development in Great Britain after The Second World War, on subcultures popular at that time and on foundation of the Skinhead subculture. The third chapter of this thesis analyzes infiltration of the political ideologies inside the subculture and the following fragmentation of Skinheads. Research in this chapter is focused on the spread of extreme right-wing elements, foundation of the racist branch of the subculture and sequentially on the reaction...

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