This thesis attempts to chart the development of a Jamaican musical form known as dub. This development is considered primarily in terms of the island's encounter with a series of new playback, amplification, recording, and sound treatment technologies. Section I focuses on the formation of the Jamaican sound system (a network of powerful mobile discos) and its pivotal role in the birth of a fertile domestic record industry. Section II extends the investigation to the Jamaican recording studio and record industry. What distinguishes this work from others on Jamaican dub is its emphasis on technology, and theories of technology, within a geo-political framework. In Section I, this emphasis is most notably informed by the work of Harold Innis, Karl Marx and Lewis Mumford, with Marshall McLuhan and Walter Benjamin becoming more prominent in Section II. Key technologies in this analysis include mechanization (mechanical reproducibility), the Williamson amplification circuit, the House of Joy speaker, the dub plate (acetate phonograph) and vinyl record, twin-turntables and the microphone, the magnetic tape recorder, and perhaps most importantly, the multi-track recorder and interface (the multi-track mixing-board).

The aim of this thesis was to inventory the natural regeneration of pedunculate oak on floodplain sites (FE Židlochovice, forest district Židlochovice), analysis of the conditions where the regeneration of oak under mother canopy shows a determination of potential natural regeneration of oak on the FE Židlochovice. It had been inventoried 8 (7.96 hectares) stands. These forests occupy approximately 0.24 % of the total area of interest (3355 ha). From this number fulfills the criteria ensuring the 5 forest stands (6.02 ha). The determining factor for regeneration under canopy of pedunculate oak is gap fraction (GFr) and the limiting factors are the state of the soil cover and damages by game. Natural oak regeneration can be achieved only at large-scale regeneration cuttings, but also in smaller areas such as border cutting and successfully grow it to established state.

This thesis deals with study of the sprouting of sessile oak in the experimental area Soběšice. This area was established within the frame of project TARMAG. The Sprouting was monitored in two years -- 2011 and 2012, so directly after the first vegetation period after timber harvesting in the area. Data found by measuring height and thickness of sprouts and also by diameter of stump and number of sprouts (for each stump) was used for rating of sprouting ability. For statistical data evolution was used program Microsoft Office Excel. In the context of this thesis to determined biomass production (dry weight of organic wood matter) were also removed all the sprouts of the selected tree stumps of the research areas. It was found, that in the first years of oak growth hasn't got substantial impact on the oak sprouting the diameter of stump or intensity of timber harvesting. Furthermore, it was found that the total biomass of tree stump could be with some accuracy to determine the characteristics of a selected number of sprouts.

This diploma thesis deals with fruitfulness and stand structure of Pedunculate oak mature stands (Quercus robur L.) in the Protected Landscape Area Litovelské Pomoraví. Aim of this thesis is to determine variability in stand structure and fruitfulness. A partial aim was to analyse a litter distribution under the single oak trees. In total 4 groups of stands and 3 single oak trees were analysed. Stand structure was detected by using Field Map technology on transects. This survey was representation of individual tree species, standing volume inventory, tree height, tree crown height, then positions of individual trees and their crown projection. Thereafter the indices of aggregation and competition were detected. Fruitfulness was studied in years 2013 and 2014 on plots about 1 m2 located in the center transect at intervals of 5 m. The seed containers were used as a control. Representation of oak according to the number spread over a 21 % to 38 %, according to breast-height circular base from 35% to 66 % and according to standing volume inventory from 40 % to 73 %. The fruitfull intensity in 2013 varied from 0 to 65 pcs and in 2014 from 0 to 31 pcs. The highest harvest was in stand with the largest number of oak trees. The abundance of acorns under the single oak trees from the bottom of the trunk to the edge of the crown was possible to describe by linear trend y=25,3926-0,0344×x in 2013 and y=2,2206-0,0047×x in 2014.

This dissertation thesis deals with ability of secondary crown formation after opening a canopy and secondary crown utilization in landscape architecture. The ability of different taxa of trees to form a secondary crown after opening a canopy is genetically conditioned and influenced by the specific terms of habitat, tree age, physiological state of the individual and the specific characteristics of the individual. As a model plant for this dissertation thesis was chosen a representative of the Quercus L. genus which is very frequently used in landscape architecture. Specifically, Quercus cerris L. taxon was chosen which is grown in forest stands of Lednice-Valtice Cultural Landscape as a monoculture. Field research was conducted in forest stand edges of Forest management unit Židlochovice, namely in forest district Valtice. In this forest district were found suitable sites that meet the condition of chosen evaluation methodology, allowing comparable statistical evaluation. Enough suitable forest stand edges were found that were selected for the experiment. To the topic of secondary crown formation after opening a canopy and practical utilization of secondary crown is paid only little attention in specialized publications and in both basic and applied research. This thesis brings knowledge that can significantly contribute to the development and importance of field Landscape architecture in contemporary society. The thesis brings a lot of new information and relationships that occur during tree crown regeneration when opening a canopy. These findings can be used for example during the regeneration of untended objects of garden art monuments and other objects of landscape architecture. The results may also help in the conversion of forest stands to different objects of landscape architecture both in urban and rural settlements. The results allow modeling the development of woody plant vegetation elements in these objects. It is clear that arbitrary regenerative ability of secondary crown formation and thus the replacement of the primary crown is not sufficient but it is always necessary to respond on this ability of regeneration by various means of tree care measures so that the whole intention reaches the optimal result. The results indicate that primary or secondary woody plant vegetation element opening a canopy is able to regenerate in order to increase its landscaping value or to increase its dendrological potential of the compound vegetation element. Knowledge can also be used for regeneration of trees on the newly created forest stand edges, historical parks or other compound woody plant vegetation elements.

The thesis follows the bachelor thesis on comparison of morphological and economic parameters of various types of seedlings, which resulted in the planting of containerized and bare root seedlings of the European beech (Fagus sylvativa Linne) and the English oak (Quercus robur Linnaeus) in a forest regeneration in September 2011 and April 2012. The measurement of the height and thickness of the root neck of the seedlings was carried out on designated plots in March 2015. I also investigated possible mortality from the afforestation inspection in July 2012. Furthermore, 154 seedlings, 84 containerized seedlings a 70 bare root seedlings, in order to evalutate the development of the root system, its possible deformation and subsequently detection of the volume by using xylometric method. The data collected in the field were processed into tables and compared with the results observed in the bachelor thesis. The average figures for the height, the thickness of the root neck and the volume of the root system showed almost identical development of bare root and containerized seedlings in the forest cover, even though the figures of individual seedlings were highly variable. When reviewing the development of the root system, I found unacceptable deformation of the main taproot at 25% containerized seedlings and 20% bare root seedlings. The remaining seedlings were without deformation or with acceptable deformation of the taproot (wavy taproot, unbalanced taproot with the axis in the above-ground part, an outgrowth). It was discovered that containerized seedlings were more easily removable from the ground, the seedlings were not sufficiently fixed in the ground and its root system was in some cases less developed than it was with bare root seedlings. This may be influenced by several factors, e.g. the influence of richness of the root system on fine roots, the obstruction of development of the root system by cementing the surrounding soil when using the slit method. The bare root seedlings, the English oak in particular, showed root development to a greater depth, which is very important not only for sealing but also as an important factor in the drought season and extreme summer temperatures when there is rapid exhaustion of the moisture in the upper horizon of the soil due to the vapor. Unfortunately, it was not possible to verify these findings in a larger sample size, as there had been major damage of the forest.

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