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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.
211

Analýza vývoje vodovodní sítě a využití vodních zdrojů v Hradci Králové a okolí / Analysis of the water network development and utilization of water resources in and around Hradec Králové

Barborik, Lukáš January 2017 (has links)
This thesis analyzes the use of water resources, development of water supply and water management structures since the 60s of the 20th century to the present day. Background materials provided on request by Vodovody a kanalizace Hradec Králové a.s. from their archives. The materials consist of text and map outputs from master plans of water supply network. For the analysis were created maps of water network in the years 1973, 1981, 1994 and 2010, whose underlying maps are digitized material from the period. As graphical output was used ArcMap program. The analysis assesses the development and future of drinking water resources, water network and water management structures and can serve as a starting point for a more detailed examination of historical events and developments in and around Hradec Králové.
212

Optimální digitální model terénu pro erozní analýzy / Optimal digital terrain model for erosion analysis

Středová, Kamila January 2017 (has links)
The thesis deals with the question of using available sources of elevation data for the evaluation of topographic factor in estimating the amount of water erosion in the area. Work compares the results with consideration to the origin of the data, the accuracy and resolution of the digital terrain model, which is interpolated from the source data. The calculation of topographic factor in ArcGIS will be confronted with the results of the Universal Soil Loss Equation (USLE). The frequency of compliance will tell us which data source and digital terrain model resolution is the most suitable for determining the topographic factor.
213

Disperzní a letová aktivita pakomárů stojatých vod (Diptera: Chironomidae)

VEBROVÁ, Lucie January 2017 (has links)
I first review the significance of dispersal for individuals and populations including the role of the most significant environmental drivers on separate phases of dispersal. Emphasis is put on aquatic insects inhabiting small standing waters. The following manuscript summarizes a quantitative study of diel and seasonal flight patterns of adult Chironomidae in the Cep II sandpit in southern Bohemia. It provides one of the first comprehensive treatments of the effect of weather conditions and seasonality on the flight activity of adult Chironomidae, phenology of most common species and differences between terrestrial and aquatic species.
214

Sukcese vodní a mokřadní vegetace na pískovnách

MÜLLEROVÁ, Anna January 2017 (has links)
Vegetation sampling was carried out to determine processes of succession of aquatic and wetland plant species. Different stages of wetland and aquatic vegetation were analyzed in sand pits in the Třeboňsko Protected Landscape Area in the Czech Republic. Moreover different sizes of phytosociologial relevés of aquatic vegetation were analyzed to determine sufficient size for detection of successional changes.
215

Zpracování revitalizační studie vodního toku / study Preparation of water course revitalization

NEUBAUER, David January 2017 (has links)
This thesis deals with the problems associated with the revitalization of watercourses. For a processing of study watercourse revitalization was selected basin of Dobechov stream. The proposal of the measures should contribute to the improvement of the water regime and ecological stability in the area. The work contains theoretical and practical part. In theory, the reader finds the concepts associated with the adjustment of watercourses and revitalization measures, where they are individually described. In the practical part is characterized the area of interest with the proposal for the revitalization of the watercourse. Finally, it evaluated the current status of stream and benefits of the proposed measures. Part of the work is also a list of literature which was used, photographs of the area of interest and map outputs.
216

Zpracování studie revitalizace malé vodní nádrže / Preparation of small water reservoir revitalization study

KOPŘIVA, Tomáš January 2017 (has links)
This thesis deals with the problems associated with the revitalization of small water reservoirs. These water tanks are important landscape elements that have a significant impact on maintaining or increasing species diversity of the entire area. The thesis contains theoretical and practical part. In the theoretical part the reader will find the definition, classification, history, but also the typical elements description of small water reservoirs. The practical part contains a specific design example of revitalization of a small reservoir, The Gypsy pond in the cadastral region of Zahrádka by Mirkovice.
217

Hodnocení vodního stresu porostu pomocí metod dálkového průzkumu povrchu / Crop water stress assessment using remote sensing approach

ERBEN, Jiří January 2017 (has links)
The present thesis deals with evaluation of crop water stress by means of remote sensing. The first part of the research is focused on the assessment of water stress of sunflowers in a laboratory environment using spectral analysis of the reflected radiation and thermography. Leaf of suflowers temperature were evaluated and using them, the index of water stress CWSI were calculated. Reflection of leaf was evaluated in the wavelengths 350 -2500 nm. From these wavelengths spectral indexes were calculated - NDVI (Normalized difference vegetation index) which detect the presence of living green vegetation, WI (Water Index) which serve to calculate the approximate amount of water in the vegetation and RVI (simple ratio vegetation index) which determine the content of biomass or photosynthetic capacity. After that, they were compared with CWSI. Finally CWSI was compared with the spectral data, and from the resulting correlations they were apparent wavelengths, which correlated with given index more or less. The second part is focused on the assessment of water stress in terms of 4th. level catchment, specifically on catchment "Dehtáře" near Pelhřimov. There were primarily evaluated three biggest areas - fields of winter wheat, field corn and TTP.
218

Revitalizace a vliv na retenci vody v krajině / Revitalizing stream and its effect on landscape water retention

TRSKOVÁ, Martina January 2017 (has links)
The aim of this diploma thesis is to evaluate the results of the selected revitalization intention. The introductory theoretical part is generally focused on revitalization, description of its main aims and the reasons, why are revitalization works needed. The practical part is focused on characterization of selected location, in which the revitalization steps were implemented. The main content of this part are calculations volumes of areas of retention places, which resulted from revitalization and the comparison of those areas with the original landscape. Based on those results, it was confirmed that revitalization in the selected location increased the retention capacity of the original riverbed.
219

Řešení protierozní ochrany na modelovém projektu komplexní pozemkové úpravy

MURČO, Marek January 2017 (has links)
This diploma thesis is focused on antierosion protection issues used on a general landscaping model project. The first part deals with the theory of erosion, especially the water erosion, antierosion precaution and landscaping. The second part deals with practical calculation of water erosion using the Wischmeier-Smith equation. In case of exceeding the maximum annual soil loss, proper antierosion precaution is proposed.
220

Řešení protipovodňové ochrany obcí / Flood protection of municipalities

JÍLKOVÁ, Kateřina January 2017 (has links)
The thesis is focused on the issue of floods and the different types of flood protection measures that help to reduce human and material losses during floods. The thesis is divided into theoretical part where the basic concepts and possible solutions to flood control measures in the countryside and in the municipalities are defined. In the practical part there are described and assessed the examples of the flood protection measures in the selected locations. Individual measures are evaluated and compared with other flood control measures in different areas. The thesis also contains photographs depicting the true state of individual flood control measures in the area concerned, where some photographs show these measures also during floods.

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