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Soil erosion risk analysis in Sidama Region, southern Ethiopia
Bizunhe, Getie Balkie ; Martínek, Karel (advisor) ; Hroch, Tomáš (referee)
Soil erosion is one of the most important environmental issues in Ethiopia. Studies on erosional processes and soil loss rates can provide insight into the landscape evolution, climate change, and human activities, as well as on land degradation risk. The soil coverage of the Sidama Region study area, Main Ethiopian Rift, is characterized by Major Reference Soil Groups as follows: Luvisols, Cambisols, Nitisols, Vertisols, Andosols, Fluvisols, Regosols, and Leptosols. Cambisols and Luvisols are more susceptible to erosion. Revised Universal Soil Loss Equation (RUSLE) is most developed and recently widely used algorithm which was used to map and estimate the spatial distribution of soil erosion rates in the study area. Two rainfall datasets and three soil structure datasets were tested for reliability. The resulting 6 RUSLE calculations were validated by field mapped polygons in selected areas. It showed that most reliable input datasets are new more complete rainfall data and soil structure data derived from field mapping and sample analysis. The most susceptible areas of soil loss are mapped and the mean soil loss rate in the study area is 28 t/ha/yr. The mean annual soil loss of Sidama study area is above the tolerable mean soil loss (18 t/ha/yr for Ethiopian highlands). The Revised Universal Soil Loss...
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Utilising satellite imagery for geological mapping and structural analysis
Sokolová, Anna ; Lexa, Ondrej (advisor) ; Martínek, Karel (referee)
The use of remote sensing data is becoming very important in Earth sciences. Satellite images are invaluable for studying hardly reachable places on Earth and they can significantly help increase the efficiency of work in areas with existing field data . In arid areas where rocks are exposed and directly visible at the surface, a lithology contacts mapping can be done based on satellite images. An overview of the possibilities of processing multispectral images is included in the theoretical part of this thesis, as well as a description of previously known methods for performing structural analysis based on remote sensing data. As the main part of this thesis, a new method for finding orientations of planar geological structures including a quality control of the input data was developed and described. This method was then applied in the Bodonchin area of the Mongolian Altai where the metamorphic foliation and pegmatite veins were analyzed. The method showed good applicability in the given area despite its limitations which are also discussed in the thesis.
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Design of a web map application for point field visualization
Thám, Václav ; Čábelka, Miroslav (advisor) ; Brůha, Lukáš (referee)
The aim of the bachelor thesis is to create a web map application in the locality of Nečtiny. Other sub- objectives are to analyze the creation of web map applications. Specifically, to analyze the commercial and non-commercial way of creating web map applications using Leaflet and ArcGIS Web AppBuilder. The theoretical part explains the basic concepts related to web cartography, WebGIS, as well as web map applications, map portals and concepts related to the topic. Furthermore, technological aspects of web maps, such as programming languages, are introduced. In the next chapter, tools for creating web map applications are introduced. Then the criteria that the application should meet are set out. In the practical part, an evaluation of the different paths for creating web map applications is then made based on the criteria. This is followed by the key part of this work, namely the design of the web map application and then its actual creation using both commercial and freely available software and tools. The output of the work are two applications for the locality of Nečtiny. One created using the Leaflet JavaScript library and the other using Esri technologies such as ArcGIS Pro, ArcGIS Online and ArcGIS Web AppBuilder.
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Pasportizace budov JČU pomocí CityEngine s využitím bezpilotních technologií
SMRŽ, Pavel
The aim of this work is to create 3D model of the buildings of the University of South Bohemia and its surroundings in the ArcGIS CityEngine program. For the given area, the roofs and facades of the buildings owned by the University of South Bohemia were photographed using the DJI Phantom 4 Pro drone. The images served as textures for the appearance of individual buildings in the created model. The work is divided into two parts. The first part includes a literature review and is theoretical introduction to the topic of passporting, spatial planning, unmanned aerial vehicles and 3D modeling. The second part describes used methods and the steps to the created building model in CityEngine.
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ALS application in the landscape protection of protected heritage zone in Kremnica
Miňo,Martin ; Dědič, Peter ; Flórová, Mária ; Lieskovský, Tibor
Kremnica was an important mining town in the kingdom. Because of the gold mining it has become since the Middle Ages the seat of the royal mint, which works until today. The mint is the last of the working components with the exception of minor mining in the Andrej shaft upon which the economy and the importance of the town were built. The remnants of the mining activities went through the process of natural succession and blended into the wooded landscape. Despite the area is a protected heritage zone since 1999 its valuable landscape components were not sufficiently known and protected because of broken topography and natural succession. It became visible among others in the way the border of the heritage zone was established. In several places it leaves valuable relicts without protection. Slovakia's landscape is gradually airborne laser scanned (ALS). The source data allow to create a digital surface model (DMP) in very high resolution, which is 4 times higher than most of the commonly available data. DMP is visualized by a specialized workflow highlighting relics of cultural heritage. Full-area ALS of Slovak landscape came just when the regulations of the protected heritage zone needed to be updated. This facilitated the configuration of a new assessment approach for this site using a combination of LLS interpretation, historical maps and field surveys. For presentation and practical use of state administration a practical GIS model was created and an interactive 3D model of the area is being prepared as an important tool mainly for consideration of new building inputs in the protected zone.
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Interactive learning models for virtual reality
ŠESTÁK, Stanislav
The bachelor's thesis is devoted to the connection of virtual reality and the teaching of this technology in primary schools. The main goal of this work is the creation of three models with methodical creation procedures for teachers, familiarization with the environment of applications for creating virtual reality and applications for content creation. The theoretical work focuses on the relationship between virtual reality and the school environment (use in schools, etc.), further evaluates selected applications from the point of view of use in teaching and compares them with each other. The practical part of the thesis describes the process of creating three models, for which two different creation approaches were used. The first approach was to create a model using 3D scanning, and the second was to work with GIS-type data and edit it in Blender. The models and methodological procedures will be published under an open license. The work procedure and the use of models is applied (tested) in the framework of a sample teaching lesson at a primary school.
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Story maps and their use in tourism
JANOTA, Ondřej
The bachelor thesis deals with the modern tool Story maps, which is part of the most widely used geographic software ArcGIS online, and its use in tourism. The thesis describes the process of creating and the structure of story maps. The output of the thesis is 6 story maps, which are used by the company Czech bike tours s.r.o. during its multi-day cycling trips in the Czech Republic.
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