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Geoinformatical modelling of the precipitation anomalies in Central Europe
Kafka, Tomáš ; Kastner, Jiří (advisor) ; Štych, Přemysl (referee)
The topic of this work is the methodological assessment of spatial variability in precipitation anomalies in central Europe using the tools of geographic information systems (GIS). Various on-line data sources for studied area are presented and compared each other in terms of their spatial information. For a model analysis for the period 1950 - 2006 was chosen dataset Ensembles Gridded observational dataset (E-Obs) in the spatial resolution of approximately 25 x 25 km. This data set is stored in a multidimenzional raster format NetCDF, which is in the work presented in detail. This way of storing data for geographical analysis are supported by desktop GIS software - ESRI ArcGIS, and to work with NetCDF data E-Obs in it's module ArcMap is developed a set of separate functions (toolbox). With the use of these instruments was from E-Obs dataset extracted several time series, related to the reference subareas. For precipitation's anomalies are considered in these series events indicated the extreme daily precipitation total, or long-term number of consecutive days with continuous rainfall, or long-term period without rainfall. Acording to intensities or length of precipitation totals and affected areas are selected most extreme episodes, which are modeled in GIS. It is presented the spatial evaluation...
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Designing data model concept for management and organization at the sphere of logistic system
Schubert, Jiří ; Štych, Přemysl (advisor) ; Grill, Stanislav (referee)
This thesis is divided into two thematic parts. The first one targets geodatabes design process. The second section of thesis contains application of graph algorithms over the final data model. The goal of the first section is to design a data model. In the first step of data modeling process all the available data information is organized at the conceptual data model. On grounds of conceptual data model is built-up logical data model. Logical scheme is transformed to physical design of personal geodatabase. Final data model design follows all data modeling rules through the data model process. The goal of second section of this thesis is to realize graph algorithms over the data model. The application of graph algorithms over the network contributes to efficiency of organization and management at the sphare of logistic system. These algorithms will apply through ESRI extension Network Analyst. Functionality of data model will be verified on the basis of this part. Keywords: Geodatabase design, Network analyse Supervisor: Mgr. Přemysl Štych, Ph.D.
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