|
|
Computer-aided method of analytic surfaces modelling
Stodola, Jakub ; Štarha, Pavel (referee) ; Martišek, Dalibor (advisor)
The first part of the thesis deals with projections of points from an Euclidean space into a plane and displaying of the resulted planar points on a computer. The second part focuses on a discretization of analytically specified surfaces. This is an approximation with network points. Due to the previous part, we are able to display them on a computer. The third part is dedicated to various types of coating fillings. Finally, the software solution is added.
|
|
|
Environmental gradients in canyon-shaped reservoirs
Stodola, Jakub ; Petrusek, Adam (advisor) ; Seďa, Jaromír (referee)
The occurrence of environmental gradients in canyon-shaped reservoirs is influenced mainly by the size of reservoir and water retention time. The reservoir must be large and deep enough for environmental gradients to occur there. In such reservoirs vertical and horizontal gradients can be found. Presence of vertical gradients in lakes is relatively common, whereas horizontal gradients abound in deep canyon reservoirs. An example is the gradient of nutrients, the quantity of which decreases in the direction from the inflow towards the dam. Vertical abiotic gradients are the same for reservoirs and lakes. These are mainly gradients of light, heat, dissolved and oxygen. Some abiotic horizontal gradients may be present in both to reservoirs and lakes. The abiotic gradients also often affect the biotic ones. For example the gradient of nutrients affects the gradient of all organisms in the reservoir. Each species living in the reservoir prefers different type of environmental conditions, which may be given by a combination of these gradients. The areas preferred by particular cladoceran species can overlap quite extensively. In the Daphnia longispina species complex, co-occurrence of parental species may result in interspecific hybridization, and possibly formation of hybrid zones. The hybrids can often...
|
|
|
Detailed taxonomic and clonal structure of the Daphnia longispina species complex on the longitudinal gradient of the Želivka Reservoir
Stodola, Jakub ; Petrusek, Adam (advisor) ; Vaníčková, Ivana (referee)
Canyon shaped reservoirs are characteristic by specific environmental horizontal gradients, so they enable existence of several species of the Daphnia longispina complex in one water body. Due to preference of distinct environmental conditions Daphnia species occurre in the different localities. The aim of my thesis was to analyze detail taxonomical and clonal structure of Daphnia longispina group by ten microsatellite markers on longitudinal gradient and compare it between two consecutive seasons. Simultaneously I received newly discovered divergent mitochondrial lineage from Želivka reservoir. It was confirmed, that the distribution of species and their hybrids in water reservoir was non-concidental and the taxonomic spatial distribution is in two consecutive seasons relatively constant. On the contrary the spatial and temporal distribution of clones was very heterogeneous. Clonal diversity in the interspecific hybrids was lower than in the coexisting parental species. This finding supports the hypothesis, that there exist reproductive barriers between parental genomes. Most of the clones were substantively variable, but several clones that occurred in both seasons in similar localities were found. It is possible that some clones are able of overwintering in hypolimnion and in the spring...
|
|
|
Detailed taxonomic and clonal structure of the Daphnia longispina species complex on the longitudinal gradient of the Želivka Reservoir
Stodola, Jakub ; Petrusek, Adam (advisor) ; Vaníčková, Ivana (referee)
Canyon shaped reservoirs are characteristic by specific environmental horizontal gradients, so they enable existence of several species of the Daphnia longispina complex in one water body. Due to preference of distinct environmental conditions Daphnia species occurre in the different localities. The aim of my thesis was to analyze detail taxonomical and clonal structure of Daphnia longispina group by ten microsatellite markers on longitudinal gradient and compare it between two consecutive seasons. Simultaneously I received newly discovered divergent mitochondrial lineage from Želivka reservoir. It was confirmed, that the distribution of species and their hybrids in water reservoir was non-concidental and the taxonomic spatial distribution is in two consecutive seasons relatively constant. On the contrary the spatial and temporal distribution of clones was very heterogeneous. Clonal diversity in the interspecific hybrids was lower than in the coexisting parental species. This finding supports the hypothesis, that there exist reproductive barriers between parental genomes. Most of the clones were substantively variable, but several clones that occurred in both seasons in similar localities were found. It is possible that some clones are able of overwintering in hypolimnion and in the spring...
|
|
|
Environmental gradients in canyon-shaped reservoirs
Stodola, Jakub ; Petrusek, Adam (advisor) ; Seďa, Jaromír (referee)
The occurrence of environmental gradients in canyon-shaped reservoirs is influenced mainly by the size of reservoir and water retention time. The reservoir must be large and deep enough for environmental gradients to occur there. In such reservoirs vertical and horizontal gradients can be found. Presence of vertical gradients in lakes is relatively common, whereas horizontal gradients abound in deep canyon reservoirs. An example is the gradient of nutrients, the quantity of which decreases in the direction from the inflow towards the dam. Vertical abiotic gradients are the same for reservoirs and lakes. These are mainly gradients of light, heat, dissolved and oxygen. Some abiotic horizontal gradients may be present in both to reservoirs and lakes. The abiotic gradients also often affect the biotic ones. For example the gradient of nutrients affects the gradient of all organisms in the reservoir. Each species living in the reservoir prefers different type of environmental conditions, which may be given by a combination of these gradients. The areas preferred by particular cladoceran species can overlap quite extensively. In the Daphnia longispina species complex, co-occurrence of parental species may result in interspecific hybridization, and possibly formation of hybrid zones. The hybrids can often...
|
|
|
Numerical Method of Image Registration Using Nonlinear Geometric Transform
Stodola, Jakub ; Druckmüller, Miloslav (referee) ; Štarha, Pavel (advisor)
The goal of the thesis is to find general nonlinear geometric transformation, which compensates irregular deformation of images, so that they could be registered. In the introductory part, necessary mathematical tools are stated, especially convolution, correlation and Fourier transform. In the next part, method of phase correlation is stated, followed by algorithms used for finding the geometric transformation. Those algorithms are implemented in computer program, that is included.
|
|
|
Computer-aided method of analytic surfaces modelling
Stodola, Jakub ; Štarha, Pavel (referee) ; Martišek, Dalibor (advisor)
The first part of the thesis deals with projections of points from an Euclidean space into a plane and displaying of the resulted planar points on a computer. The second part focuses on a discretization of analytically specified surfaces. This is an approximation with network points. Due to the previous part, we are able to display them on a computer. The third part is dedicated to various types of coating fillings. Finally, the software solution is added.
|
|
| |
guest ::
