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Road side verges in agricultural landscape and their biodiversity - epigeic beetles
JELÍNEK, Jan
The species diversity, aktivity, equitability and human impact were studied using epigeic beetle communities on transect whest field field trip and alfaalfa field. The materiál was collected by pitfall traps during the period Juni-September 20016 in cadastr of the town Písek in the Southern Bohemia. 38 species and 567 individuals were kept together. Activita of beetles differs in studied plots. The highest aktivity was found on fields and the lowest in field trip. Index of human impact was very similar on studied plots wheat 2,5, field trip 12, rape 0). I tis clear that alll studied are strongly impacted by human acticity. The frequency of relic species were (Dragons and Ground beetles) 20% only on all studied plots 80,00%. The adaptible species absent on field cultures and was found on field trip only. 6 species of adaptible (stenotopic) species were found on field trip only, but their aktivity were very low. The equitability of communities in filed plots was very low (2,331 2,474). The highest equitabilty was found on field trip (3,04). The ordination of commuties indicate the close similarity. The species diversaity is very similar in all communities on studied plots. We recommend the change of sowing management and the lower agrotechnic interference in studied locality. We recommend to enhance the plots of biocorridors and biocenters. The stuided field trip plays a role for the increse of the biodiversity of epigeic beetles, which are important for the reduction of pest organisms in agricultural landscape.
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Exercises and problems in linear algebra ane geometry
JELÍNEK, Jan
The aim of this bachelor thesis is to compile a collection of problems from linear algebra and geometry. The collection is intended to be used as a teaching tool at the high school and university. Some tasks are resolved in the collection. Sample images created in a suitable dynamical geometry program (GeoGebra) are used when entering and describing the solution.
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Suitable methods of data prepration for mutistream compression
Jelínek, Jan ; Žemlička, Michal (advisor) ; Falt, Zbyněk (referee)
This work focuses on compression algorithm called multistream compression. We have tried to improve this algorithm to be competitive with other commonly used compression algorithms. We have also tried to combine it with well-known transformations like BWT or MTF to efficiently handle text files. Another part of the research was compose characters into bigger parts and transform the result by multistream compression. We have tried blocks of constant length like bigrams and blocks of variable length like syllables or words. Last experiments was with small changes of MSC algorithm and compare them with the original algorithm.
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Comparative analysis of runoff in experimental basins of upper Otava River
Fialová, Petra ; Janský, Bohumír (advisor) ; Jelínek, Jan (referee)
This bachelor thesis summarizes knowledge and provides new analyses about the runoff regime of three experimental streams in headstream area Otava River. The main focus is concentrated on comparison between the experimental basins in physical-geographic conditions, climate environment and peak flow. This thesis is based on data acquired during more than four years field survey which was realized in this area by the Faculty of Science, Department of Physical Geography and Geoecology.
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Determinants of housing prices in Central and Eastern Europe
Jelínek, Jan ; Hlaváček, Michal (advisor) ; Jakubík, Petr (referee)
Determinants of Housing Prices in Central and Eastern Europe Abstract House price developments have a large impact on the macroeconomic stability, an example of which is the recent global crisis, partially triggered by a house price boom and bust. This work attempts to explain the behavior of house prices in ten Central- and Eastern- European countries over the last decade using three main methods: graphical comparison of the characteristics of the housing markets, panel data analysis, and time series anal- ysis. First, a cross-country comparison shows that owner occupation rate or migration indeed play a role while other factors apparently do not. Second, the results of using the Pooled Mean Group estimator on a panel of all countries confirm that real income and unemployment are in general significant determinants of house prices. In the third part of the empirical analysis, VAR or VEC models are used on several individual countries to evaluate the role of national capitals as price leaders for the rest of the country. These models are finally employed again to test for significance of other fundamentals in several countries. The diversity of results leads to the conclusion that house price determinants differ widely across the analyzed countries, although this may be partially attributable to the unavoidable...
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Identification of Terpenoid Resins in Artworks by Gas Chromatography
Jelínek, Jan ; Beneš, Pavel (referee) ; Hrdličková Kučková, Štěpánka (advisor)
Terpenoic varnishes are used in artworks since 11th century. Their task is to protect the artworks against the adverse effects of the environment and frequently they complete the artistic page. Although synthetic varnishes are currently widely used, especially in the case of modern art, the use of natural materials is still widespread and not only in the restoration of historical paintings and polychromy. In order to prepare terpenoic varnishes, rich supply of natural resins is used (damare, mastic, copals, colophony etc.). These resins differ in their composition and therefore they have various physical properties such as fragility, solubility, and not least the various darkening of varnish. For these reasons, it is necessary to know their composition, in order to be safely removed during restoration and subsequently replaced by a varnish of the same material composition. Gas chromatography is the most widely used analytical method for determination of natural resins, using a number of derivatizing reagents. The task of this thesis was to find the best separation conditions for the identification of resins by gas chromatography combined with flame ionization detector (GC-FID).
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Plant microclimate control
Jelínek, Jan ; Neděla, René (advisor) ; Papežová, Stanislava (referee)
This bachelor thesis discusses the management of a microclimate environment inside an
enclosed box. The aim of the work is to propose and implement a program for the
automized control of the microclimate. Microclimate management is ensured by a PLC
(Programmable Logic Controller) system utilizing the program Mosaic. Radishes
(Raphanous sativus L.) were chosen as the test plant. Optimal microclimate conditions for
the chosen test plant were achieved by programming the management system. The system
is easily adaptable, meaning endless different species of plants can be grown properly.
Healthy plant growth indicates the correct parameters of the microclimate.
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The Financial Analysis of selected agriculture- food enterprice
Jelínek, Jan ; Hálová, Pavlína (advisor) ; Mach, Jiří (referee)
The bachelor thesis is focused on financial analysis of selected enterprise. The work has been divided into a theoretical and a practical part. The theoretical part describes the concepts for the correct understanding of the financial analysis. There are also described the various pointers used in analysis of company itself.
For a practical part, the company Oseva Agri Chrudim has been selected for analysis. Years 2010 - 2014 have been chosen as rated period. In this part, the company is characterized here and there are used individual methods in practice. The first method is horizontal and vertical analysis of balance sheet and income statement,followed by ratio analysis, bankruptcy models and finally, intercompany comparison.
In the end of the work, the financial situation is evaluated and are given recommendations for future development.
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Nonlinear buckling analysis of a flue gas pipe
Jelínek, Jan ; Vincour, Dušan (referee) ; Létal, Tomáš (advisor)
This thesis deals with the nonlinear analysis of stability loss of flue gas pipe. This pipe is a part of desulphurization line. The thesis describes the creating of a simplified FEM model. It also describes the setting of the boundary conditions of the model for few loading cases. These cases differ by preference for one of the load as dominant. There are proposed several variants of stiffening by light ring stiffener. The work is finished by comparing the resistance to the stability loss of the reinforced variants and unreinforced model of flue gas pipe.
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