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Water use efficiency (WUE), its definition and importance in plant resistance against osmotic stress
Jedlička, Tomáš ; Hála, Michal (advisor) ; Lhotáková, Zuzana (referee)
Water is one of the main limiting factors of plant growth. Availability of water on our planet is decreasing, and if we add fast-growing human population, we have a problem growing. Scientists from all around the world, especially those from arid regions, are facing a big problem, which is an attempt to make the most efficient use of water by plants. If this problem should be solved, we need to understand the issue of Water Use Efficiency (WUE). This paper attempts to summarize the current knowledge related to the issue of WUE, mainly focused on anatomical and physiological parameters control of WUE, which is focused primarily on the issue of evapotranspiration. Another part focuses on clarifying the issue of WUE at the gene level and the related biotech opportunities. At the end of the work are discussed possibilities of increasing WUE using irrigation techniques. Key words: water use efficiency, evaporation, transpiration, stoma, stomatal density, abscisic acid, ERECTA
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Utilizing HLA for agent based development platforms
Jedlička, Tomáš ; Plch, Tomáš (advisor) ; Bednárek, David (referee)
The High Level Architecture (HLA) provides a universal solution for interconnecting various simulation environments and applications thus creating a more complex simulation entity. The idea is built upon controlled and directed data exchanges of objects and events (via the RunTime Interface - RTI) shared by participants (i.e. simulations) thus creating a distributed data environment. The aim of this thesis is to investigate usability of HLA for agent based development platforms (e.g. Pogamut) as well as providing transparent and simple to use access to HLA for HLA unaware applications. The thesis describes architecture and provides a prototype proof-of-concept implementation, which integrates HLA with two different (closed source) game engines providing them the ability to communicate to a simple client application according to a reasonable subset of the HLA standard. The thesis also provides performance measurements of prototype implementation.
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Current possibilities of data communication via the power network
Jedlička, Tomáš ; Mišurec, Jiří (referee) ; Mlýnek, Petr (advisor)
This thesis is focused on processing, summary information about PLC commnunication and analyzing present issue of data transfer via powerline grids. Teoretic and technical information about PLC communication, advantages, disadvantages, kinds of PLC communication depending on used frequency ranges and also about used modulation techniques are processed in the first part of the thesis. The second part of thesis is focused on analysis information about choice types of modems and companies, which are oriented on PLC technology. Measurements results of broadband PLC communication are evaluated in the third part of thesis with opportunity to extend and modification it. Laboratory measurement of narrowband PLC communication is processed and focused in this part on transmission speed and spectrum of signal. Results of measurement in company ModemTec are summarized in the end of thesis.
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Power line channel simulator
Jedlička, Tomáš ; Fujdiak, Radek (referee) ; Mlýnek, Petr (advisor)
The master’s thesis is focused on the analysis and modeling of power line communication with aim to implement power line channel simulator in the programming environment Matlab. At the beginning of the thesis are summarized basic information about the PLC communication, its basic distribution in terms of frequency bands and are also mentioned advantages and disadvantages. The emphasis on the meaning and importance of modeling with the aim to analyze PLC communication channel is specified further. The following is a detailed description of the current power lines communication models. Power line channel simulator was created on the basis of mathematical analysis for low-voltage (LV) distribution networks. The created simulator uses a model of cascaded two-ports and works in random or fixed mode. Input parameters are real topologies, different types of loads and cables. RLC resonant circuit as a frequency selective impedance is also included in impedance models. Based on the obtained results was performed the analysis, determined the critical parameters and extreme values. Comparison of effectiveness of created simulator was processed on the basis of available simulators from other authors. Two versions of simulator were created using the results obtained under comparison of effectiveness. For comparison was also performed real measurement on a simple topology. The experimental measurements results have been implemented in the simulator.
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Open Source BI Platforms Comparison
Jedlička, Tomáš ; Novotný, Ota (advisor) ; Maryška, Miloš (referee)
Diploma thesis focuses on open source business intelligence platforms. The main aim of this thesis is to compare open source BI platforms Pentaho BI Suite and Jaspersoft BI Suite using a set of criteria on the example of the solution for a fictive company. In order to achieve this goal, the research for criteria in already existing comparisons is made firstly and on the basis of this own comparative criteria and their weights are defined. Then important features of platforms under the BI solution primary layers are characterized. In the conclusion both platforms are evaluated and compared according to the result values of all criteria. The thesis is divided into two parts. The theoretical part deals with the analysis and definition of criteria and the BI platform introduction. Used criteria are analyzed in the Gartner research, in the book about business intelligence and in two diploma theses. Own defined criteria are divided into following groups: Installation, ETL, OLAP, Reporting and Documentation. The introduction includes description of components, licence politics and available editions. In the practical part the platform functionality is tested, the project created in both of them is specified and then platforms are evaluated and compared. The functionality testing is made progressively from installation, through ETL and OLAP to reporting. The main aim of this thesis is completed in the last chapter of the practical part, where both platforms are evaluated according to the set of defined criteria, first of all under the BI solution primary layers and then also from general point of view. Here is used the weighted sum method from the multi-criteria decision analysis. The contribution of this thesis is in the transparent confrontation of two open source BI platforms, in the definition of the comparative criteria set and also in the presentation of all tools strengths and weaknesses including screenshots.
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Testing the procedure Ac4ft-Miner
Jedlička, Tomáš ; Rauch, Jan (advisor) ; Šimůnek, Milan (referee)
Bachelor thesis focuses on testing the procedure Ac4ft-Miner. The aim of the thesis is to present this procedure, to suggest possibilities of its application and demonstrate them on apposite examples. Ac4ft-Miner is a new GUHA procedure that allows mining for G-action rules. It is an approach to action rules based on the GUHA method and its implementation in the LISp-Miner system. Basic types of G-action rules are defined in this work. Specific examples for each type and their interpretation and application are given, including possible problems and their solutions. Then results of this analysis are compared with a definition of the action rules. The input of the procedure Ac4ft-Miner is further described and in the end the procedure is applied for solving an analytical question.
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Solvency II and its impact to czech insurers
Jedlička, Tomáš ; Dědková, Eva (advisor) ; Bauerová, Jarmila (referee)
Práce analyzuje dopady zavedení nového principu řízení solventnosti pojistného trhu - Solvency II. Zohledněn je historický vývoj pojišťovnictví, aktuální stav regulace v této oblasti a pozitiva resp. negativa současného přístupu. Samotný koncept Solvency II je rozdělen do několika částí. V teoretické části jsou analyzovány procedury přijetí evropské směrnice a taky principy samotného přístupu. V závěru se analyzují kvantitativní výsledky kvantitativních studií a jejich pravděpodobný dopad na samotné pojišťovny po zavedení Solvency II s důrazem na oblast České republiky.
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