Use of multi-speed asynchronous electric motors

Tato bakalářská práce se zabývá vícerychlostními asynchronními elektromotory a jejich využitím. V první části jsou uvedeny metody, kterými lze měnit počet pólů asynchronního motoru, a dále jeho elektrické a mechanické vlastnosti. Tato část také obsahuje podrobný návod pro vykreslení momentové charakteristiky asynchronního motoru z hodnot, které udává výrobce. Dále je navržen pohon ventilátoru a pojezdu jeřábu, jehož výsledkem je sestrojení momentové charakteristiky motoru i poháněného zařízení. Další bod pojednává o připojení vícerychlostních asynchronních elektromotorů k síti a o způsobech jejich jištění. Závěrem bakalářské práce autor navrhuje ovládání obou výše zmíněných pohonů.This Bachelor thesis occupies with multi-speed asynchronous electric motors and their use. The first part analyses the methods which can be used to change the number of poles of induction machine and its electrical and mechanical properties. This part also contains detailed instruction for construction of torque speed characteristic from values which gives producer. In the next part is designed fan drive and crane travel drive whose result is construction of torque speed characteristic of motor and driven equipment. Next point deals with connection of multi-speed asynchronous electric motors to electrical network and their methods of protection. At the end of Bachelor thesis author devises control of both aboved-mentioned drives.410 - Katedra elektroenergetikyvýborn

Validation of the design of the space layout of the MV substation elements using FEM

Tato diplomová práce se zabývá využitím modelování fyzikálních polí pomocí numerických metod v programu Ansys Maxwell k ověření návrhu prostorového uspořádání prvků rozvodny vn a celkového návrhu odpojovače vn. Teoretická část obsahuje několik kapitol s tématy, která jsou stěžejním základem pro návrh většiny elektrotechnických zařízení. Dále pojednává o rozvodnách a využití numerických metod v modelování fyzikálních polí. V praktické části je provedena statická elektrická analýza pro určení rozložení elektrického pole rozvodny. Nakonec autor pomocí statické elektrické, statické magnetické, harmonické a statické termální analýzy ověřil celkový návrh odpojovače vn.This thesis deals with use of modeling physical fields using FEM in Ansys Maxwell program for validation of the design of the space layout of the MV substation elements and overall design of the MV disconnector. The theoretic part contains several chapters with topics, which are basics for design of most electrotechnical devices. Further it discusses about substations and use of modeling physical fields using FEM. In practical part electrostatic analyze is performed for determination of electric field layout in the substation. In the end author verified overal design of the MV disconnector using electrostatic, magnetostatic, eddy current and static thermal analyze.410 - Katedra elektroenergetikyvýborn

ON TRAVERSABILITY COST EVALUATION FROM PROPRIOCEPTIVE SENSING FOR A CRAWLING ROBOT

Traversability characteristics of the robot working environment are crucial in planning an efficient path for a robot operating in rough unstructured areas. In the literature, approaches to wheeled or tracked robots can be found, but a relatively little attention is given to walking multi-legged robots. Moreover, the existing approaches for terrain traversability assessment seem to be focused on gathering key features from a terrain model acquired from range data or camera image and only occasionally supplemented with proprioceptive sensing that expresses the interaction of the robot with the terrain. This paper addresses the problem of traversability cost evaluation based on proprioceptive sensing for a hexapod walking robot while optimizing different criteria. We present several methods of evaluating the robot-terrain interaction that can be used as a cost function for an assessment of the robot motion that can be utilized in high-level path-planning algorithms

Re-discovery of Lieberkuehnia wageneri Claparède et Lachmann, 1859 (Rhizaria, Foraminifera): Taxonomical and Morphological Studies Based on a Slovak Population

Lieberkuehnia wageneri Claparède et Lachmann, 1859, a poorly known freshwater foraminiferan, was re-discovered after 38 years in a moss sample from an oak-hornbeam forest in Malé Karpaty Mts. (Western Slovakia). The species was taxonomically revised, re-described using light microscopical observations, and its occurrence and ecology were reviewed. Its locomotive form is typical with membranous and flexible ovoid test having a single terminal aperture from which a broad pseudopodial network emerges on a pseudopodial peduncle. Additional data and details are described, illustrated and discussed. Lieberkuehnia wageneri is known from various freshwater, soil and marine habitats in Western and Middle Europe, suggesting a high ecological tolerance and wide distribution. It is hoped that the observations reported in this paper will aid the identification of this species based on the locomotive morphology at the light microscopical level

ON TRAVERSABILITY COST EVALUATION FROM PROPRIOCEPTIVE SENSING FOR A CRAWLING ROBOT

Traversability characteristics of the robot working environment are crucial in planning an efficient path for a robot operating in rough unstructured areas. In the literature, approaches to wheeled or tracked robots can be found, but a relatively little attention is given to walking multi-legged robots. Moreover, the existing approaches for terrain traversability assessment seem to be focused on gathering key features from a terrain model acquired from range data or camera image and only occasionally supplemented with proprioceptive sensing that expresses the interaction of the robot with the terrain. This paper addresses the problem of traversability cost evaluation based on proprioceptive sensing for a hexapod walking robot while optimizing different criteria. We present several methods of evaluating the robot-terrain interaction that can be used as a cost function for an assessment of the robot motion that can be utilized in high-level path-planning algorithms

Notes for genera: basal clades of Fungi (including Aphelidiomycota, Basidiobolomycota, Blastocladiomycota, Calcarisporiellomycota, Caulochytriomycota, Chytridiomycota, Entomophthoromycota, Glomeromycota, Kickxellomycota, Monoblepharomycota, Mortierellomycota, Mucoromycota, Neocallimastigomycota, Olpidiomycota, Rozellomycota and Zoopagomycota)

Compared to the higher fungi (Dikarya), taxonomic and evolutionary studies on the basal clades of fungi are fewer in number. Thus, the generic boundaries and higher ranks in the basal clades of fungi are poorly known. Recent DNA based taxonomic studies have provided reliable and accurate information. It is therefore necessary to compile all available information since basal clades genera lack updated checklists or outlines. Recently, Tedersoo et al. (MycoKeys 13:1--20, 2016) accepted Aphelidiomycota and Rozellomycota in Fungal clade. Thus, we regard both these phyla as members in Kingdom Fungi. We accept 16 phyla in basal clades viz. Aphelidiomycota, Basidiobolomycota, Blastocladiomycota, Calcarisporiellomycota, Caulochytriomycota, Chytridiomycota, Entomophthoromycota, Glomeromycota, Kickxellomycota, Monoblepharomycota, Mortierellomycota, Mucoromycota, Neocallimastigomycota, Olpidiomycota, Rozellomycota and Zoopagomycota. Thus, 611 genera in 153 families, 43 orders and 18 classes are provided with details of classification, synonyms, life modes, distribution, recent literature and genomic data. Moreover, Catenariaceae Couch is proposed to be conserved, Cladochytriales Mozl.-Standr. is emended and the family Nephridiophagaceae is introduced

Comparison of renewable support systems in the member states of the EU

katedra ekonomiky, manažerství a humanitních vě

NOTES ON ACTIVE GYMNAMOEBAE (RHIZOPODA, GYMNAMOEBIA) IN TURIEC RIVER

Abstract: By direct examination of 8 samples of sediments of Turiec river (Central Slovakia) in August 2001, 14 taxa (2 orders, 8 families, 12 genera) of active gymnamoebae were noted. Several notes to observed species are given

Financial analysis of company CHÂTEAU VALTICE - Vinné sklepy Valtice, a. s.

Aby bylo možné zjistit finanční situaci a finanční zdraví společnosti, je potřeba nejen mít k dispozici účetní výkazy společnosti, ale také na jejich základě a na základě dalších dostupných informací provést důkladnější finanční analýzu, která pak může posloužit k řadě dalším účelům. Tato bakalářská práce je zaměřena na finanční analýzu společnosti CHÂTEAU VALTICE - Vinné sklepy Valtice, a. s. v letech 2010 - 2014 na základě veřejně dostupných dat. Je rozdělena do tří částí. První část je věnována vymezení metodiky práce a teoretickému rozboru jednotlivých ukazatelů finanční analýzy. Ty budou následně aplikovány v druhé části práce. Poté navazuje samotná finanční analýza společnosti (horizontální a vertikální analýza, výpočet poměrových ukazatelů, bonitní a bankrotní modely) a relevantní komentáře. Výsledky finanční analýzy jsou ještě porovnány s podnikem ZNOVÍN ZNOJMO, a. s. Na závěr je ještě provedena analýza SWOT, Porterova analýza pěti sil a na samém konci je uvedeno zhodnocení výsledků finanční analýzy a možná doporučení pro budoucí vývoj.In order to establish the financial position and health of a company, it is necessary not only to have the financial statements of the company, but also to carry out a financial analysis based on these statements and other available information. The financial analysis may then be utilized for a number of further purposes. This thesis is focused on financial analysis of the company CHÂTEAU VALTICE - Vinné sklepy Valtice, a. s. in the years 2010 - 2014 based on public data. It is divided into three parts: The first part is devoted to defining the methodology of the thesis and the theoretical analysis of various indicators of financial analysis. This analysis will then be applied in practicality in the second part. The next section will detail the financial analysis (horizontal and vertical analysis, ratio analysis, credit scoring and bankruptcy models) accompanied by relevant comments. The results of the financial analysis are then compared with the competing company ZNOVÍN ZNOJMO, a. s. Next, the SWOT analysis is made as well as the Porter\u27s Five Forces Analysis. At the conclusion of the thesis, the results of the analysis are interpreted followed by possible recommendations for future development

Re-discovery of Lieberkuehnia wageneri Claparède et Lachmann, 1859 (Rhizaria, Foraminifera): Taxonomical and Morphological Studies Based on a Slovak Population

Lieberkuehnia wageneri Claparède et Lachmann, 1859, a poorly known freshwater foraminiferan, was re-discovered after 38 years in a moss sample from an oak-hornbeam forest in Malé Karpaty Mts. (Western Slovakia). The species was taxonomically revised, re-described using light microscopical observations, and its occurrence and ecology were reviewed. Its locomotive form is typical with membranous and flexible ovoid test having a single terminal aperture from which a broad pseudopodial network emerges on a pseudopodial peduncle. Additional data and details are described, illustrated and discussed. Lieberkuehnia wageneri is known from various freshwater, soil and marine habitats in Western and Middle Europe, suggesting a high ecological tolerance and wide distribution. It is hoped that the observations reported in this paper will aid the identification of this species based on the locomotive morphology at the light microscopical level