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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Studie výstavby MVE na střednín a dolním toku řeky Moravy / Study of the small water power plant which is situated in the middle and lower reach of river Morava

Dočkal, Jiří January 2008 (has links)
The present thesis deals with the description of the current state on the course of Morava river from small hydro Kromeriz after a small water plant Hodonin. Subsequently, I deal with the description of search of weir plants and weirs for the construction of small hydropower (especially their heads, structures and, where appropriate, possible adaptation). Then I deal with completion new hydroelectric plants on this founded weir plants and weirs which are in section between the small hydroelectric power Kromeriz and Lanžhot city on the Czech Republic side (Brodské on the Slovak Republic side). In this work is mainly focus on the calculation of installed performance in individual locations (and also the calculation of achievable performance in these locations), machinery design (for the use of selected sets from Hydrohrom company) and the way the configuration of the power switch. If it is in those places, řeším even more possibilities of this construction is splavnění view of the river, especially in the field of Hodonin - Lanžhot. In addition, deals with the design of line side cubicle of each switch to local distribution networks (draft routes). In the last phase deals with the size of the production in each generation, calculations of costs of constructing these plants, approximate calculation of the production (of the flows of 2007) and time of return on your investment in the construction.
2

Tvorba a estimace modelu malé vodní elektrárny v programu PSCAD / Creation and estimation of small hydro power plant model in PSCAD

Razyapova, Aygul Unknown Date (has links)
This thesis focused on creating a model of a small hydropower plant model (SHPP) and a part of the electricity network in the simulation software "PSCAD" (basing on real sources). The model will be specified on the basis of the data obtained from the measurements to correspond with the real equipment.
3

Tvorba a estimace modelu malé vodní elektrárny v programu PSCAD / Creation and estimation of small hydro power plant model in PSCAD

Razyapova, Aygul January 2016 (has links)
This thesis focused on creating a model of a small hydropower plant model (SHPP) and a part of the electricity network in the simulation software "PSCAD" (basing on real sources). The model will be specified on the basis of the data obtained from the measurements to correspond with the real equipment.
4

A generalization of the minimum classification error (MCE) training method for speech recognition and detection

Fu, Qiang 15 January 2008 (has links)
The model training algorithm is a critical component in the statistical pattern recognition approaches which are based on the Bayes decision theory. Conventional applications of the Bayes decision theory usually assume uniform error cost and result in a ubiquitous use of the maximum a posteriori (MAP) decision policy and the paradigm of distribution estimation as practice in the design of a statistical pattern recognition system. The minimum classification error (MCE) training method is proposed to overcome some substantial limitations for the conventional distribution estimation methods. In this thesis, three aspects of the MCE method are generalized. First, an optimal classifier/recognizer design framework is constructed, aiming at minimizing non-uniform error cost.A generalized training criterion named weighted MCE is proposed for pattern and speech recognition tasks with non-uniform error cost. Second, the MCE method for speech recognition tasks requires appropriate management of multiple recognition hypotheses for each data segment. A modified version of the MCE method with a new approach to selecting and organizing recognition hypotheses is proposed for continuous phoneme recognition. Third, the minimum verification error (MVE) method for detection-based automatic speech recognition (ASR) is studied. The MVE method can be viewed as a special version of the MCE method which aims at minimizing detection/verification errors. We present many experiments on pattern recognition and speech recognition tasks to justify the effectiveness of our generalizations.
5

Návrh elektrického ovládání malé disperzní jednotky na bázi řiditelného PLC / Design of electric control small dispersed sources on the basis PLC

Morávek, Jan January 2012 (has links)
This thesis summarizes the basic theoretical knowledge on the problems of controlling the small hydro power plants. Briefly lists the basic requirements for the control system and provides an overview of the available automation systems. The main part of the thesis describes the requirements for the control system and its specific design based on the Unitronics PLC.
6

Návrh vzdáleného řízení malé vodní elektrárny / Small Hydropower Plant Remote Control Project

Šarman, Luděk January 2012 (has links)
The thesis focuses on a proposal of making maintenance and control of a small hydroelectric power station more effective. It is adjusted to the concrete situation and contains a selection of management, suitable technology, design of network infrastructure and description of an active element configuration with an appropriate proposition of financing. Then the final directions for installation and usage of a remote control system of the power station are presented as the result of this thesis.
7

Návrh vírových turbin pro MVE Vrchlabí / The design of swirl turbines for small water power plant Vrchlabí

Vosáhlo, David January 2013 (has links)
The aim of this master’s thesis is the optimal design of swirl turbines for small water power plant. It is described a different possibilities of turbine‘s install for locality Vrchlabí. It presents a design of turbines and draft tubes. For the installation of turbines is computed theoretical production of annual electric energy. Furthermore it describes a design of supply channel and intake structure.
8

Studie návrhu hydrotechnických a biotechnických opatření na levém břehu řeky Svratky v k.ú. Ujčov, cca ř. km 93,8 - 94,1

Bureš, František January 2017 (has links)
This diploma thesis Study of the proposal of hydraulic and biotechnical measures on the left bank of the river Svratka in the cadastral area Ujčov, of approx. km 93.8 to 94.1, builds on the previous bachelor thesis Study of selected land on the river Svratka in the village Ujčov. This work is a suggestion to adjust the area in terms of the appropriate use of land, which is owned by the author's family. The affected area lies at the weir on the river Svratka and is currently made up of a pool, which is a relic of the arm of Svratka. The pool is followed by a wetland and grassland with wood vegetation. The first part consists of a literature review and analysis of the issue areas, including its historical development. The practical part is focused on individual hydraulic engineering and biotechnical modifications in the area.
9

Entwicklung eines Modells dynamisch-muskulärer Arbeitsbeanspruchungen auf Basis digitaler Menschmodelle

Mühlstedt, Jens 31 August 2012 (has links) (PDF)
Arbeitswissenschaftliche digitale Menschmodelle werden als Werkzeuge virtueller Ergonomie zur Gestaltung menschengerechter Produkte und Arbeitsplätze genutzt. Der bislang nur qualitativ beschriebene Praxiseinsatz wird durch theoretische Analysen und eine empirische Studie systematisiert und darauf aufbauend werden die Schwachstellen der Systeme erörtert. Ein wesentlicher Ansatzpunkt für Weiterentwicklungen ist die Erarbeitung ergonomischer Bewertungsverfahren bzw. -modelle, insbesondere für Belastungen aufgrund von Bewegungen. Digitale Menschmodelle bieten das Potenzial, aus simulierten Bewegungsdaten und den damit zusammenhängenden Belastungen eine Bewertung der Arbeitsvorgänge zu generieren. In dieser Arbeit wird daher ein neues arbeitswissenschaftliches Bewertungsmodell für muskuläre Beanspruchungen erforscht, d.h. methodisch hergeleitet und evaluiert. Dazu ist ein Versuchsstand zur Standardisierung und Belastungserzeugung notwendig. In der darauffolgenden Laborstudie werden die Belastungsparameter statischer Momentanteil, Winkelgeschwindigkeit und Momentrichtung variiert und die daraus entstehende Veränderung der muskulären Beanspruchung von Probanden erforscht. Ein dafür benötigtes, neues Verfahren zur Normalisierung wird vorgestellt. Die Laborstudie zeigt, dass der statische Momentanteil linear steigend mit der Arbeitsbeanspruchung zusammenhängt. Die durchschnittliche Winkelgeschwindigkeit beeinflusst die Arbeitsbeanspruchung je nach Muskeltyp entweder linear steigend oder ohne Zusammenhang. / Digital human models for human factors are used as tools for virtual ergonomics and the design of products and workplaces. In this work the use of the systems is analysed with theoretical models and an empirical study. Therefore, disadvantages of the systems are identified. A main idea for further developments is the research on ergonomic approaches and models, especially for movements and the strain caused by movements. Digital human models are capable to assess work processes based on data from simulations. In this work a new human factors orientated rating model for muscular strains is developed and evaluated. A test stand generates and standardizes the stress. In a laboratory survey the stress parameters are analysed. The variation of the static torque part, the angular velocity and the torque direction cause changes in the muscular strains. Hence, these muscular strains are measured electromyographically. A new normalisation method, the normalized standard movement, is introduced. The survey shows the existence of a correlation of static torque part and work strain. Depending on the muscle type, the angular velocity either affects the work strain linear increasing or does not affect it.
10

Jištěný řídicí systém / Secured control system

Kubáň, Michal January 2010 (has links)
This work deals with the design of a small hydro secured control system. The secured control system itself belongs to the Fault Tolerant Systems category. At first the requirements on small hydro control system are discussed. Then the introduction into the basics of Fault Tolerant System theory is given. The requirements on small hydro control system and basics of Fault Tolerant Systems are basis for specification of secured control system which design and construction is the main objective of this work.

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