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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

Koordinace provozu PST transformátorů v propojeném regionu / Coordination of operation of PST transformers in the interconnected region

Tesař, Jan January 2018 (has links)
This master’s thesis deals with phase-shifting transformers (PST) and coordination of electrically close devices in an interconnected region. Theoretical research is performed in the work, describing methods of power control, function and design of PST, as well as actual methods of PST coordination in the rest of the world. Based on the research there is an optimalisation algorithm designed in MATLAB, which computes recommended tap petting of PST based on the network configuration. In the second part of this thesis there are described components of this algorithm and also presented the results of three demonstrative scenarios. Algorithm is able to solve minor problems in the network; more complex problems are beyond its solving ability. For an improved functionality there is a necessity to further expand this algorithm by a network redispatch solving algorithm.
2

Možnosti optimalizácie zákazníckych procesov v ZSSK, a.s. / Optimalisation options of customer processes

Harušťáková, Pavlína January 2008 (has links)
The graduation theses deals with producing the draft for optimalisation options in Slovak Railway Company. The theses in theoretical part defines chosen basic requirements of Quality Management,defines the notions as customer satisfaction, measurement of quality, process management and improvement. It outlines the options for optimalisation bases of customer processes, that are determination, precise analysis and formulation of measurable criteria and finally proposes the optimalisation.The theses is connected with the results of questioning in bachelor theses.
3

Optimalizace obráběcího procesu zvolené rotační součásti / On the optimization of machining process of the rotary part

Benda, Martin January 2019 (has links)
This thesis deals with analysing component manufacture of valve lines. Firstly evaluating current condition of production including determinated manufacture times and costs. Secondly carrying out inmprovement proposals for manufacture and optimalisation of cutting conditions while considering the minimal costs given for operation sections. The final provision summarizes results which were achieved and overall benefits of the thesis.
4

Využití kapilární elektroforézy pro stanovení tenzidů ve vodách / Application of capillary electrophoresis for determination of surfactants

Langová, Lenka January 2009 (has links)
Tensides rank among the surfactants with ability to reduce surface tension. This ability is used to remove impurities. Surfactants can be divided into four basic groups: anionic, cationic, nonionic and zwitterionic. Anionic surfactants belong to the most widespread surfactants in the Czech Republic today. They get into sewage waters from various cleansing and washing agents which are used both in households and industry. So this diploma thesis deals with their assessment by application of capillary electrophoresis.
5

Optimalizace energetického zásobování FSI - areál Technická 2 / Power supply optimalization of FSI, Technicka 2

Fortelný, Zdeněk January 2008 (has links)
The subject of this diploma thesis is the optimalization of energetic supply of FME- Technická 2, Brno. The supply optimalization is thematically connected to Ing. Jan Kučera´s diploma thesis. The project is divided into several parts. One part is focused on general clarification of the term cogeneration and possible pertinent technologies. The contemporary state and energetic needs of area are analyzed in the second practical part of the thesis. Remaining chapters are focused on comparison and economical analysis of the proposed modules. The conclusion is devoted to the overall effect of selected modules on energetic consumption in the object.
6

Akcelerace neuronových sítí v FPGA / Acceleration of Neural Networks in FPGA

Krčma, Martin January 2014 (has links)
This thesis deals with a training of the FPNN structures. It focuses on the ways of direct conversion of the pretrained arti cial neural networks to FPNNs. This is useful when original training data set is not reachable.
7

Porovnání stavu travních porostů a víceletých pícnin v konvenčním a ekologickém systému hospodaření ve zvoleném zemědělském podniku / The comparison of state of permanent grasslands and perennial crops in convention and ecological system of farming in select farm

JANA, Václav January 2018 (has links)
The finaldiploma thesis isfocused on thecomparison of themulti-annualfoddercrops and permanent grasslands of organic and convention alagriculture and thein farmingsystem. The firstchapters are devoted to a briefdescription of bothtypes of agriculture and thein differences and specifics. In the next part are describe decological, economic and economicsystems of management in selected companies. Finally, a summary of the most important findingsforfurther use or optimizationis proposed.
8

Projekt rebrandingu neziskové organizace / The rebranding process of the non-profit organization

Kunert, Pavel January 2011 (has links)
The thesis is looking into the rebranding process of the non-profit organization. The work describes the project according to its particular stages, which are common in the commercial world and the examples given are showing the differences when developing similar project in the non-profit organization People Management Forum. The author is using his work experience as a marketing specialist, who handles the company's communication, maintains corporate identity, mini-project of creating presentations on the web and the analysis and the draft of the new structural diabase fulfilling the need fot objektive informations of transformation part sof newly propřed organizational structure. The main aim is to show the importance of setting partial goals in order to fulfill the vision that the company outlined before the whole process. First, the author explains the relationship of the non-profit organization with its key stakeholders in the micro and macro environment. Lately he explains how this relationship influences the company's communication and public relations. In the fourth chapter, he describes rebranding as a process and clarifies the importance and key factors of its particular stages. In the fifth and sixth chapter, the author outlines the relationship of the organization People Management Forum and its daughter company HR Forum, s.r.o., which is crucial for the practical part of the work. He shows the main activities of People Management Forum and the way how the organization presents them among its target groups. The chapter seven is finally the principal part of the work and the practical demonstration of the rebranding project. According to the theory mentioned in the beginning, he is explaining the key success factors of this kind of project and making recommendations to the stages, which he demonstrates with practical examples how it was applied in the organization People Management Forum. In the eight chapter, the author gives a detailed description of his mini-project of the draft and the implementation of the new website and structural database, including the way how were metrics for the success measurement set and were they evaluated. He recommends how the strategy could be more effective and how the project will adapt to the new trend in that particular area.
9

Suivi de multi-modulations non linéaires pour la surveillance

Li, Zhongyang 09 July 2013 (has links) (PDF)
Cette thèse propose une nouvelle méthode pour modéliser les fonctions non linéaires de modulations d'amplitude et de fréquence de signaux multicomposantes non stationnaires de durée longue. La méthode repose sur une décomposition du signal en segments courts pour une modélisation locale sur les segments. Pour initialiser la modélisation, nous avons conçu une première étape qui peut être considérée comme un estimateur indépendant et non paramétrique des fonctions de modulations. L'originalité de l'approche réside dans la définition d'une matrice de convergence totale intégrant simultanément les valeurs d'amplitude et de fréquence et utilisé pour l'association d'un pic à une composante selon un critère d'acceptation stochastique. Suite à cette initialisation, la méthode estime les fonctions de modulations par l'enchaînement des étapes de segmentation, modélisation et fusion. Les fonctions de modulations estimées localement par maximum de vraisemblance sont connectées dans l'étape de fusion, qui supprime les discontinuités, et produit l'estimation globale sur la durée totale du signal. Les étapes sont conçues afin de pouvoir modéliser des signaux multicomposantes avec des morts et naissances, ce qui en fait une de ses originalités par rapport aux techniques existantes. Les résultats sur des signaux réels et simulés ont illustré les bonnes performances et l'adaptabilité de la méthode proposée.
10

Modélisation de signaux longs multicomposantes modulés non linéairement en fréquence et en amplitude : suivi de ces composantes dans le plan temps-fréquence / Modeling of long-time multicomponent signals with nonlinear frequency and amplitude modulations : component tracking in the time-frequency plane

Li, Zhongyang 09 July 2013 (has links)
Cette thèse propose une nouvelle méthode pour modéliser les fonctions non linéaires de modulations d’amplitude et de fréquence de signaux multicomposantes non stationnaires de durée longue. La méthode repose sur une décomposition du signal en segments courts pour une modélisation locale sur les segments. Pour initialiser la modélisation, nous avons conçu une première étape qui peut être considérée comme un estimateur indépendant et non paramétrique des fonctions de modulations. L’originalité de l’approche réside dans la définition d’une matrice de convergence totale intégrant simultanément les valeurs d’amplitude et de fréquence et utilisé pour l’association d’un pic à une composante selon un critère d’acceptation stochastique. Suite à cette initialisation, la méthode estime les fonctions de modulations par l'enchaînement des étapes de segmentation, modélisation et fusion. Les fonctions de modulations estimées localement par maximum de vraisemblance sont connectées dans l'étape de fusion, qui supprime les discontinuités, et produit l’estimation globale sur la durée totale du signal. Les étapes sont conçues afin de pouvoir modéliser des signaux multicomposantes avec des morts et naissances, ce qui en fait une de ses originalités par rapport aux techniques existantes. Les résultats sur des signaux réels et simulés ont illustré les bonnes performances et l’adaptabilité de la méthode proposée. / In this thesis, a novel method is proposed for modeling the non-linear amplitude and frequency modulations of non-stationary multi-component signals of long duration. The method relies on the decomposition of the signal into short time segments to carry out local modelings on these segments. In order to initialize the modeling, a first step is designed which can be considered as an independent estimator of the modulations over the entire duration of the signal. The originality of this approach lies in the definition of the total divergence matrix integrating simultaneously the amplitude and frequency values, which are employed for the association of a peak to a component according to a stochastic acceptation criteria. Following the initialization, the proposed method estimates the modulations by the step sequence of segmentation, modeling and fusion. The locally obtained modulation functions estimated by maximum likelihood are finally connected in the fusion step which suppresses their discontinuity and yields the global estimation over the entire signal duration. All these steps are defined in order to be able to model multicomponent signals with births and deaths, making one of its original features compared to existing techniques. The results on real and simulated signals have shown the good performance and adaptability of the proposed method.

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