• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 36
  • 4
  • Tagged with
  • 40
  • 17
  • 9
  • 8
  • 6
  • 6
  • 6
  • 5
  • 5
  • 5
  • 4
  • 4
  • 4
  • 3
  • 3
  • 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.
31

Vyhodnocení technicko-ekonomických parametrů pro rozšíření elektronického mýtného v ČR / Evaluation of Technical and Economic Parameters for the Expansion of Electronic Toll Collection in the Czech Republic

Svatoš, Ivo January 2013 (has links)
The work evaluated on the basis of commonly available data some of the implications of collection toll of highway D1 and D5. It focuses on identifying potential alternative routes by using statistics of national traffic census. On these routes it evaluates the changes of traffic safety, which can show the change of traffic intensity of trucks. Next part evaluates potential economic benefits of bypassing toll routes. In the end it notes possible scenarios of impacts extended toll zones to the above fact findings.
32

Vztahové normy učitelů a výkonová motivace žáků / Teachers'reference norms orientation and students'achievement motivation

Kubíková, Kateřina January 2013 (has links)
In the following thesis we studied the development of performance motivation of pupils and its possible mutual connection with external evaluation according to relation norms. In the theoretical part we deal with scientific solutions of terms as performance motivation and relation norm. Mainly we concentrate on the analysis of the so called process model of performance motivation and on the analysis of types of relation norms. We also investigate in detail the issues of genesis of fear and anxiety of individuals during performance activities. We also occupy ourselves with the issues of causal attributions and different perspectives of term range of internal and external motivation. Subsequently, we made causal links between theoretical solutions and school performance. In this part we refer in particular to works of Heckhausen and Rheinberg. In the practical part we present a research, which is focused on the search for links between the use of individual relation norms in pedagogical situations of a teaching lesson and the development of performance motivation of pupils. In the research we took advantage of combination of quantitative and qualitative investigation. Triangulation of these methods helped us to understand better the contemporary school reality and to obtain relatively clear and...
33

Výkonové a programové rozpočtování na úrovni územní samosprávy. / Performance and program budgeting on the level of municipal authorities

HAMPELOVÁ, Anna January 2011 (has links)
The aim of my thesis was to clear up the issues of the program and performance budgeting on the level of municipal authorities. On the basis of available sources, I have gained findings and experience from abroad where these methods are used from the half of last century. Various changes and measures are assessed and realized to make a budget process better, economising more transparent and the allocation of sources more improved. The establishing of program-performance budgeting is quite a difficult process including several phases. Their realization is a necessary condition to be able to continue with the next phase and the whole process itself.
34

Výzkum spolehlivé komunikace pro IoT aplikace v bezdrátových sítích využívajících technologie Multi-RAT LPWAN / Research on Reliable Low-Power Wide-Area Communications Utilizing Multi-RAT LPWAN Technologies for IoT Applications

Štůsek, Martin January 2021 (has links)
Předkládaná disertační práce je zaměřena na „Výzkum spolehlivé komunikace pro IoT aplikace v bezdrátových sítích využívajících technologie Multi-RAT LPWAN“. Navzdory značnému pokroku v oblasti vývoje LPWA technologií umožňující masivní komunikace mezi zařízeními (mMTC), nemusí tyto technologie výkonnostně dostačovat pro nově vznikající aplikace internetu věcí. Hlavním cílem této disertační práce je proto nalezení a vyhodnocení limitů současných LPWA technologií. Na základě těchto dat jsou nevrženy nové mechanismy umožňující snazší plánování a vyhodnocování síťového pokrytí. Navržené nástroje jsou vyladěny a validovány s využitím dat získaných z rozsáhlých měřících kampaních provedených v zákaznických LPWA sítích. Tato disertační práce dále obsahuje návrh LPWA zařízení vybavených více komunikačními rozhraními (multi-RAT) které mohou umožnit překonání výkonnostních limitů jednotlivých LPWA technologií. Současná implementace se zaměřuje zejména na snížení spotřeby zařízení s více rádiovými rozhraními, což je jejich největší nevýhodou. K tomuto účelu je využito algoritmů strojového učení, které jsou schopné dynamicky vybírat nejvhodnější rozhraní k přenosu.
35

Akumulátorový svařovací zdroj / Battery-powered welding inverter

Starec, Stanislav January 2019 (has links)
This master thesis is focused on proposition and following implementation of DC arc welder. This paper is based on semester’s paper, where the first version was realized. The welder is powered by a battery pack with LiFePO4 type cells. Battery cells are protected by BMS circuits. The driving electronics controls the duty cycle step-down (buck) converter in a closed current or power regulation loop. The power regulator has been designed and validated by simulations. Switching power transistors, low side and high side, are implemented by optically isolated gate drivers. Charging the battery is solved by a switching flyback converter. For the charger and the welder is sheet metal construction made of aluminum sheet.
36

Soubor úloh pro kurs Sběr, analýza a zpracování dat / Set of excercises for data acquisition,analysis and processin course

Kornfeil, Vojtěch January 2008 (has links)
This thesis proposes tasks of exercises for mentioned course and design and creation of automated evaluation system for these exercises. This thesis focuses on discussion and exemplary solutions of possible tasks of each exercise and description of created automated evaluation system. For evaluation program are made tests with chosen special data sets, which will prove it’s functionality in general data sets.
37

Řízení klimatických vlastností pěstebního boxu / Control system for greenhouse

Haring, Filip January 2016 (has links)
This project deals with design and implementation of control system, which is used for regulation climate conditions in special grow box. Measured values are displayed on graphic LCD, sent to application in PC or displayed on web server. The project solves software and hardware implementation of measurement system.
38

Inovační aspekty elektronickeho výběru mýtného v ČR / Innovation Aspects of the Electronic Toll System in the Czech Republic

Šindelářová, Jana January 2008 (has links)
This thesis deals with the innovation of information system (IS) as a decision problem. The main objective of this thesis is the construction and the application of a method to select an optimal innovation variant of IS in an organisation of any scale. The designed method is based on the conception of the innovation of IS in the methodology "Multidimensional Management and Development of Information System (MMDIS)". The proposed selection method (Method of Innovation Modules based on MMDIS - MIM) is intended to serve mainly for decision-making on a strategic level. The IS structure is mapped in accordance with the MMDIS methodology. Innovation aspects are derived from two approaches: innovation aspects based on the MMDIS principles ("module of principles" - e.g. integration, flexibility, standardisation, measurability) and innovation aspects based on the IS dimensions defined in MMDIS methodology ("module of dimensions" - e.g. software, hardware, processes and functions, finances). The proposal method enforces a systematic approach to evaluation of the innovation variants, ensuring that the innovation aspects (the principles and the dimensions) are aligned with key requirements. As an example, this method is applied to an existing electronic toll system operated in the Czech Republic. Basic innovation variants of the electronic toll system are described - the microwave, the satellite and the hybrid toll system. Case studies from the Czech Republic, Austria and Germany are used for support the proposed innovation variants, as well as evaluation of variants. The principles and the dimensions form a framework for description and evaluation of the telematics, of the electronic toll and of the innovation variants of the electronic toll. The variants are compared within the framework of refined principles and dimensions, the optimal variant is proposed. The used evaluation parameters are a result of an analysis of published studies and specific toll system technical designs. The Method of Innovation Modules was constructed on the basis of MMDIS methodology and demonstrated by application in an example scenario (electronic toll). The key result of the proposed method is the comprehensive structured map of available system innovation opportunities.
39

Začleňování fotovoltaických elektráren do elektrizační soustavy / Integration of Photovoltaic Power Plants in the Electricity System

Michl, Pavel January 2010 (has links)
The thesis discuses an integration of photovoltaic power stations to electric network. The first part describes connecting conditions of small sources to distribution system, including administrative requirements, feasibility study, and requirements to the energy meters, measuring, control devices, switching devices and protection. The second part is aimed to describe problems of the photovoltaic system. Solar radiation generating and reducing of its intensity incident upon the earth surface are described in this part. The quantum of produced electric power depends on climatic conditions in the fixed area, seasons, etc. This work also discusses the types of photovoltaic cells and their actual efficiency. Inverters are further important components of the photovoltaic system. The parameters of the inverters have a great influence on the total actual efficiency of the photovoltaic system. Different methods of the photovoltaic panels’ connection with the inverters and their advantages and disadvantages are also mentioned. The supporting structure of the photovoltaic panels and eventually transformer are further important components of photovoltaic system. The work also analyze the methods of connection of the photovoltaic power station to distributive low voltage and medium voltage network, electric energy accumulation and possibilities of the sale of produced electric energy. The large number of the connected photovoltaic power stations has negative influences to electric network. The third part contains the design of a photovoltaic power plant with a capacity of 516,24 kWp on the scoped area in southern Bohemia. The project documentation for the location where the power plant is designed is also made. It contains the design of photovoltaic panels, the design of the inverters to get an optimal power load. This part also contains a calculation of the photovoltaic system losses and the design of transformer and the cable junction calculation of the distributive system. The feasibility study of the power plant connected to distributive system is also conducted. Its delivery rate will be connected to the distribution point Řípov (110/22 kV). The calculation results show us that this photovoltaic power plant can be linked to the distribution system. The final part of this paper contains an economic estimate of the photovoltaic power plant operating and the calculation of the return. An Economic return is influenced by the wide range of values that affect the total return rate. The calculation of an operating economy is made for several variants. The return rate in refer to contemporary redemption price for 2010 with no consideration for a bank loan is 7 years. If we consider the bank loan it would be 12 years. The penetrative reduction of the redemption price is expected for 2011. Calculation works with the decline of 30 %. It would extend the rate of return to 11 years without a bank loan or to 22 years with the bank loan. The bank loan is considered to cover 80 % of the investment.
40

Biofeedback a jeho použití / Biofeedback and its practical use

Dvořák, Jiří January 2009 (has links)
The aim of this work is describe common methods of biological feedback therapy that is used to treat some psychosomatic diseases. Subsequently, the description is focused on minimal brain dysfunction treatment by the help of EEG biofeedback. Properties and technical requirements for this therapy are concretized. The last part of this thesis is dedicated to the design and realization of practical software tool for EEG biofeedback therapy which is made in LabView 7.1. The M535 acquisition unit and NI USB-6221 measuring device are used for hardware solution.

Page generated in 0.0444 seconds