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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.
221

Vyhodnocení snímků pořízených pomocí UAV / Evaluation of data captured by UAV

Martináková, Veronika January 2018 (has links)
The master´s thesis deals with the application of unmanned aerial vehicle (UAV) in photogrammetry and mapping. The first part describes the UAV that was used for imaging, legislative restrictions resulting from its operations, planning and realization of the flight. The second part of this thesis is focused on processing results, especially on evaluation the accuracy of the results gained by UAV with and without a GNSS module. The data are evaluated in the 3rd accuracy rating class (ČSN 01 3410). The theoretical principles are explained as well. The main aim of the thesis is to demonstrate the effective use of the GNSS module Emlid Reach and the unmanned aerial vehicle in geodesy.
222

Podnikatelský záměr - zřízení lesní školky / Business Plan

Kohoutková, Martina January 2019 (has links)
The diploma thesis deals with the creation of a realistic and applicable business plan for a new business – a forest nursery. The diploma work is divided into four main parts. Part one describes the objective and methodology of work. Followed by the second part, a theoretical one, in which the theoretical knowledge and the starting point needed to create the business plan are described and explained. In the third part, I analysed, with help of the theoretical knowledge, the current market situation and the internal and external business environment. The last part includes suggestions for the business plan and is closed with a final summary and recommendations, which should contribute to the establishment and to the further development of the firm in the future.
223

Nízkošumový zesilovač pro pásmo S / Low Noise Amplifier for the S Band

Benites Ayala, Ivan Alejandro January 2019 (has links)
This master's thesis presents the design and the realization of a low noise amplifier (LNA) for the S band of radio frequency spectrum from 2.3 GHz to 2.4 GHz. This thesis is mainly focused on stability and impedance matching networks study. Ansoft Designer and ANSYS HFSS programs are used for this design to simulate the LNA. Different low noise devices are simulated in order to find the best results for the final design. Moreover, a coaxial cavity resonator is designed in the input of the LNA and works as a band pass filter. Finally, the LNA is fabricated and its properties compared with the simulation results.
224

Podnikatelský záměr - založení nového podniku / Business Plan - Starting a New Company

Pospíšil, Jakub January 2020 (has links)
The subject of this diploma thesis is the creation of a business plan for the construction of a ski resort using the methods of quantitative research and strategic analysis which will be implemented through a newly established company. These tools are a part of the analytical part of the thesis and at the same time they serve as a basis for the actual solution proposals. The proposal part introduces the business plan itself, which is analyzed primarily through the marketing mix and financial plan, which leads to the final recommendation whether to implement the project or not.
225

Návrh konceptu separátoru kapaliny pro systém vodního vstřikování u zážehového motoru / Design of the condensation separator unit for water injection system for spark ignition engine

Burjeta, Michal January 2020 (has links)
Tato práce je zaměřena na systém vodního vstřikování a způsoby zajištění dostatečného množství potřebné kapaliny pro správný chod tohoto systému. Jedním zajímavým a nezávislým řešením je využití odpadních produktů motoru, a to vodní páry produkované spalováním paliva. Pro zajištění kondenzace je nutné zchlazení výfukových plynů pod rosný bod páry, což lze zajistit opatřením výfukového potrubí chladiči. Vzniklý kondenzát je pak potřeba efektivně oddělit od proudu plynů a zachytit. Návrh takovéhoto systému vychází z reálně naměřených dat a jeho následným ověřením pomocí CFD simulace.
226

Podnikatelský záměr – založení provozovny na zpracování a prodej hovězího masa / Business Plan - Establishment for Processing and Sale of Beef Meat

Uchytil, Jan January 2021 (has links)
Abstract The master‘s thesis deals with the creating of business plan of the establishment for the processing and sale of beef. The thesis is divided into three main parts. The first part summarizes the theory, which contains the necessary theoretical background within which the analytical and solution proposal part is processed. The second main part is the analytical part, which summarizes the results of the questionnaire survey and strategic analysis. In the last solution proposal part, the business plan itself is created.
227

Vstupní díl UHF přijímače s velmi nízkou spotřebou / Tuner for UHF Receiver with Low Power Consuption

Kaštánek, Martin January 2008 (has links)
The purpose of this work was to make a proposal for input parts of receiver for band 430 to 440 MHz. A model of chosen semiconductor triode BFP540 was created in simulation software. Possibilities how to decrease consumption of this semiconductor triode, keeping the profit, were investigated through the simulation.In compromise consumption, keeping the profit of the amplifier - an optimal operating point for this semiconductor triode UCE = 1,2 V and IC = 2 mA was found. It was tested through the testing wiring with noise microstrips conformity. Ascertained knowledge was used for construction of tuner for UHF receiver. An operating point of input amplifier of UHF receiver was owing to power supply amplifier forced for bigger effectiveness to UCE = 2,65 V and IC = 2,0 mA. Suppression of mirror frequency is provided with Helix filter of the third order, because of intermediate frequency 10,7 MHz. Mixing on intermediate frequency is made again by semiconductor triode BFP540. Selectivity of receiver is provided with intermediate frequency crystal filter 10,7 MHz with bandwidth 15 kHz. Designed input part enables reception of SSB, FM and digital types of modulation.Bandwidth intermediate frequency exit is adapted to this request To receive particular modulation , it is necessary to complete intermediate frequency signal way with appropriate intermediate frequency filter.
228

Minimalizace vlivu rušení na bezdrátovou síť / Minimizing the effect of interference on wireless network

Doležal, Jan January 2008 (has links)
This thesis is concerned the technology with technologies of transfer through wireless devices. It is about possibilities of optimization of transfer in wireless net, especially of the reduction of interference influence. The first part is about theory and the standards development of wireless technology. There are methods and principles used in wireless technologies. The second part is a practical measuring and testing of an internal wireless net, with the emphasis being on the source of interference influence. Measuring was focused on interference between access points and was not about meteorological influence. It continues with theory and testing of interference of the microwave oven in our wireless net. Then, it is a practical demonstration of interference in an external environment. There are practical examples of interference between different providers’ nets on the same area and solutions to prevent or to cancel this interference. In next part of work the wireless net is parsed and described in a given territory. Here is described the way how to precede the reciprocal interference and eventually how this mutual disturbance suppress. Consequently, our net is optimized for customer growth and for today’s options of newer and more powerful components for wireless transfer. Finally there are two laboratory tasks. The first one is about practical measuring and testing of wireless net’s parameters and the second one is about simulation of wireless networks in the Opnet program.
229

Metodika měření kvality služeb ve Wi-Fi sítích / Methods for Quality of Service measurement in Wi-Fi networks

Bachan, Jiří January 2008 (has links)
This work deals with the wireless Wi-Fi networks, that used unlicenced ISM frequency band 2,4 GHz. These wireless networks are very extended in these days and used mainly for the Internet connection. With the multimedia data transfers expanding it’s necessary to ensure the specific quality of service QoS in wireless networks mainly for applications, which are sensitive to delay or packets lost. The main aim of this work is to describe Wi-Fi networks based on IEEE 802.11b/g/n standards, description of QoS techniques according to IEEE 802.11e standard and description of parameters describing QoS for the VoIP services. The practical part is divided on a two parts. The problems of measuring the radio link quality and the creation of simple program for quality of wireless connection analysis are solved in the first part. The second part incluledes measuring of the lost packets number in Wi-Fi network with the commercial application AirMagnet Laptop Wireless LAN Analyzer and measuring of the signal noise influence with the help of spectrum analyzer and vector signal generator.
230

Hledání objektů v obraze / object matching

Mišta, Petr January 2009 (has links)
Detection of objects based on color is not commonly used method of computer vision. There are many methods thats deals with the detection of significant points, but the color information has been omitted. The goal of this thesis is to design method of the detection significant color image areas and these areas match up with areas detected in another image. I analyzed features of detectors required to identify the reciprocal correspondence of images, defined the color significance concept, described basic color models and their properties, and a design of statistically compiled data - based method was described. Algorithms for the detection of color use color models RGB and HSV. Correspondence of areas detected in different images is performedy Kohonen neural network. The first input vector can teach Kohonen neural network and the second vector is classified by this network. To remove erroneous classifications RANSAC method is used. As a result, the method can be used for basic and rapid determination of correspondence between images, or to speed up commonly used methods for detection of significant points. At the end of the thesis are presented programs, showing functionality and options of design methods. The designed algorithms have been developed in MATLAB.

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