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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.
291

Zařízení pro měření proudění vzduchu pod vozidlem / Device for measurement the air flow under the vehicle

Šilar, Josef January 2015 (has links)
The target of this thesis is construction design of a device for measuring flow bellow a vehicle. To deep dive into the problem first there is theory of driving resistance, flow and aerodynamics followed by the practical part. Also it solves completion of CFD model to detect flow field bellow vehicle while using this device.
292

Návrh logiky řízení tvorby sekvence karoserií v oblasti vrchního laku / Motion control logic sequences making body in the topcoat

Křivánek, Filip January 2015 (has links)
This thesis describes the finish-painting area at ŠKODA AUTO a.s. company in Mladá Boleslav. The logistic operations and transporter technology in this production hall are described here. Furthermore this thesis is concerned to sequence making of car body before the finish-painting area. The output evaluation is make of experiments and comparison of influence of an old logic of choosing a colored block with a new control logic for car body with influence on the correct shifting of car body according to a sequence number. The containers for car body including all other workplaces of the painting area are created in the Plant Simulation program.
293

Analýza nelineárních jevů v ultrazvukové diagnostice / Analysis of Nonlinear Effects in Ultrasound Diagnostics

Čížek, Martin January 2009 (has links)
The model study of nonlinear effects in the ultrasound diagnostics is focused on developing and experimental verification of new computer algorithms for numerical modeling of the ultrasound field including nonlinear effects accompanying the ultrasound propagation in biological tissues. A theoretical analysis of nonlinearities in ultrasound propagation and their contribution to thermal and mechanical effects of diagnostic ultrasound applications was conducted. A numeric model of ultrasound propagating through a tissue model formed of a set of homogenous layers with defined physical parameters was developed in Matlab environment. The computation of ultrasound field spatial distribution is based on the angular spectrum method. For simulating of nonlinearities Burgers nonlinear wave equation is used. The resulting spatial distribution of the ultrasound field is described by the amplitudes of selected number of harmonic components of the acoustic pressure, by the mechanical index, by the harmonic distortion of the signal and by the spatial peak temporal average intensity of all considered components. The numerical model was experimentally verified using an unique ultrasound measurement system – the ultrasound measurement basin. The verified numeric model was used for assessing the veracity of mechanical index and tissue heating prediction during ultrasound applications in cases when the nonlinear effects are neglected in computations. The reliability of the mechanical index indicated by the diagnostic ultrasound instruments is also evaluated using the designed numeric model. The aim was to compare the indicated value usually obtained by derating the measurements in a water medium to the actual mechanical index present in the insonated tissue.
294

Mechanické vlastnosti mikroelektronických systémů / Mechanical Properties of the Microelectronic Systems

Psota, Boleslav January 2015 (has links)
This paper deals with the behavior of electronic assemblies, which are loaded by the vibrations, especially in the context of computer simulations use. The main objective is to establish a procedure for determining the influence of vibration on the electronic boards and components using computer simulation; the definition of all factors affecting the accuracy of the result and evaluation of the individual influences.
295

3D autoškola / 3D Driving School

Langr, Petr January 2015 (has links)
This thesis deals with 3D Driving School simulator development, especially with control compliance of traffic rules. Thesis introduce game engine Unity 3D, which was the key factor of creating simulator. Game development in thesis begins with model and ends with scripting object behaviour.
296

Modelování směrovacího protokolu Babel / Modelling of Babel Routing Protocol

Rek, Vít January 2015 (has links)
This thesis deals with the simulation of a Babel routing protocol. The goal is to create implementation of simulation model for OMNeT++ simulator. The text includes a description of the protocol and basic principles of computer network simulation in OMNeT++ environment using an INET library. Furthermore, the text discussed existing implementations and submits a proposal of a simulation model, followed by description of its implementation. Finally, the correctness of created model is verified.
297

Modelování distance-vektor směrovacích protokolů / Modelling of Distance-Vector Routing Protocols

Trhlík, Jiří January 2013 (has links)
This master thesis deals with the implementation of the RIPng routing protocol in the OMNeT++/INET environment. It describes the RIPng protocol and its specifics on the Cisco devices. It clarifies important concepts such as IPv6 and distance-vector routing protocols. The thesis also describes the OMNeT++ environment and the INET Framework, where it focuses on the current status of implementation of the components required for the RIPng protocol integration.
298

3D Autoškola / 3D Driving School

Řeháček, Prokop January 2014 (has links)
The main topic of this thesis is to create a simulator for educational purposes, which is able to simulate the traffic situations and to control the compliance of traffic regulations. Modern game engine Unity 3D and development of simulator in C # for this engine are introduced within this thesis. Creating a simulator or computer game in general, imposes multiple requirements in different disciplines, and therefore, this work deals with themes such as the creation of 3D models, work with audio content, design of virtual city model, etc.
299

Modelování směrovacího protokolu EIGRP / Modelling of EIGRP Routing Protocol

Bloudíček, Jan January 2014 (has links)
The network simulation allows analysis of the computer networks behavior and configured protocols. This thesis focuses on the EIGRP routing protocol and its integration into the OMNeT++ simulation enviroment. The text includes a detailed description of the protocol and its configuration on Cisco devices. Furthermore, the text focuses on design of extension that supports routing protocol. The following describes implementation of the protocol according to design. Finally, the implemented solution is compared with the output of real devices.
300

Fingerprint Damage Simulation / Fingerprint Damage Simulation

Kanich, Ondřej January 2014 (has links)
Cílem této práce je návrh a implementace aplikace pro simulaci poškození umělého otisku prstu. Při studiu jsem se soustředil hlavně na projekt SFinGe, který je průkopníkem v této oblasti. Specifikoval jsem přesněji oblast zájmu na optický či kapacitní senzor a poškození otisků prstů v závislosti na tlaku a vlhkosti, poškození a pošpinění senzoru a deformaci pokožky. Navrhl jsem způsob implementace těchto vlivů poškozujících umělý otisk prstu tak, aby se lépe podobal reálným otiskům. Tyto metody využívají morfologické operátory a model plastického zkreslení u otisků prstů. Výsledky nejúspěšnějších metod mají o 62.5% horší skóre v komerčním produktu oproti originálu a o jednu třídu horší hodnocení dle normy pro kvalitu obrazu otisku prstu. Přínosem této práce je tedy poškození umělých otisků tak, že prokazatelně dosahují horších výsledků než originál a návrh aplikace, která umožňuje rozšíření o další metody.

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