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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.
271

Problematika zvyšování podílu R - materiálu v asfaltových směsích / The issue of increasing the proportion of reclaimed asphalt in asphalt mixtures

Urbanec, Luboš January 2013 (has links)
The subject of this Ing. thesis is asphalt mixture with increasing RAP (Reclaimed Asphalt Pavement). The theoretical part defines the terms of recycling and RAP and types of recycling. The practical part is devoted to the production and testing of asphalt mixtures with different volume RAP. The proposed asphalt mixture is asphalt concrete for base layer ACP22 +. Content of RAP in mixtures is 0%, 30%, 50% and 70%. As a special additive to soften the asphalt from RAP is used ingredient STORFLUX. For each mixture are established modulus stiffness of asphalt mixture and determined fatigue characteristics of asphalt mixture. The identified properties are compared for the different representation of RAP.
272

Vývoj a zkoušení vysokohodnotných betonů pro subtilní konstrukce / Development and testing of high performance concrete for subtle structures

Myšičková, Lucie January 2014 (has links)
Thesis describes properties of HPC compared to concretes of normal and high strength. It further describes the input materials and the procedure for designing the composition of the mixture. It gives examples of already completed structures made of HPC. The experimental part describes the optimization of concrete mix and production of specimens. In the end results of testing the properties of the developed mixes from tests of dynamic and static modulus of elasticity, compressive strength and tensile strength by bending are described.
273

Analýza nejistot nepřímých měření / Uncertainties Analyze of Indirect Measurement

Fišr, Petr January 2010 (has links)
This diploma thesis is engaged with problems of expressing measurement uncertainty especially for indirect measurements. This issue is shown here on a few simple examples. Part of this work is a calculation module for the determination of measurement uncertainties, applied to the role of the laboratory 'measurement of the flow orifice.
274

Aplikace Free flight v rámci evropského vzdušného prostoru / Application of the free flight concept in European airspace

Poláš, Přemysl January 2012 (has links)
The master thesis expresses the opinion on application of the Free Flight concept in European Airspace. In the beginning, the reason and the circumstances for concept application are characterized from both theoretical and practical approach. Afterwards, the key technology elements are defined as well as the ideal approach for developing them. Especially system ASAS was a subject of the deep investigation. Then the system ADS-B is introduced with all related issue from a performance point of view. Finally, the main factors affecting the capacity of the ASAS system in specific area of Airspace are investigated.
275

Návrh a realizace modulů pro ověřování funkčnosti HW periferií mobilního robotu. / The peripheral testing module design for mobile robot.

Mašek, Petr January 2012 (has links)
This diploma thesis deals with design and realization of testing modules for detecting a defective peripheral in a mobile robot. One of the modules is intended for the diagnosis of ultra sonic range finder. The second one simulates the behaviour of these ultra sonic range finders, making it able to determine interface on which it is necessary to look for an error.
276

Využití termoelektrického generátoru pro zvýšení účinnosti otopného tělesa / Using thermoelectric generator to increase the efficiency of the radiator

Kříž, Pavel January 2015 (has links)
This diploma thesis deals with a design layout of the fan power supply that ensures the increase of the efficiency of the heating unit. For usage in the areas without electric power, the power supply is secured by thermoelectric generator. The system has to function on the basis of autonomous system which turns itself on only when necessary. In the introductory part of the paper there is a recherché of thermoelectric generators for general usage. Next it mentions the basic findings in from the field of DC/DC converters for low power applications. In this part attention is given to MPPT algorithm. Furthermore basic knowledge from the field of heat transmission together with its most used elements is described. Subsequently existing applications that increase the effectiveness of heating are mentioned. Their disadvantage however is that they depend on the external source of power supply. The practical part to a large extent covers the analysis of the suitability of the chosen thermoelectric module. For securing of the heat gradient of the generator there was a model created meeting the figures in the manual and there are several simulations in the MATLAB program. Furthermore several measurements of the thermoelectric module took place in order to secure realistic figures. Subsequently a DC/DC converter was chosen. Finally the testing was made on the real composition. In conclusion there is an overall evaluation including the real usage and the economical aspect of the project. The outcomes of the work enable to avoid common mistakes that are part of many specialized articles. The created system is to be used after the adjustment of the cooling to the required aim. At the same time it becomes very effective.
277

Analýza rizik navrhování staveb s ohledem na vybrané materiálové charakteristiky / Risk analysis of building design with regard to the selected material characteristics

Jirásková, Iveta January 2015 (has links)
This thesis focuses on the verification of physical and mechanical characteristics of hardened concrete, especially concrete compressive strength, static and dynamic modulus of elasticity. The job description is to perform a series of laboratory analyzes for structural concrete and evaluate the test results meet requirements that are specified in the European standards for designing buildings. The work also includes selected techniques for risk assessment (FMEA, Pareto diagram, Ishikawa diagram) and their application to selected process. Part of the work is also a static comparison of measured characteristics and consideration of the risks associated with variations in the monitored quantities.
278

Útoky na kryptografické moduly / Attacks on Cryptographic Modules

Daněček, Petr January 2008 (has links)
The conventional way of cryptanalysis is based on the cryptographic algorithms weak points examine. The attack model of conventional cryptanalysis covers mathematical description of the cryptographic algorithm used. This model is not with the relation to the physical model implementation and the real environment. Cryptographic algorithms currently used in the combination with strong cipher keys are almost unbreakable and the conventional cryptanalysis is ineffective. The new way of cryptanalysis employs the side channels. The model of cryptanalysis using side channels is enhanced with physical revelation of module performing the cryptographic operations. This dissertation thesis deals with cryptographic module description and studies influence of side channels to the security of this module.
279

Modulární dopravník / Modular Conveyor

Winter, Jaroslav January 2016 (has links)
This master thesis deals with a structural design of the modular roller conveyor which is part of the flexible assembly line of automotive seats. The work includes design and functional solution for a driven roller track. Present structural design of roller conveyors is summarized in the first part of the work.
280

Grafické rozhraní pro deskové hry na platformě Android / Graphical Interface for Board Games on Android Platform

Kasper, Valter January 2015 (has links)
This work presents a design and implementation of graphic user interfaces for board games. The objects of the investigation were various types of board games and graphic effects for virtual board game scene. We have developed a user interface design for different games. In the following sections the OpenGL ES library and its application to the Android platform are characterized. We explored the possibility of implementation in the native code. We have developed a system for plug-ins that allows implementing game logic in scripting language and defining the virtual scene for board game in XML language.

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