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Thematische Bibliographien / DoS odolnosť / Dissertationen

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Dissertationen zum Thema „DoS odolnosť“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

Čajágiová, Martina. "Odolnosť ľudského pachu voči chemickým detergentom." Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-260847.

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In the recherche part of our thesis we familiarize ourselves with the human odor, theories of its origin, definition, anatomy of human skin and odors, composition of individual human odors and with odor secretion. We also look closer on the topics of odor absorbent and its use in the world, the transmission of odors to odor sensors and securing of scents. This section of our thesis discusses the resistance and survival abilities of odor, scent identification method and its history, organic acids, and defines the application of laundry detergents and ultrasonic washers. Aim of our the

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2

Tamaškovič, Marek. "Rychlý, škálovatelný, a DoS-rezistentní proof-of-stake konsensuální protokol založen na anonymizační vrstvě." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445480.

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V tejto práci sumarizujeme aktuálny výskum protokolov z rodiny Proof-of-Stake ako napr. Algorand, Tendermint a LaKSA. Analyzovali sme ich funkcionalitu a tiež ich problémy. V rámci výskumu sme implementovali a novy protokol z rodiny Dôkaz-Podielom, ktorý rieši nájdené problémy ako priepustnosť, škálovatelnosť a bezpečnosť.

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3

Smrž, Peter. "Odolnost slinutého karbidu vůči vzniku a šíření tepelných trhlin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230951.

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This thesis aims to compare the relationship of physical-mechanical properties of tool materials made of WC-Co sintered carbides with their resistance to initiation and propagation of thermal cracks. The paper presents the results of testing the basic physical-mechanical properties of the three samples sintered carbides with different percentage of Co binder. Next, this thesis describes the progress and results of quench experiment and cutting tests using, which was described resistance of the tested samples to thermal and mechanical shock, depending on the values of physical-mechanical proper

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4

Tkacz, Jakub. "Korozní odolnost konstrukčních slitin hořčíku." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-233384.

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This thesis describes magnesium alloys, their properties and methods of their production. However, experimental part is focused on AZ91 magnesium alloy. Conversion coatings were prepared on the AZ91 surface – chromate coating, phosphate permanganate coating and fluoride coating. Corrosion resistance of the prepared coatings were compared by immersion tests and by potentiodynamic methods. Evaluation of corrosion resistance by immersion tests was successful only for phosphate permanganate coating. Only this coating was removed during cleaning of the samples. For comparison of corrosion resistanc

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5

Müller, Peter. "Korozní odolnost litých duplexních ocelí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417137.

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The master’s thesis deals with corrosion resistance of cast duplex steels. In the first part the corrosion mechanisms and their individual types are described, the second part characterizes the types of stainless steels in terms of their properties, use, structural components, and their impact on mechanical and corrosion properties of steels. Individual chapter is dedicated to duplex steels. In the experimental part the resistance of 1.4517 steel against pitting corrosion depending on the alloy contents and the PREN value was investigated. Four specimens graded according to PREN were cast. Sup

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6

Rous, Vojtěch. "Odolnost asfaltových pojiv proti stárnutí." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226448.

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Asphalt binder ageing and experiences with various ageing methods from abroad are described in this thesis. The practical part deals with the RTFOT aging and with the influence of the duration of this test. The comparison of test results is conducted before and after the aging by values of needle penetration, elastic recovery, softening point and resilience tests are evaluated and compared.

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7

Palková, Michaela. "Korozní a chemická odolnost konverzních povlaků." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216912.

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The purpose of the thesis was to study chemical and corrosion resistance of selected conversion coatings. The corrosion and the possibilities of corrosion protection with focus on conversion coatings on aluminum and steel surface were described in the theoretical part. In the experimental part corrosion and chemical resistance of samples without the next treatment and samples with polyester powder coating and synthetic coating were tested.

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8

Horák, Karel. "Tepelná a mechanická odolnost zinkového povlaku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228774.

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The work is aimed at studying the thermal degradation of the protective zinc coating. Its large part deals with the structure of the various stages of transition and their arrangement, the main emphasis is on analysis of brittle intermetallic phases, which arise due to increased temperature. Conclusion of the work is trying to clear itself causes degradation of this protective layer.

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9

Sobola, Petr. "Únavová odolnost extrudované Mg-slitiny AZ91E." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231941.

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This thesis deals with fatigue behaviour of magnesium alloy AZ91E produced by extrusion. In the frame of this work, basic mechanical characteristics and data from performed fatigue tests were obtained. Further metallographic analysis of microstructure and fractographic analysis of broken specimens after fatigue tests were carried out.

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10

Mikel, David. "Korozní odolnost součástek z polyamidu a polykarbonátu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2018. http://www.nusl.cz/ntk/nusl-376889.

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The influence of two lubricating and cleaning agents and diesel fuel on environmental stress cracking of polyamide reinforced by glass fibers and polycarbonate was studied in this master thesis. Testing of environmental stress cracking was performed by the method of critical bending deformation. Bergen elliptical strain jig was used for testing. The test liquids caused varying levels of environmental stress cracking of amorphous polycarbonate, but they did not cause environmental stress cracking of glass fiber reinforced polyamide. The test method used allows testing the resistance of both mat

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11

Henc, Petr. "Studium vybraných faktorů ovlivňujících odolnost lepených spojů." Doctoral thesis, Česká zemědělská univerzita v Praze, 2015. http://www.nusl.cz/ntk/nusl-259624.

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The aim of the thesis entitled "Study of some factors affecting the adhesive bonds durability" is description of factors that affect the mechanical properties (strength and hardness). The theoretical part of the thesis discusses the bonding chemical nature and bonding technology description. Various factors that may lead to degradation of bonded joint are described here too. The experimental part deals with the influence of the environment on adhesive or bonded joint. For a comparison epoxy and methylmetacryle adhesives were tested. All experiments were performed in compliance with standards Č

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12

Kulhanová, Veronika. "Korozní odolnost povrchových úprav polysiloxanovými nátěrovými systémy." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-216872.

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Influence of atmospheric and chemical environments on metal products leads usually to the corrosion damage. This master´s thesis deals with way to protect metals from corrosion, especially by polysiloxane coatings in combination with coatings containing zinc. Corrosion resistance of created coatings systems is tested by laboratory accelerated tests in corrosion chamber, where the natural atmospheric conditions are simulated. Chemical resistance in selected environments is verified by drop test. Quality characteristics coatings – thickness, adhesion to the underlying material, hardness and stab

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13

Růžek, Václav. "Předcertifikační testy elektromagnetické odolnosti." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-364603.

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The doctoral thesis deals with aspects of pre-certification tests of electromagnetic immunity in the automotive industry. The thesis analyses commonly used test methodology and mentions that standardized electromagnetic immunity tests performed by certified testing centres, which are extremely expensive and represents a considerable time load in the development of the vehicle. The thesis therefore proposes innovative ways for replacement of certification tests with an acceptable level of uncertainty. Key methods are seen in numerical simulations and modified test procedures when the vehicle is

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14

Jindra, Daniel. "Stanovení požární odolnosti konstrukcí." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392030.

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Possibilities of modeling non-linear behavior of concrete within standard room temperatures and increased fire-load values using FEM software ANSYS are studied. Temperature dependences of material models are considered. Fire resistance of reinforced concrete and concrete-steel composite construction is analyzed. Fire loads are defined in accordance with relevant standards. Non-linear structural transient analyses are calculated after temperatures were determined by transient thermal analyses. Results obtained from analyses of simple reinforced concrete structure are compared with approach of i

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15

Černá, Hana. "Sledování vlivu složení betonu na odolnost proti abrazi." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392338.

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This diploma thesis focuses on the resistance of concrete to abrasion with regard to the raw materials used for their production. In the theoretical part of the thesis are described admixtures, different types of aggregate and aggregate composition which influence the resistance of concrete to abrasion. In the experimental part, 15 different C30 / 37, S4 concrete formulations were proposed. Different types of aggregates - fecal gravel (Žabčice), biotic granodiorite (Olbramovice) and amphibolite (Želešice) have always been used in the recipes. Fine ground limestone, micro-silica, high-temperatu

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Lehoťák, Roman. "Návrh betonové konstrukce s ohledem na požární odolnost." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2021. http://www.nusl.cz/ntk/nusl-444631.

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The diploma thesis deals with the analysis of internal forces and the design of the reinforcement of a reinforced concrete monolithic slab, a reinforcing wall and a column in the 1st floor of a dairy hall building. The fire resistance of selected structures was taken into account during dimensioning. The calculation of the internal forces was performed by the finite element method in Dlubal RFEM 5.24.

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Zápotočný, David. "Návrh betonové konstrukce s ohledem na požární odolnost." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409785.

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Diploma thesis deals with design of selected parts of reinforced concrete construction of a multi-storey building with respect of fire resistance. The proposed elements are reinforced concrete locally suported ceiling slab, selected column and wall. These structures are located in the storage hall on the 1st underground floor. Different variants of structural design are consulted and compared in this work. The calculation of internal forces is performed in the calculation software Scia Engineer 19.1. The thesis includes a structural design as well as drawings. The construction is designed acco

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18

Cieslar, Jiří. "Studium faktorů ovlivňujících odolnost proti opotřebení kovových materiálů." Doctoral thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-259632.

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This thesis investigates the suitable chemical composition of a iron alloy with improved wear resistance. A unique set of alloys with a specifically designated chemical composition was manufactured for experiments. Their properties in defined abrasive conditions was studied in laboratory conditions. Wear resistance was determined on an experimental bench with bound particles. Material properties description was always complemented with information gained during material metallographic structure investigations. All the results were compared with results achieved for commercially available wel

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19

Švindrych, Jan. "Vyhodnocování napěťových událostí s ohledem na odolnost spotřebičů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217198.

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This diploma thesis deals with evaluation of voltage events regarding to immunity of electric appliances. This thesis is divided into three logical sections. In the first part are shown the voltage events, their definitions, causes and spreading in the mains. The second part deals with measurements and existing possibilities of evaluation of voltage events. The third part deals with suggestion of new evaluation of voltage events regarding to immunity of electric appliances and verification in practice.

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Valach, Michal. "Odolnost komunikační jednotky LAN proti útokům z Internetu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217984.

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This thesis is focused on crypto-module RCM 3700, which is used for encrypted data transmission. Following work analyses basic network protocols and some sort of attacks in Ethernet network. The main goal of these attacks is to collect information and services about the device and to analyze transmitted data. Based on these information attacks can be done more precisely than without them. The main target of these attacks is the denial of particulary service or data abuse. Furthermore, in the diploma thesis configuration of router CISCO 2801 is applied in order to improve the LAN security. The

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Bok, Jaromír. "Odolnost spotřebičů na krátkodobé poklesy a výpadky napětí." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-233532.

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This Ph.D. thesis deals with problems about voltage dips and short voltage interruptions, generally named as voltage events, which origin in power supply networks and have a negative influence for all connected electric appliances. In this thesis single phase appliances are considered. These problems closely relate with area of electromagnetic compatibility which solve all questions about correct operation of different types of electric appliances during electromagnetic disturbances impact. Voltage events are ones of the many types of electromagnetic disturbances. The connection between distur

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22

Mičkal, Petr. "Odolnost FRP kompozitních materiálů vůči působení vybraných agresivních prostředí." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-295666.

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This thesis deals with monitoring of the durability of FRP reinforcements in alkaline environments with differing temperature exposures. The theoretical part of the thesis consists of a general description of the FRP composites, the manufacturing of these FRP reinforcements using pultrusion technology, the resistance of these composites in aggressive alkaline environments, and the influence of temperature on the speed and manner of degradation. In the experimental part of this thesis, the FRP reinforcements were placed in an alkaline environment tempered at different temperatures (20 °C, 40 °C

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Remeš, Josef. "Mechanická odolnost povlakových hydroizolací vůči poškození prvky konstrukční ochrany hydroizolace." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-390257.

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Waterproofing membranes are one of the most commonly used waterproofing insulation materials. These can be found both in assemblies of roof constructions and substructures and are a key component for waterproofing systems. During design process it is necessary to select materials, elements and accessories so that mutual compatibility, waterproof effectiveness and reliability is ensured. In order to protect the main waterproofing layer a composition is therefore completed with construction protection elements, which are meant to prevent from a mechanical damage of waterproofing membrane. Mechan

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Zelinka, Tomáš. "Nástroj pro testování odolnosti webových služeb." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236180.

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This project deals with testing of web services. The result of this work will be a tool for load testing of web services using fault injection in their communication. The first part of the project discusses the basic aspects of testing web services. The second part of the work is more focused on testing high loads in combination with fault injection. The tool will allow automated run of the tests. The distributed model of the tool was designed to simulate real loads. In the last chapter are summarized achieved results.

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Rybařík, Ladislav. "Zkušební zařízení mechanické odolnosti termostatických hlavic." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228768.

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The focus of this Master’s thesis is on designing a device for testing the mechanical endurance of thermostatic valves according to the EN215 standard. The endurance tests under the influence of torque and bending moment are the main probléme it deasl with. The thesis contains engineering design of the testing device and it also includes mechanical drawings, design of sensors and measuring algorithm. The design of a water circuit used for water conditioning for the trstiny device is also included.

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Hurtiš, Maroš. "Využití vedlejších materiálů z výroby kameniva do vozovky." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392252.

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The master thesis deals with the possibilities of using waste aggregate from main rock production to hydraulically bound mixtures, witch are used in base and sub base pavement. The theoretical part describes conditions and properties of bound mixtures, aggregates and cement. The practical part describes the process of design, mixture preparing and laboratory test carried out on them. The bound mixtures are testing in compressive strength, frost and water resistace and resilient modulus.

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Petráš, Roman. "Únavová odolnost a mechanizmy únavového poškození v materiálech pro vysoké teploty." Doctoral thesis, Vysoké učení technické v Brně. CEITEC VUT, 2021. http://www.nusl.cz/ntk/nusl-433631.

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Superaustenitická korozivzdorná ocel typu 22Cr25NiWCoCu určená pro vysokoteplotní aplikace v energetickém průmyslu byla studována za podmínek nízkocyklové únavy při pokojové a zvýšené teplotě. Jednotlivé vzorky byly podrobeny různým zátěžným procedurám, což umožnilo studium materiálové odezvy spolu s mechanismem poškození. Křivky cyklického zpevnění/změkčení, cyklického napětí a Coffin-Mansonovy křivky byly vyhodnoceny. Únavová životnost materiálu byla diskutována s ohledem na uplatňované mechanismy poškození, které se vyvinuly za specifických zátěžných podmínek. Standardní izotermální únavové

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Vovesný, Václav. "Studium vlastností plniv do kompozitů s požadavkem na vysokou teplotní odolnost." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240440.

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The diploma thesis is focused on the behaviour of natural and synthetic aggregates and their behaviour in polymer – cement composites, while being exposed to high temperature. The processes, happening in aggregates and mortar under the thermal load, were described in the theoretical part of the thesis same as the testing of heat effects on the aggregates and mortar. Further, the influence of high temperature on each component of concrete was described, followed by the suggestion of the appropriate components for concrete exposed to high temperature. Various aggregates were tested in the experi

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Másilko, Jiří. "Zvyšování odolnosti MDF kompozitů proti působení vody." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216350.

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The subject of the diploma thesis is the study of moisture resistance of macrodefect-free (MDF) cements based on calcium-aluminate cement and polyvinylalcohol used as polymer. MDF cements are perspective materials providing unique properties relative to traditional cement pastes with great potential to incoming constructional utilization. But it is known that MDF cements exhibit sensitivity to water, with swelling and reduction of strength. Therefore the work is aimed in monitoring of an organic polymer effect on the moisture resistance of MDF materials and phase changes. Aluminate cement (SEC

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Klauda, Zbyněk. "Návrh sběrnice LVDS s vysokou odolností EMC." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217695.

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My thesis deals with project of LVDS busbar with high resistivity with regard to disturbance from surroundings and radiation undesirable electromagnetic waves into its environment. Project of LVDS busbar was elaborated by numeric methods and it was suggested optimal solution of the shape and material of multiply technology DPS. The project was realized on desired driving-point impenance of busbar Z=100 ohm with frequency f1=100 MHz of the first harmonic component rectangular signal of defind modality, entering and diagonal edge.

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Podzámsky, Rastislav. "Automatizované pracoviště pro zjištění mechanické odolnosti šroubovaček." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377044.

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The diploma thesis deals with the design of an automated testbed for mechanical stress testing of electrical screwdrivers. When designing an automated testbed, real-time measurements were used. The work deals with the transfer of measured data using MQTT from a remote computer to the PLC and with the HMI to increase user comfort. The main priority of the work was to simplify the hardware and thus reduce the cost of the automated testbed.

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Kotrlová, Janka. "Etiketovacie lepidlá so zvýšenou odolnosťou voči vlhkosti." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216950.

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The main topic of the thesis was to examine the hydrophobicity of labeling adhesives in the state before drying, it means their resistance against condensated moisture. The problem was solved by measuremensts of contact angle between the drop of water and glue. Measurements of dynamic viscosity and wet tack were also performed for the sake of complex characterization of the glue properties. Comparison of properties among single-component adhesives based on the acrylic copolymers alkalised with various agents was made. The impact of starches and industrial additives on glues was determined by t

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Miléřová, Miluše. "Studium odolnosti bakterií vůči vybraným stresovým faktorům." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-240552.

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The aim of the master thesis was to study the effect of the accumulation of polyhydroxyalkanoates (PHA) for bacterial resistance to selected stress factors. In the theoretical part the selected stress factors, polyhydroxyalkanoates and the involvement of polyhydroxyalkanoates into stress response of bacteria were reviewed. In the experimental part we used bacteria Cupriavidus necator H16 and its mutant strain Cupriavidus necator H16/PHB-4 unable of polyhydroxybutyrate (PHB) accumulation. The resistance of above-mentioned bacterial strains against thermal and osmotic stress was tested. Accordin

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Šefčíková, Lucie. "Analýza faktorů ovlivňujících krizovou odolnost a připravenost podniku v odvětví cestovního ruchu." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-17291.

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The main aim of this thesis is to analyse actual development of company in tourist trade sector and focus on threats and risks of business in this field. The theoretical part is focused on the tourist trade area and at the same time it reports common information about crisis management. It also defines methods of analysis, which can be used in order to achieve better immunity and preparedness of company against any criris. Afterwards in practical part the thesis describes surveyed hotel Krystal and with the help of SWOT analysis and another three methods discloses threats, which are actual for

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Müller, Jiří. "Kotevní silikátový expanzní materiál se zvýšenou teplotní odolností." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392344.

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This master thesis deals with the development of an expansive anchor material. This material is intended especially for the engineering and power industry where the operating conditions cause thermal stresses of the anchor. In order to meet the requirements for a firm and secure connection of the anchored part, it is necessary to achieve excellent physical-mechanical properties of the developed material such as high compressive strength, high tensile strength based on the base, and resistance to thermal stresses till 200 ° C. All of these processes must be achieved after the ageing of the ceme

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Těžká, Adéla. "Studium odolnosti povrchových úprav ETICS vůči biotickému napadení." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409773.

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This diploma thesis deals with the study of resistance of ETICS surface treatments to biotic attack. The theoretical part elaborates a research focused on biotic attack of facades of buildings insulated by contact insulation systems ETICS. Based on the information obtained during the elaboration of the bachelor thesis and further study, the optimization methodology of ETICS surface treatment resistance to biotic attack proposed in 2018 is elaborated. In the practical part, the proposed methodology is verified, evaluated and recommendations concerning the suitability of using the proposed metho

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Žůrová, Marcela. "Příprava MDF kompozitů se zvýšenou odolností proti vlhkosti." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-217160.

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The subject of the thesis is to improve the moisture resistance of MDF (macro-defect-free) composites prepared on the basis of aluminous cement and polyvinyl alcohol. These materials are characterized by the absence of defects in the structure and high mechanical performance. These features make MDF composites a promising type of material that could be used in the future for construction purposes. The basic deficiency of MDF composites is insufficient resistance to water or moisture, accompanied by a significant decrease in strength. Therefore, this work deals with increasing of moisture resis

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Mikulinec, David. "Betony s vyšší odolností vůči působení vysokých teplot." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225537.

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The result of this master’s thesis is acquaintance with the issues of cement concrete resistance to high temperatures. This work describes the processes ongoing in the structure of concrete at extreme thermal loads and analysis of effects of high temperatures on the individual components of reinforced concrete structures is given, then influence of high temperatures and fire on the aggregates, matrix, reinforcement steel and the resulting changes in their properties. In the experimental part is given design of composition of concrete with a higher resistance to high temperatures and subsequent

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Šottl, Jiří. "Vývoj správkové malty s odolností proti vysokým teplotám." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226731.

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Currently, increasing reinforced concrete structures and concrete structures that require repair in the form of remediation. The master’s thesis deals with the development of repair mortars with resistance to high temperatures, which would allow the re-profiling of the fire damaged parts of the structures and restore its function. Development of repair mortars is based on a literature review of articles dealing with research materials resistant to high temperatures.

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Kučera, Vít. "Studium odolnosti lepené spáry dřeva proti vyšším teplotám." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265260.

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In this time are for design of wooden elements available simplified procedures for fire modeling which defines ČSN EN 1991-1-2. But it is not experimentally tested the impact of adhesive on the final value of fire resistance of laminated panels. This diploma thesis solves basic normative practices that could explain the durability of glue bond against increased temperatures. in the practical part will be undertaken to experimentally assess the impact of various kinds of adhesive-based (epoxy, formaldehyde, PUR and EPI) on the glued bond durability against increased temperature. Glued joints th

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Kotland, Vojtěch. "Charakterizace korozní odolnosti nikl-fosforových povlaků na hořčíkových slitinách." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-376815.

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This master’s thesis is focused on corrosion resistance of nickel-phosphorus coatings on magnesium alloy AZ91. In the theoretical part is summarized current knowledge about magnesium alloys and electroless deposition of Ni-P coatings including ongoing reactions. Theoretical part also lists all substances contained in the nickel bath and their specific use there. In the second half of theoretical part are discussed corrosion and immersion tests. Theoretical part is ended by review aimed towards the research in areas of immersion tests. Experimental part describes individual steps of pretreatmen

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Nehybka, Josef. "Příprava historických pojiv s vysokou odolností proto okolním vlivům." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401936.

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This master’s thesis is focused on preparation of the mortar mixtures inspired by roman cement with a great resistivity against the corrosion environment, especially a seawater. There were prepared samples of a roman cement containing of pure lime and various artificial pozzolans and natural tuff which were used as pozzolan admixtures. The task of this work is to explore possibility of using pure lime and for example pozzolan admixture which can resist against the corrosive environment like a roman cement. There were prepared a lot of various samples which were tested separately on their mecha

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Pivodová, Alena. "Návrh železobetonového objektu s ohledem na požadavky požární odolnosti." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392070.

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The diploma thesis deals with an analysis of internal forces of B4 reinforced construction of an office building. Analysis takes into account interaction with subsoil and when designing structural parts of the building, different requirements for fire resistance of a structure are taken into account. A Dlubal RFEM 5.17 program was used for finite element analysis, and model functionality verification was performer by using a summation of moments method. The thesis deals with the design and assessment of a point-supported slab, column, inner and external walls.

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Maláková, Dana. "Zhodnocení odrůdové odolnosti vybraného sortimentu zeleniny vůči houbovým patogenům." Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-258755.

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The aim of this Diploma thesis was to assess the cultivar tolerance of a chosen assortment of butterhead lettuce, leaf lettuce, iceberg lettuce and cabbage to fungal pathogens (Bremia lactucae, Fusarium oxysporum f. sp. conglutinans). The experiment was conducted in the laboratory conditions of the gardening department FAPPZ of the Czech University of Agriculture in growth chambers. The lettuce experiments were done in given conditions with the temperatures of 18 - 20 °C under the regime 12 hrs. of light and 12 hrs. of darkness. The cabbage experiments were conducted in given conditions under

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Repka, Martin. "MDF kompozity AC-PVAl se zvýšenou odolností proti vlhkosti." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-216599.

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Polymerem impregnované cementové materiály představují zajímavou a perspektivní alternativu klasických portlandských cementových past. Hlavním zástupcem těchto materiálů jsou macrodefect-free (MDF) kompozity, složené z anorganického pojiva a organického polymeru. I přes řadu vynikajících mechanických vlastností je plné zavedení MDF kompozitů na trh omezené především z důvodu jejich relativně nízké odolnosti vůči vlhkosti. Jednou z možností jak zvýšit odolnost výsledného MDF vůči vlhkosti je „in situ“ síťování polymeru. V této práci byla připravena počáteční série MDF kompozitů na bázi hlinitan

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Kakvic, Martin. "Metody zabezpečení IP PBX proti útokům a testování odolnosti." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-220331.

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This diploma thesis focuses on attacks on PBX Asterisk, FreeSWITCH and Yate in LTS versions. In this work was carried out two types of attacks, including an attack DoS and the attack Teardown. These attacks were carried out using two different protocols, SIP and IAX. During the denial of service attack was monitored CPU usage and detected if its possible to establish call and whether if call can be processed. The Security of PBX was build on two levels. As a first level of security there was used linux based firewall netfilter. The second level of security was ensured with protocols TLS and SR

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Hanzal, Jan. "Testování odolnosti sítí a ochrana před útoky odepření služeb." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220627.

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The aim of this Master thesis is a testing of Cisco ASA\,5510 firewall with affect of Denial of Service attacks. Part of the thesis is a teoretical description some of the attacks and practical tests. Practical part covers basic testing of Cisco ASA with Spirent Avalanche 3100B. Number of TCP connections per second and firewalls throughput on 7th layer of ISO/OSI model were tested. Also the effect of Denial of Service attacks on the throughput. In a next part there is described one possible way how to generate Denial of Service attacks from a Linux server to the firewall. Python scripts were u

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Vágnerová, Šárka. "Stres v pracovním prostředí." Master's thesis, Česká zemědělská univerzita v Praze, 2017. http://www.nusl.cz/ntk/nusl-262855.

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The diploma thesis deals with the issue of a stress load in the working environment, specifically of employees of the criminal police. The theoretical part provides a general definition of basic concepts such as stress, personality or resistance. It introduces the various types of stress, its symptoms, causes and possible responses to psychological stress. The larger section is devoted to stress in the working conditions. It describes the most common stressors, risk of a burnout and possibility of stress reduction in general and directly for the police officers. The knowledge gained from the t

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PIPALOVÁ, Zuzana. "Testování odolnosti vybrané populace semenáčů révy vinné na odolnost k plísni révové." Master's thesis, 2006. http://www.nusl.cz/ntk/nusl-45703.

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Verner, Petr. "Odolnost kovových povlaků proti korozi." Doctoral thesis, 2005. http://www.nusl.cz/ntk/nusl-92846.

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