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Disperzní částice v hliníkových slitinách
Veselý, Jozef ; Cieslar, Miroslav (vedoucí práce) ; Karlík, Miroslav (oponent)
As a preparation for the study of dispersed particles in the aluminium alloys the ALCHEMI method was tested on a simple model material. This method combines the X-ray spectrum analysis and the dynamic diffraction to provide the information on site occupancies. The site preference of Cr in the Fe3Al and FeAl materials was studied. Measured variation of the X-ray yields with the orientation near the Bragg position was fitted by the calculated curves. We found that 70 resp. 80 % of Cr occupy the Al sublattice.
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PHASE EVOLUTION IN Ni-48 at.% TI SHAPE MEMORY ALLOY PREPARED BY SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS
Karlík, M. ; Haušild, P. ; Beran, Přemysl ; Novák, P. ; Čapek, J. ; Kučera, V. ; Kopeček, Jaromír
In Ni rich Ni–Ti alloys, various phases such as hexagonal Ni3Ti, cubic NiTi2 and rhombohedral Ni4Ti3 appear during heat treatment. The presence of these precipitates affects the shape memory effect and superelasticity in an important manner. In this paper we present a study of the phase evolution during annealing of the Ni–48at.%Ti shape memory alloy elaborated by self-propagating high-temperature synthesis (SHS). Morphology and crystallography of the phases were examined by means of light metallography, scanning electron microscopy (SEM), neutron and X-ray diffraction, transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). Besides the phases mentioned in the\nliterature, a Ni-rich phase with the composition near Ni3Ti2 stoichiometry and having a cubic symmetry was found. This phase develops from Ni4Ti3 particles during slow (furnace) cooling from the temperature of 1000 °C. Its particles have the form of thin platelets coherent with the (B2) NiTi matrix. The orientation relation is either cube-to-cube, [111]P || [115]B2 and (1-10)P || (1-10)B2 or [011]P || [011]B2 and (1-10)P || (1-41)B2.\n
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Methodology of testing IP Multimedia Subsystem
Karlík, Martin ; Novotný, Vít (oponent) ; Nagy, Ľuboš (vedoucí práce)
Karlík, Martin Department of Telecommunications, Faculty of Electrical Engineering and Communication, Brno University of Technology. Methodology for testing IP Multimedia Subsystem The aim of this work is the study, analysis and description of the IMS network architecture mainly IMS core layer and application layer, i.e roles and cooperation among elements of P-CSCF, S-CSCF, I-CSCF, BGCF, MGCF, HSS, SLF, application servers and end terminals. Analysis of presence services , setup of headers of SIP messages during makeing service provideing informations about accessibility of clients and iFC criteria.Furthet project is focused on the implementation of the IMS network based on the Open Source SIP Server Kamalio, Open Source IMS Core System FhoSS, creation tests scenarios for presence services and test-bed for IMS.
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Protocols Analysis of CISCO Networks
Karlík, Martin ; Kenyeres, Martin (oponent) ; Škorpil, Vladislav (vedoucí práce)
ABSTRACT Bc.Karlík, Martin Department of Telecommunications, Faculty of Electrical Engineering and Communication, Brno University of Technology. Analysis of CISCO networking protocols This semestral thesis is focused on CISCO networks and protocols like MPLS, BGP, Ipv4, Ipv6, Multicast – sprase / dense mode. The task was study of those protocols and design and implement lab excercise with one of those protocols by using free network simulator GNS3. In this excercise is used CISCO router 3745.
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Obchodní vztahy EU s Čínou
Karlík, Martin ; Štěrbová, Ludmila (vedoucí práce) ; Trojanová, Kamila (oponent)
V této bakalářské práci se zabývám analýzou vzájemných obchodních vztahů mezi Evropskou unií a Čínou a perspektivami pro jejich budoucí vývoj. V posledních letech prošel vývoj vzájemného obchodu určitými změnami, které by dokonce mohly být součástí nového trendu ve vzájemných vztazích. Dynamičtějšímu růstu obchodu však brání mnohé obchodní překážky, z nich pramenící spory byly dokonce opakovaně eskalovány až před WTO. Budoucí perspektivy se jeví více pozitivně pro evropské exportéry. Důvodem je rychlejší růst Číny, změna spotřebních vzorců a nárůst bohaté vrstvy Číňanů, která jasně preferuje zahraniční luxusní výrobky.
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