This diploma thesis will discuss possibilities of using inorganic fibers to improve the mechanical properties of the resulting physical body bricks. Assessment of the effect of fiber length, fiber thickness is in the order of micrometers. In this work we were used fibers which are commercially produced for the purpose of reinforcement, but also waste fibers, which mainly serves as an insulator.

The aim of the diploma thesis is theoretical analysis of optical fiber sensory sensing using coherent and incoherent interferometry, creation of simulation models of interferometers and their practical measurement. The first part deals with the description of basic physical principles and interferometers. In the second part the thesis deals with the description and design of optical microphones, which are based on the principles of physical interferometers Michelson and Mach - Zehneder interferometer. Both models are simulated in the VPIphotonics simulation environment. In the third part of the thesis, both models are assembled and measured. The last part of the thesis presents the differences between the interferometers and the results of the measurements.

1 ABSTRACT The prevalence of overweight and obesity is constantly growing all over the world. Not only adults, but also children and adolescents are affected by this increase. The development of overweight or obesity in childhood represents a rather significant health risk that extends to adulthood. Both being overweight and being obese causes various secondary diseases, e.g. type II. diabetes or cardiovascular diseases. That is why the attempts to stop the increase of prevalence of overweight and obesity emerged in recent years. The attempts to stop these tendencies are aimed especially at children and adolescents, who carry the habits developed in childhood even to their adult life. In order for these attempts to be successful, one needs to have at their disposal information about the contemporary status and factors, which influence the development of overweight and obesity. The primary prevention ought to be concentrating on these factors. The survey, which was created in the questionnaire form, was conducted in primary schools and on the lower grade of grammar schools in Prague and its surroundings. 1897 questionnaires were distributed throughout the whole year; 366 were given back and out of these 225 questionnaires belong to girls and 141 to boys. This thesis focuses on the issues of the diatery,...

Differences in the composition of cell membranes are considered to be the physiological mechanism responsible for different metabolic rates, life span and consequently, different life-histories. The membrane pacemaker theory suggests that higher membrane unsaturation may be an important factor responsible for higher metabolic rate and shorter life span of organisms. The alternative hypothesis, on the other hand, assumes that membranes can function as structural antioxidants, and thus that higher membrane unsaturation may be associated with longer life span. The aim of this work was to test how changes in the fatty acid composition of membranes depends on body size, latitude and altitude, within which different life-histories and metabolic rate were observed. Temperate and tropical lowland songbird species were chosen for the models testing the effect of latitude, and only tropical species of songbirds were chosen for the models testing the effect of altitude. Part of the work was molecular sex determination. Using gas chromatography and mass spectrometry, the amount of individual fatty acids contained in red blood cell phospholipids was obtained from blood samples. The results showed that the composition of the membranes in most cases correlates with body size, which also correlates with almost all...

This thesis follows up a cognitive psychological phenomenon, called boundary extension. This effect describes a situation, when we remember parts of a scene during scene perception, which could be located outside of the frame, but we actually did not see it. The literary review part offers up summary of fundamental findings of approximately thirty years of research of this phenomenon. The research part submits an experiment examining a boundary extension in panoramic photographs with respect to an effect of multiple factors, a sequence length (nine and thirteen frames), a type of sequence (indoor and outdoor), a target picture size (normal, close-up, wide-angle). This experiment is the first larger study of boundary extension in Czech population and the examined effect of factors was not experimentally verified in previous studies. Keywords Boundary extension, panoramic photographs, sequence length, type of sequence, target picture size

This thesis deals with deterioration observed in cement-concrete cover (CBK) for three selected road sections of highways in the Czech Republic. The main objective was to determine whether concrete failure arose due to alkali-silica reaction, or other mechanism. The deterioration of concrete failure was observed in the macroscopic and microscopic scale. The mostly macroscopically observed deterioration of the concrete were cracks breaking the surface and inner parts of concrete. In micro- scale the microcracks and alcali-silica gels were observed. The CBK deterioration was quantitatively determined by three main parameters: specific length of microcracks on the CBK surface, specific length of microcracks in the drill cores and volume of alcali-silica gels and microcracks in thin sections. According to these indicators it was possible to distinguish two different types of CBK deteriorations. (1) Degradation mainly associated by alkali-silica reaction (observed on highways D11 - Vrbová Lhota and D1) and (2) degradation connected with another mechanism (cycles of freezing and thawing, mechanical degradation) was observed on the highway D5.

1 University education of foreigners in the Czech Republic Abstract The thesis examines evolution, trends and structures of foreigners in tertiary education sector in the Czech Republic and at the same time aims at finding common aspects or differences between students with Czech citizenship and without it. In the theoretical part of examining university education for foreigners the concept of third demographic transition has been applied. The Associated Student Register Information (SIMS) has been used as the main data source. In this thesis, the analysis is based on individual anonymized data of graduates in the period between 2001 and 2017. The analysis focuses on net duration of study with such independent variables as gender, age, study field, form of study, type of university and citizenship. The analytical part also examines the relationship between gender and its possible dependence on citizenship, study field and on the net duration of study. One of the conclusions of this work is that the number of Czech students has been progressively decreasing in the last few years, while the number of foreign students in the Czech Republic is growing. Still, the net duration of study is shorter for Czech graduates than for foreigners, with an exception of Slovak students with a shorter net duration of study...

The diploma thesis generally focuses on pension systems, specifically on the institution of retirement age. This institution is very important for the old-age pension system and its stability. Retirement age is an important determinant of every pension system. Demographic and economic state of society depends, among other things, on age at which citizens can retire, it's associated with standard of living of state residents. It also affects job opportunities. Since its inception the retirement age in the Czech Republic has gone through many modifications. Based on the theory of actor-centered institutionalism, the diploma thesis addresses the determinants that influenced the development of retirement age institute, including its institutional framework and actors involved in its changes. It also deals with its developmental stages. Comparison with the development in Slovakia (in some parts of diploma thesis only) will be enriched the conceptual, empirical as well as methodological realm of the thesis. Czech and Slovak Republics have shared history but the pension systems of both countries have considerably diverged. In conclusion the diploma thesis specifies the wider context of the retirement age as a part of the overall pension system. Powered by TCPDF (www.tcpdf.org)

The main subject of this diploma thesis is to make a proposal to improve the optical access network for the transmission of Triple play services. I would here to the reader clarify method of proposal of optical network. There are described the kinds of optical access networks with parameters, for which we must look by their construction. There are described the modern methods of construction optical network too. In the theoretical part are discussed used architecture of networks too. I met here known standards, which I compared for big importance by their choice. A reason of construction of optical network are services known like Triple play. These services together with their problems and parameters are here discussed too. At the end of theoretical part I listed here measuring method for getting negative attribute distorting the led signal. In practical part the locality witch use the optical signal as the source of information is ordered. These network use unfit connections and has less possibilities than usual and this is the reason, why is the network not able to supply Triple play in requested quality. At first the analysis of ordered network was needed. Situation was complicated by the fact, that it has been prohibited entrance to me. The structure of network and network parts was known and documented by me. I made the proposals to improve this network in practical part. By the first proposal remained original kind of access network FTTB, but used new parts with higher performance. By the second proposal I made the network FTTH, by which it was possible to use the last haul optical cables with treatment and using new elements. It was needed to create solution by flat units. The resulting proposals are here evaluated, compared and cost evaluated. For rejection of access to optical network I did not make measuring, so I made simulation for variant FTTH for getting some parameters negative acting transmission.

Tato disertační práce se zabývá vylepšením systémů pro rozpoznávání činností člověka. Současný stav vědění v této oblasti jest prezentován. Toto zahrnuje způsoby získávání digitálních obrazů a videí společně se způsoby reprezentace těchto entit za použití počítače. Dále jest prezentováno jak jsou použity extraktory příznakových vektorů a extraktory pros- torově-časových příznakových vektorů a způsoby přípravy těchto dat pro další zpracování. Příkladem následného zpracování jsou klasifikační metody. Pro zpracování se obecně obvykle používají části videa s proměnlivou délkou. Hlavní přínos této práce je vyřčená hypotéza o optimální délce analýzy video sekvence, kdy kvalita řešení je porovnatelná s řešením bez restrikce délky videosekvence. Algoritmus pro ověření této hypotézy jest navržen, implementován a otestován. Hypotéza byla experimentálně ověřena za použití tohoto algoritmu. Při hledání optimální délky bylo též dosaženo jistého zlepšení kvality klasifikace. Experimenty, výsledky a budoucí využití této práce jsou taktéž prezentovány.