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Biomechanical Study of Hand
Krpalek, David ; Janíček, Přemysl (referee) ; Horyl, Petr (referee) ; Florian, Zdeněk (advisor)
This work deals with issue of human wrist and appropriate total wrist implant allowing a restoration of hand mobility approaching physiological condition after traumatic and degenerative diseases. Treating these diseases are very complex. These issues including a biological and medical issues. To determine the appropriate treatment method and select right total wrist implant is important to know the behavior the human wrist at all stages in terms of medical and biomechanical. For this reason, it was developed a biomechanical study including computation model of human wrist allowing solution of strain and stress of hand in physiological and pathological conditions and condition after total wrist implant. The frost remodeling of bone tissue was used for analysis of human wrist bone tissues and bone tissues after application of total wrist implant RE-MOTION™ Total Wrist.
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Internet attacks in term of end-user
Šírek, Martin ; Gála, Libor (advisor) ; Hlaváč, Jindřich (referee)
Personal computer connected to the Internet is a phenomenon of our time. Hand in hand with the positive development of the possibilities offered by the Internet is an effort to abuse them. Computer attacks are the crudest way of such abuse. This work explains the nature of cyber attacks and structure of the attacks. The aim is to explain how cyber attackers threat end-users of the computer and what defence exists against it. It's an introduction to the problem. The work is based around the assumption that the reader is a beginner in the field of information technology and the depth and scope of interpretation are adapted to it. For deeper study it refers to the sources in the rich list of used literature. The introductory section describes the structure of attacks and the interrelations between threats, assets (endangered goods) and vulnerability. Considerable space is devoted to the usage of social engineering for cyber attacks. Thereinafter methods,software and objectives of the attackers are explained. Measures against attacks are not missing too. The final section explains connections between the attacker's tools.
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The Use of Activities with Natural and Technological Materials for the Development of Children?s Creativity
Řeháčková, Radka ; Vodáková, Jitka (advisor) ; Jiroušková, Ivana (referee)
Má bakalářská práce je zaměřena na tvořivost a hlavně na možnosti rozvoje nonverbální tvořivosti u dětí mladšího školního věku. V teoretické části je definována tvořivost nebo-li kreativita, je hodnocen její vývoj, etapy, úrovně, kritéria a osobnost tvůrčích lidí. Od různých autorů jsou prezentovány návody výchovy k tvořivosti, její hodnocení a také bariéry tvůrčích činností. Protože cílovou skupinou dětí mé práce jsou děti z 1. a 3. tříd základní školy je zde také charakterizován tělesný, psychický a sociální vývoj dětí mladšího školního věku. V mé práci chci pomocí tří testů (Torranceho doplňování kruhů, tvarového skládaného testu s použitím tangramu a praktickou činností s technickým materiálem) zhodnotit a porovnat úroveň nonverbální tvořivosti dětí, které navštěvují "mé" oddělení školní družiny v letošním školním roce. Powered by TCPDF (www.tcpdf.org)
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Model Ecosystems in a School Garden and Their Use in the Teaching of Botany in the Lower Grades of Primary School
Jiříčková, Anna ; Skýbová, Jana (advisor) ; Pavlasová, Lenka (referee)
The idea of teaching pupils directly in the natural environment is not new at all. Similar ideas were already promoted by the famous Czech educator Jan Amos Komensky in the 17th century. But at his time, it was much easier to realize them. Nowadays, many city schools (and not only them) are situated far away from any kind of green. Then, it is quite demanding to reach a nice place where to spend a lesson of botany observing nature and learning to understand it. That is why using schoolgardens for purposes of learning in the natural environment seems to be quite reasonable - especially when the gardens are enriched by some models of ecosystems, that are typical for Czech landscape. Learning in such a type of garden is thought to have a very positive effect on pupils. It is believed to stop the process of children loosing contact with real nature and to help pupils develope a tight relation to it, which is very improtant for their environmental thinking. It is also absolutely sure, that active learning by manipulating real things and getting familiar with them by using all five senses makes the learning process efficient. Powered by TCPDF (www.tcpdf.org)
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The analysis of aberrations in the localization of the radiated fields during irradiation of the patients with rectum tumors by EPID method
HARTMANOVÁ, Magda
The presented thesis deals with the analysis of deviations in radiation fields during the irradiation of the patients with rectal tumors. The first part of the thesis is focused on the current problems connected with rectal and rectosigmoid cancer both in the Czech Republic and worldwide. It also includes the description of risk factors, characterisation of the given type oftumor, manifestation of the disease as well as the prognosis. What is also tackled is the prevention, which is important and often neglected.It was necessary to mention the possibilities of screening and dispensarisation programs. The next part deals with the diagnostic process (from anamnesis to specialised examinations) as well as the therapy. Chemotherapy and surgery are mentioned only marginally whereas radiotherapy, including its planning and methods, is dealt with in a more detailed way. The main part consists of the analysis of deviations in radiation fields. The deviations have been obtained by means of EPID (electron portal image device) in a sample of patients with rectal and rectosigmoid cancer who are treated with the use of radiotherapy at the oncological ward of the Hospital České Budějovice, Inc. The maximum, minimum and average deviation in the localization of radiation fields were assessed statistically, by means of the khi-quadrate test. The results obtained will be submitted to the oncological ward of the Hospital České Budějovice, Inc., where they can contribute to the assessment of radiotherapy quality. The thesis includes supplements such as portal images and tables with graphs indicating the development of the incidence and mortality for the chosen diagnosis within the entire population.
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Suburbanization in the Context of Periurban Villages
Ferenc, Kryštof
Subject of our interest will be villages in direct relation to a bigger cities. Over time influence of the city on villages grows. The result is loss of integrity of modern village life. Likewise, the quality of life and environment in new parts of the villages is incomparable with the one in existing parts of the villages. These problems are just as actual and poignant, as are natural. The present city parts of regional cities are the ultimate result of processes that operate in the suburban village today. Ultimately, we will try to find and identify the principles of planning a new development in suburbia so it benefits from the credibility of the place where it is located. And how to avoid negative influence of this massive new parts on village itself. To do this, we will serve the analysis of different transformations of rural parts in different time periods. From building interventions in the sixties, various concepts of housing estates built in the eighties, or construction of houses in the nineties. The criteria for evaluation of interventions will be the quality of life in terms of community and way of life.
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Natural houses in gardens
Formánková, Kristýna ; Kunt, Miroslav (advisor)
Thesis discusses natural houses which are supposed to be part of our lives in the future. These houses may be for someone and they might prefer smarter building with non-recyclable materials when choosing a new housing. But it is necessary to think about our future and sustainable development. We also need to tell ourselves what is really a priority for our planet. There comes a time when they will prefer building materials which can be used somehow after some time or be recycled. This is related to the design of the garden. It is designed to fulfil an ornamental, economic and social function. The garden is an integral part of each house, therefore it is important for each element used to be creating the garden as a linked harmonious whole. The study deals with the concept of a natural houses home in accordance with the maximum use of the garden.
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Arctic tundra dendrochronology
Lehejček, Jiří ; Svoboda, Miroslav (advisor) ; Monika, Monika (referee)
Historically unprecedented environmental change in the Arctic ecosystems is often given into the context of its past and possible future development. In the region where instrumental meteorological observations are scarce archives need to be investigated in order to address this issues. The comprehensive synthesis one of the archives: long-live circumpolar evergreen Juniperus communis L. shrub is presented here. 20 individuals from southwest Greenland were investigated at the cell anatomy level to understand the ecology of the species and unhide its potential for environmental and climate reconstructions. The findings are as follows:
i) Stop of exponential cross-sectional conduit-lumen widening with increasing age is in contrast with conduit-lumen nature of trees. This indicates that shrubs do not need to saturate their water and nutrient demands via traits of classical hydraulic conductivity law but rather developed different mechanisms. Extreme weather conditions result in prostrate growth form. However, different weather factors probably influence shrub growth differently: While snow and wind act mechanically (a), temperature influences the form of growth physiologically (b). a) So long as the young shrub stem has high resilience to bend back to an upright position after snow melt and so long as it can withstand the wind during the vegetation season it most likely grows upright and the conduit-lumens widen. b) Temperature, resp. freeze-thaw events are responsible for the shrubs preference of safety (finite size of conduit-lumens) over hydraulic efficiency, thus not allowing for more primary growth. All of these (and other) factors are apparently working together and the transition of vertical to more horizontal growth is gradual. As a consequence, the conduit-lumen sizes may not have to be further increased (due to ecophysiological restrictions possibly also must not) because water is no longer transported against gravity.
ii) Observed age/growth trend has to be taken into consideration for further employment of the wood anatomical parameter in paleoenvironmental studies. That is, shrub cell parameters can only be used for this purposes if correctly detrended. This allows for more accurate as well as longer reconstructions because youth trend was often neglected in reconstructions based on shrub annual-rings.
iii) The south-western Greenland Ice-Sheet (GrIS) melt rates reconstruction is presented for the whole 20th century. This part of GrIS is considered as the most active. According to the presented reconstruction current GrIS melt rates are not uncommon for the last century being comparable to first decades of 20th century. This finding is particularly important contribution to the debate on Atlantic meridional overturning circulation (AMOC). Too high fresh water inputs into the Northern Atlantic from GrIS melting may slow down or even stop the AMOC which would result in more continental climate in Europe. Presented results indicate that this threshold lies higher than observed current melt rates of GrIS.
Fascinating Juniperus comunnis species has shown to be able to address many ecological as well as environmental open questions and due to its longevity and abundant distribution has a great potential to become an important player in the Arctic research.
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Gas trade
Andrsová, Nicola ; Čajka, Radek (advisor) ; Bolotov, Ilya (referee)
The bachelor work deals with the natural gas as a commodity, transport and storage potions, world gas market and its development since 80s of the last century. It also extends the possibility of using gas in the future for a variety of purposes. The main theme is the Czech Republic's position in the global gas business, especially in terms of relations with the European Union, Ukraine, and Russia. The analysis in this part is based on data on gas reserves in the world, the volume of production and consumption of gas and gas flows throughout Europe from the major exporters, especially the gas flows from Russia via Ukraine. For the Czech Republic, it focuses on the possibilities of enhancing energy self-sufficiency, especially the construction of the gas tank in a premises of Rožná gas storage and Mozart pipeline, which would mean the Czech and Austrian gas system hook-up. Consideration must also be given the ongoing Russian-Ukrainian gas crisis and its impact on gas supplies to Europe and/or the Czech Republic. The aim of this work is to outline the development of gas trade, the possibility of its further use, otuline the basic principles of the European legislation and the options for enhancing energy self-sufficiency of the Czech Republic and also to evaluate the Russian-Ukrainian gas crisis.
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