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Anomální difuze plazmatu z okrajové turbulentní oblasti tokamaku / Anomalous diffusion of plasma in tokamak edge regionSeidl, Jakub January 2013 (has links)
Title: Anomalous diffusion of plasma in tokamak edge region Author: Jakub Seidl Tutoring institution: Institute of Plasma Physics AS CR, v.v.i. Supervisor: Doc. Ing. Ladislav Krlín, DrSc., IPP AS CR Consultant: RNDr. Radomír Pánek, Ph.D., IPP AS CR Abstract: This work provides brief introduction to the topic of plasma turbu- lence in tokamak edge region and several aspects of anomalous plasma diffusion are discussed. We use numerical code ESEL to model interchange turbulence and investigate properties of turbulent structures in different regimes of parallel trans- port. Means of experimental verification of the results are discussed. Results of the modelling are then used to interpret unexpected results experimentally obtained by electrostatic ball-pen probes on tokamak ASDEX Upgrade, mainly appearance of a 'bump' in power spectra of measured plasma potential. Next, we explain be- haviour of cross-correlation function of density signals measured by two spatially separated Langmuir probes in the vicinity of magnetic separatrix and we point out an ambiguity in interpretation of results of vorticity measurement made by set of floating Langmuir probes. In the last part, transport of plasma impurities by electrostatic turbulent potential is modelled. We identify reversal of radial particle velocity for particles with...
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Nejčastější problémy v oblasti pletence ramenního u basketbalistek a možnosti fyzioterapeutického ovlivnění / The most often problems in shoulder girdle of women basketball players and options of physiotherapeutic affectKomárková, Zuzana January 2015 (has links)
Title The most often problems in shoulder girdle of women basketball players and options of physiotherapeutic affect. Objectives The main goal of the thesis is in theoretical part to summarize potentional problems in shoulder girdle of basketball players, options and solutions of these problems. There is complex examination of shoulder girdle of dominant upper limb of women basketball players in an experimental part and figure out where is the main problem in this part. Methods There are two parts of the thesis, the first one is the theoretical background for second experimental part where complex functional physiotherapeutic examination of shoulder girdle with using of aspection, palpation and special tests for shoulder girdle were made. The most often problems in shoulder girdle of women basketball player has been determined by using the results of testing process. Results Testing of shoulder girdle of women basketball players showed how often blockage of ribs is. Blockage of fifth rib was present in 90% of the probands, frequent was also decentred position of shoulder and shoulder blade, hypertone of upper fixators of shoulder blade and pectoral muscles. Most of probands had restriction of passive motion to segment in thoracic spine and hypermobility of shoulder. Often was present weakness of...
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Bifurkace v matematických modelech v biologii / Bifurcation in mathematical models in biologyKozák, Michal January 2013 (has links)
Stationary, spatially inhomogenous solutions of reaction-diffusion systems are studied in this thesis. These systems appears in biological models based on a Tu- ring's idea of a diffusion driven instability. In the connection, a global behaviour of bifurcation branches of these stationary solutions is analyzed. The thesis in- sists on theory of differential equations and on (particularly topological) methods of nonlinear analysis. The existence, as well as non-compatness in one-dimensional space, of a bifurcation branch of general reaction-diffusion system leading to Tu- ring's efekt is proved. Further, a priori estimates of Thomas model are derived. The results tend to theorem, that forall diffusion coefficient from the preestab- lished set there exists at least one stacionary, spacially nontrivial solution of Tho- mas model.
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Zajišťování personální stability v domovech pro seniory na Benešovsku / Ensuring personal stability in homes for the elderly in Benesov regionSkalický, Jakub January 2021 (has links)
The diploma thesis deals with the topic of ensuring personal stability in selected homes for the elderly, with special focus on the position of a social worker and a worker in social services. The aim of the work is to describe the process of human resources management and its tools aimed at ensuring personnel stability from the perspective of the organization's management. Related to this is the intention to map the causes of fluctuations, the obstacles of ensuring stability and the attitude of the founder to the issue. The work focuses on selected facilities established by the public and private entities. The theoretical part of the thesis deals with a comprehensive description of the home for the elderly service, including its staffing, i.e. mainly social workers and workers in social services, to make it clear how important it is to provide the service sufficiently with them. Furthermore, this part deals with management in the social field, the role of the manager and the human resources management falling within his competencies. Last but not least, the theoretical part deals with employee turnover and retention. The empirical part of the work presents the results that were obtained on the basis of qualitative research. The research was carried out with the help of semi-structured interviews...
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Membránová stěna kotle s pokročilým řízením průtoku / The membrane wall of the boiler with an advanced flow controlČešla, Martin January 2016 (has links)
The master thesis deals with hydraulic characteristics of once-through boilers and describes the problems which may arise during the flow of water through the evaporator. Especially the formation of aperiodic instability of the evaporator and hydraulic uniformity amongst every steam generating tube. The thesis describes parameters, which cause these problems, and solutions how to deal with them. The calculation has been done for evaporator of the boiler called K2 located in power station in Chvaletice.
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Vibronové stavy v cérových krystalických sloučeninách / Vibron states in cerium crystalline compoundsDoležal, Petr January 2021 (has links)
This thesis is focused on study of the vibron state in Ce intermetallics. The presence of a vibron state is a consequence of an enhanced magneto-elastic interaction, between phonons and 4f electrons of the Ce ion. The magneto-elastic interaction is usually weak and can be neglected, but here in CeAl2, CePd2Al2, CeCuAl3 and CeAuAl3 is considered to be strong enough, which leads to a bound state called the vibron state. A well determined crystal structure of these compounds is a necessary prerequisite to discuss this unique behaviour. Therefore our investigation is performed on the following levels: A crystal structure study of (Ce,La)Pd2Al2-xGax and CePt2Al2, by low temperature and high temperature X-ray powder diffraction; Investigation of bulk and transport properties of a CePt2Al2 single crystal using the specific heat, magnetisation and electrical resistivity measurements; Symmetry analysis of phonon modes and angular momentum operators in the model Hamiltonian, based on group theory; And finally the study of phonon dispersion curves in CePd2Al2 and LaPd2Al2 single crystals using inelastic X-ray scattering. All these results and preformed analyses lead to the following conclusions: The CePd2Al2 and LaPd2Al2 are incongruently melting phases. We found and described the way which has allowed us to...
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Řešení vývoje nestabilit kapalného filmu s následným odtržením kapek / Modeling of Liquid Film Instabilities with Subsequent Entrainment of DropletsKnotek, Stanislav January 2013 (has links)
This dissertation deals with instabilities of thin liquid films up to entrainment of drops. Four types of instabilities have been classified depending on the type of structure and process on the liquid film surface: two-dimensional slow waves, two-dimensional fast waves, three-dimensional waves, solitary waves and entrainment of drops from the film surface. This thesis analyzes the physical principles of instabilities and deals with the mathematical formulation of the problem. Shear and pressure forces acting on the surface of the liquid film are identified as the cause of instabilities. Mathematical models for predicting instabilities are demonstrated using approaches based on solving the Orr-Sommerfeld equation and the equations of motion in integral form. Models of shear and pressure forces acting on the surface of the film and selected models of film thickness are presented. The work is focused on the prediction of the initiation of two-dimensional waves using the integral approach. Shear stress and pressure forces acting on the liquid film surface have been modeled using the simulation of air flow over a solid surface. Finally, criteria for drop entrainment are presented with their dependence on air velocity and film thickness.
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Vliv ploché nohy na stabilitu hlezna u hráčů florbalu / The effect of flat feet on the stability of the ankle joint of floorball playersHanušová, Barbora January 2016 (has links)
Title: The effect of flat feet on the stability of the ankle joint of floorball players. Objectives: The main aim of this thesis is to determine whether a flat feet has any effects on the floorball players' ankle joint stability. Furthermore, the thesis focuses on the chronic ankle instability, other leg pathologies and on the options of therapeutic interventions. Eventually, the thesis provides summary and output data for physiotherapist, sport couches and the examined players. Methods: First a literature study was conducted to establish a theoretical framework. Based on the feature/aspect examination of longitudinal foot arching and an initial questionnaire 10 particular subjects aged 22 to 29 were selected, all of them form the TJ Tatran Střešovice team. The subjects were divided in 2 groups - with longitudinal flat feet and without longitudinal flat feet pathology. The examined subjects were scored with negative points according to occurrence of any pathologies. Both groups were also benchmarked in the Star Excursion Balance Test that determined feet dynamic stability index. Results: The examination proved that flat feet affects the stability of the ankle joint as the subjects of the group without longitudinal flat feet scored results that were 31% better than results of the subjects with...
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Ankle sprain - conservative versus operational treatment: A literary review / Ankle sprain - conservative versus operational treatment: A literary reviewMillas, Dimitrios January 2017 (has links)
1 Abstract Title Ankle sprain, conservative versus operational treatment: A literature review Aim The main purpose of this thesis is to assess and review the efficacy of main types of conservative and surgical interventions applied on ankle sprain injuries, as also the factors that influence the clinical outcomes in patients undergoing the selected treatment procedures. Method This thesis is a literary research, reviewing articles from relevant journals and books. Information and data sources were retrieved from English, released between 1980 and 2016, using electronic databases and reference lists of articles. The following databases were searched for the highest possible amount of relevant articles, with an attempt to reduce publication and/or selection bias: PubMed, EMBASE, CINAHL, The Cochrane Library (Cochrane Database of Systematic Reviews), Web of science and Medline. Preliminary searches began at the inception of the project, and the full search was concluded in October 10th , 2016. A restriction for the type of publication (meta-analysis, systematic review, clinical trials, comparative trials, practice guidelines and case studies) was applied when allowed by the databases research tools. Results The analysis of the reviewed studies resulted that conservative treatment approaches is the main...
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Povrchová elektromyografie svalů nohy a bérce při různých posturálních situacích u pacientů s chronickou nestabilitou hlezna / Superficial electromyography of muscles of legs and shins in various postural situations in patients with chronic talar instabilityKosobudová, Blanka January 2007 (has links)
The first aim of this master thesis was to summarize the information on injuries of ligamentous apparatus of an ankle, lateral instability of a talar joint, conservative and operative therapy of these injuries with the emphasis on physiotherapeutical procedures in the therapy of ankle sprains. The second aim of the master thesis was to introduce surface electromyography as a possibility to examine objectively the differences in the activation of foot and shank muscles with healthy people and people with chronic instability of an ankle in different postural situations. The third aim was to use the theoretical knowledge in practice with patients who have sprained their ankle and to make a subjective and objective assessment of the therapy effect which is in progress. Powered by TCPDF (www.tcpdf.org)
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