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Morphology of the terrestrial magnetosphere
Paloncý, Pavel ; Šafránková, Jana (advisor) ; Santolík, Ondřej (referee)
In the present work, we study one of the outer boundary of the Earth's magnetosphere, the magnetopause, it's shape and location. The magnetopause is a region, where balance of pressures takes place, in particular the dynamic pressure of the solar wind and the Earth's magnetic field pressure. Our study is based on experimental data from Themis spacecraft magnetopause crossings and we create a database of these crossings. We use data from the subsolar region and from the region close to terminator (xGSE = 0). We further supply these data with parameters of the solar wind from solar wind monitors. Magnetopause locations identified by the spacecraft are then compared with existing magnetopause models and we are searching for the causes of deviations between model and real locations. The most suitable solar wind monitor and the magnetopause model are chosen based upon these comparisons, and possible relations to other parameters not included in the models are then discussed. In the last part, we discuss possibility, advantages, and disadvantages of using any of Themis spacecraft as a near-Earth solar wind monitor.
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Influence of the frame size on splitting ratio in the passive optical networks XG-PON
Kočí, Lukáš ; Horváth, Tomáš (referee) ; Münster, Petr (advisor)
The diploma thesis deals with the theoretical definition of passive optical networks, furthermore the description of methods of channel bundling in passive optical networks and the coexistence and migration between standards. The main essence of this work is the XG-PON (10-Gigabit-capable Passive Optical Network) standard. This standard is generally defined along with a description of the physical layer. The transport layer is detailed analysis. There is a description of conditions, under which the Optical Network Unit pass through, when is activated. Additionally, this diploma thesis focuses on the processes of connecting Optical Network Units to the Passive Optical Networks and the timing relationships between Optical Network Units and Optical Line Terminal. The simulations demonstrate that as the number of simultaneous connections to Optical Network Unit increase, longer wait time for each additional connection becomes. This also solves the collision conditions, that might arise in communication and the equalization delay. Finally, the diploma thesis deals with the influence of a refractive index on timing relationships.
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The milk quota abolition and its impact for milk producers
ŠVECOVÁ, Renata
The thesis was focused on the evaluation of the systém of the milk quotas. This mode of regulation of the milk market should be completed in 2015. The aim of the thesis was to assess the pros and cons of regulation, including the potential impact of the termination of this systém for milk producers in the Czech Republic. In the first part has been processed the information about the milk quota system, its development and possible future condition. The second part of the thesis was focused on the assessment of the information obtained from a questionnaire survey from milk producers.
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Architecture and sightless
Luciaková, Katarína ; Petelen, Ivan (referee) ; Žalmanová, Petra (referee) ; Ing.Petr Karásek (referee) ; Šindlar, Jiljí (advisor)
This thesis explores the relationship between architecture and the blind people. For better clarity and understanding of the topic, The work has been divided into five distinctive parts. In the first, introduction part, I approach space sensation of a blind person from the physiological and psychological angle. This analysis is very important for the understanding of imagination, which the blind person has. Another important fact to understand is the way in which the blind person gets the information about the space and what is his ability to process it. Further, I explain the basic principles of the blind person’s movement through space and describe instructions of how to help blind people in the concrete spatial situations. In the next part, I give a short information about the historical progress of the relation between the society and the blind people. An important fact is that, as late as 200 years ago, the blind people were considered as “sub men” and did not have the full freedom privilege. This relation has been modified over time and nowadays, the blind people have the freedom of movement and all the rights to enjoy their lives. To meet the needs of the blind people, many associations have been created that act on their behalf. The associations have different modes of functioning, but their common goal is to help blind people with their social rehabilitation, looking for employment and removing architectural barriers. The core of my work is divided into two parts. In the first one, I focus on the problematic of the blind people and architecture from the functional aspect. The functional aspect is vital for the blind people. It corresponds to their safety in the environment. In this chapter, I treat in detail basic elements for designing buildings, for specifying barriers and principles of design for blind people. Furthermore, I describe the help tools the blind people need in order to move in the space. I evaluate the future of these tools and indicate the rapid technological progression which makes the life of blind people more comfortable. In the next part, I focus on the problematic of the blind people and architecture from the aesthetic aspect. This question has not been much explored yet, but is, nonetheless, very important. In this part of my work, I use more my personal experience and the knowledge coming from the exploration of space. Aesthetical values are subjective for all the people, with or without a handicap. Therefore, in this final chapter, I try to note the facts that can be used in the process of the aesthetical perception and to reflect on them. In the domain of aesthetical research, there also exist tools and institutions that help blind people in their comprehension of architecture. The division of my work emerged from the compilation of diverse facts in the process of writing. This thesis has an informative and practical character. It is intended for people who want to understand and to be informed about how to design architecture for the blind people. It will be directed towards people who build this kind of architecture and need an overview of how to make it. It is also intended for people interested in learning more about architecture.
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Development of Structure of Vacancies in Relation to Economic Growth
TALÍŘOVÁ, Lucie
This thesis deals with development of structure of vacancies in relation to economic growth. Objective of the thesis was to assess the development of vacancies in terms of economic growth in the selected region. The thesis was divided into theoretical and practical part. Terms regarding the given issues were clarified in the theoretical part. This part also deals with offer, demand and balance on the labor market, unemployment, employment policy, economic growth ? it´s measurement and patterns. The region České Budějovice, which will be further discussed in the thesis, is characterized in the first chapter of the practical part. The thesis answers the question, what the unemployment rate, number of job applicants or number of vacancies in the region is. It also deals with the structure of vacancies according to education, profession or length of vacancy and on the other hand it deals with the structure of job applicants according to sex, age, profession or length of unemployment. The effect of economic growth on the structure of jobs is assessed in the next chapter. There´s a certain mismatch between the structure of vacancies and the structure of the unemployed. Main problems of this mismatch are defined in the final chapter of the practical part. There are an overall summary of the results and recommendations for the future in the conclusion of the thesis.
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Nursing care about patient in terminal stage at the ward follow-up and in Hospic.
PETROVICOVÁ, Eva
The bachelor thesis called "Nursing care of the patient in the terminal stage at the aftercare department and at a hospice" deals with the issue of nursing care for patients in the terminal stage at the aftercare department (AD) and at the hospice. Caring of a dying person is still a current topic, since each one will die and before the inevitable moment occurs, we will wish that it happens with dignity. The aim of the work was to examine the differences in nursing care and meeting the needs of patients in the terminal stage at the AD and in a hospice. To prepare the thesis, a qualitative research with the help of unstructured interviews with general nurses and patients in the terminal stage, who only complemented for less strain information from nurses. The talks took place in Strakonice Hospital and The Hospice of St. John Neumann of Nepomuk in Prachatice. Research file was made up of three general sisters and three patients from the aftercare department and three general sisters and three patients from the hospice. Patients with whom the interviews were conducted at the aftercare department were familiar with their own diagnosis, so the interview could be more open. Patients at the hospice were acquainted with their own diagnosis as well. Afterwards, the records have been processed into categories according to the research questions. The results show that among these facilities there are a lot of differences in the provision of nursing care and meeting the needs of patients in the terminal stage. The first research question related to the differences in nursing care of patients in the terminal stage. This area showed the differences in the current day mode, especially in times of waking of the patients, hygiene and breakfast. In addition, a difference in the area of food and fluid intake appeared. The second question dealt with ways how to control pain at the patients in the terminal stage. At the hospice, prevention from pain is at first place. Either with the help of analgesics, opiates or dispensers. From the conversations with nurses and patients from the AD there is an apparent lack of control of pain. The third question touched the issue of communication of nurses with patients in the terminal stage. From conversations with patients (AD and hospice) the feeling of a lack of communication arises. Nurses stop at the patients and talk, but some of the patients would welcome more opportunities to have a conversation. At the hospice, the presence of the nurse attendants or nuns is of benefit to patients. The fourth question related to the psycho-social needs. These needs, including the spiritual one, are fully provided at the hospice. The patients mentioned the students help, mass celebration or volunteers who fill a day. This fact is presented in contrast to the AD, in which patients can fill a day only with the visits that are allowed continually at both facilities. Spiritual care is adequately provided there as well. The fifth question dealt with communications of staff with relatives of the patients. At both institutions this occurs frequently. The nurses involved the family in the care of the patient and talks about the family as important. They highlight the need to know the patient's background and home. The final question discussed how they farewell the deceased. At the AD it occurs in a hospital room, whereas at the hospice with more dignity in a farewell room, which is decorated. The deceased is dressed in festive clothes that nurses request from the family before the death. The bereaved are also supported afterwards by the hospice staff through meetings or by sending cards. This bachelor thesis could serve as a learning resource for students with the major of General Nurse, but also for the general public or as a guide to those who care of their relatives in the future. I believe that knowledge of the bio-psycho-social and spiritual needs is an essential part of the comprehensive care about the dying.
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Utilization of CDTA and CFTA elements in electrical circuits and frequency filters
Kotlán, Petr ; Herencsár, Norbert (referee) ; Kubánek, David (advisor)
Thesis deals about active component in current mode, CDTA (current differencing transconductance amplifier) and CFTA (current follower transconductance amplifier). CDTA compares two input currents. Outcome current comes trough added terminal Z to load. Caused voltage is transfered to output current by transconductance g. Output surrents shall be possitive (terminal X+) or negative (terminal X-). In contrast to CDTA, CFTA has one current input. Components were used in filters and oscillators. Some filters of second order realized simultaneously low, hight and nad pass were designed. Then, the transfer of filters with diverse topology with opperational amplifier to filter with CDTA and CFTA was shown. Some oscillators were designed. Designed circuits were simulated. Transistor models of CDTA and CFTA were created to purpose of simulation. This components can be realized by AD844 and MAX435. There are shown the conclusions of AC analysis of filters and transission analysis of oscillators. The thesis contains practical realization of second order frequency filter also. Device was made like a PCB by smd. CFTA was realized by components AD844 and MAX435.
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Financial analysis Crystalex, a.s.
Matušková, Petra ; Synek, Miloslav (advisor) ; Lejsková, Linda (referee)
The Financial analysis Crystalex a.s. examines a general financial situation of the company. I use classical methods for financial analysis. The significant part of my project is the application of creditworthy and bankruptcy models. The aim of my thesis is to find out if these models were able to predict the current situation for management in the past.
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Simulation of toroid coils in Ansoft Maxwell 3D
Daněk, Michal ; Pfeifer, Václav (referee) ; Hanák, Pavel (advisor)
The master thesis is focused on the simulation of the toroid coils in Ansoft Maxwell 3D software, which uses finite element method for electromagnetic field simulation. Firstly the process creation of the geometric model toroid coil with seventy-five threaded is presented. It is necessary to debug this model and prepare it for the mesh generation. Physical properties are assign to this model and it gives rise to the physical model. We will set boundaries, excitation current, core material, winding material and the parameters for the mesh generations. New material Kashke K4000 will be created in the materials library and subsequently we will define its BH curve on the basis of datasheet. Analysis is made in two modes. Direct currents (7,5A; 10A; 15A; 20A; 25A) and (non)linear materials are used in magnetostatic solution. Toroid coil is excited by current pulse in transient solution. In Ansoft Maxwell Circuit editor a source which generates current pulse will be created. This excitation will be assigned to the toroid coil as an extern source through a terminal. Core material is linear in the case of transient analysis, because Ansoft Maxwell 3D doesn´t allow to use nonlinear material in this solution. Settings are different in transient and in magnetostatic analysis. End time and time step are entered to solve this task in transient analysis. Time points are entered too. Flux density and electromagnetic field strength are calculated in these time points and later it will be possible to view the results. Calculated fields are shown as the pictures in this thesis. The procedure how to use a field calculator in the postprocessing is given as well. The achievements are summarized in the conclusion.
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Models of EMC filters
Kejík, Zdeněk ; Šebesta, Jiří (referee) ; Dřínovský, Jiří (advisor)
Basic problems of the EMI mains filter is explained in the introduction of this thesis. These problems appear during the measurement of insertion loss of filters and by design of EMI mains filter. The important problem is uncertainly of the terminating impedances. Eventualities measurement insertion loss of EMI mains filter and motivation of creation filter models are shown. The following part of this project shows the electronic components, from which are realized the EMI mains filter. Parasitic properties of these real devices are also discussed. The circuitry of EMI mains filter is described by the Modified Nodal Voltage Method. The optimization method called Participle Swarm Optimization is introduced, too. Basic principle and terminology are mentioned. The third part of this project is focused on the own filter and spurious components. Influence of own filter and spurious filters components on insertion loss curve are showed. Magnetic factor coefficient k is searched by the optimization method PSO. The last part of this thesis deals with creation of the alternative circuits with spurious filters components. The performances of the alternative circuits were compared with the measured data for symmetrical and asymmetrical measurement setup. The breakages in the insertion loss curve were used for determining the spurious components.
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