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Simulation and experimental investigation of the oscillator with soft impacts
Peterka, František ; Kocanda, Lubomír ; Veselý, Jan
The dynamics of oscillators with rigid impacts, based on the Newton elementary theory of impacts, which neglects a time duration of the impact and the velocity of motion is described by coefficient of restitution, is known. New interest of the investigation is directed on the systems with soft impacts, when a time interval of the impact is not zero and it is necessary to choose a proper model of elastic and damping forces appeared during the soft impact [4]. Such approach can explain the behaviour of the oscillator, when it transits from the linear - impactless - motion into motion with rigid impacts.
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The incidence of suicidal behavior among drug addicts.
SKOŘEPOVÁ, Lucie
This diploma thesis on the theme: The incidence of suicidal behaviour among drug addicts in the theoretical part deals with the development of the drug scene in the Czech Republic, the EU drugs policy in the Czech Republic, selected studies dealing with drug use, health and social consequences of drug use. Also deals with suicide behaviour, its forms, types, methods and causes of suicidal behaviour, motivation, development of data collection and the treatment of suicidal behaviour. The aim of this work was to find out the most common reasons and ways of suicidal behaviour in addicts individuals in the psychiatric hospital of the Cerveny Dvur (hereinafter referred to as PH CD ). Another objective was to determine whether the clients have undergone a treatment PH CD after the suicide attempt. On the basis of the objectives have been created three research questions. Due to the nature of the investigated problem was as a research method chosen semi- structured interview with clients. Before the research was carried out in PH CD questionnaire survey on suicidal behavior for a team project GA JU No. 103/2013/S "The effect of systematic psychotherapy tailored to the incidence of intentional self-injurious behaviour".. Based on the data from the questionnaire investigation were clients selected for this diploma thesis. Interviews were conducted with eight clients of PH CD.
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Collaboration nurse and family members of patiens with brain injury
LIŠKOVÁ, Sandra
The bachelor thesis deals with the cooperation of nurses and family members of patients with brain injuries. Brain damage is among the most serious injuries a person can have. Brain injuries are the second highest cause of death after abdominal trauma. People often confuse the term head injury with brain injuries. The lasting consequences of these injuries are very severe and often fatal. The skin on the scalp can indeed bleed, but we can only talk about brain injury if there is any actual damage or suppression of the brain issue, which can have many causes.The theoretical part describes the most common injuries of the brain; changes in behavior and fatic disorder in a patient with a brain injury, nursing care of patients with brain injury, communication between the nurse, the patient and his family, and also notes the importance of the nurse patient relationship and the significance of the patient's family. In the theoretical part, we have tried to give comprehensive and understandable information about the cooperation of nurses and family members of patients with brain injuries.For the empirical part of this thesis, a qualitative investigation was chosen. We used the method of data collection in the form of semi-structured interview . The survey was carried out in February 2014. Interviews with correspondents were videotaped and subsequently transcribed and processed by categorization of data. For the process the main category and subcategories were established which are, for clarity, shown in the diagrams . The interviews with correspondents were running at the University Hospital in Motol. After the approval of the matron the research investigation was initiated . Correspondents were asked prepared questions , depending on how the conversation developed, supplementary questions were considered. Interviews with nurses and family members were done separately because of the possible influence the nurses could have upon the family members. All interviews with the nurses and the family members were conducted at the University Hospital in Motol. The duration of the interview was approximately 45 minutes. At the beginning of the meeting with the correspondent, the basis of the interview was outlined and the reason for the interview was explained. None of the corcorrespondents minded the interview being recorded. Each interview was obtained with oral consent and explanation of anonymity.During the processing of the interviews, the method of open coding was used. Each sister and family was assigned a number. Then the answers of the nurses and the family members were numbered in the interviews. The rows have been numbered due to the possibility of referring to them. This method is called "paper and pencil" because of a synoptical process. For example, a nurse said line 3 and it is displayed as N1/3. A total of one main category and seven subcategories were established in both groups of corcorrespondents . The created categories and subcategories can be seen in the diagram one and four. The individual subcategories were depicted in the empirical investigation with the addition of interviews and quotes. The interviews were recorded on a CD, which is part of the thesis.The research sample consisted of two groups. The first group of correspondents consisted of nine nurses aged 24-50 years. Six nurses of all the interviewed completed tertiary education, two correspondents studied at a college and one respondent reached secondary education. Four correspondents were from the Neurosurgical Department, two correspondents from the Department of Anesthesiology and Resuscitation (ARO) and three correspondents from the Department of Chronic Resuscitation and Intensive Care (OCHRIP). The second group of the researched sample were relatives. The second group of the study sample was made up of four relatives, in varying relation to the patient, the families were in the age range from 30 years to 68 years.
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Film induced tourism
Čepková, Petra ; Abrhám, Josef (advisor) ; Kalábová, Markéta (referee)
The master thesis deals with new phenomenon in tourism film induced tourism. The main objective of the master thesis is to characterize film induced tourism which could be used as a tool to increase the attendance of the destination where the film was shot. Next main objective of the thesis is evaluation of film induced tourism in Europe, more precisely in Great Britain and Northern Ireland where the film induced tourism is at relatively advanced level. The master thesis is divided into the eight main chapters. The first part briefly defines term tourism, its importance and tips related to the place of realization. In the second chapter there is described management of destination, following with marketing direction in the fourth chapter. In the fifth part, there is definition of film-induced tourism, related history, supply, the opportunities of marketing promotion and typology of the film induced tourist. Next parts of thesis show significance and efficiency of film induced tourism, film induced tourism in Czech Republic and in the Europe where the main attention was focused on Great Britain and Northern Ireland. The last chapter refers to own research where the potential of film induced tourism was investigated by using quantitative and qualitative methods from respondents which were based in Czech Republic.
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International involvement in the peacebuilding process on Sri Lanka
Mojžíš, Michal ; Havlová, Radka (advisor) ; Burešová, Jana (referee)
The final months of Sri Lankan civil war, the 26 year military campaign between the Government of Sri Lanka and the insurgent separatist organization Liberation Tigers of Tamil Eelam, are marked by allegations of war crimes committed by both parties of the conflict, including attacks on civilians, summary executions of prisoners, enforced disappearances, restrictions on humanitarian assistance and recruitment of children. Since the attempts to put the Sri Lankan issue on the agenda of the United Nations Security Council failed on the unwillingness of China and Russia, the UN bodies in Geneva have taken a leading role in promoting the peacebuilding process on the island. The thesis aims to analyse the impact of the Geneva-based human rights bodies, in particular of the United Nations Human Rights Council, on the process of reconciliation in Sri Lanka, for which is crucial that the alleged violations of human rights in the last months of the civil war would be properly investigated and that the perpetrators would be held accountable. In order to put the activity of the UN Human Rights Council into broader context, the paper will examine the political development in Sri Lanka since the end of the civil war in 2009 as well as the failed efforts of Sri Lankan governments to launch the process of reconciliation.
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NUMERICAL ESTIMATION OF MICRO-CRACK PATHS IN POLYMER PARTICULATE COMPOSITE
Majer, Z. ; Náhlík, Luboš
Determination of composite mechanical behavior is one of important part during the composite tailoring. The aim of the present work was to estimate a micro-crack behavior in a polymer particulate composite. The composite was investigated by means of the finite element method -using ANSYS software. A two-dimensional three-phase finite element model was developed to analyze the crack growth behavior. The assumptions of the linear elastic fracture mechanics were considered and the Maximum Tangential Stress (MTS) criterion was used to predict the direction of the crack propagation. The effect of the elastic modulus of the interphase on the micro-crack propagation was investigated. The properties of matrix and particles were taken from experiment. It was shown that the interphase properties influence the stress intensity factor KI as well as the micro-crack paths. The results of this paper can contribute to a better understanding of the micro-crack propagation in particulate composites with respect to the interphase.
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Survey of continuing care for cardiacs in Czech Republic, with focus on nursing care.
DOLEŽEL, Jakub
Cardiovascular diseases are the leading cause of death in the Czech Republic. An increasing number of its inhabitants become cardiac patients who require a nursing intervention. Nursing in cardiology has an irreplaceable position in the cardiovascular care provision. The health care costs are rising, nursing has been undergoing many changes. Training of cardiology nurses gets changed, as well as the image and role of cardiology nurses in society. Cardiology nurses are much more independent, educated and organized. In cardiovascular facilities nursing care is being standardized and the quality of care is improving. In this thesis, focus is given to nursing in cardiology. In the introduction the issue of cardiovascular diseases is outlined, the major part is devoted to the concept of Czech nursing in cardiology. Individual stages of the system of care for cardiac patients in the Czech Republic and the status of cardiology nurses involved in the system are surveyed. Attention is also paid to the structure of cardiovascular facilities and expert companies in our country and abroad. The thesis has the title: Survey of continuity of care for cardiac patients in the Czech Republic with focus on nursing care. In total five goals, seven research questions and four hypotheses were stated. We surveyed the cardiology nurses´ attitude to lifelong learning, if they are building their own specific image, and if they ensure the continuity of care. Our objective was also to identify the role of nurses in education of cardiac patients and the level of cardiac patients´ knowledge. The research section is elaborated on the basis of a qualitative and quantitative investigation. The qualitative part was carried out by semi-structured interviews with cardiology nurses working in comprehensive cardiovascular centers. The quantitative part of the survey was conducted with patients of comprehensive cardiovascular centers. Seventy domestic and foreign sources of literature devoted not only to the issueof cardiovascular diseases were quoted. The research results are supposed to serve as a basis for coordinated efforts of all participating nurses and institutions to build a well-functioning and technically and economically efficient system of nursing care for cardiac patients in CR.
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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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Total contents and speciation of arsenic and selenium in plants growing in soils with different physico-chemical properties
Tremlová, Jana ; Száková, Jiřina (advisor) ; Vymazal, Jan (referee)
This dissertation thesis deals with uptake, accumulation and transformation of arsenic and selenium in plants growing on soils with different chemico-physical soil properties. The contents of arsenic were investigated in 99 wild plant species, coming from 27 different families and 6 different vegetables growing in arsenic contaminated soils. The results suggest that there are species-specific mechanisms which protects certain plants from the excessive uptake of arsenic from the soil. On the other hand, there are plants using a strategy of accumulation, which theoretically may increase the risk of arsenic entry into the food chain, whether through grazing cattle and wildlife or through consumption of vegetables growing on arsenic contaminated soils. The most prevalent arsenic compounds are AsV and AsIII. Other arsenic compounds occure as minor species. An important finding was detection of arsenobetaine in Plantago lanceolata L. and Carex praecox Schreb ..
The contents of selenium were examined in 73 species of wild plants, coming from 29 different families. The results suggest that naturally low levels of selenium in the soil of selected locations along with a low capability of selenium uptake via collected plant species lead to the low content of selenium in plant biomass which may contribute to selenium deficient throughout the food chain. Foliar application of selenate on wild plant communities and on some types of vegetables in our case Brassica oleracea var. italica can have a positive impact on increasing the selenium content in the aboveground biomass of these plants and by extension, increase the selenium content in the human diet. Dominant selenium compounds in the aboveground biomass of the analyzed plants were SeVI and selenomethionine, with variable proportion of other commonly occurring organic selenium compounds, which is mainly affected by plant species.
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