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The risks of suicidal behavior among adolescents:diagnostic, interventional and preventive option
Nekolná, Hana ; Kebza, Vladimír (advisor) ; Loneková, Katarína (referee)
The diploma thesis "Risks of suicidal behavior among adolescents: Diagnostic, intervention and preventive options" deals with suicidality and suicidal behavior among adolescents in the Czech Republic. The theoretical part of the thesis describes the basic terms of this topic, various approaches and understanding of this issue in the past and in the present. This work also deals with the forms, methods and motives of suicidal behavior. Furthermore it describes the age of adolescence as an independent evolutionary period in the life of man and analyses the risks of this life era. The theoretical part also contains a description of the epidemiology of this phenomenon and possible diagnostic, therapeutic and preventive approaches to suicidal behavior. The empirical part of this thesis describes the research in which the goal was to determine the connection of the increase of suicidal risk and the basic dimension of the personality (using the Freiburg's Personality Inventory), social support (by the Perceived Social Support Scale) and life engagement (through the Life Engagement Test). The research sample contained 99 respondents from the last years of one of Prague's grammar school and two of Prague's vocational schools. The results of this research confirmed the connection between a lowered suicidal...
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Finite reinsurance
Žďárský, Pavel ; Mandl, Petr (referee) ; Bohumský, Petr (advisor)
This thesis is divided into six chapters. The introduction reminds the appendages of traditional reinsurance. Definition, functions and clear generalization of both types and common provisions of finite reinsurance contracts is summarized in the second chapter. The third chapter is engaged in the available regulatory rules which relates with finite reinsurance. There is a preparatory act of the Czech Insurance law, the American standard FAS 113 and the European standard IFRS 4 described. Text is concentrates in different requirements on risk transfer of these standards. The fourth chapter describes risk transfer methods, which have been used until recently. Next, there is made a proposal of a new method, method of partial risk transfer, which eliminates significant shortcomings of the currently used methods. Features of partial risk transfer methods, comparing to other methods are described on two practical examples. There is a possible way of partial risk transfer accounting delineated in the fifth chapter. The conclusion is the summary of benefits of the new method.
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Safety Study of Refuelling Station
Šimková, Markéta ; Tabas, Marek (referee) ; Babinec, František (advisor)
Safety study of refuelling station. Diploma thesis, Institute of Metrology and Quality Assurance Testing, Brno University of Technology. This Diploma thesis deal with quantitative risk assessment of exposure. It means for population, animals and environment stocking, transport and manipulation with vairous fuel at refuelling station in particular area and influence of other industrial effects in close area of this refuelling station. There is more specified a Method of Dow´s fire and explosion Index, method of Guidelines for Quantitative Risk Assessment and method FMEA (Failure Mode and Effect Analysis).
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Portfolio diversification
ŠÍP, Martin
The goal of this bachelor thesis is to show how the choice of stocks impacts the portfolio diversification in relation to risk and return. The risk was calculated as standard deviation and historical return rate was considered. The theoretical part explains basic terms related with portfolio diversification, Markowitz model, capital stock and most important factors that lead to the optimal portfolio creation such as return, risk and covariance. The practical part explains in detail, how to create an optimal portfolio. Ten companies from different sectors were randomly chosen for this bachelor thesis. These companies' shares are traded on the New York Stock Exchange. The covariance of these shares is lower than one. The next step was to calculate historical return rate and historical risk of portfolios. The highest value of historical return rate was 2.31 % and the lowest value of historical risk achieved 22.77 %. Subsequently, the efficient frontier was determined. The efficient frontier is the set of optimal portfolios that offers the highest expected return for a defined level of risk or the lowest risk for a given level of expected return. The lowest value of portfolio risk was 2.97 % with a return of 1.38 % and the highest value of portfolio risk was 4.03 % with a return of 2.13 %. The investor chooses the portfolio which maximizes his expected benefit.
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Inland waterway transport of dangerous goods
Turek, Martin ; Novák, Radek (advisor) ; Seidlová, Andrea (referee)
When transporting dangerous goods, there are many direct and subsidiary risks associated with transportation of such goods for people, property, animals, infrastructure and even so environment. This diploma thesis deals with way of such transport by using inland waterways. It's targeted at anybody who wants to be informed of international legislation, possibilities, risks and other issues associated with inland waterway transport process.
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Risk Analysis of Construction Chemicals Storage
Ruml, Jiří ; Tabas, Marek (referee) ; Babinec, František (advisor)
Risk Analysis of Construction Chemicals Storge Diplom Thesis, Institute of Metrollogy and Quality Assurance Testing, Brno University of Technology, Faculty of Mechanical Engineering This diploma thesis focuses on risk assessment and possible assessment measure necessary when the amount of storage load containing Ethylbenzen increases by 300 percent.
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Security of wireless computer networks
Jelínek, Martin ; Pelka, Tomáš (referee) ; Doležel, Radek (advisor)
The master's thesis deals with the issue of Wireless Local Area Network (WLAN) from the viewpoint of the security and functional principle of security mechanisms. The transition to the issue concerning the security is accompanied by the methods of wireless data transmission operating on the level of physical layer (FHSS, DSSS, OFDM, MIMO), which is followed by the summary of individual 802.11 standards. The next part deals with the issue of shared transmission medium (CSMA/CA), influence of interference and correcting mechanisms (RTS/CTS). Within the security, the principles of the authentication along with the commonly used methods of security (WEP, WPA, WPA2) are described in detail. The first part concerning security deals with the security in the form of the WEP protocol, which is considered insufficient nowadays and points out the imperfect implementation and the consequent risks. The following part describes the security in the form of WPA which eliminates the implementation weaknesses of the previous WEP security protocol. The description of commonly used mechanisms of authentication (PSK, 802.1x), required temporary key management (PTK, GTK), data integrity (MIC) and encryption which uses TKIP protocol are also included. The last part, possible WLAN security, is aimed at the full support of 802.11i standard, which is called WPA2 (sometimes RSN). That part describes the basic encryption security element CCMP, which is based on the AES block cipher modes. The practical part of the thesis deals with the security verification of current wireless networks. In the process of verification the accessible HW means and programming tools of Open Source Software (OSS) are used. By means of verification it has been pointed out that there are possible security risks resulting from the security method which has been used. Also several recommendations how to reduce the security risks of the used method to minimum are mentioned.
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Exchange rate risk and ways of its management
Bošanská, Radka ; Taušer, Josef (advisor) ; Bureš, Rudolf (referee)
The aim of the diploma thesis is to analyze the exchange rate risk, to suggest and demonstrate the possibilities of the risk management in the case study of AWT Group. The conclusions of the case study are generalized to be utilizable for other companies. Diploma thesis is divided into two main parts - theoretical part and case study. Concept of exchange rate risk and ways of its management are explained in the theoretical part. The theoretical knowledge is applied to praxis in case study of AWT.
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Specifics of nursing care in patients after transapical aortic valve implantation.
VOTRUBOVÁ, Nataliya
Transcatheter aortic valve implantation (TAVI) is a new and an attractive method in cardiology and as well as in cardiac surgery. It is constantly evolving method which has been developed as an alternative to standard open surgery, especially in patients with severe symptomatic aortic stenosis with unacceptably high perioperative risk or patients who are not suitable for conventional open heart surgery because of age and comorbidities.A teamwork is very importantfor this new method and approach. The choice for TAVI is discussed by the institutional multidisciplinary heart team, typically consisting of interventional cardiologists, imaging-specialists, cardiac surgeons and anaesthesiologists. The first implant in a human being was performed by Cribierin 2002. In Czech Republic this method was first used in 2008. Transcatheter aortic valve implantation (TAVI) was accepted as a minimally invasive alternative to open surgery. This method does not require the use of cardiopulmonary bypass, and cardiac arrest. Other several benefits includinglower risks of bleeding and stroke events, better wound healing, less pain, as well as more rapid early recovery due to preservation of continuity of the sternumthat result in shorter durations of stay in the hospital, earlier rehabilitation and faster returns to normal life. In the presented work was used a combination of qualitative-quantitative methods of investigation. The data was obtained by using the quantitative research. The main technique was using the questionnaires designed for nurses working at the Department of Cardiac Surgery, Hospital Czech Budejovice, a. s. These results were backed up by the implementation of qualitative research, which investigated the patients and physicians view on monitored issues. Questioning method using a semi structured interview technique was used for qualitative research. The results of the survey were processed using descriptive statistics charts in LibreOffice Calc and using diagrams created in LibreOffice Writer. Qualitative results of the research were transcribed from audio recordings and coded, and the base code was created nine categories of interviews with clients/patients and three categories of interviews with doctors. The aim of this work was to explore the specific problem of nursing care about the clients / patients after transapical aortic valve implantation. On the base of our obtained data it is evident, that the client/patient after TAVI may be positioned sideways, the use of surgical drains are less frequently, so the care about the surgical wounds is simpler, patients report less pain in the surgical wound and postoperative rehabilitation and recovery is shorter. H1 - The nurses take care about the clients/patients after transapical aortic valve implantation in the same way as about the clients/patients after open aortic valve replacement, without realizing the differences between the patients treated with different approaches, was not confirmed. The nurses'sees/reported major differences in invasiveness and extent of providing care, rehabilitation, convalescent, in the duration of the hospitalization and better cosmetic effect. The results of the research can serve as a basis for creating the standards of nursing care or educational material for clients/patients. It is also possible to present the results of this work at a specialized seminar for non medical healthcare workers and results can also increase the quality of nursing care about the clients/patients after transapical aortic valve implantation.
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Nové postupy biomonitoringu cizorodých látek ve vodním prostředí
ČERVENÝ, Daniel
Within the presented work, several approaches of biomonitoring were studied. A well-established method for human health risk assessment was applied to evaluate the quality of fish from open waters in the Czech Republic. As this work is targeted on sport fishermen, who frequently consume their own catches, besides the publication in scientific journal, a brochure with results of this study was distributed via the Czech Fishing Union. Health risks for consumers related to the consumption of wild fish were found strongly species and locality dependent. As there is no risks related with the consumption of carp (Cyprinus carpio) at all investigated sites, frequent consumption of predatory fish should be avoided at some fishing grounds. The use of passive samplers has become more and more attractive in the last two decades. As these devices are able to mimic the biological uptake of chemicals, their potential for replacing fish as bioindicators in routine biomonitoring programmes is evident. In our study, the comparison between analysis of fish tissues and POCIS extracts from selected sampling sites confirms this idea about interchangeability of these indicators in the case of PFASs as target pollutants. Moreover, no metabolic transformation of contaminants present in water take place in passive samplers contrary to living organisms, thus these reflect the actual contamination at the locality more precisely. The use of passive samplers completely fulfils the internationally accepted principles of Replacement, Reduction, Refinement (the three R´s). Another promising approach using YOY fish as bioindicators was evaluated within the present study. Multispecies samples of YOY fish homogenate was found as a better indicator for wide range of pollutants than muscle tissue of adult fish within one species from the same locality. As all inner organs and tissues are presented in analysed samples, more target pollutants in higher concentrations are detected compared to the muscle of adults. Besides the higher sensitivity in pollutants detection and quantification, practical and economic benefits are of concern in the case of the YOY fish approach. The YOY fish approach also particularly fulfil the three R´s strategy, as sampling of this age group of fish has a smaller impact on the environment than the sampling of adults. In case of mercury, that was found as a limiting contaminant for the consumption of fish from open waters in the Czech Republic, a nonlethal method of finclips sampling can be used for the monitoring of this compound in aquatic environments. Besides the monitoring, our optimised method for the estimation of muscle tissue concentrations could be used for human health risk assessment as well. The difference between real muscle concentrations and concentrations estimated using our method differs less than 10% in most of the investigated localities. Benthic organisms are an important part of the food web in aquatic environments, but insufficient information about its contamination is available. In another study included in this thesis, first evidence about bioaccumulation of certain pharmaceuticals in benthic organisms was described. Although, pharmaceuticals are generally considered to be not accumulative in organisms, our study proved that certain pharmaceuticals have bioaccumulation potential. From this finding, it is evident that not only the concentrations of pharmaceutical dissolved in water but also the diet represents an important exposure pathway of contamination by these compounds for organisms (fish) inhabiting aquatic environments.
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