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Acceleration of Object Detection Using Classifiers
Juránek, Roman ; Kälviäinen, Heikki (referee) ; Sojka, Eduard (referee) ; Zemčík, Pavel (advisor)
Detekce objektů v počítačovém vidění je složítá úloha. Velmi populární a rozšířená metoda pro detekci je využití statistických klasifikátorů a skenovacích oken. Pro učení kalsifikátorů se často používá algoritmus AdaBoost (nebo jeho modifikace), protože dosahuje vysoké úspěšnosti detekce, nízkého počtu chybných detekcí a je vhodný pro detekci v reálném čase. Implementaci detekce objektů je možné provést různými způsoby a lze využít vlastnosti konkrétní architektury, pro urychlení detekce. Pro akceleraci je možné využít grafické procesory, vícejádrové architektury, SIMD instrukce, nebo programovatelný hardware. Tato práce představuje metodu optimalizace, která vylepšuje výkon detekce objektů s ohledem na cenovou funkci zadanou uživatelem. Metoda rozděluje předem natrénovaný klasifikátor do několika různých implementací, tak aby celková cena klasifikace byla minimalizována. Metoda je verifikována na základním experimentu, kdy je klasifikátor rozdělen do předzpracovací jednotku v FPGA a do jednotky ve standardním PC.
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Remediation of former In-Situ uranium mining region.
Kříž, Jakub ; Kalous, Jaroslav (referee) ; Jícha, Jaroslav (advisor)
Remediation process of region, formally exploited for chemical leaching of uranium, is based on pumping water contaminated mostly by residuals of sulfuric acid from the relevant geological horizons. The contaminated water is then treated in a chemical plant. In the treatment process evaporators play the key role. Presently operating evaporators – three units – are of falling film type. Heating service is provided by compressed vapor that is generated by evaporators. For driving the compressors and associated circulating pumps of each unit electric power of 3,4 MW is required. In the evaporators treated solution is distributed into individual tubes by nozzles of cyclone type that are mounted at the top end of tubes. In the evaporators feed solution contains calcium sulfide of low concentration. Once the calcium sulfide concentration in the evaporating process reaches the state of saturation, even locally, fouling is initiated. Thus the solids start to grow on the inner surface of the tube wall and the nozzle’s openings become restricted. The evaporator performance – evaporating rate – gradually declines and when it reaches the bottom limit the evaporator has to be shut down. This is followed by carrying out the cleaning procedure. At the time when the evaporators started operating (1996) the period between shut downs lasted around a half a year. However, gradually, this period has become substantially shorter – presently it may even last one week only. The thesis proposes two ways of approaching the present hardly acceptable state. First, replacement of distributing nozzles by a set of properly perforated sieve trays secures the uniform distribution of solution into each individual tube. Second, evaporators’ duty will be taken over by newly build multi-flash concentrator that will substitute the presently operating evaporators. Configuration of this new equipment is derived from widely used multi-flash distillation of sea water. Heat required by the concentrator’s end heaters is drawn from a gas turbine exhaust gas. Steam provided by Heat Recovery Steam Generator is supplied to the condensing heat exchangers installed on the evaporator’s feed stream. Generator coupled to the gas turbine, fueled by natural gas, provides the electric power of 30 MW for export.
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Ectopic pregnancy - etiology, modern diagnostic and therapeutic approach
Fischerová, Michaela ; Drahoňovský, Jan (advisor)
The goal of this work entitled Ectopic pregnancy - etiology, modern diagnostic and therapeutic approach, was to give a complete and complex summary of this topic. Ectopic pregnancy is the most frequently occurring acute abdomen episode in the Czech Republic and it is an important factor of female morbidity and mortality, therefore it deserves special attention. The paper clearly states the risk factors of ectopic pregnancy together with methods and recommendations for the prevention and therapy of the risk factors. The following part of the text gives the reader a closer look on the different possible clinical forms of ectopic pregnancy. Further, the possibilities of modern diagnosis are analyzed, with a major importance given to the use of ultrasound imaging. The end of the work is given to today's therapeutic possibilities. The condition as a whole, as well as specific situations are described.
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Visualization of selected flows of water and cryogenic helium using tracer particles
Pilcová, Veronika ; Skrbek, Ladislav (advisor) ; Kohout, Jaroslav (referee)
Flow visualization techniques have recently been applied for the investigation of various cryogenic flows of liquid helium. Particle image velocimetry and particle tracking velocimetry techniques, proven in the past as very fruitful in many scientific and industrial areas of research, are being used for the analysis of cryogenic flows. The Joint Low Temperature Laboratory at the Charles University in Prague is the first in Europe to employ flow visualization techniques to investigate liquid helium flows. The approach had to be optimized due to a number of technical and fundamental dificulties, i.e., the optical access to the helium bath and choice of suitable tracer particles. Water experiments at room temperature were performed to prove that the experimental apparatus is well-suited for the low-temperature experiments performed as the main part of the work. The latter focused on thermal counter flow. The results from both, room-temperature experiments and low-temperature experiments are discussed and positively compared with well-known theoretical results.
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Current preferences on Internet Air Transport Services
Nejezchlebová, Kristýna ; Kubálková, Markéta (advisor) ; Průša, Přemysl (referee)
Bachelor thesis "Current preferences on Internet Air Transport Services " examines the preferences of passengers in the passenger air transport sector . The main objective is to find the factors which influence consumers when choosing airlines and the flights themselves . Work focuses specifically on low-cost aviation sector . The first chapter defines the terms relating to air transport and are characterized by different types of airlines . The second part is focused on low-cost airline Ryanair . There is a specified business model, marketing and change pro- customer approach in recent years . The final chapter is devoted to new knowledge, recommendations for the Czech market and SWOT analysis of Ryanair. This work was undertaken on the basis of a survey .
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Experiences of health workers with acupressure
ROUBÍČKOVÁ, Radka
The abstract of the diploma thesis is focused on the acupressure and its influence of backache of medical staff. We chose the theme of acupressure because it is a non-invasive treatment method which can be practiced by everyone in the comfort of the home and no aid is necessary to have, just the basic knowledge and training how to perform acupressure. Acupressure is not physically or time consuming and that is why it is considered as a suitable means as an additional treatment of pain and other health disorders. It can improve nursing care. The theoretical part deals with pain and pain of medical staff who are the highest risk group of backache in the lumbar region. The backache is the most frequent cause of incapacity for work. Furthermore, in the theoretical part we deal with acupressure, one of the methods of alternative medicine. For the processing of the theoretical part, we used the available foreign and Czech literary sources. The empirical part of the diploma thesis is a quantitative method. The results obtained from the research were processed in the overview tables and case reports. For the thesis we set two research objectives. The first objective was to find out the experience of medical staff with acupressure. The second objective was to verify the influence of the techniques of acupressure for backache of medical staff. On the basis of the aim two hypotheses were created. The first hypothesis should show whether the backache will be softened by application of the acupressure techniques. The second one shows whether there is the difference in approach of nurses and doctors to perform acupressure.
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Differentiation of offers and methods of working physiotherapy of persons with a mental or combined handicap in a practice of social service providers and another subjects.
POŠMUROVÁ, Nikola
In the Bachelor's thesis I have dealt with differentiation of tenders and rehabilitation methods. Specifically, individuals with mental or multiple disabilities and for providers of social services and other bodies. In the theoretical part I focused on defining the basic terms relating to that issue. In the introductory chapter I dealt with the definition of the concept of mental disability, causes of its creation and definition of degrees of mental retardation. The next chapter is devoted to the combined disability, specifically the yoke of the definition, causes of and classification. In the third chapter is devoted to the importance of the work, the status of the work in a person's life and the status of work for persons with disabilities, including individuals with mental or multiple disabilities in Bachelor thesis I. In the next chapter, I deal with comprehensive rehabilitation system, specifically the remedies rehabilitation, educational resources, social resources, rehabilitation, rehabilitation and special attention devoted work resources, rehabilitation, which will directly affect the Bachelor thesis. Furthermore, I determine a target group the work of rehabilitation and the preconditions for its implementation. In other chapters is devoted to the specification of tools and resources work rehabilitation, employment policy tools and I define jobs that are offered to persons with intellectual disabilities. In the practical part of the thesis, first determine the main aim and target work. The main goal was to determine what are the menus and methods of rehabilitation for people with mental or multiple disabilities with providers of social services. As the target I had set to determine what are the possibilities of transmission from individual to social services on the open employment market. Specifically, I've focused on the resources provided by the rehabilitation of daily, weekly care centers or day service center, in addition to the socio-therapeutic workshops, in a sheltered employment, and employment on the open employment market. To meet the objectives I used a qualitative approach, specifically the semi-structured interview with six providers of social services of the South Bohemian region The analysis of the information obtained, I discovered that if the device is operated daily, weekly social welfare institution or Centre, day services, the services provided are identical, not different from each other. In the case of socio-therapeutic workshops is the diversity of the wider, each device provides a variety of services, different options, some devices have socio-therapeutic workshops directly on the device, others have socio-therapeutic workshops and externally, outside of your device. Protected jobs are also in the majority of providers of social services offered both within and outside the device, always the odd jobs, such as in the kitchen, cleaning, in teahouses and the like. It always depends on the type and degree of disability, on the basis of a levy for the client to the appropriate activities. Location of the client on the open employment market is not very common in most devices, some devices that offer clients or do not provide. Partial objective was to detect transmission, I found that the only limiting factor is the client's disability that limits its options and device options, of course, that the services it offers and delivers. The aim of all devices is to achieve the greatest possible degree of autonomy of the client and allow it to advance from care centers or day service center in the socio-therapeutic workshops, found a protected job, and a job on the open employment market.
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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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Lifestyle of patients with peripheral arterial disease before and after surgery
REZKOVÁ, Helena
Theoretical background: Peripheral arterial disease is a serious disease of Loir limb arteries which originates from atherosclerosis. The theoretical part deals with the lifestyle. There are mentioned basic risk factors of chronic forms. Further described are the pathophysiology changes generated on the basis of atherosclerosis and related causes for the origin of the disease. Subsequently there are explained methods of classification, developed clinical symptoms, diagnosis and therapy. This section also looks at the role of a nurse in the care of patients with peripheral arterial disease. Objectives: The aim of this work was to evaluate how patients with peripheral arterial disease changed their lifestyle after invasive vascular surgery. There were provided the following research questions: How do patients with peripheral arterial disease approach to the prevention of risk factors? What is in patients with peripheral arterial disease the main impuls for the possible change of their lifestyle? What influences surgery patient's attitude to risk factors for peripheral arterial disease? How crucial is a lifestyle change in patients after surgery for peripheral arterial disease? Methods: The theoretical part is processed using expert sources. The empirical part of the theses was processed using qualitative research. The chosen technique for data collection was semi-structured interviews with patients, with prepared open questions. The research was done in several phases - the first interview was conducted at the patient admission department (before surgery), followed by the next phase after three months, and 6 months after surgery. The interviews were recorded on a prepared form, then transcribed into electronic form and analyzed by open coding method. Results: The research showed that surgery can sometimes be triggered by changes in the patient's lifestyle. The first interviews in the preoperative period focused on how respondents felt, what was their lifestyle before surgery for atherosclerotic changes of the lower extremities. One of the questions was focused on patient knowledge about risk factors for the development of PAD and possible prevention. The second phase of interviews took place 3 months after the surgery. It dealt with the question about the respndents´ lifestyle, the respondents in the postoperative period, whether there were any changes. Some positive changes occurred in eating and there were some changes in doing physical activity. The third stage was carried out six months after surgery, again in order to detect changes in lifestyle. Minor changes came in smoking habits, the issue of diet and physical aktivity. Questions were also focused on the psychological level. We found out who helped patients and what was most motivating in implementing changes. In the conclusion/summing up question the patients marked themselves ow they managed to make a change. Conclusion: The number of patients with peripheral arterial disease and other cardiovascular diseases is increasing. The basis is the start to modify risk factors, namely tobacco use,dietary habits, physical activity. The medical staff members participate on changes in patients´ lifestyle by appropriate education. The problem occurs when the patient despite the support of close people can not cope to carry a twist in their life. There should a medical staff member offer a professional help to deal with this important step. Practical use: The aim is to draw attention to the expansion of education about lifestyle changes for patients diagnosed with PAD also in the postoperative period. Patients who are released to home care should receive enough information that would convince them to change their attitude towards their health, and that surgery is only one of the ways to prevent further attacks and complications. Results can improve communication with patients and focus on increasing their awareness and possibly offer assistance.
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The need for security and safety in connection with a planned surgery with the patient's perspective and nurses
BOHDALOVÁ, Jaroslava
A planned operation performance always affects patient´s needs for assurance and safety. It is important to provide necessary information connected with the planned operation performance itself so that the patient can feel assure and safe. The key role for the patient and her/his needs for assurance and safety is in general nurse´s hands because she is the closest person to the patient and can help to inspire her/his needs for assurance and safety with konfidence best through the aid of her knowledge and skills that she should have as well as through the aid of her attitudes. The target of the thesis was to find out how a planned operation performance affects patient´s needs for assurance and safety and how a general nurse inspires patient´s needs for assurance and safety connected with a planned operation performance with confidence. The following research questions were stated: How does a planned operation performance affect patient´s needs for assurance and safety? How does a general nurse affect patient´s needs for assurance and safety connected with a planned operation performance to inspire her/him with confidence? What is insufficient in filling patient´s needs for assurance and safety before a planned operation performance? How can a general nurse help a patient control her/his fear and state of anxiety related to a planned operation performance? The method qualitative research with the use of depth interview was used to figure out the investigation. The respondents were willing to record the interview which were verbally rewritten and then subjected to the contents analysis by the method paper and pencil. From the research it is clear that a planned operation performance affects patient´s needs for assurance and safety in a negative way disregarding to her/his previous experience. Patient´s worries and negative feelings can be eliminated by a general nurse who treats her/him as equal, taking up an individual approach, informing her/him about all performances and proceedings, having a calming and welcoming way of communication, using empathy and listening as well as trying to meet patient´s wishes according to her possibilities. The research reveals the advantage of patients´ readiness for planned operation performances. Patients can learn it in the framework of educational proceeding in the out-patients´ department at the same time when they learn that they are going to be operated. The research also shows that general nurses do not have enough knowledge in the sphere of therapeutical communication. The results indicate that it would be suitable to start educating patients as soon as it is known how their disease will be solved and treated in order to reduce the negative impact of surgical treatment to patients´ needs for assurance and safety. General nurses should complete their knowledge and skills to be able to help patients to cope with their difficult life-situation. On the basis of the research investigation and after the consultation with the senior nursing officer, the training course will be organized. The topic of the training course will concentrate on communication with patients before planned operation performances with a view to therapeutical communications and therapeutical interviews. Other discovered facts, for example, the lack of information provided to patients and possibilities regarding better patients´ readiness for planned operation performances will surely be solved by the hospital management.
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