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A pair of phase-synchronized semiconductor lasers for length metrology
Hucl, Václav ; Holá, Miroslava ; Čížek, Martin ; Řeřucha, Šimon ; Pham, Minh Tuan ; Pravdová, Lenka ; Lazar, Josef ; Číp, Ondřej
Semiconductor lasers are increasingly widespread in areas that have been so far dominated by He-Ne lasers. One of such areas is the length metrology, where He-Ne laser operating at 633nm wavelength is still a traditional source of coherent light for laser interferometers distance measuring. The advantages of semiconductor lasers compared with He-Ne laser are greater optical power and a significantly wider range of wavelength tuning without mode jumps. Another advantage is the possibility of frequency modulation of wavelength of the laser diode by directly changing the injection current. The benefits predetermine these laser diodes for the realization of dual-frequency laser sources for heterodyne interferometry. In this case, using a phase-locked loop technique the optical frequency of a laser diode is locked to the optical frequency of another laser diode with a certain frequency offset in the MHz order. In our contribution we present utilization of DBR laser diodes in implementing a dual-frequency laser source for laser interferometry with heterodyne detection.\n
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Acceleration Methods for Evolutionary Design of Digital Circuits
Vašíček, Zdeněk ; Miller, Julian (referee) ; Zelinka,, Ivan (referee) ; Sekanina, Lukáš (advisor)
Ačkoliv můžeme v literatuře nalézt řadu příkladů prezentujících evoluční návrh jakožto zajímavou a slibnou alternativu k tradičním návrhovým technikám používaným v oblasti číslicových obvodů, praktické nasazení je často problematické zejména v důsledku tzv. problému škálovatelnosti, který se projevuje např. tak, že evoluční algoritmus je schopen poskytovat uspokojivé výsledky pouze pro malé instance řešeného problému. Vážný problém představuje tzv. problém škálovatelnosti evaluace fitness funkce, který je markantní zejména v oblasti syntézy kombinačních obvodů, kde doba potřebná pro ohodnocení kandidátního řešení typicky roste exponenciálně se zvyšujícím se počtem primárních vstupů. Tato disertační práce se zabývá návrhem několika metod umožňujících redukovat problem škálovatelnosti evaluace v oblasti evolučního návrhu a optimalizace číslicových systémů. Cílem je pomocí několika případových studií ukázat, že s využitím vhodných akceleračních technik jsou evoluční techniky schopny automaticky navrhovat inovativní/kompetitivní řešení praktických problémů. Aby bylo možné redukovat problém škálovatelnosti v oblasti evolučního návrhu číslicových filtrů, byl navržen doménově specifický akcelerátor na bázi FPGA. Tato problematika reprezentuje případ, kdy je nutné ohodnotit velké množství trénovacích dat a současně provést mnoho generací. Pomocí navrženého akcelerátoru se podařilo objevit efektivní implementace různých nelineárních obrazových filtrů. S využitím evolučně navržených filtrů byl vytvořen robustní nelineární filtr implusního šumu, který je chráněn užitným vzorem. Navržený filtr vykazuje v porovnání s konvenčními řešeními vysokou kvalitu filtrace a nízkou implementační cenu. Spojením evolučního návrhu a technik známých z oblasti formální verifikace se podařilo vytvořit systém umožňující výrazně redukovat problém škálovatelnosti evoluční syntézy kombinačních obvodů na úrovni hradel. Navržená metoda dovoluje produkovat komplexní a přesto kvalitní řešení, která jsou schopna konkurovat komerčním nástrojům pro logickou syntézu. Navržený algoritmus byl experimentálně ověřen na sadě několika benchmarkových obvodů včetně tzv. obtížně syntetizovatelných obvodů, kde dosahoval v průměru o 25% lepších výsledků než dostupné akademické i komerční nástroje. Poslední doménou, kterou se práce zabývá, je akcelerace evolučního návrhu lineárních systémů. Na příkladu evolučního návrhu násobiček s vícenásobnými konstantními koeficienty bylo ukázáno, že čas potřebný k evaluaci kandidátního řešení lze výrazně redukovat (defacto na ohodocení jediného testovacího vektoru), je-li brán v potaz charakter řešeného problému (v tomto případě linearita).
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Security of Contactless Smart Card Protocols
Henzl, Martin ; Rosa, Tomáš (referee) ; Staudek, Jan (referee) ; Hanáček, Petr (advisor)
Tato práce analyzuje hrozby pro protokoly využívající bezkontaktní čipové karty a představuje metodu pro poloautomatické hledání zranitelností v takových protokolech pomocí model checkingu. Návrh a implementace bezpečných aplikací jsou obtížné úkoly, i když je použit bezpečný hardware. Specifikace na vysoké úrovni abstrakce může vést k různým implementacím. Je důležité používat čipovou kartu správně, nevhodná implementace protokolu může přinést zranitelnosti, i když je protokol sám o sobě bezpečný. Cílem této práce je poskytnout metodu, která může být využita vývojáři protokolů k vytvoření modelu libovolné čipové karty, se zaměřením na bezkontaktní čipové karty, k vytvoření modelu protokolu a k použití model checkingu pro nalezení útoků v tomto modelu. Útok může být následně proveden a pokud není úspěšný, model je upraven pro další běh model checkingu. Pro formální verifikaci byla použita platforma AVANTSSAR, modely jsou psány v jazyce ASLan++. Jsou poskytnuty příklady pro demonstraci použitelnosti navrhované metody. Tato metoda byla použita k nalezení slabiny bezkontaktní čipové karty Mifare DESFire. Tato práce se dále zabývá hrozbami, které není možné pokrýt navrhovanou metodou, jako jsou útoky relay.
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Ratings business accounts
ŠUSTROVÁ, Lucie
The diploma thesis is focused on using methods of multiple criteria decision making, in this case about business accounts. In theoretical part is described the banking systém of Czech republic, then methods of multiple criteria evaluation.The basic aim of this work was to evaluate the order of business accounts in terms of advantageousness, which are offered by banks on the banking market in the Czech republic. The sectional aim of this work is to get known with the problems of optimal choice of business accounts for a certain group of consumers, which in this case are small businesses. Before choosing a new business account it is always necessary to carefully explore banking market and its offers of business accounts. The important part of this thesis is that the certain client has to consider his preferences before we use quantitative methods. In this diploma thesis has also done a survey about the evaluation of business accounts. Then there are compared results of using methods of multiple criteria evaluation of the survey and model client. In conclusion, the results are described in the order of banking products from the best to the worst business account.
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Analysis of the Economy of the Town Horní Planá
SOUČKOVÁ, Lucie
The diploma thesis is focused on budgetary economy of selected minucipality, in this case the town Horní Planá. There are described functions of the municipality, its institutions and a property, separation of the property and management with it. The thesis is focused on a budgetary economy of a municipality, a budget, a budget composition, where are defined budgetary incomes and expeditures and subsequently a budgetary outlook is analyzed there. The aim of this thesis is to analyze the economy of the town Horní Planá, which is performed on the data in the next five years, based on the analysis recommend possible measures to achieve the optimum relationship between the economy, efficiency and effectiveness, or finding potential funding sources. Partial aims are evaluation of the progression budgets in the period and to determine the effects of ganges of incomes and expenditures in different years, to analyze cash flow over the period and evaluate influences on cash flow and the analysis of the property of selected municipality and its funding.
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The actor and the character
Čelebič, Vuk ; HRBEK, Daniel (advisor) ; PAVLATA, Michal (referee)
This work is dedicated mainly to the findings about character and acting as well as about myself, which I have gained during the rehearsing of the character Neschastlivtsev in Alexander Nikolayevich Ostrovsky´s play The Forest. This work not only describes the rehearsals of this play from Neschastlivtsev´s view, but also presents other examples of a director´s work and an actor´s interpretation, both from rehearsing before the boarding of the alumni class and from the following outside-of-school acting experiences.I have tried to define the method of my work on this play and on this concrete character; this method may resemble other methods on many other characters in some way. However, Neschastlivtsev is a very unconventional character - maybe because he is an actor himself, which makes him more approachable to the performer. He is a timeless and rare character as well; that is also one of the themes that I have covered in my work
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Human and social capital in primary education
KOKŠTEIN, Jiří
The thesis contains a theoretical insight into the studies that the issue of human and social capital involved from different perspectives, engage their evolution over time, their measurability, examine them, and complemented with other evidence. This part contains relation of human and social capital in relation to the aging of the human population and focuses on the human capital of older workers. Theoretical study ends with an insight into the basic education, the role of teacher and seeks to provide information on surveys already conducted in the area of education, which in the application of serve for me compared to the data obtained from the survey. The application part is focused on the teaching staff of primary schools. Education in currently globalized world, changing not only its content but also methods and forms of work. Irreplaceable role in this process is played by educators. To meet all the demands placed on them, it is essential that they pay close attention to their continuing education and sharing of acquired education, which is essential to the growth of human and social capital, because they are interacting. The work examines selected sample of teachers and approaches to this issue by detecting what is education motivates them whether they are satisfied with the benefits of educational events, what type of education they prefer etc. Working findings further analyzes looking for relationships between age and sex educators according to the hypotheses . Educator is someone who is in constant contact with other people. This of course also formalizes its attitudes and experiences. As a human being perceives the views of society and shapes on her own views, which it subsequently may influence the exercise of his profession. Therefore, in this part of the thesis is dedicated to exploring and bridging social capital, which determines the size of the circle of people with whom the teachers generally meet and interact. The last research that is possible to find thesis, it is perceptions of social status of teachers by themselves.
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Assistance as compensatory and supporting means of the special pedagogy
PÝCHOVÁ, Lucie
My Bachelor thesis is focused on the topic of "Assistance as a compensation and support to special pedagogy". The aim of my bachelor thesis is to complete theoretical knowledge related to the assistance phenomenon and to analyse the occupation of personal assistant. The aim of practical part of my bachelor thesis is to implement the comparison of legislative determination and provable working activities carried out by pedagogical and personal assistant. In accordance with the aimes specified above has been established two partial aims. 1st aim: to examine what the assistants´ work motivation is. 2nd aim: to examine the level of assistants´ self contentment.Thesis is devided into two parts theoretical and practical one.Theoretical part is devided into three units. First unit defines the key words: assistance, compensation and support, special pedagogy, social integration and inclusion. Second unit is focused on personal assistance itself. Related key words are defined as well. In this unit I also describe a historical development of the personal assistance process, working demands placed on potential assistant, possible complications related to mentioned occupation and of course everyday work routine. Third unit is focused on the personality of assistant and assistants themselves. I describe the historici development of the assistants´ personality, work requirements, work duty and cooperation with parents and educational institutions. Practical part contains the specification of work aims, methodology of investigation, related data gathering process and of course the data analysis. I interviewed pedagogical assistants just as the personal ones. All the data and results contained in my bachelor thesis can be used for needs of any related organisation recruiting new assistants, because it contains informations which could be useful when hiring people. My thesis can be also used as a background material for any further students.
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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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Cystic fibrosis and Nutrition
PECHOVÁ, Jana
The name of bachelor's thesis is "Cystic fibrosis and nutrition". Cystic fibrosis is hereditary chronic disease. It is dysfunction ducts of chloride in a human organism. The manifestation of cystic fibrosis is large quantities of a mucus in the respiratory and digestive system of patient with this diagnostic. This disease we put in the group of very rare illnesses. The smaller percentage citizens in the Czech Republic have this disease. For the people with cystic fibrosis is priority follow recommended eating habits. Prognosis of this disease is getting better and patients can live full-value life. This thesis dealing with how observe the recommended eating habits and eating regimens. The thesis contains some objectives. First, there is finding out whether children who suffer from cystic fibrosis can all sorts of foodstuffs whether they have special requests for quality and preparation of foodstuffs. The second most important objective is appraisal of diets some sample of people with cystic fibrosis. For objectivity this thesis was chose four respondents in age bracket from three to eighteen years. On the basis of evaluation their week-long diet, questionnaires with their parents and with them and manoeuver a conversation will be to find out whether children observe all principle of recommended eating regimens. In the theoretic part of the thesis are use opinions of experts who are occupying with cystic fibrosis exhaustively. Their experience show how is important to choose right diet and observe correct eating principles and eating regimens. These opinions are use in the practical part. Conclusions from discussion can be used for practical work nutritive therapists who can meet with children with cystic fibrosis.
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