|
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
|
|
Phase coherent transfer of stable optical frequency for sensory networks
Čížek, Martin ; Pravdová, Lenka ; Hucl, Václav ; Řeřucha, Šimon ; Hrabina, Jan ; Mikel, Břetislav ; Lazar, Josef ; Číp, Ondřej
Using long-haul optical fiber links for phase coherent transfers of stable optical frequencies has been developed by metrological laboratories for at least a decade. Present boom of optical fiber sensors puts a demand on transferring this technology from laboratories to industrial practice. A remote calibration of fiber Bragg grating tensometers can be an example. In our contribution we present a 306 km long fiber link between laboratories of ISI in Brno and CESNET in Prague. The line uses a telecom fiber with a dedicated DWDM window at 1540-1546 nm. The setup implements a phase coherent transfer of a laser standard working with 1540.5nm wavelength and a bi-directional transfer of 1PPS timestamps from radiofrequency standards at the both ends of the line. A long-term measurement of transport delay fluctuations and relative stability of the line are discussed.
|
|
The Catalogues of Records Companies of Early 20th Century
Gössel, Gabriel ; Šír, Filip
Grey literature often contains documents such as publisher or corporate catalogues. Included among these are catalogues of record companies, which provide evidence of all the sound documents issued for sale. Recordings are part of the collections of many institutions, but few of them also own these secondary information resources. Therefore, they are not able to contribute to the overall view of the cultural heritage of the era when the gramophone industry began and developed rapidly.
Fulltext: idr-1042_2 -  PDF; idr-1042_3 - PDF
Slides: idr-1042_1 - PDF
Video: idr-1042_4 -  MP4
|
|
Mechanochemical Preparation of Alumina-Ceria
Jirátová, Květa ; Spojakina, A. ; Tyuliev, G. ; Balabánová, Jana ; Kaluža, Luděk ; Palcheva, R.
Ceria containing catalysts play an essential role in heterogeneous catalytic processes. However, ceria shows poor thermal stability and low specific surface area and therefore, many studies have been done to improve its properties by combination with other oxides. Alumina-ceria is substantial component of the three ways catalysts, due to the ceria ability to function as the buffer of oxygen and to enhance the oxygen storage capacity of the catalysts. Ceria in these catalysts also functions as structural promoting component, increasing alumina stability towards thermal sintering. Promising method of oxides preparation, very interesting and simple but not sufficiently studied yet is a mechanochemical synthesis. Here we report on the synthesis of nano-sized alumina, ceria and ceria-alumina of various compositions by a wet solid phase mechanochemical reaction of hydrous aluminum, and/or cerium nitrate with ammonium bicarbonate after addition of a small amount of water. The aim of this contribution is to study processes being in progress during synthesis of the mixed oxides, interaction between components and their mutual effect on the properties of resulting products. The phase evolution during mechanical milling and the subsequent heat treatment of precursors were studied by X-ray diffraction, DTA/TG, H2-TPR, NH3-TPD, CO2-TPD, N2 adsorption at -195°C, IR, and XPS spectroscopy. Alumina and mixtures of alumina with different quantities of CeO2 (1- 18 wt. %) were synthesized by mechanochemical method from aluminum nitrate, cerium nitrate and ammonia bicarbonate.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22015083108560 - PDF
|
|
Intelligent Transport Systems in the Czech Republic and their use
MALÁSKOVÁ, Martina
Thesis on "Intelligent Transport Systems in the Czech Republic and their use" is focused on the analysis of intelligent transport systems, particularly for road transport in the Czech Republic. The aim of my work is to summarize the information and knowledge of ITS in the Czech Republic to introduce individual systems, their functions and to assess their contribution to road safety. Based on the evaluation of telematics systems used I suggest in the final part of the ITS elements in selected urban sprawl, particularly in the Czech Budejovice.
|
|
Monetary Policy and Macroprudential Policy: Rivals or Teammates?
Malovaná, Simona ; Frait, Jan
This paper sheds some light on situations in which monetary and macroprudential policies may interact (and potentially get into conflict) and contributes to the discussion about the coordination of those policies. Using data for the Czech Republic and five euro area countries we show that monetary tightening has a negative impact on the credit-to-GDP ratio and the non-risk-weighted bank capital ratio (i.e. a positive impact on bank leverage), while these effects have strengthened considerably since mid-2011. This supports the view that accommodative monetary policy contributes to a build-up of financial vulnerabilities, i.e. it boosts the credit cycle. On the other hand, the effect of the higher bank capital ratio is associated with some degree of uncertainty. For these and other reasons, coordination of the two policies is necessary to avoid an undesirable policy mix preventing effective achievement of the main objectives in the two policy areas.
Fulltext: PDF
|
|
Work in social integration process of adults with intellectual disability.
SVITÁKOVÁ, Iveta
In my bachelor thesis, I dealt with the use of work activities in the process of social integration of adults with mental disabilities, the aim was to create, implement and evaluate regular work activities intended to a specific group of adults with mental disability and focused primarily on the development of social integration. The thesis is structured into six chapters. The first of them is focused on the definition of mental disability, characteristic of adulthood as an important developmental period in human life, and on adulthood of individuals with mental disabilities with a goal to find and identify the specifics that were needed to be taken into account when working with this target group of people. The following section is devoted to the social integration, its determinants and the environment in which it operates. I continued with the outputs in the third chapter, where I focused on key competencies, which them are the necessary basis for social integration, especially social and personal skills and communication skills, necessary basis. Targeted professional development can be realized through educational activities, but has to respect the specificities of the participants and voluntary participation. Both of these assumptions can be fulfilled within the leisure education using adequate pedagogical methods. For this reason, I decided to focus my attention on these areas at the end of the chapter. The fourth chapter is devoted to work and work activities, namely the definition of concepts, their characteristics and importance and role of work activities in human life, or a person with mental disability. Based on all acquired theoretical knowledge and using previous experience with the target group in the fifth chapter, I designed a specific training program based on the work and activities focused on the development of selected key competences. The educational program volunteered four participants, but I have decided to follow the development of competencies of three participants because one participant attended the program very irregularly. The program has been implemented three times a week, two and a half hours for seven months (from October 2015 to May 2016) in the premises of the training centre Mo-zai-ka. At the beginning of the realisation of the created educational program, the participants agreed that we will adhere and develop good habits necessary for good relations within the group and the results of the work. On a basis of the individual characteristics of the participants, I prepared the work, which should also contribute to the development of social and personal and interpersonal skills. I have continuously monitored and recorded them. During the implementation of the program, I put emphasis on repetition, patient negotiations with participants and creating a friendly atmosphere. After completing the training program, I evaluated the development of competencies in three selected participants. On that basis, I concluded that the biggest change was in the communicative competence. I also experienced a change in social and personal competencies, however, results varied widely among individual participants. Yet, I believe that the goal of the thesis was achieved. These results show that education in leisure time, based on work activities may lead to the development of social and personal and interpersonal skills that are for adults with mental disabilities necessary in the process of social integration. This thesis can be an interesting source of inspiration for the realisation of similar programs aimed at social integration of persons with mental disabilities.
|
|
A historical view of the army nurse profession.
PAVLÍKOVÁ, Andrea
The thesis deals with the profession of a military nurse. We can assert that the official study of military, non-medical health-care related qualifications and its use in practice not only for military purposes dates back to the fifties of the last century. However, women as health care professionals, consequently in uniforms, have always been an actual issue. The development of health care activities always existed, however, we must not neglect influence of scientific and medical findings. The historical timeline of development of medical care in the battle field was recorded and ranges from pre-historical healing. The way of Christian medicine was negatively influenced by the Catholic Church. The dark period of the Middle Ages had actually wrested medical performance from the hands of specialists and the suffering were left to the "tender" mercies of the priests. The following part of the thesis concerns modern medicine where enlightenment reforms were exercised. Some of the original six-month courses for military surgeons were organised in this period of time; they weretransformed into Military Surgical Academy, out of which the famous Josefinum originated. A expression of humanity which supported a form of health care of war veterans was demonstrated by constructing buildings for invalid people. The second half of the nineteenth century is characterized by the phenomenon of the presence of nuns in military hospitals. This study goes further in depth of professionally organized healthcare right in the battle field, which dates back from the era of wars in the Crimea.This stage describes the transformation of caring into nursing which requires the necessity of specialized preparation of persons providing nursing practice. In addition, Henry Dunant engraved himself into the history of the profession of a nurse, as the founder of the Red Cross, who first trained health care professionals for working within armed intentions of the state. The continuation of this action sketches out the process of providing first aid in principal armed conflicts of the twentieth century. It describes the functioning of commander operated military health service of that time. WWI drove Czech medical staff to both sides of the front where they provided medical help to the injured. Nurses of the WWII already performed their duties in uniforms as the rightful members of the army. The thesis also mentions post-war usage of military health care professionals in secret foreign missions and their specialized erudition.Last but not least, it marginally discusses contemporary possibilities of modern health care service of the Army of the Czech Republic. The goal of the endeavours of writing this thesis was to chart out clearly the development of the profession of a military nurse within the historical context, focusing mainly on women coming from Czech regions. In order to make the history background concerning specific female participants of the world war conflicts understandable to the reader, this paper reports, in broader extension, peculiar medical and nursing findings, already from the era of prehistoric civilisations. The history study method were applied for the purpose of the theoretical thesis. The methodology is based on searching, studying, sorting and the consecutive systematic objective describing of the events from the past times with the intention to propose comprehensive report on the subject given. It was necessary to study inexhaustible amount of sources to obtain awareness of historical connections. Factual information was derived by analysing of primary and mainly secondary documents. The thesis sketches out histories of military health care and the profession of a military health care professional stemmed from the exploration of appropriate written sources and conclusion of the basic findings. The intentions of the work are not only to clarify the past but also to contribute to solutions of every-day issues.
|
|
Role of the nurse in screening for depression in the elderly.
VRZALOVÁ, Monika
The diploma thesis deals with problems of depression in older people. Mainly the work is focused on identifying and analyzing the role of nurses in screening for depression in older people in primary care, acute care, long-term care and home care. This thesis was focused on theoretical direction and was used the method of design and demonstration. In this thesis was set one main goals with five research questions. The main goal was to identify and analyze the role of nurses in screening for depression in the elderly. RQ 1: What is the role of the nurse in screening for depression in the elderly? RQ 2: What is the role of the nurse in the primary care in screening for depression in the elderly? RQ 3: What is the role of the nurse in screening for depression in hospitalized patients in acute care? RQ 4: What is the role of the nurse in screening for depression in seniors in long-term and home care? RQ 5: What rating scales and methods are used in screening for depression in the elderly? The thesis introduce the concept of depression. The following are specified the causes of and the important factors that affect depression in the elderly. It also deals the differences in the clinical symptomatology of depression in old age. It explains possibilities and various barriers in the diagnosis of depression. Another chapter introduces complete geriatric examination, diagnostic classification systems, possible screening methods and scales for detection of depression in the elderly population. It also deals methods of pharmacological and non-pharmacological treatment and its possible complications associated with older age. By reason of increased suicide rate caused by depressive disorder the issue of suicidal behavior in the elderly is introduced. The next chapter deals with the nursing process, which is used by nurses in practice. It consists of the evaluation of the patient's health condition, making nursing diagnosis, creating nursing plan and subsequent implementation and evaluation. The nursing process is also needy for providing quality care. The nursing process in the stage of nursing diagnosis, introduces possible nursing diagnosis for a patient suffering from depression, which are based on the latest classification. Finally is described the role of nurses in screening for depression in the elderly in different health facilities and their contribution to the timely evaluation of depression in the elderly. This chapter introduces the role of nurses, nursing screening and collaboration with a physician. The role of nurses in screening for depression in different medical facilities is based on the first phase of the nursing process of assessment. On the basis of objective and subjective information, the nurse will assess the overall health and mental condition of the patient. Primarily, it was investigated what is the role of the nurse in screening for depression. On the basis of content analysis and synthesis it was necessary to used and processed domestic and foreign literature. A number of relevant sources are the results of various studies and Meta-analyzes, mostly from abroad, but also from the Czech Republic. The thesis can serve as a basis for nurses. The result of this thesis is to create e-learning material available for students in the Faculty of Health and Social Sciences of South Bohemia in Ceske Budejovice in the tutorial called Moodle.
|
|
Coping strategies in children´s fear and pain in relation to nursing care
PROCHÁZKOVÁ, Zuzana
For the nurse, taking care of hospitalized children is important not only pediatric nursing knowledge, personal and social preconditions, but also the theoretical and practical competency of methods and techniques, which are used for identification and effective influencing of pain and fear. The aim of this thesis was to identify the main sources of fear of the hospitalized preschool and young school age children and to find out the effective methods and principles of the cooperation with children, alternatively with their accompanying parents in order to moderate the fear of the small patient. Then the thesis tried to chart the nursing diagnostic and evaluation procedure of the pain and get the most used nursing methods of non-pharmacological pain relief. To obtain the necessary data, the qualitative research was used with a semi-structured interview as a research instrument. The first research group consisted of 12 nurses, the second group consisted of 12 children ´s patients of preschool and young school age. The majority of the asked nurses thinks, that children´s patients are afraid especially of non-familiar environment, then of the awaited pain and of the solitude without parents. However, the most patients said, that they were afraid especially of pain, then of non-familiar environment, restriction of their needs, hostile attitude of the medical staff and of the other neighbouring patients. They were also frightened of the death and of the darkness. Most reported nurses mean, that the most effective solution of the children ´s fear is the friendly attitude of the medics. They also mentioned the fact of taking the focus off the fear and the presence of the parents is also beneficial. The nurses ´ answers were in conformity with patients opinion in two fields - friendly attitude of the medics and taking the focus off the fear. Then the children mentioned abiding of their specifics in connection to falling asleep and the demand of beying treated by the same sister or by few same sisters. All respondents also talked about the benefit of parents presence. Regarding the principles of the cooperation, nurses answered the importance of united medical procedures, especially the proper way of information transfer. Then the respondents nurses mentioned the psychical and emotional support for children and their accompaniments, the atmosphere of confidence and the value of well done education. Also the need of calm, silence and privacy was stated. Unlike nurses, children and their parents regarding to principles of the cooperation prefer the psychical and emotional support, then the importance of enough information was mentioned. The fourth research question bears on the methods used for children pain monitoring. The nurses said, that the intentional interview with the patients or with the parents was used as a main technique, that was stated by patients as well. Research question number five said: What are the most used nursing methods of non-pharmacological pain relief at children? Most responded nurses mentioned the distraction of children attention from the painful incentive, then the importance of physical methods, relief position and purposeful preparation for the unpleasant intervention. Nurses also named the helpful contribution of the parents, relaxing exercises and the method of imagination. Regarding the pain treatment, it was noted, that all patients prefered the analgesic therapy. Then they quoted the distraction of their attention from the painful incentive, the friendly attitude of the medics, using the ice compress and the relief position. In the pain acute phase, children required mostly calm, comfort and privacy. All children also considered the presence of parents as very helpful. The theoretical and empirical part of the thesis are suitable for being studied by nurses taking care of children and it can be helpful for nursing quality improvement at children ´s wards in hospitals.
|
guest ::
