National Repository of Grey Literature 10,745 records found  beginprevious10730 - 10739next  jump to record: Search took 0.80 seconds. 

Influence of Selected Factors on Students' Mathematical Literacy in Central European Countries : Secondary Analysis of PISA 2003 Data
Voňková, Hana ; Byčkovský, Petr (advisor) ; Půlpán, Zdeněk (referee) ; Boschek, Petr (referee)
In this work we investigate the impact of selected personal, family and school characteristics on the level of mathematical ability of fifteen year old pupils from 6 countries of the Central Europe (Czech Republic, Hungary, Germany, Poland, Austria and Slovakia) and from countries with excellent results in mathematics (Finland, Hong Kong and the Netherlands). Then we compare the impact of the factors in the individual countries. Much can be concluded from this analysis. The type of school attended by the pupil has a great impact. The maximal difference between type of schools can come up to 40 percentage points in some countries (CR, Hungary, Poland and Slovakia). We do not discuss this factor in Finland and Poland, where all fifteen year olds attend one type of school. The results in these countries are therefore determined differently. As for other basic characteristics of the school, the size matters in some countries (Hong Kong and the Netherlands) and has always a positive effect. The urbanization level of the place of the school (the size of the village or city) is also positively correlated with the mathematics result. Here the Netherlands and Germany form an exception. The status of the school (public vs. private), lack of well-educated teachers, equipment of the school and enthousiasm of the...

Locating Landmarks Using Templates
Kalina, Jan
This thesis is devoted to automatic location of landmarks (month and eyes) in images of faces using templates. There is an unsatisfactory experience with existing software because of its high sensitivity to small rotations of the face. The weighted correlation coefficient as a similarity measure between the template and the image turns out toout- perform the classical correlation. It is presented how to choose the weights to increase the discrimination of the parts of the face which correspond to the template from those which do not. Optimization without constraints tends to degenerate and to obtain a ro- bust version we bound the influence of single pixels. In a similar way the template can be optimized to improve the discrimination further. The results arc? compared for different initial choices of weights and their robustness to different size or rotation of the face is examined. The method docs not use any special properties of faces and can be classified as a robust nonparametric disrimination technique. Abstrakt Pra.ce HC zabyva, automatickym liledam'm objcktn (list a oci) v obrazech oblicejri za po- rnoci sabloii. Dostupny software je velmi citlivy k malym otocenim oblieje a zkusenost s mm je neuspokojiva. Vaznny korelarm koefieieiit je vhodnejsi mi'ron podobnosti mezi sablonou a obrazem nez...

Learning style in the process of cognitive and metacognitive learning
Volf, Petr ; Vališová, Alena (referee) ; Krykorková, Hana (advisor)
The text of the thesis is focused on the theme of learning style and its position in the process of cognitive and metacognitive learning. The thesis contains theoretical concepts from given sphere and empirical research of the influence of approach to learning on the successful command of task of metacognitive training. In the introductory theoretical part, there are defined the terms of cognitive learning, perspective on problems from the point of view of different psychological schools; it also defies motivational sphere and performance predispositions as intervene variable. There are mentioned concrete systems of receiving and decoding information and their affect on the theory of learning style as a metacognitive factor. Pedagogical context deals with theories of education, which create the ground for practical use of knowledge, gained from empirical research. The second part of thesis contains the research, which surveys the correlation of successful processing of metacognitive interventions and preferred learning style. The research pointed out the potential possibility of changing the approach to learning by increasing the level of metacognitive skills and using the higher levels of thinking. It was also uncovered, that everybody is potentially able to enlarge the metacognitive skills, no matter what...

Properties of InAs/GaAs quantum dots in vertically correlated structures with 2 QD layers grown by MOVPE
Vyskočil, Jan ; Hospodková, Alice ; Pangrác, Jiří ; Oswald, Jiří ; Mates, Tomáš ; Melichar, Karel ; Šimeček, Tomislav ; Hulicius, Eduard
We have studied the shape of QDs in structures with vertically correlated QDs where two layers of QDs were grown. We investigated the influence of spacer thickness on lateral shape (elongation) of QDs and photoluminescence intensity.

The Assessment of the stock market effectiveness and choosing the appropriate investment strategy
MEDKOVÁ, Petra
This thesis is dedicated to the stock markets issue. Its main aim was to assess the effectiveness of the stock market and choose an appropriate investment strategy. To this purpose, the 5 industries of U.S. stock market were chosen, which served as a data base for all applied methods. The thesis presents the results of correlation and runs tests verifying the weak form of market efficiency, the results of fundamental analysis and of active strategies simulation as well. The final part is focused on creating of investment portfolio, which was chosen as the most appropriate investment strategy of the refenrence data set.

BMI (body mass index) patient, factors influencing the radiation protection of staff in radiology
MICHEL, Tomáš
Bachelor thesis deals with personnel radiation exposure in interventional procedures in patients with different BMI. Therefore we have decided to clarify the hypothesis to what extent the impact of BMI on patient radiation exposure of personnel. The thesis is divided into 2 parts: In the theoretical part of the thesis deals with the hitherto known in the field of radiation protection in workplaces with ionizing radiation. The information obtained from the State Office for Nuclear Safety and National Radiation Protection Institute we detail the current methods of protection against ionizing radiation, radiation protection, which is based on three basic principles defined by international institutions and the legal system in all developed countries: 1. The justification of exposure 2. Optimization of protection 3. Establishment of exposure In the second part of the thesis devoted to a particular hypothesis of proof. Hypothesis is that the BMI of the patient greatly affects the radiation exposure of personnel for interventional procedures. Statistical analysis the thesis consists of two parts. The first part is a set of patients after PTA pelvic arteries and the second part is a set of patients after biliary drainage. To calculate the statistical dependence, we chose a simple linear correlation (Pearson r), resulting will be a regression line. The base set includes about 100 patients, after examining and identifying the data needed to calculate the radiation dependence, we had about half of the patients discarded for the following reasons: - We were unable to verify information in the database RO. - We were unable to verify the values for BMI. - Patients who were treated in 2006, we scrapped because they were treated to another type of angiographic device that worked in very different dose rates. - PTA in pelvic arteries undergoing different type of exercise intervention, for example: diagnosis of aortic arch, carotid arteries and examination of the lower extremities. The most serious limits of the study, however, include the use of different protective shield in each case, which brings to the measurements and calculations greatest uncertainty. It shows especially when comparing sets DZC sets and PTA, in terms of the relationship BMI and dose of physician. The DZC is used for practical reasons, only a limited, would have bothered himself transferred power. The PTA is quite the contrary, investigating may preferably between himself and the radiation field to insert shield in the form of protective Plexiglas absorbance, which is part of angiographic complete. Above all this, we explain why statistical significance BMI and dose of physician for DZC is traceable, while at the PTA it is not. From a statistical perspective, the relationship of BMI and dose impacting on patient at DZC relatively very tight at the PTA was a little less tight. This fact can be explained by the fact that the measurement data is not affected so many uncertain variables such as dose measurements in the apron. The correction of different difficulty of performance was used dividing the total fluoroscopic doses with a total time of fluoroscopy. The expression of experts on radiation protection initially resulted transferred to study with skepticism. Surprise, but was relatively strong statistical dependence in relation BMI and dose of both entities in DZC. In terms of number of patients and the homogeneity of each group is more of a pilot study. Group of patients with DZC need of the above reasons, considered more representative than the group of patients with PTA. From the findings we can confirm the existence of a correlation between the dose and the patient's constitution and staff performing interventional radiology procedures. These established facts may be relevant to the protection of personnel and should be taken into account in the design of radiological measures.

Phasal Periphrases in Portuguese
Jindrová, Jaroslava ; Zavadil, Bohumil (advisor) ; Černý, Jiří (referee) ; Svobodová, Iva (referee)
This dissertation aims to provide a survey of periphrastic aspectual constructions in contemporary European Portuguese. The research was initially conducted on periphrastic constructions in the two main Portuguese corpuses, the CETEMPúblico and the Corpus do Portugus, and was then followed by a semantic analysis. The main problem, according to the author, consists in the fundamentally different conceptions of aspect and the nature of verbal action in Czech and Portuguese. Given that the grammatical category of aspect has different contents in Czech and Portuguese, it is preferable to use the term aspectuality as a three-layer system of interacting categories of aspect, telicity, and the nature of verbal action. If the traditional Slavic aspect is to be expressed in Portuguese by other means at various levels of construction, Czech lacks a way to render the variety of meanings of Portuguese periphrastic constructions that represent the different categories of the nature of verbal action (Aktionsart). In the dissertation, aspectuality in Portuguese is considered a system of mutually correlated categories - aspect, the nature of verbal action, and the lexical semantics of the verb. In Portuguese, the category of the nature of verbal action employs specific means that can be separated from morphological means...

Status of soil organic carbon content of selected reclaimed sites in the Podkrušnohorská dump.
KOBESOVÁ, Martina
The main aim of this thesis was to assess the status of soil organic carbon in newly shaped soils called Velká podkrušnohorská dump in the Sokolov district and evaluate the information in relation to the physic-chemical properties of soils. Another objective was to determine the relationship between the stable and labile fractions of soil organic carbon. The amount of soil carbon (stable fraction) was measured in the solid soil samples and there was the analysis of basic physic-chemical parameters of the soil performed. The highest concentration of soil carbon was measured in the stand alders and larch. The amount of soil carbon (labile fraction) was measured in the water extract. The highest values were measured in the stand silver birch and alders. Based on this data the quotient of the labile fraction from the stable fraction was determined and the correlation of the labile and stable fractions was made. It was found out that the higher quality soils are located at the leafy trees, but it leads to leaching of organic carbon. The bulk density and coarse-grained soil fraction was determined from the physical properties and these data were used to calculate the stock of soil organic carbon. The highest value was measured in deciduous forests with small-leaved linden, in coniferous forests with larch. The stocks of soil organic carbon were converted into codes by land cover categories and the thematic map was created. It was found out that the leafy trees are much more appropriate for forest restoration, because they are characterized by the rapid initial growth, easily degradable plant litter and stable form humus. Deciduous forests are also characterized by more developed soil substrate, which is however unstable.

Nursing care of women after abortion performed for a genetic indication in II. trimester
FAJMANOVÁ, Dita
The finding congenital defect or chromosomal aberration by child puts a woman to big medical, ethical but also social problem, when she is forced to decide, if she should interrupt the pregnancy or to continue. By searching for abnormalities and pathologies in pregnancy is held by prenatal diagnostics. This involves cooperation of many medical fields such as obstetrics, ultrasonography, specialized laboratory and clinical genetics. The task of prenatal diagnostics is to reveal abnormalities in development of the child and to be able to interrupt the pregnancy, give information about following approach, to give possibility of choice, decrease fear and worries, and be able to cure the child in prenatal stage. Interruption is an action by which another development of the child is terminated. It brings many complicated situations, in which it is necessary to deal with them individually and in correlation with legislation. According to law it is possible to interrupt pregnancy after 12th week only in that case, when a life of the woman is threaten, or serious damage of child is proven or the child is not able to survive. If there are some genetic reasons for interruption, it is possible to interrupt pregnancy till 24th week and furthermore this possibility is valid when risk of damage of the child is more than 10% based on genetic examination. For interruption in second trimester it is necessary to choose sufficient method of interruption and provide a woman traumatic treatment to minimize the trauma. In this case the assistance of birth assistant is essential.This bachelor thesis is focused on problematic of interruption of pregnancy in second trimester based on genetic indication from decision of a woman if continue or interrupt the pregnancy all the way to nursery care during hospitalization. The aim of the thesis is to find out the factors, which influenced women in making their decision about interruption of pregnancy in second trimester a to find out their satisfaction with nursery care and attitude of birth assistants during hospitalization.In theoretical part the findings obtained from bibliographic sources were generalized. In practical part was done research for which was used qualitative method in form of questioning. For data collection technique was chosen structured interview. Interviews were done in department of conservative gynecology of Gynecological- obstetric clinic of Faculty Hospital in Pilsen in January, February and March of 2013. The focus group were five women, which were hospitalized here in that time with diagnosis of interruption in second trimester based on genetic indication. Obtained data were then categorized and for its interpretation some respondents´ citation were used.With research was found, that the decision making about interruption is influenced mainly by results of prenatal examination, standpoint of the partner and family and also suggestion of gynecologist. The decision is indirectly influenced by moral principles and conscience and also personal experience with damaged child. Satisfaction with nursery care and approach of birth assistants was expressed by all questioned women. They had some comments regarding organizational possibilities of medical facility. Two out of five respondents expressed need of more privacy, to be alone in the room. In their case it was impossible due to occupied single rooms. For three respondents it was unpleasant to go through interruption in delivery room. The research also revealed lack in satisfaction of psychical needs of respondents. The possibility of intervention with psychologist was offered only to two of them and all questioned women would appreciate intervention with psychologist already during decision making process.

Disseminated Intravascular Coagulation Syndrome in Critical Care
Kasperová, Jana ; Krška, Zdeněk (referee) ; Kvasnička, Jan (advisor)
We have conducted a retrospective study on disseminated intravascular coagulation syndrome (DIC) in critical care. The theoretical part of the study focusses on the epidemiology, pathogenesis, ethiology, clinical features, laboratory diagnosis, differential diagnosis, and medical complications of the disseminated intravascular coagulation syndrome, and describes the major therapeutic approaches. The aim of this study is to determine the etiology and outcome of the treatment of 29 patients hospitalized because of a DIC diagnosis in General University Hospital in Prague between January 2006 and December 2009, to analyse the changes of the laboratory test values over time, to see if there is any correlation between the chosen variables, and to assess confidence in the diagnosis of DIC according to the ISTH criteria for the diagnosis of DIC. The hypotheses that there will not be a significant difference between the gender, age and the laboratory values of DIC patients, that the mortality of septic patients with DIC will be a minimum of 50 %, and that the correlation between age, gender and the laboratory values in DIC patients will not be significant, were confirmed. On the contrary, the hypothese that the platelet count of all the DIC patients will be smaller or equal to 100 x 109 /l, prothrombin time (INR)...