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Evaluation of observed parameters of a beef herd.
CIMBURKOVÁ, Pavla
It has been observed beef breed herd of Aberdeen Angus cattle in the foothills area of Novohradské mountains in 1992 - 2007. The base of herd was consisted of 117 dams and 814 pieces of calves in total. The parameters of beef production of calves and the reproduction of dams were monitored. For the parameters of growth of calves were found significant effects of the year, the month of birth, sex, the order of calving, the method of reproduction and the sire.
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The status of women on the labour market in Czech Republic
Skopalíková, Anna ; Chytil, Zdeněk (advisor) ; Čermáková, Klára (referee)
The bachelor thesis addresses discrimination of women on the labour market in Czech Republic. Its aim is to verify hypothesises about the existence of lower mean wages of women and about the existence of discrimination of women on the labour market in Czech Republic. Oaxaca wage differential decomposition which is introduced in the theoretical part of the thesis confirmed the existence of wage differentials between the wages of men and women on the Czech labour market, in selected regions and in selected occupational fields. This confirms the hypothesis about lower mean wages of women. Oaxaca wage differentials decomposition also confirms that the wage gap can be explained in most cases up to 18 %. The second hypothesis is confirmed only partially. The discrimination of women probably exists on the labour market but it is not possible to confirm the size of it. The unexplained component of the wage gap (based on the Oaxaca decomposition) includes besides other things the discrimination coefficient. The size of this coefficient is not possible to determine. The secondary aim of the bachelor thesis is to determine the impact of individual variables on the observed wage gaps. Factors which most often influence the wage gaps are education and age.
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Clustering and regression analysis of micro panel data
Sobíšek, Lukáš ; Pecáková, Iva (advisor) ; Komárek, Arnošt (referee) ; Brabec, Marek (referee)
The main purpose of panel studies is to analyze changes in values of studied variables over time. In micro panel research, a large number of elements are periodically observed within the relatively short time period of just a few years. Moreover, the number of repeated measurements is small. This dissertation deals with contemporary approaches to the regression and the clustering analysis of micro panel data. One of the approaches to the micro panel analysis is to use multivariate statistical models originally designed for crosssectional data and modify them in order to take into account the within-subject correlation. The thesis summarizes available tools for the regression analysis of micro panel data. The known and currently used linear mixed effects models for a normally distributed dependent variable are recapitulated. Besides that, new approaches for analysis of a response variable with other than normal distribution are presented. These approaches include the generalized marginal linear model, the generalized linear mixed effects model and the Bayesian modelling approach. In addition to describing the aforementioned models, the paper also includes a brief overview of their implementation in the R software. The difficulty with the regression models adjusted for micro panel data is the ambiguity of their parameters estimation. This thesis proposes a way to improve the estimations through the cluster analysis. For this reason, the thesis also contains a description of methods of the cluster analysis of micro panel data. Because supply of the methods is limited, the main goal of this paper is to devise its own two-step approach for clustering micro panel data. In the first step, the panel data are transformed into a static form using a set of proposed characteristics of dynamics. These characteristics represent different features of time course of the observed variables. In the second step, the elements are clustered by conventional spatial clustering techniques (agglomerative clustering and the C-means partitioning). The clustering is based on a dissimilarity matrix of the values of clustering variables calculated in the first step. Another goal of this paper is to find out whether the suggested procedure leads to an improvement in quality of the regression models for this type of data. By means of a simulation study, the procedure drafted herein is compared to the procedure applied in the kml package of the R software, as well as to the clustering characteristics proposed by Urso (2004). The simulation study demonstrated better results of the proposed combination of clustering variables as compared to the other combinations currently used. A corresponding script written in the R-language represents another benefit of this paper. It is available on the attached CD and it can be used for analyses of readers own micro panel data.
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Forms of advertising on social networks and consumer protection
Žďárský, Jiří ; Vavrečka, Jan (advisor) ; Štěpánek, Petr (referee)
The theme of this thesis are forms of advertising on social networks and consumer protection. The main informational source is above all research of specialized literature, articles, online or other sources in connection with author's own observations and analysis of the respective legislation and ultimately the comparison with author's gained professional experience. The result of this work is a comprehensive overview and introduction to the law of social networks and advertising, demonstration of the importance and significance of this topic and finally evaluation of the effectiveness of legislation that protects consumers in the environment of social networks.
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Interpersonal relationship development between children's nurse and mother in the neonatology department by means of the H. E. Peplau model
AMBROŽOVÁ, Helena
The dissertation objective on the theme {\clqq}Interpersonal relationship development between children's nurse and mother in the neonatology department by means of the H. E. Peplau model`` is to chart individual phases utilization in the process, professional relationship development between children´s nurse and mother according to the H. E. Peplau model. Further through created documentation to find out differences at the approaches during professional relationship connecting between children´s nurse and mother in the neonatology department in the Hospital JSC in České Budějovice. To meet these objectives the dissertation is divided into theoretical part which focuses on differences at the care of developed and underdeveloped infant, nursing model H. Peplau including its application into practice. The second, practical part is divided into quantitative and qualitative parts. The quantitative part concentrates on factors finding out which influence professional relationship between children´s nurse and mother in compliance with the H. E. Peplau model and concurrently specifies individual nurse roles changing during professional relationship children´s nurse and mother. The data of the quantitative research part have been learned by means of questionnaire disquisition. By the dissertation results summarizing I found out facts regarding H. E. Peplau model individual phases utilization at the children nurse {--} mother relationship establishing in neonatology. Hypothesis 1 {\clqq}Children nurses with own children establish faster the professional relationship with mother`` {--} has come true. Hypothesis 2 {\clqq}Children nurse practice length influences the ability to establish the professional relationship with mother`` {--} has come true. Hypothesis 3 {\clqq}Children nurses undertake the role of the mentor in most cases`` {--} hasn´t come true. The data of the qualitative research part were identified by observation, conversation with children nurse, creating of the documentation own proposal at the mothers of prematured children hospitalized by ROOM IN system and its application in practice. Mothers were divided into two groups, the common way of the interpersonal relationship establishing with mother was used in the first group, the way of the interpersonal relationship establishing with mother according to the H. E. Peplau model was applied in the second one. At the quasiexperiment it has been identified the interpersonal relationship establishing with mother proceeds better at the nursing H. E. Peplau model utilisation. The dissertation knowledge can be partly utilised by neonatology department of the Hospital JSC in České Budějovice, in particular by children nurses to master the abilities for professional relationship establishing with mother and to provide subsequently mother and child with the complex nursing care. Further to students and other interested people in this issue.
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Characterization of FRET sensor
Datinská, Vladimíra ; Klepárník, Karel ; Belšánová, B. ; Minárik, M. ; Foret, František
In this study, we present characterization of sensor based on Fӧrster resonance energy\ntransfer (FRET). The sensor is composed of ssDNA chain attached to a laboratory\nsynthesized quantum dot (QD). A complementary chain of a sample is labeled by a\nluminescent dye. When the dsDNA hybrid is formed, the energy from the QD (donor)\nis transferred to the dye (acceptor) and FRET is observed as a decrease of QD\nluminescence emission intensity and an increase of dye luminescence emission\nintensity.
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Awareness of women about nutrition problems such as breast cancer prevention
STAŇKOVÁ, Denisa
This thesis focuses on the awareness of women of the nutrition issue as the prevention of breast cancer. The aim of this thesis is to find out whether the women have enough information about nutrition and life style as the prevention of breast carcinoma, where they look for information, if they are interested in this issue and whether they consume food that could work as the prevention. Another goal is to detect possible differences in the attitude to the prevention between women without the potential risk and women with the increased risk, i.e. women over 45. Research questions were determined as follows: "What is the knowledge of women about the issues of nutrition as the prevention of breast cancer?", "What is the proportion of the food that has preventive effect on the rise of breast carcinoma and, on the contrary, the food that supports the tumour growth in the eating habits of women?", "Where do women get information on this issue?", "What is the difference in awareness and consumption of food between women without the potential risk and women with the increased risk, i.e. over 45. The thesis is divided into two parts, a theoretical and a practical one. In the theoretical part I focus on the breast anatomy, basic information on breast cancer and risk factors that are divided into influenceble ones and non-influenceble ones. In the most extensive part of my thesis focuses on the influenceble factors, that is nutrition and life style. I focus especially on nutriments, food and other life style factors that are most connected with breast cancer and have antitumour effects or, conversely, support the tumour growth. The practical part was made by means of a questionnaire which I placed on the Internet and handed out in the waiting room at the general practitioner. The questionnaire was anonymous with 34 questions of a closed and semi-enclosed type. Questions concerned nutrition and life style in relation to the risk of breast cancer and were devised to answer previously defined research questions. The questionnaire survey took place in January and February 2013. I acquired 105 filled in questionnaires from which I randomly chose 86 to obtain two numerously equal groups of women without the potential risk and with the increased risk, i.e. over 45. The result of the research part is that women do not have much information on the life style in connection with the breast cancer. Some respondents, while selecting food with preventive effect, were only guessing and often also marked food which was not related to the breast carcinoma at all. About one third of the respondents even believe that nutrition and other factors are not related to this disease at all. One third of the respondents also stated that they had no interest in learning more information on this issue. Women that have some information usually get it from the magazines and from the Internet. In terms of eating habits, the food of most respondents does not reach the needed quantity to have preventive effects. On the other hand, the food and drinks that support tumour growth do not occur on the menu of the respondents very often. While comparing answers of the women younger 45 and the older group of respondents, it was found out that the younger respondents showed greater unawareness of this issue. No significant differences were recorded in other questions. The results of the survey are graphically processed and evaluated in the final part of this thesis. I suppose this thesis is the contribution to clarifying the current situation of this issue. I believe that the topic of my thesis is up-to-date and that I managed to summarize the most significant information regarding this topic and fulfil the aims I set down. I would be very glad if my work led to the contemplation of this issue and subsequently to a more extensive propagation of the breast cancer prevention.
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Folk culture in memories of people born in 20s and 30s of 20th century
Horová, Kateřina ; STAVĚLOVÁ, Daniela (advisor) ; FRIČOVÁ, Marie (referee)
This thesis is focused on memories of people born in 20s and 30s of 20th century about traditional folk culture. It is focused on observing original traditions and celebrating traditional festivities and what sense had these traditions for them and how they ment it. First part of this thesis is focused on narratives life stories. Second part is about memories of traditional customs and habits and how was changing their way of celebrating during prewar period, war and in time of socialism. Last part is dedicated to dancing. Storytellers spoke about dancing opportunities, their own dance experience and dance perofrmances in the theatre.
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Sorption and Stabilization of Metals/Mettalloids by Innovative Synthesized Sorbent Amochar.
Ouředníček, P. ; Trakal, L. ; Komárek, M. ; Pohořelý, Michael
Remediation of contaminated soil which is based on stabilization and immobilization of potential\nhazardous substance by sorption materials has been studied intensively nowadays. Biochar – activated organic carbon belongs to this group of stabilizing agents which can adsorb wide range of contaminants, including metals/metalloids. Surface area of the biochars is quite large in general and functional groups (e.g. COO–) can form chelates or alkaline elements on the surface, which is represented by cation exchange capacity. Altogether with the high pH values (7.00 – 10.00), biochars are quite effective sorbents and can adsorb metals/metalloids from the solution (ground water), especially in acidic soils (in the environments affected by intensive mining activities). Sorption\neffectiveness can be increased (especially for As (V) or Cr (VI) sorption) by modification of biochar by various types of secondary oxides. Innovative sorbent AMOchar (AMO + biochar) has been synthesized currently. The product was prepared by adding of biochar to the reaction solution during amorphous manganese oxide (AMO) synthesis. The AMOchar was formed mainly by Mn-oxalates which had coated surface of the pristine biochar. AMOchar composite was able to remove significantly higher amounts of various metal(loid)s from the solution despite the rather high pH of the material. Sorption effectiveness was high not only in case of Pb (II) sorption (almost 99%), and Cd(II) (51.2%), but also a very high amount of As(V), 91.4%. Additionally, both AMOchar composite was able to reduce Mn leaching. This can avoid potential post-contamination caused by the dissolution of less stable Mn-oxalates as observed in the pure AMO.
Fulltext: content.csg -  PDF
Plný tet: SKMBT_22316111113040 - PDF
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Arctic tundra dendrochronology
Lehejček, Jiří ; Svoboda, Miroslav (advisor) ; Monika, Monika (referee)
Historically unprecedented environmental change in the Arctic ecosystems is often given into the context of its past and possible future development. In the region where instrumental meteorological observations are scarce archives need to be investigated in order to address this issues. The comprehensive synthesis one of the archives: long-live circumpolar evergreen Juniperus communis L. shrub is presented here. 20 individuals from southwest Greenland were investigated at the cell anatomy level to understand the ecology of the species and unhide its potential for environmental and climate reconstructions. The findings are as follows:
i) Stop of exponential cross-sectional conduit-lumen widening with increasing age is in contrast with conduit-lumen nature of trees. This indicates that shrubs do not need to saturate their water and nutrient demands via traits of classical hydraulic conductivity law but rather developed different mechanisms. Extreme weather conditions result in prostrate growth form. However, different weather factors probably influence shrub growth differently: While snow and wind act mechanically (a), temperature influences the form of growth physiologically (b). a) So long as the young shrub stem has high resilience to bend back to an upright position after snow melt and so long as it can withstand the wind during the vegetation season it most likely grows upright and the conduit-lumens widen. b) Temperature, resp. freeze-thaw events are responsible for the shrubs preference of safety (finite size of conduit-lumens) over hydraulic efficiency, thus not allowing for more primary growth. All of these (and other) factors are apparently working together and the transition of vertical to more horizontal growth is gradual. As a consequence, the conduit-lumen sizes may not have to be further increased (due to ecophysiological restrictions possibly also must not) because water is no longer transported against gravity.
ii) Observed age/growth trend has to be taken into consideration for further employment of the wood anatomical parameter in paleoenvironmental studies. That is, shrub cell parameters can only be used for this purposes if correctly detrended. This allows for more accurate as well as longer reconstructions because youth trend was often neglected in reconstructions based on shrub annual-rings.
iii) The south-western Greenland Ice-Sheet (GrIS) melt rates reconstruction is presented for the whole 20th century. This part of GrIS is considered as the most active. According to the presented reconstruction current GrIS melt rates are not uncommon for the last century being comparable to first decades of 20th century. This finding is particularly important contribution to the debate on Atlantic meridional overturning circulation (AMOC). Too high fresh water inputs into the Northern Atlantic from GrIS melting may slow down or even stop the AMOC which would result in more continental climate in Europe. Presented results indicate that this threshold lies higher than observed current melt rates of GrIS.
Fascinating Juniperus comunnis species has shown to be able to address many ecological as well as environmental open questions and due to its longevity and abundant distribution has a great potential to become an important player in the Arctic research.
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