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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
101

Bezdětnost a její aspekty ve vybraných zemích Evropy / Childlessness and its aspects in selected European countries

Žemberová, Karolína January 2014 (has links)
This thesis addresses childlessness and its aspects in selected European countries: Czech Republic, Slovakia, Hungary, Bulgaria, Estonia, the Netherlands, Sweden and Norway. The aim of this work is to discover whether there are differences between capitalist and post-socialist countries when it comes to the development of childlessness and fertility. The tools are: the analysis of fertility, the average age of mothers at childbirth and analysis of childlessness using both transversal and longitudinal indicators. The indicators used in the analysis were of the first and second category. Another aim of this thesis is to find out whether there are differences between the attitudes, opinions and values when it comes to approach to the family, the division of gender roles and children between childless respondents and respondents with children. The differentiation between sex and age groups through the use of three matrices with questions from three surveys (European Values Study, Eurobarometer and ISSP) are also investigated. The factor analysis and the method of principal components are used to reduce the number of variables. The results of the factor analysis are indexed and the indexes are then used to reveal how the differences manifest themselves in the monitored groups of respondents. The main result of...
102

Rodinná politika a reprodukční chování v zemích Visegrádské čtyřky po roce 1990 / Family policy and reproductive behaviour in the Visegrad Group states after 1990

Krejčí, Anna January 2016 (has links)
Family policy andreproductive behaviour in the VisegradGroup states after 1990 Abstract In post-communist countries, the fertility decline has been already subjected in many researches. Aim of this diploma thesis is to analyse trends in fertility and family policy in the Visegrad countries. The goal was to find out how the post-1990 approach on family policy and response to changing social conditions differed in the Czech Republic, Hungary, Poland and Slovakia. The study describes settings for each family benefits including the changes in the examined period of 1990-2013. On that basis 5-year periods were defined and assessed. The fertility analysis is focused on the total and completed fertility rate and also by parity and age-specific fertility rates. The period effect was estimated using age-period-cohort (APC) models which decompose fertility rates for age, period and cohort effects. Models were based on fertility of women aged 25-49 years in the Czech Republic, Hungary and Slovakia. Results in all three countries suggest that the decline in fertility in 1995-1999 wasa reaction to the changing socio-economic conditions in 1990-1994. However, the negative effect of this period was mitigated by changes in the distribution of cohorts. The period 2000-2004 has brought many positive changes that were behind...
103

Differentiation and Dynamics of Fertility in Kazakhstan during the Period of Rapid Economic Growth

Meldeshova, Aigerim January 2010 (has links)
The main purpose of presented research was to identify changes in levels and patterns of fertility during the period of rapid economic growth in Kazakhstan (1999-2008). Particular attention was devoted to differentiation of fertility according to the type of settlement (urban/rural) and ethnicity. These leading attributes were completed by birth parity which helped to examine and explain the nature of some principal differences in reproductive behaviour among women living in rural and urban areas as well as belonging to selected major ethnic groups of Kazakhstan. Presented results clearly demonstrate principal increase of the overall intensity of fertility, partially due to mass realization of the births postponed during the 1990s. Their realization not only contributed to reproductive process intensification but also principally influenced different fertility patterns. The initial age structure of fertility faced both-sided ageing, differences among ethnoses and both types of settlement in many respects deepened. Situation observed in the year 2008 or in some cases in the year 2006 was labeled as transitional since many structural changes have not finished yet and some of them have only just started. It is suggested that particular identified trends could also represent a part of global changes in...
104

Vliv diabetes mellitus na reprodukční parametry a expresi vybraných testikulárních genů na myším modelu / The effect of diabetes mellitus on reproductive parameters and expression of selected testicular genes in diabetic mice

Valášková, Eliška January 2016 (has links)
According to the World Health Organization (WHO), 15% of couples in reproductive age suffer from infertility problems, and up to 60% of cases are caused by male factor. Causes of this condition could be genetic background, environmental factors and various diseases, including diabetes mellitus (DM). The aim of this study was to investigate the effects of DM on reproductive parameters and expression of selected testicular genes using mouse model (FVB inbred mouse strain). DM (type 1) was artificially induced by chemical substance streptozotocin, which causes destruction of pancreatic β cells. These mice were exposed to diabetic condition for 6 weeks and then subjected to analysis. Our results have shown that diabetic condition had an impact on body weight, weight of reproductive organs as well as kidneys and livers. We also observed decreased concentration and viability of diabetic sperm compared to control. Moreover, we noticed increased staining with apoptotic marker annexin V. Further, we evaluated changes of sperm nuclear proteins - protamines. In diabetic animals, we observed higher number of sperm with insufficient protamination. Nevertheless, protamine 1 to protamine 2 ratio (P1/P2), a marker of male fertility, was not altered in sperm of diabetic animals compared to control. Regarding the...
105

Pozdní mateřství z demografického pohledu (na příkladu České a Slovenské republiky) / Late matherhood from demographic point of view (example of The Czech and Slovak Republic)

Vobořilová, Michaela January 2012 (has links)
Late Motherhood from Demographic Point of View (Example of the Czech and Slovak Republic) Abstract The thesis thematically refers the issue of late motherhood in the Czech and Slovak Republics from the twenties of the twentieth century to the present from a demographic point of view. It describes the changes that have occurred during the observed years as to fertility of women aged over 35, using selected demographic indicators. In the second part the focus lies on the analysis of selected demographic factors using binary logistic regression. In the very end, the form of late motherhood is discussed. According to the results of the analysis are determined three different types of late motherhood. Keywords: late motherhood, late maternity, fertility, Czech Republic, Slovak Republic, logistic regression
106

Porovnání reprodukce koz na ekologické a konvenční farmě / Comparison of the reproduction of the goats on the ecological and the conventional farm

PRAVDOVÁ, Lenka January 2011 (has links)
The aim of my diploma thesis is comparison and evaluation of reproduction of goats on an eco-farm and on a conventional farm. Measures of reproduction of observed herds were assessed in the years of 2009 and 2010 on an eco-farm Hana Langová and on a conventional farm Bára Schneedorferová. On an eco-farm, a herd of 20 does was observed. Crossbreeds of White shorthaired goat, Brown shorthair goat, Boer goat and Anglo-Nubian goat; all bred with a White shorthaired buck and a Boer buck. On a conventional farm, a herd of 24 White shorthaired does and two crossbred does of White and Brown shorthaired goat was observed in 2009. In 2010, only 18 does were observed. In both years the does were bred with two Brown shorthair bucks. The measured results were compared with milk efficiency results between the two years and also between the farms. In both years, higher fertility was discovered on an eco-farm. On a conventional farm, very low fertility was observed in 2009 (116 %). On the other hand, fertilization was higher than on an eco-farm in both years. Very big difference was also observed in the ratio of male kids, which was in both years higher on a conventional farm, where all the bred animals (apart from one) are hornless. Reproduction is to a high extent influenced by external environmental factors and to a very small extent by genetics. A whole range of possible effects was omitted from the observations, however, the main ones were noted. Of all the observed measures of reproduction, the only one which could be substantially influenced by the breeding method is fertility.
107

Hodnocení průběhu porodu u bahnic plemene suffolk / Analysis of the Lambing Process in Suffolk Ewes

ŠULCOVÁ, Veronika January 2015 (has links)
The Suffolk is the most well-known of the English lowland sheep breeds. A black-faced sheep with short-stapled wool, the breed is used primarily for meat production. The Suffolk is classified as one of the breeds with the best ability to fatten and its meat yield is approximately 60%. The breed is characterised by its good adaptability to different climate and breeding conditions and overall good health. The ewes are known for their high fertility rate, shorter oestrus cycle, excellent maternal instincts, and high milk production. As a result of these characteristics, the Suffolk has become a very popular breed around the world. This thesis focuses on the breeding of Suffolk sheep as one of the best breeds for the production of slaughter lambs. The thesis also looks at reproduction as a part of sheep breeding, as well as at the factors that have an effect on pregnancy, the birthing process, and the newborn lamb. The main objective of this thesis was to process the lambing data for a specific herd of Suffolk sheep, including performing an evaluation of the basic reproductive indicators, calculating the birth weight of lambs, and determining the ideal age for including ewes in the breeding herd. The basic reproductive indicators include fertility, fertilisation, breeding intensity, and weaned lamb production. In the studied herd of sheep, these indicators were calculated as follows: fertility 182%; fertilisation 91%; breeding intensity 155%; and weaned lamb production 159%. The average birth weight of the lambs was 3.9 kg and the average optimal age for inclusion in the breeding herd was determined to be 17.5 months.
108

Faktory ovlivňující produkční ukazatele masného skotu / Factors affecting productivity indicators of beef cattle

KRÁLOVÁ, Alena January 2015 (has links)
The aim of breeding suckler cows is same as the aim of any other activity- achieving the best results. Aspects like the quality of food, the corresponding energy value and correct feeding in terms of health and production, play an important part in nutrition. The concentration of energy of feed, within the group observed, for suckler had value of 5.4 MJ NEV. Preserved feed without undesirable content of butyric acid was graded as very good accordingly to the class of quality. The biggest cost item is the cost of feed. In a particular company, the price of feed for a cow with a bred calf represents 42% of total costs. The revenues from breeding of cattle are based on incomes from calves sales or fattening of them and their subsequent sale. An important part of an economic efficiency is a good fertility of cows. In a particular farm, the fertility for 2013 was 89% and 90% for 2014.
109

Regionální populační projekce / Regional population projections

DVOŘÁKOVÁ, Aneta January 2016 (has links)
This thesis deals with the regional population projections. The theoretical part is divided into several chapters, which describe and explain the basic concepts, such as demographics, birth rate, death rate and more. There are also analyzed the actual projection methods and specifying formulas. Last but not least consulted on the population projection of the Czech Republic in 2050 and the most recent projections up to the year 2100th. Own part is about the screening for districts in South Bohemian region. Projections were prepared for districts: Ceske Budejovice, Cesky Krumlov, Jindrichuv Hradec, Prachatice, Pisek, Strakonice and Tabor. As evaluation indicators were elected, population, life expectancy, total fertility rate and the secondary sex ratio or even sex ratio. Projections for population and life expectancy has been created specially for men and women.
110

Chovatelské a ekonomické vyhodnocení vybraného chovu koz / Breeder and economic evaluation of selected goat breed

CHVOSTOVÁ, Martina January 2007 (has links)
The research was done during 2004 {--} 2006 on ecological farm specialised for Czech white shorthaired goat. Milk production per lactation period was in 2004 390 kgs, in 2005 381 kgs. It was deeply below average. In 2006 it grew up to 678 kgs that was only little below average of 707 kgs in Czech Rep. The average day milk yield was that year 2,5 kg per goat. This breed has very low fertility in longterm. Farm match the requirements of financial health. In 2006 was the income per one goat 24 818 CZK and variable costs 17 310 CZK per goat.

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