scholarly journals Stability of Aberdeen Angus breeding values in the Czech Republic from 1997 to 2007

2011 ◽  
Vol 56 (No. 11) ◽  
pp. 509-520 ◽  
Author(s):  
DucháčekJ ◽  
PřibylJ ◽  
L. Stádník ◽  
VostrýL ◽  
BeranJ ◽  
...  
Keyword(s):  
Czech Republic ◽  
Direct Effect ◽  
Maternal Effect ◽  
Correlation Coefficients ◽  
Genetic Effect ◽  
Strong Relationship ◽  
The Czech Republic ◽  
Breeding Values ◽  
Angus Cattle ◽  
The Stability

We predict the stability of breeding values (BVs) for direct effect (DE) and maternal effect (ME) for live weights at 210 days of age in the entire population of purebred Aberdeen Angus cattle in the Czech Republic according to an increase of progeny number in performance recording over a period of 11 years (1997 to 2007) and the course of BVs for DE and ME during the years of observation in animals born until 1997.  Furthermore we compare genetic trends of BVs for DE and ME among animals born in different years and detect the level and significance of correlation coefficients among predictions of BVs for DE and ME performed during the years of observation. The animal model and the BLUPF90 programme were used for these predictions. The used model included the effects of animal, sex, contemporary group, dam, age of dam, and permanent environment of dam. The variance of BVs ranged from 4.96 to 10.87 depending on the year of evaluation and whether it was related to maternal or direct genetic effect. The animals were initially assigned to groups according to their BV in 1997, and this ranking was not affected by the BVs predicted in subsequent years. The existence of a negative correlation between direct and maternal effects was confirmed. The significant correlations (P < 0.0001) demonstrated a strong relationship between the BVs predicted in successive years, e.g. the correlation coefficient for the relationship between BVs for direct effect predicted in the last years of the examined period was above 0.9 and that for maternal effect was above 0.8. 

Development of Concretes with Resistance to High Temperatures in the Czech Republic and Surrounding European Countries

2013 ◽  
Vol 651 ◽  
pp. 120-125 ◽  
Author(s):  
Lenka Bodnárová ◽  
Jiri Zach ◽  
Jitka Hroudová ◽  
Jaroslav Válek
Keyword(s):  
Czech Republic ◽  
High Temperatures ◽  
Nuclear Power ◽  
Power Plants ◽  
Building Materials ◽  
European Countries ◽  
Terrorist Attacks ◽  
Load Bearing Capacity ◽  
The Czech Republic ◽  
The Stability

The resistance of concrete constructions to high temperatures at present is a much monitored issue for many scientific teams and experts in the stated area. This fact is mainly caused by fatal consequences originating in the case when concrete constructions are loaded by the effect of fire and consequent loss of their load-bearing capacity, for the population and the environment of our planet, in which we live in. The development of society goes hand in hand with the development of new building materials and as a consequence the requirements for building constructions increase which bring about extraordinary strict regulations in the area of fire safety. So, many high, non-traditional or specific constructions originate, e.g. nuclear power plants due to permanently higher demand for transport linkage and many tunnels have originated between European countries as a result. Unfortunately, in this relation the threat of terrorist attacks increases and unexpected natural disasters which also threaten the stability of the mentioned constructions. The objective of the article is to familiarize readers with the results of research concerning the improvement of the resistance of the concrete to high temperatures originated during fire instances.

scholarly journals Development of kaolin production, reserves and processing in the Czech Republic in 1999–2015

2017 ◽  
Vol 33 (3) ◽  
pp. 121-142 ◽  
Author(s):  
Jaromír Starý ◽  
František Pticen ◽  
Jakub Jirásek ◽  
Martin Sivek
Keyword(s):  
Czech Republic ◽  
Mining Industry ◽  
Silica Sand ◽  
Industrial Minerals ◽  
Growth Trend ◽  
The Czech Republic ◽  
Mine Production ◽  
Export Restrictions ◽  
The Government ◽  
The Stability

Abstract This paper aims to characterize and interpret the trends in reserves, resources, and in the mine production of crude kaolin and output of beneficiated kaolin between 1999 and 2015 in the Czech Republic. With nearly 1.2 billion tonnes of total resources, kaolin belongs to the key industrial minerals of the Czech Republic. With an annual output of about 3 to 4 million tonnes of crude kaolin and of around 0.6 million tonnes of beneficiated kaolin, the Czech Republic ranks among the top European and world kaolin producers. Mine production of crude kaolin has been relatively stable since 1997, while the output of beneficiated kaolin has been increasing gradually during the same period. The increased production and yield of beneficiated kaolin resulted from the use of progressive methods in kaolin processing, primarily high-intensity electromagnetic separation. The positive growth trend was not a reflection of the stability of the extractive sector and domestic industry, but it was the result of a pro-export orientation. The amount and share of exports are continuously increasing and constitute 80% of the entire kaolin production sector at the present time. The only exception occurred in 2005-2008, when exports declined by one-half as a result of the government´s export restrictions. The results of analyses were not optimistic for the Czech economy and indicated a sharp downturn in the domestic mining industry. Moreover, a similar situation exists in the case of other essential industrial minerals such as feldspar, clays, and silica sand.

scholarly journals Role of Czech Republic in the Development of Belarus Civil Society

2021 ◽  
Vol 21 (3) ◽  
pp. 54-61
Author(s):  
Mikhail Vedernikov ◽  
Keyword(s):  
Human Rights ◽  
Czech Republic ◽  
Historical Context ◽  
Foreign Affairs ◽  
The Czech Republic ◽  
Stage Of Development ◽  
Support For Democracy ◽  
The Stability ◽  
Integral Feature

The reaction of the Belarusian authorities to the August 2020 demonstrations, drew strong condemnation from the Czech Republic. The article analyzes the reasons for such close attention of the Czech officials to the Belarusian problems. The historical context of the Czech Republic’s support for the Belarusian opposition is outlined; revealed the human rights and value aspects of the foreign policy of Prague, where support for democracy and human rights is an integral feature of Czech diplomacy at its present stage of development. The author examines the «Program of Transformational Cooperation» of the Czech Ministry of Foreign Affairs. He comes to the conclusion that the Belarusian direction has always been among the priorities and has not disappeared from the agenda. However, the stability of the Belarusian regime led to the fact that the Czechs began to contribute to the development of democracy in other countries, where its «implantation» was more real.

scholarly journals Modeling honey yield, defensive and swarming behaviors of Italian honey bees (Apis mellifera ligustica) using linear-threshold approaches

BMC Genetics ◽  
2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Sreten Andonov ◽  
Cecilia Costa ◽  
Aleksandar Uzunov ◽  
Patrizia Bergomi ◽  
Daniela Lourenco ◽  
...  
Keyword(s):  
Genetic Correlation ◽  
Maternal Effect ◽  
Honey Bees ◽  
Defensive Behavior ◽  
Genetic Effect ◽  
Breeding Values ◽  
Linear Threshold ◽  
Swarming Behavior ◽  
Direct Genetic Effect ◽  
Honey Yield

Abstract Background Genetic improvement of honey bees is more difficult compared to other livestock, due to the very different reproductive behavior. Estimation of breeding values requires specific adjustment and the use of sires in the pedigree is only possible when mating of queens and drones is strictly controlled. In the breeding program of the National Registry for Italian Queen Breeders and Bee Producers the paternal contribution is mostly unknown. As stronger modeling may compensate for the lack of pedigree information, we tested two models that differed in the way the direct and maternal effects were considered. The two models were tested using 4003 records for honey yield, defensive and swarming behaviors of Italian honey bee queens produced between 2002 and 2014. The first model accounted for the direct genetic effect of worker bees and the genetic maternal effect of the queen, whereas model 2 considered the direct genetic effect of the queen without maternal effect. The analyses were performed by linear (honey production) and threshold (defensive and swarming behavior) single-trait models; estimated genetic correlations among traits were obtained by a three-trait linear-threshold model. Results For all traits, the highest predictability (correlation between breeding values estimated with and without performance records) was obtained with model 2, where direct genetic effect of queens was considered. With this model, heritability estimates were 0.26 for honey yield, 0.36 for defensive behavior, and 0.34 for swarming behavior. Multi-trait estimation resulted in similar or higher heritability estimates for all traits. A low, positive genetic correlation (0.19) was found between honey yield and defensive behavior, whereas the genetic correlation between honey yield and swarming behavior was moderate (0.41). A strong, positive genetic correlation was found between defensive and swarming behaviors (0.62). Predictability for multi-trait evaluations was higher for honey yield (0.46) and defensive behavior (0.30) but almost identical for swarming behavior (0.45) compared to corresponding single-trait predictability. Conclusions Multi-trait evaluation using a model that accounts for the direct genetic effect of queen was the best approach for breeding value estimation of Italian honey bees. The results suggest a new direction for selection of linear and categorical traits in breeding programs where drone origin is unknown.

scholarly journals Party Institutionalisation in the Czech Republic: Towards a New Measurement of the Theoretical Concept

2015 ◽  
Vol 17 (3-4) ◽  
pp. 249-275 ◽  
Author(s):  
Jakub Stauber
Keyword(s):  
Czech Republic ◽  
Political Parties ◽  
Party System ◽  
Theoretical Concept ◽  
System Level ◽  
The Czech Republic ◽  
Electoral Support ◽  
Overall Stability ◽  
Different Types ◽  
The Stability

The overall stability of the party system is usually studied on the basis of system-level aggregates such as electoral volatility or the effective number of political parties. Such an approach can be problematic, because it primarily measures just one dimension of stability, which is defined as the stability of electoral support. The article argues that this external dimension of stability should be further analysed in the context of the development of intra-party structures. The institutionalisation theory includes both dimensions, so it is capable of interpreting complex relations between them. Based on empirical data, the article systematically compares nine relevant political parties in the Czech Republic to better understand differences in the stabilisation of different types of party organisations in the context of party system changes in recent years.

scholarly journals Openness And Inflation: Evidence From Nine Eastern European Nations

2013 ◽  
Vol 13 (1) ◽  
pp. 21
Author(s):  
Rutilio Martinez ◽  
Vish Iyer
Keyword(s):  
Czech Republic ◽  
Correlation Coefficients ◽  
Eastern European ◽  
The Czech Republic ◽  
Significant Coefficient ◽  
Inflation Rates ◽  
Cross Country

Correlation coefficients between inflation and openness were estimated, with data from 1996 to 2010, for Bulgaria, the Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Romania and Ukraine. Eight of the nine coefficients were, as proposed by macroeconomics, negative, although the coefficients for Bulgaria, Estonia, Latvia and Ukraine were not significant. Lithuania's positive and significant coefficient suggested that if openness would not have increased, inflation would have been higher. Cross-country coefficients estimated for 1996, 2000, 2005 and 2010 were negative but not significant due to large differences between the inflation rates of countries that had very similar rates of openness.

scholarly journals Current measures to maintain the stability of workers in Slovak companies

2020 ◽  
Vol 83 ◽  
pp. 01030
Author(s):  
Jana Kissová ◽  
Gabriela Dubcová
Keyword(s):  
Czech Republic ◽  
Slovak Republic ◽  
Emergency Situation ◽  
Current Situation ◽  
Economic Dimension ◽  
The Czech Republic ◽  
The Social ◽  
Short Period ◽  
The World ◽  
The Stability

Over a short period of time, individual countries in the world face a common problem that affects them and adversely affects the lives of individuals. In connection with the current emergency situation related to the corona virus pandemic, it is possible to notice fundamental changes and enormous impact in the social or economic dimension. The aim of the article is to provide an overview of the current situation in selected countries and to compare the system of measures in the Slovak Republic and the Czech Republic that were adopted in order to stabilize or retain workers or aimed at elimination of imminent damage.

scholarly journals The Selected Factors Influenced Growth Ability to Weaning of Aberdeen Angus Cattle

2015 ◽  
Vol 63 (2) ◽  
pp. 457-461 ◽  
Author(s):  
Renáta Toušová ◽  
Jaromír Ducháček ◽  
Luděk Stádník ◽  
Martin Ptáček ◽  
Jan Beran
Keyword(s):  
Direct Effect ◽  
Growth Parameters ◽  
Live Weight ◽  
Statistical Software ◽  
Breeding Values ◽  
Angus Cattle ◽  
Growth Indicators ◽  
Growth Ability ◽  
Effect On Growth

The aim of this study was to evaluate effects of sex of calves, year of calving, cows’ parity and sire effect on growth ability to weaning. The evaluation of growth indicators of Aberdeen Angus cattle was performed in the period of 4 years (2010 to 2013) in 2 different farms. A total of 272 calves (bulls, n = 141; heifers, n = 131) were monitored. The indicators of live weight at birth, live weight at the age of 120 and 210 days, average daily gains from birth to 120 and 210 days of age were observed. Statistical software SAS 9.3 was used to analyze the results. The highest result growth parameters of calves were observed from cows on 3rd and 4th parity. In 2012 we observed the highest values of calves’ growth ability compare to others. In evaluating the sire effect differences (P < 0.05–0.01) were found mainly between the top three sires from the first evaluated herd (PAA240, ZAA562, ZAA595) and three sires from the second evaluated herd (ZAA675, ZAA697, ZAA762). The order of sires according to weight in 210 days of their offspring is then almost perfect reflection of the relative breeding values (RBV) for the direct effect of growth.

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