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Background. This study aims to analyse the relationship between physical activity (PA) and body mass index (BMI) in undergraduate university students of three fields of study from the four Visegrad Group countries – Slovakia, the Czech Republic, Poland, and Hungary. Material and methods. The research was conducted in 2015 on adolescent undergraduate university student populations in three fields of study – humanities, medical, and technical sciences. The sample included 2,484 students in total. The data was collected using the extended version of the standardised International Physical Activity Questionnaire (IPAQ). Students completed the questionnaire via the INDARES online system. Results. The results confirmed significant differences in PA between sexes in favour of males both in its overall manifestation and in the individual levels of PA intensity (p<0.05). The comparison of the four countries revealed significant differences in PA in males and females in all PA domains (p<0.05). The evaluation of the total BMI, as well as the one measured in individual countries confirmed a significant difference between sexes in favour of males (p<0.05). The study of the relationship between PA and BMI did not reveal a statistically significant dependence in any of the tested domains. This conclusion applies both to males and females. Conclusions. Males are generally more physically active than females overall and in individual fields of study. Also, males exhibit higher BMI in all the studied categories. No significant relation between PA intensity and volume and BMI was found in either sex.
The aim of the research presented in the article was to diagnose the level of entrepreneurship among young dwellers of rural areas. It presents the responses to the ąuestionnaire ąuestions directed to 94 students of University of Science and Art in Siedlce. Young people entering the labour market have great potential, which can be used for developing the area they live on. The article shows the attitude of young people to the issue of entrepreneurship.
The causality Granger test was used to assess the causal links between the prices of milk in selected European Union countries. The Granger test is based on the vector autoregression models - VAR. The conducted research allowed to identify causal relationships between the prices of milk in the following countries: Poland, Germany, France, the Czech Republic, Slovakia.
This article discusses the subject of the efficiency of the transformation of tourism interest defined as arrivals in tourist accommodation establishments into outputs, such as collective tourist accommodation establishments and GDP per inhabitant in the EU countries. For the measurement of efficiency the DEA method was used and the following models were assumed: CCR, BCC, NIRS. As a result was confirmed that significant similarity in the efficiency of the transformation of the inputs above referred to into outputs was only observed in the group of richer countries (GDP > average for the EU) or in the group of poorer countries. The analysis conducted proved that richer countries achieved higher PTE, while poorer countries achieved higher SE.
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Tax burden in Slovakia and European Union countries

86%
Tax burden expresses how high is the tax ratio or what part of gross domestic product is created by paid taxes and contributions. This article presents data on tax revenue and its relationship to gross domestic product in Slovakia and the European Union. Data of Eurostat and OECD Tax Database serve as the base for analysis, the reporting period presents years 2002–2011.
The aim of the study was comparison of the milk performance of primiparous cows from 6 European countries with Polish Holstein-Friesians, as well as to demonstrate the differences within the different genetic groups. Material consisted of data contained in the dairy reports gathered from 26 farm “Healthy Cow” project. The analysis involved data including milk yield and its chemical composition, i.e.: fat, protein, lactose, solids, and urea somatic cells count in milk. On the basis of these results, it was found that the country of origin had significant impact on daily milk yield, % fat, % protein, % of lactose and also affected dry matter content, urea and somatic cells in the milk of lactating cows. Research reviled that there were not differences in milk performance between imported and native cows. However, the breed of cows had an strong impact on daily milk production, % protein, % lactose,% dry weight, as well as urea content and somatic cells count.
The aim of this research was to prove that in ageing society the increasing number of the seniors has significant role in employment. The study included Visegrad 4 countries (Czech Republic, Hungary, Poland and Slovakia). The determination and correlation coefficients and the trend equations show the different but significant connection between the employment of senior workers and their increasing number in society. If the state does not take any proactive measure to invest into the value of the human capital of older workers, the ageing, sick, unemployment citizens will cause a serious social and financing problem in the near future.
In the enlarged European Union the agricultural structure are diverse in most of the member states, but they have to use the same agricultural policy, which could have different effect in the agricultural sector. It is necessary to analyze and become acquainted with the agricultural structure in the Visegrad Group to form the Common Agricultural Policy reform.
One of characteristic feature of contemporary data bases is their growing dynamics. The number of registered entities as well as their group structure tends to dynamically grow. In order to effectively determine the rapidly changing number and structure of clusters, appropriate methods of cluster analysis have to be applied. The paper presents the results of simulation research concerning the possibility of applying self-learning GNG neural networks in clustering data from data streams.
The main aim of this paper is to overview the trends in assistance to agriculture both in developed and developing countries and to compare them with trends in food products trade to verify the hypothesis assuming that although the level of price distorting assistance to agriculture in high-income countries in last three decades has been decreasing, agricultural markets in these economies are not becoming more open for the food products from the developing countries. The empirical analysis is based on the World Bank database on estimates of distortions to agricultural incentives and on the World Integrated Trade Solution (WITS) software. Research results suggest that despite numerous policy reforms both in developed and developing countries, there is still a high rate of assistance to agriculture, especially in high-income economies. Although most of them lowered the price support for food products, it has been partly replaced by assistance decoupled from production. At the same time, some developing countries continue their anti-agricultural bias, but most of them ceased taxing the agricultural sector. What is more, share of developing economies in global food trade is increasing, this trend, however, results mainly from increasing intra-trade between developing economies and not from the liberalization of food markets in developed countries.
The article discusses the problem of similarities and differences of countries with respect to the structure of household expenditure in the European Union. This issue is important due to problem of economic and social and cohesion among member states. Comparative analysis of structures of consumption expenditures of households in EU member countries is performed using distance measure approach taking into account relative differences. For this purpose measure known in Polish language literature as Nowak’s measure is applied. Background for analysis is data collected from national sources by the Statistical Office of the European Communities (Eurostat). Using quantitative analysis countries with similar to Poland structures of consumer expenditures are identified.
The European Union, consisting of integrated country organization, is very diversified when it comes to social policy models and vision of organizing social life. This article presents the most important European models considering economic aspects. The results of fighting the economic crisis and long term costs of different policies are presented.
Over the past few years, diversification and pluriactivity of farmers and farming households has been increasing in EU-27countries. But the type of diversification activity encouraged, as well as their scale, appears to be very different across the EU. Therefore the analysis of spatial diversification of other gainful activity of farm households in EU countries is the main purpose of this paper. 27 UE countries described with 9 variables relating to the non-agricultural activity of farms are the analysed objects. The carried survey helps to show spatial disparities and to discriminate groups of countries with a similar farmers non-agricultural activity. There were used chosen methods of multidimensional comparative analysis which enable clustering the multicriterial objects: Czekanowskis diagram, Wards method, and k-mean algorithm. As a final result there were formed 5 clusters with countries about similar level of farm diversification. It may be stated, that a development of diversification of agricultural holdings is correlated with a spatial arrangement. Neighbouring countries belong to the same clusters of other gainful activity kinds.
Physical activity is one of the most important elements of a healthy lifestyle, and its lack or insufficient amounts can lead to serious health disorders. There are many adult diseases which are associated with the behaviour, lifestyle during puberty, including physical inactivity. It was therefore decided in this study to present the physical activity of young people from six countries in the world in the context of different variables. The following countries: Brazil, Spain, Poland, Czech Republic, Norway and Nepal were selected for comparison. Although all studies used the same standardized research tool, ie. the International Physical Activity Questionnaire IPAQ, in the course of analysis, the authors encountered difficulties with comparability, associated with the usage of various methods and data processing, which could result in different or reduced comparability. Consequently, it was decided not to make a detailed comparative analysis of individual research results and the presentation of the key conclusions brought about selected studies worldwide. Analyses of studies which have been conducted in different cultural contexts, confirm once again the thesis of the decline in physical activity levels with age for both girls and boys. Gender quite substantially differentiated physical efforts in adolescents. Girls at the age of adolescence are less physically active than boys. It was also noted that the increase of sedentary behaviour among children and adolescents and their disastrous consequences have an impact on the health and life in this age group, the studies of sedentary lifestyle have become a very important subject of many studies. Girls are still “more sedentary” than boys. Many authors, in order to ensure the reliability and relevance of their research, complied with the objective instrument eg. accelerometer or metabolic analyzer.
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