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In the text finite mixtures of lognormal distributions are used for the modelling of net annual income per capita and equivalized income of the Czech households (in CZK) in 2004-2010. The development of distribution of number of members of households is analysed and the characteristics of standardized units according to EU and OECD methodologies are given. Data from the survey EU-SILC organized by the Czech Statistical Office from 2005-2011 (dealing with incomes from 2004-2010) are used for the analysis. Models (with incomplete data) with two to four artificial components are used in order to fit the distribution of incomes; the development of their characteristics is shown. All estimates in the text are maximum likelihood estimates, EM algorithm in the program R is used for the optimalization. Models are compared with the use of Akaike criterion. Adapted from the source document.

The conventional view of the sustainability of social development is based on the works of the Roman Club, particularly the book "The Limits to Growth" by Donella Meadows and her colleagues (1972). In their opinion, the human population and economy are depleting the wealth of the Earth and pollutants and wastes are burdening the environment. However, the concern that mineral resources will be depleted is unsubstantiated. Environmental economics argues that a higher number of people and a higher income make resources scarcer on a short-term basis. For investors and entrepreneurs, higher prices represent an opportunity and an incentive to search for solutions. Many of them will not succeed in this search and they will bear the costs on their own. However, in a free society, the solutions are eventually found. And in the long run, we are better off thanks to the new discoveries than if the original problems had never occurred. Adapted from the source document.

The study is focused on the relations between Czechoslovakia and Egypt in the years 1945-1948. The first part outlines the relations at the time of World War II because even in this period they were not interrupted. The study also describes the internal and foreign policy of Czechoslovakia and Egypt for the sake of gaining a better understanding of their interrelationships. The greatest amount of attention, however, is paid to the two countries' business relations, their embassies and Czechoslovaks who lived and worked in Egypt. The study describes the transformation of the relations in connection with how the international situation was altered in the examined period. The research is based primarily on a processing of archival materials and their subsequent analysis. Adapted from the source document.

The People's Republic of China (PRC) meets the criterions of a multinational state - on its territory there live more than three ethnic groups and with respect to their territorial distribution these nationalities have a certain degree of influence on the internal situation in the PRC. The majority nation in the PRC is comprised of the Han nation (92% of the population according to the 1990 census data). The relatively high homogenity of Chinese population might lead to an underestimation of the ethnic question in contemporary China. As the minority populations inhabit sensitive strategic border areas with rich natural resources, this problem should not be overlooked. (SOI : MO: S. 94)