The contemporary ethnic movement of the Seri has been little pronounced up to now. It is evident that in the community Punta Chueca a fundamental cultural change is taking place. Even though it is a long-term process, only in the 1970's the community had opened up to the surrounding world, in the first place because of the building of better infrastrueture between Punta Chueca and the Mexican village Bahia de Kino. The no madic culture radically changed because of the settled life-style and many aspects of the culture lost its function in the present world. For preservation of the cultural identity it is necessary to substitute such aspects with new ones, or to accentuate the existing aspects. The substitution and advocacy of certain cultural aspects is connected with different reflection of the state of things by different generations. The young are more inclined to accept the new life forms and the future of the ethnic group they see in its drawing nearer to the surrounding Mexican society. They don't want to stay isolated any more and to resign on the possibilities of the modern world. Within this group there are some individuals who feel that for maintaining the peculiarity of the Seri culture it is necessary to turn back to the culture of the forefathers and to develop it. However, in their interpretation these aspects acquire other functional value, because the smooth continuity to the life of the forefathers is missing. The making of new functional forms is apparent also in other areas of life of the Seri youth, in their endeavour to use traditional dress and decoration, their return to the declaration of sacred places etc. In their behavior the young Seri have been influenced by their knowledge of the image of the „traditional Indian“ of Mexicans or turists and they try to fulfill this perception. So, many aspects serve to the young generation to create an all-compassing cathegory of an „Indian without a deep concern for the peculiarities of their own culture. The older generation, on the other hand, tends to preserve the isolated State of the ethnic group and to keep and fortify the ,,traditional" life of the forefathers. Thanks to their dominance of the key offices in the Elder Council because of the age hierarchy the older persons can with more ease make decisions on the cultural life of the community. The future life of the community depends mainly on the attitudes of its pr esent-day young people. and They are at the down of crucial changes and its up to them if they allow the assimilation of their community in the process of its coming closer to the Mexican society, or if they will be able to find such social model that would preserve visible, characteristie cultural aspects. But its also up to the slowly dying-out older generation to know and to have strength to pass the experiences and knowledge to the coming generations.
The article outlines the book culture of the Rudolphine period on the examples of several works by Tycho Brahe (Instruments of the Renewed Astronomy), Johannes Kepler (Somnium: The Dream, or Posthumous Work on Lunar Astronomy; Conversation with the Starry Messenger) and Galileo Galilei (The Starry Messenger). It is based on both research outcomes that have already been published and those that are being prepared for printing. and Alena Hadravová.
Advances in the statistical analysis of longitudinal data has been so rapid, that it has been difficult for empirically oriented social scientists to remain informed of all new developments in this important area of social methodology. This article offers some guidance on the use of various types of panel data analysis techniques, paying particular attention to the analysis of longitudinal panel data. The aim of this article is to describe in a succinct manner the logic underpinning a number of panel analysis techniques; outlining the types of inferences that can be drawn from employing specific techniques, and providing the reader with references to the literature associated with particular forms of panel data analysis. Five types of panel data analysis are discussed: Event history analysis, Sequential analysis, Hierarchical linear (or multi-level) modeling (with application to longitudinal data analysis), Structural equation modeling with longitudinal data, and use of Log- linear and Markov chain models for longitudinal data with categorical variables., Petr Pakosta, Petr Fučík., and Obsahuje bibliografii a bibliografické odkazy
The existence of pollination syndromes and the degree of specialization in these systems are still discussed. Three examples from the tropical mountain communities in the Bamenda Highlands (Cameroon) show that a detailed knowledge of plants and their visitors and pollinator behavioral studies are necessary before evolutionary hypotheses can be formulated., Michael Bartoš, Eliška Padyšáková, Štěpán Janeček., and 7 barev. fot.