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Tervamaki E 《Fennia》1987,165(1):1-88
A systems approach is applied to the study of migration trends in Finland for the period 1971-1981, with particular attention to the period 1971-1978. The results indicate the existence of six permanent migration regions linked by a multilevel system. "The organization of this system varies from one part of the country to another, the most common modes being hierarchical tree flow networks belonging to a nodal system and polar and dendritic networks associated with a highly polarized system. The nodal system mode is seen to be increasing in currency."  相似文献   
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This paper is concerned with the reciprocal relationship between migration and development in Third World settings. Using individual-level data for Venezuela, migration behavior is related to a person's age, educational attainment, gender, and characteristics of his/her place(s) of residence as an out-migrant, in-migrant, or stayer. Place characteristics are in terms of four groups based on employment patterns: the core, regional centers, resource frontiers, and traditional rural areas. Four questions are of concern. First, does development influence migration? All analyses indicate this is so. Second, does migration influence development? Findings are ambiguous in that places experiencing improvement in their mix of human capital lagged in the net number of persons obtained through migration whereas a gain in numbers was accompanied by deterioriation in human capital profiles. Third, was incipient polarization reversal occurring in Venezuela in the late 1960s, early 1970s? This paper departs from the usual approach by addressing this question in terms of human capital attributes instead of population aggregates. On this basis, polarization reversal is in evidence, particularly in regional centers. Finally, this study answers in the affirmative that places with different development characteristics generate migration streams differing in type, magnitude, explanation, and impact.  相似文献   
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This article explores fourth- to seventh-century narratives about oaths of collective secrecy, which our sources typically frame negatively. By examining the terminology used in reference to these promises, the dynamics inherent in the practice and its relationship to oath-taking customs in other contexts, and the influence of Christianity on the discourses around such pledges, we can see that late antique authors routinely frame the swearing of these pacts as a transition to a liminal state of existence. Through this rhetoric, church and state authorities constructed conceptual boundaries between those who agreed and disagreed with their definitions of acceptable behaviours.  相似文献   
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Two contexts from the Colombian sites, Yotoco Ferry and Moralba, had been linked by archaeological similarities in pottery style, and dated by association with ware from other sites at circaa.d. 1000. However, radiocarbon dating of those contexts set Moralba at circa 800 b.c. , some 2000 yr older than Yotoco Ferry. Thermoluminescent dating of pottery from Yotoco Ferry dated it at circaa.d. 900, and pottery from Moralba was dated at circaa.d. 870. In addition a metal-smelting pottery crucible, thought to be prehispanic, was studied by thermoluminescence and dated, on the contrary, at less than 120 yr old.  相似文献   
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