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161.
Lohrmann R 《International migration (Geneva, Switzerland)》1987,25(3):253-266
The growing concern with illegal, or undocumented, migration in developing countries is described. The author notes that although such migration occurred in the past without causing concern, changing economic, political, and social factors since the 1970s have caused governments to attempt to control such flows. A review of regional trends is included, and the consequences of illegal migration for both countries of origin and destination are examined. (SUMMARY IN FRE AND SPA) 相似文献
162.
Polls taken in late 1980 and 1984 varied by up to 20 pointsin the spread they reported between Democratic and Republicanidentifiers. We found three systematic and sizable differencesacross polls: polls that sample only voters, polls that emphasize"today" or the present in their question wording, and pollsthat are taken close to election day (at least in circumstanceslike those of 1984) tend to favor the party currently advantagedin the presidential race. 相似文献
163.
Menon R 《The International migration review》1987,21(1):86-95
"This article examines the incidence of [job-related] transfers in Malaysia. The retrospective migration data from the Malaysia Family Life Survey [conducted in 1976-1977] are used to demonstrate that transfers comprise 18 percent of all migration in the country and that there has been a rise in the incidence of transfers over a 35 year period. Factors underlying this trend are outlined. Furthermore, significant differences in age, educational attainment and other characteristics between transferees and other types of migrants are identified and their implications discussed." 相似文献
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Mortality trends in the USSR from the middle of the nineteenth century to the present day are analyzed, with a focus on changes in life expectancy. The authors note that life expectancy increased up to 1964-1965, declined subsequently, and stabilized during the 1980s. Life expectancy has again started to rise since 1985. More detailed analyses of mortality differentials by sex and age and for the rural and urban populations are included. (SUMMARY IN ENG) 相似文献
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