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In this paper, Samuelson's simplified version of the Easterlin theory (Samuelson 1976) is extended to a continuous-time model with three age groups. This approach enables one to apply the qualitative theory of non-linear differential equations to show the existence of Easterlin-type cycles. In contrast to the discrete time model we obtain information about the period length of the cycle.This research was supported by the Austrian Science Foundation under grant P6601. 相似文献
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The authors develop an econometric model to examine the impact of migration on fertility in Greece in the period 1968-1986. In the model, the fertility equation is considered within a simultaneous equation system, and international migration is included as an explanatory factor of both fertility and per capita income. (SUMMARY IN FRE AND SPA) 相似文献
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Desplanques G 《Sociologie du Travail》1988,30(2):353-365
The current status of fertility and its control in France is reviewed. Consideration is given to changes in contraceptive usage, nuptiality, educational status and fertility, birth timing and spacing, and female labor force participation. The author notes that fertility has not declined significantly since the mid-1970s. Fertility differentials by geographical region and occupation are also considered. 相似文献
7.
Haberkorn G 《The International migration review》1992,26(3):806-842
A case study of temporary and circular Melanesian population mobility and labor migration focuses on the island of Paama in the Republic of Vanuatu (an archipelago of 80 islands) in Melanesia and on urbanization, which is a relatively recent phenomena. A critical analysis is provided of temporary and permanent migration and methodological inadequacies in explanations of mobility. Mobility is neither a cause nor a result of economic, social, and political change; it is the interrelationship among the general structural setting, people's personal and social environment, and their perceptions and actions. In the case of Paamese mobility, changes appeared in the source of migration and destination areas. There was a period of original land acquisition, when migrants returning from Queensland with tools were the only ones who could actually acquire land. Inequalities of land access date from this period. The population is dependent on external income sources as well as the need for plantation migration and a huge increase in bridewealth. Concurrently, "kampani" or community work, which ensures the continuous authority of local chiefs and village elders, creates problems for those seeking work for their own families. These conditions encourage out-migration. Rapid urban growth began in the 1960s with a diversified economy. Employment opportunities were available for women; single employee residence spaces declined. This meant families could permanently settle in urban areas. Retirement benefits were also available and contributed to securing permanent migration. There were growing needs for a stable, skilled labor force. Another change was the abolishment of the tripartite colonial administration. Rural disasters and price declines also triggered urban migration. Migration to the town of Port Vila by Paamese men and women between 1953 and 1982 is analyzed, based on 258 employment related mobility histories collected in 1982-83. Two processes are evident: continued periodic, short-term, rural-based circulation and permanent urban migration among Paamese to Port Vila. A major reversal of mobility is unlikely in the future. The reasons why are indicated. 相似文献
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The recent socio-economic transformations in Italy and its internal and external migratory movements
Recent migration trends involving Italy are described. The authors note that Italy has changed from a manpower-exporting country to a labor-importing country. Consideration is also given to changes in internal migration patterns. 相似文献
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Biffl G 《International migration (Geneva, Switzerland)》1985,23(1):45-72
The full economic importance of immigration becomes clear only when one examines the concentration of immigrant workers in certain industries and occupations, and this is done in the case of Austria to show the degree of segmentation of the labor market between indigenous and foreign labor. In the course of the 1960s the employment of foreign labor gained importance in Austria. As a consequence, bilateral agreements with the major recruiting countries were made, e.g., with Spain in 1962 and 1969, with Turkey in 1964, and with Yugoslavia in 1966. The reason for the increasing demand for foreign labor was the short supply of indigenous labor due to increasing participation rates and strong economic growth. The demand-pull for foreign labor gained momentum with the onset of the economic boom in 1970, so that by the end of 1973 the number of foreign workers had doubled in comparison to 1970. The 226,800 foreign workers accounted for 8.7% of total employment. The 1974-75 recession and the weak economic development ever since resulted in a decreasing demand for labor. At the same time, the supply of indigenous labor increased as a consequence of a demographic effect and because of increasing participation rates of women. From 1981 to the present, foreign employment decreased again due to the unusually long period of economic stagnation. During 1983, 145,300 foreign workers were engaged, i.e., 5.3% of total employment. The structure for foreign employment now differs greatly from that in the 1960s. The share of women in foreign employment has increased steadily from some 20% in the early 1960s to 31% in 1973 and 40% in 1983 -- a value comparable to the Austrian female share in employment. The reduction of foreign employment since 1973 affected, above all, Yugoslav men. the share of Yugoslavs in foreign employment decreased from 196,300 or 79% in 1973 to 92,200 or 61.7% in 1983. With the duration of foreign employment rising, the disribution of foreign labor over economic branches increased. In the early 1960s the employment of foreign workers was concentrated in 3 branches -- the construction sector (32% of all foreign workers), metal industries (16%), and textile industries (10%). In 1982 only 1/3 of all foreign workers were still employed in these branches as an infiltration by foreign labor had taken place in all sectors. The services sector showed the greatest increase in foreign employment since 1975. There has never been as strong a concentration of 1 nationality in a particular economic branch as in Switzerland, Germany, or France. Case studies in Austria reveal that it was an explicit policy for firms (and also unions and entrepreneur representatives) not to depend on only 1 nationality of foreign workers. According to the case studies, about 1/3 of all foreign workers today occupy jobs which are in direct competition with indigenous labor. Another 1/3 fill jobs which are complementary to indigenous labor. For the remainder it is difficult to say to what extent they belong to one or the other segment of the labor market, because there is no information available on the occupational job structure. 相似文献