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排序方式: 共有8694条查询结果,搜索用时 15 毫秒
881.
Jones GW 《Population studies》1980,34(2):279-292
Summary Median age at marriage for women has risen sharply for each of the three major ethnic groups - Malays, Chinese and Indians, in Peninsular Malaysia since 1957. The sharpest rise has been recorded for Malays and Indians, whose median age at marriage was barely over 17 in 1957. A shortage of potential husbands in the traditionally sanctioned ages contributed to the rise for Malays and Indians, but was probably not the paramount reason; average age differences between the spouses narrowed, but median age at marriage for men actually rose. During the same period, the previously extremely high divorce rates amongst Malays have fallen sharply, though wide inter-state differences remain. The sharp changes in marriage patterns reflect, and in turn are partly responsible for, far-reaching social and economic changes. They have profoundly affected fertility levels and patterns, as well as intra-familial relationships. 相似文献
882.
The data collected in the Bandafassi demographic study in Eastern Senegal, a small-scale intensive and experimental follow-up survey of a population of about 7,000 in 1983, were analysed to derive an estimated life table. The use of multi-round surveys, combined with anthropological methods to estimate ages and collect genealogies, has resulted in unusually reliable data. Taking into account the uncertainty of the estimates due to the small size of the population, mortality was high, with life-expectancy at birth close to 31 years; a pattern of infant and child mortality close to that observed in other rural areas of Senegal, with a very high level or mortality between ages six months and three years; a seasonal pattern in child mortality with two high-risk periods, the rainy season and the end of the dry season; an adult mortality pattern similar to that described in model life tables for developed countries; no significant difference by sex or ethnic group. The Bandafassi population study and a few similar studies suggest that one possible way to improve demographic estimates in countries where vital registration systems are defective would be to set up a sample of population laboratories where intensive methods of data collection would continue for extended periods. 相似文献
883.
A proportional hazards model was used to evaluate the association between ten categorical covariates and the risk of pre-term delivery for women having their first child and women in subsequent pregnancies. An adaptation of the model for use with grouped survival times made it possible to model foetal life times between 28 and 36 completed weeks of gestation for 67,000 Scottish singleton births in 1981. The use of the model was justified by testing time-dependent effects. For both groups of women age, and a history of abortion, were major factors associated with increased hazard. For women experiencing a second or higher-order birth a history of perinatal death was also associated with substantially increased hazard to the pregnancy. 相似文献
884.
885.
886.
Stephen G. Perz 《Population and environment》1997,18(3):301-324
This article examines child mortality as an indicator of the quality of life among migrants living in Brazilian Amazonia in 1980. I focus on migrants in the frontier states of Pará and RondÔnia, which experienced rapid settlement during the 1970s. The key question here is the effect of settlement location on child mortality rates. While RondÔnia had lower ratios of population per public health establishments and personnel than Pará, RondÔnia nonetheless exhibited a higher malaria prevalence in 1980. I therefore attribute locational differences in child mortality to environmental factors important to malaria transmission rather than to health care infrastructure. The findings from multivariate regression analysis show that net of the effects of human capital, migration history and migrant living standards, settling in Pará rather than RondÔnia resulted in significantly lower rates of child mortality. These findings suggest that environmental factors coinciding with location of frontier settlement had important consequences for the living standards of migrants in the Brazilian Amazon. 相似文献
887.
Attention is given to population and growth and the impact on the environment and resources in China. Policies for managing the environment and instituting population education are also addressed. The first position paper of the National Environmental Protection Agency (NEPAC) on June 2, 1990 is summarized. The population of China was 1.11 billion in 1989. The rate of growth in 1988 was 14.2/1000 in 1988. 91% live in the southeast on 43% of the land. Land area is 9.6 million square miles. 65% can be made arable, and 14% is cultivated. China has 7% of the world's arable land and 20% of the world's population. Population growth has reduced arable land/captia. The impact on forests has been deforestation. 13% of land is currently forested, and timber reserves encompass 9.14 billion cubic meters, or 9 cubic meters/person. The demand for firewood and timber will increase. The impact on grasslands has been overgrazing and desertification at a current rate of 1560 square kilometer/year. The impact on energy resources is a greater demand for coal which will increase and thus increase pollution of the environment. The impact on water resources is greater demand and increased pollution. Water resources are 2700 cubic meters/person or less than the world average. 26.8 billion tons of waste water were industrially discharged out of 36.8 billion tons. 436 of the 532 rivers are polluted. The impact on the environment is a decreased standard of living. NEPAC reported that air pollution was slightly reduced in 4% of the cities in 1988, increased in 4%, and stable in the remaining cities. Water quality improved through the lowering of industrial waste water discharges, but 72% of river segments are still above the standards. Each major river system is discussed. Noise increased, and industrial solid wastes increased. Forest reserve is 9.141 billion cubic meters; the man-made forest has increased. The loss of grasslands is .13 million hectares/year. Cultivated land is 95.72 million hectares, but 100,000 hectares/year are damaged by natural disasters and 6 million are polluted by industrial wastes. 606 nature preserves have been established. In 1989, a complete legal system of environmental protection was established and investment increased. 相似文献
888.
Myers GC 《Korea journal of population and development》1995,24(2):159-172
"After introductory comments on the theme of ?ageing east and west', this paper looks at trends in ageing and responses to ageing over time, with particular reference to European experience. The evidence is reviewed in historical, cultural, religious, political and ?social political' perspective. Attention is drawn to the different patterns of experience and of policy responses characteristic of the different countries and regions within Europe both past and present. The paper concludes with a review of [the] latest trends and prospects in ?community care', which could signal a seeming point of convergence between east and west." 相似文献
889.
Pitman GE 《Journal of homosexuality》2000,40(2):49-64
Based on interviews conducted with eight lesbians, this paper explores how the intersection of gender, sexual identity, race, ethnicity, and class affect lesbians' feelings about their bodies. Their responses suggest that, while being female has a strong effect on lesbians' feelings about their bodies, issues of race, acculturation, and class also affect body image. Lesbian feminism and S/M politics also appear to play a significant role in lesbians' body image. These findings highlight the limitations of existing theories about body image and call for a more complex theory incorporating a more diverse range of experiences. 相似文献
890.