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A Hurdle Negative Binomial Regression Model for Non-Marital Fertility in Namibia
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作者 Lillian Pazvakawambwa Nelago Indongo Lawrence Kazembe 《Journal of Mathematics and System Science》 2014年第7期498-508,共11页
The rise of non-marital fertility, which seems to defy the Bongaarts model by decoupling marriage from fertility, has become a subject of interest in both the developed and developing world. Consequences of non-marita... The rise of non-marital fertility, which seems to defy the Bongaarts model by decoupling marriage from fertility, has become a subject of interest in both the developed and developing world. Consequences of non-marital fertility are mostly negative particularly in developing countries. In Namibia, although premarital childbearing has been reported to be high and increasing, no studies have explicitly analyzed factors influencing non-marital fertility. This paper uses data from the 2006/7 Namibia DHS to establish the determinants of non-marital fertility among women by applying a two-part model, with one part to describe the presence of non-marital birth and the other part to explain its intensity (number of children born). Using the number of children ever born as an outcome, we explored various count data models. Based on the Voung statistics model comparison, we settled for the Hurdle logit Negative Binomial regression to model the number of non-marital births. Non-marital fertility in Namibia is associated with the age, with young women likely to have lower fertility compared to older women. Women with secondary or higher education had lower fertility compared those with no formal education. Findings also show that rural women higher fertility propensity compared to their urban counterparts even though there was no significant difference in fertility intensity. With regard to socio-economic status, fertility intensity decreased as the women got richer. Intervention efforts should focus on promoting education among girls and women especially in rural areas to improve their socio-economic status, reduce teenage pregnancy and non-marital fertility. 展开更多
关键词 non-marital fertility hurdle logit negative binomial two-part models Namibia
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Food Security: Where Are We Heading?
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作者 Chua Kim Aik Fakhrul Anwar Zainol Nalini Arumugam 《Journal of Life Sciences》 2016年第7期357-364,共8页
The issues of food security are an important aspect of every country for its social and economic growth and the eradication of poverty. It is particularly crucial for satisfying the needs of the ever-growing populatio... The issues of food security are an important aspect of every country for its social and economic growth and the eradication of poverty. It is particularly crucial for satisfying the needs of the ever-growing population in developing countries. Agriculture is the backbone of the people and the economy for developing countries, particularly in highly populated countries such as India, China and South East Asia. The world population is anticipated to rise to 8.3 billion by 2030 and to 9.2 billion by 2050. By that time, to feed the growing population, food production must double to keep pace with the escalating food demand. Agricultural commodities showed increases of 58.9% in import dependency ratio (IDR) as compared to 32.2% in 2013. Thus, this study attempts to review and explore the challenges of food security as well as the opportunities of the seed industry in Malaysia. 展开更多
关键词 Food security seed industry challenges OPPORTUNITIES Malaysia.
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鲁杰原则与“作为责任的主权”——以尼日利亚的尼日尔河三角洲为例
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作者 爱德华·奥桑·奥比 李鹏涛 《非洲研究》 2012年第1期149-160,12-13,共13页
当前尼日尔河三角洲地区的环境破坏、经济停滞和社会失序,这是企业相对于无数本土族群或语言群体的优势地位所导致的直接结果。这一优势的确立也是因为相关国家机构的监管缺失。鲁杰原则(Ruggie Principle)有效地实现了国家和公司之间... 当前尼日尔河三角洲地区的环境破坏、经济停滞和社会失序,这是企业相对于无数本土族群或语言群体的优势地位所导致的直接结果。这一优势的确立也是因为相关国家机构的监管缺失。鲁杰原则(Ruggie Principle)有效地实现了国家和公司之间的分割,用以消除企业经营活动在人权方面所造成的负面影响,从而有效地保护自己的民众。 展开更多
关键词 尼日利亚 尼日尔河三角洲 鲁杰原则 发展中国家安全 经济增长
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