楼主: oliyiyi
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1101
oliyiyi 发表于 2015-10-7 10:24:24
As can be seen from Table 1, China's dependency ratio will start to rise. The children dependency ratio is relatively stable. It is the elderly dependency ratio that will be the root cause. The elderly dependency ratio is projected to rise from the current 11% to 38% by the year 2050. Based on the 2000 Census, China's 60+ population accounts for 10.5%, and is projected to rise to 19.5% in 2025 and 29.9% by 2050. In absolute numbers, this implies an elderly (60+) population will rapidly increase from 129 million in 2000–394 million by 2050; a threefold increase in half a century.

1102
oliyiyi 发表于 2015-10-7 12:33:01
The above are projections based on the 2000 census and a lot has happened since.6 The Chinese government is in the process of discontinuing the one-child policy, but how effective this will be is still uncertain. Technically, less than 40% of the families are affected by the one-child policy, and the one-child policy has a “binding effect” on even less (under 20%).7 Furthermore, casual survey of the young people shows that many do not want more than one child, some even plan to have no children. Even in the best circumstances, the abandonment of the one-child policy will increase the number of young population with no effect of the working age group for over a decade. This will further worsen the dependency ratio as the children dependency ratio will rise. Even when the new added children enter the labor force in the late 2020s, the absolute number of the elderly remains unaffected.

1103
oliyiyi 发表于 2015-10-7 12:33:59
China embarked on its historical Comprehensive Economic Reform

1104
oliyiyi 发表于 2015-10-7 12:34:34
this one-child policy was not a direct part of the reform itself.

1105
oliyiyi 发表于 2015-10-7 12:36:11
However, the motivation was still grounded in economics: to maintain a steady labor force while reducing unemployment caused by labor surplus, and to reduce the demand for natural resources to sustain economic growth (Tain, 1983)

1106
oliyiyi 发表于 2015-10-7 12:36:57
The policy is controversial both within and outside China because of the manner in which the policy has been implemented, and because of concerns about negative socio-economic consequences.

1107
oliyiyi 发表于 2015-10-7 12:38:34
These include forced abortions, and more troubling the reputed female infanticide. Despite these, the one-child policy still enjoys strong support within China.3

1108
oliyiyi 发表于 2015-10-11 07:43:54
Aging is one of the major risk factors for vascular diseases.

1109
oliyiyi 发表于 2015-10-11 07:45:01
If you’re a beginning data scientist, or want to be one, Practical Data Science with R (PDSwR) is
the place to start. If you’re already doing data science, PDSwR will fill in gaps in your knowledge
and even give you a fresh look at tools you use on a daily basis—it did for me.

1110
oliyiyi 发表于 2015-10-11 07:46:01
While there are many excellent books on statistics and modeling with R, and a few good
management books on applying data science in your organization, this book is unique in that it
combines solid technical content with practical, down-to-earth advice on how to practice the
craft. I would expect no less from Nina and John.

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