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Maternity or catastrophe: A study of household expenditure on maternal health care in India
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作者 Saradiya Mukherjee Aditya Singh Rakesh Chandra 《Health》 2013年第1期109-118,共10页
Using data from 60th round of the National Sample Survey, this study attempts to measure the incidence and intensity of ‘catastrophic’ maternal health care expenditure and examines its socio-economic correlates in u... Using data from 60th round of the National Sample Survey, this study attempts to measure the incidence and intensity of ‘catastrophic’ maternal health care expenditure and examines its socio-economic correlates in urban and rural areas separately. Additionally, it measures the effect of maternal health care expenditure on poverty incidence and examines the factors associated with such impoverishment due to maternal health care payments. We found that maternal health care expenditure in urban households was almost twice that of rural households. A little more than one third households suffered catastrophic payments in both urban and rural areas. Rural women from scheduled tribes (ST) had more catastrophic head counts than ST women from urban areas. On the other hand, the catastrophic head count was greater among illiterate women living in urban areas compared to those living in rural areas. After adjusting for out-of-pocket maternal health care expenditure, the poverty in urban and rural areas increased by almost equal percentage points (20% in urban areas versus 19% in rural areas). Increasing education level, higher consumption expenditure quintile and higher caste of women was associated with increasing odds of impoverishment due to maternal health care expenditure. To reduce maternal health care expenditure induced poverty, the demand-side maternal health care financing programs and policies in future should take into consideration all the costs incurred during prenatal, delivery and postnatal periods and focus not only on those women who suffered catastrophic expenditure and plunged into poverty but also those who forgo maternal health care due to their inability to pay. 展开更多
关键词 OUT-OF-POCKET Payments Maternal Health Care POVERTY nsso CATASTROPHIC EXPENDITURE
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国家速滑馆索网结构形态分析关键问题研究 被引量:8
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作者 白光波 王哲 +4 位作者 陈彬磊 朱忠义 王毅 邢珏蕙 沈莉 《钢结构(中英文)》 2020年第7期54-61,共8页
系统梳理了2022年北京冬奥会国家速滑馆索网结构形态分析中的关键问题,包括位形优化、固定边界下的形态分析和考虑弹性边界的形态控制。位形优化部分,介绍了决定索网位形关键参数的选取策略。首先基于理论双曲抛物面方程建立索网位形的... 系统梳理了2022年北京冬奥会国家速滑馆索网结构形态分析中的关键问题,包括位形优化、固定边界下的形态分析和考虑弹性边界的形态控制。位形优化部分,介绍了决定索网位形关键参数的选取策略。首先基于理论双曲抛物面方程建立索网位形的数学描述;然后证明了正交正放双曲抛物面索网每个网格的四个角点共面,该特性使屋面模块可以按照平面设计和加工,显著降低加工和安装难度,从工程实施角度提出了索网位形控制的需求。之后根据几何约束条件,提炼出决定索网位形的关键参数,并通过参数分析,综合考虑JGJ 257—2012《索结构技术规程》建议范围、环桁架受力、预应力水平、刚度与用索量等因素,分别选取承重索垂度和稳定索拱度为8.25 m和7 m,进而确定索网的目标位形。形态分析环节实现了固定边界条件下的索网形态控制。考虑边界形状、拓扑关系、预应力和屋顶重量分布等因素的共同影响,通过形态分析,使索网初始态位形相对理论抛物面最大偏差距离不超过5 mm,基本吻合双曲抛物面,同时索网水平投影为严格的正交正放网格,保证每个网格的四个角点共面。通过调节预应力水平,可以控制预应力在索包络力中所占比重和几何刚度在结构总刚度中所占比重,达到结构综合指标最优。考虑弹性边界的形态控制是索网形态分析的最终目标。首先分析了支承结构弹性变形对索网形态的影响,发现直接应用固定边界形态分析得到的索网初应变时,索网初始态位形最大偏差为502 mm,承重索和稳定索内力分别下降了11.1%和7.3%。然后通过环桁架预变形和修正索网初应变,使主受力体系初始态中的索网形态与固定边界结果一致,实现了弹性边界下的索网形态控制,同时还使环桁架和斜拉索到达预定形态。 展开更多
关键词 国家速滑馆 索网 参数分析 目标位形 形态分析 形态控制
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