[Method of forming a multiple attrition life table and its application to the study of nuptiality among women in China].]

Trends in marital status among women in China for the period 1950-1970 and for 1981 are analyzed using the multiple decrement life table method. The results confirm those obtained with traditional methods of data analysis. It is found that over the past 30 years, Chinese women have experienced a high rate of marriage and a low divorce rate. The significant increase in age at marriage and the lowering of the death rate have affected marital status at all ages. The development of a marital status life table permits the author to estimate current numbers of women in the four marital statuses of unmarried, currently married, widowed, and divorced by age and their future likelihood of changing marital status.     

The Endowment Effect,Status Quo Bias and Loss Aversion: Rational Alternative Explanation

The endowment effect, status quo bias, and loss aversion are robust and well documented results from experimental psychology. They introduce a wedge between the prices at which one is willing to sell or buy a good. The objective of this paper is to address this wedge. We show that the presence of asymmetric information in a rational-agent framework can also account for the endowment effect, status quo bias and loss aversion without invoking psychology-based explanations proposed in the past.     

加快四川小城镇建设促进国民经济稳定增长

改革开放以来,我国的小城镇建设一直方兴未艾.四川是我国的一个人口大省,也是一个农业大省,四川小城镇的改革与发展,不仅在四川社会经济发展中具有重要的地位和作用,而且对全国的小城镇建设都具有重要意义.     

Laws of large numbers for bootstrappedU-statistics

For the bootstrapped mean, a strong law of large numbers is obtained under the assumption of finiteness of the rth moment, for some r>1, and a weak law of large numbers is obtained under the finiteness of the first moment. The results are then extended to bootstrapped U-statistics under parallel conditions. Stochastic convergence of the jackknifed estimator of the variance of a bootstrapped U-statistic is proved. The asymptotic normality of the bootstrapped pivot and the bias of the bootstrapped U-statistic are indicated.     

低温保存与低温固定——低温生物学的两个重要课题

本文讨论了低温保存的含义和现状、慢速冷却低温保存方法的研究手段、关于慢速冷却造成损伤的机理的争论、玻璃化低温保存方法、低温技术在电子显微技术中的应用、电镜样品的低温固定及低温固定快速降温速率的提高与测量等问题,并着重阐述了上海机械学院低温生物工程研究室在这些方面的研究。     

单模光纤中非均匀性内有源分子的非弹性散射

根据有源分子的等效振荡偶极子模型,利用并矢格林函数方法及场的矢量柱波函数和矢量球波函数展开,本文处理了埋入在单模光纤中一个非均匀性內有源分子的非弹性散射问题。对于非均匀性为球形及单模光纤的情况,我们得到了非弹性IIE_(11)模散射系数的解析表达式,入射与散射奇/偶模之间的耦合问题也可同时考虑。     

对《统计学》函授教学的思考

对于统计学课程的教学,以往的探讨多是以普通大学生为对象,近年来,许多成人以函授的形式参与统计学的学习,如何对他们进行统计学的教学,这是一个值得关注的问题。     

项目风险管理与合同风险结构策划

风险管理是项目管理最具创造性的任务之一。风险管理应结合项目策划一并进行 ,策划离不开风险分析 ,风险分析为策划提供决策依据 ,风险管理是项目策划的基本内容。通过案例说明从项目开始实施到项目采购、设计和施工等所有环节 ,都涉及开发合同策略 ,以确定风险水平及风险控制途径和措施     

A litter-based approach to risk assessment in developmental toxicity studies via a power family of completely monotone functions

Summary.  A new class of distributions for exchangeable binary data is proposed that originates from modelling the joint success probabilities of all orders by a power family of completely monotone functions. The distribution proposed allows flexible modelling of the dose–response relationship for both the marginal response probability and the pairwise odds ratio and is especially well suited for a litter-based approach to risk assessment. Specifically, the risk of at least one adverse response within a litter takes on a simple form under the distribution proposed and can be reduced further to a generalized linear model if a complementary log–log-link function is used. Existing distributions such as the beta–binomial or folded logistic functions have a tendency to assign too much probability to zero, leading to an underestimation of the risk that at least one foetus is affected and an overestimation of the safe dose. The distribution proposed does not suffer from this problem. With the aid of symbolic differentiation, the distribution proposed can be fitted easily and quickly via the method of scoring. The usefulness of the class of distributions proposed and its superiority over existing distributions are demonstrated in a series of examples involving developmental toxicology and teratology data.