东巴文合文研究

东巴文处于早期表词——意音文字阶段,存在为数不少的合文现象。文章以《纳西象形文字谱》为材料,在探讨东巴文合文含义的基础上,从东巴文合文构件数量、构件结构、构件位置、构件功能、构件读音五个方面对《纳西象形文字谱》里的合文进行穷尽性研究,并进行相关数据的统计与分析。     

不确定多属性决策双目标组合赋权模型研究

本文提出了灰距离熵的概念,并把灰距离熵作为区间灰数相离度的一个度量标准,建立了不确定多属性决策属性值的灰距离熵离差最大化模型。并在此基础上, 讨论了基于灰距离熵和极大熵的双目标规划组合赋权模型。从而实现了决策属性区间权重向点值权重的转化。最后并结合具体实例,验证了模型的有效性。     

Confidence intervals for assessing equivalence of two treatments with combined unilateral and bilateral data

Responses from the paired organs are generally highly correlated in bilateral studies, statistical procedures ignoring the correlation could lead to incorrect results. Note the intraclass correlation in the study of combined unilateral and bilateral outcomes; 11 confidence intervals (CIs) including 7 asymptotic CIs and 4 Bootstrap-resampling CIs for assessing the equivalence of 2 treatments are derived under Rosner''s correlated binary data model. Performance is evaluated with respect to the empirical coverage probability (ECP), the empirical coverage width (ECW) and the ratio of the mesial non-coverage probability to the non-coverage probability (RMNCP) via simulation studies. Simulation results show that (i) all CIs except for the Wald CI and the bias-corrected Bootstrap percentile CI generally produce satisfactory ECPs and hence are recommended; (ii) all CIs except for the bias-corrected Bootstrap percentile CI provide preferred RMNCPs and are more symmetrical; (iii) as the measurement of the dependence increases, the ECWs of all CIs except for the score CI and the profile likelihood CI show increasing patterns that look like linear, while there is no obvious pattern on the ECPs of all CIs except for the profile likelihood CI. A data set from an otolaryngologic study is used to illustrate the proposed methods.     

中国面临生育危机风险的三个信号: 低生育率、低生育意愿和生育赤字

我国少子老龄化趋势愈发明显,亟须提高适龄人群生育意愿以提升人口生育率。文章基于37名来自全国多地“90后”的访谈记录,利用扎根理论和fsQCA混合研究方法,在总结归纳影响生育意愿主要因素的基础上,进一步深入探究各因素间的组合影响模式。研究发现,“90后”生育意愿由经济、社会、文化三重因素共塑,组合模式又可划分为综合影响型、注重发展型、独立自主型、文化带动型四种类型,且影响生育意愿各因素间呈现经济主导、因素联动、文化正反馈三大效应,随后针对性别、城乡、婚否展开异质性分析。针对研究结果提出公共资源普惠、优化生育保障体系、分级分类采取异质生育政策、营造友好生育氛围等对策建议。     

C语言“指针”教学经验谈

在C语言的教学中,指针概念的教学一直就是C语言的教学重点和难点,指针已成为学习和掌握C语言的一大障碍.从硬件角度、图示方法及举例选题三个方面介绍了C语言指针教学中的体会.     

期货交易所管理水平最优组合赋权的模糊综合评价

以模糊综合评价法为基本出发点 ,通过选择几个主观权和若干个客观权得到一个最优组合赋权模型 ,同时提出了最优组合赋权的模糊综合评价模型 .在期货交易所管理水平的评价中 ,利用该模型既可以考虑政策、经验等主观因素的影响 ,又可以充分利用客观数据所带来的信息 ,使评价结果既符合客观实际又满足人们的主观要求     

坚持“五个结合”,实现大学生党建工作的创新

在高等学校中,学生是学校教育的主体,学生党员是学生群体中的优秀代表。加强高校学生党建工作,发挥学生党员的先锋模范作用,对高等教育的发展以及精神文明建设非常重要。研究新时期高校学生党建工作的新思路,探索党建和政治教育的新载体,对增强大学生思想政治教育工作有着十分重要的意义。     

Exact Confidence Intervals for Proportions Estimated by Group Testing with Different Group Sizes

Group testing is the process of combining individual samples and testing them as a group for the presence of an attribute. The use of such testing to estimate proportions is an important statistical tool in many applications. When samples are collected and tested in groups of different size, complications arise in the construction of exact confidence intervals. In this case, the numbers of positive groups has a multivariate distribution, and the difficulty stems from a lack of a natural ordering of the sample points. Exact two‐sided intervals such as the equal‐tail method based on maximum likelihood estimation, and those based on joint probability or likelihood ratio statistics, have been previously considered. In this paper several new estimators are developed and assessed. We show that the combined tails (or Blaker) method based on a suitable ordering statistic, is the best choice in this setting. The methods are illustrated using a study involving the infection prevalence of Myxobolus cerebralis among free‐ranging fish.     

Indicator function and complex coding for mixed fractional factorial designs

In a general fractional factorial design, the n levels of a factor are coded by the nth roots of the unity. This device allows a full generalization to mixed-level designs of the theory of the polynomial indicator function which has already been introduced for two-level designs in a joint paper with Fontana. The properties of orthogonal arrays and regular fractions are discussed.     

Interval estimation of the common mean

Brown and Cohen (1974) considered the problem of interval estimation of the common mean of two normal populations based on independent random samples. They showed that if we take the usual confidence interval using the first sample only and centre it around an appropriate combined estimate of the common mean the resulting interval would contain the true value with higher probability. They also gave a sufficient condition which such a point estimate should satisfy. Bhattacharya and Shah (1978) showed that the estimates satisfying this condition are nearly identical to the mean of the first sample. In this paper we obtain a stronger sufficient condition which is satisfied by many point estimates when the size of the second sample exceeds ten.