A process capability index with reliable confidence intervals

A well-know process capability index is slightly modified in this article to provide a new measure of process capability which takes account of the process location and variability, and for which point estimator and confidence intervals do exist that are insensitive to departures from the assumption of normal variability. Two examples of applications based on real data are presented.     

标准化政策对主食产业化的影响

实现主食产业化发展，实行产品的标准化是关键。以豪特林（Hotelling）线形选址模型和塞洛普（Salop）的圆周模型为基础，根据具体情况进行修改后建立一个三阶段的博弈模型讨论主食企业和政府的行为问题。     

Reliability of global sensitivity indices

Uncertainty and sensitivity analysis is an essential ingredient of model development and applications. For many uncertainty and sensitivity analysis techniques, sensitivity indices are calculated based on a relatively large sample to measure the importance of parameters in their contributions to uncertainties in model outputs. To statistically compare their importance, it is necessary that uncertainty and sensitivity analysis techniques provide standard errors of estimated sensitivity indices. In this paper, a delta method is used to analytically approximate standard errors of estimated sensitivity indices for a popular sensitivity analysis method, the Fourier amplitude sensitivity test (FAST). Standard errors estimated based on the delta method were compared with those estimated based on 20 sample replicates. We found that the delta method can provide a good approximation for the standard errors of both first-order and higher-order sensitivity indices. Finally, based on the standard error approximation, we also proposed a method to determine a minimum sample size to achieve the desired estimation precision for a specified sensitivity index. The standard error estimation method presented in this paper can make the FAST analysis computationally much more efficient for complex models.     

正当程序视野下国际体育兴奋剂处罚体系的发展

伴随着国际体育运动商业化的进程,兴奋剂成为困扰国际体育领域的重大问题。为减轻兴奋剂处罚体系多重性给运动员造成的负担,在国际奥委会的推动下,国际社会正进行着兴奋剂处罚体系统一化的努力。在这一进程中,应关注对运动员正当程序利益的保护,发挥国际仲裁院对个案的裁决及评价作用,推动各体育组织间的配合,使兴奋剂处罚体系更趋合理及法律化。     

On the improvement of one-sided S control charts

The most common charting procedure used for monitoring the variance of the distribution of a quality characteristic is the S control chart. As a Shewhart-type control chart, it is relatively insensitive in the quick detection of small and moderate shifts in process variance. The performance of the S chart can be improved by supplementing it with runs rules or by varying the sample size and the sampling interval. In this work, we introduce and study one-sided adaptive S control charts, supplemented or not with one powerful runs rule, for detecting increases or decreases in process variation. The properties of the proposed control schemes are obtained by using a Markov chain approach. Furthermore, a practical guidance for the choice of the most suitable control scheme is also provided.     

"双休制"对城市在业者休闲生活质量的影响

文章是以1995年我国实行周五天工作制后所进行的城市居民时间分配状况的一次重要调查获得的数据为依据,对城市在业者的休闲生活进行的研究.调查表明,"双休制"的实行给城市在业者带来了巨大的生活实惠和休闲生活质量收益.但同时表明,受传统的家庭内性别分工模式的影响,男女从业者的受益程度是不同的.此外,社会弱势群体的受益程度也偏低,在其体闲时间数量增加的同时,休闲生活质量的提高却相对滞后.     

论诉讼中的"二元"证明标准

诉讼中的证明标准问题是证据法学研究中的一个重要问题.近年来,一些学者从比较研究的角度提出在我国证据法中移植英美法上的"二元"证明标准.本文在理论和实践两个层次分析的基础上提出反驳理由,并指出,这种移植既无必要性,也缺乏可操作性.     

论我国城市贫困化与城市居民最低生活保障制度

最低生活保障制度作为城市社会保障体系的“最后一道安全网” ,是我国城市社会保障体系的重要一环 ,对促进经济的发展 ,维护社会的稳定起着举足轻重的作用。但是 ,我国建立城市居民最低生活保障制度的时间较晚 ,还有许多不足之处等待改进和完善     

文献资源建设中的剔除环节──文献资源建设理论与实践研讨之二

剔除不仅具有清除陈旧失效文献、减轻工作人员负担、减少书库压力、缓解空间紧张的作用，在文献资源建设中还能发挥净化、优化功能；活化功能；控制功能；反馈功能；检验功能；复苏功能。这就使得剔除成为文献资源建设中不可缺少的重要环节。剔除没有绝对的统一的标准，一般只能以文献的内容、外形、文献的年龄以及使用情况为依据，综合归纳拟定出适用于自己馆的文献剔除标准和范围。剔除的方法多种多样，最好将几种方法结合使用，取长补短，效果会更好些。     

基团电负性和烷基衍生物的挥发标准焓(英文)

本文使用作者自己提出的基团电负性概念,建立了一个烷基衍生物的挥发焓与基团电负性的关系 △H°_u(RX)= △H°_u(CH_3X)+(1.77n~(1/t) -1.77)X_g+3.76n-7.16式中 △H°_u是标准挥发焓 X=OH、CHO、SH、SCH_3、Cl、Br、CO_2H和I、X_g是X基团的基团电负性。