Designing a multiple state repetitive group sampling plan based on the coefficient of variation

A multiple state repetitive group sampling (MSRGS) plan is developed on the basis of the coefficient of variation (CV) of the quality characteristic which follows a normal distribution with unknown mean and variance. The optimal plan parameters of the proposed plan are solved by a nonlinear optimization model, which satisfies the given producer's risk and consumer's risk at the same time and minimizes the average sample number required for inspection. The advantages of the proposed MSRGS plan over the existing sampling plans are discussed. Finally an example is given to illustrate the proposed plan.     

A multicriteria sorting approach based on data envelopment analysis for R&D project selection problem

In this paper, multiple criteria sorting methods based on data envelopment analysis (DEA) are developed to evaluate research and development (R&D) projects. The weight intervals of the criteria are obtained from Interval Analytic Hierarchy Process and employed as the assurance region constraints of models. Based on data envelopment analysis, two threshold estimation models, and five assignment models are developed for sorting. In addition to sorting, these models also provide ranking of the projects. The developed approach and the well-known sorting method UTADIS are applied to a real case study to analyze the R&D projects proposed to a grant program executed by a government funding agency in 2009. A five level R&D project selection criteria hierarchy and an assisting point allocation guide are defined to measure and quantify the performance of the projects. In the case study, the developed methods are observed to be more stable than UTADIS.     

On Youth＇s Value Structure Roots of the Rise of Social Network Sites

青年价值结构反映了青年在价值观念变迁中现代化维度和后现代化维度中的转变程度。目前社交网站覆盖人数众多,用户以高学历、年轻化、城市分布规律化和交际现实性为主要特点。社交网站发展与青年价值结构变迁具有内在的密切关联。社交网站技术引进国内却丧失了原有的“意义图景”,说明我国青年在价值理性方面的缺失和对工具理性的追逐：接受社交网站说明“熟人社会”结构在青年社交活动中仍然延续．社交网站也能为青年实现个人成就提供可能性：社交网站馈赠型社会化模式有效改进了青年“相对被剥夺感”严重、幸福感低迷的现状,这是社交网站进一步发展壮大的功能基础。     

社交网站兴起与青年价值结构分析

青年价值结构反映了青年在价值观念变迁中现代化维度和后现代化维度中的转变程度。目前社交网站覆盖人数众多,用户以高学历、年轻化、城市分布规律化和交际现实性为主要特点。社交网站发展与青年价值结构变迁具有内在的密切关联。社交网站技术引进国内却丧失了原有的“意义图景”,说明我国青年在价值理性方面的缺失和对工具理性的追逐：接受社交网站说明“熟人社会”结构在青年社交活动中仍然延续．社交网站也能为青年实现个人成就提供可能性：社交网站馈赠型社会化模式有效改进了青年“相对被剥夺感”严重、幸福感低迷的现状,这是社交网站进一步发展壮大的功能基础。     

再论“四二一”结构:定义与研究方法

"四二一"结构是中国低生育率背景下家庭结构与代际关系的一种特殊表达,既反映了20世纪70年代以来计划生育政策广泛推行对中国家庭的深刻影响,又揭示了中国现阶段婚姻家庭乃至未来人口发展的特点与趋势。目前这一领域的研究虽然已经取得一系列的进展,但在概念界定与使用的方法上仍缺乏共识,导致研究结论的分歧和研究拓展的迟滞。在中国社会剧烈变动的形势下,"四二一"结构是研究中国的计划生育政策、独生子女问题,以及家庭结构与代际关系变动的一个良好的载体和切入点。     

不同家庭结构中的老年人主观生活评价分析——基于贵阳市调查数据的实证检验

利用贵阳市调查数据,对不同家庭结构中的老年人生活状况和生活满意度进行分析。文章假定:主干家庭中的老年人生活状况及满意度高于核心家庭,而核心家庭高于夫妇家庭和单身家庭。即:主干家庭>核心家庭>夫妇家庭>单身家庭(">"表示优于)。并从老年人对其生活状况(包括经济状况、生活照料、精神慰藉)和生活满意度的主观感受和评价来考察这一假定。结果发现:夫妇家庭中的老年人主观生活状况及满意度最高,单身老年人次之。新的次序变为:夫妇家庭>单身家庭>主干家庭>核心家庭。文章对此进行了解释。分析还发现,生活自由度可能是影响老年人主观生活评价的一个重要指标。     

家庭结构视角下新生代农民工劳动参与影响因素

农村劳动力供给特别是新生代农民工的劳动参与率是影响经济和社会发展的关键变量。运用Probit和IV Probit模型考察家庭结构对新生代农民工劳动参与率的影响及其机制发现:多代同堂的家庭结构对新生代农民工的劳动参与存在负效应。从性别看,女性新生代农民工劳动参与受家庭结构影响的程度大于男性。因此,重视新生代农民工家庭特征差异,配套采取多种措施促进新生代农民工参与市场劳动,是解决"民工荒"与"就业难"的着力点。     

The embeddedness of organizational performance: Multiple Membership Multiple Classification Models for the analysis of multilevel networks

We present a Multiple Membership Multiple Classification (MMMC) model for analysing variation in the performance of organizational sub-units embedded in a multilevel network. The model postulates that the performance of organizational sub-units varies across network levels defined in terms of: (i) direct relations between organizational sub-units; (ii) relations between organizations containing the sub-units, and (iii) cross-level relations between sub-units and organizations. We demonstrate the empirical merits of the model in an analysis of inter-hospital patient mobility within a regional community of health care organizations. In the empirical case study we develop, organizational sub-units are departments of emergency medicine (EDs) located within hospitals (organizations). Networks within and across levels are delineated in terms of patient transfer relations between EDs (lower-level, emergency transfers), hospitals (higher-level, elective transfers), and between EDs and hospitals (cross-level, non-emergency transfers). Our main analytical objective is to examine the association of these interdependent and partially nested levels of action with variation in waiting time among EDs – one of the most commonly adopted and accepted measures of ED performance. We find evidence that variation in ED waiting time is associated with various components of the multilevel network in which the EDs are embedded. Before allowing for various characteristics of EDs and the hospitals in which they are located, we find, for the null models, that most of the network variation is at the hospital level. After adding these characteristics to the model, we find that hospital capacity and ED uncertainty are significantly associated with ED waiting time. We also find that the overall variation in ED waiting time is reduced to less than a half of its estimated value from the null models, and that a greater share of the residual network variation for these models is at the ED level and cross level, rather than the hospital level. This suggests that the covariates explain some of the network variation, and shift the relative share of residual variation away from hospital networks. We discuss further extensions to the model for more general analyses of multilevel network dependencies in variables of interest for the lower level nodes of these social structures.     

潜藏在水下的冰山——《终成眷属》中的召唤结构

《终成眷属》的表层存在“爱情与偏见”的冲突。但从结构、情感两个层面分析后,我们可以从表层的冲突中发现伊瑟尔的“召唤结构”,这给我们提供了另一种审美空间,有助于更好地理解作品的主题。     

Morality rebooted: Exploring simple fixes to our moral bugs

Ethics research developed partly in response to calls from organizations to understand and solve unethical behavior. We examine two approaches to mitigating unethical behavior: (1) values-oriented approaches that broadly appeal to individuals’ preferences to be more moral, and (2) structure-oriented approaches that redesign specific incentives, tasks, and decisions to reduce temptations to cheat in the environment. This paper explores how these approaches can change behavior. We argue that integrating both approaches while avoiding incompatible strategies can reduce the risk of adverse effects that arise from taking a single approach and leverage the strengths of both approaches.