Simultaneous confidence interval construction for many-to-one comparisons of proportion differences based on correlated paired data

In some medical researches such as ophthalmological, orthopaedic and otolaryngologic studies, it is often of interest to compare multiple groups with a control using data collected from paired organs of patients. The major difficulty in performing the data analysis is to adjust the multiplicity between the comparison of multiple groups, and the correlation within the same patient''s paired organs. In this article, we construct asymptotic simultaneous confidence intervals (SCIs) for many-to-one comparisons of proportion differences adjusting for multiplicity and the correlation. The coverage probabilities and widths of the proposed CIs are evaluated by Monte Carlo simulation studies. The methods are illustrated by a real data example.     

苗族生命意识衍生的医药逻辑诠释——以东部支系(湘西方言)苗族为例

医学人类学的研究目标,是揭示潜藏在人类医药知识体系中“医行为”与“药行为”之间的内在联结,并寻求对医药现象的文化注解,而且,这一注解过程本身是完成医学人类学理论建构的重要环节。但是,这一过程的完成却离不开对相关民族生命意识的探讨。因为,特定民族的医药知识体系是该民族生命意识“锁定”下的文化建构。本文拟对东部支系苗族的医药个案以及在其语言、亲属称谓、宗教仪式等所表征的生命意识之注解为例,试图展开对苗族生命意识衍生的医药逻辑之理性说明。     

农村居民收入增长和分配差距的显著性测定

农村居民收入增长和分配差距的显著性测定马恒运随着我国农村经济的发展,农民的收入水平迅速提高,同时也出现了收入分配差距扩大的现象,这一问题已引起社会各界的高度关注,许多专家学者对这一现象进行了大量的研究。本文就当前对这一问题研究的现状,探讨如何描述收入...     

Edge-disjoint spanning trees and the number of maximum state circles of a graph

Motivated by the connection with the genus of unoriented alternating links, Jin et al. (Acta Math Appl Sin Engl Ser, 2015) introduced the number of maximum state circles of a plane graph G, denoted by \(s_{\max }(G)\), and proved that \(s_{\max }(G)=\max \{e(H)+2c(H)-v(H)|\) H is a spanning subgraph of \(G\}\), where e(H), c(H) and v(H) denote the size, the number of connected components and the order of H, respectively. In this paper, we show that for any (not necessarily planar) graph G, \(s_{\max }(G)\) can be achieved by the spanning subgraph H of G whose each connected component is a maximal subgraph of G with two edge-disjoint spanning trees. Such a spanning subgraph is proved to be unique and we present a polynomial-time algorithm to find such a spanning subgraph for any graph G.     

资产价格波动与中国金融稳定发展

资产价格与金融市场稳定性之间存在着很强的相关性,资产价格波动会对一国金融机构带来诸多内部风险的隐患,如资产价格的上涨吸引了相当的信贷资金流入等。在不断开放及提高金融体系效率的前提下,如何应对资产价格的波动,是维护中国金融体系安全与稳定的一个关键问题。在考虑资产价格波动对金融稳定的传导过程中,不仅信用水平是重要的,而且未来信用水平的不确定性也是重要的,我们可以从资产价格波动引发金融不稳定的渠道和原因方面来分析资产价格波动对金融不稳定的影响。当前中国的资产价格波动表现得更为明显和剧烈,这将直接危及金融市场的稳定与经济发展。综合运用各方面政策以防范和化解危机,进一步完善信用体系,加强对金融工具的管理,将有利于中国金融体系的稳健良好运行。     

民族地区汉族流动人口从业分布及其对民族关系的重要影响 ——以青海省海南藏族自治州Y县为例

改革开放以来,大量汉族流动人口向西部民族地区流动,促进了地区间和民族间的交往、交流、交融。从业活动是流动人口的主要流动内容,从业分布情况和特点,反映出流动人口与当地居民之间的交往和融入程度。民族地区汉族流动人口从业分布,是汉族流动人口与当地少数民族居民之间关系的折射,对于民族关系具有重要的影响。本文通过在青海省海南藏族自治州Y县调研,了解汉族流动人口从业分布情况,深入分析汉族流动人口从业分布特点及其对民族关系的重要影响。     

The “ugly” face of social investment? The politics of childcare in Central and Eastern Europe

In this article, we aim to understand the development dynamics of a specific area of social investment (SI), that is, childcare policies, in the context of postcommunist politics and the recent right-wing turn that took place in the Czech Republic, Hungary, and Poland. This article identifies varieties of channels for promoting SI. First, in taking the perspective of the “mixed economy of welfare,” we argue that attempts made to introduce elements of SI to the childcare policies involved various leading roles available for either the private sector or state/public domain. Second, it is important to distinguish between implicit/unintended and explicit/intended projects both in relation to cases in which SI strategy is applied via marketization/privatization and when it involves a government-led project. Third, we take into account the politics of SI implementation that might involve applying certain principles central to policy concepts (such as “investment”) in justifying policy instruments incompatible with original ideas. Although arguments about SI have been extensively used by Eastern European leaders, their goal has been to justify welfare reforms that were implicitly or explicitly directed towards the middle class while excluding the “nondeserving” often based on ethnic identity. We characterize Poland as a case of “implicit marketization,” the Czech Republic as a case of “explicit privatization,” and the Hungarian version of SI as a case of “explicit public dualization.” In this, we show that in some cases, the implementation of SI approaches by right-wing populist parties might rear its “ugly” head.     

Locally efficient semiparametric estimators for a class of Poisson models with measurement error

The presence of measurement error may cause bias in parameter estimation and can lead to incorrect conclusions in data analyses. Despite a large body of literature on general measurement error problems, relatively few works exist to handle Poisson models. In this article we thoroughly study Poisson models with errors in covariates and propose consistent and locally efficient semiparametric estimators. We assess the finite sample performance of the estimators through extensive simulation studies and illustrate the proposed methodologies by analyzing data from the Stroke Recovery in Underserved Populations Study. The Canadian Journal of Statistics 47: 157–181; 2019 © 2019 Statistical Society of Canada     

公园城市与城市品牌创建:缘起、内涵及国际经验借鉴

公园城市是我国城市发展中的一个新概念,是对城市生态价值的凸显,是“绿色、协调、创新、开放、共享”发展理念在城市层面的体现。在后工业化时代,城市生态文明建设成为城市可持续发展的重要途径。首尔是韩国的政治、经济、科技、教育和文化中心,是世界人口密度极高的城市之一。在城市现代化和国际化进程中,首尔构建起的城市品牌导入、组织、联动、演进和实施的城市营销组合,快速有序地建立起了首尔生态、绿色、现代的城市品牌和城市形象,具体做法对我国的城市建设和营销具有启示意义。     

网络人际传播及其对网民知行特征的影响

网络平台包含着大众传播、群体传播、组织传播、人际传播等多种传播形式。网络交流沟通类应用形式的出现集中代表了“面对面”人际传播方式在网络世界中的移植和复制。网络人际传播应用是互联网介入真实生活的重要渠道．这种方式正深刻改变着现实中人的思维特征和行为模式,集中呈现出“思维碎片化”、“信息自我暴露”、“时间自由选择”、“关注议题公共性”等一系列新变化。