Simplified Jackknife Variance Estimates for Fuzzy Measures of Multidimensional Poverty

In this paper, we present a practical methodology for variance estimation for multi‐dimensional measures of poverty and deprivation of households and individuals, derived from sample surveys with complex designs and fairly large sample sizes. The measures considered are based on fuzzy representation of individuals' propensity to deprivation in monetary and diverse non‐monetary dimensions. We believe this to be the first original contribution for estimating standard errors for such fuzzy poverty measures. The second objective is to describe and numerically illustrate computational procedures and difficulties in producing reliable and robust estimates of sampling error for such complex statistics. We attempt to identify some of these problems and provide solutions in the context of actual situations. A detailed application based on European Union Statistics on Income and Living Conditions data for 19 NUTS2 regions in Spain is provided.     

重症患者CT增强检查的护理分析

目的探讨在重症患者CT增强检查过程中加强护理干预的效果。方法选取2013年1月至2014年1月我院行CT增强检查的128例重症患者的临床资料进行归纳整理,分析检查过程中患者的不良反应发生情况及CT增强检查结果。结果除1例患者因气喘、憋闷,未能完成增强检查外,127例患者均顺利完成增强检查。结论在重症患者CT增强检查的过程中加强护理干预,可有效预防意外事故的发生,保证检查顺利进行。     

Krazy Kimmy's: A Case in Fraud Examination

This two‐part case allows for maximum student engagement through preparation, in‐class discussion, and through a Part B case that is part of the Teaching Note. Through this case, students work to identify possible fraud schemes, plan an investigation, and perform horizontal analysis calculations. Students will learn about the concept of ethical hacking, red flag identification, internal control weaknesses, and investigation considerations for fraud schemes. Further, in‐class planning for next steps and investigation can occur, providing an opportunity for group work and in‐depth learning. This case offers flexibility for instructors in that it can be covered over one class or multiple classes, or can be assigned as an independent or group assignment. This teaching note provides an overview of the case along with guidance for teaching this case.     

三维价值链视阈下科技成果转化知识供给体系研究

科技成果转化知识供给是指知识沿价值链不同维度，经过耦合与交流，形成知识供给体系，对其探索可推动知识的精准供给和有序流动。基于全程价值链视角，从3个维度剖析科技成果转化知识供给体系的特征与机理。在纵向维度中，知识供给纵贯创意→设计→实验→中试→量产→销售等价值环节，并经历知识分化、加工、增值、包装与应用；在横向维度中，科技成果转化知识供给内含于各价值模块中，具有半自律化特征；在网络维度中，知识供给嵌于价值网络中，具有开放组合性、跨领域交叉性与跨疆界性。     

行政审批改革与制度性交易成本——基于效率评价的视角

制度性交易成本是经济主体为遵守制度规定而产生的非生产性成本,行政审批改革通过提高经营效率、节约时间成本、降低资金成本和促进行业竞争四种途径降低制度性交易成本。本文通过对我国地市级面板数据的实证分析后发现,行政审批改革可以有效降低地区制度性交易成本;当行政审批改革发生在营商环境相对较差的中西部城市、距离省会城市较近的城市以及当城市获得法律支撑时,能够更显著地降低当地制度性交易成本。本文据此提出如下政策建议:深化行政审批改革,减少不必要的审批事项;健全改革激励机制,确保政策的贯彻与落实;通过机构设置、法律规定、权责划分等进行配套措施改革。     

现代治理视域下行政审批机构改革研究

推进行政审批机构改革是新时代完善现代国家治理体系和提升现代国家治理能力的必然要求。行政审批局改革模式的现代治理意涵在于优化配置制度建设主体要素以及重构革新治理主体组织结构,并在制度依据、机制运行和治理效能三个层面建构起改革运行机理。尽管通过集中审批权限、实现"一枚印章管审批"大力提升了审批效率,但行政审批局模式依然面临有悖"职权法定"、纵横协调不足、制度建设不充分和资源配置不合理的四重困境。现代治理视域下,应从树立科学合理的审批改革理念、完善行政审批机构改革的顶层设计以及创新行政审批局具体工作模式等方面不断完善和深化行政审批机构改革。     

Optimal model averaging forecasting in high-dimensional survival analysis

This article considers ultrahigh-dimensional forecasting problems with survival response variables. We propose a two-step model averaging procedure for improving the forecasting accuracy of the true conditional mean of a survival response variable. The first step is to construct a class of candidate models, each with low-dimensional covariates. For this, a feature screening procedure is developed to separate the active and inactive predictors through a marginal Buckley–James index, and to group covariates with a similar index size together to form regression models with survival response variables. The proposed screening method can select active predictors under covariate-dependent censoring, and enjoys sure screening consistency under mild regularity conditions. The second step is to find the optimal model weights for averaging by adapting a delete-one cross-validation criterion, without the standard constraint that the weights sum to one. The theoretical results show that the delete-one cross-validation criterion achieves the lowest possible forecasting loss asymptotically. Numerical studies demonstrate the superior performance of the proposed variable screening and model averaging procedures over existing methods.     

基于预约策略的医院CT设备使用优化研究

预约检查是对有限的医疗检查资源的一种调度优化。以攀枝花市A医院CT检查为例,通过实地调研,统计CT设备的服务能力,门诊患者,住院患者和急诊患者的平均到达率,接受患者的单位检查收益和拒绝患者的单位检查损失。通过调整预约策略使有限的资源设备产生更多的收益,并运用仿真模拟不同预约策略下的收益效果。研究结果对医院重要设备的预约使用提供了一定参考价值。     

跨文化背景下商业广告设计的视觉元素关注度研究——以餐饮类平面广告为例

本文以餐饮类平面广告为实验材料,研究了中国和美国被试者对平面广告中的图形、色彩、文字、编排及构图等视觉元素的关注度。本研究从文化认知理论出发,以文化认知差异为前提,探寻了东西方族群对商业广告中出现的视觉信息的不同处理方式。以商业广告中视觉设计的原则为标准,解构了平面广告设计中的视觉构成元素并进行一一比较,得出商业平面广告设计中中美两国被试者的视觉元素关注度差异。最终获取了各种视觉元素的评估结果和相对权重,形成了商业图形广告设计元素关注度的先后顺序。这一实验结果对跨文化认知心理理论在跨国广告设计中的应用有借鉴和启发作用,可以为跨国公司和设计师提供技术指导,设计出更符合消费者需求的商业广告。     

一种利用均匀圆阵对称特性的近场源酉变换估计算法

针对现有均匀圆阵的近场源三维参数估计算法运算量大的缺点，提出了一种基于均匀圆阵对称特性的近场源酉变换估计算法。该算法利用均匀圆阵对称特性将阵列导向矢量进行酉变换和对角化分离处理，消除距离参数，把三维搜索问题化简为二维搜索问题，同时把复值方向矢量转化为实值方向矢量。计算机仿真结果显示,所提算法估计性能优于相关序列降维估计方法，与三维多重信号分类算法性能相当，且通过矩阵分离降维和实值化处理，减少了运算量，有利于工程实时处理。