公共卫生支出、健康结果与卫生投入政策——基于189个国家和地区的面板门槛分析（1995—2011年）

利用189个国家和地区1995—2011年的数据实证检验公共卫生支出规模对一个国家的健康结果（婴儿死亡率和出生时的平均期望寿命）的影响，结果表明，公共卫生支出占GDP的比重对婴儿死亡率和出生时的平均期望寿命的影响具有门槛效应，门槛值分别位于1.9%和6.62%。分段回归结果显示，公共卫生支出占GDP的比重低于1.9%时，公共卫生投入对出生时的平均期望寿命没有显著影响，对婴儿死亡率的影响较弱；超过1.9%后，公共卫生投入的规模效应开始体现，对健康结果指标的影响均显著增强；超过6.62%后，公共卫生投入对婴儿死亡率的影响不再显著，对出生时平均期望寿命的弹性系数不再变化，单位边际贡献不再增加。中国当前政府卫生投入规模仍然较低，需要继续增大公共资金投入、降低个人卫生支出比重。     

Cross-Sectional and Longitudinal Associations of Categories of Physical Activities with Dimensions of Subjective Well-Being in Taiwanese Older Adults

Physical activity takes place in different social contexts such as leisure, home, and work. However, the differential associations of these distinct categories of activity with aspects of well-being have rarely been investigated. This study was designed to estimate independent associations of (a) leisure-time, (b) domestic and (c) work-related physical activities with subjective well-being in older adults. A cross-sectional survey was conducted in 2009 with 2,295 community-dwelling older adults aged 65 or older in Kaohsiung, Taiwan. Among them, 307 participants were selected for a 3-year follow-up study in 2012. The results based on cross-sectional and longitudinal analyses demonstrated that leisure-time physical activity, after multivariate adjustment, was positively associated with five dimensions of well-being, including ‘physical’, ‘psychological’, ‘independence’, ‘learning and growth’, and ‘social’ well-being. Household physical activity was positively associated only with ‘social’ well-being. Occupational physical activity was not related to any dimension of well-being. The study suggests that associations between physical activity and dimensions of subjective well-being during later life are dependent on the social context in which the activity takes place. This study indicates that physical activity taken as leisure has greatest potential to enhance the quality of life of older adults.     

基于任务驱动模式的模拟导游课程教学

任务驱动教学模式能引导学生围绕任务进行探索学习,学生在完成任务的过程中掌握知识、培养能力、训练创新思维方面效果明显,符合模拟导游课程特点.探讨了任务驱动教学模式在模拟导游教学中的实践前提、具体措施及实践意义.     

“Organizing Creativity: Enabling Creative Output,Process, and Organizing Practices”

How individuals can exercise creativity in collectivities is unclear. We thus need to more thoroughly investigate the ‘black box’ of organizational creativity. Future research should consider creativity in a variety of organizations, rather than just those that are known for creative outputs or practices. In addition, we need to examine what I call everyday, relational, and proto‐institutional forms of organizational creativity. Intra‐ and inter‐organizational aspects can enhance or depress such organizational creativity: (1) within the organization’s boundary: internal interactions among organizational members and (2) outside the organization’s boundary: the surrounding organizational environment or field, which include competing or supporting organizations, other organizational actors, and the state. These two aspects pose dilemmas about how to organize that can constrain or enhance organizational creativity. In addressing these dilemmas, organizations must mediate between under‐ and over‐organizing extremes. Organizations can enable creativity by incorporating changing interests and conditions. Organizations can eschew convention, increase rank‐and‐file involvement with corresponding authority, tolerate ambiguity and deviance, encourage improvisation, and support members’ diverse experiences and perspectives.     

Symmetrical design for symmetrical global sensitivity analysis of model output

Symmetrical global sensitivity analysis (SGSA) can help practitioners focusing on the symmetrical terms of inputs whose uncertainties have an impact on the model output, which allows reducing the complexity of the model. However, there remains the challenging problem of finding an efficient method to get symmetrical global sensitivity indices (SGSI) when the functional form of the symmetrical terms is unknown, including numerical and non-parametric situations. In this study, we propose a novel sampling plan, called symmetrical design, for SGSA. As a preliminary experiment for model feature extracting, such plan offers the virtue of run-size economy due to its closure respective to the given group. Using the design, we give estimation methods of SGSI as well as their asymptotic properties respectively for numerical model and non-parametrical model directly by the model outputs, and further propose a significance test for SGSI in non-parametric situation. A case study for a benchmark of GSA and a real data analysis show the effectiveness of the proposed design.     

Interval-valued data regression using partial linear model

Semi-parametric modelling of interval-valued data is of great practical importance, as exampled by applications in economic and financial data analysis. We propose a flexible semi-parametric modelling of interval-valued data by integrating the partial linear regression model based on the Center & Range method, and investigate its estimation procedure. Furthermore, we introduce a test statistic that allows one to decide between a parametric linear model and a semi-parametric model, and approximate its null asymptotic distribution based on wild Bootstrap method to obtain the critical values. Extensive simulation studies are carried out to evaluate the performance of the proposed methodology and the new test. Moreover, several empirical data sets are analysed to document its practical applications.     

英国脱欧对中英贸易的影响分析

英国公投脱欧的决定,是由英国与欧盟长久以来的政治分歧与经济发展受限等原因,以及移民负担过重这一导火索共同推动的。对英国与欧盟的贸易关系进行分析,发现英国在欧盟中占据重要的贸易地位,与欧盟进出口贸易关系密切。对英国与中国的贸易现状进行分析,发现英国与中国的贸易发展良好,但贸易结合度不高。英国脱欧后,不再享有作为欧盟成员国的优惠贸易条件,可能产生中英进出口贸易额增多、贸易规模扩大、中英贸易顺差减小以及中英贸易政策出现新格局等影响。     

比较优势动态递减概率模型及检验

在比较优势的持续时间是随机变量的条件下,文章运用不确定性数学方法和规范方法,推出了比较优势递减定理,认为比较优势会随着时间增加而递减,具有发散效应,即比较优势不会被锁定.推出的比较优势“无记忆性”定理表明,各国遵循比较优势发展国际贸易是正确的,国际贸易会让各个国家自动寻找到适合本国的比较优势.通过定义比较优势逆转概率,运用实证方法进行研究,研究表明比较优势基本符合比较优势递减定理和“无记忆性”定理内容,认为中国传统劳动密集型优势在逐渐减小,产业结构调整非常成功,逐渐拥有资本密集型优势和技术密集型优势,产业结构越来越合理.     

基于互联网金融视角的网络信用风险传导机制研究

随着我国互联网金融的蓬勃兴起,网络信用风险亦逐渐受到重视.文章基于互联网金融的视角,对网络信用风险进行了定义与分类,并建立了互联网金融用户与互联网金融机构的委托—代理模型、博弈模型等对网络信用风险传导机制进行了分析;对中国人民银行下属公司建立网络金融征信系统、阿里巴巴支付宝的信用评级体系、阿里小贷与京东白条的网络信用风险进行了案例分析;针对互联网金融网络信用风险的防范机制提出了进一步完善中国人民银行网络征信系统、网络信用评级系统的升级与完善、相关法律法规的出台并践行、信用担保建设、网络技术保障等相关政策建议.     

Smoke over Taihang Mountains

正~~