Educational gradient of health in rural China

The aim of this paper is to examine whether and how rural residents’ educational attainment is associated with their self-rated health in China. Taking advantage of the National Exercise Facility Survey that was collected between December 2015 and March 2016, we find that educational attainment has a significant and positive correlation with self-rated health, net of the effects of age, gender, and geographical region. This correlation is mediated by factors such as perceived importance of exercise and healthy lifestyle. Relatively, people’s cognitive knowledge about health-related information and material resource access fail to play a significant mediating role. The findings highlight the non-material and non-cognitive attributes of educational attainment in shaping the gradient of health in the rural setting of China. Interventions that expand formal education to the mass and optimize teaching contents may offer an effective means to balance the health gradient.     

借鉴国际经验打造我国世界级首都经济圈

国际首都经济圈均先经历极化效应后实现扩散效应,最终在一定区域内形成首都圈经济,通常由服务经济、总部经济、知识经济、绿色经济、园区经济、临轨经济、临空经济和临港经济等八大经济形态组成。通过深入研究伦敦、巴黎、东京和首尔四大国际性首都经济圈的演化路径及经验,定性与定量相结合比较八大经济形态发展态势,明确北京首都经济圈发展差距,提出实现首都经济结构发展升级必须依赖推动京津冀协同发展,建立全域性的首都圈经济。     

Tail asymptotic of discounted aggregate claims with compound dependence under risky investment

This paper considers the tail asymptotic of discounted aggregate claims with compound dependence under risky investment. The price of risky investment is modeled by a geometric Lévy process, while claims are modeled by a one-sided linear process whose innovations further obeying a so-called upper tail asymptotic independence. When the innovations are heavy tailed, we derive some uniform asymptotic formulas. The results show that the linear dependence has significant impact on the tail asymptotic of discounted aggregate claims but the upper tail asymptotic independence is negligible.     

共享金融产业模式及其价值实现路径研究

共享金融模式具有缓解传统金融机构“流动性”困境以及发展普惠金融的作用,但存在监管滞后及不公平竞争等问题。需要从创新监管手段、开展行业自律,以及构建共享产业信用体系等方面入手,以共同推动共享金融模式的健康发展。     

Affiliation networks with an increasing degree sequence

Affiliation network is one kind of two-mode social network with two different sets of nodes (namely, a set of actors and a set of social events) and edges representing the affiliation of the actors with the social events. Although a number of statistical models are proposed to analyze affiliation networks, the asymptotic behaviors of the estimator are still unknown or have not been properly explored. In this article, we study an affiliation model with the degree sequence as the exclusively natural sufficient statistic in the exponential family distributions. We establish the uniform consistency and asymptotic normality of the maximum likelihood estimator when the numbers of actors and events both go to infinity. Simulation studies and a real data example demonstrate our theoretical results.     

政治智慧与中国民族确认政策

政治智慧源于人们对社会历史和文化传统的深刻认知,集中体现在社会组织的建构、权力系统的运行和政权组织的维系.在施政过程中彰显政治智慧,有利于国家强盛、社会稳定、民族和谐、文化昌明和民众幸福.新中国的民族识别、民族区域自治制度的建立以及相关民族政策的实施,超越了“原生论”和“建构论”的范式,在社会实践过程中生成以确认民族身份和民族地位为核心精神的政策和理论,体现了正义性、公平性、合理性的原则,以民族大义和人文情怀凝聚人心并赢得民心.当前,面对错综复杂的世界局势,有必要基于中国民族“确认论”的正确方向,以政治智慧明察关于中国民族政策的不同认知、不同视角、不同立场和不同动机,遵循多民族共生的文化法则,确认中国各民族不只是“作为问题而存在”,完善权益、责任、义务并重而适应当今世界发展趋势的民族政策,构筑中华民族复兴的文化根基.     

Fibonacci helps to evacuate from a convex region in a grid network

This study considers an evacuation problem where the evacuees try to escape to the boundary of an affected area, which is convex, and a grid network is embedded in the area. The boundary is unknown to the evacuees and we propose an online evacuation strategy based on the Fibonacci sequence. This strategy is proved to have a competitive ratio of 19.5, which is better than the best previously reported result of 21.     

老龄社会背景下我国城市的政治传播研究

在我国的城市已经进入老龄化社会的大背景下,老年人群体在城市的社会稳定和经济发展中的重要性日益体现出来了.要想充分发挥城市老年人在这两个方面的积极作用,不但要确保这一群体思想政治状况的稳定,而且要切实提高他们社会参与的积极性和主动性.无疑,政治传播在这方面应当承担起不可推卸的责任和义务.鉴于城市老年人群体基本上是在社区的范围内生活和活动,就必须做好社区政治传播在社区层面的工作,促使城市老年人以积极健康的心态融入到社会之中,这也有助于提升他们的生活质量.