Optimal cross-over designs for nonlinear mixed models using a first-order expansion

We consider the construction of optimal cross-over designs for nonlinear mixed effect models based on the first-order expansion. We show that for AB/BA designs a balanced subject allocation is optimal when the parameters depend on treatments only. For multiple period, multiple sequence designs, uniform designs are optimal among dual balanced designs under the same conditions. As a by-product, the same results hold for multivariate linear mixed models with variances depending on treatments.     

21世纪中国可持续发展面临的人口困境与对策

21世纪 ,中国将面临更加严峻的人口形势。人口数量继续增长、人口素质低、人口高龄化速度快是制约中国可持续发展的关键因素。为了给中国未来经济、社会发展创造更加适宜的人口环境 ,必须坚定不移地实行低生育率政策 ,控制人口数量过快增长 ;通过人力资本投资工程并构建人力资本投资与回报机制 ,有效地开发和利用人力资源 ;建立符合中国实际的养老保障体制     

Expanded answers to bureaucratic questions: Negotiating access to public healthcare

This article analyzes expanded responses to statistical‐epidemiological questions at a mental health outpatient service at a public hospital in Buenos Aires, Argentina. Bureaucratic questioning is a highly routine activity which supplies information to the biopolitical apparatus of the modern State. We understand that expanded answers are meaningful actions which not only serve individual, local tactics (such as raising personal concerns), but also index higher contextual levels. In this sense, resisting the constraints of a question may also imply resisting State‐defined policies of biopolitical classification and exclusion. We examine, from a discursive interactional point of view, 41 admission interviews held at the outpatient mental health care service. We observe four types of expanded answers which: (a) display competence in bureaucratic discourse; (b) move from the sphere of the public to the private; (c) deal with potential face‐threats; and (d) pre‐empt rejection. Although the former is actually an optimized way of collaboration with the biopolitical order, the latter three types can be seen as actions of resistance to classification, not only symbolically but also in material terms: resisting statistical criteria of exclusion allows clients to negotiate access to mental healthcare.     

警惕中国经济泡沫化——中国经济增长模式面临的严重挑战

改革开放以来,中国经济35年增长主要是外向型经济拉动的。但2008年国际金融危机时间,中国出台的"4万亿"投资刺激计划,改变了中国原有的经济增长模式,投资在经济增长中的作用越来越重要。同时,带来了两个结构性矛盾:一是投资中政府融资平台的崛起,深刻地改变了中国的投资结构,投资效率开始下降;二是投资拉动的经济增长模式必然依靠货币信贷释放来支撑,容易带来经济泡沫化。评论中国经济是否有泡沫化现象,可以从经济货币化指数、固定资产投资占GDP的比重、PPI和CPI的长期背离三个方面进行分析。     

生态城市建设与城郊农业功能拓展研究——兼析从化模式

建设生态城市是城市可持续发展的必然选择,基于区位优势、功能特征等因素拓展城郊农业功能在生态城市建设中具有重要作用。政策支持为城郊农业功能的拓展提供了资源和空间。在深入理解功能拓展现实需求和合理确定拓展投入思路基础上,设计合理的投入机制是提高农业功能拓展绩效的保障。从化模式成功经验的借鉴意义在于：灵活使用多种手段激励多元化投入主体,形成不同农业功能联合生产、三次产业协同发展、城乡生态共享的关系。     

Karhunen–Loeve expansion for the additive detrended Brownian motion

In this article, we obtain the Karhunen–Loeve expansion and Pythagorean type distribution identities for the additive detrended Brownian motion. As applications, the corresponding Laplace transform and small-deviation asymptotic behavior for the L₂ norm are given.     

论二外拓展教学与综合人文素质的培养

本文对二外课程教学与培养学生的综合人文素质相关问题加以论述。     

韩国城市空间拓展特点及对中国城市化的启示

研究韩国城市空间拓展的模式、特点以及不足,综合分析中国城市化的现状与趋势,在中国现有城市化发展的基础上,结合韩国城市化发展的经验和教训,构建中国未来城市化战略和城市空间设计,力求为提升中国城市发展水平提供借鉴。     

我国老年教育的发展及特征

随着人口老龄化的加剧,老年教育越来越成为世界共同关注的课题。运用教育社会学研究教育发展的两个维度:数量、质量维度对 20世纪 80年代以来我国老年教育的发展进行梳理和描述,得出我国老年教育发展的特征和趋势为:办学由群众行为向政府行为转化;老年教育由大中城市向农村延伸;课程由颐养娱乐型向应用技能型和自我发展型扩展;教育形式和教育手段将呈现多样化,不断引进新技术和新观念。     

论礼数与礼意的统一

在具体的礼典仪式中,无论是礼器,还是礼的仪节,都有一定数的规定,它是构成践礼活动必不可少的要素。任何单方面强调礼数的优先性,或礼意的重要性的观点,都是片面的。践礼主体的人,作为礼仪规则的表现者,他与礼的数度之间是相辅相成的,礼数是否得当,直接关系到礼的完成。只有行礼者的礼数与其名位相符、与其表现的礼意相符,才能恰当地揭示礼的形式及其内容之间的显现与被显现关系。