Estimation of location extremes within general families of scale mixtures

In this paper, we study the estimation of the minimum and maximum location parameters, respectively, representing the minimum guaranteed lifetime of series and parallel systems of components, within a general class of scale mixtures. The conditional or underlying distribution has only the primary restriction of being a location-scale family with positive support. The mixing distribution is also quite general in that we only assume that it has positive support and finite second moment. For demonstrative purposes several special cases are highlighted such as the gamma, inverse-Gaussian, and discrete mixture. Various estimators, including bootstrap bias corrected estimators, are compared with respect to both mean-squared-error and Pitman's measure of closeness.     

江南古镇商业化倾向及其可持续发展对策——以浙北三镇为例

江南水乡古镇旅游业发展20多年以来,商业化现象日益严重,古镇沿街充斥着服务旅游者的各色同质化的商铺和商品,不仅冲淡古镇原真景观特征,形成古镇因利趋同格局,而且改变了居民生活方式并成为重要的生活基础,直接干扰居民日常生活,破坏古镇整体人文生态系统的和谐,破坏古镇原有自然风貌和景观环境。立足于古镇原真性保护,在商业化快速发展的过程中政府应淡出商业利益,严格控制商业发展;拓展和营造多样化社区参与旅游的方式和途径,调整利益分配体制,建立行业利益平衡机制;鼓励和发展传统手工艺,形成旅游体验与民间非物质文化遗产保护双赢格局。     

孔子学院的发展现状、问题及趋势

孔子学院是以教授汉语和传播中国文化为宗旨的非营利的公益机构，是海外朋友学习汉语了解中国的窗口，也是学习借鉴不同文化、促进多元文化交流发展而构建和谐世界的平台。作为汉语国际推广的龙头产品，孔子学院的建设已经初具规模，发展的势头引人瞩目。本文谨就孔子学院的发展现状、存在问题以及未来的趋势作一概括性的阐述和分析。     

科技英语词汇的特色

论述了科技英语词汇的三大组成部分——普通词汇、次技术词汇及技术词汇以及三大组成部分词汇的构成与使用特色,从而为理解科技英语词汇及破译新词汇提供了有效的解决方法。     

当代中国文学思潮的特点与模式

文学思潮是一个时代的文学创作潮流中所表现出来的那个社会的时代精神和社会风尚,以及那个时代起主导作用的文学创作的理论和方法。文学思潮有以下几个特点一、深层性;二、理论性;三、群体性;四、时段性;五、实践性。对于划分和命名文学思潮,应该尽可能地宽容。然而,宽容并不是没有原则。当代中国文坛独特的结构和制度,决定了当代文学思潮的特点。主要表现在一、文学理论和创作极度密切的关系;二、文学思潮少有自发产生的,基本上是自觉的、自上而下提倡的;三、由于基本是自觉的,所以是理性的。     

共同语和标准语——对普通话定义的思考

本文从普通话的定义出发 ,从“共同语”和“标准语”两个方面对普通话加以论述 ,并指出普通话不同的语域功能。     

词汇研究新趋势与英汉词汇对比研究的方法和内容

经过100多年的演变和发展,现代语言学研究取得了丰硕的成果,对词汇研究产生了巨大的影响。为适应词汇研究的新趋势,现代英汉词汇对比研究应突破传统的窠臼,找准确有可比性的研究对象,在理论和方法上显示现代哲学、现代语言学、现代语义学和数理语言学的特色。     

Practical procedures to deal with common support problems in matching estimation

This paper assesses the performance of common estimators adjusting for differences in covariates, such as matching and regression, when faced with the so-called common support problems. It also shows how different procedures suggested in the literature affect the properties of such estimators. Based on an empirical Monte Carlo simulation design, a lack of common support is found to increase the root-mean-squared error of all investigated parametric and semiparametric estimators. Dropping observations that are off support usually improves their performance, although the magnitude of the improvement depends on the particular method used.     

当代环境文化建设的理论变革及其发展趋势

人类的环境文化表征着人与自然之间相互关系变迁的整个过程。面对近现代以来被扭曲和异化的环境文化,当代环境文化正在进行理论变革。必须全面推进可持续发展战略,转变工业生产方式、经济增长模式和人们生活方式,从而建立起人与自然协同进化、促进环境公平和实现生态现代化的当代新型环境文化。     

The Common Assessment Framework form 9 years on: a creative process

Legislation within England states that local authorities should provide services for all those families in need. However, research has identified that regardless of the introduction of strategies to identify need and enhance family support, ongoing barriers to services adhere. Taking a social constructionist approach, this study explored professionals' experiences of the use of the Common Assessment Framework form. Data were collected in four different local authorities in two phases. Forty‐one professionals from a variety of agencies took part in semi‐structured interviews. Data were analyzed thematically. Findings demonstrate that the professionals experienced difficulties in working through the Common Assessment Framework process, for example, in completing the form and engaging families. This situation led to the more experienced and knowledgeable professionals utilising creative ways to successfully navigate the ‘referral process’. Such creative working practices included the terminology used to complete the form and how the process was ‘sold’ to parents, so that they could be in a better position to engage parents and complete the Common Assessment Framework form. Because of this, more experienced professionals seem to be able to accelerate the referral process in order to access much needed support services for children and young people.