探索城市景观形象建设的新思路

改革开放30年来．我国经济社会发生了巨大变化,城市化步伐加快．城市面貌日新月异。21世纪是城市经济的世纪．高速的城市化发展进程．为我国的经济社会持续快速发展提供了基础平台．有效地提高了国民的物质和文化生活质量。另一方面．为适应快速发展的需要,提高城市建设的速度．许多城市简单地采用“模式化”建设方式．忽略了城市的自身特色、地域特点等．照搬照抄国内外其他城市的建筑、风格、特色等,造成了城市建设“千城一面、个性丧失、整体空间景观形象混乱”等问题和遗憾。     

农民市民化中的行为主体问题探析

在城乡二元对立现象严重的中国．要实现社会的科学发展,建立和谐社会．城乡统筹工作显得尤为重要。城乡统筹工作要取得根本性的突破与发展．关键在于实现人的转变．即实现农民的城市化．完成农民向城市市民角色的转变。目前很多专家、学者在谈到农民市民化问题时．都强调户籍制度、社会保障、就业政策等．但是农民市民化并不只是解决农民户口、     

关于我国民航法无限额赔偿制度的思考

我国民航法第132条规定的无限额赔偿制度存在不合理之处。该规定将证明承运人主观过错的举证责任交由不具备举证能力的旅客承担,违背了民事诉讼法上举证责任分配的公平原则;在我国部门化立法模式下由民航总局起草的民航法,过于偏重保护承运人利益,与当今国际社会保护消费者利益的立法趋势不符。建议修改民航法,在无限额赔偿制度中实行举证责任倒置,由承运人对其不存在民航法规定的过错承担举证责任。     

Bridging the Gap between Planned and Market Economies: employment policies for people with disabilities in two Chinese cities

From 1978 on wards, China has experienced a radical transition from a centrally-controlled planned economy to a market economy. At the same time, the Chinese economy is developing at high speed. This dynamic situation poses numerous opportunities and challenges to people with disabilities in China. The research finds that, with the help of government's employment policies, disabled people in two Chinese cities have benefited from both the market reforms and high speed economic growth. The Chinese government did not simply throw away the previous institutional arrangements and withdraw from its responsibility for supporting people with disabilities. In contrast, it adjusted the previous policies in order to mobilise resources from the newly-developing market economy. However, the policies have their limitations. They are temporary in nature and suitable for the transitional period only. There are potential problems and challenges ahead for disabled people in a fully fledged market economy in China.     

Social Security Reform in China's Transition to a Market Economy

This paper begins by describing the origins of a social security system that was based on a series of institutional splits that resulted in the development of a fragmented system characterized by inequity and incomplete coverage. The entitlements embedded in this system have proved difficult to revise in the light of changing circumstances and the pressures associated with economic transition, demographic change and the newly emerging problems of open unemployment and urban poverty. These developments, particularly the latter, are creating new demands on a system already struggling to adjust to structural problems of coverage and financial soundness. A series of extensive reforms in the areas of pensions and unemployment insurance and a rationalization of administrative arrangements and responsibilities have been introduced over the last two decades, but further reform seems inevitable as external pressures and policy priorities change. A key goal of the reform process has been to transfer responsibility for social security from enterprises to the state, but the system still suffers from a series of serious financial problems. Despite the extensive reforms that have already been introduced, these problems and the structural imbalances underlying them will require further action. The most important of these imbalances relate to the split between the nature and role of social security in the urban and rural sectors, the role of the commercial provision and its relationship with the state, and the extension of programmes aimed at poverty alleviation.     

公司持有现金和负债是相互替代的吗?

通过利用2001-2008年上市公司财务数据,采用GMM动态面板分析方法,研究了公司持有现金和债务比例的相互关系以及两者随现金流变动的变化规律。尽管总体样本表明,我国上市公司都存在显著的正的现金-现金流敏感性和负的债务-现金流敏感性,且现金持有和负债存在显著的替代关系。但是,在逐步考虑融资约束和对冲需求的条件下,公司持有现金和降低债务的偏好随之发生较大的差异和分化,而且,现金和债务的严格替代关系主要存在于未来现金流紧张的融资约束公司中。这些实证结果说明,我国上市公司既有与发达国家相似的持有现金与债务择机而变的现金流管理政策,同时也存在与我国资本市场不完善条件下自有的财务最优行为。     

交强险的成本因素分析

 内容提要：本文应用聚类分析方法和Beta回归模型对2009年度交强险审计报告所披露的交强险经营数据进行了分析。结果表明,交强险在31个地区的赔付率差异显著,主要影响因素包括人均收入水平、物价指数、人均交通支出和人均车辆数。交强险9个业务类别之间的赔付率差异也很明显,表明现行保费水平存在严重的不公平。各地区的赔付率和费用率之间存在反常的负向相关关系,反映了交强险在费用分摊中存在某种不合理现象。保险公司的经营费用率在不同地区之间和不同业务类别之间都没有显著差异,主要受保险公司业务规模的影响,规模经济效应显著。     

Extension of the pool-adjacent-violators algorithm

The pool-adjacent-violators algorithm (PAVA) is an efficient algorithm which converges in a finite number of steps. However, it has been applicable so far only in isotonic regression with the simple order. This report extends its applicability to other quadratic programming problems, including certain one-sided multivariate testing problems and concave regression problems.     

Zone control charts with estimated parameters for detecting prespecified changes in linear profiles

ABSTRACT

In profile monitoring, control charts are proposed to detect unanticipated changes, and it is usually assumed that the in-control parameters are known. However, due to the characteristics of a system or process, the prespecified changes would appear in the process. Moreover, in most applications, the in-control parameters are usually unknown. To overcome these issues, we develop the zone control charts with estimated parameters to detect small shifts of these prespecified changes. The effects of estimation error have been investigated on the performance of the proposed charts. To account for the practitioner-to-practitioner variability, the expected average run length (ARL) and the standard deviation of the average run length (SDARL) is used as the performance metrics. Our results show that the estimation error results in the significant variation in the ARL distribution. Furthermore, in order to adequately reduce the variability, more phase I samples are required in terms of the SDARL metric than that in terms of the expected ARL metric. In addition, more observations on each sampled profile are suggested to improve the charts' performance, especially for small phase I sample sizes. Finally, an illustrative example is given to show the performance of the proposed zone control charts.     

从皮尔士到哈贝马斯的语用思考

回顾20世纪展望21世纪语用学理论的建构、发展及其未来走向,令国内外语言学界所关注.探讨语用学理论的哲学思想基础、语用学流派及其研究方法,特别是20世纪90年代以来出现的新语用推理机制,将展示语用学无限生命力及其跨学科的魅力.