我国公共政策执行手段的选择、确定问题及改进

在政策执行过程中,有效的政策执行手段对政策目标的顺利实现意义重大。通常使用的政策执行手段有五种,政策执行手段具有某些作用特性。选择、确定合适的政策手段,必须遵循一定的标准和原则。我国公共政策执行手段选择、确定方面存在着一些问题,需要加以改进。     

语段理论下汉语存现句的生成机制研究

存现句是一种特殊的句式,具有跨语言的性质,一般认为其下位句型包括存在甸与隐现句。对汉语存现句相关问题的研究也一直是国内外生成语言学者研究关注的热门话题,通过对汉语存现句的研究进行回顾,发现以往对汉语存现句的研究大多是在管约论框架下进行的,研究的主要问题包括以下几个方面：1．存现句的生成机制;2．句首处所名词组的语法地位;3．存现动词的性质;4．动词后名词组的赋格问题。其中存现句的生成机制问题是最为根本的问题,生成语言学者对此也是各持己见。本文尝试在语段理论的框架下,对汉语存现句的推导生成做尝试性探究,力图寻求汉语存现句统一的生成机制。     

试论中华民族多元一体格局发展的阶段划分

本文通过解析多元一体格局的内涵及其演变,探寻多元一体格局发展的轨迹,将中华民族多元一体格局的发展划分为四个阶段.从中看出,多元一体格局、中华民族(中国境内)、统一多民族中国三者之间虽然范畴不同,却三位一体,多元一体格局本身的形成、稳定与危机,同中华民族、中国统一多民族国家的命运息息相关.     

“当下性”、“本土化”与“走出去”——中国中外文艺理论学会第七届年会暨“文学理论前沿问题”国际学术研讨会综述

2010年4月23日至26日,中国中外文艺理论学会第七届年会暨文学理论前沿问题国际学术研讨会在扬州大学召开。与会代表提交了150余篇论文,涉及当代马克思主义文艺理论形态建构、文学理论走出去与本土化、文学本质与知识化、文学理论与当代文学实践、中国古代文论及西方文论研究的前沿问题等众多专题。本次研讨会内容丰富、观念多元,在一种总结、反思、对话的学术氛围中达成了诸多共识,取得了丰硕的成果。     

养老保险现收现付制的挤出效应——一个内生生育率模型

文章在一个内生经济增长的OLG模型框架下研究现收现付制养老保险计划的挤出效应。具体考察公共养老金税率变动对家庭的消费与储蓄、生育选择以及经济增长的长期影响。结果表明,存在向上利他动机的情况下,挤出效应的大小取决于养老基金的规模,适度规模的公共养老金计划不会挤出私人储蓄。而有利于消费增加与经济增长;较大规模的公共养老金计划会对私人自愿储蓄与消费产生负面影响,并且对储蓄的挤出作用要大于对消费的挤出。人口老龄化进程在一定程度上缓解挤出效应,促进资本积累与经济增长。     

Family Therapy for Kids Without Families: Working Systemically With Children and Young People in Residential Care

A significant proportion (4%, Australian Institute of Health and Welfare, 2008) of children and young people in Australia live in some form of residential care, usually in small group‐homes staffed by residential care workers in shifts. However, as Hawkins‐Rodgers (2007) points out, these placements are often not resourced to heal the effects of trauma and multiple attachment disruptions in their residents. The lack of an archetypal ‘family’ has led in the past to family therapists considering that there is little work to be done with such clients. This leaves such placements to be supported most frequently by clinicians who specialise in behaviour management and other linearly founded models of practice. The Alternate Care Clinic (ACC) is the first mental health service in New South Wales dedicated entirely to children and young people in out of home care with a high level of complex needs. This article examines the systemic therapeutic model the clinic has developed in the last two years. In particular, the article seeks to explore the importance of ‘meaning making’ in a diffuse parental system, particularly with regards to the term ‘family’. The complexities of working in this area and possible ways forward are illustrated with a closely worked case study.     

A two phases queueing system with Bernoulli vacation schedule under multiple vacation policy

This paper deals with a single server Poisson arrival queue with two phases of heterogeneous service along with a Bernoulli schedule vacation model, where after two successive phases service the server either goes for a vacation with probability p (0≤p≤1) or may continue to serve the next unit, if any, with probability q(=1−p). Further the concept of multiple vacation policy is also introduced here. We obtained the queue size distributions at a departure epoch and at a random epoch, Laplace Stieltjes Transform of the waiting time distribution and busy period distribution along with some mean performance measures. Finally we discuss some statistical inference related issues.     

Identifying the most successful dose (MSD) in dose-finding studies in cancer

For a dose finding study in cancer, the most successful dose (MSD), among a group of available doses, is that dose at which the overall success rate is the highest. This rate is the product of the rate of seeing non-toxicities together with the rate of tumor response. A successful dose finding trial in this context is one where we manage to identify the MSD in an efficient manner. In practice we may also need to consider algorithms for identifying the MSD which can incorporate certain restrictions, the most common restriction maintaining the estimated toxicity rate alone below some maximum rate. In this case the MSD may correspond to a different level than that for the unconstrained MSD and, in providing a final recommendation, it is important to underline that it is subject to the given constraint. We work with the approach described in O'Quigley et al. [Biometrics 2001; 57(4):1018-1029]. The focus of that work was dose finding in HIV where both information on toxicity and efficacy were almost immediately available. Recent cancer studies are beginning to fall under this same heading where, as before, toxicity can be quickly evaluated and, in addition, we can rely on biological markers or other measures of tumor response. Mindful of the particular context of cancer, our purpose here is to consider the methodology developed by O'Quigley et al. and its practical implementation. We also carry out a study on the doubly under-parameterized model, developed by O'Quigley et al. but not     

契机与考验并存——浅谈加入世贸组织对青海民族地区经济的影响及对策

本文结合青海民族地区实际 ,对世界贸易组织情况及其与中国谈判所涉及的领域作了简要介绍 ,分析了加入世贸组织后给青海民族地区经济建设带来契机与严峻考验 ,并有针对性地提出了对策。     

聚乙二醇-硫酸铵双水相体系萃取分离食用色素的研究

研究了硫酸铵-聚乙二醇（PEG）双水相体系中,PEG浓度、（NH4）2SO4用量、Trition X-100用量、溶液酸度等因素对常见食用色素叶绿素铜钠盐（SCC）萃取率的影响。研究表明,在50mL的总体积中,聚乙二醇的浓度为30％,10％的SCC溶液的体积为1mL,（NH4）2SO4用量为10．0g,表面活性剂Trition X-100的用量为1．0mL,在中性或微碱性条件下,叶绿素铜钠盐的萃取率达97．98％。叶绿素铜钠盐最大吸收峰位于632nm,实验测定其溶液体积在0—1．2mL范围内符合比耳定律,标准工作曲线为Y=1．0117x＋0．0055,R=0．9999。在实验条件下,金属离子Zn^2＋、Mn^2＋、Mg^2＋、Fe^2＋、Ni^2＋、Cu^2＋对SCC的萃取均不干扰。