加入WTO与中国社会保障制度的发展与完善

十年来中国社会保障建设取得了很大的成就,社会保障成为改善民生和社会建设重要领域和促进力量,对于克服经济全球化深入发展背景下各种矛盾、促进经济发展和社会稳定发挥着积极的作用。但是,中国社会保障制度还不完善,面对世界贸易组织框架下越来越复杂的国际国内形势,需要进一步加快社会保障制度建设,选择科学合理的社会保障模式和管理体制,加强社会保障公共服务体系建设,实现人人享有社会保障。     

Maternal Experiences of Parenting Girls who are Perceived as Overweight or at Risk for Becoming So: Narratives of Uncertainty,Ambivalence and Struggle

This work explored U.S. mothers’ experiences of parenting young adolescent girls who are perceived by their mothers as overweight or at risk for becoming so. Data were collected via in‐depth interviews with 13 mothers and were analysed using a constructivist grounded theory approach. Many mothers experienced socializing their daughters about issues of the body, weight, diet, and health as marked by uncertainty, ambivalence and struggle, particularly relative to four subthemes: mothers’ embodiment as challenge to ‘good mothering’, negotiating a dilemma of the ‘healthy mind’ versus the ‘healthy body’, managing discipline: how much to intervene?, and the challenge of interpersonal dynamics.     

中国商品流通现代化的模糊综合评价研究

完善了商品流通现代化指标体系,并运用模糊综合法将商品流通现代化指标转换成了指数。研究发现商品流通现代化水平与其区域位置、总体经济实力密切相关,且受到产业结构的影响。同时,通过基于指数的聚类分析得到如下结论:"率先发展型区域"要抓住历史机遇,培养创新型人才,保持领先地位;"积极追赶型区域"要发挥地理优势,打破省之间、行业和部门之间、所有制之间的界限,积极参与各种区域经济合作;"流通欠发达型区域"要进一步推进和实施西部大开发战略,推进物流现代化。     

Classical estimation of hazard rate and mean residual life functions of Pareto distribution

Abstract

In this paper we find the maximum likelihood estimates (MLEs) of hazard rate and mean residual life functions (MRLF) of Pareto distribution, their asymptotic non degenerate distribution, exact distribution and moments. We also discuss the uniformly minimum variance unbiased estimate (UMVUE) of hazard rate function and MRLF. Finally, two numerical examples with simulated data and real data set, are presented to illustrate the proposed estimates.     

Asymptotic expaxsioxs for the joint distribution of cirrelated hotellings t2 statlstics under normality

Let T² _i=z′_iS^?1z_i, i==,…k be correlated Hotelling's T² statistics under normality. where z=(z′_i,…,z′_k)′ and nS are independently distributed as N_kp((O,ρ?∑) and Wishart distribution W_p(∑, n), respectively. The purpose of this paper is to study the distribution function F(x₁,…,x_k) of (T² _i,…,T² _k) when n is large. First we derive an asymptotic expansion of the characteristic function of (T² _i,…,T² _k) up to the order n^?2. Next we give asymptotic expansions for (T² _i,…,T² _k) in two cases (i)ρ=I_k and (ii) k=2 by inverting the expanded characteristic function up to the orders n^?2 and n^?1, respectively. Our results can be applied to the distribution function of max (T² _i,…,T² _k) as a special case.     

论海外华人网文中的感伤情结与忧患意识——以“寒胭”作品为例

海外华人的网络写作越来越普遍,大多以非功利的＂民间＂立场、＂性灵性＂写作特点与多元文化视角独树一帜。网名＂寒胭＂者写作中对家国文化传承、城市现代化进程、人性变异与现代人精神实质的追溯与揭示颇具代表性,其感伤情结、家国情怀和忧患意识体现于哀国、殇城、感人、忧世四个方面。此类写作的意义在于,当一个民族身为＂弱国＂的历史未过百年,被强势文化浸濡的现状尚在延续,物质的发展建构在一定道德文明代价的付出之上,而多数人已在现代化进程中麻痹自满时,作为愈是远离而乡情愈重的海外儿女,他们的民族危机意识对＂人的存在＂与＂现代化＂真正涵义的质询与考辨,无论是对于祖国民族道德传承,还是精神物质文明建构,均有着弥足轻重的镜鉴意义。     

The Food Crisis and its Impacts on Poverty in Senegal and Mali: Crossed Destinies

This article uses two CGE macro‐micro models to analyse the distributional impact of the food crisis and policy responses in two neighbouring African countries, both of which are strongly dependent on agriculture. The approach captures structural differences at both the macro and micro level for household income and expenditure structures, and the results reveal differences for poverty impact at the national and sub‐group levels, as well as for inequality and pro‐poor analysis. The importance of country‐specific analysis and the risk of extrapolating conclusions from one country to another are also highlighted.     

Getting Real About Food Prices

The 2008 spike in world grain prices is widely recognised to have had serious impacts on food security and poverty, but these high grain prices are commonly described as low in historical terms – an inconsistency resulting from the use of advanced‐ and global‐economy price indices in calculating real prices. This ignores the high share of food in poor people's expenditures and the indirect effects of income growth on expenditure patterns of rich consumers. Poor consumers have not experienced the same falls in real food prices and are more vulnerable to price shocks. Different price indices must be developed to take account of differences between consumer groups.     

On second-order improved estimation of a gamma scale parameter

This paper concludes our comprehensive study on point estimation of model parameters of a gamma distribution from a second-order decision theoretic point of view. It should be noted that efficient estimation of gamma model parameters for samples ‘not large’ is a challenging task since the exact sampling distributions of the maximum likelihood estimators and its variants are not known. Estimation of a gamma scale parameter has received less attention from the earlier researchers compared to shape parameter estimation. What we have observed here is that improved estimation of the shape parameter does not necessarily lead to improved scale estimation if a natural moment condition (which is also the maximum likelihood restriction) is satisfied. Therefore, this work deals with the gamma scale parameter estimation as a separate new problem, not as a by-product of the shape parameter estimation, and studies several estimators in terms of second-order risk.     

Gauging the Acceptability of HIV Vaccines: An Exploratory Study Examining Knowledge,Attitudes, and Beliefs Among Injecting Drug Users in Viet Nam

ABSTRACT

In contrast to other countries in Southeast Asia, the HIV/ AIDS epidemic is in the initial stages in Viet Nam, although the rates have increased notably since 1997. This study examined attitudes towards the use of an HIV vaccine (when one becomes available) as a means for preventing the disease. Since injecting drug users are the great majority of those affected by the HIV/AIDS epidemic in Viet Nam, two focus groups (n = 18) were conducted among this population to identify potential barriers and incentives for HIV vaccination. Most were willing to be vaccinated if an HIV vaccine were available. Although there were some concerns about side effects, financial costs, and stigmatization, the benefits were seen to outweigh the risks. The findings may help governments better understand the potential demand for this type of vaccine and design social marketing campaigns for post-trial HIV vaccine dissemination in order to maximize potential uptake of an HIV vaccine.