The role of tobacco taxes in starting and quitting smoking: Duration analysis of British data

The annual 5% increase in tobacco taxes in real terms proposed in the recent White Paper on smoking has reaffirmed the commitment of successive UK Governments to above-inflation increases in tobacco taxation to encourage people to stop smoking. This paper presents evidence on the determinants of starting and quitting smoking by using data from the British Health and Lifestyle Survey and is the first to identify tax elasticities for starting and quitting smoking using British data. Self-reported individual smoking histories are coupled with a long time series for the tax rate on cigarettes to construct a longitudinal data set. Estimates are obtained for the effect of above-inflation tax rises on the age of starting smoking and the number of years of smoking. The estimates of the tax elasticity of the age of starting smoking are 0.16 for men and 0.08 for women. The estimates of the tax elasticity of quitting are −0.60 for men and −0.46 for women. These are robust to different specifications.     

我国民事再审程序启动研究

我国民事再审程序的启动存在诸多的缺陷,我们应当在转变立法指导思想的基础上取消法院的再审启动权,限制检察机关的权力,增强当事人在启动再审中的影响力,并对再审的时限和事由进行重新设定。     

《长恨歌》主题新论

长期以来研究者对《长恨歌》主题的探讨仍然停留在文字和事件的表层意义上;如果从象征或寓言的意义层面来看,《长恨歌》表现的应该是人的悲剧,是对于人生顾此失彼的尴尬处境,对生命难得完满的必然结局的深切悲叹。     

Race Differences in Family Experience and Early Sexual Initiation: Dynamic Models of Family Structure and Family Change

We examine the effects of family structure on age at first sexual intercourse before marriage for a recent cohort of women. Previous research on the linkage between family structure and sexual initiation has employed relatively crude measures of family structure—typically a snapshot of the respondent's family structure at age 14. We use retrospective parent histories from the 1979–1987 National Longitudinal Survey of Youth to construct dynamic measures of family structure, using information on the number and types of parents in the respondent's household between birth and age 18. We use these measures in proportional hazard models to test the effects of prolonged exposure to a single‐mother family, prolonged absence of a biological father, parental presence during adolescence, and family turbulence. For White women, age‐specific rates of first sexual intercourse are significantly and positively associated with the number of family transitions; for Black women, age‐specific rates are significantly and positively associated with having resided in a mother‐only or father‐only family during adolescence. Net of other effects of family structure, we find no significant effects for White or Black women of being born out of wedlock, prolonged exposure to a single‐mother family, or prolonged absence of a biological father. Our results for White women are consistent with a turbulence hypothesis, whereas for Black women our results suggest the importance of family structure during adolescence. For neither White nor Black women are our results consistent with hypotheses positing earlier initiation of sexual activity for women with prolonged exposure to a single‐mother or father‐absent family.     

通用试题库管理系统的研制

阐述了通用试题库管理系统的总体结构 ,该系统由题库、试卷生成、打印、试卷维护、评估分析、帮助和退出等 7个主控模块组成 .对各子模块功能及主要算法作了详细描述 .采用Foxpro5.0forwindows专业版作为开发环境 ,该系统已在PC机上得以实现     

论英语会话中的言语性话题转换信号

文章探讨了英语会话中可充当话题转换信号的词语,以及它们各自在特定的言语环境中起到怎样的具体作用,以期说明话题转换尽管形式多样,但从言语信号上看,仍有一定的规则可循,仍然表现出一些基本特征。     

危机公关中的议程设置与议题管理——以博士伦隐形眼镜护理液的产品质量危机为例

如何在危机时期展开良好的传播沟通活动是危机公关制胜的关键。文章立足于产品质量危机案例,采用内容分析法分析危机时期组织议题和公众议题之间的相关性。研究发现,危机时期组织议题对公众议题具有议程设置的作用,但组织议题与公众议题的角度并不完全一致;随着事态的发展,公众自发性地将有关政府监管的话题纳入议题。基于研究结果,一个新的危机传播模型得以产生:通过设置舆论焦点,相关组织可以进行议题管理,主动并有预见性地展开危机公关。     

"昙花一现"的美丽——朦胧诗回眸

朦胧诗是新时期文学的第一个诗歌潮流,它是一代人生命体验的艺术折光,凸现了自我意识,带来了诗歌审美的嬗变和精神重建的要求。朦胧诗的诗人们呼喊人道主义和要求人的尊严、价值等的启蒙主题,以及大胆借鉴西方现代派的艺术手法的探索精神,无疑是一座崛起的丰碑,已经深深烙在人们心里。然而,朦胧诗由于不可避免的局限性和精神危机,在更为激进的新生代诗人的一片打倒声中,走向消亡。     

Initiation,Trance And Possession in an Afro-Brazilian Religion-The Narratives of a mineiro maranhense

This article presents the process of initiation to the Tambor de Mina, the mainreli-gious tradition in Maranh?o, a state in the north of Brazil .The Tambor de Mina designates an ec-static and inziatic ...     

No place like home? Availability,opportunity, and substance use in adolescence

Surveys on drugs and alcohol availability show that (1) alcohol is much more easily accessible than both cannabis and tobacco, and that (2) many adolescents still do not find it ‘easy’ to access those substances. In the current study, we examine the importance of both opportunity and availability in assessing substance use in adolescence. Our measures of opportunity include skipping school and unstructured socializing, while availability measures include parental substance use and perceived availability of tobacco, alcohol, and cannabis at home. We draw from two waves of the National Longitudinal Study of Adolescent to Adult Health (Add Health) survey, and distinguish between (a) predictors of Wave II substance use for the whole sample, and (b) predictors of Wave II initiation for those respondents who reported no use at Wave I. We find that availability at home and parental substance use is correlated with substance-specific current adolescent consumption, but these indicators are not associated with initiation behavior. Instead, initiation seems to be carried by unstructured socializing outside of the home, with availability at home acting as reinforcement once some level of substance use is established.