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991.
本文对“丑”的内涵及其分类加以论述。  相似文献   
992.
本文将俄语主从复合句传统分类法和主从复合句新分类法进行了多方面的比较和分析 ,论述了新分类法的特点、意义。从教学的观点看根据意义和结构进行分类的方法 ,更有助于学生掌握语言。  相似文献   
993.
比喻分为显性联系和隐性联系两大类.在其内部,各种比喻的喻体对本体的关系不尽相同:在显性联系比喻中,相似型有陈述、解释、修饰三种,相比型和相等型分别是比较、相等关系;在隐性联系比喻中,同现型有并列、承接、解释、修饰等几种,独现型则是替代关系.各种比喻的喻体与本体间关系的疏密也不一致,由密至疏排列为:独现型-同现型-相等型-相比型和相似型.  相似文献   
994.
Although “choose all that apply” questions are common in modern surveys, methods for analyzing associations among responses to such questions have only recently been developed. These methods are generally valid only for simple random sampling, but these types of questions often appear in surveys conducted under more complex sampling plans. The purpose of this article is to provide statistical analysis methods that can be applied to “choose all that apply” questions in complex survey sampling situations. Loglinear models are developed to incorporate the multiple responses inherent in these types of questions. Statistics to compare models and to measure association are proposed and their asymptotic distributions are derived. Monte Carlo simulations show that tests based on adjusted Pearson statistics generally hold their correct size when comparing models. These simulations also show that confidence intervals for odds ratios estimated from loglinear models have good coverage properties, while being shorter than those constructed using empirical estimates. Furthermore, the methods are shown to be applicable to more general problems of modeling associations between elements of two or more binary vectors. The proposed analysis methods are applied to data from the National Health and Nutrition Examination Survey. The Canadian Journal of Statistics © 2009 Statistical Society of Canada  相似文献   
995.
This paper examines the extent to which differences in welfare generosity across states leads to interstate migration. Using microdata from the National Longitudinal Survey of Youth (NLSY) between 1979 and 1992, we employ a quasi-experimental design that utilizes the categorical eligibility of the welfare system. The pattern of cross-state moves among poor single women with children, who are likely to be eligible for benefits is compared to the pattern among other poor households. We find little evidence indicating that welfare-induced migration is a widespread phenomenon. Received: 3 April 1997/Accepted: 4 September 1998  相似文献   
996.
This paper studies the effect of increased immigration in Austria on the unemployment risk of young natives. Austria experienced a dramatic rise in the share of alien workers as a result of the breakdown of the former communist regimes (especially from former Yugoslavia). We concentrate on unemployment entry of young male workers, who are supposed to compete most heavily with new immigrants. Our results indicate that the detrimental impact – if it exists at all – is only minor. This is irrespective of the analyzed proxy for competition: The share of foreign workers in an industry or in a region. Received: 7 March 1996/Accepted: 20 March 1998  相似文献   
997.
Using two different measures of relative cohort size – one indicating the size and placement of an individual's own birth cohort, and the other, the ratio of young to prime age adults in the United States in that year – it has been possible to isolate strong effects of the population age structure on wages in the United States over the past thirty-three years. These effects have been strong enough that virtually all of the observed change in the experience premium, and a substantial proportion of the changes in the college wage premium, can be explained by the relative cohort size variables alone. Even changes in the amount of within-group variance in wages appear to be largely a function of changing age structure, and absolute wage levels have been strongly affected by these demographic changes, suggesting that population growth can have positive effects on the economy. Received: 27 January 1998/Accepted: 6 June 1998  相似文献   
998.
The immigrants' age structure and labour market situation are major determinants for their net contribution to the public sector. During the 50s, 60s and the 70s the immigrants' net contributions gave positive income effects for the native Swedes. Nowadays there are negative income effects due to the deteriorating employment situation among the immigrants. The yearly positive or negative income effects have at most been 1–2% of the gross national product. A change in the immigrants' employment rate by 1 percentage unit will change their yearly net contribution to the public sector by 0.1% of the gross national product. Received: 2 February 1996/Accepted: 28 July 1998  相似文献   
999.
本文从统计指数的概念、分类、应用等方面 ,论述了统计学教材中有关理论的不足之处 ,进而阐明了自己的观点。  相似文献   
1000.
探索一条“能动地调控自然——社会——经济复合系统,使人类在不超过资源与环境承载能力的条件下,促进经济的发展,保持资源永续和提高生活质量”的持续发展道路,已成为全人类的迫切要求。中外众多学者从不同的角度对实现可持续发展进行了多方面的探索和研完,作者对可持续发展进行了类型划分,提出了系统分类方法,并在此基础上分析了持续发展类型转化作用机制,提出了转型的调控措施,并以淮河流域实例进行了分析。  相似文献   
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