正确认识和对待私营企业主入党的问题

私营企业主能否入党是一个众说纷纭的敏感问题。社会主义事业的建设者的特性决定了优秀的私营企业主可以入党 ;发展优秀的私营企业主入党应该把握好发展党员的方针政策、原则和程序以及对优秀私营企业主的考察培养等问题     

非统计专业统计学教育刍议

针对非统计专业统计学教育目前存在的问题,阐述了提高对统计学重要性的认识是保证统计教学效果的前提;统计学教学环节的改革是提高教学效果的重要保证;统计教师的业务素质是提高统计教学效果的关键。     

Empirical likelihood confidence intervals for the mean of a population containing many zero values

If a population contains many zero values and the sample size is not very large, the traditional normal approximation‐based confidence intervals for the population mean may have poor coverage probabilities. This problem is substantially reduced by constructing parametric likelihood ratio intervals when an appropriate mixture model can be found. In the context of survey sampling, however, there is a general preference for making minimal assumptions about the population under study. The authors have therefore investigated the coverage properties of nonparametric empirical likelihood confidence intervals for the population mean. They show that under a variety of hypothetical populations, these intervals often outperformed parametric likelihood intervals by having more balanced coverage rates and larger lower bounds. The authors illustrate their methodology using data from the Canadian Labour Force Survey for the year 2000.     

The potential of integrated modelling in conservation biology: A case study of the black‐footed albatross (Phoebastria nigripes)

Conservation biology aims at assessing the status of a population, based on information which is often incomplete. Integrated population modelling based on state‐space models appears to be a powerful and relevant way of combining into a single likelihood several types of information such as capture‐recapture data and population surveys. In this paper, the authors describe the principles of integrated population modelling and they evaluate its performance for conservation biology based on a case study, that of the black‐footed albatross, a northern Pacific albatross species suspected to be impacted by longline fishing     

中国与俄罗斯经济转轨比较

经济转轨的基础决定了中国与俄罗斯的经济转轨方向的不同，产权改革的效率决定两国经济转轨的成效。通过两国经济转轨的比较，文章认为有三个方面的深刻经验教训特别值得我们重视，即经济转轨必须高度重视政府的作用、产权私有化并非提高效率的充分必要条件、产权制度的变迁具有演进性和不可复制性。     

西方歌剧Leitmotif(主题)技巧的起源与发展

Leitmotif被广泛地运用在西方歌剧中并起着非常重要的作用。本文论述了leitmotif的起源与发展。早期Leitmotif它的特征是反复出现但是变化不多。后来韦伯发展了这一技巧。他不仅在leitmotif再现时增加了和声和节奏上的变化,而且还用leitmotif将歌剧各幕之间联系起来,起到了贯穿的作用。德国作曲家瓦格纳将leitmotif技巧的运用提到了最高的水平。瓦格纳创造性地将多个leitmotif交织在一起运用,形成一个大的音乐网。并用此网从始至终与剧情紧密配合,使其成为作品必不可少的主体。从而打破了歌剧原有的固定型式,为歌剧的发展写下了重要的一页。     

Refugee Children in Wales: Coping and Adaptation in the Face of Adversity

This article aims to makes a contribution to redressing a methodological and theoretical imbalance in existing research on refugee and asylum‐seeking children. It draws on two qualitative studies from Wales with children and young people. The samples include unaccompanied minors and children living with families as well as both children who are supported in the asylum system and those who have been granted refugee status. The focus on ecological post‐migratory stressors and coping processes that young people identify as being integral to their well‐being and, once granted status, to how they adapt to settlement includes a selective study of some of the sources of resilience referred to in the children's talk. Recognising the interplay between individual and environment leads to a discussion of both personal attributes and collective cultural identities.     

Estimating household structure in ancient China by using historical data: a latent class analysis of partially missing patterns

Summary.  Social data often contain missing information. The problem is inevitably severe when analysing historical data. Conventionally, researchers analyse complete records only. Listwise deletion not only reduces the effective sample size but also may result in biased estimation, depending on the missingness mechanism. We analyse household types by using population registers from ancient China (618–907 AD) by comparing a simple classification, a latent class model of the complete data and a latent class model of the complete and partially missing data assuming four types of ignorable and non-ignorable missingness mechanisms. The findings show that either a frequency classification or a latent class analysis using the complete records only yielded biased estimates and incorrect conclusions in the presence of partially missing data of a non-ignorable mechanism. Although simply assuming ignorable or non-ignorable missing data produced consistently similarly higher estimates of the proportion of complex households, a specification of the relationship between the latent variable and the degree of missingness by a row effect uniform association model helped to capture the missingness mechanism better and improved the model fit.     

语境对语义的作用探析

语境是语义学中一个重要的范畴。以丰富的例句从以下四个方面:使语言中的多义和歧义现象获得明确的单一性;影响语义的感情色彩;语义的语体色彩及填补或丰富语言本身的意义探讨了语境对语义的作用,旨在唤起读者学会在不同的语境中择取语义的自觉意识。