Poverty Experiences of Young Children and the Quality of Their Home Environments

This paper assesses the relative contribution of maternal, household, child, and poverty characteristics to the quality of the home environment. The sample consists of 1,887 children birth to 4 years old from the National Longitudinal Survey of Youth (NLSY). Ordinary least-squares regression is used to explore conceptually distinct aspects of children's poverty experiences. Poverty variables are found to have a statistically significant effect on the quality of the home environment, after controlling for the effects of other variables in the models. Statistically significant interactions among poverty variables are identified. A major finding is that improvements in family income have the strongest effects on the quality of the home environment for children who were born poor or lived much of their lives in poverty. The conclusion emphasizes implications for future research.     

大科学项目的组织分析

论述了大科学项目是当代科学活动的一种重要形态，并且带有国际色彩，往往需要在国际范围内整合科技资源以解决一些人类共同面对的重大问题，但我国在参与和组织大科学项目中的表现却不尽如人意。本文就大科学项目的组织结构方面进行了分析，介绍了一种适合于大科学项目的复合式的项目型组织结构，并分析了大科学项目的组织特点和组织原则，对于我国的大科学实践具有一定的借鉴意义。     

Girls and Science: Does a core curriculum in primary school give cause for optimism?

The low numbers of students, particularly girls, pursuing science after the age of 16 continues to give cause for concern, despite the inclusion of science as a core subject in the curriculum of primary schools in England and Wales. This article explores the perceptions of primary pupils with regard to science since its introduction as a compulsory component of the curriculum. The findings tend to replicate those of earlier studies, indicating that primary pupils, both girls and boys, view science positively while at primary school and look forward to science at secondary school. However, results show that, within science, girls' and boys' preferences are different. Girls have greater preference for biological topics while boys demonstrate a wider range of interests. Furthermore, the introduction of the National Curriculum appears to have had negligible effect in broadening the interests of girls. It is argued that intervention strategies are needed in order to make all fields of science attractive to girls and that this should begin in the primary phase of education.     

基于证据推理理论的新产品开发项目投资风险评价方法

针对新产品开发项目投资风险评价信息不完全和不准确的问题,引入了证据推理理论和方法,建立包含否定性指标与非否定性指标的新产品开发项目投资的风险评价指标体系,结合实例进行了实证研究。研究表明该方法具有可操作性,并可以为企业进行研发项目投资前期的预测和决策提供科学和较为准确的依据。     

终极娱乐——给魔术师和心灵魔术师的导演笔记（节选）

第二章神秘娱乐的层次关系 从我们的这边看出去,我们带给观众的表演是魔术效果（effect）。而从观众的角度来看呢,我们的演出可分成三种不同的感受：     

Fostering online social construction of science knowledge with primary pre-service teachers working in virtual teams

As many primary pre-service teachers enter teacher education courses with little science background, it is essential in teacher education courses to provide opportunities for them to learn more science independently. The purpose of this study is to investigate an online pedagogical activity that fosters the social construction of science knowledge by primary pre-service teachers working in small virtual teams. The study investigated how the pre-service teachers collaborated online in virtual teams to complete set tasks, their attitudes toward and beliefs about the effectiveness of the online learning experience, and the types and quality of the resources developed. The findings indicated that the virtual team-produced science resource materials were generally of high quality, with nearly half the number of teams engaging with Web 2.0 technologies (e.g. wikis and blogs) to construct their product. The findings indicated positive attitudes toward the collaborative learning even though beliefs about online learning were mixed.