我国的水资源问题及其可持续利用对策

我国是一个缺水的国家，随着社会经济的发展，我国的水资源问题越来越严重，已成为制约社会经济发展的“瓶颈”．实施可持续发展战略，水资源的可持续利用是重要一环，本文论述了我国水资源的四大特点及其开发利用中存在的问题，提出了七项可持续利用对策．     

Geschlechtsspezifische Leistungsunterschiede in Abhängigkeit der sozialen Herkunft. Eine Untersuchung zur Interaktion zweier sozialer Kategorien

Gender differences in educational outcomes are often reported. However, some evidence suggests that these differences are not consistent but vary with social background. In quantitative research, however, the interaction between gender and social background has been underinvestigated. The present study investigates whether the effect of gender on achievement is moderated by socio-economic status (SES). The sample consists of N = 3935 primary school-children in Berlin (6th grade). The results show that the effect of gender on achievement varies with SES, with a stronger correlation between the achievement of boys and their SES. Taken together, the results of the study suggest a differentiated consideration of the achievement of boys and girls and the importance of considering multiple group identities.     

瑶族节日文化与生产生活习俗的变迁——以广西金秀大瑶山盘村瑶族为例

以盘瑶为代表的瑶族的节日文化与生产生活习俗是瑶族民族文化的集聚表达。最近几十年来,盘瑶节日文化与生产生活习俗在与异文化的频繁接触中发生一些变迁。对于这些变迁可以从内容、原因和影响去考察与分析,以全面展现盘瑶这些变迁的图景     

1999—2000年我国体育心理学研究现状的文献计量学分析

采用文献计量学方法，对1990－2000年我国国内发表体育心理学情况进行统计分析，结果表明；发表体育心理学的论文数量逐年增长；体育科技专业期刊和体育院校学报是刊载论文的主要园地；核心作者的数量和发表的论文质量有待提高。     

Achievement goals,efficacy beliefs and coping strategies in mathematics: The roles of perceived parent and teacher goal emphases

This study examines children’s perceptions of the achievement goals parents and teachers emphasize for them in mathematics, and the relation of these goals to children’s personal achievement goals, self-efficacy beliefs, and coping strategies. Results indicated that children’s perceptions of both parent and teacher mastery and performance goal emphases predicted children’s personal goals. Further, children’s personal goals mediated the relation between perceived parent and teacher goal emphases and children’s efficacy beliefs and coping strategies. Children’s perceptions of parent and teacher emphasis on performance goals varied slightly by gender but not ethnic background, whereas variance across groups in perceptions of mastery emphases did not reach practical significance. Relations between goal perceptions, personal goals, efficacy and coping strategies also did not vary by gender or ethnic background. Implications for future research regarding the goals children perceive to be emphasized in home and school contexts, and their importance for children’s adaptive beliefs and behaviors in mathematics, are discussed.     

从离子型稀土原矿中提取稀土氢氧化物的初步探讨

从稀土溶液中,用氨水和碱金属氢氧化物提取稀土氢氧化物的方法在国内外一些文献报导上已屡见不鲜。但用石灰水作沉淀剂来提取稀土氢氧化物的方法尚未见报导。     

信息时代变化着的工作

新技术的发展正深刻地改变着工作的性质 ,引导着就业和工作的转型 ;与此同时 ,也对教育提出了新的要求 ,潜在地导致教育的转型。在信息时代 ,知识和信息成为将个体重新整合入高生产率工作场所的基础。新的信息经济呼唤新型工人 ,因而正规学校教育和在职培训的重要性日益增加。学校教育与劳动过程都需要增强弹性、合作和参与性 ,并且二者之间应加强相互联系。     

随班就读听障学生及其教师的APHAB量表调查研究

调查并比较随班就读听障学生及其教师对听障学生日常生活交流困难的感知情况。采用改良的助听器效果评估简表 (APHAB量表 )调查听障学生及其教师。结果发现随班就读听障学生自身及其教师对交流困难的感知情况在交谈舒适度 (EC)和背景噪声 (BN)两类问题上的感知差异有统计学意义。提出应该重视对随班就读听障学生的教师关于听力损失相关常识的教育 ,以促进听障学生成功地随班就读。     

Promoting understanding of chemical representations: Students' use of a visualization tool in the classroom

Many students have difficulty learning symbolic and molecular representations of chemistry. This study investigated how students developed an understanding of chemical representations with the aid of a computer‐based visualizing tool, eChem, that allowed them to build molecular models and view multiple representations simultaneously. Multiple sources of data were collected with the participation of 71 eleventh graders at a small public high school over a 6‐week period. The results of pre‐ and posttests showed that students' understanding of chemical representations improved substantially (p < .001, effect size = 2.68‐. The analysis of video recordings revealed that several features in eChem helped students construct models and translate representations. Students who were highly engaged in discussions while using eChem made referential linkages between visual and conceptual aspects of representations. This in turn may have deepened their understanding of chemical representations and concepts. The findings also suggest that computerized models can serve as a vehicle for students to generate mental images. Finally, students demonstrated their preferences of certain types of representations and did not use all types of three‐dimensional models interchangeably. © 2001 John Wiley & Sons, Inc. J Res Sci Teach 38: 821–842, 2001     

淮安市"里运河文化长廊"景观概念规划

里运河文化长廊概念规划以对里运河流域的用地现状、自然号观、人文历史、沿河建筑及空间形态的研究为基础，将32公里长的里运河流域依照不同的功能划分为七个分区，重新构建“一水三线九片”的里运河空间形态。分别从用地调整，景观优化，游线组织等方面进行概念规划，并制定开发实施规划，使里运河文化长廊实现生态、经济、社会和技术的可持续发展。