名词短语类型对中国英语学习者写作中冠词使用的影响——一项基于中国学习者英语语料库的研究

根据Bickerton,D的语义轮模型理论和Huebner,T的名词短语分类理论,对中国学习者英语语料库中的非英语专业大学生(ST3和ST4)写作中的英语冠词使用情况进行了分析。研究发现:名词短语的三大特性(特指性、听话者知识、可数性)对英语冠词的选择和正确使用有显著的影响;零冠词和定冠词存在不同程度的过度使用。     

试论多媒体技术在英语教学中的合理应用

随着科学技术的发展和英语教学改革的深化,多媒体辅助英语教学越来越受到重视。本文在分析多媒体辅助英语教学的优势和存在的误区基础上,探讨合理应用多媒体辅助英语教学应采取的策略,可为英语教学实践提供些许借鉴和思考。     

Statistics Online Computational Resource for Education

The Statistics Online Computational Resource (www.SOCR.ucla.edu) provides one of the largest collections of free Internet-based resources for probability and statistics education. SOCR develops, validates and disseminates two core types of materials - instructional resources and computational libraries.     

Influencing the Probability for Graduation at Four-Year Institutions: A Multi-Model Analysis

The purpose of this study is to identify student and institutional characteristics that influence the probability for graduation. The study delves further into the probability for graduation by examining how far the student deviates from the institutional mean with respect to academics and affordability; this concept is referred to as the “match.” The validity of the matching model is tested using a multivariate analysis with select variables from the Beginning Postsecondary Study: 1996/2001 (BPS:96/01) and the Integrated Postsecondary Education Data System (IPEDS). Traditional multivariate models examine the importance of both student and institutional characteristics but assume the two are independent of one another. This study is different in that it uses the matching model to examine the relationship between student and institutional characteristics. The results are compared to more frequently used models and show that the relationship between students and their institutions plays an important role in understanding the probability for graduation.

Determinant factors of attitude towards quantitative subjects: Differences between sexes

Nowadays, almost all curricula in the social sciences contain at least one course in statistics, given the importance of this discipline as an analytical tool. This work identifies the latent factors relating to students' motivation and attitude towards statistics, tests their covariance structure for samples of both sexes, and identifies the possible differences between the sexes. Specifically, using a structural equations model the work confirms that the evaluative factors affect the affective factors and the interest variable affects the level of anxiety. The findings obtained using the partial least squares method allow the authors to confirm the proposed relations and validate the model.     

北京永定河河岸带生态修复对河流水质的影响

为探讨河岸带生态修复措施对河流水质的直接影响,以永定河已修复的门城湖—莲石湖区段为研究对象,于2013年7—10月沿西岸选取8个采样点,测定溶解氧(DO)、氨氮(NH₄⁺—N)、硝氮(NO₃^-—N)和总磷(TP)的质量浓度.结果表明,河流DO浓度和各营养物质浓度均有明显的季节变化.大部分采样点的DO、NH₄⁺—N和TP浓度未达到地表水IV类水体标准.水生植物较多的河岸带处,河流NH₄⁺—N浓度较低.在生长旺季,长势好的水生植物越多,河流DO和NO₃^-—N浓度越高,TP浓度越低;在生长末期,枯落物较多的河岸带处,河流DO浓度较低,TP浓度较高.凸岸处的河流DO和NO₃^-—N浓度较高,而NH₄⁺—N浓度较低.因此,改变护岸类型、水生植物的多度及河岸的弯曲程度等河岸带结构特征可引起河流水质的变化.     

期刊h指数与载文数量、被引量关系模型及其变化规律的实证分析

利用《中国引文数据库(CCD)》作为样本统计源,分别对相同时间段不同学科、同一学科不同时间段的期刊h指数与载文量(n)、篇均被引量(p)进行统计与曲线回归,曲线回归结果良好,通过对《中文社会科学引文索引(CSSCI)》统计数据回归,进一步证实曲线方程的存在,并根据回归结果分析统计时间段差别对曲线系数的影响及曲线变化的基本规律。     

科技论文中参考文献引用的科学性错误例析

针对科技论文中参考文献引用的科学性差错,提出从参考文献引用的必要性、准确性2方面进行审核的方法.结合实例对这2个方面共6种常见错误进行剖析并给出了修改方法:遗漏必要文献、堆砌非必要文献、非对应引用文献、错误引用文献、引用错误文献、引用陈旧文献.分析了参考文献引用出现科学性差错的主客观原因,提出了期刊编辑和审稿人在工作中...     

汉英礼貌准则对比分析

中西方礼貌原则存在较大差异。人们在社会交往中的言语行为是基于文化准则和文化价值之上的,因此,学习语言和学习文化同等重要,成功的交际也取决于学习者对文化的认知,而对于语言学习者来说,清楚目的语国和母语中的礼貌原则的异同是非常重要的。     

Statistical analyses in the physiology of exercise and kinanthropometry

Research into the physiology of exercise and kinanthropometry is intended to improve our understanding of how the body responds and adapts to exercise. If such studies are to be meaningful, they have to be well designed and analysed. Advances in personal computing have made available statistical analyses that were previously the preserve of elaborate mainframe systems and have increased opportunities for investigation. However, the ease with which analyses can be performed can mask underlying philosophical and epistemological shortcomings. The aim of this review is to examine the use of four techniques that are especially relevant to physiological studies: (1) bivariate correlation and linear and non-linear regression, (2) multiple regression, (3) repeated-measures analysis of variance and (4) multi-level modelling. The importance of adhering to underlying statistical assumptions is emphasized and ways to accommodate violations of these assumptions are identified.