儿童注意缺陷多动障碍研究现状与动向

儿童注意缺陷多动障碍是一种发展性的异常,是儿童期最为常见的最复杂的情绪与行为障碍之一。本文对儿童ADHD研究的热点即成因研究和干预研究的已有成果进行了归纳和总结,并分析了目前研究的趋势,以期为今后的研究提供一些科学的参考。     

An Examination of Text Complexity as Characterized by Readability and Cohesion

To better understand dimensions of text complexity and their effect on the comprehension of adolescents, 103 high school seniors were randomly assigned to 4 groups. Each group read versions of the same 2 informational passages and answered comprehension test items targeting factual recall and inferences of causal content. Group A passages had a challenging readability level and high cohesion; Group B passages had an easier readability and low cohesion; Group C passages had a challenging readability level and low cohesion; and Group D passages had an easier readability and high cohesion. Students in Group D significantly outperformed students in Group C (g = 0.78). Although the effect sizes of comparisons among all groups ranged from g = 0.13 to 0.73, no other comparisons were statistically significant. Results indicate that adolescents’ reading comprehension is dually influenced by a text's readability and cohesion. Implications for matching readers to instructional text are discussed.     

Teachers' Voices in the Context of Higher Education Reforms in Armenia

In this article, teachers' sense-making and reasoning about higher education reforms in a post Soviet country, namely Armenia, are examined using an analytical framework with six sensitising concepts: beliefs, emotions, attitudes, change knowledge, attributions and organisational culture. The results of semi-structured interviews with 12 Armenian higher education teachers showed that they mainly felt distrust towards reforms and that the implementation initiatives caused dissatisfaction, frustration and therefore distortion. At a deeper level, the teachers mostly felt excluded from the reform process and that their role was depreciated. One striking feature was the predominant causal attribution of teachers to external, unstable and uncontrollable factors which question the success of the reforms.     

Student satisfaction with Canadian music programmes: the application of the American Customer Satisfaction Model in higher education

The purpose of this project is to empirically investigate several antecedents and consequences of student satisfaction (SS) with Canadian university music programmes as well as to measure students’ level of programme satisfaction. For this, the American Customer Satisfaction Model was tested through a survey of 276 current Canadian music students. The results indicate that customer satisfaction is strongly affected by programme quality, is slightly impacted by its perceived value but is not influenced by prior student expectations. Satisfaction strongly increases programme loyalty and positive word‐of‐mouth, marginally raises tuition change loyalty, and slightly decreases complaining behaviour. Contrary to expectations, tuition‐related constructs play only a minor role in the model. Therefore, money is a marginal factor in the educational environment; this empirically demonstrates the flaws underlying the premises of the students‐as‐customers metaphor. The resulting satisfaction index may facilitate the comparison among institutions. It was also found that the level of SS with Canadian music programmes was somewhat lower than those with services in other industries.     

浅析不同因果关系的英语表达

因果关系的英语表达多种多样,本文根据因果关系的不同形式对英语表达方式进行分析和总结,并指出只有在熟悉各种因果关系形式的正确表达的基础上,对事件的起因进行判断和分析,找出何为诱因、何为成因,才能使因果关系的表达更加精准贴切。     

英语语言学硕士论文中因果类话语标记语的使用情况调查——基于语料库的研究

因果类话语标记语在硕士论文一类的学术文章写作中起到不可小觑的作用。根据自建的学习者语料库和本族语者语料库的对比分析,本研究主要的发现是：（1）中国英语专业研究生在毕业论文中对因果类话语标记语的使用频率和种类要高于本族语者;（2）中国英语专业研究生过多使用表结果的因果类话语标记语,过少使用表原因的因果类话语标记语（for除外）。分析表明,共有四方面原因造成了上述差异,即语外因素、语内因素、问题意识的缺乏和个体差异。     

LTI因果系统零状态响应与卷积

对于线性时不变(LTI)因果系统,其系统单位冲激响应h(t)应满足h(t)=h(t)u(t),尽管卷积公式有∫∞-∞x(τ)h(t-τ)dτ=∫∞-∞h(τ)x(t-τ)dτ,但是,上式中h(t-τ)是非因果,所以,公式∫∞-∞x(τ)h(t-τ)dτ不满足实际物理系统。通过实际信号作用于系统的讨论和分析,揭示了在任意时刻的系统零状态响应和满足实际物理系统的卷积∫∞-∞x(τ)h(t-τ)dτ的物理意义。     

中国英语媒体传播效果研究

本文借助实证调查法 ,从正反两方面分析了中国大陆英语媒体的传播效果 ,认为中国英语媒体的发展已取得了很大成绩 ,其作用不可替代 ,但还存在受众定位趋同等问题。文章同时还探讨了中国英语媒体传播效果欠佳的成因———如媒体理念、可信度、非产业化运作以及语言和文化等因素     

装备经费规模与结构优化的影响因素及内部关系

分析影响装备经费规模与结构优化的主要因素,建立装备经费规模优化、全寿命角度装备经费结构优化和军兵种间装备经费结构优化三个因果关系图对各影响因素进行探讨,得到了各种因素相互影响的反馈机制和内在规律,为定量研究装备经费规模与结构优化提供基础。