Fingerspelling and sign language as alternative codes for reading and writing words for Chilean deaf signers

The study examined the role of sign language and fingerspelling in the development of the reading and writing skills of deaf children and youth. Twenty-six deaf participants (13 children, 13 adolescents), whose first language was Chilean Sign Language (CHSL), were examined. Their dactylic abilities were evaluated with tasks involving the reading and writing of dactylic and orthographic codes. The study included three experiments: (a) the identification of Chilean signs and fingerspelled words, (b) the matching of fingerspelled words with commercial logos, and (c) the decoding of fingerspelled words and the mapping of these words onto the writing system. The results provide convergent evidence that the use of fingerspelling and sign language is related to orthographic skills. It is concluded that fingerspelling can facilitate the internal representation of words and serve as a supporting mechanism for reading acquisition.     

枇杷叶中三萜酸的提取、分离和检测研究进展

枇杷叶是一种传统的中药植物资源,富含熊果酸、齐墩果酸、科罗索酸等多种三萜酸类化合物,具有较高的应用价值。本文对枇杷叶中三萜酸的种类、提取、分离、检测和生物活性进行了综述。     

An Empirical Research on DDL in L2 Writing

L2 （second language） writing teaching and research is greatly influenced by the advent of computer technology. This paper reviews papers, in the field of DDL （data-driven learning） in L2 writing, published in international journals and in Chinese journals, and differences are found in research methodology, research perspective, and research realm. Based on the analysis of the differences, the study aims at finding out the effects of the application of DDL in L2 teaching classroom. The present study, employing semi-structured writing and learning journals, explores how English learners perceive the use of corpora in their writing process. Based on the statistics, it is concluded that DDL in L2 writing is beneficial for vocabulary acquisition. However, corpus consultation does not work well for all learners. Learners＇ attitudes toward the use of corpus are various. The major findings may find application in teaching practice, and implications for teaching are discussed.     

反思裕固族教育研究——以近三年肃南裕固族自治县学校教师论文为例

反思是一种积极的思维活动和探究行为,通过反思可以明白过去和现在的不足。以求对现在和将来进行弥补。本文以裕固族聚居区——肃南裕固族自治县教师近三年主要的裕固族教育研究论文为例,通过对研究主题、研究内容、学术规范、研究观念的反思,提出了由“应然”式研究向“实然”式研究转变、由零星的研究向系统的研究转变、由数量的增加向质量的提高转变等对策,以求促进裕固族教育研究的良好发展。     

系统函数与时域特性的可视化仿真平台设计

系统函数是信号与系统课程中一个非常重要的概念,它在系统分析中占有重要地位,系统的时域特性是系统的重要特性之一,它取决于系统函数的零、极点分布。利用仿真软件Matlab中GUI设计了系统函数与时域特性的可视化仿真平台,它直观形象地把系统函数与时域特性之间的关系表现出来,加深了学生对此重要内容的理解和掌握,并激发了学生的学习兴趣。     

Dietary Fat Intake and Exercise Among Two- and Four-Year College Students: Differences in Behavior and Psychosocial Factors

Given the demographic differences among two-year colleges and four-year universities and the relatively limited access to health education and campus-based health resources, this study compares the frequency of limiting dietary fat intake and exercising among two- and four-year college students. A total of 2,265 undergraduate students aged 18–25 at a two-year college and a four-year university completed a 108-item online survey in October 2008. We found that two-year college students had less confidence, motivation, and intention to engage in healthy behaviors and reported fewer close friends who exercise regularly but more friends who eat high-fat foods. After controlling for age, gender, ethnicity, and parental education, two-year (versus four-year) college students less frequently limited dietary fat (F(2,2227) = 21.64, p < .001) and less frequently exercised ≥ 20 minutes a day (F(5,2232) = 14.21, p < .001). Thus, research should focus on developing interventions targeting the different psychosocial factors that influence nutrition and exercise among two-year college students.     

Estimation of Controlled Direct Effects in the Presence of Exposure-Induced Confounding and Latent Variables

Estimation of the direct effect of an exposure on an outcome requires adjustment for confounders of the exposure–outcome and mediator–outcome relationships. When some of the latter confounders have been affected by the exposure, then standard regression adjustment is prone to possibly severe bias. The use of inverse probability weighting under so-called marginal structural models has recently been suggested as a solution in the psychological literature. In this article, we show how progress can alternatively be made via G-estimation. We show that this estimation method can be easily embedded within the structural equation modeling framework and could in particular be used for estimating direct effects in the presence of latent variables. Moreover, by avoiding inverse probability weighting, it accommodates the typical problem of unstable weights in the alternative estimation approaches based on marginal structural models. We illustrate the approach both by simulations and by the analysis of a longitudinal study in individiduals who ended a romantic relationship. In this example we explore whether the effect of attachment anxiety during the relationship on mental distress 2 years after the breakup is mediated by rumination or not.     

影响消费者参与在线交易评价因素的实证研究

消费者通过参与评价产品或服务来分享在线交易的体验,同时,消费者也通过网络交易评论了解产品或服务的信息。在线交易评价是消费者购买决策和商家做出营销决策的重要影响因素,实证研究表明,外向型的消费者、具有利他动机、网络社区的资讯性是影响顾客参与在线交易评价的主要因素。     

基于文化归属感分析英语文化的文化趋同

英语是印欧语系日耳曼语族下西日耳曼语支,经历了古英语、中古英语、现代英语三个时期约1500年的发展和演变,现已成为国际性语言。在经济全球化、文化多元化的背景下,英语文化作为世界主流强势文化具有较为显著的特征。本文通过阐述英语文化的发展历程,进一步探讨追求文化归属感和文化趋同的意义,旨在为我国文化的推广提供一些建议。     

评价理论视域下香港特首就职演讲辞之比较分析

演讲语篇蕴含着演讲者的情感、态度和立场,Martin的评价理论提供了对其进行语篇分析的新理论框架。本研究基于评价理论视角,以香港回归祖国15周年为背景,以历任香港特首就职演讲辞为语料,采用定性与定量相结合的研究方法,尝试从态度、介入和级差三个视角挖掘演讲辞背后的情感、态度和立场,并比较其异同。