浅谈中间语音系系统的发展和特点--香港英语学习者词尾塞音发音案例研究

本文旨在通过语音实验,研究中间语音系系统的形成,包括母语与目的语、母语迁移以及标志性差异在中间语的形成和发展过程中扮演的角色。实验研究六名母语为粤语的调查对象在讲英语过程中对单词词尾塞音的发音情况,以他们的英语水平分为高级组和初级组,并要求他们在规定时间内朗读含有目标词汇的文章。结果显示,高级组在词尾清塞音和浊塞音发音上都明显较初级组好,说明了学习者的英语水平高低与其词尾塞音发音情况成正比;母语（尤其母语迁移）与目的语共同作用影响中间语的发展;同时,对某些音系结构的共性偏好也加强了中间语的音系结构偏好。     

Learning Disabilities in Taiwan: A Case of Cultural Constraints on the Education of Students with Disabilities

Learning disabilities (LD) has been recognized as a category of special education in Taiwanese law since 1984, and policies ensure educational services for children and youth who have LD. The official definition and identification criteria established in Taiwan's laws closely correspond with those of the United States, but practice differs, largely influenced by the people's cultural and linguistic background. I discuss these legal and cultural features as well as other matters (e.g., growth and change in professional literature on LD). Compared to economically developed countries such as the United States, the educators in Taiwan implement identification procedures, placement, and services at a lower cost. Contents of implementation are introduced in detail. The prevalence rate of LD has been very low (<1 percent). I examine culture‐ and/or society‐specific reasons for low prevalence, such as Chinese orthography, regular teachers' compliance with referral procedures, the education‐first belief of parents, and problems with identification procedures.     

The centrifugal viscometer

In this study, a viscometer, which can measure the viscosity of low-volume liquids (25 μl) within 30 s, was developed on a centrifugal platform. The centrifugal viscometer consists of a disk platform and a motor. Under disk rotation, centrifugal, Coriolis, and viscosity-induced drag forces result in deflection of liquid flow. The viscosity of the liquid sample is determined by the deflection angle of the liquid, which can be examined through image analysis or visual inspection. The viscosities of a series of Newtonian model fluids were tested by the centrifugal viscometer and the results showed good agreement with the ones tested by a conventional rotational viscometer. Since the centrifugal viscometer only requires a motor to function, the microfluidic disk can be produced in large quantities at a low cost through injection molding, and the deflection angle can be detected through visual inspection, it provides an inexpensive, easy to operate, and portable approach to measure low-volume liquid viscosity.     

氯氧化铋半导的制备及其光催化性能的应用研究

通过调整反应的pH以及给予不同的后处理方式,以水热法合成了不同形貌的氯氧化铋,采用XRD、SEM、紫外可见分光光度计等手段对其组成、形貌和光催化性能进行了表征,考察不同合成条件下的氯氧化铋对罗丹明B和甲醛的降解性能。拓展了氯氧化铋在液相污染体系和气相污染体系中对有机污染物降解的应用。实验表明:BiOCl（9U）和BiOCl（6）均获得了最好的光催化效果,其对罗丹明B的降解率在10 min和20 min时均达到了99%,而氯氧化铋则在120 min时对高质量浓度甲醛的降解率达到67%。     

Judgment criteria for the authenticity of internet book reviews

In-depth interviews and genre analysis were conducted to derive the genre characteristics of commercial and noncommercial Internet book reviews in order to explore the judgment criteria for commercial (i.e., fake) and noncommercial (i.e., authentic) Internet book reviews. An empirical investigation was then performed to confirm which genre characteristics could serve as judgment criteria. Results indicated that structure and format, attributes of content, information orientation, number of words, lexical richness, personal pronouns, and paralinguistic features can provide useful clues to judgments. Moreover, commercial Internet book reviews with certain genre characteristics may hide their commercial intentions. These findings can provide reference for judgment criteria for online readers or librarians who want to select books based on objective book reviews, or on Internet bookstore marketing strategies that focus on electronic word-of-mouth comments.     

膨胀阻燃聚丙烯燃烧残炭的结构分析

采用离子色谱法测定残炭提取液中离子及其含量,并用红外光谱仪和x-荧光光谱法（EDX）分析了残炭在浸泡前后的结构变化。结果表明,在超纯水中浸泡得到磷酸根离子;在80℃温度下,震荡提取72小时后,提取液中磷酸根离子浓度达到最大值;提取后残炭中磷含量显下降,P-O-P和P-O-C结构的吸收峰显著减小。说明,残炭中大部分的P-O-P和P-O-c键水解成磷酸根,残留的P可能进入残炭的环状结构或与环状结构直接相连。     

样本缴送制度下图书馆与出版社的互利共赢——广东省图书样本缴送工作分析

出版物样本缴送制度对于完整收藏与保存本国出版物、传承历史与文明具有重要意义.目前,图书馆在执行缴送制度时遇到了许多困难,如何解决这些困难也是业界同仁非常关心的问题.论文提出只有主管部门、出版单位、图书馆三方共同努力才能取得成功,并且提出了改革和完善出版物缴送制度的具体措施.     

数控技术技能竞赛与课程体系建设的思考

全国数控技能大赛的举办,对提高高职院校专业建设的认识水平有积极的促进作用。分析近年来全国数控技能大赛的发展趋势,提出了基于岗位职业能力的课程体系开发与建设思路,对人才培养模式、课程体系、实践教学体系、师资队伍建设等方面的教学改革提出相应的改进和完善的措施。