馆藏建设的风向标——读者决策采购

读者决策采购(PDA)是近年来风靡美国大学图书馆的一种重要馆藏建设模式,并被广泛用于电子图书建设。本文通过分析其产生背景、发展状况、典型案例,探讨它对图书馆发展的意义影响及对我国大学图书馆建设的启示和可资借鉴之处。     

高校图书馆网络采访工作的实现与对策

电子商务作为一种全新的商业模式,已成为网络商业时代主要的贸易平台。利用电子商务的方式,从网上书店采购文献,是网络环境下图书馆文献采访的一种形式。分析网络采访的优越性和局限性,提出高校图书馆网络采访对策。     

高校图书馆采编工作阻滞因素的探究——以纸质资源为例

图书馆采编工作是高校图书馆业务工作的起点,其工作质量关乎图书馆服务质量。文章从采访图书结构不合理和采编工作效率低下两个角度分析高校图书馆纸质资源采编工作中的阻滞因素,进而从遴选图书供应商、调整优化馆藏结构、建立健全采编工作考核制度和合理规划工作流程等方面提出解决这些阻滞因素的具体策略。     

从语内迁移看Krashen的习得—学习假说

Krashen的习得—学习假说以有无意识为标准将＂习得＂与＂学习＂区分为两个独立的发展第二语言能力的途径,并指出习得比学习重要得多。本文试图通过对二语习得中被视为重要错误来源的语内迁移现象的分析来谈谈对该假说的一些个人看法。从语内迁移看,＂习得＂过程也是有＂意识＂参与的,＂习得＂和＂学习＂互相联系,并且＂学习＂的作用不容忽视。     

Not so silent after all: Examination and analysis of the silent stage in childhood second language acquisition

A period of silence has been advanced as a characteristic feature of childhood second language acquisition. Evidence is presented to document that the presumption of silence as the second of four typical stages of second language acquisition has influenced policy and practice in preschool classrooms. A narrative review examines the extent and quality of the evidence for a silent stage in second language acquisition in young children. Twelve studies meeting inclusion criteria were reviewed and evaluated. Evidence of a silent, non-verbal, pre-production, or receptive language stage was limited. Significant conceptual and methodological limitations within the largely qualitative studies were found. Four major issues raised by the studies are elaborated upon: the theoretical clarity and operational definitions of silence and stage, phase, or period; the psychological meaning and consequences of silence; the cross-context consistency of individual patterns of silence; and how adult language elicitation and support techniques may modulate silence. Recommendations based on contemporary evidence of language acquisition processes are made for the future study of (1) second language acquisition in preschool children and (2) pedagogical practice within preschool settings to promote second language acquisition. Finally, historical, theoretical, empirical, and contextual influences likely to have given rise to the appeal and ready endorsement of silence as a consistent and typical characteristic of childhood second language acquisition are presented.     

阅读过程中的语境词义猜测研究综述

阅读过程中的词义猜测是学习者在文本语境线索和自身知识与经验的基础上正确构建生词词义表征的复杂认知活动,是学习者扩展词汇知识的有效途径。从语境因素、目标词因素、学习者因素、猜词策略培训等四个方面回顾了相关的词义猜测研究成果,并对本领域未来的研究进行了思考和展望。     

普通高校非英语专业学生英语语块能力调查简

语块是语言使用中习惯性共现的词语组合.英语学习者的语块能力与语言综合能力密切相关.借助问卷和访谈手段对一所地方性普通高校（常州工学院）桌非英语专业大学生的英语语块能力进行了调查、统计和分析,发现学生在语块的理解和产出方面都存在着较大问题;而且,大一和大二学生之间不存在明显差别.这种情况表明在当前的英语教学和学习中,教师和学生都严重缺乏语块意识,急需探索有效的教学策略以提升学生的语块能力.     

数据挖掘技术在客户获取中的应用分析

介绍了数据挖掘技术的相关知识和和客户获取过程中的重要影响因素,讨论了在客户获取过程中应用数据挖掘技术的基本环节,并充分肯定其应用前景。     

论认知技能获得的阶段及其教学意义

认知技能是习得规则并用以解决实际问题的能力。完整的认知技能获得过程包括陈述性阶段、程序性阶段和条件化阶段。认知技能获得阶段的揭示有助于我们了解认知技能获得过程的实质，有助于深刻理解知识分类的性质，有助于认知技能形成的有效教学设计。     

Information management and learning in computer conferences: Coping with irrelevant and unconnected messages

The present study examines how learnersinteract with one another within the context ofa computer conference for the purposes ofpassing a test. In a faked computer conferencewith predetermined messages, both the number ofmessages irrelevant to the topic, and theexplicit threading of messages were varied in a2 × 2 design (n = 54). Subjects participated in anasynchronous fashion over a course of fourlog-in sessions. In general, learners indicateda fairly consistent pattern of reception. Theyopened virtually all messages, grouped them ina non-chronological order, and processed themaccording to their topic relevance. Thispattern was also mediated by the conferencecharacteristics. Explicit threading led tosequences of message readings that were morecontent oriented. Similarly, fewer irrelevantmessages lead to prolonged reading times ofrelevant messages. Whereas learning success wasnot affected by conference characteristics,explicitly threaded messages decreased theperceived cognitive demands.