期刊联合专藏的必要性与可行性

一、联合专藏的必要性进入八十年代后,我国专业期刊的出版种类和数量成倍增长,外文期刊的进口量也大幅度增加,各馆的情报资源建设都取得了较大成就.尽管这样,用户仍然感到他们利用检索工具查到的文献线索,总有相当一部分在本馆甚至在本地区找不到原文.这表明传统的期刊订购、收藏模式存在着严重弊端.一方面,由于期刊价格连年上涨,使得许多图书馆难以承受经费不足     

Lighting the world with molecules

Efficient lighting and display have become important concerns in the energy-starved modern world. This has led to new paradigms in lighting and display technologies. Organic molecules provide a new class of active materials for such technologies. This article gives the basic science behind the design of such molecular materials used in displays and lighting.     

集团化发展面临的课题与对策

自2000年底我国第一家省级广播影视集团挂牌成立迄今．全国已成立了近10家不同类型的广播影视集团。在集团组建、运作和发展的进程中．许多地方和单位积极进行了制度创新、节目创新、技术创新等探索．在不少方面取得了新的突破和进展．但同时也碰到了许多突出的问题。这里试析解十题。     

Extended Test Time and postsecondary Students with Learning Disabilities: A Model for Decision Making

The most frequently requested accommodation among students with learning disabilities (LD) in postsecondary settings is extended test time. The frequency with which this accommodation is requested and granted compels disability service providers to become knowledgeable about the factors that influence the need for, and appropriateness of, the accommodation. Moreover, the synthesis of these factors becomes the basis for determining if the accommodation is reasonable under federal law. The purpose of this article is to present a step‐by‐step model to be used as a decision‐making process when considering the accommodation of extended test time for postsecondary students with LD. The model is designed to assist disability service providers in the analysis and synthesis of information collected from (1) the student's diagnostic evaluation, (2) the course or classroom test to be accommodated, and (3) student interviews. A list of diagnostic tests from the four most frequently administered test batteries used with adults is provided, along with a concise explanation of how characteristics of LD impact reading, writing, and math, and relate to the need for extended time. This information can be used to determine if extended test time is a reasonable accommodation and to estimate how much additional time to provide.     

以知引趣活跃思维——谈中学英语课堂教学的趣味性

要使课堂教学有趣味决非易事，它是一门学问，又是一门艺术。它要求教师具有扎实的教学功底，开阔的眼界和渊博的知识。趣味，顾名思义，是有趣且可回味。决非为了轻松一下，一笑了之，更不是搞噱头，哗众取宠。苏联教育学家科罗寥夫说过：“有趣味、有吸引力的东西使识记可能性几乎增加一倍半，这就是教育的潜力所在。”显而易见，趣味不是目的，而是一种策略。目的是为了营造一个热气腾腾、生动活泼、轻松愉快的学习环境。把书教得趣味盎然是为了充分挖掘学生的学习积极性、主动性和创造性，使其“记忆的可能性”增加，最终达到熟练自如地…     

International Early Childhood Resources from Educational Research Abstracts (ERA)

The aim was to examine cross-cultural variation in linguistic responsiveness to young children in 10 English-speaking mother–child dyads and 10 Italian-speaking mother– child dyads. All 20 children were late talkers who possessed delays in expressive vocabulary development but age-appropriate cognitive and receptive language skills. Dyads were filmed in 15 minute free play contexts, which were transcribed and coded for measures of maternal linguistic input (e.g. rate, MLU, labels, expansions) and child language productivity (e.g. utterances, different words used). The results revealed that the Italian mothers used more utterances, spoke more quickly and used a more diverse vocabulary than the Canadian mothers. The Italian children mirrored their mothers and also used more utterances and a more diverse vocabulary than the Canadian children. Mothers in both groups used similar percentages of responsive labels and expansions. However, Italian mothers responded to fewer of their children's vocalisations, using a smaller percentage of imitations and interpretations than the Canadian mothers. Correlations between maternal input and children's language productivity revealed that contingent language measures (e.g. imitations, interpretations, expansions) were related to high levels of productivity in children in both cultural groups. The results support the use of language interventions based on increasing maternal responsiveness for these children at the one-word stage of language development. They also point to differences that may be culturally based. For example, Italian mothers use faster rates of interaction and appear to have higher expectations for their children's verbal participation in interaction. This is reflected in higher rates of language production from their children, even though children in both cultural groups have similar vocabulary sizes.     

如何提高大学物理实验课程的教学作用

本文通过介绍作者在大学物理实验课程改革中所做的一些探索 ,阐述了如何提高实验课程的教学作用。     

数字图书馆与导读

导读能提升数字图书馆的信息服务水平, 弥补数字资源建设的不足; 当前我国图书馆事业不可阻挡的数字化进程, 对图书馆的导读工作产生了巨大影响。本文着重探讨了数字图书馆的导读工作模式, 并认为数字图书馆做好导读工作首先要针对“体制不规范、任务不明确、队伍不健全”导读现状采取相应的对策, 其根本出路则在于走产业化之路。