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作为美国国家科学数字图书馆（NSDL）的项目之一,健康教育资源图书馆（Health Education Assets Library,HEAL）是一个专门为健康教育工作者提供集图片、视频、音频、功画等多媒体资源为一体的高质量的、免费的数字图书馆。文章从整体上对HEAL进行了介绍和评析,包括概述、数字资源及组织、技术特征、服务特点以及作者的评价和建议。 相似文献
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古腾堡项目（ProjectGutenberg）被普遍认定是最早出现的数字图书馆。1971年7月4日,创始人MichaelHart将美国《独立宣言》输入计算机,开启了古腾堡项目的第一步。40年后,在Mr．Hard的领导和无数志愿者的帮助下,该项目的免费电子书等目前已经超过47Y本,而其附属网站收集的电子书更是超过了1077本。古腾堡项目作为最早的数字图书馆在数字图书馆发展史中扮演了十分重要的角色。文章对该项目的历史背景、信息资源组织、服务和技术特点等进行客观的介绍和评价。 相似文献
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富兰克林·德兰诺·罗斯福图书馆＆博物馆（以下简称罗斯福图书馆）是美国历史上第一个总统图书馆,以其为依托构建的罗斯福数字图书馆（TheFranklinD．Roosevelt Presidential Library and Museum’s digital library project）起步于20世纪90年代,是美国历史上首个实现数字化的总统图书馆项目。它向大众提供罗斯福夫妇生活及工作的历史文献,内容丰富,组织科学,设计合理,在数字图书馆历史上具有举足轻重的作用。文章将介绍该项目的历史背景、信息资源组织状况,服务和技术特点,并对该项目进行客观的评价。 相似文献
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公众共享数字图书馆（DigitalLibraryoftheCommons）是一个服务公众的资源共享国际文献库,作为印第安纳大学政治理论和政策分析研究室和印第安纳大学数字图书馆项目的一个合作工程,其主要任务是免费向公众提供有关共享资源、公共集中资源和公共财产方面的国际文献。文章从项目概述、资源组织、服务及技术特征等方面对该数字图书馆进行了综合性描述和介绍,同时给出了作者的评价和建议。 相似文献
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We used an immediate recall paradigm to study the effects of list organization and semantic and grammatical features of printed stimuli on working memory capacity in deaf students with differing English language abilities. Thirty lists of five organizational types (random words, semantically related words, semantically paired words, scrambled sentences, and grammatical sentences) were presented to two groups of deaf students who differed in their proficiency in the English language. The students were required to recall the lists in writing. The results indicate that, overall, the students with higher levels of English language proficiency recalled significantly more than those with lower levels. Additionally, semantic and syntactic organization of the lists had different effects on the two groups of students. Semantic pairing aided the low-level group significantly more than the high-level group, whereas the syntactic organization of the grammatical sentences aided the high-level group significantly more. Implications for assessing language ability in deaf students are discussed. 相似文献
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SIMPLEScience是一个通过利用图像处理及分析技术（IPA）辅助青少年学习的数字图书馆,通过提供图片信息、教学计划、课程活动使得图像处理和分析能够作为一种学习工具得以使用,同时也为教育工作者在教学过程中使用图像信息提供便利条件。文章对该项目的建设及现状进行了综合性的评析,包括项目概述、数字资源及组织、技术特征、服务特点等。 相似文献
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This article examines simultaneous communication (SC) by analyzing the changes in productions of teachers who underwent a program specifically designed to address improvements in the signed modality by working with both English-based signing and American Sign Language (ASL). Based on theoretical concepts found in bilingualism, language contact situations, and conversational analysis, we focus on the process of constructing utterances by examining the teachers' spontaneous repair sequences as evidence of an active productive system. Two teachers received special instruction in SC that included both ASL and English-based signing systems as separate but equal systems. Videotapes of their use of SC, collected over four years, were analyzed for sign/speech ratio and repair sequences. Repairs were classified as repetitions, replacements, or synchronization. We found that the sign/speech ratio of both teachers increased over time. Examination of repair sequences showed that repetitions tended to occur in speech with the sign channel more completely encoded in the repair. Changes in speech tended to be accompanied by changes in sign. Errors in synchrony were relatively rare. We conclude that the simultaneous communication of both teachers was speech-driven, but error detection was largely sign-driven. The greater the automaticity of both languages, the more attention could be devoted to monitoring the coordination of the two modalities. The amount and quality of monitoring that actually occurred, however, were subject to individual differences. 相似文献