Digital Library Research on CCD Funded Educational Repositories

该项目对以前由美国国家科学基金会（NSF）CCD计划资助的教育知识库进行基于数字图书馆的研究。 由于这些资料库面向教育工作者在教育中使用的教育材料，它们包含一些特殊问题，可以通过这一努力加以解决。 这些NSF资助的存储库有几个不寻常的属性。 它们分布在几所不同的大学，每个网站都有一个特定的方向。 它们包含将被各种教育学科使用的材料，如计算机科学，自然和物理科学，数学家，艺术家等。 它们包含各种不同的媒体类型，包括文本、多种语言的演示程序、Java小程序和程序、图像、实时视频和计算机动画。 另一个特性是不同类型的用户将尝试访问这些网站。 他们中的一些人将是K-12教育工作者，一些人将是学院或大学教授。 这一建议有两个主要的推动力。 第一个问题是帮助教育工作者找到他们最感兴趣和最有用的材料。 有几种策略，因此有几个常用的研究问题，包括一般导航，例如，浏览以确定库中可能有什么，以及更具体的基于查询的搜索。 本提案中有解决这两个问题的努力。 教育图书馆面临的一个更为具体的问题是，这些材料在被发现和使用后的有效性。 这个问题也是本项目的一个重点。

This project performs digital library based research on educational repositories previously funded by the National Science Foundation (NSF) CCD Program. Because these repositories are oriented towards educational materials to be used by educators for education, they contain some special problems that can be addressed by this effort. These NSF funded repositories have several unusual properties. They are distributed across several different universities and each site has a specific orientation. They contain material that will be used by a variety of educational disciplines such as computer science, natural and physical sciences, mathematicians, artists, and others. They contain a variety of different media types including text, demonstration programs in several languages, Java applets and programs, images, live video, and computer animations. another property is that different types of users will try to access these web sites. Some of them will be K-12 educators and some will be college or university professors. There are two primary thrusts to this proposal. The fist is the general issue of helping educators to find the materials that are of most interest and most useful to them. There are several strategies and thus several research issues that are commonly used including general navigation, e.g., browsing to determine what might be in the libraries, and more specific query-based searches. There are efforts in this proposal that address both of these issues. An issue that is more specific to educational libraries is the effectiveness of the materials after they have been found and used. This question is also a focus of this project.