Development of Tsunami Digital Library by International Collaboration

我们在日本开发了海啸数字图书馆（TDL），可以存储和管理有关海啸的文件，报纸文章，海啸上升模拟，实地工作数据，视频等。每个对海啸数据感兴趣的人都可以通过互联网获得相关信息。我们提出了一项关于海啸灾害的公众教育，利用TDL对受海啸袭击的沿海地区的公民或游客进行教育。我们可以通过点击TDL地图上的海岸地区来可视化海啸灾害的事实。我们开发了必要的TDL环境来支持这样的公共教育，如下：(1)关键字检索stdl使用XML技术。包含图形、图片和表格的文档以XML结构表示，并在XML数据库系统（Oracle 10g）下进行管理。这些文档的模式取决于文档、报告或报纸的类型。因此，每个文档都有不同的模式。为了跨整个文档进行遍历检索，有必要使用统一的模式，该模式集成了XML文档的所有模式。我们用XML设计了一个集成模式，并通过在Web上输入关键字，实现了从TDL中检索请求数据的系统。(2)手机检索当游客参观海啸灾区时，大量海啸灾害的事实会自动从TDL中检索出来，显示在手机上，以吸引游客的注意。因此，有必要检索游客所在地方的地区名称。我们在使用NTT Docomo手机的i-mode时，从区号中获得了地点信息。手机的显示字符数量和计算能力都有限制。然后，我们必须提交一些值得注意的内容，包括尸体的数量，被摧毁的房屋和船只，以及文件的摘要。

We have developed Tsunami Digital Library (TDL) which can store and manage documents about tsunami, news paper articles, tsunami run-up simulations, field work data, videos, etc., in Japan. Every person interested in data about the tsunami can get the information through the internet.We have proposed a public education on the tsunami disaster which utilizes TDL for citizens or tourists in coast areas struck by the tsunami. We can visualize the fact of tsunami disasters by clicking coast areas on the map in TDL.We have developed the necessary TDL environments to support such public education as follows :(1)Keyword retrievalsTDL uses XML technology. The documents containing figures, pictures and tables are represented in XML structure, and managed under an XML database system (Oracle 10g). The schemas of these documents depend on the type of the documents, reports or newspapers. Therefore, each document has a different schema. In order to make a traversal retrieval crossing whole documents, it is necessary to use a unified schema which integrates all schemas for XML documents. We have designed an integration schema by XML, and implemented the system to retrieve some requested data from TDL through keyword input on Web.(2)Retrieval by mobile phonesWhen tourists visit the coast area struck by the tsunami, a lot of facts of the tsunami disasters are automatically retrieved from TDL and displayed on mobile phones to attract their attention. Therefore, it is necessary to retrieve the region name of the place where tourists are in. We have obtained the place information from the area code when we use the i-mode of NTT Docomo mobile phones. There are restrictions of the number of display characters and the computing powers in mobile phones. Then, we have to submit some remarkable contents, concerning the number of bodies, destroyed houses and ships, and a summary of the document to mobile phones.