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The Library of Congress National Digital Library Program (NDLP) is assembling a digital library of reproductions of primary source materials to support the study of the history and culture of the United States. Begun in 1995 after a five-year pilot project, the program began digitizing selected collections of Library of Congress archival materials that chronicle the nation's rich cultural heritage. In order to reproduce collections of books, pamphlets, motion pictures, manuscripts and sound recordings, the Library has created a wide array of digital entities: bitonal document images, grayscale and color pictorial images, digital video and audio, and searchable e-texts. To provide access to the reproductions, the project developed a range of descriptive elements: bibliographic records, finding aids, and introductory texts and programs, as well as indexing the full texts for certain types of content. The reproductions were produced with a variety of tools: image scanners, digital cameras, devices that digitize audio and video, and human labor for rekeying and encoding texts. American Memory employs national-standard and well established industry-standard formats for many digital reproductions, e.g., texts encoded with Standard Generalized Markup Language (SGML) and images stored in Tagged Image File Format (TIFF) files or compressed with the Joint Photographic Experts Group (JPEG) algorithm. In other cases, the lack of well established standards has led to the use of emerging formats, e.g., RealAudio (for audio), QuickTime (for moving images), and MrSID (for maps). Technical information by types of material and by individual collections is also available at this site.〔National digital library program. (n.d.). Retrieved September 21, 2015, from Library of Congress website: http://memory.loc.gov/ammem/dli2/html/lcndlp.html〕 ==Vision== The Library of Congress is trying to extend its brick and mortar library services to include services to the entire web. While the original Library was focused on the needs of the US Congress, dealing with the whole world through the Internet is something it is still struggling with. The collection includes an eclectic mix of documents, images, videos and sound recordings. Images include maps, sheet music, handwritten documents, drawings and architectural diagrams. The goal of a Library of Congress Internet Library should be to provide access to those materials unique to the Library of Congress, and a clear guide to any internet materials related to the United States. If you search "digital library project" +"library of congress" on the web, you will get a cluttered view of what the Library of Congress is providing. The Library of Congress Global Gateway at site:international.loc.gov has about 200,000 documents currently. The main page provides links but no context. The American Memory at site:memory.loc.gov has about 350,000 documents. The main page is similarly vague. An Internet Library is more than a haphazard collection of materials on an internet server. It serves an entire world, not just those who can afford subscription feeds, or who receive grants through US government agencies. Likewise it does not discriminate against very young users, or languages other than English. Its purpose, scope and contents are readily understood at any location within the site. It is not needlessly repetitive. It recognized the value of the users' time, and makes every effort to constantly improve performance and the users' success. Because materials are available to anyone – of any age or background, in any country – an Internet Library needs to be more open and inclusive. LoC is just beginning to serve the needs of the world's internet users. Topics Mentioned: *America – Industry, Technology, Cities, Towns, Culture, Literature, Performing Arts, Music, Folklife, Architecture, Landscape, Environment, Sports, Recreation, *America – Government, Military, Law, Religion, Advertising, Conservation, *America – Presidents, Women's History, African American History, Native American History, American Expansion, Immigration, War *Missing – Sciences, Universities, Occupations, American Resources other than LoC, Agriculture, Arts, *Missing – Wiki tools, User communities to improve the site, Internet Maps, Content Mentioned: Bibliographic databases, Online Catalogs, current issues of favorite journals, new acquisitions, indexes to journal literature, references from scholarly publications, lists of readings, classroom presentations, lesson plans, "valuable materials", articles, textbooks User Categories Mentioned: School teachers, scholars, students, internet users, User Purposes Mentioned: Term papers, presentations, reports, online projects,〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「National Digital Library Program」の詳細全文を読む スポンサード リンク
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