DDS.pptx

The prime objective of any library is to meet the information requirements of its clients most effectively. To meet this objective, the library builds the collection in a planned manner and offers a variety of information services to inform the users what is available and whatever latest has been published in their areas of interest. All these services generate requests from the users for the original documents. The service that supplies the required document to the user on demand is known as Document Delivery Service.

1. Document Delivery SErvice Dr.P.PADMA Assistant Professor DOLIS

2. Introduction The prime objective of any library is to meet the information requirements of its clients most effectively. To meet this objective, the library builds the collection in a planned manner and offers a variety of information services to inform the users what is available and whatever latest has been published in their areas of interest. All these services generate requests from the users for the original documents. The service that supplies the required document to the user on demand is known as Document Delivery Service .

3. What is Document Delivery Service(DDS)?Or Document Supply Service Delivery Service (DDS) is actually concerned with the supply of documents to the users on demand, either in original or its copy in print or non-print form, irrespective of the location and form of the original. DDS is a very important service, since the value and importance of other access services are directly dependent on the efficiency of this service.

4. Contd.. Online Dictionary of Library and Information Science defines DDS as “Provision of published or unpublished documents in hardcopy, microform, or digital format, usually, for a fixed fee upon request.”

5. Growth and Development Earlier, the DDS was limited to the lending of required documents to the user for a specified period of time by the library from its own collection and if not available within the library, then borrowing it from other libraries on interlibrary loan and lending it to the user. With the introduction of xerography in mid 1950s and large scale use of photocopiers in libraries by 1970s, the DDS was not just confined to the lending of documents, but documents could be duplicated and permanently given to the users. The libraries started using photocopiers to supply copies of the required documents, such as journal article or a few pages of books for DDS purposes

6. Need of Document Delivery Services

7. Contd..

8.   Efficiency of Document Delivery Service

9. Speed The methods, of receiving requests, processing the requests and mode of delivery of fax, electronic-mail or online systems. Online request and delivery of the document is the fastest, though delivery of documents in this mode is expensive. However, the speed of supply of documents depends on many other factors such, as time taken to locate the document from within the institution and if not available, then, time taken to find its location, transmitting the request, processing of the request by the library supplying the document, receipt of the document by the requesting library and finally delivering the document to the user. All these factors affect the speed of supply. With the availability of online databases, online public access catalogues, etc., it is possible to search for information from remote locations on the networks, request the selected document and receive the required document electronically almost instantly. Electronic document delivery systems offer a great promise. Here, speed is the major attraction. However, copyright issues and high cost are some of the constraints which are attracting the worldwide attention

10. Cost

11. Satisfaction Level

12.   Mode of Document Delivery service Document Delivery means supplying documents ( Copies in print or digital format) are delivered through mail/ courier or other way. Document delivery to end users implies three types of operations Document identification Document location Document procurement

13. Document Identification It requires the bibliographical details of the documents such as author, article title, source, volume, and pages correctly in a given format. User can verify such details by searching the web or the relevant databases.

14. Document location It identifying the library holdings the documents under reference. User may search using union catalogues available form library networks

15. Document procurement It implies writing to the relevant libraries service providers for delivery documents. There are several modes of documents procurement Requesting documents from the holding library/library networks Requesting documents from document delivery service providers Searching the web for digital copies of the documents for free access  

16. Document Supply Centres In response to the need for specialized document supply centres, many nationalized centres came up in the world offering DDS service in planned manner. Some of the document supply centres operating in the world are British Library Document Supply Service (BLDSS) U.K.; National Library of Medicine, USA; National Institute of Science Communication and Information Resources (NISCAIR), New Delhi, India; Document Delivery Service of National Library of Australia; and Document Delivery Service of INFLIBNET, Ahmadabad, India. These centres offer DDS drawing upon the resources ranging from comprehensive centralized collection to decentralized collection.

17. Impact of Technology The advent of computers, scanners and telecommunication technologies in 1980s made it possible to store the documents in electronic form and transfer the same electronically anywhere via telecommunication networks almost instantly. Many libraries and information centres started using this technology to deliver the documents. This greatly increased the speed of the service. The availability of full-text e-journals and e-books on the Internet and emergence of World Wide Web in 1990s had most significant impact on the DDS. The scope of DDS expanded beyond the traditional libraries and document delivery centres. The database producers, e-journal publishers, commercial online vendors, commercial e-journal service providers and aggregators also started delivering documents electronically.

18. Electronic Document Delivery Systems The systems employing electronic technology for receipt of requests and supply of documents electronically over telecommunication networks are called Electronic Document Delivery Systems (EDDS). This technology uses series of devices that scan paper copy of the document, capture the document image and store it in digital format. The digital copy of the document is sent electronically via e-mail, fax or other document delivery software like “Ariel” to the requester. Online Dictionary of Library and Information Science defines Electronic Document Delivery as “The transfer of information traditionally recorded in physical medium (print, videotape, sound recording, etc.) to the user electronically via e-mail or World Wide Web. The libraries employ digital technology to deliver the information contained in the documents and files placed on reserve and requested via inter library loan.”

19.   Emergence of E-Journal Consortia At present most of the scholarly peer reviewed journal are available in print as well in electronic form. E-journals, with built in search facilities, multimedia capability and remote access, are in great demand by the library users. But ever shrinking budget of the libraries and exponential growth of e-publications and their escalating cost are making it difficult for individual library to meet this demand. So, many libraries are joining to form a consortium for subscription to ejournals . With Internet access to e-journal, a user can search and browse table of content of a journal, view abstract of the selected article and if desired can browse and download the full-text article instantaneously on his/her computer.

20. Contd… Consortium based subscription to e-journals and electronic full text databases are picking up by libraries in India. At present over 10 national level consortia are operating in the country. Some of them are INDEST-AICTE Consortium, UGC-INFONET Digital Library Consortium, and National Knowledge Resource Consortium of e-resources of CSIR and DST. This has resulted in lesser demand for printed journal articles. Because of e-Journal consortia, most of the document supply centres are witnessing decrease in demand for delivery of documents, particularly of journal articles

21. Electronic Document Delivery Systems (EDDS) – Examples

22. Conclusion Document Delivery Services provides the pinpointed, proper and very quick service to the user. Document delivery service is dm culminating point of all the access services and plays a vital role in information access and dissemination. While other library services help the user to identify the document he needs, this service actually locates the document and delivers it to the user. Modem computers and telecommunication technologies are exerting great impact on document delivery systems. Emergence of CD-ROM as the cheapest storage medium for large Volume storage, has resulted in the production of a large number of full-text databases on CD-ROM which are increasingly being used for document delivery purposes. The integration of online, CD-ROM and fax technologies have set new high-tech trends in document delivery. Electronic' Document Delivery Systems are emerging which facilitate online searching, online ordering and online delivery of document.