QUIS [electronic resource] : Queen's University Information Systems; Report of Activities for the Period Ending on 31st December, 1972.
Two computer information systems, one for reference retrieval and the other for the retrieval of numerical data on atomic and molecular physics are being developed at the Queen's University of Belfast. The reference retrieval system is based on the atomic and molecular physics section of the IN...
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| Format: | Electronic eBook |
| Language: | English |
| Published: |
[S.l.] :
Distributed by ERIC Clearinghouse,
1973.
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| Summary: | Two computer information systems, one for reference retrieval and the other for the retrieval of numerical data on atomic and molecular physics are being developed at the Queen's University of Belfast. The reference retrieval system is based on the atomic and molecular physics section of the INSPEC tapes. The tapes contain complete abstracts of the documents which are incorporated into the system, and from these a thesaurus of relevant keywords is constructed. The data base is searched using these keywords. There are over 7000 documents indexed and the thesaurus contains about 3000 terms. The numerical data system allows a user to retrieve and manipulate with numerical data. At present, the data base consists of atom-atom potentials which are extracted from the literature. For each state is stored the available potential data along with a reference to the source, an estimate of the accuracy and the range of validity. The potentials can take various forms, for example, a table of values or the parameters of a formula of known form. At present six forms of potential curve fits can be accommodated. The fits are stored in atomic units but can be outputted in the units chosen by the user. The system allows the user to manipulate with the stored data. (Author/SJ) |
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| Item Description: | ERIC Document Number: ED077537. Sponsoring Agency: Office for Scientific and Technical Information, London (England). ERIC Note: (38 References). |
| Physical Description: | 146 p. |