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George A. Wilkins
Honorary Research Fellow, Mathematics Department, University of
Exeter, Exeter EX4 4QE, UK, e-mail:
G.A.Wilkins@exeter.ac.uk
The Universal Decimal Classification system (UDC) is widely used throughout the world for the arrangement of books and index cards in libraries and of entries in abstract journals. Its main advantage is that it provides a way of specifying the contents and form of documents on all subjects and of all kinds in a format that is language-independent, flexible, concise and unambiguous. Unfortunately it is no longer used by any major abstracting service in astronomy or physics. Nevertheless, it is considered that the revision of class 52 for astronomy to take into account developments and changes over the past 20 years should be completed as soon as possible.
A new schedule for UDC 52, together with an index that includes relevant terms in other fields of science and technology, would clearly be of benefit to all current users, for many of whom astronomy is only part of the subject area of interest. It would also be of value to astronomy librarians and to astronomers who are looking for information outside their specialised fields of expertise, since it would provide an extensive vocabulary of terms and an unambiguous indication of their significance and relationships to each other.
The Astronomy Thesaurus (Shobbrook & Shobbrook 1993) is much more up-to-date than the schedule for UDC 52, but nevertheless it needs regular maintenance to take into account new terms and also new knowledge about the relationships between some of the terms. The Thesaurus was used as one of the sources of terms to be covered by the revised and expanded schedule for UDC 52 and this drew attention to need for some changes as well as for additions. The Thesaurus and UDC 52 both show the relationships between terms and they may be used as complementary aids since each has functions that are not provided by the other. It is clearly desirable that they should be compatible with each other in their overlap and so it would be appropriate for their maintenance to be carried cooperatively.
I first used the Universal Decimal Classification system in 1949 when I was a research student at Imperial College, London. At that time UDC was used in the Science Museum Library (which also served as the College library) and in Physics Abstracts. I later found that it was used in the library of the Royal Greenwich Observatory (RGO) at Herstmonceux Castle and in the Russianlanguage abstract journal produced by VINITI, and I came to appreciate the value of its language-independent codes.
In the early 1970s I was asked to represent the RGO on a working group for the revision of the schedule for astronomy in 521-525. This group, which met for a few days in London, included D. A. Kemp, the librarian of the Royal Observatory at Edindurgh (ROE), who is best known for his Bibliographical Guide to Astronomy and Astrophysics (Kemp 1970), and representatives of VINITI and the British Standards Institution (BSI), which publishes the English-language editions of UDC. Kemp was the prime mover in the development of a completely revised schedule, which made extensive use of hyphen auxiliaries to identify, for example, the properties and features of astronomical bodies. These auxiliaries also allowed the cancellation of 525 for star catalogues etc. The class 522 for practical astronomy was so out-of-date that it was replaced by a new subdivision of 520.
The new schedule for class 52 was published by BSI in 1977; it included a new schedule for geodesy in 528, instead of 526, but it left nautical astronomy in 527 and chronology in 529 largely unchanged. An alphabetical index of terms was included with the schedule. Kemp also drafted a guide to the use of UDC for astronomy, and I started to edit it for publication, but the project was abandoned when Kemp left ROE and I was given more administrative duties.
My attempts to initiate another revision ten years later failed and so after my retirement from the RGO in 1989 it was agreed by the UDC Consortium that VINITI should take responsibilty for the revision. Unfortunately, it appears that, as a result of the political changes in Russia, VINITI no longer publishes its abstract journal and no work has been done on the revision. I made enquiries about the status of the revision in about 1994 and I was encouraged to try again. I obtained the formal support of IAU Commission 5 for the task, but I could not find anyone who was prepared to take an active part in the revision. Robyn Shobbrook, who was herself still working on the Thesaurus, organised a meeting about UDC 52 at LISA II at Garching and this led to the formation of the e-mail group known as the `Friends of UDC 52'.
Since 1994 I have endeavoured to draft a revised schedule and index that would cover explicitly all the terms that are likely to be used in the cataloguing of astronomical books and papers and in the retrieval of information by the use of subject indexes or by the use of computers to search abstracts and text. This has taken much more time than I had expected, but as I am retired I have been able to treat this as an intellectual challenge and I have not had to account for my time to any employer or funding agency!
About a year ago, I reached the point where I realized that I could not usefully go any further until I had had criticisms and contributions from both astronomers and librarians and until I had received confirmation that my draft was broadly acceptable to the Editor of UDC and to the UDC project manager in BSI. Some changes will be required since, for example, it is UDC policy to make use of common auxiliaries wherever possible, whereas I have tended to introduce special auxiliaries that better match the particular usages in astronomy. There is, however, no point in my attempting to make such changes until I am assured that several other persons are willing to participate in the tasks that I have outlined in following notes on the status of the revision.
The following work has been completed:
The following tasks remain to be done:
As I am now approaching `three-score and ten' and have other projects that I would like to complete while I am still fit and active, I would be delighted if someone else would take over from me the responsibility for organising the completion of the revision. I realize, however, that this is a service job that will not be of immediate and obvious benefit to any particular organisation; rather the benefits will be spread widely, but thinly. Consequently, I am prepared to try to see the project through to completion, but only if enough other members of the astronomical community are willing to participate.
Any person who would like to assist in any part of these tasks, or who knows of anyone who would be prepared to help, is invited to contact me and become a `Friend of UDC 52'. It is open to persons who play an active role in the revision to become members of the IAU Commission 5 Task Group on the Revision of UDC 52. My e-mail address is g.a.wilkins@exeter.ac.uk .
Kemp, D. A. 1970, Astronomy and astrophysics; a bibliographical guide, London: Macdonald Technical & Scientific
Shobbrook, R. M. & Shobbrook, R. R. 1993, The Astronomy Thesaurus, Epping, Australia: Anglo-Australian Observatory
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