Alexandru Timotin, Florin Teodor Tãnãsescu * Structures for a Thesaurus of Technical Terminology



If in the source-publication the term is mentioned without being defined, the publication code is preceded by the symbol ^ Rãduleþ Rãduleþ Rãduleþ . The asterisk * precedes the codes of the IEC vocabularies, and the symbol § precedes the code of the Romanian standards with acronym STAS. LTR is the acronym of the Romanian Technical Lexicon [4].

4.3. Presentation forms of the thesaurus of concepts

4.3.1. Structured alphabetic list

This list presents all the terms (descriptors, synonyms, etc.), only the descriptors being followed by their semantic vicinity. The terms are accompanied, on the same row, by their references to the alphanumeric codes of the source-publications.

1) The descriptors are followed by their lexical vicinity (if any) - accepted (tolerated) synonyms, not recommended (or outdated) synonyms, abbreviations, literal symbols, and, if possible, their translations in other languages (preceded by a capital letter, for instance F for French and R for Romanian). The descriptor can be followed on the same row by the code of its affiliation domain. After the lexical vicinity the relations which define the semantic vicinity follow in successive rows: ascendant, associative, and descendant ones. 

	Example:				(not displayed explanations)
magnetic flux /01/ *121, *901			(/domain/ + references to sources)
=! magnetic line number				(not recommended synonym)
F: flux magnétique *121, *901			(French descriptor + references)
R: flux magnetic LTR				(Romanian descriptor + reference)
   < G flux of a vector quantity		(generic concept)
   < L magnetic field, 1 [physical phenomenon]	(larger-area concept)
   << O magnetic flux density			(originating concept)
	<-> electric flux			(associated concept)
	   > S flux linking a coil		(specific concept)
		>> S flux linking a turn	(specific concept)
		>> R weber <Wb>			(restricted-area concept)
		 > D magnetic circuit		(derived concept: device)
		 > D inductance			(derived concept: quantity)
	(See also Table 2.)

2) The non-descriptors are accompanied only by the reference to the sources and to the respective descriptor. 

Examples:					(not  displayed explanations)
absolute permittivity of vacuum *121 ^ SL	(synonym + references)
=> electric constant				(reference to the descriptor)
.......................................................
specific capacity of vacuum			(not recommended term)
!= electric constant				(reference to the descriptor)
.......................................................
&vepsilon;q *121 ^ SL				(literal symbol + references)
L = electric constant				(reference to the descriptor)
.......................................................
current, electric				(permuted form)
-> electric current				(unilateral reference)

4.3.2. The list of the semantic fields

A semantic field is a group of concepts related either by some logical relations or by some factual ones within the framework of a certain domain of application, subordinated to a certain top concept. In the proposed structure of a technical thesaurus the top concepts belong to a special category referred to as zone(Table 3).

A form of presentation of a thesaurus can also be an alphabetic list of the descriptors of these top concepts, each of them being followed by the respective semantic field which develops its descending on more levels. The number of levels can be fixed or not, in the last case the descending being terminated when there is no more descendant concept (in the limits of the considered domain).

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