Data/hora: 10/06/2024 07:46:15

Biblioteca(s): 	Embrapa Cerrados; Embrapa Unidades Centrais.	
Data corrente: 	24/07/1998	
Data da última atualização: 	11/12/2007	
Autoria: 	LONGO, R. M. J.	
Título: 	A study on information systems in agricultural sciences: data bases and selective dissemination of information.	
Ano de publicação: 	1978	
Fonte/Imprenta: 	Halifax, Canada: Dalhaosie University School of Library Servier, 1978.	
Páginas: 	232p.	
Idioma: 	Inglês	
Notas: 	Tese Mestrado.	
Conteúdo: 	Selective Dissemination of Informaton services require an understanding of the systems and data bases available. Studies have been conducted in order to try to determine the benefits of having both the AGRICOLA and CAB data bases as a means of providing a current awareness service for the usert community of Embrapa. Three experiments were carried out in an attempt to measure serial titles overlap, languages covered by both data bases, most frequent serial titles, and coverage of non-serial publications. The overlap between the data bases shows that AGRICOLA has a higher percentage of duplication but the presence of both in the same SDI service is nevertheles justifiable. The coverage of languages does not differ appreciably from one system to the other, and the predominance of the English language is evident, bieing thus considered the corrier language for both data bases. The most frequent serial titles in samples do not necessarily represent either the most frequent entries in both data bases as a whole or the most important in their subjet fields. A descriptive comparison between SDI services in Canada, Europe, and the U.S.A. has been made in order to observe features, hardware, software, etc. and their compatibility to Embrapa`s own SDI service. Eight out of the ten services described have software compatible with Embrapa`s hardware. IITRI/CSC is one of the most sophisticated services in tnat it almost entirely uses interactive terminals in its SDI service. RIT has one of most constantly implemented sofware pacckages. Finally, the study shows that manual current awareness service. RIT has one of the most constantly implemented sofrware packages. Finally, the study shows that manual curreent awareness services are still in use, mainly to complement the computer-based SDI services in subject areas where automated information systems fall short of meeting needs.    	
Palavras-Chave: 	Base de dado bibliográfica; Data base bibliographic; Disseminação seletiva; Informação; SDI; Selective dissemination; Sistema; System.	
Thesagro: 	Agricultura; Base de Dados; Disseminação Seletiva da Informação; Sistema de Informação.	
Thesaurus Nal: 	agriculture; databases; information; information systems.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Unidades Centrais (AI-SEDE)	
Exemplares: 	AI-SEDE - (1444-1) - EMB - TS - -- - 78/076 - LON - 1978.00076 - DIS
CPAC - (16668-1) - ADD - TS - -- - T041/78 - LON - T041/78 - DIS