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Abstract

In diesem Beitrag soll ein kleiner Einblick in Ressourcen im Internet zu Umweltschutz und Chemikalien gegeben werden

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Abstract

The large number and variety of online databases in the field of environment sciences and chemistry underlies the need for a cooperative evaluation approach. Presents 2 evaluation criteria, divided into 4 headings; general criteria (size of data source, cost of 1 hour searching, updating of database, availability on other media); chemical relevant criteria (number of chemicals, identification parameters of chemicals, test set chemicals, development of chemicals), environmental relevant criteria (information parameters for chemicals, parameter development); and criteria describing environmental chemicals (use of chemicals, quality of database). A 6 number scoring system is applied to these criteria and the Hasse diagram technique is presented for 19 bibliographic online databases using these criteria. Using this technique, 'good' and 'bad' databases are identified and changes in the database content from 1995 to 1998 can be visualized

Source

Online and CD-ROM review. 22(1998) no.4, S.247-262

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Abstract

The views of 12 German experts on likely developments in online information provision via the Internet are presented in the form of extended abstracts of published articles

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Abstract

Describes an approach to retrieving environmental sciences information on the Internet using metadatabases. an inf-sheet is created in a flat file system for each resource. The contents of theses sheets are structured by different fields which hold different types of information. 2 classes of information can be distinguished: information describing the content of a resource, which is searchable, and information which links to the resources (URL). A rough automated selection is performed, humans analyze the pre selected resources, and a final selection and indexing is carried out. An algorithm which controle the validity of the meta information is implemented. Describes 2 implemented examples, the Register of Ecological Models and the Metadatabase of Internet Resources