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• W2499668734 abstract "This thesis details three case studies that center on providing users with improved access to environmental data and suggest an information model. The first case study describes the creation of a prototype metadata system CODIS (the Continental and Oceanographic Information System). It examines the creation of an effective database organization for a multidisciplinary information system and the generation of conventions and techniques to assemble and structure multidisciplinary data. These conventions included the requirement for input using previously prepared lists and the development of parallel data structures between disciplines to facilitate data entry and searching. This improved database organization was demonstrated to decrease the time needed for data entry while reducing error rates in the entered data. Data in CODIS are appraised for reliability using discipline-specific protocols. Contextual evaluation, developed in the second case study, provides insight into the potential applicability of data in databases. The NCIS (National Contaminants Information System) study examines the development of a system to create contextual metadata to be stored with archival data. Contextual evaluation is carried out by examining and documenting each step in the experimental process. This study entailed developing a set of protocols for the assessment, and creating educational tools to ensure their effective implementation. NCIS groups datasets as either experiments or surveys, with only experiments being evaluated for context. It was necessary to develop a unified organizational scheme to classify diverse research and monitoring activities into defined categories. The process was reviewed and a refined version is currently in use across Canada in the implementation of NCIS. The case study highlighted difficulties associated with the division into experiments and surveys. The third case study examines the censoring of data, a practice that involves reporting values as unknown or undetected when their existence is known. This study of the British Columbia, Ministry of Environment's Environmental Management System (EMS) examines the limitations placed on secondary users and metadata, systems by storing censored data in archives. It includes a survey of current practices in environmental analytical laboratories and investigates the statistical tools used to remediate censored data. The case study concludes that censoring of data severely limits the secondary use of otherwise high-quality data. A gap-analysis of the studied systems leads to a set of recommendations and responsibilities that highlight the critical insights derived from the case studies and emphasize shared responsibility by all partners in the data-to-decision process. The thesis then presents a three-tiered conceptual model for a general environmental information system. (Abstract shortened by UMI.)" @default.
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• W2499668734 title "A new approach to the management of environmental information" @default.
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