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Rijkswaterstaat would like to check the data on groundwater composition and ground water level monitoring wells receiving from third parties before uploading to the key registration subsoil as part of the Dutch system of Base Registers (BRO: Basis Registratie Ondergrond). Together with the experts of Rijkswaterstaat the quality criteria and corresponding norms are defined. Based on this both Boolean and Fuzzy logic rules for validation are set. Rijkswaterstaat wil de grondwatersamenstellingsdata en de data over grondwaterputten die zij van opdrachtnemers krijgen eerst controleren voordat ze deze data aanleveren aan de landelijke voorziening van de Basisregistratie Ondergrond. Gezamenlijk met de experts van RWS zijn de kwaliteitscriteria en bijbehorende normen die gelden voor deze data vastgesteld. Op basis hiervan zijn tweewaardige en meerwaardige logische validatieregels opgesteld.

To date, use of the full potential of geo-information is not often applied in the daily practice of policy makers. The main questions explored by this research are: Why is geo-information not widely used in policy and how can this be improved? A conceptual framework was developed to evaluate the use of geo-information. For five cases, the use of geo-information was evaluated by means of this framework. The results of the evaluation, as well as the usefulness of the framework, are discussed. Recommendations on spatial thinking and practice, availability and quality of a spatial data infrastructure and implementation of new geo-applications in policy-making are also made.

This chapter describes an empirical study to develop a dynamic usability framework for spatial domain applications. The framework consists of five interrelated abstraction levels, which are hypothesis, typology, variables, elements, and measures. Each abstraction level has provided the theoretical basis for the design and implementation of a usability test to investigate the effects of map interactive displays on user satisfaction across two types of commercial web mapping applications. Data collected were analysed to test the hypothesis whether web mapping applications exhibiting a higher degree of usability can be associated with greater measured user satisfaction. The findings are especially useful for designers of web mapping applications and can aid in the maintenance phases of web mapping interfaces.