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Database modeling performance varies across different constructs. For example, it is usually easier to model a binary relationship than a ternary relationship. Based upon the empirical performance data, ternary relationships are thought to be more complex than binary ones. This paper investigates the relationship between user modeling performance and the(More)
The characteristics of leachate from a mature landfill site were investigated over a period of six years to provide useful information for the design and management of landfill leachate. Data analysis revealed that low carbonaceous and nitrogenous pollutants can be achieved with proper groundwater and surface water management and also recirculation of(More)
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