This paper reviews the role of uncertainty in the identification of mathematical models of
water quality and in the application of these models to problems of prediction. More …

Uncertainty and sensitivity analysis techniques for use in performance assessments for
radioactive waste disposal are reviewed. Summaries are given for the following techniques …

There would be little disagreement among water quality modelers with the opinion of Orlob
(1983a) that virtually all the significant developments since the (now) classical work of …

It is commonly agreed between modeling methodologists that model validation is one of the
most important stages in the model building process. Many papers addressing this subject …

The feasibility of operationalizing the process of translating a signed digraph (or causal
diagram) to an associated differential equation model is demonstrated. Starting with the …

The sensitivity of an ecosystem simulation model, ELM, to variation in parameter values is
studied by perturbing parameters in groups defined by a fractional factorial design followed …

A procedure of extended sensitivity analysis for simulation models is developed which is
applicable to the situation in which input uncertainties are specified in a multiplicative (rather …

In this paper, I present constructs that enable simplified translation of CLD's (Causal Loop
Diagrams) into SFD's (Stock and Flow Diagrams). As conventionally rendered, there are too …

This paper contains a definition of a measure of the uncertainty inherent in the output of a
mathematical model. The definition is essentially a formalisation of the kind of uncertainty …

Theoretical lake ecosystem models are often constructed by synthesis of proven and
hypothesized mechanisms. These include parameters that are determined through visual …