Smagorinsky, J., 1960: A primitive equation model including condensation processes.

Structural equation models in the social sciences.

"A two-stage estimation of structural equation models with continuous and polytomous variables".

Later additions to primitive equation models allowed additional insight into different weather phenomena.

Advances in factor analysis and structural equation models.

Rosenzweig used ordinary differential equation models to simulate the prey population.

The equation model was originally developed by EPA (www.epa.gov).

The structural equation model estimates suggested that the intervention increased the log (odds) of condom use by 0.1818.

The relation between production and consumption in a simple seven equation model (2x2x2 model) can be shown graphically.

Within the context of a single equation model it is not possible to distinguish between these various hypotheses.