Such models are "natural" because a superpartner of the top-quark with a mass well below one TeV is actually sufficient to keep the Higgs mass naturally light.
Two concrete examples of using this method to Shanghai's construction projects show that the resulting models are natural, geologically reasonable and close to the actual stratigraphic distribution.
Network-based models are natural generalizations of stochastic mass action models to stochastic dynamics on arbitrary interaction networks.
Such a model is natural in a production environment where stocking is a complex operation, and appears as a subproblem in more general network design problems.
All lead variables in the models were natural-log transformed.
The parameters for this model are natural numbers b, k, and n.
To consider periodic environmental factors acting on a population model, it is natural to study the model subject to periodic coefficients.
For our model, it is natural to consider vaccination rate coefficient as a control to reduce the disease burden.
For a two-period model it is natural to take the investment criterion as applying to the aggregate two-period return.
Thus, it is natural to model these diseases by seasonally forced epidemiological models.
