Power flow analysis has become an indispensable tool in ensuring the reliable design, operation and optimisation of electrical grids. By solving a set of nonlinear algebraic equations, engineers are ...

In this paper we consider certain nonlinear and constrained variational problems that occur in the theory of search. The problems are definitely of a nonclassical variety, but, by using a device of R.

In a variety of problems involving models from genetics, latent-class analysis, and missing data, I apply a log-linear model to an indirectly observed frequency table. Current algorithms for ...