While I do spend lots of time pushing the idea of linear approximations on my students, we do need nonlinear functions to describe most interesting physical phenomena.

The Southern Economic Journal features original, refereed scholarly articles in all areas of economics as well as contributions on the pedagogy of economics. The journal also contains occasional ...

For this, you also need non-linear thresholding functions that adjust the weights between the layers of neurons.

We demonstrate the implementation of a variety of non-linear models that are more appropriate for modeling plant growth than are the traditional, linear, models.Ecological inference is frequently ...

Six non-linear growth functions were fitted to tree height-diameter data of ten conifer species collected in the inland Northwest of the United States. The data sets represented a wide range of tree ...