While linear functions are easy enough to define, the term “nonlinear” takes in everything else. “There’s this famous quote — I’m not sure who said it first — that the theory of ...

Proper handling of continuous variables is crucial in healthcare research, for example, within regression modelling for descriptive, explanatory, or predictive purposes. However, inadequate methods ...

However, there may be circumstances where the relationship between the variables is non-linear (i.e., does not take the shape of a straight line), and we can draw other shaped lines through the ...

Physicists have long computed nonlinear response functions in the frequency domain. In this approach, one builds so-called multipoint correlation functions—calculations that combine information at ...

For example, nonlinear circular dichroism with a very high SHG circular dichroism value of above 52% was achieved in a metasurface ... Linear and nonlinear Fano resonance on two-dimensional ...