Hi everyone. I am doing research about what happens to light energy after it has been absorbed by a leaf but before it has been used in the photosysnthetic reactions. For that I need to use system of 3 nonlinear ordinary differential equations. My dissertation title is : A hybrid numerical scheme for a system of nonlinear ordinary differential equations. A Model from the paper: A simple model of light use in Photosystem II Background of model: Dynamic flow of light energy through photosystem II under light changing condtions. This is my first time writing dissertation, so i am having problem how to structure my project because some how i have to link up dissertation title and model of paper together properly. how can i use system of nonlinear ordinary differential equations in simple model of light use in Photosystem II? it can be either with numerical results or analytic solutions. Has someone done this kind of research before? any good reference/books will be useful for me.