Homework effort #1

I tried to code functions that:
1) write parameter values to, and load values from, .csv files;
2) a set of functions for each of the equations in the paper (eqns 1-14,
plus another I think necessary but hidden in the text)

So far there I have not tested the functions (eg to see that they
work/what they look like), nor have I yet put them together/coded the
model in table 1.

NB I think there are at least 35 parameters not defined as parameters (a
few I left as zeros, for example), and 4 parameters they define and vary
in table 2.