What is it? Basic code?
$${{d\alpha } \over {dt}} = k\left( {1 - \alpha } \right)^n$$
$$\alpha = {{W\left( t \right) - W_i } \over {W_i - W_f }}$$
$$k = A_o T^{1/2} \exp \left( {{{ - E} \over {RT}}} \right)$$
$${{d\alpha } \over {dT}} = {{A_0 } \over \beta }T^{1/2}\left( {1 - \alpha}\right)^n \exp \left( {{{ - E} \over {RT}}} \right)$$
$${{d^2 \alpha } \over {dT^2 }} = {1 \over \beta }\left( {{{d\alpha } \over {dt}}} \right)\left[ {n\left( {1 - \alpha } \right)^{ - 1} \left( { - {{d\alpha } \over {dT}}} \right) + {E \over {RT^2 }} + {1 \over 2}T^{ - 1} } \right]$$