A model of internal innovation population relati...
According to the Logistic model：
gtrepresents the growth rate of population in stage t，Nt indicates the number of individuals in stage t.Nt／Krepresents the amount of resources occupied by the population in stage t，the per unit occupancy of resources in the innovation population is 1／K.
because：
so：
ΔN（t） represents the changed number of individuals in a population in stage t.β1＝α，β1＞0，it represents the synergy effect within populations.β2＝-α／K，β2＜0，it represents the internal competition effect，it is called coefficient of internal competition or coefficient of population density.
Formula（2）deformation：
In the population，the synergistic effect is the main factor，and the innovation resources can support the increase of the number of individuals in the population.
The competition effect is the main factor in the population，and the innovation resources are difficult to support the increase of the number of individuals in the population.