Ali, Fathi; Cozzi, Guido; Impullitti, Giammario - 2009
in education attainment. Since the late 1970’s U.S. policy
makers began targeting commercial innovations more directly …, and Violante (2005).
3
commercial innovations as spurring automatically from scientific research. The idea was that once …(ω,t) = integraltextt0 I(ω,τ)dτ is the expected number of innovations in industry ω before time t. Since
in steady-state I(ω,τ) = I = n …