THE EFFECT OF MARKETING COOPERATIVES ON COST-REDUCING PROCESS INNOVATION ACTIVITY

Pre-innovation Stage
(1^st Stage)

wi(1)

3 (² A+ Pj )^{- c -1}

x

^{3t +} Pi ^- Pj

xi(1)

61

^Πi(1)

( ^{3t +} p_l^- Pj )²

181

Innovation Stage

9tψ ^- 2 + 3ψ(p_l ^- Pj )

(2^nd Stage)

r_i

3ψ(9tψ - 2)

2

r_Τ

3ψ

Post-innovation Stage

w

3ψ[(6tψ-1)P_l + (3tψ-1)Pjɔ-(9tψ- 2)(3tψ + 3cψ-1)

(3^rd Stage)

wi(3)

3ψ(9tψ - 2)

x

³ψ(P₁ ^- Pj ) + ⁹tψ ^{- 2}

i(3)

18tψ - 4

Π

(9tψ ^-1)[^{2 -}9tψ + 3ψ(Pj ^-P_i)~^

i(2,3)

18ψ( 2 - 9 tψ )²