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

Pre-innovation

w

4t-12t²ψ+(32t²ψ²-8tψ-3) p_C+4tψp_I

Stage (Stage 1)

wC(1)

( 4 tψ + 1)(8tψ - 3)

w

t-4t²ψ+(4tψ-3) p_C+4tψp_I

wI(1)

8 tψ - 3

8tψ[3tψ ^- 1 + ψ(pc ^- Pi )]

xC(1)

( 4 tψ + 1)(8tψ - 3)

8t²ψ²+4tψ-3+8tψ²(p_I-p_C)

xI(1)

(4tψ +1)(8tψ - 3)

Innovation

г*

^8t[³tψ ^- 1 + ψ(pc ^- Pi )^]

Stage (Stage 2)

r_C

( 4 tψ +1)(8 tψ - 3)

г*

t(8tψ ^- 5) ⁺ [(⁸tψ + ³)(Pi ^- Pc )^]

r_I

( 4 tψ +1)(8 tψ - 3)

t(32tψ -13) + 3(pi - pc )

r_T

( 4 tψ +1)(8 tψ - 3)

Post-innovation

_   8t[³tψ ^- 1 + ψ(pc ^- Pi )^]

Stage (Stage 3)

wC(3)

Pc         (4tψ +1)(8tψ - 3)

w

-5t +18t²ψ-16t³ψ³+ (16t²ψ²-2tψ-3) p_c +2tψ(8tψ-1) p_i

I(3)

( 4 tψ +1)(8 tψ - 3)

x

(8tψ + ³)[^3tψ ^- 1 + ψ(pc ^- Pi )]

xC(3)

( 4 tψ +1)(8 tψ - 3)

ψ[t(8tψ ^- 5) ⁺ (⁸tψ + 3)(Pi ^- Pc )^]

xI(3)

( 4 tψ + 1)(8tψ - 3)