DR. MARIO ARTURO RUIZ ESTRADA
83
REVISTA ACADÉMICA ECO (23) : 73-92, JULIO-DICIEMBRE DE 2020
market actors before and after implementing coffee prices. The NCP-Function
performance depends on the location of the surface. The location of this NCP-
Function can show four possible performance results: coffee market stability (see
Expression 23), coffee market stagnation (see Expression 24), coffee market with
high vulnerability (see Expression 25), and coffee market in constant crisis (see
Expression 26):
☼
β*
╬ ☼
+βa
╬ ☼
+βb
╬ ☼
+βc
╬ ☼
+βz (23)
{
if
∆+β*
╬ R+ then the surface ╬ the coffee market stability performance
}
☼
β*
╬ ☼
+βo = 0
╬ ☼
+β1 = 0
╬ ☼
+β2 = 0
╬ ☼
+β3 = 0
(24)
{
if
∆ Y*
╬ 0 then the surface ╬ the coffee market stagnation performance
}
☼
β*
╬ ☼
±βo
╬ ☼
±β1
╬ ☼
±β2
╬ ☼
±β3
(25)
{
if
∆Y*
╬ R+/- then the surface ╬ the coffee market stagnation performance
}
☼
-β*
╬ ☼
-βo
╬ ☼
-β1
╬ ☼
-β2
╬ ☼
-β3
(26)
{
if
∆β*
╬
R-
then the surface
╬ the coffee market with high vulnerability
performance
}