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APÉNDICE E
CÓDIGO DEL PROGRAMA
E.1 CÓDIGO DEL PROGRAMA
A continuación se presenta el código del sistema, el cual se encuentra en lenguaje Visual
Basic.
E.1.1 INICIALIZACIÓN DE VARIABLES
Las variables siguientes corresponden a todo el proceso de simulación-optimización y de
los dos modelos de inventarios.
Public CTA As Double
Public QMejor As Double
Public sMejor As Double
Public T() As Double
Public Qw As Long
Public sw As Long
Public SSw As Long
Public PCTA(8) As Double
Public AuxP As Integer
Public Conta As Integer
Public VecQs(2, 8) As Double
Private VecCTA As Double
Public SolActual As Double
Public SolMejor As Double
Public QActual As Double
Public sActual As Double
Public DA As Double
Public Const inc As Double = 0.1
Public Final As Integer
Public Eventos(2) As Integer
Public bandera As Bolean
Public NumPed As Integer
Public D As Integer
Public TED As Integer
Public TEP As Integer
Public k As Integer
Public INVF As Integer
Public II As Integer
Public Ca As Single
Public Co As Single
Public Cc As Single
Public Q As Long
Public s As Long
Public SS As Long
Public Reloj As Integer
Public Retraso As Boolean
Public Perdida As Boolean
Public j As Integer
Public m As Integer
Public CAT As Single
Public RelojAux As Integer
Public AGOT As Integer
Public AGO As Integer
Public NumDem As Integer
Public NumRev As Integer
Public n As Integer
Public RECEPAUX() As Integer
Public ATED() As Integer
Public Bandera4 As Boolean
Public Bandera5 As Boolean
Public txt1 As Double
Public txt2 As Double
Public txt3 As Double
Public txt4 As Double
Public txt5 As Double
Public txt6 As Double
Public Simulacion As Boolean
Public ListD As Integer
Public ListTEP As Integer
Public DIARIO As Integer
Public c As Integer
Public Ite As Integer
Public BanIte As Boolean
Public BanQs As Boolean
Public BanNS As Boolean
Public estocas As Boolean
Public Cont As Integer
E.1.2 MODELO (s,Q)
Visual Basic Applications trabaja a través de unidades de trabajo denominadas como
macros o rutinas, las siguientes rutinas corresponden al simulador del modelo (s,Q).
Public Sub Simula()
With Captura
Ca = .txtCa.Value
Co = .txtCo.Value
Cc = .txtCc.Value
II = .txtII.Value
ListD = .ListBox1.ListIndex
ListTEP = .ListBox2.ListIndex
If ListD = 0 Then D = .txtD.Value
If ListTEP = 0 Then TEP = .txtTEP.Value
TED = 1
PINV = .txtII.Value
Retraso = .FrameQr.OptionRetraso
Perdida = .FrameQr.OptionPerdida
DA = .txtDA.Value
End With
CTA = 0
CAT = 0
COT = 0
CCT = 0
Reloj = 0
Final = 313
bandera = False
NumPed = 0
INVF = II
m=0
c=0
n=1
RelojAux = 0
NumDem = 1
NumRev = 1
Bandera4 = True
AGO = 0
AGOT = 0
ReDim RECEPAUX(1)
RECEPAUX(1) = Final + 1
Eventos(1) = TED
Eventos(2) = Final + 1
SigEvento
End Sub
Private Sub SigEvento()
RelojAux = Reloj
If Eventos(1) <= Final And Bandera4 = True Then
m=m+1
ReDim Preserve ATED(m)
ATED(m) = Eventos(1)
End If
If Eventos(2) <= Final And Bandera5 = True Then
n=n+1
ReDim Preserve RECEPAUX(n)
RECEPAUX(n) = Eventos(2)
End If
If ATED(NumDem) < RECEPAUX(NumRev) Then
Reloj = ATED(NumDem)
Else
Reloj = RECEPAUX(NumRev)
RECEPAUX(NumRev) = Final + 1
End If
Bandera4 = False
Bandera5 = False
ChecaReloj
End Sub
Sub ChecaReloj()
Divi = Reloj / 6
If Reloj = Eventos(2) Then
Recepcion
Demanda
Revision
If Divi = Int(Divi) Then CAT = CAT + Ca * (INVF) / 365
If Reloj = 313 Then
CostoTotal
Else
SigEvento
End If
Else
Demanda
Revision
If Divi = Int(Divi) Then CAT = CAT + Ca * (INVF) / 365
If Reloj = 313 Then
CostoTotal
Else
SigEvento
End If
End If
End Sub
Public Sub Demanda()
GeneraD
Bandera4 = True
Eventos(1) = ATED(m) + 1
If Eventos(1) <= Final Then NumDem = NumDem + 1
CAT = CAT + Ca * (Reloj - RelojAux) * (INVF) / 365
Select Case INVF
Case Is >= D
INVF = INVF - D
Case Is < D
AGO = AGO + (D - INVF)
AGOT = AGOT + (D - INVF)
INVF = 0
End Select
End Sub
Public Sub GeneraD()
Select Case ListD
Case 1
Range("n1").Formula = "=RiskBinomial(" & txt1 & "," & txt2 & ", RiskTruncate(0, ))" D
= Range("n1").Value
Case 2
Range("n1").Formula = "=RiskNegbin(" & txt1 & "," & txt2 & ")"
D = Range("n1").Value
Case 3
Range("n1").Formula = "=INT(RiskGamma(" & txt1 & "," & txt2 & ")"
D = Range("n1").Value
Case 4
Range("n1").Formula = "=RiskHypergeo(" & txt1 & "," & txt2 & "," & txt3 & ",
RiskTruncate(0, ))"
D = Range("n1").Value
Case 5
Range("n1").Formula = "=INT(RiskNormal(" & txt1 & "," & txt2 & ", RiskTruncate(0,
)))"
D = Range("n1").Value
Case 6
Range("n1").Formula = "=RiskPoisson(" & txt1 & ", RiskTruncate(0, ))"
D = Range("n1").Value
Case 7
Range("n1").Formula = "=INT(RiskUniform(" & txt1 & "," & txt2 & ", RiskTruncate(0,
)))"
D = Range("n1").Value
Case 8
Range("n1").Formula = "=INT(RiskTriang(" & txt1 & "," & txt2 & "," & txt3 & ",
RiskTruncate(0, )))"
D = Range("n1").Value
Case 9
Range("n1").Formula = "=INT(RiskStudent(" & txt1 & ", RiskTruncate(0, )))"
D = Range("n1").Value
Case 10
Range("n1").Formula = "=INT(RiskWeibull(" & txt1 & "," & txt2 & "))"
D = Range("n1").Value
Case 11
Range("n1").Formula = "=INT(RiskChisq(" & txt1 & ", RiskTruncate(0, )))"
D = Range("n1").Value
End Select
End Sub
Public Sub GeneraTEP()
Select Case ListTEP
Case 1
Range("o1").Formula = "=RiskBinomial(" & Parametros.TextBox4.Value & "," & txt5 &
", RiskTruncate(1, ))"
TEP = Range("o1").Value
Case 2
Range("o1").Formula = "=RiskNegbin(" & txt4 & "," & txt5 & ", RiskTruncate(1, ))"
TEP = Range("o1").Value
Case 3
Range("o1").Formula ="=INT(RiskGamma("
RiskTruncate(1,)))"
TEP = Range("o1").Value
&
txt4
&
","
&
txt5
&
",
Case 4
Range("o1").Formula = "=RiskHypergeo(" & txt4 & "," & txt5 & "," & txt6 &
",RiskTruncate(1, ))"
TEP = Range("o1").Value
Case 5
Range("o1").Formula = "=INT(RiskNormal(" & txt4 & "," & txt5 & ", RiskTruncate(1,
)))"
TEP = Range("o1").Value
Case 6
Range("o1").Formula = "=RiskPoisson(" & txt4 & ", RiskTruncate(1, ))"
TEP = Range("o1").Value
Case 7
Range("o1").Formula = "=Int(RiskUniform(" & txt4 & "," & txt5 & " , RiskTruncate(1,
)))"
TEP = Range("o1").Value
Case 8
Range("o1").Formula = "=INT(RiskTriang(" & txt4 & "," & txt5 & "," & txt6 & ",
RiskTruncate(1, )))"
TEP = Range("o1").Value
Case 9
Range("o1").Formula = "=INT(RiskStudent(" & txt4 & ", RiskTruncate(1, )))"
TEP = Range("o1").Value
Case 10
Range("o1").Formula = "=INT(RiskWeibull(" & txt4 & "," & txt5 & ", RiskTruncate(1,
)))"
TEP = Range("o1").Value
Case 11
Range("o1").Formula = "=INT(RiskChisq(" & txt4 & ", RiskTruncate(1, )))"
TEP = Range("o1").Value
End Select
End Sub
Private Sub Revision()
If INVF <= s And bandera = False Then
GeneraTEP
Eventos(2) = Reloj + TEP
NumPed = NumPed + 1
Bandera5 = True
bandera = True
If Eventos(2) <= Final Then NumRev = NumRev + 1
End If
End Sub
Public Sub Recepcion()
bandera = False
Select Case Retraso
Case True
Aux = (Q - AGO)
If Aux > 0 Then
INVF = Aux + INVF
AGO = 0
Else
AGO = Aux
End If
Case False
INVF = INVF + Q
End Select
End Sub
Public Sub CostoTotal()
COT = Co * NumPed
CCT = Cc * AGOT
CTA = COT + CCT + CAT
End Sub
Sub Optimiza()
Application.ScreenUpdating = False
Start = Timer
Dim ContaTabu As Integer
If BanIte = False Then Ite = 10
ReDim T(2, Ite)
If BanNS = False Then AuxP = 50
If BanQs = False Then
Qw = Sqr(2 * Captura.txtCo.Value * Captura.txtCa.Value * Captura.txtDA.Value /
Captura.txtCa.Value)
sw = Qw / 2
End If
ContadorBarra = 0
SolActual = 0
QActual = Qw
sActual = sw
AuxTQ = QActual
AuxTs = sActual
QMejor = QActual
sMejor = sActual
If Captura.ListBox1.ListIndex <> 0 Or Captura.ListBox2.ListIndex <> 0 Then
Q = Qw
s = sw
Simm = (Ite * AuxP * 8) + 2 * AuxP
For uuu = 1 To AuxP
Simula
SolActual = SolActual + CTA
Next uuu
SolActual = SolActual / AuxP
Else
Simm = (Ite * 8)
Q = Qw
s = sw
Simula
SolActual = CTA
End If
SolMejor = SolActual
Contad = 0
For k = 1 To Ite
For ini = 1 To 8
PCTA(ini) = 0
Next ini
Conta = 0
For u = -1 To 1
Q = Int(QActual + (u) * QActual * inc)
For uu = -1 To 1
If (u = 0 And uu = 0) Then uu = uu + 1
Conta = Conta + 1
Contad = Contad + 1
s = Int(sActual + (uu) * sActual * inc)
''range("d" & Contad) = Q
''range("e" & Contad) = s
VecQs(1, Conta) = Q
VecQs(2, Conta) = s
If
Captura.ListBox1.ListIndex
Captura.ListBox2.ListIndex <> 0 Then
For uuu = 1 To AuxP
Simula
<>
PCTA(Conta) = PCTA(Conta) + CTA
Next uuu
PCTA(Conta) = PCTA(Conta) / AuxP
Else
Simula
PCTA(Conta) = CTA
''range("c" & Contad) = CTA
End If
0
Or
Next uu
Next u
Call BubbleSort(PCTA(), VecQs())
If k <> 1 Then
ChecaTabu
If SolActual < SolMejor Then
SolMejor = SolActual
QMejor = QActual
sMejor = sActual
End If
Else
QActual = VecQs(1, 1)
sActual = VecQs(2, 1)
SolActual = PCTA(1)
If SolActual < SolMejor Then
SolMejor = SolActual
QMejor = QActual
sMejor = sActual
End If
T(1, 1) = AuxTQ
T(2, 1) = AuxTs
End If
Next k
Finish = Timer
TotalTime = Format((Finish - Start) / 60, "0.000")
If Captura.ListBox1.ListIndex <> 0 Or Captura.ListBox2.ListIndex <> 0 Then
Prom = 0
Varianz = 0
Q = QMejor
s = sMejor
Dim Mejorcito() As Double
ReDim Mejorcito(AuxP)
For uoo = 1 To AuxP
Simula
Mejorcito(uoo) = CTA
Prom = CTA + Prom
Next uoo
Prom = Prom / AuxP
For hola = 1 To AuxP
Varianz = Varianz + ((Mejorcito(hola) - Prom) ^ 2)
Next
Varianz = Varianz / (AuxP - 1)
End If
Resultado1.Show 0
Application.StatusBar = False
End Sub
Sub ChecaTabu()
Dim BanderaTabu As Boolean
ReDim Preserve T(2, Ite)
ContaTabu = 0
Do
For Tabu = 1 To (k - 1)
BanderaTabu = False
If T(1, Tabu) = VecQs(1, ContaTabu + 1) And T(2, Tabu) = VecQs(2, ContaTabu
+ 1) Then
BanderaTabu = True
If PCTA(ContaTabu + 1) < SolMejor Then
BanderaTabu = False
Exit For
Else
If ContaTabu <= 7 Then
ContaTabu = ContaTabu + 1
End If
End If
End If
Next Tabu
Loop While BanderaTabu = True
If BanderaTabu <> True Then
'Antes de cambie el valor de Qactual
T(1, k) = QActual
T(2, k) = sActual
QActual = VecQs(1, ContaTabu + 1)
sActual = VecQs(2, ContaTabu + 1)
SolActual = PCTA(ContaTabu + 1)
End If
End Sub
Sub BubbleSort(List() As Double, ListQs() As Double)
Dim First As Integer, Last As Integer
Dim i As Integer, j As Integer
Dim Temp As Double, Temps As Double, TempQ As Double
First = LBound(List)
Last = UBound(List)
For i = First To Last - 1
For j = i + 1 To Last
If List(i) > List(j) Then
Temp = List(j)
List(j) = List(i)
List(i) = Temp
TempQ = ListQs(1, j)
ListQs(1, j) = ListQs(1, i)
ListQs(1, i) = TempQ
Temps = ListQs(2, j)
ListQs(2, j) = ListQs(2, i)
ListQs(2, i) = Temps
End If
Next j
Next i
End Sub
E.1.3 MODELO (S,s)
Las rutinas para el simulador, en este modelo, son las mismas a excepción de una
RevisiónSs, es por ello que rutinas como GeneraD y Demanda no son repetidas.
Optimiza2 es la macro principal del modelo ( S,s), es la macro equivalente a Optimiza
para el modelo (s,Q), sólo que con las variables respectivas.
Private Sub RevisionSs()
If INVF <= s And bandera = False Then
GeneraTEP
Eventos(2) = Reloj + TEP
NumPed = NumPed + 1
Bandera5 = True
bandera = True
Q = SS - INVF
If Eventos(2) <= Final Then
NumRev = NumRev + 1
End If
End If
End Sub
Public Sub Optimiza2()
Application.ScreenUpdating = False
Start = Timer
Dim ContaTabu As Integer
If BanIte = False Then Ite = 10
ReDim T(2, Ite)
If BanNS = False Then AuxP = 50
If BanQs = False Then
SSw = Sqr(2 * Captura.txtCo.Value * Captura.txtCa.Value * Captura.txtDA.Value /
Captura.txtCa.Value)
sw = SSw / 2
End If
ContadorBarra = 0
Simm = (Ite * AuxP * 8) + 2 * AuxP
SolActual = 0
QActual = SSw
sActual = sw
AuxTQ = QActual
AuxTs = sActual
QMejor = QActual
sMejor = sActual
If Captura.ListBox1.ListIndex <> 0 Or Captura.ListBox2.ListIndex <> 0 Then
SS = SSw
s = sw
For uuu = 1 To AuxP
Simula2
SolActual = SolActual + CTA
Next uuu
SolActual = SolActual / AuxP
Else
SS = SSw
s = sw
Simula2
SolActual = CTA
End If
SolMejor = SolActual
For k = 1 To Ite
For ini = 1 To 8
PCTA(ini) = 0
Next ini
Conta = 0
For u = -1 To 1
SS = Int(QActual + (u) * QActual * inc)
For uu = -1 To 1
If (u = 0 And uu = 0) Then uu = uu + 1
Conta = Conta + 1
s = Int(sActual + (uu) * sActual * inc)
VecQs(1, Conta) = SS
VecQs(2, Conta) = s
If
Captura.ListBox1.ListIndex
Captura.ListBox2.ListIndex <> 0 Then
For uuu = 1 To AuxP
Simula2
<>
PCTA(Conta) = PCTA(Conta) + CTA
Next uuu
PCTA(Conta) = PCTA(Conta) / AuxP
Else
Simula2
PCTA(Conta) = CTA
End If
Next uu
Next u
Call BubbleSort(PCTA(), VecQs())
If k <> 1 Then
ChecaTabu
If SolActual < SolMejor Then
SolMejor = SolActual
QMejor = QActual
sMejor = sActual
End If
Else
QActual = VecQs(1, 1)
sActual = VecQs(2, 1)
SolActual = PCTA(1)
If SolActual < SolMejor Then
SolMejor = SolActual
QMejor = QActual
0
Or
sMejor = sActual
End If
T(1, 1) = AuxTQ
T(2, 1) = AuxTs
End If
Next k
Finish = Timer
TotalTime = Format((Finish - Start) / 60, "0.000")
If Captura.ListBox1.ListIndex <> 0 Or Captura.ListBox2.ListIndex <> 0 Then
Prom = 0
Varianz = 0
SS = QMejor
s = sMejor
Dim Mejorcito() As Double
ReDim Mejorcito(AuxP)
For uoo = 1 To AuxP
Simula
Mejorcito(uoo) = CTA
Prom = CTA + Prom
Next uoo
Prom = Prom / AuxP
For hola = 1 To AuxP
Varianz = Varianz + ((Mejorcito(hola) - Prom) ^ 2)
Next
Varianz = Varianz / (AuxP - 1)
End If
Resultado1.Show 0
Application.StatusBar = False
End Sub
E.1.4 OPCIÓN CONTINUAR
Una vez que el proceso completo ha finalizado después de k iteraciones, si el usuario
decide que esas k iteraciones no fueron suficientes y necesita hacer más continuando
desde ese último resultado, solo necesita apretar el botón continuar en el Formulario
Resultado1. A continuación se presenta las macros que permiten que esto suceda, primero
se presenta para el modelo(s,Q) y luego para el modelo(S,s).
Sub Continua()
For k = Ite - Sigue.txtContinua.Value + 1 To Ite
For g = 1 To 8
PCTA(g) = 0
Next
Conta = 0
For u = -1 To 1
Q = Int(QActual + (u) * QActual * inc)
For uu = -1 To 1
If (u = 0 And uu = 0) Then uu = uu + 1
Conta = Conta + 1
s = Int(sActual + (uu) * sActual * inc)
VecQs(1, Conta) = Q
VecQs(2, Conta) = s
If
Captura.ListBox1.ListIndex
<>
Captura.ListBox2.ListIndex <> 0 Then
For uuu = 1 To AuxP
Simula
PCTA(Conta) = PCTA(Conta) + CTA
Next uuu
PCTA(Conta) = PCTA(Conta) / AuxP
Else
Simula
PCTA(Conta) = CTA
End If
Next uu
Next u
0
Or
Call BubbleSort(PCTA(), VecQs())
ChecaTabu
If SolActual < SolMejor Then
SolMejor = SolActual
QMejor = QActual
sMejor = sActual
End If
Next k
If Captura.ListBox1.ListIndex <> 0 Or Captura.ListBox2.ListIndex <> 0 Then
Prom = 0
Varianz = 0
Q = QMejor
s = sMejor
Dim Mejorcito() As Double
ReDim Mejorcito(AuxP)
For uoo = 1 To AuxP
Simula
Mejorcito(uoo) = CTA
Prom = CTA + Prom
Next uoo
Prom = Prom / AuxP
For hola = 1 To AuxP
Varianz = Varianz + ((Mejorcito(hola) - Prom) ^ 2)
Next
Varianz = Varianz / (AuxP - 1)
End If
Resultado1.Show 0
End Sub
Sub Continua2()
For k = Ite - Sigue.txtContinua.Value + 1 To Ite
For g = 1 To 8
PCTA(g) = 0
Next
Conta = 0
For u = -1 To 1
SS = Int(QActual + (u) * QActual * inc)
For uu = -1 To 1
If (u = 0 And uu = 0) Then uu = uu + 1
Conta = Conta + 1
s = Int(sActual + (uu) * sActual * inc)
VecQs(1, Conta) = SS
VecQs(2, Conta) = s
If
Captura.ListBox1.ListIndex
<>
Captura.ListBox2.ListIndex <> 0 Then
For uuu = 1 To AuxP
Simula2
PCTA(Conta) = PCTA(Conta) + CTA
Next uuu
PCTA(Conta) = PCTA(Conta) / AuxP
Else
Simula2
PCTA(Conta) = CTA
End If
Next uu
Next u
Call BubbleSort(PCTA(), VecQs())
ChecaTabu 'Checando si es Tabú o no
If SolActual < SolMejor Then
SolMejor = SolActual
QMejor = QActual
sMejor = sActual
End If
Next k
If Captura.ListBox1.ListIndex <> 0 Or Captura.ListBox2.ListIndex <> 0 Then
Prom = 0
Varianz = 0
SS = QMejor
s = sMejor
Dim Mejorcito() As Double
ReDim Mejorcito(AuxP)
0
Or
For uoo = 1 To AuxP
Simula
Mejorcito(uoo) = CTA
Prom = CTA + Prom
Next uoo
Prom = Prom / AuxP
For hola = 1 To AuxP
Varianz = Varianz + ((Mejorcito(hola) - Prom) ^ 2)
Next
Varianz = Varianz / (AuxP - 1)
End If
Resultado1.Show 0
End Sub