library(deSolve)
# usb network example
uvbParameter = c( ks1=0.23,
ks2=4.0526,
kdr1=0.1,
kdr2=0.2118,
k1=0.0043,
k2=161.62,
ka1=0.0372,
ka2=0.0611,
ka3=4.7207,
kd1=94.3524,
kd2=50.6973,
kd3=0.5508,
ks3=0.4397,
kdr3=1.246,
uv=1,
ka4=10.1285,
kd4=1.1999,
n1=3,
n2=2,
n3=3.5,
kdr3a=0.9735,
kdr3b=0.406,
ksr=0.7537,
fhy3_s=5)
x0 = c(0.2,10,2,0,0,20,0,0,0,4.2,0.25,20,0)
uvbModel <- function(t,x,parameters) {
with (as.list(parameters),{
dx1 = ((-2) * ((ka1 * (x[1]^2) * (x[4]^2)) - (kd1 * x[5])) +
(-2) * ((ka2 * (x[1]^2) * x[2]) - (kd2 * x[3])) +
((ks1 *((1) + (uv * n3 * (x[11] + fhy3_s)))) -
(kdr1 * ((1) + (n1 * uv)) * x[1])))
dx2 = ((-1) * ((ka2*(x[1]^2) * x[2]) - (kd2 * x[3])) +
(-1) * ((ka4 * x[2] * x[12]) - (kd4 * x[13])))
dx3 = (((ka2 * (x[1]^2) * x[2]) - (kd2* x[3])))
dx4 = ((-2) * (k1*(x[4]^2)) + (2) * (k2 * x[6]) +
(-2) * ((ka1 * (x[1]^2)* (x[4]^2)) - (kd1 * x[5])) +
(-1)* (ka3 * x[4] *x[7]))
dx5 = (((ka1 * (x[1]^2) * (x[4]^2)) -(kd1 * x[5])))
dx6 = ((-1) * (k2 * x[6]) + (k1 * (x[4]^2)) +(kd3 * (x[8]^2)))
dx7 = ((-1) * (ka3 * x[4] * x[7]) + ((ks2 * ((1) + (uv * x[5]))) -
(kdr2 * x[7])) + (2) * (kd3 * (x[8]^2)))
dx8 = ((-2) * (kd3 * x[8]^2) + (ka3 * x[4] * x[7]))
dx9 = 0
dx10 = 0
dx11 = (((ks3 * ((1) + (n2 * uv))) -(kdr3 * (((x[3] / (kdr3a + x[3])) +
(x[13] / (kdr3b + x[13]))) -(x[5] / (ksr + x[5]))) * x[11])))
dx12 = ((-1) * (ka4 * x[2] * x[12]) + (kd4 * x[13]))
dx13 =((ka4 * x[2] * x[12]) - (kd4 * x[13]))
list(c(dx1,dx2,dx3,dx4,dx5,dx6,dx7,dx8,dx9,dx10,dx11,dx12,dx13))
})
}
uvbMeasure <- function(x) {
y1 = 2*x[,5] + x[,4] + x[,8]
y2 = 2*x[,5] + 2* x[,3] + x[,1]
y3 = x[,6]
y4 = x[,11]
y5 = x[,4]
return(cbind(y1,y2,y3,y4,y5))
}
y <- uvbData[,1:6]
t <- uvbData$t
sd <- uvbData[,7:11]
sd <- cbind(t,sd)
uvbModel <- odeModel(func = uvbModel, parms = uvbParameter, times = t,
measFunc = uvbMeasure, y = x0, meas = y, sd = sd)
res <- DEN(odeModel = uvbModel, alphaStep = 500, alpha2 = 0.0001, epsilon = 0.2, plotEstimates = TRUE)
plot(res[[2]])
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