Sets F = set of fixed health centers f O...

Sets
$F = set of fixed health centers f$
$O = set of potential outreach centers o$
$J = set of population regions$ j
Variables
$X_{f j} = people from region j vaccinated by fixed health center f$ [Continuous]
$X_{o j} = people from region j vaccinated by outreach site o$ [Continuous]
$X_{f o} = resource bundles from fixed health center f to outreach site o$ [Integer]
$Y_{f j} = {\begin{matrix} 1 & if region j served by fixed health center f \\ 0 & if otherwise \end{matrix}$ [Binary]
$Y_{o j} = {\begin{matrix} 1 & if region j serviced by outreach site o \\ 0 & if otherwise \end{matrix}$ [Binary]
$X_{f j}, X_{o j}, X_{f o} \geq 0$	$\forall f ϵ F, \forall o ϵ O, \forall j ϵ J$
Parameters
Fixed health centers
$C E_{f} = employee cost at fixed health center f$ ($/day)
$P E_{f} = employee productivity at fixed health center f$ (doses/day)
Resource bundle (outreach)
$C E_{o} = employee cost at outreach o$ ($/day)
$P E_{o} = employee productivity at outreach o$ (doses/day)
$V p = doses per resource bundle$
$V e = \max employees per vehicle$
$V c v = \max cold boxes per vehicle$
$V d c = average vaccine doses per cold box$
$D i s t_{f o} = distance between fixed health center f and outreach o$ (km)
$C_{f o} = total resource bundle cost$ ($)
Demand
$\propto_{f j} = vaccination coverage of region j by fixed health center f$
$\propto_{o j} = vaccination coverage of region j by outreach center o$
$D_{j} = total demand for immunization in region j$
$d_{f j} = doses demanded by region j filled by fixed health center f$
$d_{o j} = doses demanded by region j filled by outreach center o$
Costs
$B = total available budget$ ($)
$C v = cost per vaccine dose$ ($/dose)
$C o v = vehicle operation cost per km$ ($/km)

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Sets
$F = set of fixed health centers f$
$O = set of potential outreach centers o$
$J = set of population regions$ j
Variables
$X_{f j} = people from region j vaccinated by fixed health center f$ [Continuous]
$X_{o j} = people from region j vaccinated by outreach site o$ [Continuous]
$X_{f o} = resource bundles from fixed health center f to outreach site o$ [Integer]
$Y_{f j} = {\begin{matrix} 1 & if region j served by fixed health center f \\ 0 & if otherwise \end{matrix}$ [Binary]
$Y_{o j} = {\begin{matrix} 1 & if region j serviced by outreach site o \\ 0 & if otherwise \end{matrix}$ [Binary]
$X_{f j}, X_{o j}, X_{f o} \geq 0$	$\forall f ϵ F, \forall o ϵ O, \forall j ϵ J$
Parameters
Fixed health centers
$C E_{f} = employee cost at fixed health center f$ ($/day)
$P E_{f} = employee productivity at fixed health center f$ (doses/day)
Resource bundle (outreach)
$C E_{o} = employee cost at outreach o$ ($/day)
$P E_{o} = employee productivity at outreach o$ (doses/day)
$V p = doses per resource bundle$
$V e = \max employees per vehicle$
$V c v = \max cold boxes per vehicle$
$V d c = average vaccine doses per cold box$
$D i s t_{f o} = distance between fixed health center f and outreach o$ (km)
$C_{f o} = total resource bundle cost$ ($)
Demand
$\propto_{f j} = vaccination coverage of region j by fixed health center f$
$\propto_{o j} = vaccination coverage of region j by outreach center o$
$D_{j} = total demand for immunization in region j$
$d_{f j} = doses demanded by region j filled by fixed health center f$
$d_{o j} = doses demanded by region j filled by outreach center o$
Costs
$B = total available budget$ ($)
$C v = cost per vaccine dose$ ($/dose)
$C o v = vehicle operation cost per km$ ($/km)

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