Degree Granting Department
Industrial and Management Systems Engineering
Alex Savachkin, Ph.D.
Tapas K. Das, Ph.D.
Jose Zayas-Castro, Ph.D.
Alex Volinsky, Ph.D.
Yuncheng You, Ph.D.
enterprise networks, lean, capacity disruptions, countermeasure policies, pandemic influenza
This work is a compilation of four manuscripts, three of which are published and one is
in the second round of review, all in refereed journals. All four manuscripts focus on analysis
of stochastic disruptions to support design of capacitated engineered networks. The work
is motivated by limited ability to mitigate elevated risk exposure of large-scale capacitated
enterprise networks functioning in lean environments. Such inability to sustain enterprise
capacity in the face of disruptions of various origins has been causing multi-billion enterprise
forfeitures and hefty insurance premiums. At the same time, decision support methodologies
for reliable design of dynamic capacitated networks have been largely unavailable.
This work is organized as follows.
presents a methodology to analyze ca-
pacitated healthcare supply chains using a framework of forward ow-matching networks
with multiple points of delivery. Special emphasis is given to developing stochastic models
for capturing capacity trajectories at the points of delivery.
focuses on assuring
capacity availability for a critical vertex exposed to random stepwise capacity disruptions
with exponentially distributed interarrival times and uniformly distributed magnitudes. We
explore two countermeasure policies for a risk-neutral decision maker who seeks to maxi-
mize the long-run average reward. We present an extensive numerical analysis as well as
a sensitivity study on the uctuations of some system parameter values.
the capacity assurance analysis for critical vertices by considering stepwise partial system
capacity loss accumulating over time. We examine implementation of a countermeasure
policy, aimed at reducing the disruption rate, for a risk-neutral decision maker who seeks to
maximize long-run average return. We explore how the policy of maintaining the optimal
disruption rate is a
ected by a number of system parameters. Finally,
dynamic predictive methodology for mitigation of cross-regional pandemic outbreaks which
can be used to estimate workforce capacity loss for critical vertices due to such societal
Scholar Commons Citation
Uribe-Sánchez, Andrés Fernando, "Analysis of Stochastic Disruptions to Support Design of Capacitated Engineered Networks" (2010). USF Tampa Graduate Theses and Dissertations.