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INFORMS Analytics Collections: Analytics in a World of Disruptions
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BUFFERING

Prepositioning and Local Purchasing for Emergency Operations Under Budget, Demand, and Supply Uncertainty

Published Online:

M&SOM

    Abstract
    Problem definition: Considering a mix of prepositioning and local purchasing, common to cover humanitarian demands in the aftermath of a rapid-onset disaster, we propose policies to determine preposition stock. These formulations are developed in the ...
Mitigating Interdiction Risk with Fortification

Published Online:

Operations Research

    Abstract
    Critical infrastructure is inevitably subject to the risk of interdictions, which may potentially cripple its ability to channel resources to fulfill demands at various destinations. Mitigating such risks are therefore important questions faced by the ...
Disruption Risk and Optimal Sourcing in Multitier Supply Networks

Published Online:

Management Science

    Abstract
    We study sourcing in a supply chain with three levels: a manufacturer, tier 1 suppliers, and tier 2 suppliers prone to disruption from, e.g., natural disasters such as earthquakes or floods. The manufacturer may not directly dictate which tier 2 suppliers ...
Supply Disruptions and Optimal Network Structures

Published Online:

Management Science

    Abstract
    This paper studies multitier supply chain networks in the presence of disruption risk. Firms decide how much to source from their upstream suppliers so as to maximize their expected profits, and prices of intermediate goods are set so that markets clear. ...
On the Design of Sparse but Efficient Structures in Operations

Published Online:

Management Science

    Abstract
    It is widely believed that a little flexibility added at the right place can reap significant benefits for operations. Unfortunately, despite the extensive literature on this topic, we are not aware of any general methodology that can be used to guide ...
Reliable Facility Location Design Under Uncertain Correlated Disruptions

Published Online:

M&SOM

    Abstract
    Most previous studies on reliable facility location design assume that disruptions at different locations are independent. In this paper, we present a model that allows disruptions to be correlated with an uncertain joint distribution, and we apply ...
Dual Sourcing and Smoothing Under Nonstationary Demand Time Series: Reshoring with SpeedFactories

Published Online:

Management Science

    Abstract
    We investigate near-shoring a small part of the global production to local SpeedFactories that serve only the variable demand. The short lead time of the responsive SpeedFactory reduces the risk of making large volumes in advance, yet it does not involve ...
Dynamic Multisourcing with Dependent Supplies

Published Online:

Management Science

    Abstract
    As multisourcing becomes a widely adopted strategy in dynamic procurement planning, firms inevitably source from suppliers with dependent material flows, and such supply dependence, created by common second-tier suppliers or a common economic environment, ...
Guilt by Association: Strategic Failure Prevention and Recovery Capacity Investments

Published Online:

Management Science

    Abstract
    We examine technological systems that display the following characteristics: (i) unplanned outages incur significant costs, (ii) the system experiences an outage if one or more of its subsystems fails, (iii) subsystem failures may occur simultaneously, ...
Compensating for Dynamic Supply Disruptions: Backup Flexibility Design

Published Online:

Operations Research

    Abstract
    To increase resilience in supply chains, we investigate the optimal design of flexibility in a backup system. We model the dynamics of disruptions as Markov chains, and consider a multiproduct, multisupplier supply chain under dynamic disruption risks. ...

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