Supply Chain Interdiction and Recovery Planning Under Uncertainty

大多数公共服务和供应链业务的设计是基于互联网络不间断运作的前提，其结构中的冗余度最小。沿着全球化趋势和精益管理原则，以效率为目标的持续繁荣增加了由于自然灾害和故意人为行为而造成的破坏的脆弱性。二零一一年日本地震、卡特里娜飓风、恐怖袭击及政府因新型冠状病毒疫情而关闭经济活动，暴露了这些旨在维持轻微干扰的相互关联的社会及经济网络的缺陷。供应链风险管理文献主要集中在随机的日常运营故障的风险，以优化预期的行为。另一方面，最近发生的蓄意和重大自然灾害使人们有必要更仔细地研究这种网络的设计和运作的最坏情况。该研究计划的目标是开发决策工具，优化网络的响应能力和鲁棒性。在实现这一目标时，重点将放在最初的设计决策以及与拦截后恢复有关的决策上，以维持所述网络的运作。拟议的研究计划将探讨使用一类重要的问题，称为网络阻断和设防规划问题。网络阻断是指攻击者为对对手的行动造成最大损害而做出的一组决策，而防御是指防御者为最小化攻击者决策造成的最大损害而做出的一组决策。 拟议项目将开发一系列综合数学模型和新的解决方法，以探索网络阻断和保护规划对网络初始设计和阻断后恢复的影响。应用将针对物流和供应链网络，关键医疗服务网络。该研究项目开发的工具和见解将有助于商业供应链、医疗网络设计和运营以及传染病控制的决策。

The majority of public services and supply chain operations are designed based on the premise of undisrupted functioning of interconnected networks with minimal redundancy in their structure. The constant thrive for aiming efficiency along with the globalization trends and lean management principles increased the vulnerability to disruptions due to natural disasters and intentional man made actions. 2011 Japan earthquake, hurricane Katrina, terrorist attacks and government shutdown of economic activities due to COVID 19 pandemic exposed the deficiencies of these interconnected social and economic networks designed to sustain minor disruptions. Supply chain risk management literature mainly focuses on risks from random daily operational failures with the objective of optimizing the expected behaviour. On the other hand, recent deliberate and major natural disasters created the need to look worst case conditions more carefully at the design and operation of such networks. The objective of this research program is to develop decision making tools that will optimize the responsiveness and the robustness of networks. In achieving this objective the focus will be on the initial design decisions as well as post interdiction recovery related decisions to maintain functioning of said networks. The proposed research program will explore the use of an important class of problems known as network interdiction and fortification planning problems. Network interdiction refers to the set of decisions made by an attacker to create maximum damage to an adversary's operations whereas the fortification refers to the set of decisions made by the defender to minimize the maximum damage caused by the attacker's decisions. The proposed project will develop a range of integrated mathematical models and novel solution methodologies to explore the impact of network interdiction and protection planning on the initial design and robust post-interdiction recovery of networks. Applications will be aiming logistics and supply chain networks, critical healthcare services networks. The developed tools and insights from this research program will contribute to decision making in commercial supply chains, healthcare network design and operations as well as infectious disease control.