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University of Nebraska–Lincoln

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A Framework for Analyzing the U.S. Coin Supply Chain

Journal(s): Production and Operations Management
Published: January 27, 2020
Author(s): Yiwei Huang, Yunxia Zhu, Subodha Kumar, Bala Shetty, Chelliah Sriskandarajah

General Description
Everyone knows the frustration of not having the right change to complete a purchase. Dr. Yunxia (Peter) Zhu, assistant professor of supply chain management and analytics, believes his research exploring the supply chain of currency may contain solutions to a situation made worse by the COVID-19 pandemic.

“At the beginning of the pandemic, consumers were faced with shortages in toilet paper and other products,” said Zhu, who came to the University of Nebraska–Lincoln in 2018. “For these products, the flow in the supply chain is one direction – manufacturers produce products and then retailers sell those products to customers.”
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Academic Abstract
We study a coin supply chain problem in the context of improving efficiency. While most consumer products are distributed in one direction, coins are recirculated and reused through the economy. The Federal Reserve System (FRS), the central banking system of the United States, plays a crucial role in managing the U.S. coin supply chain (CSC). It spends a significant fraction of its annual budget on operating the U.S. CSC in order to provide banking services to depository institutions (DIs) and the public. The objective of this study is to provide a near-optimal or an optimal operating policy that minimizes the total cost of producing, supplying, and managing coin inventory in the U.S. CSC. The study demonstrates a modeling approach that not only can be applied for effectively and efficiently managing the coin supply in the United States, but also for managing similar coin supply chains around the world. The extensive tools and insights developed in this study may prove to be beneficial to the Federal Reserve’s Cash Product Office (CPO) that manages the distribution of the nation’s coin inventory. Managing demand uncertainty and streamlining its processes to be more adaptable to changes in demand are critical for the CPO to reduce supply chain costs. The robust optimization framework and the resulting insights presented in this study could potentially help the CPO to manage shifts in coin demand and achieve its cost reduction goals.

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