REE Models - Publications - Faculty & Research

2025
Working Paper

Trade and Industrial Policy in Supply Chains: Directed Technological Change in Rare Earths

By: Laura Alfaro, Harald Fadinger, Jay Schymik and Gede Virananda

Trade and industrial policies, while primarily intended to support domestic industries, may unintentionally stimulate technological progress abroad. We document this mechanism in the case of rare earth elements (REEs)—critical inputs for manufacturing at the knowledge... View Details

Keywords: Industrial Policy; Global Value Chains; Directed Technological Change; Input-output Linkages; Innovation; Trade; Metals and Minerals; Technological Innovation; Supply Chain; Technology Industry

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2012
Working Paper

The Need for (long) Chains in Kidney Exchange

By: Itai Ashlagi, David Gamarnik, Michael A. Rees and Alvin E. Roth

It has been previously shown that for sufficiently large pools of patient-donor pairs, (almost) efficient kidney exchange can be achieved by using at most 3-way cycles, i.e., by using cycles among no more than 3 patient-donor pairs. However, as kidney exchange has... View Details

Keywords: Networks; Complexity; Performance Efficiency; Medical Specialties; Health Care and Treatment; Philanthropy and Charitable Giving

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May 2011
Article

Nonsimultaneous Chains and Dominos in Kidney Paired Donation—Revisited

By: Itai Ashlagi, Duncan S. Gilchrist, Alvin E. Roth and Michael A. Rees

Since 2008 kidney exchange in America has grown in part from the incorporation of non-directed donors in transplant chains rather than simple exchanges. It is controversial whether these chains should be performed simultaneously ("domino paired donation," DPD) or... View Details