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Alan Erera

@alerera.bsky.social

442 followers 230 following 18 posts

Professor of transportation logistics and supply chain engineering, Georgia Tech. Improving design and control decisions. User and developer of operations research, ML, and AI tools. Site: www2.isye.gatech.edu/~alerera

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Alan Erera @alerera.bsky.social · 10/04/2025

Did you know that the headquarters for one of the big 4 US railroads is just a short walk from Georgia Tech? Norfolk Southern hosted our MS in Supply Chain Engineering students for a tour of their Network Operations Center and gave us an overview of modern freight railroads! #logistics

Georgia Tech MS in Supply Chain Engineering students stand in front of the Atlanta headquarters for the Norfolk Southern railroad.

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Alan Erera @alerera.bsky.social · 08/04/2025

In logistics, perhaps the most important idea is that inflows must balance outflows. If $ consistently flow out of a nation without growing inflation, ask yourself: where did those $ come from?

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Alan Erera @alerera.bsky.social · 12/02/2025

A frustration about grant "overhead": shocking rates!! Grant funding F = D + I, where D are directs. I is computed (rate)*D_elg, and eligible directs D_elg < D. So, a rate of 50% seems very high (half of grant!) Nope. Ex: D=100, D_elg=80, so I=40 and F=140. So indirect is (40/100)=28.5% of grant.

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Alan Erera @alerera.bsky.social · 11/02/2025

Tariffs seek to raise prices on produced metals so US producers are competitive. Demand for steel-intensive items should go down, and some products (like cars/trucks) may be redesigned to use less. An overall economic drag and fewer large vehicle sales will reduce carbon emissions, yay! #logistics

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Alan Erera @alerera.bsky.social · 02/02/2025

Trade tariffs create supply chain costs, and new costs distort SCs and markets. Tariff-engineered distortions may have political goals, including raising revenue. But why is "reducing a trade deficit" a goal, when a deficit means net foreign investment which seems preferable to the alternative!

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Alan Erera @alerera.bsky.social · 23/01/2025

Tariffs are a supply chain cost. Impacts seem difficult to predict, but experiments is coming with outcomes that could be compared to models. Are we ready? #logistics

linkedin.com

Alan Erera on LinkedIn: Tariffs and Trade

There is continued discussion in Congress of new trade tariffs on US goods imports in the range of 10-25%, possibly independent of country-of-origin but in any…

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Alan Erera @alerera.bsky.social · 16/01/2025

Consider following @informs.bsky.social ! #orms

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Reposted by Alan Erera

David Roberts @volts.wtf · 04/12/2024

In terms of mobility, e-bikes are selling faster & having bigger effects on emissions than EVs, much less self-driving EVs. And yet they get vastly, vastly less attention. www.fastcompany.com/90994141/why...