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UID:event-12410@www.amse-aixmarseille.fr
DTSTAMP:20260422T111939Z
CREATED:20260422T111939Z
LAST-MODIFIED:20260422T111939Z
STATUS:CONFIRMED
SEQUENCE:0
SUMMARY:phd seminar - Ernesto Ugolini*\, Ivan Conjeaud**
DTSTART:20250923T090000Z
DTEND:20250923T103000Z
DESCRIPTION:*We develop an empirical strategy to estimate the general-equil
 ibrium effects of trade shocks on local labor markets\, enabling direct com
 parison with partial-equilibrium estimates. Using a quantitative trade mode
 l\, we show that employment responses are fully captured by a market-access
  measure that incorporates input–output linkages and domestic trade costs
 . Applying this framework to the China Shock\, we quantify changes in marke
 t access across 722 U.S. commuting zones and 22 sectors\, regress them on e
 xposure to Chinese imports\, and trace how the shock propagates through tra
 de and production linkages to generate predicted general-equilibrium effect
 s for each labor market. Accounting for these spillovers reduces the estima
 ted negative effect on manufacturing employment by a factor of 2.5. While u
 pstream contractions amplify the shock through input–output linkages\, re
 ductions in domestic competition redirect demand toward less-affected regio
 ns\, where producers expand. These findings underscore the importance of ge
 neral-equilibrium and spatial adjustments when assessing the labor-market c
 onsequences of globalization.**In this paper\, I study a model of an online
  platform with a catalog of items whose quality are unknown. Short-lived us
 ers arrive in sequence and browse the catalog\, paying a small cost each ti
 me they want to examine a new alternative. The platform observes their beha
 vior and uses it to deduce information about the items’ quality so as to 
 enhance future user’s experience. I show that the platform is able to dis
 tinguish high-quality items if and only if a condition linking the cost of 
 browsing and the thickness of the tail of the distribution from which the q
 uality of the items is drawn holds true. This condition relates to the abil
 ity of the platform to incentivize users to explore new items using the inf
 ormation gathered with the previous users. I pin down an easily implementab
 le policy that guarantees efficient learning.\\n\\nContact: Alexandre Arnou
 t : alexandre.arnout[at]univ-amu.frPhilippine Escudié : philippine.escudi
 e[at]univ-amu.frArmand Rigotti : armand.rigotti[at]univ-amu.fr\n\nPlus d'i
 nformations: https://www.amse-aixmarseille.fr/fr/evenements/ernesto-ugolini
 -ivan-conjeaud
LOCATION:Îlot Bernard du Bois - Salle 21\, AMU - AMSE\, 5-9 boulevard Maur
 ice Bourdet\, 13001 Marseille
URL;VALUE=URI:https://www.amse-aixmarseille.fr/fr/evenements/ernesto-ugolini-ivan-conjeaud
CONTACT:Alexandre Arnout : alexandre.arnout[at]univ-amu.frPhilippine Escudi
 é :&nbsp\;philippine.escudie[at]univ-amu.frArmand Rigotti :&nbsp\;armand.r
 igotti[at]univ-amu.fr
TRANSP:OPAQUE
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