Agenda scientifique

Déc
5
mar
2023
Josepa Miquel-Florensa (Toulouse Capitole University)-Price-Cost Margins and Quality: Evidence from Colombian Coffee Export
Déc 5 @ 10 h 30 – 11 h 45

Drawing on internal records from a Colombian coffee processor and exporter, we explore the relationship between price-cost margins and product quality. We find that higher-quality coffee is sold at a higher price-cost margin. We develop a model of intermediaries that exercise both output-market and input-market power and use it to estimate the relative contributions of markups and markdowns to the observed price-cost margins, for different quality categories.

Partagez cette actualité !
Déc
11
lun
2023
Karine van der Straeten (TSE) – TBA
Déc 11 @ 11 h 00 – 12 h 00
Partagez cette actualité !
Déc
12
mar
2023
Dionissi Aliprantis (Federal Reserve Bank of Cleveland) – What Determines the Success of Housing Mobility Programs?
Déc 12 @ 10 h 30 – 11 h 45

Housing Mobility Programs (HMPs) support residential mobility to reduce economic segregation. One design feature of HMPs requires identifying areas to which moving will most improve outcomes. We show that ranking neighborhoods’ effects using current residents’ outcomes has strengths over using previous residents’ outcomes due to statistical uncertainty, bias from sorting over time, and lack of support. We simulate how the choice of neighborhood ranking and others affect an originally-intended outcome of HMPs: reducing racial segregation. HMP success on this dimension depends on the ability to port vouchers across jurisdictions, access to cars, and the range of neighborhoods targeted.

Partagez cette actualité !
Déc
19
mar
2023
Morgan Patty (Université Paris-Saclay) – Root Dominance
Déc 19 @ 10 h 30 – 11 h 45

Root dominance is an intermediate dominance relation between weak and strict dominances. In addition to weak dominance, root dominance requires strict dominance on all profiles where an opponent plays a best response to the dominating strategy. The iterated elimination of root dominated strategies (IERDS) outcome refines the iterated elimination of strictly dominated strategies (IESDS) outcome, and IERDS is an order independent procedure in finite games, contrary to the iterated elimination of weakly dominated strategies (IEWDS). In addition, IERDS does not face the inconsistency that we call mutability. That is, IERDS does not alter the dominance relation between two strategies like IEWDS does. Finally, we introduce a rationality concept which corresponds to root undominated strategies. This rationality concept is induced by perturbations of the game such that a player believes that the strategies he considers might be observable by his opponent. We discuss the links between our concept and other concepts established in various literatures such as the conjectural variations theory.

Partagez cette actualité !
Jan
15
lun
2024
Seda Ertac (Koc University) – TBA
Jan 15 @ 11 h 00 – 12 h 15
Partagez cette actualité !
Jan
16
mar
2024
Riccardo Turati (Universitat Autonoma de Barcelona)
Jan 16 @ 10 h 30 – 11 h 45
Partagez cette actualité !
Jan
29
lun
2024
Luc Désiré Omgba (U de Lorraine) – TBA
Jan 29 @ 11 h 00 – 12 h 15
Partagez cette actualité !
Jan
30
mar
2024
Capucine Chapel (INRAE) – Which size for urban green parks? French evidence of the rental market
Jan 30 @ 10 h 30 – 11 h 45

Faced with increasing urbanisation and climate crisis, the development of green spaces in cities has become a major issue for urban planners. While the need for proximity between housing and green spaces has been widely established in the literature, the question of the size to allocate to the latter is important in a context of strong pressure on land use. We explore this question by taking advantage of databases of the local rent observatories for rental prices and OpenStreetMap for parks. Using a generalised propensity score weighting method, we analyse the preferences between different typologies of park sizes in the private rental market of the largest French urban areas in 2017 and 2018. We show that on average, individuals value large parks more, followed by small and lastly by mediumsized parks. We also detect variations in this hierarchy of preference depending on flat size and its location. These results are of interest not only to property investors looking to increase their rental income, but also to political decisionmakers looking to improve existing parks and propose new urban park development projects.

Partagez cette actualité !
Fév
6
mar
2024
Elena del Mercato (Université Paris 1 Panthéon-Sorbonne)
Fév 6 @ 10 h 30 – 11 h 45
Partagez cette actualité !
Fév
13
mar
2024
Tanguy van Ypersele (AMSE)
Fév 13 @ 10 h 30 – 11 h 45
Partagez cette actualité !