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DTSTART;TZID=Europe/Paris:20260311T120000
DTEND;TZID=Europe/Paris:20260311T130000
DTSTAMP:20260304T103644Z
CREATED:20260210T125013Z
LAST-MODIFIED:20260304T103644Z
UID:25771-1773230400-1773234000@www.bse.u-bordeaux.fr
SUMMARY:Séminaire doctorants: Papa Boure Ndiaye
DESCRIPTION:Séminaire doctorantsBordeaux School of Economics\n  \n\nPapa Boure Ndiaye\n(BxSE) \n  \nCan Agroforestry Reduce Pesticide Use and Avoid Yield Losses in Viticulture?\n  \nViticulture is highly dependent on chemical pesticides to control pests and fungal diseases\, generating environmental externalities and regulatory pressure to reduce input use. This paper examines whether agroforestry can serve as a nature-based substitute by mitigating pest and downy mildew induced yield losses and reducing pesticide reliance. Using plot-level panel data from 51 vineyards in western France (2018–2023)\, we estimate a nonlinear mixed-effects model combining a production function with a damage function to separately identify input productivity\, damage pressure\, and the contribution of surrounding trees and hedges (mapped using GIS). Results show that agroforestry significantly reduces pest-induced yield losses and generates positive economic benefits. In contrast\, the estimated effect on downy mildew is positive in the damage function—suggesting a potential amplification of downy mildew-related losses—but remains statistically insignificant\, indicating substantial uncertainty regarding its role in fungal disease regulation. \n  \n  \n  \nAgenda > Tous les événements\n\n \n\n 
URL:https://www.bse.u-bordeaux.fr/agenda/seminaire-doctorants-papa-boure-ndiaye/
LOCATION:BxSE\, salle de séminaire H2-116\, bât.H\, campus Pessac\, avenue Leon Duguit\, Pessac\, 33600
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DTSTART;TZID=Europe/Paris:20260311T140000
DTEND;TZID=Europe/Paris:20260311T150000
DTSTAMP:20260303T085556Z
CREATED:20260127T145131Z
LAST-MODIFIED:20260303T085556Z
UID:25670-1773237600-1773241200@www.bse.u-bordeaux.fr
SUMMARY:Séminaire: Anthony Lepinteur (U. of Luxembourg)
DESCRIPTION:Séminaire d’économie de Bordeaux\n  \nAnthony Lepinteur\nUniversity of Luxembourg  \n  \nMeasuring the Unmeasurable? Systematic Evidence on Scale Transformations in Subjective Survey Data\n  \nEconomists routinely use survey measures of\, for example\, risk preferences\, trust\, political attitudes\, or wellbeing. The literature generally treats numerical response categories as if they represent equal psychological intervals. We provide the first systematic test of this assumption\, developing a general framework to quantify how easily results can be overturned when this linearity assumption is relaxed. Using original experimental data\, we show that respondents interpret survey scales in ways that do deviate from linearity\, but only mildly. Focusing on wellbeing research\, we then replicate 30\,000+ coefficient estimates across more than 80 papers published in top economics journals. Replicated coefficient signs are remarkably robust to mild departures from linear scale-use. However\, statistical inference and estimates of relative effect magnitudes become unreliable\, even under modest departures from linearity. This is especially problematic for policy applications. We show that these concerns generalise to many other widely used survey-based constructs. \n \n \n \n \n– Séminaire organisé par le programme 2 / BSE –\n \n  \n>> pour assister au séminaire via Zoom\, contacter julie.vissaguet@u-bordeaux.fr \n\n \nAgenda > Tous les événements\n\n \n  \n  \n 
URL:https://www.bse.u-bordeaux.fr/agenda/seminaire-anthony-lepinteur-u-of-luxembourg/
LOCATION:BxSE\, salle de séminaire H2-116\, bât.H\, campus Pessac\, avenue Leon Duguit\, Pessac\, 33600
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