Recherche avancée

Edmond Awad, Bence Bago, Jean-François Bonnefon, Nicholas Christakis, Iyad Rahwan et Azim Shariff

vol. 7, n° 2, 2022, p. 1–9

Objective. When medical resources are scarce, clinicians must make difficult triage decisions. When these decisions affect public trust and morale, as was the case during the COVID-19 pandemic, experts will benefit from knowing which triage metrics have citizen support. Design. We conducted an...

Ulrich Hege et Yifei Zhang

n° 22-1397, décembre 2022

We show that the majority of hedge fund activism campaigns occur in clusters by industry and time. Activism waves are explained by poor and deteriorating industry conditions and magnified by the herd behavior of inexperienced funds, but they are not driven by asset liquidity. Activism waves lead to...

Péter Bayer, Robert Gatenby, Patricia McDonald, Derek Duckett, Katerina Stankova et Joel Brown

2022

We propose a model of cancer initiation and progression where tumor growth is modulated by an evolutionary coordination game. Evolutionary games of cancer are widely used to model frequency-dependent cell interactions with the most studied games being the Prisoner’s Dilemma and public goods games....

Joan Calzada, Ester Manna et Andrea Mantovani

vol. 31, n° 3, 2022, p. 609–637

Price parity clauses (PPCs) are widely adopted by online platforms to force client sellers not to lower their prices elsewhere. We investigate under what conditions online travel agencies (OTAs) decide to apply PPCs, and how this affects hotels' listing decisions on OTAs. We find OTAs adopt PPCs...

Amanda J. Lea, Angela Garcia, Jesusa Arevalo, Julien F. Ayroles, Kenneth Buetow, Steve W. Cole, Daniel Eid Rodriguez, Maguin Gutierrez Cayuba, Heather M. Highland, Paul L. Hooper, Anne Justice, Thomas S. Kraft, Kari E. North, Jonathan Stieglitz, Hillard Kaplan, Benjamin C. Trumble et Michael Gurven

vol. 120, n° e2207544120, décembre 2022

A growing body of work has addressed human adaptations to diverse environments using genomic data, but few studies have connected putatively selected alleles to phenotypes, much less among underrepresented populations such as Amerindians. Studies of natural selection and genotype–phenotype...

Laurent Miclo, Pierre Patie et Rohan Sarkar

vol. 50, n° 6, 2022, p. 2085–2132

The first aim of this paper is to introduce a class of Markov chains on Z+ which are discrete self-similar in the sense that their semigroups satisfy an invariance property expressed in terms of a discrete random dilation operator. After showing that this latter property requires the chains to be...

Claire Borsenberger, Helmuth Cremer, Denis Joram, Jean-Marie Lozachmeur et Estelle Malavolti

sous la direction de Pier Luigi Parcu, Timothy J. Brennan et Victor Glass, Springer Nature Switzerland AG, 2022

The economic and societal roles of digital platforms are a hotly debated topic. They have been under close scrutiny by European competition authorities for a while and their US counterparts have now followed suit. The subject is also receiving increasing attention in the media and in political...

Sarah Lemaire (Toulouse School of Economics)

TSE, 2022

Chon Van Le, Tuan Anh Luong, Manh-Hung Nguyen et Viet-Ngu Hoang

décembre 2022

This paper adopts a two-stage stochastic frontier analysis framework to analyse the roles of foreign and domestic capital in the aggregate production of gross domestic product (GDP) and CO2-equivalent emissions across 36 OECD countries from 1990 to 2014. The first stage estimates a quadratic output...

Jad Beyhum, Jean-Pierre Florens et Ingrid Van Keilegom

vol. 40, n° 3, 2022, p. 1034–1045

This article analyzes the effect of a discrete treatment Z on a duration T. The treatment is not randomly assigned. The confounding issue is treated using a discrete instrumental variable explaining the treatment and independent of the error term of the model. Our framework is nonparametric and...