Alain Guay, Professor of Economics at the University of Québec in Montreal (UQàM), will be at EconomiX for a stay from October 9 to 22, 2023. His areas of research focus on economic cycles, econometrics and quantitative methods. His areas of specialization fall within the themes of the International Macroeconomics, Banking and Financial Econometrics research axis of the EconomiX laboratory and the teaching provided in the Mention Master’s degree in Applied Economics from the Economics Department of the University of Paris Nanterre. Due to his strong integration into teaching and research teams, he invites regularly as a guest professor in the laboratory. The courses he teaches leave much room for sharing his experience as a researcher with Master’s students. He also actively participates in the life of the laboratory by commenting on the research papers of a certain number of teacher-researchers and doctoral students. His arrival is, therefore, an opportunity to consolidate the links between the two universities to encourage student mobility and research collaborations. During his stay, he will meet doctoral students and teacher-researchers from Economics. He will also teach a course at the level of the Applied Economics Master’s degree. This approach will focus on accurate cycle models with applications related to his research themes.