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What Is Certain about Uncertainty?

By Danilo Cascaldi-Garcia, Cisil Sarisoy, Juan M. Londono, Bo Sun, Deepa D. Datta, Thiago Ferreira, Olesya Grishchenko, Mohammad R. Jahan-Parvar, Francesca Loria, Sai Ma, Marius Rodriguez, Ilknur Zer, and John Rogers

Journal of Economic Literature, June 2023

This paper provides a comprehensive survey of existing measures of uncertainty, risk, and volatility, noting their conceptual distinctions. It summarizes how they are constructed, their relative advantages in usage, and their effects on financial market a...

The Impact of Public–Private Partnerships (PPPs) in Infrastructure, Health, and Education

By ´¡²Ô²¹Ã¯²õ Fabre and ³§³Ùé±è³ó²¹²Ô±ð Straub

Journal of Economic Literature, June 2023

This paper summarizes what is known about the impact of public–private partnerships (PPPs) in the three sectors where they have been used intensively: infrastructure (energy, transport, water and sanitation, and telecommunications), education, and healt...