geobr is a computational package to download official spatial data sets of Brazil. The package covers a wide range of spatial data sets, available at various geographic scales and for various years ...

George R.R. Martin has said that if he never completes Game of Thrones sequel Winds of Winter (or the book after that), there's no plan for anyone else to step in. Instead, his Song of Ice and Fire ...

New AI tools have the potential to change the way workers perform and learn, but little is known about their impacts on the job. In this paper, we study the staggered introduction of a generative ...

The package contains functions to compute option-implied moments and characteristics from implied volatility surface data. The computations are based on the out-the-money (OTM) implied volatilities, ...