Sentiment analysis is widely adopted in studying various important topics in business intelligence. Though many studies reported interesting results by using machine learning, the lack of theoretic analysis and the shortage of practical guidance are hurdles of theory development. Besides, due to...

A society is composed of different socio-economic groups. At a given time, individuals in the society can be classified into different such groups. With the change of time, individuals can move across different groups. Social mobility is viewed as an aggregation of such individual movements...

China has experienced extensive forest transition. The biophysical conditions and socio-economic effects in different regions are quite different in such a large country. However, few studies have paid attention to local dynamics to understand how forest transition has taken place at the local...

Using recently developed industry-specific purchasing power parities (PPPs), we test for β-convergence and σ-convergence of labor productivity at one-digit and two-digit industrial levels for 17 OECD countries. We confirm that the principal finding of Bernard and Jones (1996)—that...

Since March 2020, numerous models have been developed to support policymakers in understanding, forecasting, and controlling the COVID-19 pandemic. Differences in data, assumptions, and underlying theory, coupled with unknowns about a novel virus, led these models to generate divergent forecasts...

Voting referenda provide direct evidence of the demand for public goods. A number of previous studies have used referenda to analyze the support for public environmental goods. These studies have used aggregate data from large jurisdictional units (usually counties) and summary income measures...