Abstract The paper considers testing and signal identification for covariance matrices from two populations of marginally sub-Gaussian distributed. A multi-level thresholding procedure is proposed for testing the equality of two high-dimensional covariance matrices, which is designed to detect sparse and faint differences between the covariances. A novel U-statistic composition is developed to ...

Sep 11, 2024

Abstract There is a long-standing debate in the literature about the effectiveness of strengthening judicial independence in developing countries with weak rule of law. This paper exploits a recent Chinese judicial reform in administrative litigation, which changed the jurisdiction rule from intra-regional to trans-regional, to estimate the effects of improved judicial independence on protectin...

Sep 11, 2024

This paper addresses the gap by comparing the responses of traditional taxis and ridesharing platforms like Uber to unexpected urban events. Using a difference-in-differences econometric model on large-scale trip data, we find that ridesharing platforms outperform traditional taxis in handling uncertainties caused by anomalies.

Sep 5, 2024

The article is about a quantitative model with long-term debt where shareholders cannot commit to not dilute existing lenders with new debt issuances.

Sep 3, 2024

Organizations around the globe are increasingly focusing on Diversity, Equity, and Inclusion (DEI) to create fair and equitable workplaces. However, the effectiveness of DEI initiatives often depends on whether these practices are implemented in isolation or as part of a comprehensive strategy. A recent study by Dr. Kaifeng Jiang and his coauthors, published in the Academy of Management Journal, delves into how three main categories of DEI practices—resource, non-discrimination, and accountability—interact and impact turnover rates for women and racialized employees and leaders.

Jun 12, 2024

We investigate how exposure to the One-Child Policy (OCP) during early adulthood affects marriage and fertility in China.

May 31, 2024

Chinese scholars visiting Tokyo shared their views on the current state and future trajectory of China's economy, refuting claims from some countries that China's economy has peaked and is facing overcapacity.

May 27, 2024

Social skills are important but difficult to measure. So far, few empirical studies have examined the effect of social skills on the performance of professionals.

May 23, 2024

In an exclusive interview with China Daily, Liu said that a key means to achieve this is to attract more qualified, institutional long-term investors to the A-share market.

May 9, 2024

This paper is published on Journal of Applied Psychology.

Apr 24, 2024