This paper employs a fully nonparametric stochastic frontier model with time and individual effects to study technical efficiency in China's post-reform economy. The panel data cover China's thirty provinces for the period of 1985-2008. The empirical results show that the average output...

Firms often register trademarks as they launch new products or services. We find that the number of new trademark registrations positively predicts firm profitability, stock returns, and underreaction by analysts in their earnings forecasts. Using the Federal Trademark Dilution Act (FTDA) as an...

In this study, we build a novel comprehensive dataset of 123,545 product trademark registrations by S&P 1500 firms to capture firm-level product development. We provide evidence that new product development contains valuable information about future firm fundamentals and predicts increases in...

To prolong the shelf life postharvest jujube, the effect of carbon monoxide (CO) on senescence of postharvest jujube in relation to active oxygen metabolism was investigated. Jujubes were fumigated with CO gas at 5, 10, 20 or 40μmol/L for 1 h, and then stored for 30 days at room temperature....

ZnO:Tm, Gd materials with high quality blue light emissions were successfully prepared using the chemical co-precipitation method. The surface morphology, composition, crystal structure and fluorescence properties were investigated using the thermogravimetric analysis/differential thermal...

This paper employs a fully nonparametric stochastic frontier model with time and individual effects to study technical efficiency in China's post-reform economy. The panel data cover China's thirty provinces for the period of 1985–2008. The empirical results show that the average output...

Research Highlights [black right pointing pointer] This paper presents a time-variant estimation of technical efficiency in post-reform China. [black right pointing pointer] A fully nonparametric stochastic model is used to measure technical efficiency. [black right pointing pointer] The average...