This paper introduces a new estimation method for time-varying individual effects in a panel data model. An important application is the estimation of time-varying technical inefficiencies of individual firms using the fixed effects model. Most models of the stochastic frontier production function require rather strong assumptions about the distribution of technical inefficiency (e.g., half-nor...

Insufficient and high variability in rice yield is a threat to food security in China, prompting the need for strategies to mitigate yield variability and increase productivity. This study investigates the presence of production risk and technical inefficiency for a sample of rice farms in the Xiangyang city of China using a stochastic production frontier framework. Results from the risk functi...

In the last decade, the shipping industry and the global seaborne trade has witnessed a rapid growth due to globalization of the world economy, boom in international trade and borderless investments. As competition among international ports has intensified, the evaluation of port operational efficiency has become increasingly important to enable individual ports to reflect on its current status...

Broiler production has great potentials for increasing protein supply in Iran and plays a vital role in economic system of the country. In this study technical, allocative and economic efficiency of broiler production farms in Fars Province was estimated by using Data Envelopment Analysis approach (DEA) method. The results of the study reveal that under constant return to scale (CRS) and variab...

Abstract We investigate the impact of five types subsidies granted under European Union Common Agricultural Policy on persistent and transient inefficiency Polish dairy farms. Our research shows that coupled environmental reduce technical inefficiency, while opposite is true for Less Favoured Areas (LFA) other rural subsidies. Simultaneously, environmental, LFA, increase inefficiency. These res...