研究團隊於學術期刊「生產力分析雜誌」（Journal of Productivity Analysis）發表題為「部分凸生產技術及效率測量」（Partially Convex Production Technology and Efficiency Measurement）的學術文章，分析了部分凸生產技術的構建及其效率測量的應用。有關研究為研究資助局2021/2022年度本地自資學位界別競逐研究資助計劃下的「教員發展計劃」資助項目「結構效率測量的統一框架：理論與應用」（UGC/FDS15/E02/21）成果的一部分。
論文摘要（英文）：
Economists tend to believe that production technology should exhibit increasing returns to scale first and then constant and finally decreasing returns to scale, called regular variable returns to scale (RVRS) in this paper. Further, a special pattern of RVRS production technology when there is only one output is the production function that has an S-shaped curve along any ray of inputs from the origin. In the literature on efficiency analysis, the most frequently used empirical technology is the variable returns to scale (VRS) production technology. Although it exhibits RVRS, it is unable to model nonconvex production technologies, such as the S-shaped production function. Recently, a new empirical production technology has been introduced to capture RVRS with partial convexity. This paper explores its relationship with efficiency measurement. Furthermore, a novel empirical production technology that can better capture the characteristics of the S-shaped production function is proposed. These two new production technologies provide better alternatives to the commonly used Free Disposal Hull (FDH) production technology in non-convex production with RVRS. Our new production technology is illustrated using US manufacturing industry data. If one believes that the production technology is partially convex and exhibits RVRS, it is found that the conventional VRS production technology overestimates the technical inefficiency of small production units under this belief.