Mingjun Li

Oct 7, 2024 | rairo-ro.org | Jie Wu |Wei Wang |Mingjun Li |Xiang Ji

RAIRO-Oper. Res. 58 (2024) 4035–4067Agency or reselling: optimal return policy in E-commerce retail systems under cap-and-trade regulation, , * and School of Management, University of Science and Technology of China, Hefei, Anhui Province 230026, P.R. China * Corresponding author: [email protected]: 25 April 2023Accepted: 7 July 2024AbstractIn recent years, the government has issued regulations on environmental protection, carbon emissions, and trading.

Sep 13, 2024 | mdpi.com | Ping Song |Mingjun Li |Haonan Wang |Yi Cheng

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Nov 28, 2023 | frontiersin.org | Shandong Agricultural |Shandong Academy |Mingjun Li |Lei Zhou

1 IntroductionChina, known as one of the most significant apple native centers in the world (Shu and Zhang, 2021), holds the top position in global apple production and planting areas. In 2022, China’s total apple production increased by 3.4% compared to 2021, reaching 47.571 million tons. Potassium is an essential nutrient element for the growth and development of apple trees (Wang et al., 2019).

Oct 27, 2023 | mdpi.com | Shuang Han |Mingjun Li

1. IntroductionAs an important class of differential equation, the hyperbolic conservation equation has a wide application in scientific and engineering fields. One of the characteristics of this equation is that the solution may generate discontinuities even if its initial condition is smooth.