| 2 | THERMODYNAMIC STUDY OF BAINITIC TRANSFORMATION IN Fe-C ALLOYS显示文摘The growth of bainitic ferrite is a couple process of the shear transformation of Fe atoms withthe diffusion of C atoms.The diffusion growth of the ferrite is impossible when the tempera-ture is below 400℃,and the paraequilibrium shear growth may occur at the temperature be-low 550℃.This paraequilibrium shear growth model explains the overlap of the bainitescreated from two growth mechanisms at 400—550℃. | WANG Shidao Lanzhou Rialway Institute,Lanzhou,ChinaYU Degang Shanghai Jiaotong University,Shanghai,China Correspondent:WANG Shidao Department of Mechanics,Lanzhou Railway Institute,Lanzhou,China | 1990 | Acta Metallurgica Sinica(English Letters)1990，3，1： | 0 |
| 3 | Complimentary return-freight insurance serves the dark side: An innovative online return policy in China显示文摘E-commerce is a typical form of retail digitalization that introduces online uncertainty and product returns.To decrease the negative influence of online uncertainty,the largest Chinese e-commerce company,the Alibaba Group,invited an insurance company to develop return-freight insurance(RFI),a new kind of insurance,to compensate for consumers'losses in the event of online product returns.Complimentary RFl can increase consumer confidence in the retailer and attract more demand.Retailers who offer complimentary RFI demonstrate to consumers that their products and services are too good to incur excessive product returns.However,some low-quality online retailers can mimic competitors'behavior by offering complimentary RFI to consumers.This study aims to introduce an innovative online return policy based on RFI and to explore whether lowquality online retailers would use complimentary RFI as their return strategy to mislead consumers.Using signaling theory,we built a conceptual economic model that includes three exogenous pricing variables:RF,insurance premium,and compensation.These variables play different roles in the model because consumers cannot observe the insurance premium,but the compensation can be.The main finding of this study is that innovative complimentary RFI could be abused by low-type retailers when the premium and compensation are appropriate.Interestingly,compensation plays different roles for retailers with different product values:low-type retailers use complimentary RFI as a noise tool.When the product works for the consumer and the insurance profit is not too high,the compensation for the low-quality product should be larger than that for the highquality product,which is different from conventional wisdom.Although high-type online retailers may use complimentary RFl as a product quality signal,there is still a significant risk that nefarious elements will use it to create product quality noise. | Shidao Geng Qingcheng Zeng Feng Liu Wenli Li | 2023 | Journal of Management Science and Engineering2023，8，2： | 0 |
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