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Consumers’ willingness to pay for ethical consumption initiatives on e-commerce platforms
WANG Er-peng, AN Ning, GENG Xian-hui, Zhifeng GAO, Emmanuel KIPROP
2021, 20 (4): 1012-1020.   DOI: 10.1016/S2095-3119(20)63584-5
Abstract148)      PDF in ScienceDirect      
Despite China’s fast-growing e-commerce and its great achievement in promoting poverty alleviation through consumption, little is known about Chinese consumers’ online ethical consumption.  Using the payment card elicitation method, this paper designs a within-subject survey and a between-subject survey to investigate Chinese consumers’ quality perception and preference for apples from poverty-stricken areas.  The results show that before “information shock”, emphasizing that taste and safety attributes of apples from poverty-stricken areas are the same as the conventional ones, Chinese consumers on average are willing to pay a 31% premium for apples from poverty-stricken areas.  After “information shock”, both the within-subject and between-subject designs show a minimal drop of the premium, implying that the ethical attribute is the main motivation for buying apples from poverty-stricken areas.  The regression results show that quality perception of private attributes has significant effect on consumers’ willingness to pay (WTP) for apples from poverty-stricken areas, and trust in government supervision of e-commerce plays an essential role in motivating online ethical consumption.     
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NDVI-Based Lacunarity Texture for Improving Identification of Torreya Using Object-Oriented Method
HAN Ning, WU Jing, Amir Reza Shah Tahmassebi, XU Hong-wei , WANG Ke
2011, 10 (9): 1431-1444.   DOI: 10.1016/S1671-2927(11)60136-3
Abstract1778)      PDF in ScienceDirect      
Normalized Difference Vegetation Index (NDVI) is a very useful feature for differentiating vegetation and non-vegetationin remote sensed imagery. In the light of the function of NDVI and the spatial patterns of the vegetation landscapes, weproposed the lacunarity texture derived from NDVI to characterize the spatial patterns of vegetation landscapes concerningthe “gappiness” or “emptiness” characteristics. The NDVI-based lacunarity texture was incorporated into object-orientedclassification for improving the identification of vegetation categories, especially Torreya which was the targeted treespecies in the present research. A three-level hierarchical network of image objects was defined and the proposed texturewas integrated as potential sources of information in the rules base. A knowledge base of rules created by classifierC5.0 indicated that the texture could potentially be applied in object-oriented classification. It was found that the additionof such texture improved the identification of every vegetation category. The results demonstrated that the texture couldcharacterize the spatial patterns of vegetation structures, which could be a promising approach for vegetation identification.
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