Frequency
发表于 2025-3-28 16:41:37
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龙虾
发表于 2025-3-28 20:02:03
Difference between Adoption and Access Frequency to Internet and Consumer Surplusn has grown rapidly last decade. These new goods and services have a significant impact on consumer welfare. Many studies have tried to quantify these economic impacts by measuring consumer surplus (Nevo 2001; Petrin, 2002, Goolsbee and Petrin, 2001; Greenwood and Kopecky, 2007).