Yu-Tai Chien

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BACKGROUND Physical activity is important for middle-agers to maintain health both in middle age and in old age. Although thousands of exercise-promotion mobile phone apps are available for download, current literature offers little understanding regarding which design features can enhance middle-aged adults' quality perception toward exercise-promotion(More)
Websites have become an essential component in firms' IT portfolios. Many business processes require website functionalities to operate smoothly. This study aims at investigating how firm website affects cost of equity, an important factor in firm valuation. We conducted a cross-sectional regression using a unique dataset consisting of 3,312 firm websites(More)
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