Browsing by Author "Chen, Yi-Fen"

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The Effects of Electronic Word of Mouth on Product Judgment and Choice: The Moderating Role of the Sense of Virtual Community
(2012-09-01)
Huang, Jen-Hung
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Hsiao, Teng-Tai
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Chen, Yi-Fen
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管理科學系
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Department of Management Science
Electronic word-of-mouth (WOM) communication influences potential consumer attitudes and behavioral intentions toward a product. Since consumers frequently assess online information based on their relationships with communities, rather than with individuals, online communities themselves function as referents for assessing information quality. This study examines whether consumer perceptions toward virtual communities (i.e., sense of virtual community or SOVC) moderate the perceived influence of product comments on attitude and purchase intention. This study manipulated 2 scenarios involving positive comments and negative comments regarding a newly issued game product. Analytical results indicated that SOVC reinforced the influences of online comments on attitude and purchase intention. Thus, marketers should consider the role of virtual communities when implementing WOM strategy online.
The lowest stability and bifurcation in supercritical Taylor vortices
(2010)
Lin, Hau-Chieh
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Chen, Bi-Chu
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Chen, Yi-Fen
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機械工程學系
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Department of Mechanical Engineering
Here, we numerically investigate the lowest stability and bifurcation boundary of supercritical Taylor vortices in flows with different wavenumbers and for various radius ratios; the radius ratios range from those corresponding to axisymmetrical Taylor vortex flow (TVF) to those corresponding to wavy vortex flow (WVF). The variation in the wavenumber of a supercritical TVF is found to affect the stability of the flow, because the wavenumber of the Taylor vortices remains constant only when the flow is quasi-static. The variation in the wavenumber is examined and found to be significant when the radius ratio is less than 0.7842. The results for TVF are compared with those for the flow during the quasi-static transition from TVF to WVF.