National Chengchi University

About: National Chengchi University is a education organization based out in Taipei, Taiwan. It is known for research contribution in the topics: Population & China. The organization has 3465 authors who have published 6342 publications receiving 118821 citations. The organization is also known as: NCCU & Chengda.

High spin polarization of the anomalous Hall current in Co-based Heusler compounds

Abstract: Based on first principles density functional calculations of the intrinsic anomalous and spin Hall conductivities, we predict that the charge Hall current in Co-based full Heusler compounds Co2XZ (X = Cr and Mn; Z = Al, Si, Ga, Ge, In and Sn), except Co2CrGa, would be almost fully spin polarized, even though Co2MnAl, Co2MnGa, Co2MnIn and Co2MnSn do not have a half-metallic band structure. Furthermore, the ratio of the associated spin current to the charge Hall current is slightly larger than 1.0. This suggests that these Co-based Heusler compounds, especially Co2MnAl, Co2MnGa and Co2MnIn which are found to have large anomalous and spin Hall conductivities, might be called anomalous Hall half-metals and could have valuable applications in spintronics such as spin valves as well as magnetoresistive and spin-torque-driven nanodevices. These interesting findings are discussed in terms of the calculated electronic band structures, magnetic moments and also anomalous and spin Hall conductivities as a function of the Fermi level.

Exploring consumer value of multi‐channel shopping: a perspective of means‐end theory

Abstract: Purpose – With advances in information technology, multi‐channel shopping (MCS) has become a prevailing purchasing pattern today. Although MCS provides more benefits than single‐channel shopping, there is a need to investigate consumer values in the MCS context. This study aims to develop a consumer value hierarchy that represents how consumers think and pursue when performing MCS.Design/methodology/approach – The research framework was developed from a perspective of means‐end theory. Two studies were designed to elicit and evaluate a consumer value hierarchy of MCS. First, a qualitative study was conducted to explore means‐end elements of MCS. Then, a hierarchical value map of MCS was constructed with 314 usable responses from an empirical survey in Taiwan. The impacts of past shopping experience on consumers' value perceptions were also examined.Findings – In the hierarchical value map (HVM) of MCS, the results indicate 18 means‐end chains from ten MCS attributes resulting in nine consequences derived ...

Third-Person Effects of Health News: Exploring the Relationships Among Media Exposure, Presumed Media Influence, and Behavioral Intentions

Abstract: This study expands third-person effect research to health news coverage. It examines the perceptual and behavioral components of third-person effects. Moderator variables of third-person effects--knowledge and exposure to health news--are also examined. Using data from a survey of public opinion about the coverage of avian flu involving a probability sample of 1,107 college students in Taiwan, findings show that respondents tend to think the influence of avian flu news on others is greater than on themselves. Furthermore, exposure to avian flu news was found to narrow the self--other perceptual gap. Regarding the linkages between the third-person perception of avian news and behavioral responses to the perception, findings show that perceived effects of avian flu news on the self resulted in taking action--seeking information about avian flu and seeking out Tamiflu. However, findings further show that the third-person perception acted like a brake on taking such action.