1,170 research outputs found
Moral disengagement of hotel guest negative WOM : moral identity centrality, moral awareness, and anger
Adopting a moral identity perspective, this research examines the moral judgment of hotel guests’ vindictive negative word of mouth (WOM) toward hotel service failure. This research finds that people with higher moral identity centrality are less prone to moral disengagement of vindictive negative WOM, especially when their moral awareness of the behavior is higher. However, even these individuals may engage in moral disengagement of vindictive negative WOM, if they have higher anger toward the service failure, and when their moral awareness is lower. These findings highlight the significant roles of moral identity centrality, moral awareness, and moral emotion for people’s moral judgment. Practically, this research suggests hotels may manage customer vindictive negative WOM by raising moral awareness and appeasing anger
Study on Flexural Strength and Flexural Failure Modes of Carbon Fiber/Epoxy Resin Composites
The flexural failure modes and flexural strength of unidirectional carbon fiber/epoxy (CF/epoxy) composites was theoretically analyzed and calculated. The hypothesis that the maximal flexural strength of unidirectional CF/epoxy composites occurred in outer sheet layer was brought forward. Load-displacement curve of unidirectional CF/epoxy composites also demonstrates that it is correct, which is consistent with the assume. Unidirectional CF/epoxy composites were fabricated with winding and compression molding, and three different kinds of fiber packing modes were proposed and the effects of these modes on flexural prosperities of composites had also been analyzed respectively. Three failure modes, namely fracture of fiber, fracture of epoxy resin and interfacial delamination between fiber and matrix, were analyzed by scanning electron microscopy (SEM). The load-displacement curve of unidirectional CF/epoxy composites indicates the plastic deformation is increased with increasing phenolic resin
Electronic origin of spin-phonon coupling effect in transition-metal perovskites
By applying Wannier-based extended Kugel-Khomskii model, we carry out
first-principles calculations and electronic structure analysis to understand
the spin-phonon coupling effect in transition-metal perovskites. We demonstrate
the successful application of our approach to SrMnO and BiFeO. We show
that both the electron orbitals under crystal field splitting and the
electronic configuration should be taken into account in order to understand
the large variances of spin-phonon coupling effects among various phonon modes
as well as in different materials.Comment: 5 pages, 1 figur
Extended First-Principles Molecular Dynamics Method From Cold Materials to Hot Dense Plasmas
An extended first-principles molecular dynamics (FPMD) method based on
Kohn-Sham scheme is proposed to elevate the temperature limit of the FPMD
method in the calculation of dense plasmas. The extended method treats the wave
functions of high energy electrons as plane waves analytically, and thus
expands the application of the FPMD method to the region of hot dense plasmas
without suffering from the formidable computational costs. In addition, the
extended method inherits the high accuracy of the Kohn-Sham scheme and keeps
the information of elec- tronic structures. This gives an edge to the extended
method in the calculation of the lowering of ionization potential, X-ray
absorption/emission spectra, opacity, and high-Z dense plasmas, which are of
particular interest to astrophysics, inertial confinement fusion engineering,
and laboratory astrophysics
- …