No abstract

Mobile chronic disease management systems (MCDMS) have become increasingly important in recent years, but in China, challenges remain for their adoption. Existing empirical studies have not completely explored the adoption behavior of potential MCDMS users. This article presents a study in which we investigated factors that influence chronically ill patients in China and their families to adopt or decline to use MCDMS. We applied a research model based on the technology acceptance model (TAM) as well as four contextual constructs (perceived disease threat, perceived risk, initial trust, and technology anxiety) to a survey of 279 potential MCDMS service participants in China. Our key findings include: (1) as consistent with current research, both perceived usefulness and perceived ease of use have positive impact on potential users' MCDMS adoption intention; (2) both perceived disease threat and initial trust have positive impact on MCDMS adoption intention; (3) the impact of perceived risk is negative, and technology anxiety has negative impact on perceived ease of use of MCDMS; (4) young people place more importance on their perceptions of usefulness, ease of operation, and disease threat than middle-aged and older users; (5) family members are more influenced by their perception of ease of use and disease threat than chronically ill patients, while chronically ill patients place more importance on perceived usefulness than family members. This article concludes by discussing the implications of our study for research and practice, as well as limitations and future research directions.

No abstract

No abstract

We report high-resolution far-infrared transmittance measurements and quantum-molecular-dynamics calculations of the two-dimensional tetragonal ͑T͒ high-temperature/high-pressure C 60 polymer, as a complement to our previous work on the C 60 dimer, and the one-dimensional orthorhombic ͑O͒ and two-dimensional rhombohedral (R) C 60 polymers ͓V. C. Long et al., Phys. Rev. B 61, 13 191 ͑2000͔͒. The spectral features are assigned as intramolecular modes according to our quantum-molecular-dynamics calculations. In addition, we determine the I h C 60 parent symmetry of each polymer vibrational mode by expanding the calculated polymer eigenvectors in terms of our calculated eigenvectors for I h C 60 . We find that many of the T-polymer vibrational modes are derived from more than one I h C 60 parent symmetry, confirming that a weak perturbation model is inadequate for these covalently bonded C 60 balls. In particular, strongly infrared-active T-polymer modes with frequencies of 606 and 610 cm Ϫ1 are found to be derived from a linear combination of three or more I h C 60 parent modes. As in the O and R polymers, modes of the T polymer with substantial T 1u (2) character, which are polarized in the stretched directions, are found to have large downshifts. Finally, in our comparison of theory with experiment, we find indications that the in-plane lattice of the T polymer may not actually be square.