This interview sample survey of adult residents of San Francisco's Chinatown was conducted in an effort to understand the phenomenon of underutilization of mental health services by Chinese Americans and the reasons underlying this phenomenon. Findings revealed that the use rate of mental health services was extremely low, with only 5% of respondents having sought mental health services, suggesting that this ethnic community has not yet seen the gains promised by the community mental health movement. At the same time, reported psychological disorders in the community were quite prevalent; a sizable number of respondents admitted to symptoms of emotional tension, depression, loneliness, and psychological‐physiological symptoms. Thus, need is high, but demand is small. Findings suggested that underutilization is not due to unwillingness to admit to symptoms nor to use of alternative cultural sources of help; rather, lack of knowledge of existing services seems to be a major contributor to low use rates. Other contributing factors include the belief among some respondents that mental disorders cannot be prevented, lack of awareness of how psychological problems can be treated, and a low priority attached to seeking professional help for depression. Compared to other low‐income Americans, Chinatown residents demonstrated more determination than resignation in handling personal problems. Moreover, approaches to handling problems were varied and often multiple in nature. The survey confirmed some existing notions about mental health among Asian Americans, while disconfirming other assumptions.

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In this paper, a new structure for increasing the magnetic gear torque is proposed, which has high torque density and high mechanical properties. The permanent magnets (PMs) of the outer rotor are spoked and magnetized along the tangential direction. The PMs of inner rotor are the surface-mount type and magnetized in the radial direction. The PMs are fixed in the inner and outer rotors' iron yoke that the aim is to keep the PMs from falling off during the rotation. In order to reduce the amount of iron, it is considered to slot on the outer rotor. The two-dimensional finite element method is used for simulating the proposed model. The magnetic field and electromagnetic torque of the magnetic gear are calculated. Compared with the conventional magnetic gear, the results show that the torque transmission capability of the proposed magnetic gear can be substantially improved. INDEX TERMS Magnetic gear, permanent magnets (PMs), magnetic field, electromagnetic torque, finite element method.

Eccentric magnetic harmonic gears (EMHG) can achieve high speed ratio transmission and large torque output by modulating the air gap length between permanent magnets (PM). The analytical method is based on the boundary perturbation method. The vector magnetic potential perturbation equation in the air gap region is established, and the general solution is obtained using the boundary conditions. According to the superposition principle, the air gap flux density of stator and rotor PMs acting alone is synthesized, and the electromagnetic torque and unbalanced magnetic pull are calculated. Last, we compare magnetic field distributions, electromagnetic torque and unbalanced magnetic pull computed by the analytical method with those obtained from finite-element method (FEM). INDEX TERMS Eccentric magnetic harmonic gear, analytical method, magnetic field, electromagnetic torque, FEM.

Due to lacking the measurement results of magnetic properties under rotational magnetization, the application of nanocrystalline alloys for high-power system energy conservation has been limited. In this paper, a high-frequency rotational magnetic property testing system is first introduced. Base on the testing system, the rotating loci of the vector magnetic flux density B and the vector magnetic field strength H are measured. Finally, the rotational core loss and anisotropy of nanocrystalline alloys are discussed and analyzed.

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