After the Great East Japan Earthquake in March 2011, residents of the area affected by the Fukushima nuclear accident were forced to seek long-term shelter. International attention to mental health needs has increased along with reconstruction of life throughout the region. Mental health, suicidal thoughts and related factors in the 18 months after the Great East Japan Earthquake and Fukushima Daiichi Nuclear Disaster were examined in a community-based, cross-sectional study of 1,595 adults living in Fukushima. To determine mental status, we used the Japanese version of K6, which was developed to screen mood and anxiety disorders. Using a cut-off of 13 points, the frequency of poor mental health was 12.1% among all subjects. Thus, the frequencies of mental health problems and suicidal thoughts were high among residents forced to live in long-term shelters following a disaster. To improve the mental well-being of community-dwelling adults living for extended periods in shelters following a disaster, there is a need to focus on issues of unemployment, stress on the health of shelter dwellers and their families, stress on human relationships, social support, social capital, and suicidal thoughts.

In this paper, a design method of the reaction force control system for ultra-precision stage which equips vibration control system, is proposed. Taking the application to semiconductor manufacturing into consideration, the designed system deals with both the reaction force due to the stage movement and the vibration from the external environment. The experimental setup for a 6-degree of freedom (DOF) motion control system is firstly designed. The system is controlled by two counter weights that are placed eccentric from the center of gravity, i.e. two weights are not co-axial. Next, the system identification experiments based on a subspace method are performed to build the multi-input multi-output state-space model. The reaction force and vibration control systems are designed using the identified model based on bilateral control strategies. The main advantages of the proposed identification and control approach are that the experimental time for accurate identification is quite short and the control system can be systematically designed. Finally, the effectiveness of the proposed control system is verified through the vibration control experiments.

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