This study focuses on differences of luminance of light due to inspection environment, and considers experimentally the effect of luminance of light on defect detection in visual inspection utilizing peripheral vision. In the experiment, the luminance of light, defect locations, and defect characteristics （luminance contrast and size） were designed as experimental factors, and their effect on defect detection rate was evaluated. As a result, it was clarified that the defect detection rate is low in case that the luminance of light is 0lx and the rate increases in case that the luminance is between 1500lx and 6000lx. Moreover, it was found that the tendency also depends on the defect locations and surface luminance of defect （evaluation index of visibility of defects that was proposed in previous study）. From the above, in order to realize highly accurate visual inspection, it is necessary to control appropriately inspection environment according to a field of vision using for inspection （range of inspection by one fixation point） and surface luminance of defect.

This study aimed to clarify the effects of floor and air temperature change during floor heating onset on physiological and psychological responses in the human body. The experiments were conducted in an experimental house with 8 healthy young women wearing winter clothes（0.9clo）. The participants were exposed to 4 conditions with different heating rates at floor heating onset for 210 min including a 30 min rest, while sitting on a chair. Skin and core temperatures were measured, and the participants were asked to report thermal sensation and comfort. As a result, when floor temperature was increased rapidly during floor heating onset, the change in skin temperature was delayed, and core temperature decreased. In addition, the participants tended to feel more comfortable when their rating of thermal sensation was high as they continued to feel warm despite the high floor temperature of approximately 40℃. We found that not only sole and mean skin temperature but also the decrease of core temperature was related to thermal sensation. These findings suggest that setting the floor temperature based on thermal sensation and comfort during floor heating onset may lead to excessive heating.

This study aims to clarify the effects of worn-out shoes on the lower limb stability among women. Based on the measurement results of the degree of wear in the shoes used by 49 young women, three conditions with a broad worn-out outer lateral portion of the heel were identified. Nine subjects wearing shoes of similar wear shape walked and the floor reaction force was measured. Our results show that shoes with a wear thickness of 7.4 mm and an outward camber angle of 8.0° increased the fluctuation in the medial and lateral direction of center of foot pressure from the heel contact to the loading response. In contrast, for shoes with a wear thickness from 1.0 to 4.0 mm and an outward camber angle of 1.0° to 4.3°, the fluctuation was reduced as compared to shoes without a worn-out sole. The results of this study suggest that the warped shape of the sole heel portion is effective for lower limb stability, but if the inclination to the outside because of wear increases, instability is promoted.