Expanding the use of renewable energy is a matter of concern in many countries. Many Japanese local municipalities are attempting to promote business creation using renewable energy as an opportunity for regional revitalization based on the policy of the Japanese government. Renewable energy makes significant contributions to the region in terms of energy security, stable energy supply, and job creation. However, the most important contribution is enhancing residents' attachment to their community and supporting actions that appeal to the community through renewable energy utilization. Residents should actively participate in regional revitalization, which leads to sustainable prosperity of the region. However, the current measures of local municipalities seem to be lacking such a viewpoint. This study aims to analyse the environmental and economic aspects as well as the social acceptance of establishing a bathing business that utilizes woody biomass as its heat source. This study also discussed how the generation of heat from woody biomass contributes to regional revitalization. The case study area was Kobe and Mt. Rokko, Japan. First, heat production and utilization was assumed for the forest resources in Mt. Rokko, and the annual biomass energy production potential was estimated. The annual costs of lumber cutting, transportation, and chipping, and the annual CO 2 reduction by substituting bunker A with woody biomass for heat production were also estimated. A questionnaire survey was conducted to determine community awareness of energy production using woody biomass from Mt. Rokko. Principal component analysis, contingent valuation method, and path analysis were used to quantify respondents' awareness.

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The acceleration ef the spindle in the axial direction was measured when prehardcn steel was slotted with a square end mill under several cutting conditions,The signal ofthe accelerometer was stored and processed through digital Fourier transformation on a personal computen The power spectra had peaks in a distinctive frequency range when chatter occurred. There is a threshold value of the ratio of the maximum intensity in the range to the one at the frequency ofinterrupted cutting by edges for detection ofchatter.

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