The performance of corporations was highlighted from the view point of physical, human and information resources to strengthen risk preparedness and redundancy in urban area. Citizen activities in the suffered areas were supported by the suffered private companies as well as companies outside.
In order to clarify the enhancing mechanism in rescue and life support, decision making models were applied to each company behavior following to interviews and a questionnaire survey to the suffered corporations which had supported the suffered persons and individuals.
As result of the principal component analysis, extracted major principal component factors were interpreted to explain each decision sub-model respectively. In cluster analysis using these factors, the samples were divided into four clusters and some enhancing factors were extracted for each cluster. Those are as follows: 1) intimate communication in the channels of daily life activities of employee in local community, 2) opened active corporate management having area-wide information and product-based networking, and 3) past experiences of emergency control or disaster management education for executive directors of the corporation.