(1) questions that identify the effects of system properties on resilience criteria; (2) questions that assess the relative importance between different resilience criteria; (3) questions that assess the implementation difficulty of each system property; (4) questions that assess the sig- nificance of effects of system properties on resilience crite- ria; (5) questions that identify the correlations between differ- ent system properties; and (6) questions that are related to background information of the respondents, including gender, age, job responsibility, work experience, and profession