D-DEMATEL: A new method to identify critical success factors in emergency management
Due to the variety and destructiveness of disasters, emergency management has emerged as a world theme and attracted more and more public attention. A large quantity of research on optimizing the emergency management has been done while still has improvement space. In this paper, a new method called D-DEMATEL which combines D number theory and decision-making and evaluation laboratory (DEMATEL) to identify the critical success factors (CSFs) in emergency management is proposed. Firstly, multiple experts evaluate the direct relations of influential factors in emergency management respectively from positive and negative side. The evaluation results are presented as intuitionistic fuzzy numbers (IFNs). Secondly, convert the IFNs into D numbers and use the combination rule of D numbers to fuse group opinions. Thirdly, based on DEMATEL, the cause-effect classification of factors can be obtained. Finally, the factors in cause category are identified as CSFs in emergency management. Based on the proposed method, the optimization of emergency management can be efficiently simplified into optimizing the identified CSFs. The proposed method is well addressed the fuzziness and subjectivity in linguistic assessment. Hence, the proposed method is well applicable to identify the CSFs in emergency management which inherently has a linguistic assessment process.
Multiple experts evaluate the direct relations of influential factors in emergency management respectively from positive and negative side. The evaluation results are presented as intuitionistic fuzzy numbers (IFNs). Convert the IFNs into D numbers and use the combination rule of D numbers to fuse group opinions. Based on DEMATEL, the cause-effect classification of factors can be obtained.The factors in cause category are identified as CSFs in emergency management.
Quantitative modelling
Identified CSF in emergency management (in order of importance):•F2 - reasonable organizational structure and clear awareness of responsibilities•F9 - clear procedure of reporting and submitting information•F6 - government unity of leadership to plan and coordinate as a whole•F10 - application of modern logistics technology•F5 - regular organization of simulated disaster exercise•F4 - education campaign on disaster prevention and response
Authors describe the way to combine different theories through following their technical research step by step. However, someone who understands the formulas of these theories should read the article for further information.
Procedure of identifying CSFs in emergency management based on D-DEMATEL:Expert evaluation on the direct relations of influential factors in researching systemFuse group opinions based on D number theoryUse DEMATEL to identify the CSFs
Based on D number theory and decision-making and evaluation laboratory (DEMATEL), a new method called D-DEMATEL to identify critical success factors (CSFs) in emergency management is proposed
Compared with fuzzy DEMATEL and evidential DEMATEL, D-DEMATEL is well addressed the fuzziness and subjectivity in linguistic assessment and more applicable to identify the CSFs in emergency management, which inherently has a linguistic assessment process.
Compared with the existing methods, D-DEMATEL has ability to obtain the total relations of influential factors and identify the CSFs in emergency management.The optimization of these CSFs can promote the overall welfare of emergency management.
To combine D number theory and decision making and evaluation laboratory (DEMATEL) to identify the critical success factors (CSFs) in emergency managementTo enhance the efficiency of emergency management optimization.
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