Disaster Management with Fuzzy Sets and Engineering Economic Analysis

Abstract

With climate change, the issue of disaster management is becoming a major concern. Natural disasters such as floods, fires, storms, earthquakes, tornadoes, hurricanes, etc., are events which cause big potential losses in human living conditions. In order to prevent natural disasters from causing great losses, precautions should be taken by relevant experts and certain investments should be made. The preparation and mitigation stages of the disaster-management process have a significant impact on reducing losses. In addition, the economic situation and investment decisions for countries are of great importance in disaster management. Investment analysis and decisions are based on the thoughts and experiences of experts. Fuzzy sets are used in uncertain, indefinite, and vague situations in human thoughts. Spherical fuzzy sets are one of the extensions of fuzzy sets and give experts a wider scope for assigning membership functions. In this study, one of the important engineering economics techniques, called present worth analysis, is extended with interval-valued spherical fuzzy sets. The steps of the interval-valued spherical fuzzy present worth analysis are given and an illustrative application for a disaster management is shown. In the conclusion, suggestions for future studies are given.