[Retracted] Safety Investment Decision Problem without Probability Distribution: A Robust Optimization Approach

Table 3

Parameter definitions.

Symbol	Name	Meaning
I	Safety investment	Resources utilized in safety, including human resources, capital, and material
D	Demand of safety investment	Amount of investment required to prevent accidents
AL	Accident loss	Losses caused when demand for safety investment exceeds the amount of investment
MAL	Marginal accident loss	Accident loss resulting from the investment of a unit when safety investment demand exceeds the actual investment
OL	Opportunity loss	Opportunity cost due to safety investment exceeding demand
MOL	Marginal opportunity loss	Opportunity loss resulting from the investment of a unit when actual safety investment exceeding demand
	Function of safety cost	Function of safety cost relative to input parameters I and D