A Multiobjective Stochastic Production-Distribution Planning Problem in an Uncertain Environment Considering Risk and Workers Productivity

Table 1

Cost items distribution functions.

Cost item	Probability distribution
Product inventory holding cost ($/unit period)	Uniform (5,20)
Hiring cost (10$/manpower)	Normal (𝜇∶6,𝜎^2∶3)
Firing cost (10$/manpower)	Normal (𝜇∶10,𝜎^2∶3)
Salary cost (10$/manpower)	Uniform (20,30)
Training cost (10$/manpower)	Normal (𝜇∶20,𝜎^2∶5)
Production cost ($/min)	Uniform (0.5,1.5)
Transportation cost ($/unit)	Uniform (0.015,0.25)
Shortage cost ($/period. unit)	Normal (𝜇∶2.5,𝜎^2∶1.5)