What is the poverty headcount ratio gap severity elasticity index ratio threshold line incidence reduction strategy program cycle trap line threshold gap severity elasticity index ratio threshold line incidence reduction strategy program?

What is the poverty headcount ratio gap severity elasticity index ratio threshold line incidence reduction strategy program cycle trap line threshold gap severity elasticity index ratio threshold line incidence reduction strategy program?

The question seems to be a repetition of various terms related to poverty measurement and reduction strategies. It does not make sense as a coherent question. Could you please provide a clear and concise question related to the topic of economics and poverty?