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 cycle?

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 cycle?

The question seems to be a repetition of various terms related to poverty measurement and reduction strategies. It is not clear what the question is asking for. Could you please provide a more specific question or clarify the context?