Inventory in days or turns

I am going gaga about this Linear Thinking in a Nonlinear World

article from HBR.

One of the questions is if your company does inventory in days or turns and why?

Walmart has 360 inventory turns on its toilet tissue

an observation from What the CEO wants you to know book by Ram Charan.

Early delivery suppliers are fined by Walmart in light of ‘On Time In Full’ supply management.

Honeywell Inventory Analysis