Langerhans' cell histiocytosis can manifest as three distinct clinicopathologic entities: acute disseminated Langerhans' histiocytosis (previously known as Letterer-Siwe disease), unifocal Langerhans' cell histiocytosis (previously known as eosinophilic granuloma).
average handle time (AHT) Average handle time (AHT) is a call center metric for the average duration of one transaction, typically measured from the customer's initiation of the call and including any hold time, talk time and related tasks that follow the transaction. AHT is a prime factor when deciding call center staffing levels.
Many factors can influence your company's lead time policy, including: 1  Manufacturing environment (assemble-to-order, make-to-order) 2  Fixed or variable quantities. 3  Serial or overlap operations. 4  Fixed or variable time. 5  Number of shifts and operators. 6  Factoring by efficiency. 7  Protection.