Chapter 10. Evils of Long Response Times
Long response times for service, for production, and for development processes are a major concern in today's management world. In this chapter, we examine the relationship between response time and the amount of work in process (WIP), so that we may find ways to shorten these times.
Types of Inventories
The management of physical inventories (hardware, components, materials, documents, or files) and nonphysical and human inventories (pieces of software, business information to be processed, patients in the hospital or waiting for tests, or customers waiting in a bank) plays an important role in the management of business systems, operational systems, health care systems, and not‐for‐profit systems. Three types of inventories are shown in Figure 10-1 .
Figure 10.1. Figure 10-1: Types of inventories
Examples of work in process (WIP):
Software and hardware that are still in development
Items on an assembly line
Purchase orders in the negotiating process or in the approval stage
Receipts handled in the accounting department
Business information ...
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