27
2.2.2.1 Inputs and Outputs
For inputs and outputs, there is establishing interaction between the
process
and
its
environment.
In
addition,
inputs and outputs identify the
process boundaries
in order to easy
to
identify
the
input consumed
from
the
environment
in
order
to
produce
the
desired
output
(Manuel, L &
Marklund, J (2005). Process inputs and outputs can be:
Tangible
For example: raw material, spare parts, cash, products, customers.
Intangible
For example: Information, time, energy, and services.
2.2.2.2 Flow units
A flow unit is a transient entity or a job that proceeds through the
network of activities and buffers and exits the process as a
finished
output. Typically, the identity of a flow unit changes across the process.
Examples of common flow units: materials, orders, files, documents,
customers,
products,
cash,
and
transactions.
Flow
rate
is
the
number
of
jobs flowing through the process per time unit ( Manuel, L & Marklund, J
2005).
2.2.2.3 The network of activities and buffers
 |