| Design |
 |
|
|
|
|
|
|
|
| |
Subjects considered
by Operations Management and Industrial Engineering can be divided
into two broad areas: those relating to the design of systems
and those related to the operation of systems. In this section
we consider subjects related to design. The subjects considered
parallel the Excel add-ins available for computational procedures.
Details of the algorithms may be found in the Computations
section of this site. |
| |
|
Inevitably there will be more than one design that fulfills the
function of a proposed system. In order to select one, there must
be some criterion with which the alternatives can be compared.
An important aspect is the economics of the design. Design decisions
result in several economic effects. If the design is selected,
some investment is required to install the system. After installation,
the system will operate over a period of time while revenues are
generated and operation costs are expended. If alternative designs
are to be compared it is necessary to integrate the various costs
and revenues associated with the design. This section describes
procedures associated with time-value of money comparisons. |
| |
|
A plant may be viewed as a large number of finite geometric areas
arranged on the floor space of the building. The problem of arranging
these areas in an effective manner is the facility layout problem. |
| |
|
In this section we construct a flow analysis model that describes
the processes, operations, machines, raw materials, and resources
associated with production. Flow analysis is an abstraction of
the production process that neglects the detail concerned with
individual items of product, but considers the collection as a
flow. Thus most of the parameters of the model relate to averages
over time. Although certain responses of the system are lost with
flow analysis, a number of questions important to system design
and operation can still be addressed. |
| |
|
A project involves a collection of activities that must be performed
to accomplish some goal. Often there are precedence relations
that require that before some activities may begin, others must
already be completed. An important aspect of project management
is scheduling the activities in time. This section provides formulas
for computing early and late times for each activity in a project. |
| |
|
|
|
