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Details

operations management
process control
26
Business
Post-Graduate
07/24/2011

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Cards

Term
learning curve theory
Definition

 

rate of learning (a particular task)

graphed

Term

Statistical Process Control Techniques

 

 

Definition

Monitoring and Investigating 

 

using tools such as:

Histograms, Check Sheets, Pareto Charts, Cause and Effect Diagrams, Defect and Concentration Diagrams, Scatter Diagrams, Control Charts (methods:  Classical Shewhart, Cumulative Sum CUSUM, Exponentially Weighted Moving Average EWMA, Multivariate)

Term
Total Quality Management (TQM)
Definition
a comprehensive system approach that works horizontally across an organization
Term
process 
Definition
 set of activities performed by an organization that takes inputs and transforms them into outputs 
Term
cycle time
Definition
the average time between completions of successive units in a process 
Term

utilization

 

Definition
ratio of the time that a resource is actually activated relative to the time that it is available for use
Term
buffering 
Definition
a storage area between stages where the output of a stage is place prior to being used in a downstream stage
Term
blocking
Definition
activities in the stage must stop because there is not place to deposit the item just completed
Term
starving
Definition
activities in a stage must stop because there is no work
Term
bottleneck 
Definition
resource that limits the capacity or maximum output of the process
Term
make-to-order
Definition
process that is activated only in response to an actual order
Term
make-to-stock
Definition
process that produces standard products that are stored in finished goods inventory
Term
hybrid
Definition
combines the features of both make-to-order and make-to-stock
Term
pacing
Definition
movement of items through a process is coordinated through a timing mechanism
Term
productivity 
Definition
ratio of output to input
Term
efficiency
Definition
ratio of the actual output of a process relative to some standard
Term

run time

 

Definition
time required to produce a batch of parts
Term
setup time
Definition
time required to prepare a machine to make a particular item
Term
operation time
Definition
sum of the setup time and run time for  batch of parts that are run on a machine
Term
setup time
Definition
time required to prepare a machine to make a particular item
Term
operation time
Definition
sum of the setup time and run time for a bath of parts that are run on a machine
Term
throughput time
Definition
average time that it takes a unit to move through an entire process  
Term

process velocity 

(throughput ratio)

Definition
ratio of the total throughput time to the value-added time
Term
value-added time
Definition
time in which useful work is actually being done on the unit
Term
Little's Law
Definition

states a mathematical relationship between throughput rate, throughput time, and the amount of work-in-process inventory

(throughput time is equal to work-in-process divided by the throughput rate)

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