OM CH1-2 Flashcards
productivity
Productivity is defined as a total output per one unit of a total input.
total output/ 1 unit of input used
What does negative exponential mean?
average MM1
deterministic
exactly MD1
L and W meaning
W = waiting time, L = length in #
throughput time
time a product spends in the production process
throughput time with multiple paths
weighted average of the paths
effective capacity
actual output. The actual amount of products that are produced.
(design capacity is the theoretical maximum output of process)
what is the departure rate equal to?
the bottleneck
throughput time with parallel machines
stays the same as if there were only one machine
productive utilization rate
is used for batches. Fixed set-up time is not taken into account.
MTTR
MEAN TIME TO REPAIR
efficiency
efficiency = actual output/effective capacity
bottleneck is?
the process with the lowest design capacity in the system
labor productivity
output/ labor hour
utilization
actual output/ design capacity