Lesson 9 - Scheduling

Question 1

Scheduling

Answer 1

Establishing the timing of the use of equipment or other resources, occurs in
every organization. Scheduling decisions are final step before actual output occurs, objective:
trade-off between efficient utilization and minimization of customer waiting time.
Encompasses allocating workload to work centers and determining sequence of work

Question 2

Success determinants

Answer 2

Process&Product Design, preventive maintenance, rapid repair, optimal product mixes with minimized costs, minimization of quality problems, reliability & timing of supplies

Question 3

Low-Volume Systems

Answer 3

Systems that handle customized or variable jobs, often with unique requirements

Question 4

Intermediate-Volume Systems

Answer 4

Systems that periodically switch from one type of job to another, typically producing in batches

Question 5

High-Volume Systems

Answer 5

Systems that handle large quantities of standardized products using standardized equipment linear flow, e.g. car manufacturing

Question 6

Gantt Charts

Answer 6

chart used as visual aid for loading/scheduling purposes: organize use
of resources in a time framework (kind of like a classroom schedule) Two Types

Question 7

Load Chart

Answer 7

depicts loading & idle times1 for a group of machines/depart.
Inifinite loading: assigns jobs without regard to capacity→over(under)loads:
manager needs to find response (shift to other periods, overtime, subcontract) Finite loading: projects actual job starting/stopping times with capacity
For(back)ward scheduling: scheduling ahead/backward from a point in time

Question 8

Schedule Charts

Answer 8

monitor progress of jobs and whether they are on schedule

Question 9

Input/Output control

Answer 9

managing workflows and queues at work centers, balance input and output rates, so the center is neither under(over)utilized: stoplights on expressway
on ramps. Report reveals deviations from plan

Question 10

Job Flow time

Answer 10

time it takes from when job arrives until it’s complete (incl.waiting)

Question 11

Job lateness

Answer 11

difference between actual completion and due date

Question 12

Makespan

Answer 12

time needed to complete a group of jobs/I think just processing time

Question 13

Average number of jobs

Answer 13

Total flow time/makespan