Computer Simulation Modeling
MAS 547 – Fall 2022
Department of Management Science
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Healthcare Clinic
Consider a walk-in healthcare clinic with the following stations/offices:
Stations/offices
Service Times (Minutes)
Registration
Random.Triangular(1,2,3)
Random.Triangular(3,5,7)
Random.Triangular(7, 10.5, 14)
Random.Triangular(6,10, 14)
Random.Triangular(8,10,12)
Random.Triangular(14,18,22)
Random.Triangular(20, 25, 30)
Accounting
Random.Triangular(2,5,8)
The arrival rate of patients is 40 patients per hour. The clinic has distinct types of patients:
Type of Patient
Patient Mix (%)
The patient routing sequence is given in the following table:
Patient Routing Sequence
Assume that the healthcare clinic works 24 hours. Your model should include the following characteristics/features:
a) Entities should move from station to station instantaneously (0 simulated time)
b) Name the object instances in your model
c) Use Google 3D Warehouse or/and Simio symbols to find appropriate symbols for the model. Develop an interesting animation for your model
d) Create a status plot that displays (1) the instantaneous number of patients in the system and (2) the average number of patients in the system.
e) Create pie charts to show the utilization of each server.
f) Create an experiment with 20 replications, 500 hours of run-length, and 100 hours of warmup.
g) Compare your simulation results to steady-state queueing theoretic results to confirm that the simulation model is representing the system to be studied (baseline model).
h) Suppose the patient arrival rate increases by 5%. Can the current system handle the increase? What about 7%? 10%? Compare the expected time patients spend in the system (by patient type), waiting times at each station, and the number of patients in the system for the baseline, +5%, +7%, and +10% scenarios. (Use referenced Property to set up the four scenarios with different interarrival times)
i) Add an additional patient type ”Treat-Lab” (sequence: registration, lab, treatment, account, depart) such that proportions now become Walk-In 22%, Lab 43%, Xray 11%, MRI 13%, EKG 4% and Treat-Lab 7%. The new arrival rate is as follows:
Time Period
Average Number of patients
Arriving in Time period
0:00 to 4:00
4:00 to 8:00
8:00 to 12:00
12:00 to 16:00
16:00 to 20:00
20:00 to 24:00
Can the system handle these new patients? If not, what is your recommendation (be specific)?
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