INDE 3370 Individual Lab Assignment #2
Due 18 OCT 07
The objective of this assignment is to further develop your model building with ARENA. All
work is to be completed individually.
Modify lab 1 to include the addition of one parallel queue and a customer cart system as
specified in this assignment.
Model and animate a two parallel queue server system which represents a customer service
center. The center operates for 12 hours a day from 9 am to 9 pm.
Customers arrive in the system exponentially distributed with a mean of 2 minutes. There is
nobody waiting outside when the system opens (means the first arrival is also exponentially
distributed with a mean of 2 minutes from the opening time). It takes 30 seconds to walk from
the front door to the queue. The service time for both clerks is normally distributed with a mean
of 5 minutes and a standard deviation of 1 minute. Once the customer is done with placing their
order, they then load their order on to one of three carts if available. The customers then wheel
their carts back to the entrance 100 feet away at the rate of 60 feet per minute. Once the
customers reach the entrance, they leave the cart and depart. Carts are automatically returned
when needed by the customers.
Model the above system using proper model translation practices. Keep your program organized
and use hot keys for the model, experiment, and animation sections of your program.
Remember to use pickq for your parallel queues, a storage to represent customers who have been
assigned a cart that has not yet arrived, and parking to illustrate the position of unused carts.
Collect statistics on the time average number in queue, the average system time, and the average
utilization rate for one replication. Include a clock, a display that shows the time average
number in queue, a level for average utilization, and a plot for the average system time.
Submit a one page executive summary outlining the statistical results of the one replication,
screen captures of your model, experiment, and animation and your model and experiment
source code (look under the ARENA menu system to do this), and a copy of the summary
statistics output text file. Use a pressboard prong binder with a label on the outside with your
name, course number, homework assignment number, and due date. Inside also include a cover
sheet with your name, course name, assignment number, and due date.