Simulation and modeling - Old Questions

a. Cafeteria

    Entities:  customer, cashier, waiter

    Attributes: hungry, hurried

     Activities: take orders, collect payments, dispatch orders

    Events: arrival and departure of customer, lack of raw material, faults in the equipment

    State variables: number of occupied tables, number of orders per table, number of customers waiting for attention

b. Inventory

    Entities:  Warehouse

    Attributes:Capacity

   Activities:  Withdrawing

    Events: Demand

    State variables: Levels of inventory, background

c. Banking

    Entities: Customers

    Attributes: Checking-account balance

    Activities:  Making deposits

    Events: Arrival, departure

    State variables: Number of busy tellers, number of customer waiting

d. A hospital emergency room

     Entities:  doctor, nurse, patient, equipment

    Attributes:safe, expert in his/her science, intelligent, responsible

    Activities:  vaccinate, feed the patient, administering medicines, heal the wounds

    Events: lack of medicines, lack of staff, lack of beds, arrival and departure of patients.

    State variables: number of patients, amount of administrated medicines, number of empty beds, number of registerd cases.

e. Communication

    Entities: Messages

    Attributes: Length, destination

    Activities: Transmitting

    Events: Arrival at destination

    State variables: Number waiting to be transmitted