The dependency diagram demonstrates thatPrice for Circle (Ps), Price for Stall (Pc) and Days to Show (t) are three primary input variables;any change tothese variables will lead to a change in the demand for each type of ticket, ticket sales and profit. In addition, it has been decided that thevariable cost per personand the fixed cost forboth circle and stallsshould be input variables, in order that the model is suitable for more general use.The diagram demonstrates that variable costsper person will need to be summed daily and deducted from revenue in order to calculate profit for each day.The fixed costs for both circle and stalls will be deducted at the end of the simulation.
The demand for Circle and Stalls can be estimated byPc, Psand days to show using the demand formulae, the model’s key parameter. To ensure that the model can be used for shows in different theatres, the number of seats available at the start (for both the circle and the stalls) willalso need to be designated as an input variable. The number of remaining seats can then be obtained by deducting the number of ticket sales from the number of seatsavailable at the start ofeach day.
It is evident thatappropriate formulae will be required to manage demand and availability. In particular we will need to ensure that that ticket sales cannot exceed the number of seats available on any given day.
依赖图展示了thatprice圆（PS），价格为失速（PC）和天秀（t）是三个主要的输入变量；这些变量的任何变化将导致对每一类门票的需求变化，门票销售和利润。此外，我们已决定变化的成本每人与固定成本两圈，stallsshould作为输入变量，以使模型适用于更一般的使用。该图表明，变costsper人需要总结每日扣除收益来计算每天的固定成本利润。两个圈，摊位将结束时的模拟中扣除。
圆与摊位的需求可以估计燕化公司，要求天表明使用需求的计算公式，该模型的关键参数。确保模型可以用于在不同的剧院表演，在开始的议席数目（两圈和档）也需要被指定为一个输入变量。剩余数量的座位可以扣除机票销售数量从seatsavailable数在开始每一天得到的。
这是明显的合适的公式将需要管理的需求和可用性。特别是我们将需要确保门票销售不能超过任何一天的议席数目。
