In order the created model to work in a real world situation we need to make assumptions. Firstly we assume that the average number of guests arriving is staying constant at 100 every day, which

Assumptions

In order the created model to work in a real world situation we need to make assumptions. Firstly we assume that the average number of guests arriving is staying constant at 100 every day, which means the demand for the hotel is not changing during the year. Otherwise, if the average number of guests will go up or down we will have either not enough staff to satisfy the customers or the surplus of stuff will give an extra unnecessary cost respectively to the change.

Secondly we have to assume that there are no staff attendance disruptions, i.e. if one service clerk got ill he immediately reports to the manager so the replacement for him could be found in time for the new working day. By assuming that we make sure that every working day we will have the required five competent clerks at the check-in desks ready to provide a service.

We also have to assume that our costs remain constant, such as stuff will not ask for a pay rise, the ATM in the Proposal 4 will not require a replacement or any other capital investments. If the changes occur that will mean that we can not predict our future costs for the proposals as the there will be no certainty with costs of service provision.

In Proposals 1 and 2 we have to assume that for non-corporate guests the queuing system is M/M/1, so each clerk has got an individual line awaiting his service. In Proposal 2 as it says that two clerks serve the corporate guests, but they all stand in a joint queue we assume that the M/M/S system supposed to be used. Proposal 3 offers a formation of a single queue so the “first in first out” (FIFO) principle is assumed as it assumes that everyone in the queue receive a service according to the line with no priority check-ins and with no queue cutting.

In the Proposal 4 we assume that two ATMs has been bought and installed by the manager as only one machine will not satisfy the customers as their waiting time will be too high. However, by assuming that manager has decided to buy two ATMs that will give us a realistic waiting time compared to unrealistic figure if we use only one machine.

Дата добавления: 2015-11-04