Page 271 - Mechatronics for Safety, Security and Dependability in a New Era

Ch51-I044963.fm Page 255 Thursday, July 27, 2006 8:10 AM
Thursday, July 27, 2006
Page 255
Ch51-I044963.fm
8:10AM
255
255
tnai n rep<S_: mai n rep
andalso tdis=-;5_tdisp andalso
rentexp+fnst+tmairrep+tdispcTOTAI

Figure 1: Flow model of producing-consuming System Figure 2: Scope model of rental service

3. SCOPE MODEL OF THE CONSUMER ELECTRONICS RENTAL SERVICE

In this paper, because we are interested in the sub service bout "leasing", we will pay more attention to
the activity caused by Lease companyl to Consumer. The sub page corresponding to substitution
transition t3 gives the scope model about it, just depicted as Figure 2. In this activity, Lease companyl
will provide the consumers with electronics rental service. The consumers will evaluate the service
with 4 RSPs: Rental Expenses, Installation Trouble, Maintenance and Repair Trouble, and Disposal
Trouble. So we define 4 places to represent these 4 RSPs respectively. They all are typed as INT,
indicating that the color value is integer representing the satisfaction degree corresponding to each
RSP. Transition t35 represents the event that the rental service is provided. We give an evaluating
criterion on which the consumer judges this service by a transition guard. By using RSPs, the scope
model can describe not only whether the consumer can receive the material contents but also whether
the consumer is satisfied with the service contents.

4. VIEW MODELS OF THE CONSUMER ELECTRONICS RENTAL SERVICE

In the scope model, we don't consider how lease companyl will manage the rental service, neither
how the service management will influence these 4 RSPs. We will describe the details by the view
models realized by the relevant sub pages corresponding to the substitution transitions t31, t32, t33, t34
of the scope model respectively. These 4 RSPs are influenced by many aspects respectively. In the
view models we will represent these aspects using places which all are typed as INT.

The evaluation about Rental Expenses is described by the view model corresponding to the sub page of
the substitution transitions t31 of the scope model, just depicted as Figure 3. The evaluation about
Installation Trouble is described by the view model corresponding to the sub page of the substitution
transitions t32 of the scope model, just depicted as Figure 4. The evaluation about Maintenance and
Repair Trouble is more complicated, and is described by the view model corresponding to the sub page
of the substitution transitions t33 of the scope model, just depicted as Figure 5. The evaluation about
Disposal Trouble is described by the view model corresponding to the sub page of the substitution
transitions t34 of the scope model, just depicted as Figure 6.