Labelle et al. [43] present models and heuristics for partitioning
a city into sectors, with respect to snow disposal operations, and
for assigning the sectors to disposal sites. Even though this paper
is not directly related to SWM, it is worth citing it, because, as
pointed out by the authors, it is similar to the problem encountered
in garbage collection operations. The sector design process
provides a set of sectors, each of which is assigned to a disposal
site. For this purpose, a districting problem needs to be solved first,
to define the boundaries of each sector, and an assignment
problem must be solved later, to associate sectors with disposal
sites. The goal is to minimize the overall cost for performing
operations, made up of operational costs, and fixed costs for
equipment. As a proxy for trucks fixed costs, the number of trucks
required for performing the operations is considered. Given that
the mathematical model may be very hard to solve because of
nonlinearities in the objective function, the authors develop a
heuristic procedure. The overall problem of sector design is
decomposed into two sequential sub-problems. First, they determine
for each disposal site its area of influence; second, they
partition the area of influence for each site into sectors. The
objective of the first phase is to minimize relevant operational
costs; the objective for the second phase is to minimize the
number of trucks for the given zone assignments. These algorithms
are incorporated in a DSS built on a geographical information
system, and tested on the city of Montréal.
Labelle et al. [43] present models and heuristics for partitioninga city into sectors, with respect to snow disposal operations, andfor assigning the sectors to disposal sites. Even though this paperis not directly related to SWM, it is worth citing it, because, aspointed out by the authors, it is similar to the problem encounteredin garbage collection operations. The sector design processprovides a set of sectors, each of which is assigned to a disposalsite. For this purpose, a districting problem needs to be solved first,to define the boundaries of each sector, and an assignmentproblem must be solved later, to associate sectors with disposalsites. The goal is to minimize the overall cost for performingoperations, made up of operational costs, and fixed costs forequipment. As a proxy for trucks fixed costs, the number of trucksrequired for performing the operations is considered. Given thatthe mathematical model may be very hard to solve because ofnonlinearities in the objective function, the authors develop aheuristic procedure. The overall problem of sector design isdecomposed into two sequential sub-problems. First, they determinefor each disposal site its area of influence; second, theypartition the area of influence for each site into sectors. Theobjective of the first phase is to minimize relevant operationalcosts; the objective for the second phase is to minimize thenumber of trucks for the given zone assignments. These algorithmsรวมใน DSS ในการสร้างข้อมูลทางภูมิศาสตร์ระบบ และทดสอบในเมืองมอนทรีออ
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