In this research we address a sequence-dependent group scheduling problem on a set of unrelated-parallel machines where the run time of each job differs on different machines. To benefit both producer and customers we attempt to minimize a linear combination of total weighted completion time and total weighted tardiness. Since...
The problem of scheduling jobs to minimize total weighted tardiness in flowshops,
with the possibility of evolving into hybrid flowshops in the future, is investigated in
this paper. As this research is guided by a real problem in industry, the flowshop
considered has considerable flexibility, which stimulated the development of...
In this paper, we consider a flowshop scheduling problem with sequence-dependent setup times and a bicriteria objective to minimize the work-in-process inventory for the producer and to maximize the customers' service level. The use of a bicriteria objective is motivated by the fact that successful companies in today's environment not...
Cellular Manufacturing Systems (CMS) have provided
significant increase in manufacturing productivity over the
last two decades. This has been achieved because CMS can
overcome the problems due to frequent setups, high in-process
inventories, long throughput times and complex
planning and coordination commonly associated with a batch-type
manufacturing operation. The underlying...
In this research, the comparative performance of permutation and non-permutation schedules is investigated in an assembly flow shop (AFS) with shift production, where a limited buffer storage is available between two machines. Most of the traditional scheduling problems consider continuous production, i.e., production occurs for 24 hours (3 * 8-hour...
Cellular manufacturing, which is also referred to as group technology among researchers, has primarily been used as a means to increase productivity, efficiency and flexibility. Under group technology, similar jobs, which have similar shape, material, and processing operations are assigned to the same group. Moreover, dissimilar machines are assigned to...
Flexible Manufacturing Systems (FMSs) have evolved rapidly over the last decade. One important factor that influences the performance of FMS is scheduling. Scheduling in an FMS differs from that in a conventional job-shop because each operation of a job may be performed by any one of several machines. Most studies...
Significant improvements in manufacturing productivity has resulted from
implementing cellular manufacturing systems (CMSs) in small to medium sized batch-oriented
manufacturing systems. The work reported in this thesis illustrates the effect of
cell locations in dealing with the processes of machine duplication and part
subcontracting under budgetary restrictions. In addition, this...
In this research, a bi-criteria group scheduling problem is investigated in hybrid flow shop (HFS) environments, where the parallel machines in each stage are unrelated, meaning not identical. The objective of the problem is to minimize a linear combination of the total weighted completion times as a means of complying...
This research considers a combinatorial optimization scheduling problem in the assembly of printed circuit boards (PCBs) in electronic manufacturing. For the first time in this research, the preparation process, which is typically called kitting operation, is paid attention to and is performed along with the assembly operation, described in this...