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Control charts are the most popular Statistical Process Control (SPC) tools used to monitor process changes. When a control chart indicates an out of control signal it means that the process has changed. However control chart signals do not indicate the real time of process changes, which is essential for identifying and removing assignable causes and(More)
During the past few years, many people have been interested in integrated production and marketing planning strategies where demand and cost functions, both, depend on different parameters such as price and marketing expenditure. The primary concern on all previous models is the difficulty on estimating the model parameters such price and marketing(More)
The inconsistency of judgments in the fuzzy Analytic Hierarchy Process (AHP) is a crucial issue. To make the appropriate decision, the inconsistency in decision maker's (DM) judgments needs to be eliminated or reduced. This paper proposes two mathematical models to deal with inconsistency in Fuzzy AHP. In the first model, the DM's judgments are modified(More)
The location-routing problem (LRP) is established as a new research area in the context of location analysis, which deals simultaneously with two problems of locating the facilities and designing the travel routes for vehicles among established facilities and existing demand points. In this paper, the location-routing problem with fuzzy demands (LRPFD) is(More)