Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"production lead time"”.
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Production lead time reduction in a semiconductor capital equipment manufacturing plant through optimized testing protocols
… were studied with the goal to reduce the production lead time. Based on the principles of lean manufacturing, DMAIC methodology was used to guide the process. Value Stream Mapping (VSM) of the whole process was done to determine that the Universal End Station (UES) was the module with the …
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Optimal sublot determination in multiple batch stage, two stage production systems
One of the main objectives in the operation of production systems these days is to reduce production lead time. A reduction in production lead time directly translates into decrement in production cost thereby making the products competitive. One way to achieve this objective is to overlap …
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Evaluation of postponement in the Drug Product supply chain
… Amgen, which is characterized by highly variable production lead times. The motivation for the use of postponement in the DP supply chain is to reduce the lead time and improve the service level from the manufacturing site to the distribution centers (DCs). Amgen is undergoing a rapid global …
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Model for inventory management in valve manufacturing cell at Waters Corporation
… addresses the challenges of improving the on-time delivery performance of a high-volume critical part type in a high-product-mix manufacturing facility of valves. Preliminary analysis on the push-type production system of the valve manufacturing cell shows that long production lead time caused …
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Optimizing the economic efficiency by micro-drill life improvement during deep-hole drilling in the 212-Valve manufacturing process
The micro-drilling process by robodrills in the production of valves at Waters Corporation is the bottleneck caused by the short drill life. This thesis analyzed the chip formation and removal during the process to improve the tool life. The effects of the tool materials, geometry and peck drilling …
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Inventory control through a CONWIP pull production system
Production systems such as the CONWIP (constant work-in-process) pull production system have been widely studied by researchers to date. The CONWIP pull production system is an alternative to pure push and pure pull systems that lowers and controls inventory levels and reduces production lead time. …
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Inventory management strategy for the supply chain of a medical device company
… meet their customers' urgent requirements, sometimes leading to excessive inventory. This problem is compounded when it involves a long supply chain with several stages of activities and with long delivery and processing lead times. It is further exacerbated when high inventory leads to the …
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Modeling, Analysis,and Design of Responsive Manufacturing Systems Using Classical Control Theory
… changes of product designs need quicker response times in ramp-up to volume. To stay competitive in this 21st century global industrialization, companies must posses a new operation design strategy for responsive manufacturing systems that react to unpredictable market changes as well as to launch …
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Solving the Facility Layout Problem Using Genetic and Progressive Algorithms
… inventory build-up and consequently improves the production lead time and operation cost. Therefore, this thesis explores two variations of the facility layout problem: the Equal Areas dynamic facility layout problem (EA-DFLP) and the unequal area facility layout problem (UA-FLP). The EA-DFLP …
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Adaptive Scheduling and Tool Flow Control in Automated Manufacturing Systems
… products due to mass customization, short production lead-time, and unstable customer demand. Today, the need for flexibility, quick responsiveness, and robustness to system uncertainties in production scheduling decisions has increased significantly. In traditional job shops, tooling is …
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Optimization-based auctions and stochastic assembly replenishment policies for industrial procurement
… delays typically account for most of the total production lead-time, and have a major impact on inventory costs. However, in an increasingly global outsourcing environment, these delays can be both long and uncertain. This leads us to examine the problem of optimally procuring components in a …