RETRACTED: The Optimal Decision Combination in Semiconductor Manufacturing

Abstract

Wafer fabrication is a capital-intensive and highly complex manufacturing process. In a wafer fabrication facility (fab), wafers are grouped as a lot to go through repeated sequences of operations to build circuitry. Lot scheduling is an important task for manufacturers in order to improve production efficiency and satisfy customers' demands of on-time delivery. Cycle time and average work-in-process reduction while meeting customers' requirements play an important role in improving the competitiveness and sustainability of a semiconductor manufacturer. In this research, we propose the optimal combination rules for lot scheduling problems in wafer fabs, focusing on three complex areas of decision making: lot release control, batch sizing, and dispatching lots to enhance competitiveness and sustainability of a semiconductor facility.

RETRACTED: Yoon et al. The Optimal Decision Combination in Semiconductor Manufacturing. Sustainability 2017, 9, 1788

“…The Sustainability Editorial Office has been made aware that the published paper [1] has a significant overlap with a previously written, yet unpublished, technical report. The overlap included a number of identical figures and tables, as well as the analysis of the samples, and the previous manuscript had a different authorship to [1]. Therefore, the Sustainability Editorial Office has taken the decision to retract [1] in order to preserve academic integrity.…”

“…The overlap included a number of identical figures and tables, as well as the analysis of the samples, and the previous manuscript had a different authorship to [1]. Therefore, the Sustainability Editorial Office has taken the decision to retract [1] in order to preserve academic integrity. We apologize to the readers of Sustainability and to the authors of the previous work.…”

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“…MDPI is a member of the Committee on Publication Ethics and takes the responsibility to enforce strict ethical policies and standards very seriously. To ensure the addition of only high quality scientific works to the field of scholarly publication, [1] is retracted and shall be marked accordingly.…”

Learning to Dispatch Operations with Intentional Delay for Re-Entrant Multiple-Chip Product Assembly Lines

“…Keeping the resource utilization level high is achievable by simply providing a sufficient large amount of work-in-process (WIP). In the meantime, to achieve economic sustainability of MCP assembly lines, lean principles known as the enhancement of productivity by eliminating waste are necessary to be realized [7][8][9]. One of the lean principles is to reduce the amount of WIP, which leads to a reduction in inventory cost and a decrease in the flow time of lots [10].…”