Managing Variations in Process Control: An Overview of Sources and Degradation Methods

Mrugalska, Beata; Ahram, Tareq Z.

doi:10.1007/978-3-319-41685-4_34

Cited by 6 publications

(2 citation statements)

References 17 publications

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“…Variasi dapat dibagi menjadi 2 tipe, yaitu dan variasi tidak terkendali dan variasi terkendali. Variasi terkendali (controllable variation) adalah variasi yang dapat dikendalikan atau variasi yang dapat dihilangkan atau diminimalisir jika dilakukan aktifitas perbaikan (Mrugalska & Ahram, 2017). Variasi jenis ini biasanya bersifat stabil, konsisten, kemungkinannya random, terprediksi, terjadi secara alamiah, inheren, sebab-sebab acak.…”

Section: Peta Kendali Kadar Protein Susu Uht Stroberiunclassified

Statistical Quality Control of Ultra High Temperature (UHT) Milk in PT XYZ

Sitorus

Mela

2022

ijft

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Ultra high temperature (UHT) milk is a product that is widely consumed because of its practicality and hygiene. PT XYZ is one of the industries that produces UHT milk with chocolate and strawberry flavors. Based on company records, there are variations in the protein content of the two products. The purpose of this study was to determine the average protein content of chocolate and strawberry milk on the control chart and to develop a cause-and-effect diagram to determine the factors that triggered variation in protein levels in PT XYZ's chocolate milk and strawberry milk. The research data was obtained from company records, which were then analyzed using MR control charts and fishbone diagrams. The results showed that there were values that were outside the control limits, both in the chocolate and strawberry flavor variants. The cause of the variability in the value of protein content in UHT milk in both chocolate and strawberry flavors comes from 4 factors. The machine factor is in the form of machine checking, which is still curative. The human factor is a lack of human resources and the absence of regular employee training. The factor of the method of using materials that are still manual Material factors are in the form of non-uniformity of sources and quality of raw materials for fresh milk from suppliers, and differences in quality and type of raw materials (between fresh milk and recombined milk).

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Section: Peta Kendali Kadar Protein Susu Uht Stroberiunclassified

Statistical Quality Control of Ultra High Temperature (UHT) Milk in PT XYZ

Sitorus

Mela

2022

ijft

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“…Process variations are inevitable in production systems. Process variability, which may occur due to many internal factors such as the equipment and materials used, methods applied, operational causes, or external factors, can create variability in the process cycle time (Mrugalska and Ahram, 2017). The high increase in cycle time has significant adverse effects on production performance, traceable in metrics such as productivity and on-time delivery rate.…”

Section: Introductionmentioning

confidence: 99%

Prediction of High Cycle Times in Wheel Rim Molding With Artificial Neural Networks

Kabasakal

Keskin

2022

Verimlilik Dergisi

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This study proposes a two-stage approach to determine a cycle-time threshold and predict high cycle times by examining sample molding process data obtained from a wheel-rim manufacturer. Methodology: Our study firstly determines thresholds for high cycle times with two alternate approaches. Subsequently, data were labeled regarding the cycle-time threshold. Alternate models based on Artificial Neural Networks (ANNs) were developed in R to predict high cycle times. Findings: Our findings include a comparison of cycle-time threshold approaches through a distance-based metric. After labeling of high cycle times, our study presents the performance of alternate predictive models. The performance of models was compared in terms of accuracy, recall and precision. Originality: Process mining in wheel rim molding has been found meager in prior research, despite the abundance of process mining applications and cycle-time prediction models. Another distinctive aspect of the study is cycle-time threshold determination with multiple methods to eliminate manual labeling of processes.

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Transforming Lean to Service: Application to the Kurdistan Banking Industry

Haidar

2023

Perspectives on Development in the Middle East and North Africa (MENA) Region

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Managing Variations in Process Control: An Overview of Sources and Degradation Methods

Cited by 6 publications

References 17 publications

Statistical Quality Control of Ultra High Temperature (UHT) Milk in PT XYZ

Statistical Quality Control of Ultra High Temperature (UHT) Milk in PT XYZ

Prediction of High Cycle Times in Wheel Rim Molding With Artificial Neural Networks

Transforming Lean to Service: Application to the Kurdistan Banking Industry

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