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Dr. Erika Marsillac
Department of Information Technology and Decision Sciences, Old Dominion University, Norfolk, VA 23529, USA

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Journal article
Published: 26 March 2021 in International Journal of Production Economics
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Research on merging lines is expanding as their use grows significantly in the contexts of remanufacturing, reverse logistics and developing economies. This article is the first to study the behavior of unpaced, reliable, and unreliable merging assembly lines that are deliberately unbalanced with respect to their coefficients of variation (CV). Conducting a series of simulation runs with varying line lengths, buffer storage capacities and unbalanced CV patterns delivers intriguing results. For both reliable and unreliable lines, the best pattern for generating higher throughput is found to be a balanced configuration (equal CVs along both parallel lines), except for unreliable lines with a station buffer capacity of six. In that case, the highest throughput results from the descending configuration, i.e. concentrating the variable stations close to the beginning of both parallel lines and the steady stations towards the end of the line. Ordering from the least to most steady station also provides the best average buffer level. By exploring the experimental Pareto Frontier, this study shows the combined performance of unbalanced CV patterns for throughput and average buffer level. Study results suggest that caution should be exercised when assuming equivalent behavior from reliable and unreliable lines, or single serial lines and merging lines, since the relative throughput performance of some CV patterns changed between the different configurations.

ACS Style

Rodrigo Romero-Silva; Sabry Shaaban; Erika Marsillac; Zouhair Laarraf. The impact of unequal processing time variability on reliable and unreliable merging line performance. International Journal of Production Economics 2021, 235, 108108 .

AMA Style

Rodrigo Romero-Silva, Sabry Shaaban, Erika Marsillac, Zouhair Laarraf. The impact of unequal processing time variability on reliable and unreliable merging line performance. International Journal of Production Economics. 2021; 235 ():108108.

Chicago/Turabian Style

Rodrigo Romero-Silva; Sabry Shaaban; Erika Marsillac; Zouhair Laarraf. 2021. "The impact of unequal processing time variability on reliable and unreliable merging line performance." International Journal of Production Economics 235, no. : 108108.

Articles
Published: 01 January 2020 in Pesquisa Operacional
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Previous studies have shown that the mean queue length of a GI/G/1 system is significantly influenced by the skewness of inter-arrival times, but not by the skewness of service times. These results are limited because all the distributions considered in previous studies were positively skewed. To address this limitation, this paper investigates the effects of the skewness of inter-arrival and service times on the probability distribution of waiting times, when a negatively skewed distribution is used to model inter-arrival and service times. Subsequent to a series of experiments on a GI/G/1 queue using discrete-event simulation, results have shown that the lowest mean waiting time and the lowest variance of waiting times can be attained with a combination of positive inter-arrival skewness and negative service skewness. Results also show an interesting effect of the skewness of service times in the probability of no-delay in environments with a higher utilization factor.

ACS Style

Rodrigo Romero-Silva; Sabry Shaaban; Erika Marsillac; Margarita Hurtado-Hernandez. STUDYING THE EFFECTS OF THE SKEWNESS OF INTER-ARRIVAL AND SERVICE TIMES ON THE PROBABILITY DISTRIBUTION OF WAITING TIMES. Pesquisa Operacional 2020, 40, 1 .

AMA Style

Rodrigo Romero-Silva, Sabry Shaaban, Erika Marsillac, Margarita Hurtado-Hernandez. STUDYING THE EFFECTS OF THE SKEWNESS OF INTER-ARRIVAL AND SERVICE TIMES ON THE PROBABILITY DISTRIBUTION OF WAITING TIMES. Pesquisa Operacional. 2020; 40 ():1.

Chicago/Turabian Style

Rodrigo Romero-Silva; Sabry Shaaban; Erika Marsillac; Margarita Hurtado-Hernandez. 2020. "STUDYING THE EFFECTS OF THE SKEWNESS OF INTER-ARRIVAL AND SERVICE TIMES ON THE PROBABILITY DISTRIBUTION OF WAITING TIMES." Pesquisa Operacional 40, no. : 1.

Journal article
Published: 15 June 2019 in Computers & Industrial Engineering
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A critical performance measure in serial production lines is the variability of inter-departure times of a single-server queue. Increasing upstream inter-departure time variability generates greater downstream variability, diminishing overall line performance. Theory suggests that the variability of inter-departure times of a single-server queue is reduced by decreasing the variance of inter-arrival and service times. This study investigates the effects of the skewness of inter-arrival and service times’ distributions on the variability of inter-departure times. Contrary to previous results suggesting that mean waiting times of a GI/G/1 queue can be reduced by increasing the skewness of inter-arrival times, this experimental study of a GI/G/1 queueing system with triangular inter-arrival and service times shows that the coefficient of variation of inter-departure times is reduced through a combination of negative skewness of inter-arrival times and positive skewness of service times. These results also suggest that the absolute value of the negative autocorrelation between consecutive departures is reduced by the same combination of negative skewness of inter-arrival times and positive skewness of service times for low values of server’s utilization, while positive skewness for both inter-arrival and service times reduces this value for high values of server’s utilization. Finally, it was found that queue capacity constraints increase the coefficient of variation of inter-departure times, as has been previously suggested, as well as the skewness and the absolute correlation values of the inter-departure times distribution.

ACS Style

Rodrigo Romero-Silva; Erika Marsillac; Sabry Shaaban; Margarita Hurtado-Hernández. Reducing the variability of inter-departure times of a single-server queueing system – The effects of skewness. Computers & Industrial Engineering 2019, 135, 500 -517.

AMA Style

Rodrigo Romero-Silva, Erika Marsillac, Sabry Shaaban, Margarita Hurtado-Hernández. Reducing the variability of inter-departure times of a single-server queueing system – The effects of skewness. Computers & Industrial Engineering. 2019; 135 ():500-517.

Chicago/Turabian Style

Rodrigo Romero-Silva; Erika Marsillac; Sabry Shaaban; Margarita Hurtado-Hernández. 2019. "Reducing the variability of inter-departure times of a single-server queueing system – The effects of skewness." Computers & Industrial Engineering 135, no. : 500-517.

Journal article
Published: 01 January 2019 in Journal of Manufacturing Systems
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Many Queueing Theory and Production Management studies have investigated specific effects of variability on the performance of serial lines since variability has a significant impact on performance. To date, there has been no single summary source of the most relevant research results concerned with variability, particularly as they relate to the need to better understand the ‘Law of Variability’. This paper fills this gap and provides readers the foundational knowledge needed to develop intuition and insights on the complexities of stochastic simple serial lines, and serves as a guide to better understand and manage the effects of variability and design factors related to improving serial production line performance, i.e. throughput, inter-departure time and flow time, under random variation.

ACS Style

Rodrigo Romero-Silva; Erika Marsillac; Sabry Shaaban; Margarita Hurtado-Hernández. Serial production line performance under random variation: Dealing with the ‘Law of Variability’. Journal of Manufacturing Systems 2019, 50, 278 -289.

AMA Style

Rodrigo Romero-Silva, Erika Marsillac, Sabry Shaaban, Margarita Hurtado-Hernández. Serial production line performance under random variation: Dealing with the ‘Law of Variability’. Journal of Manufacturing Systems. 2019; 50 ():278-289.

Chicago/Turabian Style

Rodrigo Romero-Silva; Erika Marsillac; Sabry Shaaban; Margarita Hurtado-Hernández. 2019. "Serial production line performance under random variation: Dealing with the ‘Law of Variability’." Journal of Manufacturing Systems 50, no. : 278-289.

Journal article
Published: 13 December 2018 in International Journal of Production Research
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ACS Style

Rodrigo Romero-Silva; Erika Marsillac. Trends and topics in IJPR from 1961 to 2017: a statistical history. International Journal of Production Research 2018, 57, 4692 -4718.

AMA Style

Rodrigo Romero-Silva, Erika Marsillac. Trends and topics in IJPR from 1961 to 2017: a statistical history. International Journal of Production Research. 2018; 57 (15-16):4692-4718.

Chicago/Turabian Style

Rodrigo Romero-Silva; Erika Marsillac. 2018. "Trends and topics in IJPR from 1961 to 2017: a statistical history." International Journal of Production Research 57, no. 15-16: 4692-4718.

Journal article
Published: 26 November 2018 in Computers & Industrial Engineering
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Wind is one of the most promising sources of alternative, renewable energy, particularly for developing economies. Wind turbines have been routinely used for electrical power generation since the late 19th century, but growing concerns over the price and environmental impacts of fossil fuels have spurred rapid industry growth. In addition, renewable energy resources are of keen, contemporary interest due to rising global energy demands. To contribute to the body of knowledge on optimizing wind energy production, this paper introduces a comprehensive, iterative methodology for selecting, matching, laying out and installing the most suitable wind turbine system for low wind speed regions, with the objective of generating improved annual energy power. The methodology is useful for the strategic planning and implementation of wind power stations. Iraq was selected as a case study example of implementation in a low wind speed country with vast open flat terrain.

ACS Style

Abdul Salam Darwish; Sabry Shaaban; Erika Marsillac; Nazar Muneam Mahmood. A methodology for improving wind energy production in low wind speed regions, with a case study application in Iraq. Computers & Industrial Engineering 2018, 127, 89 -102.

AMA Style

Abdul Salam Darwish, Sabry Shaaban, Erika Marsillac, Nazar Muneam Mahmood. A methodology for improving wind energy production in low wind speed regions, with a case study application in Iraq. Computers & Industrial Engineering. 2018; 127 ():89-102.

Chicago/Turabian Style

Abdul Salam Darwish; Sabry Shaaban; Erika Marsillac; Nazar Muneam Mahmood. 2018. "A methodology for improving wind energy production in low wind speed regions, with a case study application in Iraq." Computers & Industrial Engineering 127, no. : 89-102.

Journal article
Published: 01 February 2018 in International Journal of Production Economics
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ACS Style

Rodrigo Romero-Silva; Sabry Shaaban; Erika Marsillac; Margarita Hurtado. Exploiting the characteristics of serial queues to reduce the mean and variance of flow time using combined priority rules. International Journal of Production Economics 2018, 196, 211 -225.

AMA Style

Rodrigo Romero-Silva, Sabry Shaaban, Erika Marsillac, Margarita Hurtado. Exploiting the characteristics of serial queues to reduce the mean and variance of flow time using combined priority rules. International Journal of Production Economics. 2018; 196 ():211-225.

Chicago/Turabian Style

Rodrigo Romero-Silva; Sabry Shaaban; Erika Marsillac; Margarita Hurtado. 2018. "Exploiting the characteristics of serial queues to reduce the mean and variance of flow time using combined priority rules." International Journal of Production Economics 196, no. : 211-225.

Original articles
Published: 17 October 2016 in International Journal of Production Research
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Accurately evaluating strategic commitments to remanufacturing requires a comprehensive understanding and consideration of the simultaneous effect of uncertainty on supply and demand. This paper presents a model that supports improved remanufacturing decision-making under stochastic demand and supply components and various cost factor considerations. The model is formulated as a newsvendor model extension that considers the simultaneous effects of probabilistic supply and demand. This characterisation assesses the effects of critical operational constraints on several strategic performance measures including cost, revenue and profit. The paper employs a Monte Carlo approach to assess the performance and extent of engagement in strategic remanufacturing supply chain operations, and illustrates results via a case study application. Results indicate that the technique can assist decision-makers in strategically determining the potential of future engagements in remanufacturing activities, and extends research findings by theoretically examining strategic decision-making for remanufacturing activity.

ACS Style

Rafael Diaz; Erika Marsillac. Evaluating strategic remanufacturing supply chain decisions. International Journal of Production Research 2016, 55, 2522 -2539.

AMA Style

Rafael Diaz, Erika Marsillac. Evaluating strategic remanufacturing supply chain decisions. International Journal of Production Research. 2016; 55 (9):2522-2539.

Chicago/Turabian Style

Rafael Diaz; Erika Marsillac. 2016. "Evaluating strategic remanufacturing supply chain decisions." International Journal of Production Research 55, no. 9: 2522-2539.

Journal article
Published: 05 February 2015 in International Journal of Production Research
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ACS Style

Ying Liao; Erika Marsillac. External knowledge acquisition and innovation: the role of supply chain network-oriented flexibility and organisational awareness. International Journal of Production Research 2015, 53, 5437 -5455.

AMA Style

Ying Liao, Erika Marsillac. External knowledge acquisition and innovation: the role of supply chain network-oriented flexibility and organisational awareness. International Journal of Production Research. 2015; 53 (18):5437-5455.

Chicago/Turabian Style

Ying Liao; Erika Marsillac. 2015. "External knowledge acquisition and innovation: the role of supply chain network-oriented flexibility and organisational awareness." International Journal of Production Research 53, no. 18: 5437-5455.

Journal article
Published: 01 September 2014 in Transportation Research Part E: Logistics and Transportation Review
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ACS Style

Wayne K. Talley; ManWo Ng; Erika Marsillac. Port service chains and port performance evaluation. Transportation Research Part E: Logistics and Transportation Review 2014, 69, 236 -247.

AMA Style

Wayne K. Talley, ManWo Ng, Erika Marsillac. Port service chains and port performance evaluation. Transportation Research Part E: Logistics and Transportation Review. 2014; 69 ():236-247.

Chicago/Turabian Style

Wayne K. Talley; ManWo Ng; Erika Marsillac. 2014. "Port service chains and port performance evaluation." Transportation Research Part E: Logistics and Transportation Review 69, no. : 236-247.

Journal article
Published: 01 January 2014 in International Journal of Production Economics
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ACS Style

Erika Marsillac; James Jungbae Roh. Connecting product design, process and supply chain decisions to strengthen global supply chain capabilities. International Journal of Production Economics 2014, 147, 317 -329.

AMA Style

Erika Marsillac, James Jungbae Roh. Connecting product design, process and supply chain decisions to strengthen global supply chain capabilities. International Journal of Production Economics. 2014; 147 ():317-329.

Chicago/Turabian Style

Erika Marsillac; James Jungbae Roh. 2014. "Connecting product design, process and supply chain decisions to strengthen global supply chain capabilities." International Journal of Production Economics 147, no. : 317-329.

Journal article
Published: 24 January 2013 in International Journal of Production Economics
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China is one of the largest and most rapidly growing automotive markets in the world. In such a dynamic environment, mass customization (MC) is considered crucial to developing and maintaining the competitiveness of automotive suppliers. Literature has suggested that the MC capability of a firm can be achieved by systematically (1) coordinating suppliers, (2) implementing modularity-based manufacturing practices, and (3) postponing key production steps that determine specialized product features and performance. However, since research has also indicated that the Chinese manufacturing context differs substantially from others around the world; it is unclear if these same MC practices are as applicable for Chinese automotive suppliers. This study applies social dilemma and resource dependency theories to explore MC capabilities in Chinese automotive suppliers, and determines that some, but not all, MC practices are pertinent in the Chinese market. The practices which were found to be significant were: tactical alignment increases product and process modularity design; and product modularity design, process modularity design, and supplier segmentation can directly or indirectly increase mass customization capabilities. Relationships between tactical alignment and postponement practices and between postponement practices and mass customization capabilities were not found to be statistically significant in the Chinese context. These novel MC results are valuable since they can help guide automotive manufacturers and suppliers in their expansion into and throughout the Chinese market.

ACS Style

Kun Liao; Xiaodong Deng; Erika Marsillac. Factors that influence Chinese automotive suppliers’ mass customization capabilities. International Journal of Production Economics 2013, 146, 25 -36.

AMA Style

Kun Liao, Xiaodong Deng, Erika Marsillac. Factors that influence Chinese automotive suppliers’ mass customization capabilities. International Journal of Production Economics. 2013; 146 (1):25-36.

Chicago/Turabian Style

Kun Liao; Xiaodong Deng; Erika Marsillac. 2013. "Factors that influence Chinese automotive suppliers’ mass customization capabilities." International Journal of Production Economics 146, no. 1: 25-36.

Journal article
Published: 01 January 2012 in International Journal of Technology, Policy and Management
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The Photovoltaic (PV) Supply Chain (SC) has been infrequently examined in SC literature. The PVSC is unique in that it is heavily driven by government policy and dependent on subsidies, sensitive to inventory fluctuations, raw material shortages, and geo-political tensions, and does not fit into traditional SC models. These unique characteristics suggest it deserves more in-depth analysis. This paper describes and examines the PVSC, building a framework for improved management. Critical PVSC components are compared and contrasted with traditional SC typologies, so that research gaps and common PVSC problems are identified. Concluding suggestions for improved PVSC management are then presented.

ACS Style

Erika Marsillac. Management of the Photovoltaic Supply Chain. International Journal of Technology, Policy and Management 2012, 12, 195 .

AMA Style

Erika Marsillac. Management of the Photovoltaic Supply Chain. International Journal of Technology, Policy and Management. 2012; 12 (2/3):195.

Chicago/Turabian Style

Erika Marsillac. 2012. "Management of the Photovoltaic Supply Chain." International Journal of Technology, Policy and Management 12, no. 2/3: 195.

Case report
Published: 08 February 2011 in Journal of Manufacturing Technology Management
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Purpose – The purpose of this paper is to understand and describe the conditions that compel and underscore global supply chain (SC) adaptations.Design/methodology/approach – Insights from contingency theory, Porter's economic cluster theory and international factory mapping are used to analyze the SC adaptations that follow when an automotive firm moves from a domestic to a global SC.Findings – An automotive global SC adaptation includes market entry considerations, the establishment of a three‐stage flexible time‐ and production‐based supplier network plan, and the integration of logistics partners.Research limitations/implications – SC adaptations are an important consideration for any manufacturing expansion effort, especially international ones. Varying production levels impact supplier relationships and decisions and may result in varied supplier perspectives. Government regulations influence entry and routine decisions, while logistics issues and costs play an integral role in supplier perceptions and reactions.Practical implications – With the rapid expansion of the Chinese auto market, entering manufacturing firms need more information about how to strategically locate, and develop and support supplier networks. A stepped supplier network establishment approach optimizes benefits for both manufacturing firm and suppliers. Evaluating and integrating logistics issues also sets the stage for future expansion efforts at optimal cost and supplier support.Originality/value – The internationalization of the automotive SC involves adaptations that can only be successful through advance planning, strategic supplier networking, and systematic logistics integration.

ACS Style

Kun Liao; Erika Marsillac; Eldon Johnson; Ying Liao. Global supply chain adaptations to improve financial performance. Journal of Manufacturing Technology Management 2011, 22, 204 -222.

AMA Style

Kun Liao, Erika Marsillac, Eldon Johnson, Ying Liao. Global supply chain adaptations to improve financial performance. Journal of Manufacturing Technology Management. 2011; 22 (2):204-222.

Chicago/Turabian Style

Kun Liao; Erika Marsillac; Eldon Johnson; Ying Liao. 2011. "Global supply chain adaptations to improve financial performance." Journal of Manufacturing Technology Management 22, no. 2: 204-222.

Journal article
Published: 12 September 2010 in Journal of Manufacturing Technology Management
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The role of modularity and integration in enhancing manufacturing performance: An absorptive capacity perspective

ACS Style

Kun Liao; Qiang Tu; Erika Marsillac. The role of modularity and integration in enhancing manufacturing performance. Journal of Manufacturing Technology Management 2010, 21, 818 -838.

AMA Style

Kun Liao, Qiang Tu, Erika Marsillac. The role of modularity and integration in enhancing manufacturing performance. Journal of Manufacturing Technology Management. 2010; 21 (7):818-838.

Chicago/Turabian Style

Kun Liao; Qiang Tu; Erika Marsillac. 2010. "The role of modularity and integration in enhancing manufacturing performance." Journal of Manufacturing Technology Management 21, no. 7: 818-838.

Journal article
Published: 01 January 2008 in International Journal of Logistics Systems and Management
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Environmental and economic issues have significant impacts on reverse logistics and are thought to form one of the developmental cornerstones of green supply chains. Global competition requires firms to minimise their use of extraneous resources and develop sustainable supply chain practices. Recent, although limited, research has begun to identify that these sustainable supply chain practices, which include the reverse logistics factors, lead to more integrated supply chains, which ultimately can lead to improved economic performance. Therefore, value may be expected in determining (1) if any overlaps or intersections between the green supply chains and reverse logistics exist and (2) if so, if they can be integrated to provide a more comprehensive, sustainable system. This conceptual paper will explore the potential relationships between the green supply chains and the reverse logistics, specifically focusing on shared commonalities. A conceptual model, describing these relationships, will be presented for future empirical research.

ACS Style

Erika Marsillac. Environmental impacts on reverse logistics and green supply chains: similarities and integration. International Journal of Logistics Systems and Management 2008, 4, 411 .

AMA Style

Erika Marsillac. Environmental impacts on reverse logistics and green supply chains: similarities and integration. International Journal of Logistics Systems and Management. 2008; 4 (4):411.

Chicago/Turabian Style

Erika Marsillac. 2008. "Environmental impacts on reverse logistics and green supply chains: similarities and integration." International Journal of Logistics Systems and Management 4, no. 4: 411.