Cathal Heavey - Academia.edu (original) (raw)
Papers by Cathal Heavey
International Journal of Computer Integrated Manufacturing, Nov 1, 2012
In this study, a wet bench cluster is examined through a highly detailed simulation model to firs... more In this study, a wet bench cluster is examined through a highly detailed simulation model to first understand the tool performance under different process mixes and lot arrival patterns and second to improve the tool performance using different recipe sequences and loading policies. Results of the simulation experiments show that there is benefit in rationalising the number of recipes to
International Journal of Production Research, 2016
This paper develops and tests a novel extension to traditional supplier selection practice, with ... more This paper develops and tests a novel extension to traditional supplier selection practice, with a particular focus on the concluding stages of a manufacturing based field service. Action based research was used to design and develop a discrete event simulation (DES) decision support for a large multinational manufacturing organisation with a significant after sales service supply chain. The framework has been designed to identify and validate the value attributable to collaborative supplier contracting with built in costed performance improvement targets. Use of the framework in the case organization was found to produce greater cost savings over traditional practice, facilitating extended supply chain contracts. The results provide evidence of the high level of savings achievable whilst also improving customer delivery through targeted service improvements over the contracts life cycle. This framework advances beyond the prevalent practice of cost focused short term adversarial supply contracting and is innovative in terms of its continuous improvement simulation based framework design.
International Journal of Emerging Markets, Oct 20, 2020
Case research was conducted on multinational manufacturers providing field repair services in Egy... more Case research was conducted on multinational manufacturers providing field repair services in Egypt. The sample is made up of twelve companies across different industries using convenience and purposive sampling. Data was collected using structured interviews. Findings-There is no common model for field repair product-service systems provision in the Egyptian emerging market even within the same industry, which is influenced by several factors. One of these factors is the market type being emerging or established. However, some commonalities have been found between some industries such as computer, telecommunications, and document processing. Yet, there is no structural difference in the supply networks used to provide field repair service offerings in the Egyptian emerging market compared to established markets with the trend of outsourcing evident as a main attribute of a product-service system in emerging markets. The main differences between established and emerging markets are related to country, culture, and customer factors, which are market-based. Among the main challenges and risks that internationalized manufacturers face in Egypt, is the low level of customer awareness. Research limitations/implications-Findings are limited to the studied cases and industries; yet, internationalized firms must deal with some unique challenges and difficulties in emerging markets. Practical implications-This paper assesses product-service system requirements and provides deeper insights for companies looking to provide or expand manufacturing-based offerings into the Egyptian emerging market. Originality/value-This paper contributes to the evolving research on product-service systems, particularly in emerging markets through identifying and describing different field repair productservice system models in the Egyptian emerging market.
Traditional industrial engineering techniques including mathematical models are not sufficient to... more Traditional industrial engineering techniques including mathematical models are not sufficient to examine sophisticated manufacturing systems such as semiconductor manufacturing. As such, simulation modeling is used extensively in the design and analysis of semiconductor manufacturing operations. This study explores the use of simulation modeling of single semiconductor toolsets. In the literature a number of modeling approaches for single toolset analysis can be identified. The purpose of this study is to review and evaluate these approaches. 1
Http Dx Doi Org 10 1080 09537289208928213, Mar 8, 2007
Production Planning & Control, 1992
International Journal of Production Research, 1992
International Journal of Computer Integrated Manufacturing, 2004
While discrete event simulation technology holds tremendous promise and has a strong and establis... more While discrete event simulation technology holds tremendous promise and has a strong and established background, manufacturing industry has been less than successful in the implementation of simulation as a decision support tool. This paper reports on research into developing simulation into a sustainable desktop resource to be used continuously by various manufacturing personnel as a decision support tool. A case
Serial flow or production lines are modeled as tandem queueing networks and formulated as continu... more Serial flow or production lines are modeled as tandem queueing networks and formulated as continuous-time Markov chains to investigate how to maximize throughput or minimize the average work-in-process (WIP) when the total service time and the total number of service phases among the stations are fixed (these are the workload and 'phaseload' allocation problems, respectively). This paper examines both the effect of the kind of service time distribution on the optimal workload allocation in order to maximize throughput or minimize the average WIP of perfectly reliable production lines.
Or Spektrum, 2005
Abstract. In order to overcome the disadvantages of Kanban Control Strategy (KCS) in non-repetiti... more Abstract. In order to overcome the disadvantages of Kanban Control Strategy (KCS) in non-repetitive manufacturing environments, two research approaches have been followed in the literature in past two decades. The first approach has been concerned with developing new, or ...
Software: Practice and Experience, 2015
Journal of Advanced Management Science, 2015
Planning, Forecasting and Replenishment (CPFR) is one of the collaborative strategies in supply c... more Planning, Forecasting and Replenishment (CPFR) is one of the collaborative strategies in supply chain management that aims to coordinate the diverse processes of supply chain management. Despite it was identified that CPFR is playing an important role in supply chain performance improvement, the dynamic interactions among its subsystems have not been explored in previous research. This research aims to identify the interactions among effective enablers and the potential impact of each enabler on successful implement CPFR through the development of a structural model and system dynamics simulation modelling. To reach this goal, the significant enablers and results reported in our previous research have been explored. The causal relationships among different variables and stock and flow diagram are then developed by applying system dynamics. A CPFR dynamic model based on a number of assumptions is finally proposed. The resulting casual loop helps the reader to better understand and learn the dynamic interactions of CPFR subsystems. Index Terms-CPFR implementation, implementation enablers, interpretive structural modelling, system dynamics
Journal of Economics, Business and Management, 2015
In competitive global industries, the relationship between firms has changed from rivalry to coll... more In competitive global industries, the relationship between firms has changed from rivalry to collaboration using developed collaborative schemes like Collaborative Planning, Forecasting and Replenishment CPFR. Through partnerships, both parties should be mutually benefited. The key factor that maintains such relationships lies in addressing the question on how to select the right partner. In other words, lack of compatibility of partners' abilities and improper selection of partners will result in the failure of collaboration. While CPFR is a way that manufacturers and retailers mostly collaborate, there exists an important challenge for manufacturers to select proper retailers. The purpose of this study is to introduce and explore the key factors considered by manufacturers in retailer selection and the relationships between these factors. Based on a comprehensive literature review and applying experts' views the most important retailer selection factors are introduced. Fuzzy DEMATEL is applied to further analyse their interrelationships. Based on the empirical results, conclusions and suggestions are proposed as a reference for manufacturers and retailer. College Galway and holds a M.Eng.Sc. and Ph.D. from the same University. He has published in the areas of queuing and simulation modelling.
This paper presents a technique, Simulation Activity Diagrams (SAD), developed to lessen the mode... more This paper presents a technique, Simulation Activity Diagrams (SAD), developed to lessen the modelling burden during the initial requirements gathering phases of a simulation project. The technique also allows the capture and visual communication of detailed information, to manufacturing personnel, which may otherwise be lost in detailed programming code.
Proceedings Title: Proceedings of the 2012 Winter Simulation Conference (WSC), 2012
ABSTRACT The purpose of this paper is to evaluate an option contract within a semiconductor suppl... more ABSTRACT The purpose of this paper is to evaluate an option contract within a semiconductor supply chain consisting of one semiconductor manufacturer and one customer. In an option contract the customer pays an upfront fee (option price) for an option to purchase product. A simulation model is used to compare the performance of an option contract against a standard supply contract used in a semiconductor supply chain in terms of delivery performance and costs for the supply chain partners.
This paper describes the application of computer simulation to manufacturing operations analysis.... more This paper describes the application of computer simulation to manufacturing operations analysis. The system studied can be considered as a batch type, production flow line with one main bottleneck. A description is given of the tasks required to develop the model, such as data collection, model coding and model verification and validation. The simulation model was developed using the WITNESS simulation package. A sample set of experiments is described to illustrate the use of the simulation model to support manufacturing operations analysis. While the results from the simulation model where found useful to the company, the project highlights the effort required to successfully develop a simulation model. The project also highlighted a number of deficiencies with the type of simulation package used.
Manufacturing systems are becoming more automated and, as a result, more complex and difficult to... more Manufacturing systems are becoming more automated and, as a result, more complex and difficult to control and operate. It is important that manufacturing engineers have tools that properly support their activities on a continuous basis. A number of tools are available to address manufacturing systems design and operations. Of these tools simulation is the only one capable of dealing with all the detailed decisions that must be made in designing and operating these systems. This paper describes a simulation project carried out in a SME. The SME manufacturing system is best described as a batch production flow shop. The development and validation of the model took approximately nine man-months. Once validated a wide range of experiments where carried out on the model including, work schedules, improving efficiency of the bottleneck station, capital investment, sequencing and order release mechanism. Through these experiments the company could see a real need for simulation based tools to support their activities. To illustrate this point this paper will describe the use of simulation to support a capital investment decision. However the main purpose of the paper is to highlight practical issues relating to the introduction of simulation into a SME. These issues mainly relate to simulation software selection and how this software is best utilised.
International Journal of Computer Integrated Manufacturing, Nov 1, 2012
In this study, a wet bench cluster is examined through a highly detailed simulation model to firs... more In this study, a wet bench cluster is examined through a highly detailed simulation model to first understand the tool performance under different process mixes and lot arrival patterns and second to improve the tool performance using different recipe sequences and loading policies. Results of the simulation experiments show that there is benefit in rationalising the number of recipes to
International Journal of Production Research, 2016
This paper develops and tests a novel extension to traditional supplier selection practice, with ... more This paper develops and tests a novel extension to traditional supplier selection practice, with a particular focus on the concluding stages of a manufacturing based field service. Action based research was used to design and develop a discrete event simulation (DES) decision support for a large multinational manufacturing organisation with a significant after sales service supply chain. The framework has been designed to identify and validate the value attributable to collaborative supplier contracting with built in costed performance improvement targets. Use of the framework in the case organization was found to produce greater cost savings over traditional practice, facilitating extended supply chain contracts. The results provide evidence of the high level of savings achievable whilst also improving customer delivery through targeted service improvements over the contracts life cycle. This framework advances beyond the prevalent practice of cost focused short term adversarial supply contracting and is innovative in terms of its continuous improvement simulation based framework design.
International Journal of Emerging Markets, Oct 20, 2020
Case research was conducted on multinational manufacturers providing field repair services in Egy... more Case research was conducted on multinational manufacturers providing field repair services in Egypt. The sample is made up of twelve companies across different industries using convenience and purposive sampling. Data was collected using structured interviews. Findings-There is no common model for field repair product-service systems provision in the Egyptian emerging market even within the same industry, which is influenced by several factors. One of these factors is the market type being emerging or established. However, some commonalities have been found between some industries such as computer, telecommunications, and document processing. Yet, there is no structural difference in the supply networks used to provide field repair service offerings in the Egyptian emerging market compared to established markets with the trend of outsourcing evident as a main attribute of a product-service system in emerging markets. The main differences between established and emerging markets are related to country, culture, and customer factors, which are market-based. Among the main challenges and risks that internationalized manufacturers face in Egypt, is the low level of customer awareness. Research limitations/implications-Findings are limited to the studied cases and industries; yet, internationalized firms must deal with some unique challenges and difficulties in emerging markets. Practical implications-This paper assesses product-service system requirements and provides deeper insights for companies looking to provide or expand manufacturing-based offerings into the Egyptian emerging market. Originality/value-This paper contributes to the evolving research on product-service systems, particularly in emerging markets through identifying and describing different field repair productservice system models in the Egyptian emerging market.
Traditional industrial engineering techniques including mathematical models are not sufficient to... more Traditional industrial engineering techniques including mathematical models are not sufficient to examine sophisticated manufacturing systems such as semiconductor manufacturing. As such, simulation modeling is used extensively in the design and analysis of semiconductor manufacturing operations. This study explores the use of simulation modeling of single semiconductor toolsets. In the literature a number of modeling approaches for single toolset analysis can be identified. The purpose of this study is to review and evaluate these approaches. 1
Http Dx Doi Org 10 1080 09537289208928213, Mar 8, 2007
Production Planning & Control, 1992
International Journal of Production Research, 1992
International Journal of Computer Integrated Manufacturing, 2004
While discrete event simulation technology holds tremendous promise and has a strong and establis... more While discrete event simulation technology holds tremendous promise and has a strong and established background, manufacturing industry has been less than successful in the implementation of simulation as a decision support tool. This paper reports on research into developing simulation into a sustainable desktop resource to be used continuously by various manufacturing personnel as a decision support tool. A case
Serial flow or production lines are modeled as tandem queueing networks and formulated as continu... more Serial flow or production lines are modeled as tandem queueing networks and formulated as continuous-time Markov chains to investigate how to maximize throughput or minimize the average work-in-process (WIP) when the total service time and the total number of service phases among the stations are fixed (these are the workload and 'phaseload' allocation problems, respectively). This paper examines both the effect of the kind of service time distribution on the optimal workload allocation in order to maximize throughput or minimize the average WIP of perfectly reliable production lines.
Or Spektrum, 2005
Abstract. In order to overcome the disadvantages of Kanban Control Strategy (KCS) in non-repetiti... more Abstract. In order to overcome the disadvantages of Kanban Control Strategy (KCS) in non-repetitive manufacturing environments, two research approaches have been followed in the literature in past two decades. The first approach has been concerned with developing new, or ...
Software: Practice and Experience, 2015
Journal of Advanced Management Science, 2015
Planning, Forecasting and Replenishment (CPFR) is one of the collaborative strategies in supply c... more Planning, Forecasting and Replenishment (CPFR) is one of the collaborative strategies in supply chain management that aims to coordinate the diverse processes of supply chain management. Despite it was identified that CPFR is playing an important role in supply chain performance improvement, the dynamic interactions among its subsystems have not been explored in previous research. This research aims to identify the interactions among effective enablers and the potential impact of each enabler on successful implement CPFR through the development of a structural model and system dynamics simulation modelling. To reach this goal, the significant enablers and results reported in our previous research have been explored. The causal relationships among different variables and stock and flow diagram are then developed by applying system dynamics. A CPFR dynamic model based on a number of assumptions is finally proposed. The resulting casual loop helps the reader to better understand and learn the dynamic interactions of CPFR subsystems. Index Terms-CPFR implementation, implementation enablers, interpretive structural modelling, system dynamics
Journal of Economics, Business and Management, 2015
In competitive global industries, the relationship between firms has changed from rivalry to coll... more In competitive global industries, the relationship between firms has changed from rivalry to collaboration using developed collaborative schemes like Collaborative Planning, Forecasting and Replenishment CPFR. Through partnerships, both parties should be mutually benefited. The key factor that maintains such relationships lies in addressing the question on how to select the right partner. In other words, lack of compatibility of partners' abilities and improper selection of partners will result in the failure of collaboration. While CPFR is a way that manufacturers and retailers mostly collaborate, there exists an important challenge for manufacturers to select proper retailers. The purpose of this study is to introduce and explore the key factors considered by manufacturers in retailer selection and the relationships between these factors. Based on a comprehensive literature review and applying experts' views the most important retailer selection factors are introduced. Fuzzy DEMATEL is applied to further analyse their interrelationships. Based on the empirical results, conclusions and suggestions are proposed as a reference for manufacturers and retailer. College Galway and holds a M.Eng.Sc. and Ph.D. from the same University. He has published in the areas of queuing and simulation modelling.
This paper presents a technique, Simulation Activity Diagrams (SAD), developed to lessen the mode... more This paper presents a technique, Simulation Activity Diagrams (SAD), developed to lessen the modelling burden during the initial requirements gathering phases of a simulation project. The technique also allows the capture and visual communication of detailed information, to manufacturing personnel, which may otherwise be lost in detailed programming code.
Proceedings Title: Proceedings of the 2012 Winter Simulation Conference (WSC), 2012
ABSTRACT The purpose of this paper is to evaluate an option contract within a semiconductor suppl... more ABSTRACT The purpose of this paper is to evaluate an option contract within a semiconductor supply chain consisting of one semiconductor manufacturer and one customer. In an option contract the customer pays an upfront fee (option price) for an option to purchase product. A simulation model is used to compare the performance of an option contract against a standard supply contract used in a semiconductor supply chain in terms of delivery performance and costs for the supply chain partners.
This paper describes the application of computer simulation to manufacturing operations analysis.... more This paper describes the application of computer simulation to manufacturing operations analysis. The system studied can be considered as a batch type, production flow line with one main bottleneck. A description is given of the tasks required to develop the model, such as data collection, model coding and model verification and validation. The simulation model was developed using the WITNESS simulation package. A sample set of experiments is described to illustrate the use of the simulation model to support manufacturing operations analysis. While the results from the simulation model where found useful to the company, the project highlights the effort required to successfully develop a simulation model. The project also highlighted a number of deficiencies with the type of simulation package used.
Manufacturing systems are becoming more automated and, as a result, more complex and difficult to... more Manufacturing systems are becoming more automated and, as a result, more complex and difficult to control and operate. It is important that manufacturing engineers have tools that properly support their activities on a continuous basis. A number of tools are available to address manufacturing systems design and operations. Of these tools simulation is the only one capable of dealing with all the detailed decisions that must be made in designing and operating these systems. This paper describes a simulation project carried out in a SME. The SME manufacturing system is best described as a batch production flow shop. The development and validation of the model took approximately nine man-months. Once validated a wide range of experiments where carried out on the model including, work schedules, improving efficiency of the bottleneck station, capital investment, sequencing and order release mechanism. Through these experiments the company could see a real need for simulation based tools to support their activities. To illustrate this point this paper will describe the use of simulation to support a capital investment decision. However the main purpose of the paper is to highlight practical issues relating to the introduction of simulation into a SME. These issues mainly relate to simulation software selection and how this software is best utilised.
International Journal of Emerging Markets, 2020
Purpose The purpose of this paper aims to evaluate field repair within product-service system (PS... more Purpose
The purpose of this paper aims to evaluate field repair within product-service system (PSS) models operated by multinational manufacturers in the Egyptian emerging market to better understand the unique characteristics of this evolving market and to identify differences compared to established markets.
Design/methodology/approach
Case research was conducted on multinational manufacturers providing field repair services in Egypt. The sample is made up of 12 companies across different industries using convenience and purposive sampling. Data were collected using structured interviews.
Findings
There is no common model for field repair PSSs provision in the Egyptian emerging market even within the same industry, which is influenced by several factors. One of these factors is the market type being emerging or established. However, some commonalities have been found between some industries such as computer, telecommunications and document processing. Yet, there is no structural difference in the supply networks used to provide field repair service offerings in the Egyptian emerging market compared to established markets with the trend of outsourcing evident as a main attribute of a PSS in emerging markets. The main differences between established and emerging markets are related to country, culture and customer factors, which are market-based. Among the main challenges and risks that internationalized manufacturers face in Egypt, is the low level of customer awareness.
Research limitations/implications
Findings are limited to the studied cases and industries; yet, internationalized firms must deal with some unique challenges and difficulties in emerging markets.
Practical implications
This paper assesses PSS requirements and provides deeper insights for companies looking to provide or expand manufacturing-based offerings into the Egyptian emerging market.
Originality/value
This paper contributes to the evolving research on PSSs, particularly in emerging markets through identifying and describing different field repair PSS models in the Egyptian emerging market.