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Papers by Manuel Rossetti

Logistics Engineering Handbook, 2007

Abstract Large multi-echelon inventory systems usually consist of hundreds of thousands of stock ... more Abstract Large multi-echelon inventory systems usually consist of hundreds of thousands of stock keep units (SKU). Calculating inventory policies for each product is a computational burden that necessitates the need for more efficient policy setting techniques that reduce ...

Journal of Manufacturing Systems, 1998

Manufacturing firms rely on automatic data collection systems to replace labor-intensive data col... more Manufacturing firms rely on automatic data collection systems to replace labor-intensive data collection methods. Most systems concentrate on locating and counting parts without regard to transaction times; however, by capturing and procassing event times, additional system characteristics can be inferred. Using product arrival and departure event transactions b~ed on bar code technology, this research develops a methodology for estimating the amount of workload in a workcerrter with a parallel server structure commonly found in practice. This paper presents an evaluation of the accuracy and precision of the resulting workload estimators under conditions of varying product mix. It was found that the relative proportion of products in the production mix can have a significant effect on estimator performance. For production mixes that change infrequently, the estimator was within 5% of the true workcenter load in 98% of the experiments. The estimator is simple and can be continually updated as new data are collected. This research illustrates the value-added benefits to be gained in utilizing bar code timing information for developing estimates of workcenter load especially within computer-automated shop floor control systems.

2015 Winter Simulation Conference (WSC), 2015

Winter Simulation Conference, 2000

This paper presents an overview of a software design framework for the development of object-orie... more This paper presents an overview of a software design framework for the development of object-oriented simulations. The framework is documented using the Unified Modeling Language (UML) and is divided into packages to organize the collection of classes into important functional areas. The purpose of the framework is two-fold. First, the framework is useful in understanding the concepts and abstractions within

Proceedings of the 31st conference on Winter simulation Simulation---a bridge to the future - WSC '99, 1999

Efficient allocation and utilization of staff resources is an important issue facing emergency de... more Efficient allocation and utilization of staff resources is an important issue facing emergency department (ED) administrators. Increased pressure from competition, heath care reform, reimbursement difficulties, and rising heath care costs are primarily responsible for the high level of interest in this, and other ED operating efficiency issues. This paper discusses the use of computer simulation to test alternative ED attending physicianstaffing schedules and to analyze the corresponding impacts on patient throughput and resource utilization. The simulation model can also be used to help identify process inefficiencies and to evaluate the effects of staffing, layout, resource, and patient flow changes on system performance without disturbing the actual system. The development of this model was based on the

Proceedings of the 2006 Winter Simulation Conference, 2006

In this paper, we discuss the design and use of a proto-type object-oriented framework for simula... more In this paper, we discuss the design and use of a proto-type object-oriented framework for simulating automatic data collection systems within their operational contexts. We motivate the purpose of the framework and how the framework can be used through the use of a simple sce- ...

Proceedings of the 29th conference on Winter simulation - WSC '97, 1997

Page 1. Proceedings of the 1997 Winter Simulation Conference ed. S. Andraddttir, KJ Healy, DH Wit... more Page 1. Proceedings of the 1997 Winter Simulation Conference ed. S. Andraddttir, KJ Healy, DH Withers, and BL Nelson ACTIVATE THIS CLASSROOM AT TIME NOW Manuel D. Rossetti Department of Systems Engineering ...

International Journal of Operational Research, 2011

Many organisations purchase equipment that is subject to unpredictable failures to carry out thei... more Many organisations purchase equipment that is subject to unpredictable failures to carry out their services. When these breakdowns occur, maintenance technicians restore the equipment in a timely fashion either through repair or the installation of spare parts. In this ...

Proceedings of the 2009 Winter Simulation Conference (WSC), 2009

This paper investigates stock keeping unit (SKU) proliferation and its impact on a health care su... more This paper investigates stock keeping unit (SKU) proliferation and its impact on a health care supply chain. There are two types of proliferation: acceptance and adoption. The acceptance case occurs when a hospital requests a SKU and the SKU is not carried by the system. The adoption case occurs when the SKU is not carried by the requesting hospital, but is carried by some other hospital within the system. A multi-item, multi-echelon supply chain model with load building and delivery details was constructed to examine cost and performance tradeoffs. Object-oriented modeling and implementation techniques for the SKU proliferation simulation are described. The results indicate that the acceptance and adoption jointly affect the performance of the supply chain in terms of the service level (demand fill rate) and the cost. The models and results provide a test bed for addressing and mitigating the effect of proliferation within healthcare supply chains. 2365 978-1-4244-5771-7/09/$26.00 ©2009 IEEE Rossetti and Liu 2 SIMULATION MODELING

Winter Simulation Conference, 2000

We present an overview of a software design framework for the development of object-oriented simu... more We present an overview of a software design framework for the development of object-oriented simulations. The framework is documented using the Unified Modeling Language (UML) and is divided into packages to organize the collection of classes into important functional areas. The purpose of the framework is two-fold. First, the framework is useful in understanding the concepts and abstractions within simulation

This paper discusses a system for automating the performance benchmarking of transportation servi... more This paper discusses a system for automating the performance benchmarking of transportation service providers. The system allows for the identification, evalua tion, collection, and analysis of performance metric information in a secure on-line data-driven environment. The current system has a total of seventy-nine metrics arranged in a balanced scorecard classification. In addition, the system allows transportation service providers to perform a multi-attribute decision technique to investigate best-in-class performance. This paper details the metrics and the system functionality.

Page 1. AFRL-HE-WP-TR-2006-0014 STINFO COPY AIR FORCE RESEARCH LABORATORY Hybrid Simulation/Analy... more Page 1. AFRL-HE-WP-TR-2006-0014 STINFO COPY AIR FORCE RESEARCH LABORATORY Hybrid Simulation/Analytic Models for Military Supply Chain Performance Analysis Stephen Farris Manuel D. Rossetti University ...

Many forecasting techniques have been proposed for controlling inventory in the literature. The j... more Many forecasting techniques have been proposed for controlling inventory in the literature. The justification of a forecasting technique in terms of its total cost is important for ensuring that it is adopted and used in practice. Total forecasting cost entails both the cost of operating the procedure and the cost of the resulting forecast errors. This paper proposes a methodology to compare forecasting techniques by measuring the cost/benefits of reducing forecast error within the context of the operational performance of an inventory system.

Ijstm, 2000

Current transit data collection systems emphasize either passenger counting or vehicle location i... more Current transit data collection systems emphasize either passenger counting or vehicle location information. The prototype described in this paper represents the integration of automatic passenger counting with automatic vehicle location to allow the automatic collection of transit system performance. The system involves the incorporation of RF/ID tags into bus passes for the purpose of improving the methods of data collection regarding transit users. Passengers carrying the tags can then be uniquely identified. In addition, RF/ID tags are placed at the bus stops to track the movement of busses along the route. This paper details the system hardware and software architecture, the functionality of the system, passenger and cost considerations, and the application of the system for possible use in route control strategies.

Google, Inc. (search). ...

International Journal of Supply Chain Management, Oct 14, 2012

Standard Form 298 (Rev. 8/98) REPORT DOCUMENTATION PAGE Prescribed by ANSI Std. Z39.18 Form Appro... more Standard Form 298 (Rev. 8/98) REPORT DOCUMENTATION PAGE Prescribed by ANSI Std. Z39.18 Form Approved OMB No. 0704-0188

This study examines the quality of the solutions obtained via an analytical inventory model again... more This study examines the quality of the solutions obtained via an analytical inventory model against a simulation model. The analytical inventory model is dependent upon approximate expressions for performance measures such as the average number of backorders. In this study, a one-warehouse, two-echelon inventory simulation model is developed and used to predict the performance measures for a given set of inventory policy parameters. The policy parameters are estimated using the optimization algorithm and used as an input parameters for the simulation model. The data shows that there is significant difference between the actual and analytical performance measures and suggests future areas of research.

Logistics Engineering Handbook, 2007

Abstract Large multi-echelon inventory systems usually consist of hundreds of thousands of stock ... more Abstract Large multi-echelon inventory systems usually consist of hundreds of thousands of stock keep units (SKU). Calculating inventory policies for each product is a computational burden that necessitates the need for more efficient policy setting techniques that reduce ...

Journal of Manufacturing Systems, 1998

Manufacturing firms rely on automatic data collection systems to replace labor-intensive data col... more Manufacturing firms rely on automatic data collection systems to replace labor-intensive data collection methods. Most systems concentrate on locating and counting parts without regard to transaction times; however, by capturing and procassing event times, additional system characteristics can be inferred. Using product arrival and departure event transactions b~ed on bar code technology, this research develops a methodology for estimating the amount of workload in a workcerrter with a parallel server structure commonly found in practice. This paper presents an evaluation of the accuracy and precision of the resulting workload estimators under conditions of varying product mix. It was found that the relative proportion of products in the production mix can have a significant effect on estimator performance. For production mixes that change infrequently, the estimator was within 5% of the true workcenter load in 98% of the experiments. The estimator is simple and can be continually updated as new data are collected. This research illustrates the value-added benefits to be gained in utilizing bar code timing information for developing estimates of workcenter load especially within computer-automated shop floor control systems.

2015 Winter Simulation Conference (WSC), 2015

Winter Simulation Conference, 2000

This paper presents an overview of a software design framework for the development of object-orie... more This paper presents an overview of a software design framework for the development of object-oriented simulations. The framework is documented using the Unified Modeling Language (UML) and is divided into packages to organize the collection of classes into important functional areas. The purpose of the framework is two-fold. First, the framework is useful in understanding the concepts and abstractions within

Proceedings of the 31st conference on Winter simulation Simulation---a bridge to the future - WSC '99, 1999

Efficient allocation and utilization of staff resources is an important issue facing emergency de... more Efficient allocation and utilization of staff resources is an important issue facing emergency department (ED) administrators. Increased pressure from competition, heath care reform, reimbursement difficulties, and rising heath care costs are primarily responsible for the high level of interest in this, and other ED operating efficiency issues. This paper discusses the use of computer simulation to test alternative ED attending physicianstaffing schedules and to analyze the corresponding impacts on patient throughput and resource utilization. The simulation model can also be used to help identify process inefficiencies and to evaluate the effects of staffing, layout, resource, and patient flow changes on system performance without disturbing the actual system. The development of this model was based on the

Proceedings of the 2006 Winter Simulation Conference, 2006

In this paper, we discuss the design and use of a proto-type object-oriented framework for simula... more In this paper, we discuss the design and use of a proto-type object-oriented framework for simulating automatic data collection systems within their operational contexts. We motivate the purpose of the framework and how the framework can be used through the use of a simple sce- ...

Proceedings of the 29th conference on Winter simulation - WSC '97, 1997

Page 1. Proceedings of the 1997 Winter Simulation Conference ed. S. Andraddttir, KJ Healy, DH Wit... more Page 1. Proceedings of the 1997 Winter Simulation Conference ed. S. Andraddttir, KJ Healy, DH Withers, and BL Nelson ACTIVATE THIS CLASSROOM AT TIME NOW Manuel D. Rossetti Department of Systems Engineering ...

International Journal of Operational Research, 2011

Many organisations purchase equipment that is subject to unpredictable failures to carry out thei... more Many organisations purchase equipment that is subject to unpredictable failures to carry out their services. When these breakdowns occur, maintenance technicians restore the equipment in a timely fashion either through repair or the installation of spare parts. In this ...

Proceedings of the 2009 Winter Simulation Conference (WSC), 2009

This paper investigates stock keeping unit (SKU) proliferation and its impact on a health care su... more This paper investigates stock keeping unit (SKU) proliferation and its impact on a health care supply chain. There are two types of proliferation: acceptance and adoption. The acceptance case occurs when a hospital requests a SKU and the SKU is not carried by the system. The adoption case occurs when the SKU is not carried by the requesting hospital, but is carried by some other hospital within the system. A multi-item, multi-echelon supply chain model with load building and delivery details was constructed to examine cost and performance tradeoffs. Object-oriented modeling and implementation techniques for the SKU proliferation simulation are described. The results indicate that the acceptance and adoption jointly affect the performance of the supply chain in terms of the service level (demand fill rate) and the cost. The models and results provide a test bed for addressing and mitigating the effect of proliferation within healthcare supply chains. 2365 978-1-4244-5771-7/09/$26.00 ©2009 IEEE Rossetti and Liu 2 SIMULATION MODELING

Winter Simulation Conference, 2000

We present an overview of a software design framework for the development of object-oriented simu... more We present an overview of a software design framework for the development of object-oriented simulations. The framework is documented using the Unified Modeling Language (UML) and is divided into packages to organize the collection of classes into important functional areas. The purpose of the framework is two-fold. First, the framework is useful in understanding the concepts and abstractions within simulation

This paper discusses a system for automating the performance benchmarking of transportation servi... more This paper discusses a system for automating the performance benchmarking of transportation service providers. The system allows for the identification, evalua tion, collection, and analysis of performance metric information in a secure on-line data-driven environment. The current system has a total of seventy-nine metrics arranged in a balanced scorecard classification. In addition, the system allows transportation service providers to perform a multi-attribute decision technique to investigate best-in-class performance. This paper details the metrics and the system functionality.

Page 1. AFRL-HE-WP-TR-2006-0014 STINFO COPY AIR FORCE RESEARCH LABORATORY Hybrid Simulation/Analy... more Page 1. AFRL-HE-WP-TR-2006-0014 STINFO COPY AIR FORCE RESEARCH LABORATORY Hybrid Simulation/Analytic Models for Military Supply Chain Performance Analysis Stephen Farris Manuel D. Rossetti University ...

Many forecasting techniques have been proposed for controlling inventory in the literature. The j... more Many forecasting techniques have been proposed for controlling inventory in the literature. The justification of a forecasting technique in terms of its total cost is important for ensuring that it is adopted and used in practice. Total forecasting cost entails both the cost of operating the procedure and the cost of the resulting forecast errors. This paper proposes a methodology to compare forecasting techniques by measuring the cost/benefits of reducing forecast error within the context of the operational performance of an inventory system.

Ijstm, 2000

Current transit data collection systems emphasize either passenger counting or vehicle location i... more Current transit data collection systems emphasize either passenger counting or vehicle location information. The prototype described in this paper represents the integration of automatic passenger counting with automatic vehicle location to allow the automatic collection of transit system performance. The system involves the incorporation of RF/ID tags into bus passes for the purpose of improving the methods of data collection regarding transit users. Passengers carrying the tags can then be uniquely identified. In addition, RF/ID tags are placed at the bus stops to track the movement of busses along the route. This paper details the system hardware and software architecture, the functionality of the system, passenger and cost considerations, and the application of the system for possible use in route control strategies.

Google, Inc. (search). ...

International Journal of Supply Chain Management, Oct 14, 2012

Standard Form 298 (Rev. 8/98) REPORT DOCUMENTATION PAGE Prescribed by ANSI Std. Z39.18 Form Appro... more Standard Form 298 (Rev. 8/98) REPORT DOCUMENTATION PAGE Prescribed by ANSI Std. Z39.18 Form Approved OMB No. 0704-0188

This study examines the quality of the solutions obtained via an analytical inventory model again... more This study examines the quality of the solutions obtained via an analytical inventory model against a simulation model. The analytical inventory model is dependent upon approximate expressions for performance measures such as the average number of backorders. In this study, a one-warehouse, two-echelon inventory simulation model is developed and used to predict the performance measures for a given set of inventory policy parameters. The policy parameters are estimated using the optimization algorithm and used as an input parameters for the simulation model. The data shows that there is significant difference between the actual and analytical performance measures and suggests future areas of research.