Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Quasi-monte Carlo, Via Linear, ...
Linear recurrences modulo 2 with long periods have been widely used for contructing (pseudo)random number generators. Here, we use them for quasi-Monte Carlo integration over the unit hypercube. Any...
DISTRIBUTED REAL-TIME SIMULATION FOR INTRUDER DETECTION SYSTEM ANALYSIS (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Jeffrey S. Smith
This paper describes a distributed simulation system developed for evaluation of physical security systems. The work extends previous work by extracting several system components that were previously...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, John Tufarolo, Jeff Nielsen, ...
A new distributed test system is used to verify the Runtime Infrastructure (RTI) component of the High Level Architecture (HLA). As part of this effort, a test suite has been designed and implemented...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, David Frankis, Noel Corrigan, ...
MODELLING MILITARY REQUIREMENTS FOR NON-WARFIGHTING OPERATIONS This paper describes work undertaken for national force development and planning staff, and NATO scientific staff, developing methods...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
HEALTHCARE SIMULATION: A CASE STUDY AT A LOCAL CLINIC Today, researchers and analysts are beginning to uncover the potential for using simulation in the health care field; with a multitude of...
SMG: A NEW SIMULATION/OPTIMIZATION APPROACH FOR LARGE-SCALE PROBLEMS (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Christopher W. Zobel
It typically can be difficult to create and solve optimization models for large-scale sequential decision problems, examples of which include applications such as communications networks, inventory...
INTEGRATING DISCRETE-EVENT SIMULATION WITH STATISTICAL PROCESS CONTROL (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Charts For, Transitions In, ...
We present a model that integrates real-time process control charting with simulation modeling to illustrate the effects and benefits of SPC charts for quality improvement efforts. The integrated...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, David K. Chin
There is a general consensus between the Federal Aviation Administration (FAA) and the aviation industry on the enormous potential for time and resource savings associated with future flights that...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
A SIMULATION AIDED SOLUTION TO AN MCDM PROBLEM A forest treatment problem arising in a Northern Arizona region is first formulated as a discrete MCDM problem, in which the payoff values are...
ABSTRACT KEY FACTORS IN ROAD-RAIL MODE CHOICE IN INDIA: APPLYING THE LOGISTICS COST APPROACH (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Peter D. Cook, Sanjay Das
There have been major changes in the share of road and rail traffic in India as the economy and the population has grown and become more urbanized. This paper summarizes the key factors for mode...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Andrew J. Siprelle, David J. Parsons, ...
SDI INDUSTRY PRO: SIMULATION FOR ENTERPRISE-WIDE PROBLEM SOLVING SDI Industry Pro is a versatile, high-level simulation toolset for solving problems of whole enterprises. It adds important...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Daniel W. Halpin
REAL WORLD APPLICATIONS OF CONSTRUCTION PROCESS SIMULATION Construction simulation has been an academic tool since the 1960's. There are over 20 construction programs in the U.S. and Canada that...
A CASE STUDY IN THE QUANTIFICATION OF A CHANGE IN THE (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Conditions Of, A Highway, ...
Changes in the conditions under which construction operations take place disrupt projects and can have severe construction cost impacts that must be quantified. This paper presents a case study in...
SELECTION PROCEDURES WITH STANDARDIZED TIME (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Series Variance Estimators
This article studies a modification of Rinott’s two-stage procedure for selecting the normal population with the largest (or smallest) mean. The modification, which is appropriate for use in the...
A PROPOSED SIMULATION COST MODELING METHODOLOGY (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
A unique approach is developed for evaluating personnel requirements of the National Imagery and Mapping Agency (NIMA). With this approach new ways of measuring personnel availability are proposed...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
This paper addresses the problem of goal-driven simulation. Goal-driven simulation is a task frequently performed by users of simulation systems. It consists in determining, when possible, an...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, M. Isabel, Reis Santos
In this paper, we investigate and discuss some of the main issues concerning the estimation of nonlinear simulation metamodels. We propose a methodology for identifying a tentative functional...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Oryal Tanir
Call centers have relied historically, on Erlang-C based estimation formulas to help determine number of agent positions and queue parameters. These estimators have worked fairly well in traditional...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
In this paper we document a case study based upon an ongoing analysis for a U.S. fiber/fabric manufacturer who is expanding its operations vertically to include cut and sew operations in Mexico. We...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
HOW i2 INTEGRATES SIMULATION IN SUPPLY CHAIN OPTIMIZATION This paper will set out, at a high level, the methods in which i2 solutions will enable value in the 21 st century enterprise. With regards...
ABSTRACT EVALUATION OF CLUSTER TOOL THROUGHPUT FOR THIN FILM HEAD PRODUCTION (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Eric J. Koehler, Timbur M. Wulf, ...
This paper describes the application of simulation for analyzing cluster tool cycle times and cluster tool capacity planning. The objective of this project was to develop a flexible and expandable...
ABSTRACT COMPUTING THE DISTRIBUTION FUNCTION OF A CONDITIONAL EXPECTATION (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Via Monte, Carlo Discrete, ...
We examine different ways of numerically computing the distribution function of conditional expectations where the conditioning element takes values in a finite or countably infinite outcome space....
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, James M. Calvin
We describe a simulation output analysis methodology suitable for stochastic processes that are regenerative with respect to multiple regeneration sequences. Our method exploits this structure to...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Marc Aguilar, Tankred Rautert
Business processes are increasingly recognised as the key to competitive survival. The important opportunities inherent to this invisible economic asset are the foundations of process centred...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Simulating business enterprises is the next major application approach to using simulation technology effectively. Although the term enterprise simulation or something similar is being use with...
ABSTRACT SIMULATION-BASED ESTIMATION OF QUANTILES (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, E. Jack Chen, W. David Kelton
This paper discusses implementation of a sequential quantileestimation algorithm for highly correlated steady-state simulation output. Our primary focus is on issues related to computational and...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Various forms of distributed simulation are possible over the world-wide web, including simple multiple replications of the same model, client-server architectures for one or more simultaneously...
ABSTRACT SIMULATION OF THE STRUCTURAL STEEL ERECTION PROCESS (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Anil Sawhney, André Mund, ...
The construction industry’s growth and the adoption of newer means, methods, and materials of construction have resulted in an increase in complexity of on-site construction processes....
LESSONS LEARNED FROM THE DESIGN AND EXECUTION OF A FEDERATION FOR JOINT EXPERIMENTATION (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
The Trailblazer project was created to examine the application of a federation of simulations to joint experimentation. This paper reviews the lessons learned as the Federation Execution and...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
OPTIMISTIC PARALLEL SIMULATION OVER A NETWORK OF WORKSTATIONS The low cost and scalability of a PC and ethernet-based network of workstations (NOW) makes the NOW an attractive platform for parallel...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
A discrete event simulation based “on-line near-real-time” dynamic scheduling and optimization system has been conceptualized, designed, and developed to optimize cycle time and asset utilization...
DETERMINING A WARM-UP PERIOD FOR A TELEPHONE NETWORK ROUTING SIMULATION (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Christopher W. Zobel
We present a new approach to determining the warm-up period for steady-state simulation of telephone traffic. The underlying simulation model captures the sophisticated interactions that determine...
ABSTRACT TACTICAL LOGISTICS AND DISTRIBUTION SYSTEMS (TLOADS) SIMULATION (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, David J. Parsons
In response to changing threats from opposing forces that often result from use of enhanced technology, U.S. forces must adopt new tactics, employing appropriately upgraded delivery equipment to...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, John Tufarolo, Jeff Nielsen, ...
A project is currently underway which involves testing a distributed system − the Run Time Infrastructure (RTI) component of the High Level Architecture (HLA). As part of this effort, a test suite...
Discrete Manufacturing and Processing Operations. (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Charles H. White, Bing W. Tsai
Discrete Manufacturing plants produce products such as automobiles, airplanes, refrigerators, toasters, computers, and such ‘discrete ’ products often have quite large workforces relative to...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Quasi-monte Carlo, Via Linear, ...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
MODULAR SIMULATION ENVIRONMENTS: AN OBJECT MANAGER BASED ARCHITECTURE To perform a simulation project, simulationists employ simulation specific software tools, general purpose software tools, and...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Gary E. Horne
MANEUVER WARFARE DISTILLATIONS: ESSENCE NOT VERISIMILITUDE When should we engage the enemy directly and when should we maneuver? Of course, the answer depends on the circumstances and the simulations...
ABSTRACT VALIDATING SIMULATION MODEL CYCLE TIMES AT SEAGATE TECHNOLOGY (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Navdeep S. Grewal, Alvin C. Bruska, ...
This paper describes the validation of cycle times in a factory simulation model of a new Recording Head Wafer manufacturing facility at Seagate Technology, Minneapolis, MN. The project goals were to...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, K. Preston White
We review progress on a project to evaluate prospective operations in a semiconductor wafer fab that employs nextgeneration, proximity X-ray lithography to pattern the critical dimensions of computer...
ABSTRACT SIMULATING A NONSTATIONARY POISSON PROCESS USING BIVARIATE THINNING: (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, K. Preston White
We present a case study in which thinning is applied to simulate time-varying arrivals at a consumer electronics store. The underlying simulation was developed to support an analysis of new staffing...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
ADVANCED INPUT MODELING FOR SIMULATION EXPERIMENTATION We discuss ideas useful to simulation practitioners when specifying the probability models used to represent stochastic behavior. Emphasis is on...
ABSTRACT USING ADAPTIVE AGENTS IN JAVA TO SIMULATE U.S. AIR FORCE PILOT RETENTION (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
The retention of skilled pilots is a problem that plagues the United States Air Force. After spending millions of dollars on training and education, it is disheartening to see the mass exodus of...
The North Atlantic Treaty Organization (NATO) has (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Richard A. Briggs
developed and adopted a Modeling and Simulation Master Plan that provides guidance for the establishment of a NATO M&S capability. While organizational and procedural details are being developed,...
ABSTRACT STATISTICAL METHODS FOR SENSITIVITY AND PERFORMANCE ANALYSIS IN COMPUTER EXPERIMENTS (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Leslie M. Moore
We describe statistical methods for sensitivity and performance analysis of complex computer simulation experiments. Graphical methods, such as trellis plots, are suggested for exploratory analysis...
“MODEL, THEN BUILD”: A MODERN APPROACH TO SYSTEMS DEVELOPMENT USING CSIM18 (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Developing a behavioral model of a system prior to implementing that system provides significant benefits. In some cases, errors in the design can be detected and corrected prior to implementation....
ABSTRACT ITERATIVE RANKING-AND-SELECTION FOR LARGE-SCALE OPTIMIZATION (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Sigurdur Ólafsson
We develop a new algorithm for simulation-based optimization where the number of alternatives is finite but very large. Our approach draws on recent work in adaptive random search and from...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Mark W. Isken
Computer simulation is a useful tool for addressing resource allocation problems in outpatient obstetrical clinics. We present a general framework for modeling such clinics for the purpose of...
APPLICATION OF SIMULATION IN TRENCHLESS RENEWAL OF UNDERGROUND URBAN INFRASTRUCTURE (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Pipe bursting is a type a of trenchless technology that enables the construction, rehabilitation, or replacement of underground urban infrastructure with minimal disruption to surface activity. This...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
EVALUATING THE PROBABILITY OF A GOOD SELECTION We present a two-stage experiment design for use in simulation experiments that compare systems in terms of their expected (long-run average)...
ABSTRACT CSCAT: THE COMPAQ SUPPLY CHAIN ANALYSIS TOOL (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Ricki G. Ingalls
In today’s business environment, the dynamics of the business drive many decisions in the supply chain. Companies will buffer inventory, carry excess capacity and headcount, and have costly...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
THE USE OF SIMULATION IN PROCESS REENGINEERING EDUCATION The purpose of this paper is to show how simulation technology can serve as an effective educational tool to enhance the learning of process...
ABSTRACT WHO SERVES WHOM? DYNAMIC RESOURCE MATCHING IN AN ACTIVITY-SCANNING SIMULATION SYSTEM (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Photios G. Ioannou
This paper presents an activity-scanning simulation model for the familiar barbershop problem where customers have favorites, barbers may not show up for work, and customers may get impatient and...
ABSTRACT JAVA-BASED SIMULATION OF CONSTRUCTION PROCESSES USING SILK (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Anil Sawhney, Jayachandran Manickam, ...
The modeling and analysis of construction processes is gaining recognition in the construction industry. Recent developments such as object-oriented modeling, Petri Netbased simulation, and...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
ENHANCING SIMULATION MODELS FOR EMERGENCY ROOMS USING VBA Increased pressure to control costs and increased competition has prompted health care managers to look for tools to effectively operate...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
This paper follows-on papers presented at the two previous WSC conferences on sensitivity of output measures to input distribution selection in queueing modeling. Here, a real situation is studied,...
ABSTRACT AN ASYMPTOTIC ALLOCATION FOR SIMULTANEOUS SIMULATION EXPERIMENTS (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Hsiao-chang Chen
In this paper, we consider the allocation of a fixed total number of simulation replications among competing design alternatives in order to (i) identify the best simulated design, (ii) intelligently...
INCREASING FIRST PASS ACCURACY OF AMHS SIMULATION OUTPUT USING LEGACY DATA ABSTRACT (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Scott Wu, John Rayter, ...
The operating characteristics of wafer production facilities are extremely dynamic, driven by short product life cycles, rapid equipment obsolescence and recurring layout expansion. These factors...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
The paper outline the evolution of container terminal requirements for simulation and the potential of new advanced techniques in the integration with these aspects; the authors present application...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Matthew Rohrer
Whether designing a new system or modifying an existing one, engineers want to take the guesswork out of finding the best possible solution. While there are many analysis methods for designing...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
This paper describes a networked simulation application using HLA (The High Level Architecture) and MODSIM III, a commercial off-the-shelf (COTS) object-oriented simulation language. The Department...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
STEPS TO IMPLEMENT BAYESIAN INPUT DISTRIBUTION SELECTION There are known pragmatic and theoretical difficulties associated with some standard approaches for input distribution selection for...
A PRACTICAL MODULE-BASED SIMULATION MODEL FOR TRANSSHIPMENT-INVENTORY SYSTEMS (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Soemon Takakuwa
A method of modeling transshipment-inventory systems is proposed in an attempt to describe the systems flexibly in which a lot of kinds of items are ordered to transport and transship, transported,...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
This tutorial gives an introduction to parallel and distributed simulation systems. Issues concerning the execution of discrete-event simulations on parallel and distributed computers either to...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Theodora Ivanova
The focus of the paper is on the comparison of results obtained using and not using group screening in an experimental design methodology applied to a semiconductor manufacturing simulation model. A...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
ALPHA/Sim is a general-purpose, discrete-event simulation tool. ALPHA/Sim allows a user to graphically build a simulation model, enter input data via integrated forms, execute the simulation model,...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
ICONIC ANIMATION OF CONSTRUCTION SIMULATION This paper presents a continuous research effort the animation function in the development of the Activity-Based Construction (ABC) modeling and simulation...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Simulation models can be used as the objective function and/or constraint functions in optimizing stochastic complex systems. This tutorial is not meant to be an exhaustive literature search on...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
It is argued that the two principal components of simulating earthmoving operations are modeling and providing input data. The knowledge and proficiency in modeling has been substantially improved...
ABSTRACT OPTIMIZATION OVER DISCRETE SETS VIA SPSA (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, László Gerencsér
A fixed gain version of the SPSA (simultaneous perturbation stochastic approximation) method for function minimization is developed and the error process is characterized. The new procedure is...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Sandeep Juneja, Perwez Shahabuddin
Consider the problem of estimating the small probability that the maximum of a random walk exceeds a large threshold, when the process has a negative drift and the underlying random variables may...
MULTITRAJECTORY SIMULATION PERFORMANCE (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, John B. Gilmer, Frederick J. Sullivan
Multitrajectory Simulation allows random events in a simulation to generate multiple trajectories, a technique called "splitting", with explicit management of the set of trajectories. The...
Crown Health Enterprises. Current and future contracts (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Shane G. Henderson, Andrew J. Mason
New Zealand (St Johns) supplies ambulance services to
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Fred Glover, James P. Kelly, ...
NEW ADVANCES FOR WEDDING OPTIMIZATION AND SIMULATION Many real world problems in optimization are too complex to be given tractable mathematical formulations. Multiple nonlinearities, combinatorial...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
SLX is Wolverine Software’s “next generation ” simulation language. SLX stands for Simulation Language with Extensibility. SLX provides an inverted pyramid of layers which range from its C-like...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Michael E. Kuhl
Nonhomogeneous Poisson processes (NHPPs) are frequently used in stochastic simulations to model nonstationary point processes. These NHPP models are often constructed by estimating the parameters of...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Michael Norman, Deron Tinsley, ...
PROCESS AND MATERIAL HANDLING MODELS INTEGRATION AutoSimulations has developed and applied a new method of integrating separate models of manufacturing process and material handling systems that...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. Simulation, T. Sturrock, G. W. Evans
SIMULATION: TECHNOLOGIES IN THE NEW MILLENNIUM This paper first addresses future simulations needs from a generic point of view and then from the viewpoint of major stakeholders within the simulation...
ABSTRACT INSIDE DISCRETE-EVENT SIMULATION SOFTWARE: HOW IT WORKS AND WHY IT MATTERS (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Thomas J. Schriber
This paper provides simulation practitioners and consumers with a grounding in how discrete-event simulation software works. Topics include discrete-event systems; entities, resources, control...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Katherine Miller
This paper describes how simulation was used for business case benefits and return on investment (ROI) projection for the procurement and rollout of a new call routing technology to 25 call centers....
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Christopher D. Carothers
State-saving and reverse computation are two different approaches by which rollback is realized in Time Warp-based parallel simulation systems. Of the two approaches, statesaving is, in general, more...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
DEFINING A BETA DISTRIBUTION FUNCTION FOR CONSTRUCTION SIMULATION In most applications of simulation to construction, the underlying Probability Distribution Function (PDF) is generally unknown....
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
THE PHANTOM SPA METHOD: AN INVENTORY PROBLEM REVISITED It is widely accepted today that the Infinitesimal Perturbation Analysis (IPA) method for estimating sensitivities is the preferred method, when...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
This paper discusses how simulation is used to design new manufacturing systems and to improve the performance of existing ones. Topics to be discussed include: manufacturing issues addressed by...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
SIMULATION AS A TOOL FOR CONTINUOUS PROCESS IMPROVEMENT Simulation offers a powerful tool to support the continuous improvement process. This paper presents a description of the tools of lean...
ABSTRACT OPTIMIZATION VIA ADAPTIVE SAMPLING AND REGENERATIVE SIMULATION (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Sigurdur Ólafsson
We investigate a new approach for simulation-based optimization that draws on two recent stochastic optimization methods: an adaptive sampling approach called the nested partitions method and ordinal...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Marcos Ribeiro, Pereira Barretto, ...
is an algorithm based on a simulated annealing algorithm (SA), a relatively recent algorithm for solving hard combinatorial optimization problems. The LEO algorithm was successfully applied to a...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
HIERARCHICAL MODELING AND MULTIRESOLUTION SIMULATION As systems become more complex, the need to explicitly account for uncertainty during modeling and simulation grows. The interactions between...
MODELING IN A SUCCESSFUL (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Averill M. Law, Michael G. Mccomas
EXPERTFIT: TOTAL SUPPORT FOR SIMULATION INPUT MODELING In this paper, we discuss the critical role of simulation input modeling in a successful simulation study. Two pitfalls in simulation input...
REGRESSION METAMODELLING IN SIMULATION USING BAYESIAN METHODS (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Takayuki Takagi
We consider to apply the perturbation analysis (PA) to a single-server queue with multiple server vacations. A major difficulty in the implementation of PA estimator for such queueing systems is that...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
THE ARENA PRODUCT FAMILY: ENTERPRISE MODELING SOLUTIONS Organizations throughout the world are quickly moving to adopt process modeling and simulation as an integral part of their business...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Logic tools from the Theory of Constraints (TOC) provide the ability to descriptively characterize the entity relationships responsible for a typical, although somewhat chaotic, manufacturing...
ABSTRACT USE OF DYNAMIC SIMULATION TO ANALYZE STORAGE AND RETRIEVAL STRATEGIES (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Mark A. Kosfeld, Timothy D. Quinn
In the second half of 1998, shipment volumes at one of Intel’s warehouses had increased beyond the storage and retrieval capabilities of the facility. An engineering improvement team began studying...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
AN EXAMPLE OF SIMULATION USE IN ARMY WEAPON SYSTEM DEVELOPMENT The use of modeling and simulation in the development of military weapon systems began to expand several years ago as the costs of...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
We present a brief overview of several of the basic output analysis techniques for evaluating stochastic dynamic simulations. This tutorial is intended for those with little previous exposure to the...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
ABSTRACT EFFICIENCY IMPROVEMENTS FOR PRICING AMERICAN OPTIONS (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, A Stochastic Mesh
We develop and study general-purpose techniques for improving the efficiency of the stochastic mesh method that was recently developed for pricing American options via Monte Carlo simulation. First,...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
THE MODELLING OF TACTICS AND PROCEDURES USING A COMPONENT BASED SYSTEM The development of tactics or procedures is a multistage, iterative process from the initial concept to their use by operational...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Chad D. Dejong, Thomas Jefferson
MODELING LOT ROUTING SOFTWARE THROUGH DISCRETE-EVENT SIMULATION Intel has recently developed lot routing tools that can theoretically minimize local and overall lot movement. These developments were...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
This document presents an overview of the Extend modeling environment. Extend is a general-purpose, graphically-oriented, discrete event and continuous simulation application with an integrated...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
The purpose of this paper is to describe several recent applications of enterprise simulation. An enterprise simulation is a simulation which is constructed with a topdown view of a business...
ANALYSIS AND SIMULATION OF PASSENGER FLOWS IN AN AIRPORT TERMINAL (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Michel R. Gatersleben
As human behavior is often thought to be hard to define in models, simulations of processes with people involved are less common than industrial simulations. Nevertheless simulation has been very...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
STOCHASTIC OPTIMIZATION AND THE SIMULTANEOUS PERTURBATION METHOD Multivariate stochastic optimization plays a major role in the analysis and control of many real-world systems. In almost all...
DETERMINATION OF OPERATING ROOM REQUIREMENTS USING SIMULATION (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, In Brigham
initiated a construction project to renovate its existing surgical suite to include 32 operating rooms--two less than the current number. The new suite would be used for performing primarily...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Susumu Morito
We present in this paper a general framework for a combined optimization/simulation approach where constraints to be satisfied are identified from results of simulation evaluation of the proposed...
SCALING, HIERARCHICAL MODELING, AND REUSE IN AN (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Three useful modeling techniques for specifying discrete event simulation models are discussed. Hierarchical model specification provides for model specification at different levels of abstraction....
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
AN INVESTIGATION OF OUT-OF-CORE PARALLEL DISCRETE-EVENT SIMULATION In large-scale discrete-event simulations the size of a computer’s physical memory limits the size of system system to be...
A GLOBAL SYNCHRONIZATION NETWORK FOR A NON-DETERMINISTIC SIMULATION ARCHITECTURE (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Our previous work presented methods of accelerating nondeterministic discrete event simulation at the processing element level. Here, two algorithms are proposed for synchronizing a network of...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Gül Gürkan, A. Yonca, ...
Recently sample-path methods have been successfully used in solving challenging simulation optimization and stochastic equilibrium problems. In this paper we deal with a variant of these methods to...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
A TUTORIAL ON SIMULATION IN HEALTH CARE: APPLICATIONS AND ISSUES Simulation is an ideal tool for addressing wide ranging issues in health care delivery. These issues involve public policy, patient...
ABSTRACT SIMULATION MODELING AS AN AID TO DECISION-MAKING IN HEALTHCARE (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
This paper presents simulation modeling as a decision support technique and suggests that it can be a useful for understanding problems related to health care, Randomized Clinical Trials in this...
NETWORK SIMULATIONS WITH OPNET (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Xinjie Chang
Several computer network simulators are compared. One of the most powerful software simulation package-OPNET is introduced in detail. The implementation details of the network models in OPNET are...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
automotive parts call for assemblies to be produced to tolerances that cannot be economically reached using standard high volume machining practices. Shims are used instead. We show that the required...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
A fully integrated modeling and analysis toolkit, which facilitates multi-perspective knowledge capturing, sharing and reusing, is necessary for today's enterprises to meet the challenges of the...
SIMPHONY: AN ENVIRONMENT FOR BUILDING SPECIAL PURPOSE CONSTRUCTION SIMULATION TOOLS (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Special Purpose Simulation (SPS) is a proven principle that can lead to the effective transfer of simulation knowledge to the construction industry. Three separate industry experiments have led to...
ABSTRACT EFFICIENT SIMULATION OF A TANDEM JACKSON NETWORK (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Dirk P. Kroese
In this paper we consider a two-node tandem Jackson network. Starting from a given state, we are interested in estimating the probability that the content of the second buffer exceeds some high level...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
CRITICALITY OF DETAILED MODELING IN SEMICONDUCTOR SUPPLY CHAIN SIMULATION Supply chain management offers a large potential for organizations to reduce costs and improve customer service performance....
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
INPUT MODELS FOR SYNTHETIC OPTIMIZATION PROBLEMS In this paper, we describe and discuss alternative input models for the coefficients in synthetic optimization problems. Synthetic, or randomly...
DESIGNING THE WESTERSCHELDETUNNEL TOLL PLAZA USING A COMBINATION OF QUEUEING AND SIMULATION (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Mark D. Hermans, ...
This paper describes how a combined queueing and simulation study was successfully executed for the design of a toll plaza. The objectives of the study were twofold: • to configure the types of...
A DECISION-THEORETIC APPROACH TO SCREENING AND SELECTION WITH COMMON RANDOM NUMBERS (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
This article describes some recently-proposed procedures that identify the best simulated system when common random numbers are used. The procedures are based on a Bayesian average-case analysis,...
ABSTRACT DEVELOPMENT OF A SIMULATION MODEL FOR AN ARMY CHEMICAL MUNITION DISPOSAL FACILITY (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Michael A. Berger, Jiuyi Hua, ...
The U.S. Army is in the process of disposing of its stockpile of obsolete chemical weapons. A simulation model has been developed to help identify facility operational strategies that may increase...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, William S. Murphy, Michael L. Roane
The Analysis Federate is a general purpose High Level Architecture (HLA) data collection, analysis, and visualization tool that was developed by the U.S. Army TRADOC Analysis Center in Monterey. The...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Siroos Sokhan-sanj, Gabriel Gaxiola
Variability in any manufacturing process negatively impacts performance since it leads to system disruption. Semiconductor manufacturing, with its characteristic reentrant flow, typically experiences...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
GPSS/H is a traditional simulation language that is well known for its speed and dependability. In GPSS/H, the process-interaction world view has been combined with many advanced features to make an...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
THREE SOURCES OF SIMULATION INACCURACY (AND HOW TO OVERCOME THEM) There is much interest in how to ensure that the results obtained from a simulation model are accurate. This paper considers this...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Matt Hickie
Simulation can often be one of the first modeling tools implemented at a manufacturing site. When this occurs, much effort must be used to get current manufacturing data into the simulation model....
SIMULATION IN AN OBJECT-ORIENTED WORLD (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Jeffrey A. Joines, Stephen D. Roberts
An object-oriented simulation (OOS) consists of a set of objects that interact with each other over time. This paper provides a presentation of OOS design elements by contrasting OOS with its...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
We present a general construction kit for empirical tests of pseudorandom number generators which comprises a wide range of well-known standard tests. Within our setup we identify two important...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
In this paper, we present CONLOAD (CONstant LOAD), a new lot release rule for wafer fabs. It was developed to overcome some performance problems of traditional lot release rules like CONWIP or...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Manfred Mittler
In this paper, we present a comparison of five dispatching rules that aim to reduce the mean and the variance of cycle times. The performance of the dispatch rules is evaluated using simulation...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Catherine M. Harmonosky, Mark T. Traband, ...
Often companies are faced with the situation of “rampingup” production of a new product. Although this may seem like it should be a simple task, making the transition from a manufacturing...
ABSTRACT IMPROVED BATCHING FOR CONFIDENCE INTERVAL CONSTRUCTION IN STEADY-STATE SIMULATION (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Natalie M. Steiger
We describe an improved batch-means procedure for building a confidence interval on a steady-state expected simulation response that is centered on the sample mean of a portion of the corresponding...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Lee A. Belfore
A virtual reality modeling language (VRML) based application has been developed as a marketing tool for a commercial park. VRML is a new web based technology for specifying and delivering...
Proceedings of the 1999 Winter Simulation Conference (2009)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
DATABASE ORIENTED MODELING WITH SIMULATION MICROFUNCTIONS This paper presents an approach towards building a flexible modeling and simulation environment with database technologies. The main problem...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
AN INVESTIGATION OF OUT-OF-CORE PARALLEL DISCRETE-EVENT SIMULATION In large-scale discrete-event simulations the size of a computer’s physical memory limits the size of system system to be...
DISTRIBUTED REAL-TIME SIMULATION FOR INTRUDER DETECTION SYSTEM ANALYSIS (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G W. Evans, Jeffrey S. Smith, Brett A. Peters, ...
This paper describes a distributed simulation system developed for evaluation of physical security systems. The work extends previous work by extracting several system components that were previously...
INTEGRATING DISCRETE-EVENT SIMULATION WITH STATISTICAL PROCESS CONTROL (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Charts For, Transitions In, ...
We present a model that integrates real-time process control charting with simulation modeling to illustrate the effects and benefits of SPC charts for quality improvement efforts. The integrated...
ABSTRACT DESIGNING SIMULATION EXPERIMENTS (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, W. David Kelton
This tutorial introduces some of the ideas, issues, challenges, solutions, and opportunities in deciding how to experiment with a simulation model to learn about its behavior. Careful planning, or...
SIMULATING THE ECONOMIC VIABILITY OF CRAWFISH PRODUCTION: A TWO-STAGE APPROACH (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Amy C. Hasegawa, Conrad M. Gempesaw, ...
The purpose of this study is to determine if raising eastern white river crawfish (Procambarus acutus acutus) in the Mid-Atlantic region year-round is economically feasible. The possibility for...
ABSTRACT A SIMULATION APPROACH FOR IMPROVING THE EFFICIENCY OF THE DEPARTMENT OF (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Yasser Dessouky, Brian Senkandwa
was analyzed to determine improvement methods that would curtail the long customer lines or queues that are prevalent. A 2 3 factorial experimental design was performed to improve overall system...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
To enable longer space missions, systems for production of food in space will be necessary. The Autonomous Life Support System (ALSS) program of NASA is an on-going research effort in this direction....
TALUS – AN OBJECT ORIENTED AIR COMBAT SIMULATION (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Darius Rohan
MACHINE DEDICATION UNDER PRODUCT AND PROCESS DIVERSITY Increased product and process diversity in semiconductor manufacturing line has confronted the operations managers with the challenge of...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
CONSTRUCTION OF A DAM EMBANKMENT WITH NONSTATIONARY QUEUES This paper presents the simulation model for a project involving the haulage and placement of rip-rap for the construction of a dam to...
SPECIAL PURPOSE SIMULATION TEMPLATE FOR UTILITY TUNNEL CONSTRUCTION (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Simaan M. Abourizk, Janaka Y. Ruwanpura
Utility construction projects have great opportunities for simulation applications in construction. This paper describes the special purpose tunneling simulation template developed based on the...
DEVELOPING INTEREST MANAGEMENT TECHNIQUES IN DISTRIBUTED INTERACTIVE SIMULATION USING JAVA (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Bandwidth consumption in distributed real-time simulation, or networked real-time simulation, is a major problem as the number of participants and the sophistication of joint simulation exercises...
ABSTRACT DETERMINING OPTIMAL LOT-SIZE FOR A SEMICONDUCTOR BACK-END FACTORY (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Juergen Potoradi, Gerald Winz
Modeling analysts are using a methodology that applies queuing theory logistics laws and simulation to factory performance analysis. These methods are being applied at semiconductor back-end...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Steven D. Farr, Jason A. Moore
WEB-BASED SIMULATION VISUALIZATION USING JAVA3D The coupling of Java3D and applet technologies has the potential to revolutionize web-based simulation visualization. Applets can enable the dynamic...
DISTRIBUTED SUPPLY CHAIN SIMULATION IN A DEVS/CORBA EXECUTION ENVIRONMENT (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Bernard P. Zeigler
The emerging electronic commerce and rapidly changing business environments place strong requirements on a next-generation supply-chain analyzer to simulate the flow of goods through the entire...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Jennifer K. Robinson
Planning capacity for wafer fabrication is complicated by time constraints between process steps. For example, if certain baking operations are not started within two hours of a prior cleaning then...
ABSTRACT SIMULATION MODELING AND OPTIMIZATION USING PROMODEL (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Rochelle N. Price, Charles R. Harrell
The ProModel Optimization Suite is a powerful yet easyto-use simulation tool for modeling all types of manufacturing systems ranging from small job shops and machining cells to large mass production,...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
This paper describes two simulation experiments using a model of a real medium sized multi-product semiconductor chip fabrication facility. The results presented clearly show the corrupting influence...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
GENERAL-PURPOSE CONCURRENT AND POST-PROCESSED ANIMATION WITH PROOF™ Proof Animation ™ is a family of products for animating discrete event simulations. Proof is available in a variety of...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
This paper looks into the future of simulation. The capabilities and features of simulation software of the future are hypothesized focusing on the major aspects of their use. The features addressed...
ABSTRACT APPLICATION OF SIMULATION AND THE BOEHM SPIRAL MODEL (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Jerry Weckman, Theron Colvin, ...
Building on the lessons learned from the 150-mm-to 200mm transition in semiconductor manufacturing, much work has gone into the planning and development of 300-mm fabs. Examples of this include the...
ABSTRACT SCENARIO MANAGEMENT IN WEB-BASED SIMULATION (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Andrew F. Seila
Internet communications in general and the World-Wide Web specifically are revolutionizing the computer industry. Today, the Web is full of important documents and clever applets. Java applets and...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Philip L. Campbell, Darius Rohan
Semiconductor factories are very expensive to build and operate. It is critical to understand how to design and operate them efficiently. We describe a simulation model of a planned 300mm wafer...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
In this paper we describe a class of algorithms for approximating the global minimum of a function defined on a subset of d-dimensional Euclidean space. The algorithms are based on adaptively...
USING DISCRETE-EVENT SIMULATION TO MODEL HUMAN PERFORMANCE IN COMPLEX SYSTEMS (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
System performance is often determined by the performance of the humans in the system. Yet, system models often leave out any significant representation of the humans that are operating and...
A SIMULATION MODEL TO STUDY THE DYNAMICS IN A SERVICE-ORIENTED SUPPLY CHAIN ABSTRACT (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Edward G. Anderson
In this paper, we investigate the dynamic behavior of a simple service-oriented supply chain in the presence of non-stationary demand using simulation. The supply chain contains four stages in...
PRODUCT – BASED MODEL REPRESENTATION FOR INTEGRATING 3D (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Computer Simulation
Computer-Aided Design (CAD) is widely used during the engineering design stage of construction projects. CAD generally contains a wealth of information regarding the facility to be constructed; this...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Hatem Ben Ameur, École Hautes, ...
3000, chemin de la Côte-Ste-Catherine
ABSTRACT REDUCING MODEL CREATION CYCLE TIME (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Igor Paprotny, Conversion Of, ...
Simulation is a popular tool for accurately estimating the performance of an automated material handling system (AMHS). Accuracy of the model is normally dependent on a detailed description of the...
ABSTRACT WEB-BASED PERFORMANCE VISUALIZATION OF DISTRIBUTED DISCRETE EVENT SIMULATION (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Adel S. Elmaghraby, Sherif A. Elfayoumy, ...
This paper reports on an effort to adapt an existing distributed simulation visualization system to become Web accessible. The system was originally developed for performance visualization and...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Thomas Schulze, Steffen Straßburger
Architecture for Modeling and Simulation (HLA) provides a standardized interface for distributed simulations. The recent advent of HLA has greatly increased interest in the use of distributed,...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Modeling a simulation system requires a great deal of customization. At first sight no system seems to resemble exactly another system and every time a new model has to be designed the modeler has to...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
VALIDATION AND VERIFICATION OF SIMULATION MODELS ∗ This paper discusses validation and verification of simulation models. The different approaches to deciding model validity are presented; how...
ABSTRACT THE EXCLUSION ZONE MODEL – A DEVELOPMENT METHODOLOGY (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Paul Rendell, Ha Ep
This paper describes the application of prototyping and rapid development techniques to the support of real Operations when meeting a specific military requirement. The Exclusion Zone Model (EZM) has...
ABSTRACT EVALUATING THE POTENTIAL BENEFITS OF A RAIL TRAFFIC MOVEMENT PLANNING ALGORITHM (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Paul M. Julich, Charles G. Martin, ...
Railroads have large investments in capital items such as track, trains, and terminals. Optimizing the use of their resources has the potential of enormous payback. Precision Train Control ™ (PTC)...
SIMULATING THE ECONOMIC VIABILITY OF CRAWFISH PRODUCTION: A TWO-STAGE APPROACH (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Amy C. Hasegawa
The purpose of this study is to determine if raising eastern white river crawfish (Procambarus acutus acutus) in the Mid-Atlantic region year-round is economically feasible. The possibility for...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Sungmin Park, ...
Photolithography is often the constraining equipment in semiconductor wafer fabrication plants due to the number of times the product must process through it. Modern day photolithography is performed...
ABSTRACT DESIGNING SIMULTANEOUS SIMULATION EXPERIMENTS (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Paul Hyden
Simulation experiments are often designed assuming that a fixed, and known, computing budget is to be allocated sequentially among different alternatives. However, in actual simulation experiments,...
ABSTRACT USING INPUT PROCESS INDICATORS FOR DYNAMIC DECISION MAKING (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Michael Freimer
In a continually changing environment, a simulation study that integrates the activities of data collection, model analysis, and decision making has some distinct advantages. In this paper we look at...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Along with marketing and maintenance implications, hub optimization is an important part of the flight schedule development process. The Air Canada flight schedule at its Toronto hub is based on...
OPTIMAL ATTENDING PHYSICIAN STAFFING SCHEDULES (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Manuel D. Rossetti
Efficient allocation and utilization of staff resources is an important issue facing emergency department (ED) administrators. Increased pressure from competition, heath care reform, reimbursement...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Andrew L. Adams, James S. Koopman
The analysis, surveillance, and control of infectious diseases are important functions of public health organizations around the world. This article describes the design and implementation of...
HUMAN PERFORMANCE SIMULATION IN THE ANALYSIS OF ADVANCED AIR TRAFFIC MANAGEMENT (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Models of human performance in large scale and complex systems have long served to engineers in prediction of system performance. They have also been used to identify performance shortfalls in the...
FEDEP V1.4: AN UPDATE TO THE HLA PROCESS MODEL (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Robert Lutz
Architecture (HLA) for modeling and simulation (M&S) was developed as a means of facilitating interoperability among simulations and promoting reuse of simulations and their components. Although...
ABSTRACT ANALYSIS OF ELECTRONICS ASSEMBLY OPERATIONS: (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Kurt G. Springfield, Longbow Hellfire, ...
This paper describes the use of discrete event simulation and design of experiments to analyze and improve electronics assembly operations. A study was performed to determine if proposed changes to...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Paul A. Fishwick
A HYBRID VISUAL ENVIRONMENT FOR MODELS AND OBJECTS Models and objects that are modeled are usually kept in different places when we consider most modern simulation software packages. Software that...
THE DEVELOPMENT OF A METHODOLOGY FOR THE USE OF (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
In this paper the use of metamodels to approximate the reverse of simulation models is explored. This purpose of the approach is to achieve the opposite of what a simulation model can do. That is,...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
The paper presents a methodology for incremental development of large discrete-event simulation models. The proposed methodology has evolved during a project performed in collaboration with BT...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Young Hae Lee
This paper deals with a discrete simulation optimization method for designing a complex probabilistic discrete event system. The proposed algorithm in this paper searches the effective and reliable...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Intelligent controllers usually consist of a hybrid system that includes both discrete and continuous processes. This hybrid construction poses difficulties in validating and verifying their design....
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
In this paper, we present an approach to generate optimal processing sequences of lots at cluster tools. We consider the problem of sequencing n lots, where each lot can be processed by any of m...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
As industrial manufacturing and automation systems grow in complexity, there is a need for control software engineering support. Soft-Commissioning and Reality in the Loop (RIL) are two novel...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, James R. Swisher
Discrete-event simulation models are often constructed so that an analyst may compare two or more competing design alternatives. This paper presents a survey of the literature for two widely-used...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
AweSim ® is a general-purpose simulation system which takes advantage of the latest in Windows ® technology to integrate programs and provide componentware. AweSim includes the Visual SLAM ®...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, José R. Gallardo, Dimitrios Makrakis
A technique for the fast simulation of broadband communications systems is proposed, which is based on regenerative Importance Sampling techniques. Our algorithm is applicable to estimate the...
MODELING LEADERSHIP EFFECTS AND RECRUIT TYPE IN AN ARMY RECRUITING STATION (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Edward L. Mclarney, J. O. Miller, ...
Army recruiters have an uphill battle recruiting wellqualified volunteers into military service. With a prospering economy, there are many alternatives to joining the military, and all services are...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Douglas J. Morrice, John Butler
In this paper, we conduct sensitivity analysis on a ranking and selection procedure for making multiple comparisons of systems that have multiple performance measures. The procedure combines multiple...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. Sturrock, G. W. Evans
CONSTRUCTION OF A DAM EMBANKMENT WITH NONSTATIONARY QUEUES This paper presents the simulation model for a project involving the haulage and placement of rip-rap for the construction of a dam to...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Michael E. Kuhl
Nonhomogeneous Poisson processes (NHPPs) are frequently used in stochastic simulations to model nonstationary point processes. These NHPP models are often constructed by estimating the parameters of...
ABSTRACT A RANKING AND SELECTION PROJECT: EXPERIENCES FROM AUNIVERSITY-INDUSTRY COLLABORATION (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, David Goldsman, Tracy Opicka
We describe the experiences and results from a long-term collaboration between two universities and Pritsker Corporation on a grant funded by the National Science Foundation. The goal of the joint...
ABSTRACT A WIDELY DEPLOYABLE WEB-BASED NETWORK SIMULATION FRAMEWORK (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Using Corba, Idl-based Apis, ...
Web-based network simulation frameworks are becoming highly portable and extensible. However, they still lack the degree of language and platform independence required for large-scale deployment on...
ABSTRACT WHAT DOES INDUSTRY NEED FROM SIMULATION VENDORS IN Y2K AND AFTER? (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, A Panel Discussion
Panelists respond to the question, “What does industry need from simulation vendors in Y2k and after? ” The panelists include software vendors, simulation modelers from industry, simulation...
RECONCILIATION OF BUSINESS AND SYSTEMS MODELLING VIA DISCRETE EVENT SIMULATION (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, George M. Giaglis, Ray J. Paul, ...
Modeling techniques have been productively applied to Business Process (BP) redesign. They have been also successfully employed to assist Information Technology (IT) applications design and...
Proceedings of the 1999 Winter Simulation Conference (2008)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Jerry Banks
This introduction begins with an example of simulation done by hand. Modeling concepts in simulation are then introduced based on the example. Next, the advantages and disadvantages of simulation are...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, William E. Biles
This paper describes a Java-based system for allocating simulation trials to a set of P parallel processors for carrying out a simulation study involving direct-search optimization or response...
Proceedings of the 1999 Winter Simulation Conference (2007)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
The conduct of Operations Other Than War (OOTWs) has become an extremely important part of the US military's responsibility since the end of the Cold War. The factors that influence success and...
ABSTRACT EVALUATING STRATEGIES TO IMPROVE RAILROAD PERFORMANCE-- (2007)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Jack B. Homer, A System, ...
This paper describes the context for and creation of a strategic planning model of a major U.S. railway. The key factors in choosing a system dynamics approach are presented, and the synergy between...
eSCA: A THIN-CLIENT/SERVER/WEB-ENABLED SYSTEM FOR (2007)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
THE USE OF SIMULATION FOR PROCESS IMPROVEMENT IN A CANCER TREATMENT CENTER (2007)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, José A. Sepúlveda, William J. Thompson, ...
This work addresses experience with a simulation model of a full service cancer treatment center. The objective was to analyze patient flow throughout the unit, evaluate the impact of alternative...
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Tools for project scheduling, such as Gantt charts and PERT/CPM networks, have existed for some time. However, these tools have significant shortcomings for settings characterized by constrained...
Proceedings of the 1999 Winter Simulation Conference (2007)
Farrington Nembhard Sturrock, P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
A critique of federated modeling and simulation (M&S) and the HLA approach is given from an external perspective. Recognized difficulties and the progress toward overcoming them are described....
Proceedings of the 1999 Winter Simulation Conference (2007)
Farrington Nembhard Sturrock, P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
The web presents an opportunity for realizing a distributed design framework supporting multi-disciplinary, multi-organizational collaborative design and analysis activities. The potential for...
Proceedings of the 1999 Winter Simulation Conference (2007)
Farrington Nembhard Sturrock, P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Marelys L. Garcia
On-time delivery of the paper is critical in the newspaper industry since it is directly related to the quality of service; therefore, it enhances or damages sales. This study was focused on...
Proceedings of the 1999 Winter Simulation Conference (2007)
Farrington Nembhard Sturrock, P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Zsolt Haraszti
Rare event simulation using splitting has been shown to provide significant speed-up for large classes of problems, especially when queue length distribution is of primary interest. However, choice...
Proceedings of the 1999 Winter Simulation Conference (2007)
Farrington Nembhard Sturrock, P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
We briefly describe genetic algorithms (GAs) and focus attention on initial population generation methods for twodimensional knapsack problems. Based on work describing the probability a random...
ABSTRACT A WIDELY DEPLOYABLE WEB-BASED NETWORK SIMULATION FRAMEWORK (2007)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Using Corba, Idl-based Apis, ...
Web-based network simulation frameworks are becoming highly portable and extensible. However, they still lack the degree of language and platform independence required for large-scale deployment on...
Iris Tommelein, P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
Temporary facilities on construction sites are needed to support the labor force during the course of their work. Rules of thumb traditionally have been used to decide on the location and capacity of...
Panel: Strategic Directions In Simulation Research (1999)
Ernest H. Page, P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, David M. Nicol, ...
We consider the future directions of simulation research. 1 INTRODUCTION To mark the 50th anniversary of the Association for Computing Machinery, Volume 28, Number 4 of ACM Computing Surveys was...
Validation Of Models: Statistical Techniques And Data Availability (1999)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
This paper shows which statistical techniques can be used to validate simulation models, dependingonwhich real-life data are available. Concerning this availability, three situations are...
Observations On The Complexity Of Composable Simulation (1999)
Ernest H. Page, Jeffrey M. Opper, P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
We consider the issue of composability as a design principle for simulation. While component-based modeling is believed to potentially reduce the complexities of the modeling task, we describe a few...
Stratification Issues in Estimating Value-at-Risk (1999)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Paul Glasserman
This paper considers efficient estimation of value-at-risk, which is an important problem in risk management. The value-at-risk is an extreme quantile of the distribution of the loss in portfolio...
Simulation Input Modeling (1999)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans, Lawrence Leemis
Discrete-event simulation models typically have stochastic components that mimic the probabilistic nature of the system under consideration. Successful input modeling requires a close match between...
Supply chain vs. supply chain: Using simulation to compete beyond the four walls (1996)
P. A. Farrington, H. B. Nembhard, D. T. Sturrock, G. W. Evans
It has been said in this world of virtual corporations that it is no longer companies that compete, but supply chains. When you look at the model of a corporation today, the traditional vertically...