WSC

Using INSIGHT, simulation models can be built and evaluated with less time and effort than previously possible. INSIGHT defines a vocabulary for systems analysis and provides a small set of modeling symbols to represent the basic processes found in real ...

Simulation is one of the most powerful analytical tools available to managers of complex systems.

We define what simulation is and what it is not.

We will define simulation as the process of designing a model of a real system and conducting experiments ...

The introductions are intended to highlight panel members' job responsibilities as they relate to manufacturing applications of simulation. In addition, a brief outline will be given on each IBM organization represented and how the panel members fit in ...

The present paper, of a tutorial nature, relates the literature of our simulation methodology since the publication of SIMULATION: STATISTICAL FOUNDATIONS AND METHODOLOGY [Academic Press, 1972 (1970)]. Explained will be the expansion of its Principium ...

The purpose of this research is to investigate the use of Bayesian methodology in the analysis of simulation output. Specifically, the Bayesian methodology is introduced in the context of the batch means procedure for building a confidence interval for ...

A generalized semi-Markov process (GSMP) is a stochastic process description of a large class of discrete-event simulations. GSMP's are defined, and some basic properties of GSMP's are described. It is argued that GSMP's provide a convenient frame-work ...

A combined discrete-event/continuous/process-interaction simulation model has been developed to evaluate the effects of weather and supply-ship availability on off-shore drilling operations at a specified location and time of year with a specified ...

This paper describes a simulation model of the Trans-Panama Pipeline. The pipeline is used to transport crude oil between tankers in the Pacific and Atlantic Oceans. The model represents in many senses a classical queuing system, with vessel delay times ...

In this paper the use of simulation in addressing the specific needs of one oil company's tanker scheduling problem is examined. The situation is actually more involved than simply tanker scheduling. The flow of oil from the wells to the storage ...

The general problem of the representation and performance-oriented modeling of the behavior of distributed computer systems is discussed. A description of an integrated System Design/Static and Dynamic Modeling (SD/SDM) tool set is presented. In SD/SDM, ...

This paper describes how micro PASSIM, a GPSS based simulation system, was transported from the Apple II to the HP 9836. The problems associated with moving a large program form one UCSD Pascal system to another are discussed. Micro PASSIM was ...

The work described in this paper was performed by The MITRE Corporation for the System Engineering Branch of the Network Control Center Division of NASA's Goddard Space Flight Center. The objective of the work was to evaluate the adequacy of a U1100/82 ...

Summary information about key aspects of the simulation programming language GPSS is provided. The class of problems to which GPSS applies especially well is described; commentary on the semantics and syntax of the language is offered; the learning-...

In this article, we present an introduction to discrete event modeling and discuss some of the important issues related to model development. We are not talking about simulation codes nor statistical models for the outputs from such programs. Rather we ...

This panel discussion is patterned after a similar session held at the recent Annual Meeting of the Society for General Systems Research, held in Detroit (May, 1983). The objective of that panel session was to raise the level of awareness of systems ...

Methods for generating random vectors from multi- variate distributions are required in a variety of statistical research contexts. Examples of topics include examination of the robustness of multivariate tests such as Roy's largest root test, ...

Moment matching and percentile matching are the standard methods for fitting a distribution from Johnson's translation system (the S_L, S _U, S _B, and S _N families) to a univariate data set (Johnson and Kotz 1970). One method for fitting a multivariate ...

In modeling a system, identifying the times at which the state of the system changes is important. In particular, the probability distributions of the interevent times (time lengths between consecutive events) of each process (such as interarrival times)...

The Factory of the Future is possible with current hardware and software technology. It may include many different components but such manufacturing complexes must be planned, designed, and operated as coordinated systems. They will be information ...

The work presented here today is based on a simulation model of a portion of one of our stamping plants. The presentation begins by briefly describing a typical section of the stamping plant and the scheduling environment in which the plant operates. ...

The simulation of material movement, equipment location, operating and scheduling rules is a powerful tool for the design of state of the art automated manufacturing facilities. This paper describes a software system (AutoGram) that allows the designer ...

ACMS is a modeling system which translates user-supplied hardware and software descriptions into an activity network and then uses open network queueing theory approximations to estimate the time required for transactions to pass through the network. It ...

BWQUE is an interactive queueing modeling package for computer performance evaluation; similar packages are available on the market, but BWQUE have special features, e.g., more general channel configuration, class priorities to any device, etc. The ...

This tutorial will present the highlights of the SIMSCRIPT II.5 approach to building discrete event simulation models. The approach will be to construct a small example problem, implement the program in SIMSCRIPT II.5, and then to display the modularity ...

The use of a computer simulation model to learn about the system(s) under study must involve an analysis of the results from the simulation program itself. A classification of simulation types is given which provides a framework for a treatment of ...

The panelists are all actively engaged in applying simulation to a variety of systems. Their areas of application include manufacturing, electronics, steel, and health systems. The panel discussion will address issues relating to the practice of ...

The Beta-Gamma transform changes a Gamma distributed variate with shape parameter k into a Gamma variate with shape parameter q, where q is less than k. Using this transformation a scheme is given for generating negatively correlated Gamma variates, ...

Most of the early research done in random variate generation is in the area of continuous distributions. Not until 1979 was research published on exact, uniformly fast discrete univariate random variate generation. Since then the state of the art of ...

This paper presents methods to invert efficiently the distribution function of an arbitrary positive random variable. Such methods preserve the monotonic relationship between the random variable and the uniform deviate which generates it. This ...

This paper describes a GPSS model of a unit load AS/RS (automated storage and retrieval system). The paper describes the system, the model, the input data analysis, the validation of the model, and the uses made of the model. Both transient and steady-...