WSC

SIMPAS is a portable, strongly-typed, event-oriented, discrete system simulation language embedded in PASCAL. It extends PASCAL by adding statements for event declaration and scheduling, entity declaration, creation and destruction, linked list ...

One of the important capabilities offered by the General Purpose Simulation Language (GPSS) is the preemption capability. This capability is of use in modeling many real situations in which it is necessary to interrupt an ongoing activity before it ...

An algorithm for generating phase type random variates is presented. A phase type distribution is any distribution which may be that of the time until absorption in a finite state Markov process. The exponential sojourn times allow us to record only the ...

Recent work has made the generation of univariate time series for inputs to stochastic systems quite simple. The time series are all random linear combinations of i.i.d. random variables with Exponential, Gamma and hyperexponential marginal ...

This paper describes a simulation modeling tool for experimenting with alternative configurations for parallel conveyor systems. Incorporated into this simulation model are “degrees-of-free” routing strategies that enables system flexibility in the case ...

This paper describes the application of a digital computer simulation model to design a large facility for assembling and testing approximately 30,000 motoreducers a year. The simulation model is designed and calibrated entirely on actual operating data,...

This paper describes the potential use of new computer simulation techniques for human factors designers in automated industrial process control. Problems in communications, operational procedures, and task allocation between the operator, computers and ...

Large scale information systems have been finding increased application in areas of industrial control. Integrated system planning techniques require comprehensive examinations of all aspects of system integration if global optimization goals are to be ...

This paper reports on progress to date in developing a computerized simulation - optimization model of the general management structure of a firm. This model called MANAGE, offers a framework wherein the profit performance of a company can be simulated ...

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 ...

This presentation will attempt to demonstrate the capability inherent in GPSS beyond the original intent of the language developers. For the efficient use of GPSS it is necessary to determine what you want to do and then determine how best to represent ...

In recent years, a growing number of American industries have faced increased competition from foreign manufacturers. As a result, many corporations are investing more of their resources in productivity and process modernization studies. This paper ...

A computerized production scheduling system is described that was developed to replace a manual system for scheduling production in a production subsystem consisting of one hundred seventy people and a considerable amount of expensive production ...

A procedure is presented for assessing the sensitivity of a discrete event digital simulation model to the values assumed for its input parameters. A frequency domain approach is taken where the input parameters oscillate throughout a run of the model. ...

In using spectral analysis for confidence intervals in steady state simulations, the parameter 1 must be specified. This quantity determines the order of the covariances which are needed in computation of the standard error. This paper investigates the ...

We discuss a general concept of natural stratification in simulation, and present an approach to estimating mean performance measures in stationary simulations which possess a natural stratification.

This paper describes a planning model which forecasts annual domestic market demand by end use for a Westinghouse division manufacturing two lines of durable goods. This model takes an unusual approach in solving the problems that arise in analyzing any ...

A newly designed chemical plant will require distribution facilities to transport the products to the consumers. A Q-GERT model of the distribution network was developed and used in determining the least-cost physical facilities required to meet the ...

Computer simulation is examined as a tool to evaluate how the addition of an on line teller terminal system (OLTTS) will affect customer service in a bank. The St. Joseph Bank and Trust Company, in South Bend, Indiana, will be used as a case study bank ...

The principles of Computer Aided Design (CAD) have been incorporated in a simulation system to reduce the time and cost to produce simulations and expand the set of potential users to nonprogrammers. Computer Aided Programming for Simulation (CAPS) is ...

Computer simulation has long been recognized as a valuable tool for designing and analyzing manufacturing systems. In particular, the transaction flow basis of the GPSS (General Purpose Simulation System) simulation language is well suited for the part ...

Every simulation language embodies a world-view which heavily influences approaches taken in building models in the language. In most applications for which a given language is used, the world-view of the language enforces a discipline of programming ...

A selective survey is given of new methods in non-uniform random variate generation.

This paper describes a two-phase approach to systems optimization via computer simulation experimentation. In the first phase, Box's Complex Search is employed to search from some initial set of simulation trials X₁..., X_K to an estimated optimum ...

This paper discusses the techniques employed in implementing pseudo-random number generating routines in Demos (a discrete event simulation extension to Simula). We give a basic routine for generating random numbers uniform in the interval (0, 1) and ...

This paper discusses a GPSS V simulation model of a filter rod manufacturing process at the Macon, Georgia Branch of the Brown & Williamson Tobacco Corporation. This automated filter rod process produces and stores filter rods for use as needed by the ...

This paper describes the development of a prototype decision support system which supports decision making in aerospace manufacturing environments. This system, referred to as ICAM Decision Support System (IDSS) Prototype 2, integrates various types of ...

A GPSS model was developed to simulate the flow of parts through the stages of a network manufacturing process. The general network consists of M sequential stages, with a variable number of machines per stage. Parts can be processed on any of the N_i ...

Demos [1,2] is yet another discrete event simulation language hosted in Simula. It was released in 1979 and is now running on IBM, DEC, UNIVAC, and CDC hardwares amongst others. The paper contains a short introduction to Simula's object and context ...

This paper discusses the quantitative as well as qualitative tests which can be run in trying to convince the user of a simulation model that the results are valid