Graphical simulation system 

Related languages
GERT => GERTS   Evolution of
GERTS => GERTS II   Evolution of

  • Whitehouse, Gary E. "Systems analysis and design using network techniques" Prentice-Hall, Englewood Cliffs, N. J., 1973 view details
  • Andree, R. V. review of Whitehouse 1973 (GERT, GERTS) view details Abstract: As in any book on systems, the emphasis here is on the structure and interaction of the various components of the system. This leads quite naturally to a study of graphic representtion (network modeling and decision trees) via probability theory. The latter is reviewed in Chapter 2 for the reader, be your reviewer would consider familiarity with probability theory to be a vital prerequisite for the course.

    The author's primary departure is the use of GERT (Graphical Evaluation and Review Technique) programming language, developed by Pritsker at Lehigh University. The more common PERT (Program Evaluation and Review Technique) and CPM (Critical Path Method) techniques, are also mentioned, but GERT is the primary program used. Programs GERT and GERTS will be copied onto the user's tape for a nominal $25 fee by its developer, so the use of this powerful new tool is not beyond any user's budget. It is difficult to evaluate a book of this type without actually teaching it and having GERTS available for student use, but one is led to suspect that it, at least, merits an opportunity to prove itself. Certainly, the network technique discussed is a vital tool in today's business and industrial worlds. The author is to be congratulated for his end-of-chapter reference lists, also designed to encourage users to use the library, a vital resource in using tools that are still in the development stage.
          in ACM Computing Reviews 15(06) June 1974 view details
  • Elayat, H.; Elsayed, E. A.; and Regab, M. "An approach for simulating regional migration patterns" Comput. Ind. Eng. S. I (1981), pp23-32. view details Abstract: In this paper, GERTS III is presented as a possible approach for simulating regional migration patterns. Fourteen years of aggregate Canadian census data were compiled and a mathematical model was constructed to describe the patterns of inter-regional migration viewed as a discrete time Markov process. A GERTS III network was developed to analyze and describe this process. Measures of population mobility, degree of mobility, and retention were derived. The implications for policy makers are highlighted.
          in ACM Computing Reviews 15(06) June 1974 view details