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IBM Systems Journal

Issue 2 • 1971

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Displaying Results 1 - 6 of 6
  • The formal description of programming languages

    Publication Year: 1971, Page(s):86 - 112
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2149 KB)

    The formal description methods introduced in this paper were related to our simple language SPL for explanation purposes. Actually, the methods (i.e., abstract trees, predicates, state components, control trees, etc.) apply to all programming languages. However, some programming languages contain facilities that cannot be expressed using the methods described in this paper alone. For example, addi... View full abstract»

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  • Simulation of a model of paging system performance

    Publication Year: 1971, Page(s):113 - 128
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1732 KB)

    This paper compares three simulation methods with straightforward sampling to study the efficiency of these methods in estimating the performance of a demand-paging system model. Measures of system overhead, queuing delays, and transient response of the modeled system are related to parameters describing the processing demands of the programs load. Our results for this specific system model sugges... View full abstract»

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  • An analysis of the machine interference model

    Publication Year: 1971, Page(s):129 - 142
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1369 KB)

    The asymptotic properties of the machine interference model were described in this paper. When the properties of the system were appropriately normalized and represented in terms of the variable w (=nu/v), the size dependencies of these properties were of order 1/n in regions of the most interest, that is, w < 1. Furthermore, the model displayed a functionally different behavior in the reg... View full abstract»

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  • A computer graphics system for block diagram problems

    Publication Year: 1971, Page(s):143 - 161
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1722 KB)

    This paper has described the design of an experimental system intended for solving complex problems. Facilities are provided for stating a problem as a labeled block diagram of arbitrary complexity. A block diagram can be drawn on a representative sheet that is many times larger than the screen of the cathode-ray tube. The block diagram may be structured into a hierarchy of sheets allowing blocks ... View full abstract»

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  • Authors

    Publication Year: 1971, Page(s):162 - 163
    IEEE is not the copyright holder of this material | PDF file iconPDF (1061 KB)
    Freely Available from IEEE
  • Abstract

    Publication Year: 1971, Page(s):164 - 165
    IEEE is not the copyright holder of this material | PDF file iconPDF (876 KB)
    Freely Available from IEEE

Aims & Scope

Throughout its history, the IBM Systems Journal has been devoted to software, software systems, and services, focusing on concepts, architectures, and the uses of software.

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John J. Ritsko
IBM T. J. Watson Research Center5