IBM Journal of Research and Development

Issue 4 • July 1974

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Displaying Results 1 - 13 of 13
  • Optimal Pricing for an Unbounded Queue

    Publication Year: 1974, Page(s):290 - 302
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1217 KB)

    The maximization of expected reward is considered for an Mp/M/s queuing system with unlimited queue capacity. The system is controlled by dynamically changing the price charged for the facility's service in order to discourage or encourage the arrival of customers. For the finite queue capacity problem, it has been shown that all optimal policies possess a certain monotonicity property,... View full abstract»

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  • Effects of Serial Programs in Multiprocessing Systems

    Publication Year: 1974, Page(s):303 - 309
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (386 KB)

    A model of a multiprocessing, multiprogramming computer system with serially reusable programs was developed to study the effect of serial programs on system performance. Two strategies for implementing serially reusable programs were investigated, a wait strategy in which the processor waits until the serial program is available, and a switch strategy, in which the processor is freed to do other ... View full abstract»

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  • Optimal Task Switching Policy for a Multilevel Storage System

    Publication Year: 1974, Page(s):310 - 315
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (412 KB)

    Capacity demands for computer memory are increasing. A multilevel storage system provides an economically feasible solution without seriously affecting the total response time. An M-level storage system is considered in this paper. The capability of a digital computer with a multilevel storage system is best enhanced in a multiprogramming environment. In a high level storage system, determination ... View full abstract»

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  • Determining Hit Ratios for Multilevel Hierarchies

    Publication Year: 1974, Page(s):316 - 327
    Cited by:  Papers (16)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (510 KB)

    The applicability of stack processing for evaluation of storage hierarchies has been limited to two-level systems and to a very special group of multilevel hierarchies. A generalization of stack processing, called joint stack processing, is introduced. This technique makes possible the efficient determination of hit ratios for a class of multilevel hierarchies—staging hierarchies. These hie... View full abstract»

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  • Iterative-Interactive Technique for Logic Partitioning

    Publication Year: 1974, Page(s):328 - 337
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (494 KB)

    A method is developed for partitioning a computer logic design into subsets by combining a constructive method, used for the initial partition, with iterative improvement techniques. These iterative techniques are implemented in an interactive computing environment, which further enhances their efficiency and usefulness. An overview of the system is presented, several algorithms discussed and expe... View full abstract»

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  • Microcoded Modem Transmitters

    Publication Year: 1974, Page(s):338 - 351
    Cited by:  Papers (5)  |  Patents (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (655 KB)

    This paper describes various microcoded designs for modem transmitters. The digital echo modulation technique, originally introduced by J-M. Pierret, is applied to cover the case of a fully digital universal modem. The capabilities of several microcoded modem designs are presented and their limitations are discussed. View full abstract»

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  • Quantitative Electron Microprobe Analysis of Thin Films on Substrates

    Publication Year: 1974, Page(s):352 - 363
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (593 KB)

    Monte Carlo simulation procedure is developed for kilovolt electron beam scattering and energy loss in targets consisting of thin films on thick substrates. Such calculations have direct application to the nondestructive quantitative chemical analysis of ultra-thin films in the electron microprobe (an electron probe x-ray microanalyzer), utilizing characteristic x-ray fluorescence. Angular elastic... View full abstract»

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  • Drop Formation in a Liquid Jet

    Publication Year: 1974, Page(s):364 - 369
    Cited by:  Papers (10)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (680 KB)

    A one-dimensional analysis of drop formation in a liquid jet is developed under the assumption that the axial velocity of the axisymmetric, nonviscous liquid jet remains independent of the radial coordinate. The resulting equations are used for both linear and nonlinear analyses. In the linear form, this model provides a stream stability relation comparable to that of Rayleigh; transient solutions... View full abstract»

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  • Bulk Queue Model for Computer System Analysis

    Publication Year: 1974, Page(s):370 - 372
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (285 KB)

    A bulk queue model was developed for analyzing a multiprogrammed computer system. It can be used in conjunction with closed queuing models to study message queuing in a teleprocessing system. The model is based on an imbedded Markov chain analysis. View full abstract»

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  • Recent papers by IBM Authors

    Publication Year: 1974, Page(s):373 - 377
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (427 KB)

    Reprints of the papers listed here may usually be obtained by writing directly to the authors. The authors' IBM divisions are identified as follows: ASDD is the Advanced Systems Development Division; DPD, Data Processing Division; FED, Field Engineering Division; FSD, Federal Systems Division; GPD, General Products Division; CSD, General Systems Division; OPD, Office Products Division; RES, Resear... View full abstract»

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  • Recent IBM patents

    Publication Year: 1974, Page(s):378 - 380
    IEEE is not the copyright holder of this material | PDF file iconPDF (259 KB)
    Freely Available from IEEE
  • Authors

    Publication Year: 1974, Page(s):381 - 383
    IEEE is not the copyright holder of this material | PDF file iconPDF (217 KB)
    Freely Available from IEEE
  • Contents of previous issues

    Publication Year: 1974, Page(s):384 - 385
    IEEE is not the copyright holder of this material | PDF file iconPDF (230 KB)
    Freely Available from IEEE

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Clifford A. Pickover
IBM T. J. Watson Research Center