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IBM Journal of Research and Development

Issue 4 • July 1993

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Displaying Results 1 - 8 of 8
  • Head actuator dynamics of an IBM 5¼-inch disk drive

    Publication Year: 1993, Page(s):479 - 490
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (934 KB)

    The IBM 5¼-inch disk drive contained in the IBM 9345 DASD Module provides high track density and storage capacity, dynamic test failure rates below three parts per million, and low sensitivity to assembly variations. The design techniques used to achieve the required vibrational characteristics of the head actuator assembly are described. Dynamic stability specifications are derived from dr... View full abstract»

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  • Statistical modeling in manufacturing: Adapting a diagnostic tool to real-time applications

    Publication Year: 1993, Page(s):491 - 506
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (997 KB)

    This paper describes a process for constructing a statistical model to automate the analysis of data from complex diagnostic tools. The method is demonstrated on data taken from an optical emission spectrometer (OES), one of the most powerful tools used in semiconductor manufacturing for detecting the chemical composition and impurity levels in plasma processes. The analysis of OES data currently ... View full abstract»

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  • Flexible simulation of a complex semiconductor manufacturing line using a rule-based system

    Publication Year: 1993, Page(s):507 - 522
    Cited by:  Papers (4)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1480 KB)

    Rule-based systems have been used to produce fast, flexible simulation models for semiconductor manufacturing lines. This paper describes such a rule-based simulator for a semiconductor manufacturing line, and the language in which it is written. The simulator is written in a rule-based declarative style that uses a single-rule “template” to move thousands of product lots through var... View full abstract»

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  • Component procurement and allocation for products assembled to forecast: Risk-pooling effects

    Publication Year: 1993, Page(s):523 - 536
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1011 KB)

    This paper considers procurement and allocation policies in a manufacturing environment where common components are assembled into various products that have stochastic demands. The components are allocated to the assembly of a product at a time when product demand is still uncertain (assemble to forecast, ATF). The special case of one component shared by N different products is analyzed, and insi... View full abstract»

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  • Modeling the cost of data communication for multi-node computer networks operating in the United States

    Publication Year: 1993, Page(s):537 - 546
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (799 KB)

    The study reported here examines the cost of data communication for multi-node computer networks operating in the United States. We begin by defining a market basket of private-line transmission services and identifying its constituent prices. Two analytic models are then proposed. The first, which derives a theoretical relationship from microeconomic considerations, gives price movement as a func... View full abstract»

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  • A load-instruction unit for pipelined processors

    Publication Year: 1993, Page(s):547 - 564
    Cited by:  Papers (42)  |  Patents (12)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1446 KB)

    A special-purpose load unit is proposed as part of a processor design. The unit prefetches data from the cache by predicting the address of the data fetch in advance. This prefetch allows the cache access to take place early, in an otherwise unused cache cycle, eliminating one cycle from the load instruction. The prediction also allows the cache to prefetch data if they are not already in the cach... View full abstract»

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  • Recent publications by IBM authors

    Publication Year: 1993, Page(s):565 - 578
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1145 KB)

    The information listed here is supplied by the Institute for Scientific Information and other outside sources. Reprints of the papers may be obtained by writing directly to the first author cited. Information on books may be obtained by writing to the publisher. Journals and books are listed alphabetically by title; papers are listed sequentially for each journal. View full abstract»

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  • Recent IBM patents

    Publication Year: 1993, Page(s):579 - 580
    IEEE is not the copyright holder of this material | PDF file iconPDF (157 KB)
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IBM T. J. Watson Research Center