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IBM Journal of Research and Development

Issue 3 • Date July 1962

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Displaying Results 1 - 15 of 15
  • Rectification of Satellite Photography by Digital Techniques

    Publication Year: 1962, Page(s):290 - 305
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1611 KB)

    Sample photographs from the TIROS I Weather Satellite have been successfully transformed into a Mercator projection using automatic digital techniques. Mathematical formulas expressing the relation between the photoplane and the Mercator projection have been derived, and a computer program has been written to efficiently manipulate a “digital photograph” in accordance with the formul... View full abstract»

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  • Multiple Input-Output Links in Computer Systems

    Publication Year: 1962, Page(s):306 - 328
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1492 KB)

    An algorithm is developed for the analysis and design of computing systems having a multiplicity of concurrent and independent information sources and a lesser number of input channels to the processing elements of a digital computer; the input-output links work simultaneously with the processing and computing elements of the system. Utilizing this algorithm, such problems pertaining to the amount... View full abstract»

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  • Diffusion of Gas from a Liquid into an Expanding Bubble

    Publication Year: 1962, Page(s):329 - 337
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (701 KB)

    The growth of a bubble within a volume of isothermal viscous liquid containing uniformly distributed dissolved gas is considered. The problem of characterizing this growth-by-mass-transfer is reduced to an integro-differential equation for the bubble radius as a function of time, and a computer solution is obtained. The initial and final stages of growth are treated analytically. View full abstract»

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  • Spin Absorption Spectra

    Publication Year: 1962, Page(s):338 - 347
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (760 KB)

    Spin systems exhibit a whole spectrum of absorption lines when in small constant external magnetic fields giving Zeeman energies comparable to internal interaction energies. With such small constant magnetic fields, power is absorbed from an alternating magnetic field at zero frequency, at the Larmor frequency, and at harmonics of the Larmor frequency, both for perpendicular- and parallel-field co... View full abstract»

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  • An Experiment on the Effect of Particle Orientation on Peak Shift in Magnetic Tapes

    Publication Year: 1962, Page(s):348 - 352
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (620 KB)

    One of the limiting factors in high-density recording on magnetic tape is the phenomenon of peak shift. With the NRZI code (flux change on a one, no flux change on a zero) this means that the reproduced signals from two successive ones preceded and followed by zeros are separated in time by more than the natural bit period. The peaks in the signal output from the two ones are thus shifted outwards... View full abstract»

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  • A “Logical Pattern” Recognition Program

    Publication Year: 1962, Page(s):353 - 360
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (820 KB)

    A description is given of an IBM 7090 program which searches for “logical patterns” in a set of input samples. The program was tested on a character recognition problem, where it designed a recognition system whose error rate and hardware requirements are compared to those of a system designed by humans. This program is intended to be used as a research tool to discover certain kinds... View full abstract»

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  • Optical Mixing of Coherent and Incoherent Light [Letter to the Editor]

    Publication Year: 1962, Page(s):361 - 362
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | PDF file iconPDF (323 KB)
    Freely Available from IEEE
  • Fluorescence of Europium Tungstate [Letter to the Editor]

    Publication Year: 1962, Page(s):363 - 364
    IEEE is not the copyright holder of this material | PDF file iconPDF (282 KB)
    Freely Available from IEEE
  • A Note on the Nature of RNA Codes [Letter to the Editor]

    Publication Year: 1962, Page(s):365 - 367
    IEEE is not the copyright holder of this material | PDF file iconPDF (341 KB)
    Freely Available from IEEE
  • Partial-Switching Processes in Thin Magnetic Films [Letter to the Editor]

    Publication Year: 1962, Page(s):368 - 371
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | PDF file iconPDF (444 KB)
    Freely Available from IEEE
  • Direct Observation of Dislocation Loops in Arsenic-Doped Germanium [Letter to the Editor]

    Publication Year: 1962, Page(s):372 - 374
    IEEE is not the copyright holder of this material | PDF file iconPDF (403 KB)
    Freely Available from IEEE
  • Electron Beam Microanalysis of Germanium Tunnel Diodes [Letter to the Editor]

    Publication Year: 1962, Page(s):375 - 377
    IEEE is not the copyright holder of this material | PDF file iconPDF (384 KB)
    Freely Available from IEEE
  • IBM Technical Papers Published Recently in Other Journals

    Publication Year: 1962, Page(s):378 - 388
    IEEE is not the copyright holder of this material | PDF file iconPDF (1182 KB)
    Freely Available from IEEE
  • Recent IBM Patents

    Publication Year: 1962, Page(s):389 - 390
    IEEE is not the copyright holder of this material | PDF file iconPDF (257 KB)
    Freely Available from IEEE
  • Authors

    Publication Year: 1962, Page(s):391 - 392
    IEEE is not the copyright holder of this material | PDF file iconPDF (337 KB)
    Freely Available from IEEE

Aims & Scope

The IBM Journal of Research and Development is a peer-reviewed technical journal, published bimonthly, which features the work of authors in the science, technology and engineering of information systems.

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Meet Our Editors

Editor-in-Chief
Clifford A. Pickover
IBM T. J. Watson Research Center