By Topic

IBM Journal of Research and Development

Issue 4 • Date Oct. 1957

Filter Results

Displaying Results 1 - 16 of 16
  • Table of Contents

    Publication Year: 1957, Page(s): 293
    IEEE is not the copyright holder of this material | PDF file iconPDF (193 KB)
    Freely Available from IEEE
  • Preface

    Publication Year: 1957, Page(s): 293
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (213 KB)

    The intriguing properties of matter which are inherent only at low temperatures led IBM to initiate a low-temperature research program in 1954. The application of some of these properties to circuit components has been recently demonstrated by the use of superconductivity for computer components by D. A. Buck* and by the development of the Solid State Maser by Bell Telephone Laboratories.† ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Trapped-Flux Superconducting Memory

    Publication Year: 1957, Page(s):294 - 303
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (847 KB)

    A memory cell based on trapped flux in superconductors has been built and tested. The cell is constructed entirely by vacuum evaporation of thin films and can be selected by coincident current or by other techniques, with drive-current requirements less than 150 ma. The short transition time of the trapped-flux cell indicates its possible use in high-speed memories. The superconductive film memory... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An Analysis of the Operation of a Persistent-Supercurrent Memory Cell

    Publication Year: 1957, Page(s):304 - 308
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (381 KB)

    From a thin-film persistent-supercurrent memory cell is abstracted a particular theoretical model which is discussed exactly and in detail. The behavior predicted is in good agreement with that of experimental devices built to be as closely like the model as was possible at the time. Partly because of the simplicity of the analysis and the rather complete understanding thus gained, this model may ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Statistical Approach to Mechanized Encoding and Searching of Literary Information

    Publication Year: 1957, Page(s):309 - 317
    Cited by:  Papers (29)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (508 KB)

    Written communication of ideas is carried out on the basis of statistical probability in that a writer chooses that level of subject specificity and that combination of words which he feels will convey the most meaning. Since this process varies among individuals and since similar ideas are therefore relayed at different levels of specificity and by means of different words, the problem of literat... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Effect of an Electric Field on the Transitions of Barium Titanate

    Publication Year: 1957, Page(s):318 - 329
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (670 KB)

    A review is presented of the effects of electric fields on the ferroelectric phase transitions of barium titanate at 120°C and 5°C. The double hysteresis loop observed at the Curie point and the triple hysteresis loop and dielectric constant measured at the 5°C transition are examined in the light of Devonshire's thermodynamic theory of ferroelectricity in barium titanate. The... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Mechanical Heart-Lung Apparatus

    Publication Year: 1957, Page(s):330 - 340
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (816 KB)

    An apparatus is described for taking over the functions of the human heart and lungs for short periods of time to permit a surgeon to perform certain open-heart surgical procedures in a blood-free field. This equipment is capable of receiving venous blood from the patient, removing excess carbon dioxide and restoring the proper oxygen content, and finally of pumping the blood back into the patient... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Formalization of Scientific Languages—Part I: The Work of Woodger and Hull

    Publication Year: 1957, Page(s):341 - 348
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (484 KB)

    The extent to which scientific languages can be formalized is an important problem, especially if it is assumed that a theorem-proving machine will deal most effectively with formal systems. In Part I, the axiomatic attempts of Woodger in genetics and of Hull in the theory of rote learning are examined. In Parts II and III, to be published later, the more prominent efforts to formalize physical th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Radiant-Energy Heater Using an Ellipsoidal Reflector

    Publication Year: 1957, Page(s):349 - 355
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (507 KB)

    The effectiveness of a radiant-energy heater employing a hemi-ellipsoidal aluminum reflector and an incandescent lamp as radiation source is illustrated by application to the zone-melting of germanium. The factors affecting the design and performance of this heater are discussed. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Binary-Weighted Current Decoder

    Publication Year: 1957, Page(s):356 - 362
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (527 KB)

    A novel method for driving cathode-ray-tube deflection yokes from digital equipment has been found. The system is compared with other methods and outstanding features are described. The important design parameters are outlined and their effect on circuit operation noted. A printed-circuit-package assembly of a typical converter using this system is shown. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Radio-Interference Control as Applied to Business Machines

    Publication Year: 1957, Page(s):363 - 372
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (484 KB)

    This paper discusses certain known characteristics and sources of radio interference and methods used to reduce the interference levels present in business machines. Particular attention is given to electro-mechanical machines ranging from a simple card perforator, operated by an electrical contact and an electromagnet, to electronic data-processing machines. The sources of interference in these m... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Superconducting Connections to Films

    Publication Year: 1957, Page(s): 373
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (218 KB)

    A method for making superconducting connections to thin films of evaporated metal deposited on wires has been found useful at this laboratory. Compressed lead powder of the smallest commercial particle size is used as an intermediate contact between the film and external circuitry. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • IBM Technical Papers Published in Other Journals

    Publication Year: 1957, Page(s):374 - 377
    IEEE is not the copyright holder of this material | PDF file iconPDF (336 KB)
    Freely Available from IEEE
  • Recent IBM Patents

    Publication Year: 1957, Page(s): 378
    IEEE is not the copyright holder of this material | PDF file iconPDF (153 KB)
    Freely Available from IEEE
  • Authors

    Publication Year: 1957, Page(s):379 - 380
    IEEE is not the copyright holder of this material | PDF file iconPDF (275 KB)
    Freely Available from IEEE
  • Contents of Previous Issues

    Publication Year: 1957, Page(s): 380
    IEEE is not the copyright holder of this material | PDF file iconPDF (238 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.

Learn about subscribing to this journal >

Full Aims & Scope

Meet Our Editors

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