IBM Journal of Research and Development

Issue 3 • May 1966

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Displaying Results 1 - 14 of 14
  • Analysis and Synthesis Procedures for Geneva Mechanism Design

    Publication Year: 1966, Page(s):186 - 197
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (598 KB)

    This paper contains general analytical results which can be applied to high-speed Geneva design. The results are derived from classical mechanics theory and provide explicit relationships between the performance parameters (those parameters such as contact stress, maximum load, etc., which can have a significant effect on the mechanism performance) and the design variables which specify a Geneva m... View full abstract»

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  • Separation of the Linear and Parabolic Terms in the Steam Oxidation of Silicon

    Publication Year: 1966, Page(s):198 - 206
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (575 KB)

    Using accurate film thickness measurements, it was found possible to separate linear and parabolic terms in the steam oxidation of silicon, and thus obtain much more precise expressions for the thermal oxidation under different conditions. The combined linear-parabolic relation was found to be applicable to various crystallographic orientations. The pure parabolic “constant” obtained... View full abstract»

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  • Tensor Analysis of Spatial Mechanisms

    Publication Year: 1966, Page(s):207 - 212
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (467 KB)

    The position analysis of a general four-bar spatial mechanism is developed using tensor notation and operations. To exemplify the convenience of tensors in kinematic analysis the solution is obtained for a mechanism containing two revolute pairs of links and two spherical pairs. View full abstract»

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  • Avalanche Breakdown Calculations for a Planar p-n Junction

    Publication Year: 1966, Page(s):213 - 219
    Cited by:  Papers (11)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (611 KB)

    A mathematical analysis is presented on the avalanche breakdown voltage of a planar p-n junction. This analysis takes into consideration junction curvature, as encountered near a diffusion mask edge. Three different impurity atom profiles are considered: abrupt, linearly graded, and diffused. For an asymmetrical abrupt structure, it is shown that regions of junction curvature exhibit either an inc... View full abstract»

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  • Stability of Flexible Tapes in Parallel Flow

    Publication Year: 1966, Page(s):220 - 224
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (320 KB)

    A stability analysis by the method of normal modes is carried out for a plane Poiseuille flow in a channel with a free-flying elastic tape in midstream. The effects of transverse and rotary inertia and flexural rigidity of the tape on the stability criteria are investigated. An increase of transverse inertia due to heavier tapes tends to decrease the critical Reynold's number while the addition of... View full abstract»

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  • Intensity Noise in Multimode GaAs Laser Emission

    Publication Year: 1966, Page(s):225 - 232
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (551 KB)

    As presently manufactured most GaAs lasers have several lasing modes when the injection current is more than 25% above threshold. This paper describes the noise properties of three groups of multimode lasers operating cw at 10°K, classified on the basis of their sub-threshold spectra. Two main types of intensity noise have been found: (1) low frequency nonstationary noise which occurs when ... View full abstract»

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  • A Theoretical Analysis of Saturation Magnetic Recording

    Publication Year: 1966, Page(s):233 - 243
    Cited by:  Papers (39)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (609 KB)

    A theoretical analysis of the saturation magnetic recording process is presented. The approach is based on the complete characterization of an isolated magnetization transition on the recording surface. The effects of the writing process, demagnetization, recording surface thickness, transducer-to-medium spacing, and readback transducer resolution are considered in calculating the exact pulse shap... View full abstract»

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  • Some New Methods for Digital Encoding of Voice Signals and for Voice Code Translation

    Publication Year: 1966, Page(s):244 - 254
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (613 KB)

    Recently developed techniques are described for improving the speech quality of voice signals that are first digitally encoded, placed in random access storage, and on demand are then translated into normal speech in an audio response unit under the control of a host processor. The development is an extension and modification of the channel vocoder principle. Speech quality is enhanced by hardware... View full abstract»

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  • Thermostrictive Recording on Permalloy Films

    Publication Year: 1966, Page(s):255 - 260
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (353 KB)

    Where the magnetostrictive coefficient is of the order of 10−6 or greater, recording may be accomplished on uniaxial Permalloy films by the application of a local stress in coincidence with a biasing field. Here, the stress is introduced into the film as a result of a temperature gradient produced by an incident laser or electron beam. The mechanism of recording is studied and a ... View full abstract»

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  • Technical Published Papers by IBM Authors Recently in Other Journals

    Publication Year: 1966, Page(s):261 - 271
    IEEE is not the copyright holder of this material | PDF file iconPDF (661 KB)
    Freely Available from IEEE
  • Recent Issued Patents Assigned to IBM

    Publication Year: 1966, Page(s):272 - 273
    IEEE is not the copyright holder of this material | PDF file iconPDF (237 KB)
    Freely Available from IEEE
  • Authors

    Publication Year: 1966, Page(s):274 - 275
    IEEE is not the copyright holder of this material | PDF file iconPDF (162 KB)
    Freely Available from IEEE
  • Contents of previous two issues

    Publication Year: 1966, Page(s): 276
    IEEE is not the copyright holder of this material | PDF file iconPDF (159 KB)
    Freely Available from IEEE
  • Errata [Addendum]

    Publication Year: 1966, Page(s): 276
    IEEE is not the copyright holder of this material | PDF file iconPDF (228 KB)
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IBM T. J. Watson Research Center