54,218 research outputs found

    Comparator for the comparison of two binary numbers Patent

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    Characteristics of comparator circuits for comparison of binary numbers in information processing syste

    Rapid sync acquisition system Patent

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    System designed to reduce time required for obtaining synchronization in data communication with spacecraft utilizing pseudonoise code

    Design for a Rapid Automatic Sync Acquisition System

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    System provides rapid command sync acquisition between widely separated transmitter-receivers. It is based on a rapid, automatic range-adjustment approach rather than the time-consuming cycle slipping or stepping techniques of conventional phase-locked loops

    Phase diagram of geometric d-wave superconductor Josephson junctions

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    We show that a constriction-type Josephson junction realized by an epitactic thin film of a d-wave superconductor with an appropriate boundary geometry exhibits intrinsic phase differences between 0 and pi depending on geometric parameters and temperature. Based on microscopic Eilenberger theory, we provide a general derivation of the relation between the change of the free energy of the junction and the current-phase relation. From the change of the free energy, we calculate phase diagrams and discuss transitions driven by geometric parameters and temperature.Comment: 9 pages, 11 figures. Phys. Rev. B, accepte

    Application of LANDSAT-2 data to the implementation and enforcement of the Pennsylvania Surface Mining Conservation and Reclamation Act

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    The author has identified the following significant results. Evaluation of LANDSAT imagery indicates severe limitations in its utility for surface mine land studies. Image stripping resulting from unequal detector response on satellite degrades the image quality to the extent that images of scales larger than 1:125,000 are of limited value for manual interpretation. Computer processing of LANDSAT data to improve image quality is essential; the removal of scanline stripping and enhancement of mine land reflectance data combined with color composite printing permits useful photographic enlargements to approximately 1:60,000

    Error correcting method and apparatus Patent

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    Description of error correcting methods for use with digital data computers and apparatus for encoding and decoding digital dat

    Data compressor Patent

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    Description of system for recording and reading out data related to distribution of occurrence of plurality of event

    Evaluation of Materials and Concepts for Aircraft Fire Protection

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    Woven fiberglass fluted-core simulated aircraft interior panels were flame tested and structurally evaluated against the Boeing 747 present baseline interior panels. The NASA-defined panels, though inferior on a strength-to-weight basis, showed better structural integrity after flame testing, due to the woven fiberglass structure
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