2,217 research outputs found

    Real surface effects on radiative heat transfer

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    Radiative heat transfer for system of radiatively interacting opaque surfaces separated by radiatively transparent mediu

    Theoretical Study of Radiant Heat Exchange for Non-gray Non-diffuse Surfaces in a Space Environment Semiannual Status Report No. 2, Aug. 1965 - Feb. 1966

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    Bi-directional reflectance models for describing distribution of reflected energy from rough metallic spacecraft surface

    Radiant heat exchange in a space environment Scientific technical report, 1 Feb. - 31 Jul. 1970

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    Spectral and directional surface property effects on radiant heat transfer in space environmen

    Theoretical study of radiant heat exchange for non-gray non-diffuse surfaces in a space environment Final report

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    Theory of radiant heat exchange for nongray nondiffuse surfaces in space environmen

    Hierarchical Strategy of Model Partitioning for VLSI-Design Using an Improved Mixture of Experts Approach

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    The partitioning of complex processor models on the gate and register-transfer level for parallel functional simulation based on the clock-cycle algorithm is considered. We introduce a hierarchical partitioning scheme combining various partitioning algorithms in the frame of a competing strategy. Melting together different partitioning results within one level using superpositions we crossover to a mixture of experts one. This approach is improved applying genetic algorithms. In addition we present two new partitioning algorithms both of them taking cones as fundamental units for building partitions

    Dose-area product measurements during Barium enema radiograph examinations -a Western Cape study

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    The aim of this study was to obtain a direct measurement of the typical dose delivered to an average adult patient during a barium enema examination. Measurement was done on a sample of 50 patients at three departments, using a dose-area product (DAP) meter. The comparison of the results with UK median levels indicates that the doses measured in South Africa are higher (41 Gy cm2 (dose x area) v. 48 Gy cm2 ). Patient protection can be improved by comparing local practice with national reference levels. The values obtained in this study (first quartile 35 Gy cm2, median 48 Gy cm2, third quartile 84 Gy cm2) are recommended as initial reference dose levels for barium enemas in South Africa
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