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Creator | Title | Description | Subject | Date |
1 |
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Horch, Kenneth W. | Acoustic interneurons of fiddler and ghost crabs | The properties of acoustic interneurons in fiddler (Uca pugilalor and U. minax) and ghost (Ocvpade qucldrula) crabs are described, as revealed bv tests with pure tones. Three types of interneurons were present in all species: tonic, which fired for the duration of the stimulus; phasic, which fire... | Acoustic crabs; Neural recording; Vibration reception | 1976 |
2 |
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Callahan, Michael Wayne | Acoustic signal processing based on the short-time spectrum | The frequency domain representation of a time signal afforded by the Fourier transform is a powerful tool in acoustic signal processing. The usefulness of this representation is rooted in the mechanisms of sound production and perception. Many sources of sound exhibit normal modes or natural frequen... | Acoustic signal processing | 1976 |
3 |
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Crow, Franklin C. | The aliasing problem in computer-synthesized shaded images | This paper describes work toward improving the quality of computer-synthesized shaded images. Current (practical) hidden-surface algorithms produce an image whose precision is strictly limited by the number of picture elements. Problems caused by this limitation are described and explained in the t... | aliasing problem; shaded images; hidden-surface algorithms | 1976 |
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Fuchs, Henry | The automatic sensing and analysis of 3-D surface points from visual scenes | Described are the design and implementation of a new range-measuring sensing device and an associated software algorithm for constructing surface descriptions of arbitrary three-dimensional objects from single or multiple views. The sensing device, which measures surface points from objects in its ... | Range-measuring; Sensing device | 1976 |
5 |
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Atashroo, Mohammad Ali | Pole-Zero modeling and its applications to speech processing | Autocorrelation Pole-Zero modeling identifies the parameters of a rational transfer function H(z) whose short time-lag autocorrelations either exactly match (Autocorrelation partial Realization) or closely approximate (Autocorrelation Prediction) those of a given spectrum. As a result, the spectrum... | Pole-Zero modeling; Speech processing | 1976 |
6 |
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Gesteland, Raymond F. | Simian virus 40-specific polypeptides in Ad2+ND4- infected cells | A comparison of the proteins synthesized in human cells at late times after infection with adenovirus (Ad2) and with the adeno-simian virus 40 (SV40) hybrid viruses revealed polypeptides of 30,000 and 92,000 molecular weight specific for the hybrid viruses Ad2+ND1 and Ad2+ND4, respectively. Cell-fre... | Molecular Weight; Peptide Biosynthesis; RNA, Messenger; Viral Proteins | 1976 |
7 |
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Newell, Martin Edward | The utilization of procedure models in digital image synthesis | Many algorithms have been developed for synthesizing shaded images of three dimensional objects modeled by computer. In spite of widely differing approaches the current state of the art algorithms are surprisingly similar with respect to the richness of the scenes they can process. One attribute the... | Digital image synthesis; Procedure models; Shaded images; Three dimensional objects | 1976 |