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  • 1990-1994  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Calibration method for the quantitative analysis of gas mixtures by means of multiphoton ionization mass spectrometry (1993)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 3482-3486 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A technique for quantitative analysis of gas mixtures in a laser mass spectrometer is presented. It is based on the addition of two calibration gases with different orders of multiphoton ionization process to the sample gas. The ratio of the signals of these two internal standards serves as a sensor for the laser intensity within the ionization volume. Thus strongly fluctuating signals due to higher-order multiphoton ionization can be normalized for every single laser shot. In addition, for such a relative measurement, effects of long-term drifts of the apparatus are eliminated. Concentrations varying from a few ppm to several percent could be determined with an accuracy better than 10% at every single laser shot. Therefore this technique allows high time resolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1144272
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    Paper (German National Licenses)
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  • 2
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    Preferences for a verb's complements and their use in sentence processing (1993)
    New York : Periodicals Archive Online (PAO)
    Journal of Memory and Language. 32:1 (1993:Feb.) 96 
    Details
    ISSN: 0749-596X
    Topics: Psychology
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:b180-1993-032-01-000006
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Model-based object tracking in monocular image sequences of road traffic scenes (1993)
    Springer
    International journal of computer vision 10 (1993), S. 257-281 
    Details
    ISSN: 1573-1405
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract Moving vehicles are detected and tracked automatically in monocular image sequences from road traffic scenes recorded by a stationary camera. In order to exploit the a priori knowledge about shape and motion of vehicles in traffic scenes, a parameterized vehicle model is used for an intraframe matching process and a recursive estimator based on a motion model is used for motion estimation. An interpretation cycle supports the intraframe matching process with a state MAP-update step. Initial model hypotheses are generated using an image segmentation component which clusters coherently moving image features into candidate representations of images of a moving vehicle. The inclusion of an illumination model allows taking shadow edges of the vehicle into account during the matching process. Only such an elaborate combination of various techniques has enabled us to track vehicles under complex illumination conditions and over long (over 400 frames) monocular image sequences. Results on various real-world road traffic scenes are presented and open problems as well as future work are outlined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01539538
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Prosody and the processing of filler-gap sentences (1994)
    Springer
    Journal of psycholinguistic research 23 (1994), S. 473-485 
    Details
    ISSN: 1573-6555
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Abstract This study was designed to explore the effects of linguistic prosody on the processing of “filler-gap” sentences. We designed two experiments to determine first whether the sentence processor uses information contained in the prosodic contour of an utterance during on-line processing, and second the form that information may take. In Experiment 1, we found that prosody apparently influences when listeners posit gaps on-line. In Experiment 2, we obtained acoustic evidence that gaps are represented in the prosodic contour of an utterance. The results of this study support a view in which prosody contributes very early to on-line structure building mechanisms during sentence processing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02146686
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis and examination of chiral liquid crystalline side chain polymers (1994)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 45 (1994), S. 21-25 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Substituted poly(methylsiloxane)s connected by a spacer with a biphenyl system that is esterificated with a chiral α-chlorocarboxylic acid have been synthesized and characterized. Their liquid crystalline properties have been studied by differential scanning calorimetry (DSC), polarization microscopy, electro-optical methods and X-ray diffraction. Most of the synthesized compounds and polymers have liquid crystalline phases, mainly smectic phases.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1994.010450105
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    Paper (German National Licenses)
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