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  • COMPUTERS  (5)
  • 36.40. +d  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Ultraviolet photoelectron studies of the molecules Se5, Se6, Se7 and Se8 with relevance to their geometrical structure (1991)
    Springer
    The European physical journal 19 (1991), S. 229-231 
    Details
    ISSN: 1434-6079
    Keywords: 31.20. +Z ; 33.60.Cv ; 35.20.Vf ; 36.40. +d
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The vacuum-UV-photoelectron spectra (hν=10.0 eV) of Se2, Se5, Se6, Se7 and Se8 were measured. The isolated particles were examined in a supersonic molecular beam employing the photoelectron-photocation-coincidence technique. The structures of the photoelectron spectra of selenium molecules with even and odd numbers of atoms differ in a characteristic manner. Whereas the spectra of Se6 and Se8 show one single broad band, three separated bands with different intensities are observed for Se5 and two for Se7. An attempt to connect these experimental observations with the geometrical structure of the molecules shows that the photoelectron spectra are consistent with theC 1h -symmetry of the Se5 and Se7 rings proposed in the literature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01448299
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Electronic structure of selenium- and tellurium-clusters (1991)
    Springer
    The European physical journal 19 (1991), S. 233-235 
    Details
    ISSN: 1434-6079
    Keywords: 33.60.Cv ; 36.40. +d
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The vacuum-UV-photoelectron spectra (hν=10.0 eV or 8.3 eV) of selenium- and tellurium-clusters of different sizes (up to Se25 and Te8) were measured in a molecular beam by a photoion-photoelectron-coincidence experiment. Especially, the photoelectron spectra (4p-π-electrons) of the selenium-clusters converge with growing cluster size to the well known spectra of amorphous solid selenium by taking into account the dielectric constant of the bulk material. The experimental results indicate the first evidence that larger selenium aggregates are van der Waals clusters of the molecules Se5, Se6, Se7 and Se8 which are contained in the equilibrium vapour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01448300
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Robot computer problem solving system (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A robot computer problem solving system which represents a robot exploration vehicle in a simulated Mars environment is described. The model exhibits changes and improvements made on a previously designed robot in a city environment. The Martian environment is modeled in Cartesian coordinates; objects are scattered about a plane; arbitrary restrictions on the robot's vision have been removed; and the robot's path contains arbitrary curves. New environmental features, particularly the visual occlusion of objects by other objects, were added to the model. Two different algorithms were developed for computing occlusion. Movement and vision capabilities of the robot were established in the Mars environment, using LISP/FORTRAN interface for computational efficiency. The graphical display program was redesigned to reflect the change to the Mars-like environment.
    Keywords: COMPUTERS
    Type: NASA-CR-133942 , QPR-6 , BBN-2615
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Robot, computer problem solving system (1972)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The development of a computer problem solving system is reported that considers physical problems faced by an artificial robot moving around in a complex environment. Fundamental interaction constraints with a real environment are simulated for the robot by visual scan and creation of an internal environmental model. The programming system used in constructing the problem solving system for the simulated robot and its simulated world environment is outlined together with the task that the system is capable of performing. A very general framework for understanding the relationship between an observed behavior and an adequate description of that behavior is included.
    Keywords: COMPUTERS
    Type: NASA-CR-129526 , BBN-2316
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Robot, computer problem solving system (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The TENEX computer system, the ARPA network, and computer language design technology was applied to support the complex system programs. By combining the pragmatic and theoretical aspects of robot development, an approach is created which is grounded in realism, but which also has at its disposal the power that comes from looking at complex problems from an abstract analytical point of view.
    Keywords: COMPUTERS
    Type: NASA-CR-135899 , BBN-2646
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Robot computer problem solving system (1972)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Continuing research is reported in a program aimed at the development of a robot computer problem solving system. The motivation and results are described of a theoretical investigation concerning the general properties of behavioral systems. Some of the important issues which a general theory of behavioral organization should encompass are outlined and discussed.
    Keywords: COMPUTERS
    Type: NASA-CR-127445 , QPR-3
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Robot computer problem solving system (1974)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The conceptual, experimental, and practical phases of developing a robot computer problem solving system are outlined. Robot intelligence, conversion of the programming language SAIL to run under the THNEX monitor, and the use of the network to run several cooperating jobs at different sites are discussed.
    Keywords: COMPUTERS
    Type: NASA-CR-138395 , AI-10 , BBN-2792
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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