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  • Electronic Resource  (3)
  • duality theory  (2)
  • Electroretinogram  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Tobacco amblyopia: The effect of treatment on the electroretinogram (1979)
    Springer
    Documenta ophthalmologica 46 (1979), S. 325-331 
    Details
    ISSN: 1573-2622
    Keywords: Electroretinogram ; Hydroxocobalamin ; Tobacco amblyopia ; Visual acuity ; F.M. 100 Hue test
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In seven recently diagnosed and untreated patients with tobacco amblyopia the light and dark adapted electroretinograms were recorded together with visual acuity, central fields and the Farnsworth-Munsell 100-Hue test. After 3 months treatment with injections of hydroxocobalamin all these tests were repeated. An improvement in visual acuity resulted in all cases. A significant reduction in the Farnsworth-Munsell total error score of the seven patients was noted (p 〈 0.01). A significant increase in the amplitude of the light adapted b-wave of the ERG was found (0.01 〈 p 〈 0.02) following the course of hydroxocobalamin injections. No other significant changes in the ERG were demonstrated. It is suggested that the ERG changes demonstrated an improvement in an abnormal biochemical state in those bipolar and perhaps Müller cells of the inner nuclear layer of the retina which make electrophysiological connections chiefly with foveal cones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00142622
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dual extremum principles relating to an optimal filter (1980)
    Springer
    Journal of optimization theory and applications 30 (1980), S. 583-588 
    Details
    ISSN: 1573-2878
    Keywords: Filtering theory ; duality theory ; optimal filters ; dual extremum principles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We obtain here a variational principle characterizing an optimal filter. This variational principle is dual to the one obtained by Berkovitz and Pollard in Ref. 2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01686722
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Sharp dual estimates for conductance of an optimal circular cooling fin (1976)
    Springer
    Journal of optimization theory and applications 19 (1976), S. 565-575 
    Details
    ISSN: 1573-2878
    Keywords: Calculus of variations ; heat transfer ; duality theory ; minimax problems ; differential equations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract A cooling fin attached to a cylinder of circular cross section is considered. We obtain sharp upper and lower estimates for the maximum heat dissipation under the constraint that the total weight of the fin should not exceed a given bound. It is assumed that the boundary of the cylinder has a constant temperature and that Newton's law of cooling holds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00934655
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    Paper (German National Licenses)
    Fulltext
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