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  • 1
    Electronic Resource
    Electronic Resource
    Classical extended conformal algebras associated with constrained KP hierarchy (1995)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 36 (1995), S. 2959-2971 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The conformal property of the second Hamiltonian structure of constrained KP hierarchy derived by Oevel and Strampp is examined. It is found that it naturally gives a family of nonlocal extended conformal algebras. Two examples of such algebras are given and it is found that they are similar to Bilal's V algebra. By taking a gauge transformation one can map the constrained KP hierarchy to Kupershmidt's nonstandard Lax hierarchy. The second Hamiltonian structure in this representation is considered. It is shown that after mapping the Lax operator to a pure differential operator the second structure becomes the sum of the second and the third Gelfand–Dickey brackets defined by this differential operator. The corresponding conformally covariant form of this differential operator is also given. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.531004
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  • 2
    Electronic Resource
    Electronic Resource
    THE ASSOCIATION BETWEEN ALPHA RHYTHM PROPAGATION TIME AND LEVEL OE AROUSAL (1968)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 4 (1968), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Alpha waves in the EEG occur with a time delay in the anteroposterior direction. The hypothesis that this time delay is associated with level of arousal was tested. Alpha time delay was determined from covariance functions and level of arousal from palmar skin conductance levels. The results support the hypothesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1968.tb02772.x
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  • 3
    Electronic Resource
    Electronic Resource
    Alpha Rhythm in the Blind (1971)
    [s.l.] : Nature Publishing Group
    Nature 232 (1971), S. 134-134 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have re-examined the eyeless patient described by Shaw, Foley and Blowers3 and find that there are present, across the empty orbits, standing potentials which behave in a manner similar to the normal corneo-retinal potential. When the patient was asked, "Please look to the left and then to the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/232134b0
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  • 4
    Electronic Resource
    Electronic Resource
    An alternative explicit construction of N-soliton solutions in 1+1 dimensions (1991)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 32 (1991), S. 1737-1743 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: Using the special Riemann-problem technique of Zakharov et al. [Sov. Phys. JETP 47, 1017 (1978)], an explicit N-step Bäcklund transformation is derived for a class of 1+1-dimensional nonlinear evolution equations, thus providing an alternative explicit expression of their N-soliton solutions which no longer involves computations of the intermediate solutions, nor leaves any expansion of N×N determinants (and their differentiation) to be done.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.529235
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  • 5
    Electronic Resource
    Electronic Resource
    Further Remains of a Sterkfontein Ape (1939)
    [s.l.] : Nature Publishing Group
    Nature 143 (1939), S. 117-117 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE discovery at Sterkfontein by Dr. Robert Broom of new fossil anthropoid apes has created such widespread interest that it is desirable to report immediately on all new evidence that may come to hand. MESIAL AND OCCLUSAL VIEWS OF THE NEW TOOTH DISCOVERED AT STERKFONTEIN Since March ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/143117b0
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  • 6
    Electronic Resource
    Electronic Resource
    Solving the KP hierarchy by gauge transformations (1992)
    Springer
    Communications in mathematical physics 149 (1992), S. 263-278 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract We show that it is convenient to use “gauge” transformations (sometimes called explicit Bäcklund transformations) to generate new solutions for the KP hierarchy. Two particular kinds of gauge transformation operators, constructed out of the initial wave functions, are of fundamental importance in this approach. Through such gauge transformations, a very simple formula for the tau-function is obtained, encompassing and unifying all kinds of existing solutions. The corresponding free fermion representation and Baker functions for the new τ function can also be constructed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02097625
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  • 7
    Electronic Resource
    Electronic Resource
    A technique for analogue multiplication and its application to the measurement of correlation functions (1967)
    Springer
    Medical & biological engineering & computing 5 (1967), S. 607-611 
    Details
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02474255
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  • 8
    Electronic Resource
    Electronic Resource
    An EEG signal generator with variable time delayed output (1971)
    Springer
    Medical & biological engineering & computing 9 (1971), S. 71-73 
    Details
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02474406
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  • 9
    Electronic Resource
    Electronic Resource
    On the application of correlation theory to signal analysis (1968)
    Springer
    Medical & biological engineering & computing 6 (1968), S. 453-455 
    Details
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02476072
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  • 10
    Electronic Resource
    Electronic Resource
    Viscoelastic properties of epoxy-diamine networks (1969)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-2: Polymer Physics 7 (1969), S. 753-762 
    Details
    ISSN: 0449-2978
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Eight epoxy-diamine networks have been formed, diamines with 2 to 12 methylene groups being used as curing agents. Dynamic mechanical tests revealed four transition regions in the dynamic loss modulus/temperature relationship. Two possible explanations for the relaxation of the glycidyl portion of the structure are proposed. One of the relaxations could be due to the breakdown of hydrogen bonds through the hydroxyl and ether groups. The second could be ascribed to the relaxation of the unbonded glycidyl groups or a second relaxation of the glycidyl groups after the breakdown of the hydrogen bonds.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1969.160070501
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