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1.
L. A. Dickey 《Communications in Mathematical Physics》1995,167(1):227-233
A short proof is given to the fact that the additional symmetries of the KP hierarchy defined by their action on pseudodifferential operators according to Fuchssteiner-Chen-Lee-Lin-Orlov-Shulman coincide with those defined by their action on -functions as Sato's Bäcklund transformations. A new simple formula for the generator of additional symmetries is also presented. 相似文献
2.
L. A. Dickey 《Communications in Mathematical Physics》1983,87(4):505-513
We deal with a form of the chiral equation, for which first integrals can be written explicitly. For these equations, we find a symplectic structure, the Lagrangian and first integrals in involution. 相似文献
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The 93Nb(p, d)92Nb reaction was studied at a proton energy of 26.3 MeV. Angular distributions were obtained for outgoing deuterons to 37 states in 92Nb up to an excitation energy of 4.2 MeV. The results were compared with DWBA calculations to extract l-values and spectroscopic factors. Fourteen previously unobserved l = 1 transitions were measured. 相似文献
5.
Chad?A?Dickey Marcia?N?Gordon Donna?M?Wilcock Donna?L?Herber Melissa?J?Freeman Dave?MorganEmail author 《BMC neuroscience》2005,6(1):7
Background
The pathology of Alzheimer's disease (AD) is comprised of extracellular amyloid plaques, intracellular tau tangles, dystrophic neurites and neurodegeneration. The mechanisms by which these various pathological features arise are under intense investigation. Here, expanding upon pilot gene expression studies, we have further analyzed the relationship between Na+/K+ ATPase and amyloid using APP+PS1 transgenic mice, a model that develops amyloid plaques and memory deficits in the absence of tangle formation and neuronal or synaptic loss. 相似文献6.
Kai Chang Michael A. Pollock Michael K. Skrehot G. Dickey Jerry Suddath 《International Journal of Infrared and Millimeter Waves》1989,10(1):1-19
A 35 GHz millimeter-wave radar system has been studied for space debris tracking. The objective is to track the particles ranging in size from 4 mm to 80 mm up to a range of 25 km. The system requires various state-of-the-art technologies including phased arrays, monopulse tracking, pulse compression, high power transmitters, low noise receivers, and pulse integration signal processing techniques. 相似文献
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L. A. Dickey 《Letters in Mathematical Physics》1995,34(4):379-384
An explanation for the so-called constrained hierarchies is presented by linking them with the symmetries of the KP hierarchy. While the existence of ordinary symmetries (belonging to the hierarchy) allows one to reduce the KP hierarchy to the KdV hierarchies, the existence of additional symmetries allows one to reduce the KP to the constrained KP. 相似文献
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S. A. Dickey J. J. Kraushaar R. J. Peterson 《Zeitschrift für Physik A Hadrons and Nuclei》1985,320(4):649-654
Inelastic scattering of 35 MeV alpha particles from7Li was used to induce the five known inelastic excitations. A collective coupled channel analysis yielded deformations for each transition and isoscalar quadrupole reduced transition rates were determined for each. The strong-coupling rotational model was found to agree closely with the results for the states associated with the ground state band, but the higher states are excited mainly by a two-step mechanism. 相似文献