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  • Articles  (330,607)
  • Elsevier  (208,520)
  • Springer  (74,994)
  • Springer Nature  (36,344)
  • American Meteorological Society  (10,404)
  • American Physical Society (APS)
  • American Society of Mechanical Engineers
  • 2000-2004  (306,489)
  • 1930-1934
  • Physics  (277,979)
  • Energy, Environment Protection, Nuclear Power Engineering  (48,136)
  • Electrical Engineering, Measurement and Control Technology  (15,955)
Collection
  • Articles  (330,607)
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Keywords
Publisher
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Year
Journal
Topic
  • 1
    Electronic Resource
    Electronic Resource
    A measurement of τ polarization in Z^0 decays (1992-8977)
    Amsterdam : Elsevier
    Physics Letters B 294 (1992), S. 466-478 
    Details
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0370-2693(92)91549-O
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Measurement of the average lifetime of b hadrons (1993-4325)
    Amsterdam : Elsevier
    Physics Letters B 317 (1993), S. 474-484 
    Details
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0370-2693(93)91027-K
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  • 3
    Electronic Resource
    Electronic Resource
    The recovery of distorted bandlimited almost-periodic signals (2000)
    Springer
    Circuits, systems and signal processing 19 (2000), S. 385-398 
    Details
    ISSN: 1531-5878
    Keywords: Recovery of distorted signals ; almost periodic signals ; bandlimited signals ; nonlinear systems ; nonlinear distortion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract It is shown that thePQ theorem can be used to solve a certain signal recovery problem in which the transmitted and received signals are almost periodic functions. In this problem the signal to be recovered, which is bandlimited, is nonlinearly distorted and then bandlimited to the original band. Related signal recovery results are also given. These related results, unlike thePQ theorem, are applicable in settings in which the underlying signal space is not a Hilbert space or even a space that is complete.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01196153
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  • 4
    Electronic Resource
    Electronic Resource
    Minimal realization for lifted periodic filters (2000)
    Springer
    Circuits, systems and signal processing 19 (2000), S. 411-421 
    Details
    ISSN: 1531-5878
    Keywords: Periodic filters ; lifted model ; minimal realization ; reachability ; observability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Practical applications in signals and systems often deal with lifted models of periodic digital filters, to which well-known methods and computing software for linear time-invariant (LTI) systems can be applied in the analysis and synthesis of periodic filters. When the design of a periodic filter is based on the lifted model, the resultant filter is usually in the lifted LTI form and needs to be further converted into the periodic form for implementational and computational purposes. In this paper, we present a computational procedure for obtaining a minimal realization of periodic digital filters from the fifted model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01196155
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  • 5
    Electronic Resource
    Electronic Resource
    Robust mixed-order root-music (2000)
    Springer
    Circuits, systems and signal processing 19 (2000), S. 451-466 
    Details
    ISSN: 1531-5878
    Keywords: Direction finding ; high-order statistics ; root-MUSIC ; robustness
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Several typical situations unfavorable for second-order direction-finding methods are known to be easily overcome by means of higher-order techniques. In turn, in typical situations unfavorable for higher-order methods, second-order algorithms often perform quite well. Therefore, appropriately combining covariance- and cumulant-based techniques into one scheme, it is possible to obtain an algorithm with an improved robustness. In this paper, we propose two modifications of such combined methods, referred to asmixed-order root-MUSIC.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01196158
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  • 6
    Electronic Resource
    Electronic Resource
    Assignment of the 5d6s-5d6p transitions in the PtIX ion: Comparison of two calculations of the 5d 2, 5d6s, and 5d6p configurations in the ion (2000)
    Springer
    Optics and spectroscopy 88 (2000), S. 11-16 
    Details
    ISSN: 1562-6911
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The spectrum of platinum is studied in the region from 250 to 1250 Å. The twenty-two 5d6s-5d6p spectral lines of the PtIX are assigned. All levels of the 5d6s configuration are found. The assignment of the previously known 5d6p levels is confirmed and their positions are refined. The 5d 2, 5d6s, and 5d6p configurations are theoretically described by the method of orthogonal operators. These calculations are compared with the data obtained by a conventional method using the Cowan program.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.626738
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  • 7
    Electronic Resource
    Electronic Resource
    Resonant multiphoton ionization of the 1s state of a hydrogen atom in a strong laser field (2000)
    Springer
    Optics and spectroscopy 88 (2000), S. 1-6 
    Details
    ISSN: 1562-6911
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The process of resonant multiphoton ionization of a hydrogen atom in the ground 1s state is studied by direct numerical integration of the nonstationary Schrödinger equation for a quantum system in an electromagnetic field. The dependence of photoionization probability on the radiation intensity is found to be nonmonotonic. It is established that the minima of ionization correspond to multiphoton resonances between the ground state and one of the excited (Rydberg) atomic states perturbed by the laser field. It is shown that ionization is suppressed due to rearrangement of Rydberg states in a strong electromagnetic field and is accompanied by efficient Raman Λ transitions, which connect a set of closely lying Rydberg states via the continuum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.626736
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  • 8
    Electronic Resource
    Electronic Resource
    Diffraction of an ultrashort pulse by a slit (2000)
    Springer
    Optics and spectroscopy 88 (2000), S. 96-101 
    Details
    ISSN: 1562-6911
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An analysis of a specific feature of the interaction of an ultrashort pulse with a slit is made. Analytical expressions for a monochromatic wave in the form of an ultrashort pulse diffracted by an infinite slit are obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.626753
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  • 9
    Electronic Resource
    Electronic Resource
    Transformation of spatial modulation of a light field into amplitude modulation in the interaction of a superposition of transverse modes of a He-Ne laser with iodine-127 vapors (2000)
    Springer
    Optics and spectroscopy 88 (2000), S. 113-117 
    Details
    ISSN: 1562-6911
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The observation of “spatial-modulation” resonances of saturated absorption in the interaction of iodine-127 vapors with a superposition of frequency-nondegenerate TEM01 and TEM10 transverse modes of a linear laser is reported. The modulation of the total radiation power of the probing wave, recorded at twice the beating frequency of transverse modes of the laser, is interpreted to be the result of the transformation of modulation of the spatial distribution of the field into its amplitude modulation under the action of nonlinearly absorbing iodine vapors. Resonances of saturated absorption of the weak line R(127)11-5 of iodine-127 (633 nm) in an extracavity cell are observed by the method proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.626756
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  • 10
    Electronic Resource
    Electronic Resource
    Narrow saturated absorption resonances in the transmission band of an active interferometer (2000)
    Springer
    Optics and spectroscopy 88 (2000), S. 127-131 
    Details
    ISSN: 1562-6911
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The shape of the transmission band of an active interferometer, a resonator with amplification and absorption cells excited by an external signal, is studied. Upon tuning the external signal frequency, the narrow saturated absorption resonances can be observed in the transmission band of the interferometer. It is shown that, by varying the gain, the resonance absorption amplitude can be compensated for one order of smallness in pressure. The effect of amplitude and frequency noises of the external signal on the results obtained is studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.626759
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