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  • 2000-2004  (1)
  • 1995-1999  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Constructive approximation 11 (1995), S. 321-329 
    ISSN: 1432-0940
    Keywords: 30B70 ; 40A15 ; Continued fractions ; Convergence regions ; Separation results
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We prove that the oval convergence theorem for continued fractionsK(a n /1) follows from the uniform parabola theorem and from the uniform limacon theorem. Thus we are able to deduce that the ovals are uniform convergence regions and give estimates for the speed of convergence. Certain separation properties of the ovals are also established.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A novel design for an airborne NOy converter was implemented, characterized in the laboratory, and used extensively for in situ tropospheric and stratospheric measurements of total reactive nitrogen (NOy). During field deployments, the converter is mounted outside the aircraft fuselage, avoiding the need for an inlet line. In flight, the converter can be calibrated by the addition of standard gases close to the sample inlet, compensating for any changes in the instrument sensitivity caused by changing operating conditions. The system has been used successfully during several Stratosphere Troposphere Experiments by Aircraft Measurements campaigns in the lowermost stratosphere and upper troposphere for the measurement of total reactive nitrogen. The detection limit of the system is approximately 100 pptv for 10 s integrated data (2σ). The precision, deduced from the reproducibility of the in-flight calibrations, is 7% and the accuracy is about 30%. Laboratory studies demonstrate that interference from HCN, NH3, and CH3CN is negligible for background conditions. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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