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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 68 (1990), S. 26-32 
    ISSN: 1432-1440
    Keywords: Spectral analysis ; Heart rate variability ; Diabetic subjects ; Diabetic neuropathy ; Orthostatic load
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Spectral analysis of heart rate variability (HRV) was used to assess the autonomic nervous control of cardiac function during orthostatic load in insulin-dependent diabetic patients and healthy subjects. The diabetic patients were divided into three groups: diabetics without neuropathy (group 1), diabetics with peripheral neuropathy (group 2), and diabetics with peripheral and autonomic neuropathy (group 3). Resting mid-frequency (MF, 0.05–0.15 Hz) and respiration-related (RF, power around respiration rate) HRV were significantly lower in group 2 and 3 diabetics than in controls, indicating a reduced parasympathetic nervous system influence on the heart. Standing MF and RF spectral power data were significantly lower in all diabetic groups than in controls, suggesting marked alterations in the autonomic cardiovascular control during a mild physical load not only in symptomatic diabetics but also in patients with no signs and symptoms of neuropathy. The difference between supine and standing MF power, an estimate ofβ-adrenergic influence on the heart, was significantly lower in all diabetic subject groups studied than in controls. This suggests a reduced sympathetic nervous system influence on the heart in diabetic patients. Our data suggest that computerized spectral analysis of HRV during orthostatic load seems to be a very sensitive method of evaluating of the autonomie nervous systems influence on the heart in patients suffering from diabetes niellitus.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of economics 38 (1978), S. 419-430 
    ISSN: 1617-7134
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 3
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    Unknown
    Wien : Periodicals Archive Online (PAO)
    Journal of economics/Zeitschrift für Nazionalökonomie. 38 (1978) 421 
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    OR spectrum 3 (1982), S. 233-237 
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Description / Table of Contents: Summary Subject of this paper is the determination of a distance function defined on the set of observed characteristics of objects (individuals, goods, enterprises etc.). In contrast to the usual approach, where a dissimilarity coefficient exhibiting some more or less desirable properties is chosen, at first conditions to be met by the dissimilarity coefficient are set. Then the class of dissimilarity coefficients that meets these conditions is determined. It is shown, that four such conditions imply the weighted Lr-metric.
    Notes: Zusammenfassung Gegenstand dieses Beitrages ist die Ermittlung von Distanzindizes, die als Maß für die Ähnlichkeit von durch quantitative Merkmalsausprägungen charakterisierbaren Objekten verwandt werden können. Im Gegensatz zu dem üblichen Vorgehen, bei dem ein Distanzindex gewählt wird, der mehr oder weniger wünschenswerte Eigenschaften besitzt, werden zunächst Bedingungen formuliert, die als sinnvoll für den gesuchten Distanzindex angesehen werden. Anschließend wird die Klasse derjenigen Distanzindizes ermittelt, die diesen Bedingungen genügt. Es wird gezeigt, daß die Forderung von vier derartigen Bedingungen die gewichtete Lr-Distanz impliziert.
    Type of Medium: Electronic Resource
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