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  • Springer  (386)
  • American Physical Society  (340)
  • Springer Nature  (141)
  • 1
    Electronic Resource
    Electronic Resource
    Dependence of the parity-condition parameter on the combat-intensity parameter for Lanchester-type equations of modern warfare (1980)
    Springer
    OR spectrum 1 (1980), S. 199-205 
    Details
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Description / Table of Contents: Zusammenfassung Diese Arbeit untersucht die Parameter-Abhängigkeit von Ergebnissen kriegerischer Auseinandersetzungen zweier homogener Gegner (insbesondere Vernichtung eingesetzter Kräfte), die mit Gleichungen der Lanchester-Theorie mit zeitabhängigen Verlustraten modelliert werden. Es wurde gezeigt, daß die Vorhersage der Vernichtung von Kräften von sogenannten Paritätsbedingungen nur von Verlustraten abhängen. Neue wichtige Ergebnisse geben Auskunft, wie diese Paritätsbedingungen von der Kampfintensität und der relativen Feuereffektivität der Gegner abhängen. Bisherige analytische Ergebnisse des Autors können Anwendung in einer viel umfangreicheren Art von Verlustraten finden. Diese neuen Ergebnisse erlauben es, daß eine umfangreiche Art von Gleichungen der LanchesterTheorie moderner Kriegsführung mit zeitlicher Feuereffektivitätsveränderung beinahe so leicht untersucht werden können, wie das klassische Modell von Lanchester mit konstanter Verlustrate.
    Notes: Summary This paper studies the parametric dependence of battle outcome (in particular, force annihilation) for combat between two homogeneous forces modelled by Lanchester-type equations of modern warfare with time-dependent attrition-rate coefficients. Force-annihilation prediction has been shown to depend on a so-called parity-condition parameter, which depends on only the attrition-rate coefficients. New important results are given on how the parity-condition parameter depends on the intensity of combat and the relative fire effectiveness of the combatants. Previous analytical results of the author are shown to apply to a much wider class of attrition-rate coefficients. These new results allow a wide class of Lanchester-type equations of modern warfare with temporal variations in fire effectiveness to be studied almost as easily as Lanchester's classic constant-coefficient model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01719341
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  • 2
    Electronic Resource
    Electronic Resource
    The Effect of Gibberellins on Flowering in Roses (1999)
    Springer
    Journal of plant growth regulation 18 (1999), S. 113-119 
    Details
    ISSN: 1435-8107
    Keywords: Key Words. Gibberellins—Recurrent-flowering—Rosa—Seasonal-flowering—GC-MS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. The gibberellins A1, A3, A5, A8, A19, A20, and A29 were identified in vegetative shoot tips of Rosa canina by comparing their mass spectra and Kovats retention indices with those of standards. Most wild roses have a short flowering season of 2–4 weeks in spring, whereas most modern cultivars flower recurrently. `Félicité et Perpétue' is a short-season hybrid from a cross between a wild rose and a recurrent-flowering rose, whereas its sport, `Little White Pet,' flowers recurrently. The concentrations of gibberellins (GAs) were measured in shoot apices of both cultivars. In March (before floral initiation in spring) the concentrations of GA1 and GA3 were respectively threefold and twofold higher in `Félicité et Perpétue' than in `Little White Pet.' In April (after floral initiation) the concentrations of both gibberellins were substantially greater than in March, and concentrations of GA1 and GA3 were, respectively, 17-fold and 12-fold greater in `Félicité et Perpétue' than in `Little White Pet.' It is postulated that, in `Félicité et Perpétue,' floral initiation occurs when concentrations of GAs are low and is inhibited when concentrations of GAs are high, whereas in `Little White Pet' concentrations of GAs remain at permissive levels throughout the growing season. Applications of GA1 and GA3 to axillary shoots in March inhibited floral development in `Félicité et Perpétue' but not in `Little White Pet.' This suggests that the combined concentration of exogenous and endogenous gibberellins might have been raised to inhibitory levels in the former but not in the latter cultivar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00007058
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  • 3
    Electronic Resource
    Electronic Resource
    Hard thermal loops in a gravitational field (1991)
    Springer
    The European physical journal 49 (1991), S. 515-520 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We calculate the high-temperature (T 4) limit of the 3-graviton vertex function, with a single loop of internal scalar particles in thermal equilibrium. We use the analytically continued imaginary-time formalism. We verify a particular case of the Ward identity connecting the 3- and 2-graviton functions. This confirms that there is covariance under general coordinate transformations (which reduce to the identity at infinity). We remark that the ghost-ghost-graviton vertex (with ghost and graviton internal lines) has noT 4 term. This implies that the 3-graviton function with internal graviton (and ghost) lines must satisfy the Ward identity too, so it is possible for it to be proportional to the scalar contribution. We have verified this for that part of the vertex function which is manifestly symmetric and traceless in the six Lorentz indices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01549706
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  • 4
    Electronic Resource
    Electronic Resource
    Fibre-grating pair pulse compression at 1.32μm (1986)
    Springer
    Optical and quantum electronics 18 (1986), S. 423-426 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02041166
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  • 5
    Electronic Resource
    Electronic Resource
    Book reviews (1995)
    Springer
    Optical and quantum electronics 27 (1995), S. 1081-1086 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00292138
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  • 6
    Electronic Resource
    Electronic Resource
    Fibre mopfa source of femtosecond pulses with wavelength tunability from 790 to 830 nm (2000)
    Springer
    Optical and quantum electronics 32 (2000), S. 193-196 
    Details
    ISSN: 1572-817X
    Keywords: frequency doubling ; optical fibre ; Raman scattering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A fibre-optic of sub-150 fs pulse with wavelength tunability from 790 to 830 nm is demonstrated. The output from a gain-switched DFB laser diode at 1552 nm is amplified and compressed in an EDFA generating a soliton-Raman continuum which was then frequency doubled. The output wavelength was tuned over a 40 nm range with very little variation in the pulse duration and output power.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007076824306
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  • 7
    Electronic Resource
    Electronic Resource
    Phase-conjugate reflection through degenerate four-wave mixing in gallium phosphide (1982)
    Springer
    Optical and quantum electronics 14 (1982), S. 81-84 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620915
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  • 8
    Electronic Resource
    Electronic Resource
    Temporal compression of Nd: YAG pulses using chirp compensation (1986)
    Springer
    Optical and quantum electronics 18 (1986), S. 171-174 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02030985
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  • 9
    Electronic Resource
    Electronic Resource
    Optical fibre-grating pulse compressors (1988)
    Springer
    Optical and quantum electronics 20 (1988), S. 95-112 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract This article reviews the current state-of-the-art of optical pulse compressors based on the optical fibre-grating pair. As this technique has become a standard laboratory procedure providing pulses with duration shorter than those directly generated from mode-locked lasers, we review the basic mechanism of the method, the role played by additional non-linear effects (such as stimulated Raman scattering), describe the current results, with emphasis to our own work, and point out the limitations of the technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02098261
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  • 10
    Electronic Resource
    Electronic Resource
    Soliton Raman fibre-ring oscillators (1988)
    Springer
    Optical and quantum electronics 20 (1988), S. 165-174 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Results are presented on the operation and optimization of soliton Raman fibre-ring lasers using a c.w. mode-locked Nd-YAG laser at 1.32μm as the source of 100 ps pump pulses. Various lengths of standard single-mode silica fibre were used, and tunable pulses as short as 100 fs generated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02098268
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