ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Explicit inversive congruential pseudorandom numbers: the compound approach (1993)
    Springer
    Computing 51 (1993), S. 175-182 
    Details
    ISSN: 1436-5057
    Keywords: 65C10 ; 11K45 ; Uniform pseudorandom numbers ; explicit inversive congruential method ; prime modulus ; statistical independence ; discrepancy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Die explizite Inversionsmethode mit Primzahl-Modul zur Erzeugung gleichverteilter Pseudozufallszahlen besitzt einige vielversprechende Eigenschaften. Gewöhnlich ist es jedoch notwendig, diese Pseudozufallszahlen-Generatoren mit mehrfacher Rechengenauigkeit zu implementieren. In dieser Arbeit wird eine zusammengesetzte Version der expliziten Inversionsmethode eingeführt, die diesen Nachteil überwindet. Es wird gezeigt, daß die erzeugten Folgen sehr attraktive statistische Unabhängigkeitseigenschaften besitzen.
    Notes: Abstract The explicit inversive congruential method with prime modulus for generating uniform pseudorandom numbers has several very promising properties. However, an implementation in multiprecision of these pseudorandom number generators is usually necessary. The present paper introduces a compound version of the explicit inversive congruential method, which overcomes this disadvantage. It is shown that the generated sequences have very attractive statistical independence properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02243851
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Resonance-Raman-induced Kerr effect in molecules in the ground and electronically excited states (1981)
    Springer
    Optical and quantum electronics 13 (1981), S. 19-34 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A theoretical investigation of the resonantly enhanced, Raman-induced Kerr effect (resonance-RIKE) is given, taking into account the resonance absorption of the laser wave and the population of excited electronic states. Line shape, maximum amplification and optimum conditions for the resonance-RIKE from the ground state as well as for the resonance-RIKE from an initial excited electronic state are discussed in detail. The possibility is studied of applying this method to the investigation of the vibrational structure of excited electronic states in molecules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620027
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Shaping and shortening of short light pulses by absorption from excited levels (1975)
    Springer
    Optical and quantum electronics 7 (1975), S. 337-344 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract It is proposed to shape pulses by a combination of a saturable single-photon absorber and a two-step absorber in which an absorption from higher electronic levels populated by two-photon excitation is used. Pulse formation and shortening by means of this combination is calculated on the basis of balance equations. Thereby pulses with steeper front and back sides and of changeable duration are obtained, whereas the application of a saturable single-photon absorber alone gives only a significant suppression of the leading edge of the pulse. During a single passage through such a combination of absorbers a pulse shortening up to a factor of five may be obtained and the maximum of the pulse is only slightly depleted (to about 77%).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619831
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The influence of phase fluctuations and phase modulation on two-photon fluorescence (1978)
    Springer
    Optical and quantum electronics 10 (1978), S. 195-203 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract In the present paper the two-photon fluorescence (TPF) quenching produced by ruby lasers in dye is calculated on the basis of an electronic energy level system adapted for the special conditions of Rhodamine 6G. The model used here takes into consideration the action of competing one-photon processes. It will be shown that the reversed profile of TPF quenching in the overlap region is produced by the superposition of pulses with a time-dependent fluctuating phase as well as with a determinate quadratically time-dependent phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01208851
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Theory of the statistical properties of ultra-short pulses generated by a passively mode-locked solid-state laser (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 119-132 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The evolution of ultra-short pulses from noise in a passively mode-locked solid-state laser is treated. The statistical properties of the laser field, such as correlation functions, the mean pulse shape and its fluctuations, are investigated. The maximum intensity and the width of the pulse train are estimated taking account of the amplification saturation. As an example of the application of the results to non-linear optics, TPF traces are calculated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624390
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Applications of group technology in distributed manufacturing (1996)
    Springer
    Journal of intelligent manufacturing 7 (1996), S. 271-291 
    Details
    ISSN: 1572-8145
    Keywords: Group technology ; design evaluation ; distributed manufacturing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper discusses the systematic use of group technology (GT) to support important activities of distributed manufacturing including design indexing and retrieval, variant design, variant process planning, and design critiquing. We introduce an Object-Oriented Group Technology (OOGT) scheme, which captures design data critical to the product's manufacture. Our approach uses a STEP-based product information model to generate the OOGT data automatically. The latter are then used to conduct an efficient search for similar products manufactured by selected companies and to retrieve and use information about the manufacturing processes and performance of these similar products.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00124829
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Coherent anti-Stokes resonance Raman scattering (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 161-172 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The intensity of coherent anti-Stokes resonance Raman scattering (CARRS) is calculated taking into account the resonant absorption of laser and anti-Stokes waves and changes in the molecule population. The resonant absorption causes an alteration of the phase of the laser wave leading to a decrease and periodic behaviour of the anti-Stokes intensity. This phase change can be compensated by the choice of a definite wave vector mismatchΔK, which determines the optimum condition for the CARRS. The optimum angle between the Stokes and the laser propagation direction and the optimum cell length are calculated. The line shape of the CARRS is discussed and used for the explanation of the observed dependence of the CARRS spectra on the laser intensity and the frequency and on the molecule number density. In the case of a O-O excitation the vibrational frequencies of the ground and the excited level are generated simultaneously in the CARRS spectra.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624395
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    On the NiMoO4 oxidative dehydrogenation of propane to propene: some physical correlations with the catalytic activity (1991)
    Springer
    Catalysis letters 10 (1991), S. 181-191 
    Details
    ISSN: 1572-879X
    Keywords: Propane dehydrogenation ; nickel molybdate ; NiMoO4 propene formation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The α- and β-phases of NiMoO4 have been investigated with different techniques (X-ray diffraction, electrical conductivity, IR spectroscopy) in order to tentatively rationalise the different catalytic activities observed in the oxidative dehydrogenation of propane to propene. XRD analyses have shown that at 595 ° C, the β-phase is already present but a temperature of ∼ 700 ° C is required to obtain a full conversion into a pure β-phase. Electrical conductivity showed the presence of anionic vacancies. It is proposed that propene is formed by the reaction of propane with surface O2- anions. The β-phase is almost twice more selective in propene formation than the α-phase for comparable conversion at identical temperatures. This could derive from different oxygen environments on the active catalytic site.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00772070
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Theory of the synchronously pumped picosecond dye laser (1982)
    Springer
    Applied physics 27 (1982), S. 27-37 
    Details
    ISSN: 1432-0649
    Keywords: 42.55 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The circulation of a synchronously mode locked dye laser pulse in a linear cavity configuration containing a dye cell as an active medium and a bandwidth-limiting element is treated. The condition that the pulse shape reproduces after each cavity round-trip provides a nonlinear integro-differential equation for the steady-state pulse shape. For the solution of this equation an approximate method, not limited to small pulse energies, is given and the pulse duration, intensity, energy, asymmetry of the pulse shape, stable regions and other interesting parameters are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697293
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Theory of passively mode-locked cw dye lasers (1982)
    Springer
    Applied physics 27 (1982), S. 105-113 
    Details
    ISSN: 1432-0649
    Keywords: 42.55 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The circulation of an ultrashort light pulse in a continuously pumped modelocked dye laser with a linear cavity configuration containing the active dye, the saturable absorber and a bandwidth-limiting elements is treated. The steady-state condition that the pulse shape reproduces after each cavity round-trip leads to a nonlinear integro-differential equation for this pulse shape. An approximate method for the solution of this equation not limited to the case of low laser gain and small pulse energies is given. The stable single pulse region and characteristic pulse parameters, as energy, duration, intensity and asymmetry, are considered in dependence on the laser parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697557
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...