ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
Sammlung
Schlagwörter
Verlag/Herausgeber
Sprache
Erscheinungszeitraum
  • 1
    Monographie ausleihbar
    Monographie ausleihbar
    Tolerierung von Maßen und Maßketten im Austauschbau (1984)
    Berlin : Verl. Technik
    Details Verfügbarkeit
    Signatur: O 5977
    Materialart: Monographie ausleihbar
    Seiten: 283 S.
    Ausgabe: 1. Aufl.
    Serie: Messtechnik
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    BUCH
    Link zum Bibliothekskatalog
    get availability status
  • 2
    facet.materialart.
    Unbekannt
    Von dynamischen Systemen zur Brownschen Bewegung (1988)
    Aachen : Rheinisch-Westfälische Technische Hochschule
    Details Verfügbarkeit
    Signatur: O 7114
    Seiten: 112 S.
    Sprache: Deutsch
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    BUCH
    Link zum Bibliothekskatalog
    get availability status
  • 3
    Digitale Medien
    Digitale Medien
    The dissociation of HNO. I. Potential energy surfaces for the X˜ 1A′, A˜ 1A″, and a˜ 3A″ states (1997)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 6603-6615 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: Three-dimensional potential energy surfaces for the X˜ 1A′, A˜ 1A′′, and a˜ 3A′′ states of HNO have been calculated at the multireference configuration interaction (MRCI) level of ab initio theory. Energy points are calculated at 1728 molecular configurations, predominantly sampling the HNO well and the H+NO product channel regions. Energies between grid points are obtained by interpolation with a three-dimensional cubic spline. The well depths are 2.14, 1.27, and 0.38 eV for X˜ 1A′, a˜ 3A′′, and A˜ 1A′′, respectively. Saddle points to inversion, isomerization, and dissociation are reported and their importance discussed to relevant processes. The HNO(X˜ 1A′) potential energy surface is purely attractive along its minimum energy path to ground-state products, whereas the a˜ 3A′′ and A˜ 1A′′ states have barriers of 0.21 and 0.50 eV, respectively. Vibrational term values and rotational constants for HNO and DNO are reported for the fundamental vibrations for all three electronic states. Where comparison with experimental data is possible, the agreement is satisfactory. The three potential energy surfaces are appropriate to study the predissociation dynamics in the A˜ 1A′′ state and the unimolecular dissociation in the X˜ 1A′ state. © 1997 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.475163
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Highly excited vibrational states of HCP and their analysis in terms of periodic orbits: The genesis of saddle-node states and their spectroscopic signature (1997)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 9818-9834 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We present quantum mechanical bound-state calculations for HCP(X˜) using an ab initio potential energy surface. The wave functions of the first 700 states, corresponding to energies roughly 23 000 cm−1 above the ground vibrational state, are visually inspected and it is found that the majority can be uniquely assigned by three quantum numbers. The energy spectrum is governed, from the lowest excited states up to very high states, by a pronounced Fermi resonance between the CP stretching and the HCP bending mode leading to a clear polyad structure. At an energy of about 15 000 cm−1 above the origin, the states at the lower end of the polyads rather suddenly change their bending character. While all states below this critical energy avoid the isomerization pathway, the states with the new behaviour develop nodes along the minimum energy path and show large-amplitude motion with H swinging from the C- to the P-end of the diatomic entity. How this structural change can be understood in terms of periodic classical orbits and saddle-node bifurcations and how this transition evolves with increasing energy is the focal point of this article. The two different types of bending motion are clearly reflected by the rotational constants. The relationship of our results with recent spectroscopic experiments is discussed. © 1997 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.474226
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    Photodissociation of ozone in the Chappuis band. II. Time-dependent wave-packet calculations and interpretation of diffuse vibrational structures (1997)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 7296-7313 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We present time-dependent wave-packet calculations describing the photodissociation of ozone in the Chappuis band, which evolves in the two lowest states of 1A′′ symmetry. The calculations are performed in the diabatic representation and include the coupling between the two relevant states. All three nuclear degrees of freedom are taken into account. The two potential-energy surfaces, the coupling potential, and the two transition-dipole-moment functions with the electronic ground state have been calculated previously by ab initio methods [Woywod et al., J. Chem. Phys. 107, 7282 (1997)]. The coupling between the two diabatic states is exceedingly strong, resulting in very fast dissociation into O+O2 on the time scale of only one symmetric stretch period. A small portion of the initially created wave packet is temporarily trapped leading to three tiny recurrences, which reflect basically symmetric stretch motion plus some amount of bending motion. The experimentally observed diffuse vibrational structures superimposed to the broad absorption spectrum are satisfactorily reproduced and discussed both in the time-independent and the time-dependent picture of spectroscopy. In view of the very short lifetime in the excited states, the correspondingly large widths of the diffuse structures, and the participation of all three vibrational modes we conclude that an unique assignment in terms of three quantum numbers is not possible. The main structures are due to symmetric stretch excitation, but bending and even asymmetric stretch motion are also involved. A one-state model, in which only the upper (bound) adiabatic potential is employed, provides a qualitatively correct explanation of the absorption spectrum and the diffuse structures. © 1997 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.474970
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 6
    Digitale Medien
    Digitale Medien
    Ergodic properties of a kicked damped particle (1990)
    Springer
    Communications in mathematical physics 130 (1990), S. 51-60 
    Details
    ISSN: 1432-0916
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik , Physik
    Notizen: Abstract We investigate a class of nonlinear dynamical systems describing the movement of a particle in a viscous medium under the influence of a kick force. These systems can be regarded as a generalization of the Langevin approach to Brownian motion in the sense that the fluctuating force on the particle is not Gaussian white noise but an arbitrary non-gaussian process generated by a nonlinear dynamical system. We investigate how certain properties of the force (periodicity, ergodicity, mixing property) transfer to the velocity of the particle. Moreover, the relaxation properties of the system are analysed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02099873
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 7
    Digitale Medien
    Digitale Medien
    Periodic orbits and vibrational wave functions for DCP: nonlinear resonances in isotopically substituted molecules (1998)
    Springer
    Theoretical chemistry accounts 100 (1998), S. 147-153 
    Details
    ISSN: 1432-2234
    Schlagwort(e): Key words: Vibrational spectroscopy ; Highly excited states ; Periodic orbits ; Bifurcations
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract. We investigate, by means of classical and quantum mechanics, how isotopic substitution (H/D) affects the vibrational dynamics of HCP. The analysis of periodic orbits, including the location of the principal families as well as saddle node bifurcations, reveals a totally different picture for the phase-space resonance structure for HCP and DCP. While HCP is characterized by a 1:2 resonance between the CP stretch and the bending mode, DCP shows a 1:2 resonance between the two stretching degrees of freedom. Saddle node bifurcations, which are associated with large-amplitude motion of H/D moving from the C- to the P-end, appear at considerably higher energies in DCP than in HCP. These results are in accord with exact quantum mechanical calculations of the vibrational levels.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002140050375
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 8
    Digitale Medien
    Digitale Medien
    From the Perron-Frobenius equation to the Fokker-Planck equation (1995)
    Springer
    Journal of statistical physics 79 (1995), S. 875-894 
    Details
    ISSN: 1572-9613
    Schlagwort(e): Perron-Frobenius equation ; Fokker-Planck equation ; scaling limits ; maps of Kaplan-Yorke type ; corrections to Gaussian behavior ; Ω-expansion
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract We show that for certain classes of deterministic dynamical systems the Perron-Frobenius equation reduces to the Fokker-Planck equation in an appropriate scaling limit. By perturbative expansion in a small time scale parameter, we also derive the equations that are obeyed by the first- and second-order correction terms to the Fokker-Planck limit case. In general, these equations describe non-Gaussian corrections to a Langevin dynamics due to an underlying deterministic chaotic dynamics. For double-symmetric maps, the first-order correction term turns out to satisfy a kind of inhomogeneous Fokker-Planck equation with a source term. For a special example, we are able solve the first- and second-order equations explicitly.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02181207
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 9
    Digitale Medien
    Digitale Medien
    Mehrkriterielle Fähigkeitsbewertung (1998)
    Springer
    OR spectrum 20 (1998), S. 179-187 
    Details
    ISSN: 1436-6304
    Schlagwort(e): Schlüsselwörter: Qualitätssicherung – Maschinen- und Prozeßfähigkeit – Mehrkriterielle Entscheidung – Statistische Methoden – Fuzzy Sets ; Key words: Quality management – Capability indices – Multicriteria decision making – Statistical methods – Fuzzy sets
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik , Wirtschaftswissenschaften
    Beschreibung / Inhaltsverzeichnis: Summary. Introduction of modern quality management systems in branches as well as between several branches, especially in the metalworking industry, leads to customer-supplier-agreements with fixed minimal values of capability indices for machines, processes and equipment. But, problems can be observed in case that there are more then one quality characteristic or if the probability distribution is not normal and in definitions of traditional capability indices functionality of produced workpieces is not well considered as well. New possibilities for evaluation of complex characteristic patterns, definitions of which are taking into account the multicriterial and statistical properties of the evaluation problem, are shown in this paper.
    Notizen: Zusammenfassung. Die Einführung und Durchsetzung von Qualitätsmanagementsystemen sowohl in den Branchen als auch branchenübergreifend, insbesondere in der metallverarbeitenden Industrie, ist damit verbunden, daß in den Kunden-Lieferanten- Beziehungen Vereinbarungen über geforderte Fähigkeitskennziffern der Maschinen und Anlagen getroffen werden. Dabei treten Probleme auf, wenn mehrere Qualitätsmerkmale gleichzeitig betrachtet werden müssen und wenn die Merkmale nicht normalverteilt sind. Außerdem berücksichtigen die traditionellen Fähigkeitskennziffern die Funktionalität der gefertigten Werkstücke entweder gar nicht oder in nur ungenügender Weise. Vorgestellt werden neue Möglichkeiten zur Bewertung komplexer Merkmalsmuster, die sowohl dem multikriteriellen als auch dem zufälligen Charakter der Fähigkeitsbewertung Rechnung tragen und die genannten Nachteile vermeiden.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002910050066
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 10
    Digitale Medien
    Digitale Medien
    Mehrkriterielle Fähigkeitsbewertung (1998)
    Springer
    OR spectrum 20 (1998), S. 179-187 
    Details
    ISSN: 1436-6304
    Schlagwort(e): Qualitätssicherung ; Maschinen- und Prozeßfähigkeit ; Mehrkriterielle Entscheidung ; Statistische Methoden ; Fuzzy Sets ; Quality management ; Capability indices ; Multicriteria decision making ; Statistical methods ; Fuzzy sets
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik , Wirtschaftswissenschaften
    Beschreibung / Inhaltsverzeichnis: Summary Introduction of modern quality management Systems in branches as well as between several branches, especially in the metalworking industry, leads to customer-supplier-agreements with fixed minimal values of capability indices for machines, processes and equipment. But, problems can be observed in case that mere are more then one quality characteristic or if the probability distribution is not normal and in definitions of traditional capability indices functionality of produced workpieces is not well considered as well. New possibilities for evaluation of complex characteristic patterns, definitions of which are taking into account the multicriterial and statistical properties of the evaluation problem, are shown in this paper.
    Notizen: Zusammenfassung Die Einführung und Durchsetzung von Qualitätsmanagementsystemen sowohl in den Branchen als auch branchenübergreifend, insbesondere in der metallverarbeitenden Industrie, ist damit verbunden, daß in den Kunden-Lieferanten-Beziehungen Vereinbarungen über geforderte Fähigkeitskennziffern der Maschinen und Anlagen getroffen werden. Dabei treten Probleme auf, wenn mehrere Qualitätsmerkmale gleichzeitig betrachtet werden müssen und wenn die Merkmale nicht normalverteilt sind. Außerdem berücksichtigen die traditionellen Fähigkeitskennziffern die Funktionalität der gefertigten Werkstücke entweder gar nicht oder in nur ungenügender Weise. Vorgestellt werden neue Möglichkeiten zur Bewertung komplexer Merkmalsmuster, die sowohl dem multikriteriellen als auch dem zufälligen Charakter der Fähigkeitsbewertung Rechnung tragen und die genannten Nachteile vermeiden.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01539767
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...