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51.
The symmetric transverse vibrations of an elastic circular sandwich plate exposed to thermal and ionizing radiation are studied.
The plate is on an inertialess Winkler foundation. The face layers are describe with the Kirchhoff hypotheses, while the light
core with the hypothesis of broken normal. Analytical solutions are obtained. The numerical results are analyzed 相似文献
52.
53.
V. D. Kubenko Yu. M. Pleskachevskii É. I. Starovoitov D. V. Leonenko 《International Applied Mechanics》2006,42(5):541-547
The natural vibration of an elastic sandwich beam on an elastic foundation is studied. Bernoulli’s hypotheses are used to
describe the kinematics of the face layers. The core layer is assumed to be stiff and compressible. The foundation reaction
is described by Winkler’s model. The system of equilibrium equations is derived, and its exact solution for displacements
is found. Numerical results are presented for a sandwich beam on an elastic foundation of low, medium, or high stiffness
__________
Translated from Prikladnaya Mekhanika, Vol. 42, No. 5, pp. 57–63, May 2006. 相似文献
54.
Using transmission coefficients of anisotropic polyethyleneterphthalate films measured in the range of 700–760 cm−1 the optical functions n(v) and χ(v) are calculated in the film plane and perpendicular to its surface. Its shown that the
asymmetric broadenings and shift of the maximum of the absorption band at 727 cm−1 in the case of oblique incidence of p-polarized radiation are due to the influence of optical anisotropy and dispersion.
A. A. Kuleshov Mogilev State University, 1, Kosmonavtov Str., Mogilev, 212022, Belarus. Translated from Zhurnal Prikladnoi
Spektroskopii, Vol 66, No. 3, p. 409–412, May–June, 1999. 相似文献
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A. P. Starovoitov 《Russian Mathematics (Iz VUZ)》2014,58(9):49-56
We use the Laplace method for investigation of asymptotic properties of the Hermite integrals. In particular, we find asymptotic form for diagonal Hermite-Padé approximations for a system of exponents. Analogous results are obtained for a system of degenerate hypergeometric functions. These theorems supplement the well-known results of F. Wielinnsky, A. I. Aptekarev and others. 相似文献
60.
Tancredi Carli Dan Clements Amanda Cooper-Sarkar Claire Gwenlan Gavin P. Salam Frank Siegert Pavel Starovoitov Mark Sutton 《The European Physical Journal C - Particles and Fields》2010,66(3-4):503-524
A method to facilitate the consistent inclusion of cross-section measurements based on complex final-states from HERA, TEVATRON and the LHC in proton parton density function (PDF) fits has been developed. This can be used to increase the sensitivity of LHC data to deviations from Standard Model predictions. The method stores perturbative coefficients of NLO QCD calculations of final-state observables measured in hadron colliders in look-up tables. This allows the a posteriori inclusion of parton density functions (PDFs), and of the strong coupling, as well as the a posteriori variation of the renormalisation and factorisation scales in cross-section calculations. The main novelties in comparison to original work on the subject are the use of higher-order interpolation of Lagrangian form, which substantially improves the trade-off between accuracy and memory use, and a CPU and computer memory optimised way to construct and store the look-up table using modern software tools. It is demonstrated that a sufficient accuracy on the cross-section calculation can be achieved with reasonably small look-up table size by using the examples of jet production and electro-weak boson (Z, W) production in proton-proton collisions at a center-of-mass energy of 14 TeV at the LHC. The use of this technique in PDF fitting is demonstrated in a PDF-fit to HERA data and simulated LHC jet cross-sections as well as in a study of the jet cross-section uncertainties at various centre-of-mass energies. 相似文献