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Source : DANS

Inertial wave rays in rotating spherical fluid domains

Rabitti, A. et al. (2014)

The behaviour of inertial waves in a rotating spherical container, filled with homogeneous fluid, is here investigated by means of a three-dimensional ray tracing algorithm, in a linear, inviscid framework. In particular, the classical, two-dimensional association between regular modes and periodic ...

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Source : DANS

Skipping Orbits, Traversing Trajectories, and Quantum Ballistic Transport in Microstructures

Beenakker, C.W.J. et al. (1989)

Three topics of current interest in the study of quantum ballistic transport in a two-dimensional electron gas are discussed, with an emphasis on correspondences between classical trajectories and quantum states in the various experimental geometries. We consider the quantized conductance of point ...

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Source : DANS

The quantum 2D-harmonic oscillator in 1:1 resonance with time-dependent perturbation : averaging applied to slowly varying quantum systems

Huveneers, R. (4 juil. 2001)

In this paper we will study the 2D-harmonic oscillator in 1:1 resonance. We add a general third- and fourth order perturbation which is slowly time-dependent, and are interested in the resulting interaction between the unperturbed orbits (states). By treating this system quantummechanically we get a ...

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Source : DANS

GPS-derived orbits for the GOCE satellite

Bock, H. et al. (26 mai 2011)

The first ESA (European Space Agency) Earth explorer core mission GOCE (Gravity field and steady-state Ocean Circulation Explorer) was launched on 17 March 2009 into a sun-synchronous dusk–dawn orbit with an exceptionally low initial altitude of about 280 km. The onboard 12-channel dual-frequency ...

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Source : HAL

Business Cycle Fluctuations and Learning-by-doing Externalities in a One-sector Model

D'Albis, Hippolyte et al. (oct. 2012)

International audience We consider a one-sector Ramsey-type growth model with inelastic labor and learning-by-doing externalities based on cumulative gross investment (cumulative production of capital goods), which is assumed, in accordance with Arrow (1962), to be a better index of experience than ...

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Source : DANS

A study of resonance tongues near a Chenciner bifurcation using MatcontM

Govaerts, W. et al. (24 juil. 2011)

MatcontM is a matlab toolbox for numerical analysis of bifurcations of fixed points and periodic orbits of maps. It computes codim 1 bifurcation curves and supports the computation of normal coefficients including branch switching from codim 2 points to secondary curves. Recently, the initialization ...

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Source : Gallica

A scheme of the solar system with the orbits of the planets and comets belonging therets described from Dr. Halley's accurate table of comets ... / by William Whiston

Whiston, William (1667-1752). Cartographe et al. ( janv. 1720)

Appartient à l’ensemble documentaire : AnvilFr

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Source : DANS

The mixed Ax-Lindemann theorem and its applications to the Zilber-Pink conjecture

Gao, Ziyang (24 nov. 2014)

The Zilber-Pink conjecture is a common generalization of the Andre-Oort and the Mordell-Lang conjectures. In this dissertation, we study its sub-conjectures: Andre-Oort, which predicts that a subvariety of a mixed Shimura variety having dense intersection with the set of special points is special; ...

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Source : DANS

Numerical bifurcation analysis of a class of nonlinear renewal equations

Breda, Dimitri et al. (2016)

We show, by way of an example, that numerical bifurcation tools for ODE yield reliable bifurcation diagrams when applied to the pseudospectral approximation of a one-parameter family of nonlinear renewal equations. The example resembles logistic-and Ricker-type population equations and exhibits ...

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Source : DANS

Unified-model calculations in intermediate coupling with 2d5/2, lg7/2 and 2f7/2 single-particle orbits

Heyde, K. et al. (13 nov. 1967)

The energy spectra of the odd-proton nucleides 121, 125Sb, 129, 131I, 143Pr and 147, 149Pm, and of the doubly even nucleides 142Ce, 144Nd and 146Sm are described in terms of the unified model in intermediate coupling. The phonon energy of the core, the coupling strength between phonon excitations ...

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