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LCSH_x
Source : DANS

About convergence of numerical approximations to homoclinic twist bifurcation points in Z2-symmetric systems in R^4

Gils, van, S.A. et al. (1997)

An algorithm to detect homoclinic twist bifurcation points in Z2 - symmetric autonomous systems of ordinary differential equations in R4 along curves of symmetric homoclinic orbits to hyperbolic equilibria has been developed. We show convergence of numerical approximations to homoclinic twist ...

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Source : DANS

Asteroseismic Determination of Obliquities of the Exoplanet Systems Kepler-50 and Kepler-65

Chaplin, W.J. et al. (2013)

Results on the obliquity of exoplanet host stars?the angle between the stellar spin axis and the planetary orbital axis?provide important diagnostic information for theories describing planetary formation. Here we present the first application of asteroseismology to the problem of stellar obliquity ...

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Source : Ifremer

ERS-1/2 orbit improvement using TOPEX/POSEIDON: The 2cm challenge

Le Traon, Pierre-yves et al. (avr. 1998)

The ERS orbit error reduction method using TOPEX/POSEIDON (TIP) data as a reference [Le Traon et al., 1995a] was applied to ERS-1 cycles from phases C, E, F, and G and to the first 16 cycles of the ERS-2 mission (phase A). T/P M-GDR (geophysical data record) (version C) and ERS-1/2 ocean product ( ...

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Source : DANS

Asymmetric transition disks: Vorticity or eccentricity?

Ataiee, S. et al. (2013)

Context. Transition disks typically appear in resolved millimeter observations as giant dust rings surrounding their young host stars. More accurate observations with ALMA have shown several of these rings to be in fact asymmetric: they have lopsided shapes. It has been speculated that these rings ...

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Source : DANS

Limotheres, a new genus of Pinnotherid crab, commensal of the Bivalve Lima, from the Caribbean sea

Holthuis, L.B. (1975)

During the 1970 Caribbean cruise of R.V. "John Elliott Pillsbury" of the University of Miami, a peculiar Pinnotherid inhabitant of Lima tenera Sowerby was collected. Recognized on board as something unusual, it was later found to belong to an undescribed genus and species. I want to express here my ...

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Source : DANS

Mass and angular momentum loss in massive binary evolution

Pols, O.R. (2007)

I discuss uncertainties in the amount of mass loss and angular momentum loss during mass transfer in massive close binaries, concentrating on the first phase of mass transfer. On the basis of the reaction of the accreting star, one expects the fraction of mass lost from the binary to be a function ...

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Source : DANS

Emergent quantum mechanics and emergent symmetries

Hooft, G. 't (2007)

Quantum mechanics is ‘emergent’ if a statistical treatment of large scale phenomena in a locally deterministic theory requires the use of quantum operators. These quantum operators may allow for symmetry transformations that are not present in the underlying deterministic system. Such theories ...

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Source : HAL

Business cycle fluctuations and learning-by-doing externalities in a one-sector model

D'Albis, Hippolyte et al. (mars 2012)

URL des Documents de travail : http://ces.univ-paris1.fr/cesdp/cesdp2012.html Documents de travail du Centre d'Economie de la Sorbonne 2012.26 - ISSN : 1955-611X We consider a one-sector Ramsey-type growth model with inelastic labor and learning-by-doing externalities based on cumulative gross ...

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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 : DANS

Bounds for bounded motion around a perturbed fixed point

Damme, van, Ruud et al. (1988)

We consider a dissipative map of the plane with a bounded perturbation term. This perturbation represents e.g. an extra time dependent term, a coupling to another system or noise. The unperturbed map has a spiral attracting fixed point. We derive an analytical/numerical method to determine the ...

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