نتایج جستجو برای: warped surface

تعداد نتایج: 638454  

2001
Lerothodi L. Leeuw Tim G. Hawarden Henry E. Matthews E. Ian Robson Andreas Eckart

Images covering the central 450×100 (∼ 8.0×2.0 kpc) of NGC5128 (Centaurus A) obtained using SCUBA at 850 and 450μm with beam sizes of 14.5 and 8 respectively, are presented. These data are compared with those obtained at other wavelengths, in particular the optical, mid-infrared, and far-infrared continuum. The sensitive 850 and 450μm images show that the submillimeter (submm) continuum morphol...

2008
Lev Kofman Shinji Mukohyama

Usual inflation is realized with a slow rolling scalar field minimally coupled to gravity. In contrast, we consider dynamics of a scalar with a flat effective potential, conformally coupled to gravity. Surprisingly, it contains an attractor inflationary solution with the rapidly rolling inflaton field. We discuss models with the conformal inflaton with a flat potential (including hybrid inflati...

2004
Pedro J. Quintana-Morales Juan L. Navarro-Mesa

Frequency-warped analysis techniques are attractive in many speech applications since they have a clear connection to human hearing. In this paper we propose a warped version of a pole-zero analysis obtained from several periods of voiced speech. We approach the estimation of the coefficients associated to the poles and zeros by minimizing a cost function, which is based on the ‘warped’ reconst...

2009
Fernando Marchesano Paul McGuirk Gary Shiu

We analyze the wavefunctions for open strings in warped compactifications, and compute the warped Kähler potential for the light modes of a probe D-brane. This analysis not only applies to the dynamics of D-branes in warped backgrounds, but also allows to deduce warping corrections to the closed string Kähler metrics via their couplings to open strings. We consider in particular the spectrum of...

2006
Daniel Baumann Anatoly Dymarsky Igor R. Klebanov Juan Maldacena Liam McAllister Arvind Murugan

We study the potential governing D3-brane motion in a warped throat region of a string compactification with internal fluxes and wrapped D-branes. If the Kähler moduli of the compact space are stabilized by nonperturbative effects, a D3-brane experiences a force due to its interaction with D-branes wrapping certain four-cycles. We compute this interaction, as a correction to the warped four-cyc...

2009
Heng-Yu Chen Ling-Yan Hung Gary Shiu

We present a variant of warped D-brane inflation by incorporating multiple sets of holomorphically embedded D7-branes involved in moduli stabilization with extent into a warped throat. The resultant D3-brane motion depends on the D7-brane configuration and the relative position of the D3-brane in these backgrounds. The non-perturbative moduli stabilization superpotential takes the racetrack for...

2013
Tomi Kinnunen Md. Jahangir Alam Pavel Matejka Patrick Kenny Jan Cernocký Douglas D. O'Shaughnessy

Accuracy of speaker verification is high under controlled conditions but falls off rapidly in the presence of interfering sounds. This is because spectral features, such as Mel-frequency cepstral coefficients (MFCCs), are sensitive to additive noise. MFCCs are a particular realization of warped-frequency representation with low-frequency focus. But there are several alternative, potentially mor...

Journal: :Computational Intelligence and Neuroscience 2007
Jérémie Mattout Richard N. A. Henson Karl J. Friston

We describe a simple and efficient solution to the problem of reconstructing electromagnetic sources into a canonical or standard anatomical space. Its simplicity rests upon incorporating subject-specific anatomy into the forward model in a way that eschews the need for cortical surface extraction. The forward model starts with a canonical cortical mesh, defined in a standard stereotactic space...

Journal: :Monthly Notices of the Royal Astronomical Society 2018

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