The morphology of the transition from flat to normal subduction in eastern central Mexico is explored using intraslab earthquakes recorded by temporary and permanent regional seismic arrays. Observations of a sharp transition in slab dip near the abrupt end of the Trans-Mexican Volcanic Belt (TMVB) suggest a possible slab tear located within the subducted South Cocos plate. The eastern lateral ...

In the present work, failure of a snow slab is analyzed by accounting Normal mode criteria. The analysis has been extended to include residual stress into the model (in addition to body forces). Intensity of crack energy release rate, and displacement components have been derived and their values have been estimated. The obtained results have been compared with the existing snow slab failure mo...

In this thesis we deal with two geometric optimization problems: Minimizing Absolute Gaussian Curvatue Locally in Meshes and the Solution path of the Slab Support Vector Machine. In the first part, we show that given a polygon C in R it is in general algebraically hard to find a point in R3\C at which the absolute Gaussian curvature with respect to C is minimized. By algebraically hard we mean ...

Introduction: The need to detect small brain lesions and to reduce partial volume effects in fiber tractography has made high resolution isotropic 3D diffusion-weighted imaging (DWI) a research focus in diffusion acquisition methodology [1-4]. To achieve reasonable scan time, most of the proposed 3D DWI methods used steady-state free precession (SSFP) acquisition [1-3] which has a complicated d...

In Portland Cement Concrete (PCC) pavement of the roads, dowels bar transfers vehicle loading to the unloaded slab. Load Transfer Efficiency (LTE) is used to evaluate dowel bars in PCC pavement. This parameter is defined as the vertical displacement ratio of the loaded slab versus the unloaded slab. In this study, the impact of effective factors (friction coefficient between dowel and concrete ...

Dehydration of the subducting slab favors the melting of the surrounding mantle. Water content and melt evolution atop a spontaneously retreating subducting slab are reported in a threedimensional (3-D) model. We find that fluids, including water and melts in the rocks, vary substantially along the trench, which cannot be found in two-dimensional (2-D) models. Their maxima along the subducting ...

A planar slab of material, for which both the permittivity and permeability have the values of 21, can bring not only the propagating fields associated with a source to a focus, but can also refocus the nonpropagating near fields, thereby achieving resolution beyond the diffraction limit. We study the sensitivity of this subwavelength focus to the slab material properties and periodicity, and n...

The three-dimensional shapes of tectonic plates that sink into the Earth’s mantle (slabs) are the starting point for a range of geoscience studies, from determining the forces driving the motion of tectonic plates, to potential seismic and tsunami hazards, to the sources of magmas beneath active volcanos. For many of these applications finite element methods are used to model the deformation or...

In this work we introduce the spike and slab RBM. The model is characterized by having both a real valued vector: the slab, and a binary variable: the spike, associated with each unit in the hidden layer. The spike and slab RBM possesses some practical properties such as being amenable to Block Gibbs sampling as well as being capable of generating similar latent representations of the data to t...

This paper provides an update on the features of SLAB, a software-based real-time virtual acoustic environment (VAE) rendering system designed for use in the personal computer environment. SLAB is being developed as a tool for the study of spatial hearing. The SLAB software is being released to the research community under a free-public license for non-commercial use. It is our hope that resear...