INTRODUCTION: Diffusion-weighted imaging (DWI) data acquired with interleaved EPI sequence are highly susceptible to inter-segment phase variations and aliasing artifacts induced by motion in the presence of strong diffusion weighting gradients. The multiplexed sensitivity-encoding (MUSE) method 1 was recently reported to reliably remove aliasing artifacts in interleaved Cartesian EPI based hig...

Speech production is essentially a nonlinear dynamic process. Motivated by ideas in dynamic system research, this paper seeks to recast the speech representation problem (front-end) as an attempt to reconstruct the phase space of the production process, or articulatory configurations. We point out that the use of the delta and double delta features, common in current ASR (Automatic Speech Recog...

In theory, most MRI images depict the spin density as a function of position, and hence should be real valued. If this were true, then by the symmetry of the Fourier transform, only half of the spatial-frequency data will need to be collected. Since real functions have conjugate symmetry in spatial frequency space, the uncollected data could be synthesized by reflecting conjugate data across th...

Time-frequency analysis is performed for chaotic flow with a power spectrum estimator based on the phase-space neighborhood. The relation between the reference phase point and its nearest neighbors is demonstrated. The nearest neighbors, representing the state recurrences in the phase space reconstructed by time delay embedding, actually cover data segments with similar wave forms and thus poss...

OBJECTIVE We sought to determine the incidence and risk factors for venous thromboembolism (VTE) in women undergoing reconstructive pelvic surgery (RPS). STUDY DESIGN Using the American College of Surgeons National Surgical Quality Improvement Program registry, we identified patients who underwent RPS from 2006 through 2010 based on Current Procedural Terminology codes. We defined 2 cohorts: ...

Typical blind search algorithms in P2P networks generate a significant amount of duplicate query messages in order to increase the success rate. We present a novel framework, named Recursive Partitioning Search (RPS), for blind search over structured peer-to-peer (P2P) networks, by which the query message duplication can be avoided. Two realizations of the framework for Chord and Pastry are pre...

Collagen lattices containing bovine retinal pericytes (RPs), vascular smooth muscle cells (VSMCs), pulmonary microvessel endothelial cells (PMECs), or aortic endothelial cells (AECs) were prepared and contraction was quantitated by measuring the resulting change in lattice area. VSMCs were the most efficient at lattice contraction followed by RPs and then PMECs. AECs did not contract the lattic...

The cell wall polysaccharide of Streptococcus gordonii 38 functions as a coaggregation receptor for surface adhesins on other members of the oral biofilm community. The structure of this receptor polysaccharide (RPS) is defined by a heptasaccharide repeat that includes a GalNAcbeta1-->3Gal-containing recognition motif. The same RPS has now been identified from S. gordonii AT, a partially sequen...