In this paper we propose a novel hybrid multispectral MR images segmentation framework which combines Markov Random Field (MRF), stochastic relaxation (SR) scheme and an improved Genetic Algorithm (IGA). MRF models have by now been firmly established as a robust tool for de-noising and segmentation of medical images. Characterizing MRFs by their local properties (Markovianity), they are well su...

We present a theoretical study of the effect electron-electron interactions and Sr doping on electronic structure infinite-layer (Nd,Sr)NiO$_2$ using density functional+dynamical mean-field theory approach. In particular, we explore impact epitaxial compressive strain that experience films properties, magnetic correlations, exchange couplings. Our results reveal crucial importance orbital-depen...

We consider a full-duplex (FD) multiuser system where an FD base station (BS) is designed to simultaneously serve both downlink (DL) and uplink (UL) users in the presence of half-duplex eavesdroppers (Eves). The problem is to maximize the minimum (max-min) secrecy rate (SR) among all legitimate users, where the information signals at the FD-BS are accompanied with artificial noise to debilitate...

[1] We determine the extinction‐to‐backscatter (Sa) ratios of dust using (1) airborne in situ measurements of microphysical properties, (2) modeling studies, and (3) the Cloud‐Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) observations recorded during the NASA African Monsoon Multidisciplinary Analyses (NAMMA) field experiment conducted from Sal, Cape Verde during August...

It is well established that excitation contraction (EC) coupling in cardiac myocytes is mediated by the entry of calcium ions (Ca 2 ) from the bathing medium into the cell cytoplasm (Fabiato, 1985), which then triggers calcium-induced calcium release (CICR) from the sarcoplasmic reticulum (SR). More recently, it was proposed that a second, quite separate, EC-coupling process, mediated by an eff...

It is well established that excitation contraction (EC) coupling in cardiac myocytes is mediated by the entry of calcium ions (Ca 2 ) from the bathing medium into the cell cytoplasm (Fabiato, 1985), which then triggers calcium-induced calcium release (CICR) from the sarcoplasmic reticulum (SR). More recently, it was proposed that a second, quite separate, EC-coupling process, mediated by an eff...

RATIONALE In ventricular myocytes of large mammals, not all ryanodine receptor (RyR) clusters are associated with T-tubules (TTs); this fraction increases with cellular remodeling after myocardial infarction (MI). OBJECTIVE To characterize RyR functional properties in relation to TT proximity, at baseline and after MI. METHODS Myocytes were isolated from left ventricle of healthy pigs (CTRL...

We have used multiple-labeling immunohistochemistry, intracellular dye-filling, and intracellular microelectrode recordings to characterize the distribution of tachykinin receptors and substance P boutons on subpopulations of neurons within the guinea pig celiac ganglion. Superfusion of substance P (SP, 1 microM for 1 min) depolarized 42% of tonic neurons and inhibited afterhyperpolarizations i...

Near-neighbor search is an increasingly important operation for queries over multimedia, text, and other non-standard datatypes. In large databases, near-neighbor searches must be enhanced by indexed retrieval for e ciency. In this paper, we present a detailed analysis of three proposals for near-neighbor search: one based on the R-tree, and two which motivated the invention of new trees, namel...