We propose estimating the scale parameter (mean of eigenvalues) scatter matrix an unspecified elliptically symmetric distribution using weights obtained by solving Tyler's M-estimator matrix. The proposed weights-based estimate (TWE) is then used to construct affine equivariant as a weighted sample covariance normalized weights. develop unified framework for unknown tail elliptical (such degree...

Abstract Introduction Ventricular arrhythmias (VA) represent a common complication of myocardial infarction (MI). Typically, they occur in two scenarios: during acute MI, related to ongoing ischemia, as ventricular tachycardia (VT) or fibrillation (VF), the context late phase presence scar, monomorphic VT (mVT). Despite above, their occurrence may be atypical. Clinical Case 55–year–old man affe...

Soon after its discovery, the attempts to develop anti-AIDS therapeutics focused on the retroviral protease (PR)-an enzyme used by lentiviruses to process the precursor polypeptide into mature viral proteins. An urgent need for the three-dimensional structure of PR to guide rational drug design prompted efforts to produce milligram quantities of this enzyme. However, only minute amounts of PR w...

This study investigated effects of caffeine ingestion (8 mg/kg) on maximum voluntary torque (MVT) and voluntary activation of the quadriceps during isometric, concentric and eccentric contractions. Fourteen subjects ingested caffeine and placebo in a randomized, controlled, counterbalanced, double-blind crossover design. Neuromuscular tests were performed before and 1 h after oral caffeine and ...

Abstract The minimum variation timescale (MVT) of soft gamma-ray repeaters can be an important probe to estimate the emission region in pulsar-like models, as well Lorentz factor and radius possible relativistic jet burst (GRB)–like thus revealing their progenitors physical mechanisms. In this work, we systematically study MVTs hundreds X-ray bursts (XRBs) from SGR J1935+2154 observed by Insigh...

The stability behaviour of the functional equation F (y) − F (x) = (y − x)f ( (x+ y)/2 ) is studied. It is proved that this equation is superstable i.e. if f, F satisfy ∣∣F (y) − F (x)(y − x)f((x + y)/2)∣∣ ≤ ε then f satisfies this equation (with some F ). In order to obtain this result the equation h∆hf(x) = 0 is considered and it is proved that also this equation is superstable.

The results on the effectiveness of five 2D electrical resistivity tomography (ERT) survey profiles for Ag-Pb-Zn, fluorite, and barite exploration Mississippi Valley Type (MVT) magmatic deposits northeast Mexico, are presented. were made in areas with mining activities or mineralization outcrops. Schlumberger, dipole-dipole, Wenner array configurations used measurements. showed that electric ca...

In this paper, we describe our work developing an object-oriented parallel toolkit on OO-MPI. We are developing a parallelised implementation of the multi-view tomography toolbox, an iterative solver for a range of tomography problems. The code is developed in object-oriented C++. The MVT toolbox is presently used by researchers in the field of tomography to solve linear and non-linear forward ...