In this work, an improved active kriging method based on the AK-IS and truncated importance sampling (TIS) is proposed to efficiently evaluate structural reliability. The novel called AWK-TIS inspired by RBF-GA previously published in literature. innovation of that TIS adopted lessen sample pool size significantly, whale optimization algorithm (WOA) employed acquire optimal Kriging model most p...

Curvilinear edges and surfaces are developed to span a given logically-cuboid distribution of nodes. The underlying construction uses four successive nodes to de ne a curve spanning the middle pair as follows: One interpolates each of the two successive triples of nodes with the segment of a circle or straight line. Then one blends the two segments continuously between the middle pair of nodes....

In order to extract protein sequences from nucleotide sequences, it is an important step to recognize points at which regions that start code for proteins. These points are called translation initiation sites (TIS). The task of recognizing TIS can be modeled as a classification problem. In this paper, we use a new pattern classification algorithm which has recently been proposed by Vapnik to de...

In a pre vi ous study, it was noted that in some cases when com pres sive strains greater than about 5% were ap plied to tu mors re moved from the breast, there was an abrupt and ir re vers ible change in the tis sue stiff ness. The data from that study were fur ther an a lyzed and in fil trat ing ductal car ci no mas with and with out lob u lar fea tures were se lected for ad di tional test in...

Aim: To assess whether retinal vascular caliber measurement from digital fundus photographs using IVAN software (University of Wisconsin, Madison, WI) is affected by bicubic image interpolation using image processing software (Photoshop version 5.5, Adobe Systems Inc., San Jose, CA). Material and methods: 32 good quality optic disc centered retina photos (slides) acquired in healthy volunteers ...

Expression of the alpha-subunit of the amiloride-sensitive sodium channel (alphaENaC) is regulated by a number of factors in the lung, including oxygen partial pressure (PO2). As transcriptional activation is a mechanism for raising cellular mRNA levels, we investigated the effect of physiological changes in PO2 on the activity of the redox-sensitive transcription factor nuclear factor kappaB (...

Fracture models of vein formation can produce realistic training images (TIs) for use in multiple-point geostatistics. Vein formation is modeled by applying flow simulation to a fracture model to mimic the flow of an ore-bearing fluid through fractured rock. TIs are generated by assuming that veins form in areas of high flow where there would be preferential deposition of the mineral of interes...

BACKGROUND Local excision for T1 rectal cancers with Transanal Endoscopic Microsurgery (TEM) is an accepted standard of care. However for T2/T3 rectal cancers, the high local failure indicates that this is not a valid option. MATERIALS AND METHODS Between 1990 and 2000, 83 patients with rectal adenocarcinoma underwent complete full thickness local excision. The mean diameter of the tumor was ...

We provide an experimental evidence of transient instabilities (TIs) in a terahertz (THz) quantum cascade laser (QCL) under optical feedback, contrast to the widely accepted claim that THz QCLs are ultrastable against feedback. The TIs appear as periodic oscillations emitted power or terminal voltage with increasing oscillation frequency feedback increases. absence relaxation and low linewidth ...