Article on structural and electronic properties of carbon nanotube tapers, a set of nanostructures comprised of straight tubular sections with decreasing diameters, joined to each other via conical funnels and terminated with a hemispherical cap.

Article on first-principles investigations of the dielectric properties of polypropylene/metal-oxide interfaces. Nanoscale-resolved dielectric properties of polypropylene/metal-oxide (alumina, PbTiO₃) interfaces and of the corresponding surfaces are investigated via first-principles calculations.

Article on the use of videophones for patient and family participation in hospice interdisciplinary team meetings.

Article on the solubility of pioglitazone hydrochloride in aqueous solutions of ethanol, propylene glycol, and n-methyl-2-pyrrolidone at 298°K.

Article on the transcriptional regulator AlgR controlling cyanide production in Pseudomonas aeruginosa.

Article on the harpy eagle (Harpia harpyja) and how high levels of genetic diversity and differentiation can fuel conservation programs.

Article on an analysis of auditory measures in normal hearing young male adult cigarette smokers using multiple variable selection methods with predictive validation assessments.

Article discussing the inhibition of K+ currents of outer hair cells in guinea pig cochlea by fluoxetine.

Article discussing a methodological proposal for the quality control of precipitation data.

Article discussing solubility in binary solvent mixtures and anthracene dissolved in alcohol + carbon tetrachloride mixtures at 298.2 K.

Article on a general treatment of solubility and the quantitative structure-property relationship (QSPR) correlation of solvation free energies of single solutes in series of solvents.

Article on a general treatment of solubility and quantitative structure-property relationship (QSPR) prediction of free energies of solvation of specified solutes in ranges of solvents.

Article on the surface tension calculation of mixed solvents with respect to solvent composition and temperature by using Jouyban-Acree model.

Article on regiospecific hydroxylation of isoflavones by cytochrome P450 81E enzymes from Medicago truncatula.

Article on biosynthesis and genetic engineering of proanthocyanidins and (iso)flavonoids.

Article on the mechanism and modeling of the formation of gaseous alkali sulfates.

An article, written by David Crary for The Washington Post, about the Bush administration's early support for gay and lesbian individuals and the response from the socially conservative right as well as the left.

An article, written by John Cloud for Time Magazine, about Cody, Wyoming five years after the murder of a young gay man named Matthew Shepard. It is one of the more liberal cities in the state and is also home to one of the Republican Unity Coalition's chairmen, Alan Simpson.

Article discussing Peter Schneider's "Eduards Heimkehr" and the image of the "New Berlin."

The pixel purity index (PPI) algorithm proposed by Boardman, et al.1 identifies potential endmember pixels in multispectral imagery. The algorithm generates a large number of skewers (unit vectors in random directions), and then computes the dot product of each skewer with each pixel. The PPI is incremented for those pixels associated with the extreme values of the dot products. A small number of pixels (a subset of those with the largest PPI values) are selected as pure and the rest of the pixels in the image are expressed as linear mixtures of these pure endmembers. This provides a convenient and physically-motivated decomposition of the image in terms of a relatively few components. We report on a variant of the PPI algorithm in which blocks of B skewers are considered at a time. From the computation of B dot products, one can produce a much larger set of derived dot products that are associated with skewers that are linear combinations of the original B skewers. Since the derived dot products involve only scalar operations, instead of full vector dot products, they can be very cheaply computed. We will also discuss a hardware implementation on a field programmable gate array (FPGA) processor …

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Sensitivity and uncertainty methods have been developed to aid in the establishment of areas of applicability and validation of computer codes and nuclear data for nuclear criticality safety studies. A key component in this work is the generation of sensitivity and uncertainty parameters for typically several hundred benchmarks experiments used in validation exercises. Previously, only one-dimensional sensitivity tools were available for this task, which necessitated the remodeling of multidimensional inputs in order for such an analysis to be performed. This paper describes the development of the SEN3 Monte Carlo based sensitivity analysis sequence for SCALE. Two options in the SEN3 package for the reconstruction of angular-dependent forward and adjoint fluxes are described and contrasted. These options are the direct calculation of flux moments versus the calculation of angular fluxes, with subsequent conversion to flux moments prior to sensitivity coefficient generation. The latter technique is found to be significantly more efficient.

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