Project Summary Digital technologies and networks are widely regarded as having enhanced access to and use of scientific data, information, and literature significantly, and to have great promise for accelerating the discovery and the communication of knowledge both within the scientific community and in the broader society. Scientific knowledge discovery in the virtual environment, referred to...

Abstract Chromium contamination is one of the most common heavy metal pollutants. Degradation highly toxic Cr(VI) by microbial remediation technology can open up a new way for environmentally friendly and efficient chromium pollution control. The adsorption reduction kinetics Enterobacter cloacae SKD were studied experiments SKD. mechanism was revealed, characteristics determined. results showe...

Elastomeric materials for sealing devices operated in the Far North, including Republic of Sakha (Yakutia), must be resistant to working environments and have frost wear resistance with acceptable physical mechanical properties. Some listed properties are mutually exclusive not always achievable based on individual rubber. Thus, one promising method elastomeric is use rubber mixtures. In this s...

Abstract We study a relaxed version of the column-sampling problem for Nyström approximation kernel matrices, where approximations are defined from multisets landmark points in ambient space; such referred to as samples. consider an unweighted variation radial squared-kernel discrepancy (SKD) criterion surrogate classical criteria used assess accuracy; this setting, we discuss how samples can b...

Sub-Saharan Africa has the highest ratio of maternal deaths in the world. Despite some progress, it is uncertain if Ghana (like other sub-Saharan countries) can reduce, by three-quarters, the maternal mortality ratio (MMR) by the year 2015 Therefore, the primary purpose of this study was to determine the predictors of MMR in Ghana. The study utilized data from the Demographic and Health Survey ...

Wire electric discharge machine (WEDM) is spark erosion in unconventional machining technique to cut hard and the conductive material with a wire as an electrode. The blanking die material SKD 11 is a high carbon and high chromium tool steel with high hardness and high wearing resistance property. This tool steel has broad application in press tools and dies making industries. In this research ...

Using the classical Parzen window (PW) estimate as the desired response, the kernel density estimation is formulated as a regression problem and the orthogonal forward regression technique is adopted to construct sparse kernel density (SKD) estimates. The proposed algorithm incrementally minimises a leave-one-out test score to select a sparse kernel model, and a local regularisation method is i...

It has been conjectured that the string and unification scales may be substantially lower than previously believed, perhaps a few TeV. In scenarios of this type, orbiting detectors such OWL or AIRWATCH can observe spectacular phenomena at trans-GZK energies. We explore measurable signatures of the hypothesis that trans-GZK air showeres (“anomalous showers”) are originated by strongly interactin...