The main point of this paper is to propose a non-local three-dimensional hydraulic conductivity full tensor upscaling algorithm and code. The algorithm is capable of transforming very refined cell conductivity models into coarse block conductivity models for quick and accurate solution of the groundwater flow equation. Flow rate and hydraulic head gradient are the variables used to relate the o...

Solution to biomechanical contact problems for biological joints are of great importance for medical applications, especially in analysing different stages of osteoarthitis. As the cartilage layers are extremely thin in comparison with the characteristic size of the bones while the physics of the problem is rather complicated, direct computations can meet with serious numerical difficulties [1]...

Positions of the phenyl hydrogens were held fixed during refmement. Isotropic thermal parameters for the methyl hydrogens were set a t 1.2 times the initial equivalent isotropic thermal parameter of the methyl carbon and were not refined. Remaining hydrogen isotropic thermal parameters were refined. An extinction correction was applied. The absolute configuration was confirmed in the refinement...

Thermal stability and the kinetics of the grain growth of nano-crystalline Mg-6Al-1Zn-1Si alloy prepared via mechanical alloying (MA) were investigated. It started with elemental powders, using a variety of analytical techniques including differential scanning calorimetry (DSC), X-ray diffraction method (XRD), and scanning electron microscopy (SEM) coupled with energy dispersive spectrometry (E...

In this paper, 2D-Fisher criterion function was introduced to change detection in remote sensing images based on classic one dimension fisher criterion function, and this expanded the space of grey value from one-dimension to two-dimension and greatly improved the image noise-sensitivity. Meanwhile, in order to enhance the computing speed, we refined the solution method of 2D threshold in 2D-Fi...

introduction: the purpose of this in vitro study was to evaluate three common gutta-percha solvents’ effectiveness in dissolving three different types of root canal sealers. materials and methods: the solubility of three different root canal sealers (ah plus, apexit plus and endoflas fs) was assessed in xylene, refined orange oil, tetrachloroethylene and distilled water (control). one-hundred t...

This article is devoted to the numerical solution of large-scale quadratic eigenvalue problems. Such problems arise in a wide variety of applications, such as the dynamic analysis of structural mechanical systems, acoustic systems, fluid mechanics, and signal processing. We first introduce a generalized second-order Krylov subspace based on a pair of square matrices and two initial vectors and ...

Feature selection (FS) constitutes a series of processes used to decide which relevant features/attributes include and irrelevant features exclude for predictive modeling. It is crucial task that aids machine learning classifiers in reducing error rates, computation time, overfitting, improving classification accuracy. has demonstrated its efficacy myriads domains, ranging from use text (TC), m...

We present a fully numerical multigrid approach for solving the all-electron Kohn-Sham equation in molecules. The equation is represented on a hierarchy of Cartesian grids, from coarse ones that span the entire molecule to very fine ones that describe only a small volume around each atom. This approach is adaptable to any type of geometry. We demonstrate it for a variety of small molecules and ...