In standard equispaced finite difference (FD) formulas, symmetries can make the order of accuracy relatively high compared to the number of nodes in the FD stencil. With scattered nodes, such symmetries are no longer available. The generalization of compact FD formulas that we propose for scattered nodes and radial basis functions (RBFs) achieves the goal of still keeping the number of stencil ...

This paper presents a conservative front-tracking method for shocks and contact discontinuities that is second-order accurate. It is based on a volume-of-fluid method that treats the moving front with concepts similar to those of an embedded-boundary method. Special care is taken in the centering of the data to ensure the right order of accuracy at the front, and a redistribution step guarantee...

A unified approach to approximating spatial derivatives in particle methods using integral operators is presented. The approach is an extension of particle strength exchange, originally developed for treating the Laplacian in advection–diffusion problems. Kernels of high order of accuracy are constructed that can be used to approximate derivatives of any degree. A new treatment for computing de...

Difference schemes are treated as operator equations in real linear normed space [l, 23. Twoand three-layer schemes are discussed in real Hilbert space (more precisely, in unitary space, since no use is made of completeness). Stable schemes are classified. Schemes are written in a canonical form that enables stability operators, or what will be termed regularizers, to be introduced. Sufficient ...

This work proposes the application of Multi-Objective Genetic Algorithms to obtain Fuzzy Rule-Based Systems with a better trade-off between interpretability and accuracy in linguistic fuzzy modelling problems. To do that, we present a new post-processing method that by considering selection of rules together with tuning of membership functions gets solutions only in the Pareto zone with the hig...

The paper presents a scheme for approximation for the task of maximizing the expected utility over a set of policies, that is, a set of possible ways of reacting to observations about an uncertain state of the world. The scheme which is based on the mini-bucket idea for approximating variable elimination algorithms, is parameterized, allowing a exible control between e ciency and accuracy. Furt...

background and aims. in order to fabricate prostheses with high accuracy and durability, soldering techniques have been introduced to clinical dentistry. however, these prostheses always fail at their solder joints. the purpose of this study was to evaluate the effect of gap distance on the tensile strength of base metal solder joints. materials and methods. based on ada/iso 9693 specifications...

objective: despite using the bacille calmette guerin (bcg) vaccine, tuberculosis (tb) is still a worldwide disease that kills 2-3 million people each year. developing a new and more effective vaccine is one way to possibly reduce the morbidity and mortality of tb. the mtb72f vaccine is one of the important subunit vaccines applied in human clinical trials. in this study, we have constructed an ...

background and objectives: some of the human papillomaviruses (hpvs) can infect genital tracts and are sometimes associated with anogenital tract cancers. hpvs induced cervical cancers through the expression of e6 and e7 genes by inactivating the tumor suppressor proteins. in this study, e6 and e7 genes were chosen in order to construct an expression vector which is able to express target prote...

A novel spectral-element approach for the eikonal equation is presented based on the work of Tucker et al. This approach is readily implemented in standard finiteelement flow solvers developed for the Navier-Stokes equations. Results are presented for distance function (level set) for three planar configurations: circular cylinder, NACA 0012 airfoil, and T106 airfoil. Results demonstrate that t...