We study a parallel Newton-Krylov-Schwarz (NKS) based algorithm for solving large sparse systems resulting from a fully implicit discretization of partial differential equations arising from petroleum reservoir simulations. Our NKS algorithm is designed by combining an inexact Newton method with a rank-2 updated quasi-Newton method. In order to improve the computational efficiency, both DDM and...

Pyrite oxidation, Acid Rock Drainage (ARD) generation, and associated release and transport of toxic metals are a major environmental concern for the mining industry. Estimation of the metal loading in ARD is a major task in developing an appropriate remediation strategy. In this study, an expert system, the Multi-Output Adaptive Neuro-Fuzzy Inference System (MANFIS), was used for estimation of...

Several hydrodynamic descriptions of charge transport in graphene have been presented recent years. We discuss a general model governing the dynamics two-dimensional electron gas magnetized field-effect transistor slow drift regime. The Dyakonov–Shur instability is investigated, including effect weak magnetic fields (i.e., away from Landau levels). verify that occurrence gap on dispersion relat...

tertiary intrusive granitoids within the lut block in the khorasan razavi and south khorasan provinces are mainly sub-volcanic with porphyry texture and their composition varies from granite to diorite but monzonite is dominant. with the exception of hired, these are classified as belonging to the magnetite-series of i-type granitoids. chemically, these rocks are meta-aluminous. those with mine...

Human-carnivore conflicts present an array of conservation challenges, especially in complex and cross-cultural settings. Described here is a facilitated, multi-method, collaborative process the Nuu-chah-nulth First Nations' Traditional Territory, British Columbia, Canada, aimed at building project to address human-wolf following species' natural re-colonization national park reserve. Participa...

This paper discusses an observer-based fuzzy control problem for uncertain nonlinear singular systems under Multi-Performance Requirements (MPRs). The approach used in the is to model system using a Takagi–Sugeno (T-S) that can be analyzed linear theories. proposed scheme based on Parallel Distributed Compensation (PDC) and Proportional Derivative (PD) scheme. goal design controller achieves st...