A fourth-order compact difference scheme with unequal mesh sizes in different coordinate directions is employed to discretize a two-dimensional Poisson equation in a rectangular domain. Multigrid methods using a partial semicoarsening strategy and line Gauss–Seidel relaxation are designed to solve the resulting sparse linear systems. Numerical experiments are conducted to test the accuracy of t...

We examine the role of social capital in explaining highly unequal regional distribution firms’ carcinogenic releases. Our model predicts that capital, by enabling information-sharing and coordination among community members, decreases analysis, based on US county-level releases derived from around 2 million chemical-facility-level reports during period 1998–2019 instrumental variables approach...

Wireless sensor network (WSN) becomes a hot research area owing to an extensive set of applications. In order accomplish energy efficiency in WSN, most the earlier works have focused on clustering process which enables elect CHs and organize unequal clusters. However, results spot problem can be addressed by use techniques, construct clusters sizes equalize dissipation WSN. Unequal formulated a...

The combined simulated annealing (CSA) algorithm was developed for the discrete facility location problem (DFLP) in the paper. The method is a two-layer algorithm, in which the external subalgorithm optimizes the decision of the facility location decision while the internal subalgorithm optimizes the decision of the allocation of customer's demand under the determined location decision. The per...

Many drawbacks has been found in Hu’s moment Invariant or known as Geometric Moment Invariant (GMI). Due to its flexibility, GMI is still widely used by the researchers until now. This paper proposes an alternative approach, Weighted Aspect Moment Invariant (WAMI) by combining Weighted Central Moment (WCM) and Aspect Moment Invariant (AsMI) to solve GMI’s drawbacks in term of noise and unequal ...

We investigate theoretically the existence of bulk and surface discrete breathers in a one-dimensional magnetic metamaterial comprised of a periodic binary array of split-ring resonators; the two types of resonators used have different resonant frequencies caused by unequal slit sizes. We use the rotating-wave approximation and construct several types of breather excitations both for the energy...

This supplement is divided into five sections. In the first two sections we prove the validity of the Extended Screen-to-the-Best Procedure and Extended Rinott’s Procedure; in both cases the extensions are to allow unequal initial sample sizes, n0i. The third section establishes the validity of the Screen-Restart-and-Select Procedure. The fourth section shows how we select [nlow, nhigh] to star...

The phase separation between two immiscible liquids advected by a bidimensional velocity field is investigated numerically by solving the corresponding Cahn-Hilliard equation. We study how the spinodal decomposition process depends on the presence-or absence-of Lagrangian chaos. A fully chaotic flow, in particular, limits the growth of domains, and for unequal volume fractions of the liquids, a...

We consider the problem of selecting the normal population with the smallest coefficient of variation, which is a natural goal when the means as well as the variances of the populations are unknown and unequal. The indifference-zone approach (Bechhofer 1954) to this problem has been previously considered by Choi, Jeon and Kim (1982). We review their selection procedure and provide tables of sam...

The problem of Unequal Area Facility Layout Planning (UA-FLP) has been addressed by a large number approaches considering set quantitative criteria. Moreover, more recently, the personal qualitative preferences an expert designer or decision-maker (DM) have taken into account too. This article deals with capturing than single DM’s to obtain common and collaborative design including whole from a...