an improved chemical regeneration of the granular activated carbon (gac) exhausted by the color (pigments and pollutants) from citric acid fermentation solution (caf) was investigated. in the experiments, improved means were adopted to advance the traditional chemical regenerating method and the adsorption capacity of the first time renewed gac is 103% of original gac. using oxidant and surfact...

During recent years, gamification has become a popular method of enriching information technologies. Several business analysts have made promising predictions about penetration of gamification, however, it has also been estimated that most gamification efforts will fail due to poor understanding of how gamification should be designed and implemented. Therefore, in this paper we seek to advance ...

We describe a highly efficient numerical scheme for finding two-sided bounds for the eigenvalues of the fractional Laplace operator (−∆)α/2 in the unit ball D ⊂ Rd, with a Dirichlet condition in the complement of D. The standard Rayleigh–Ritz variational method is used for the upper bounds, while the lower bounds involve the less-known Aronszajn method of intermediate problems. Both require exp...

We prove global convergence of particular iterative projection methods using the so-called shift-and-invert technique for solving symmetric generalized eigenvalue problems. In particular, we aim to provide a variant of the convergence theorem obtained by Crouzeix, Philippe, and Sadkane for the generalized Davidson method. Our result covers the Jacobi-Davidson and the rational Krylov methods wit...

Abstract: In this article a numerical method is proposed to approximate the solution of the system of integrodifferential equations describing biological species living together. The method is based upon Legendre multiwavelet approximations. The properties of Legendre multiwavelet are first presented. These properties together with Ritz-Galerkin method are then utilized to reduce the equations ...

OBJECTIVE Studies show a high potential demand for psychiatric advance directives but low completion rates. The authors conducted a randomized study of a structured, manualized intervention to facilitate completion of psychiatric advance directives. METHOD A total of 469 patients with severe mental illness were randomly assigned to a facilitated psychiatric advance directive session or a cont...

Many influential models of sentence production (e.g., Bock & Levelt, 1994; Kempen & Hoenkamp, 1987; Levelt, 1989) emphasize the central role of verbs in structural encoding, and thus predict that verbs should be selected early in sentence formulation, possibly even before the phonological encoding of the first constituent (Ferreira, 2000). However, the most direct experimental test of this hypo...