Numerical Analysis of a Linear-Implicit Average Scheme for Generalized Benjamin-Bona-Mahony-Burgers Equation

A linear-implicit finite difference scheme is given for the initial-boundary problem of GBBMBurgers equation, which is convergent and unconditionally stable. The unique solvability of numerical solutions is shown. A priori estimate and second-order convergence of the finite difference approximate solution are discussed using energy method. Numerical results demonstrate that the scheme is efficient and accurate

Local and Remote Postconditioning Decrease Intestinal Injury in a Rabbit Ischemia/Reperfusion Model

Intestinal ischemia/reperfusion (I/R) injury is a significant problem that is associated with high morbidity and mortality in critical settings. This injury may be ameliorated using postconditioning protocol. In our study, we created a rabbit intestinal I/R injury model to analyze the effects of local ischemia postconditioning (LIPo) and remote ischemia postconditioning (RIPo) on intestinal I/R injury. We concluded that LIPo affords protection in intestinal I/R injury in a comparable fashion with RIPo by decreasing oxidative stress, neutrophil activation, and apoptosis

Common Features in Electronic Structure of the Fe-Based Layered Superconductors from Photoemission Spectroscopy

High resolution photoemission measurements have been carried out on non-superconducting LaOFeAs parent compound and various superconducting R(O1-xFx)FeAs (R=La, Ce and Pr) compounds. We found that the parent LaOFeAs compound shows a metallic character. Through extensive measurements, we have identified several common features in the electronic structure of these Fe-based compounds: (1). 0.2 eV feature in the valence band; (2). A universal 13~16 meV feature; (3). A clear Fermi cutoff showing zero leading-edge shift in the superconducting state;(4). Lack of superconducting coherence peak(s); (5). Near EF spectral weight suppression with decreasing temperature. These universal features can provide important information about band structure, superconducting gap and pseudogap in these Fe-based materials.Comment: 5 pages,4 figure

The Large High Altitude Air Shower Observatory (LHAASO) Science White Paper

The Large High Altitude Air Shower Observatory (LHAASO) project is a new generation multi-component instrument, to be built at 4410 meters of altitude in the Sichuan province of China, with the aim to study with unprecedented sensitivity the spec trum, the composition and the anisotropy of cosmic rays in the energy range between 10$^{12}$ and 10$^{18}$ eV, as well as to act simultaneously as a wide aperture (one stereoradiant), continuously-operated gamma ray telescope in the energy range between 10$^{11}$ and $10^{15}$ eV. The experiment will be able of continuously surveying the TeV sky for steady and transient sources from 100 GeV to 1 PeV, t hus opening for the first time the 100-1000 TeV range to the direct observations of the high energy cosmic ray sources. In addition, the different observables (electronic, muonic and Cherenkov/fluorescence components) that will be measured in LHAASO will allow to investigate origin, acceleration and propagation of the radiation through a measurement of energy spec trum, elemental composition and anisotropy with unprecedented resolution. The remarkable sensitivity of LHAASO in cosmic rays physics and gamma astronomy would play a key-role in the comprehensive general program to explore the High Energy Universe. LHAASO will allow important studies of fundamental physics (such as indirect dark matter search, Lorentz invariance violation, quantum gravity) and solar and heliospheric physics. In this document we introduce the concept of LHAASO and the main science goals, providing an overview of the project.Comment: This document is a collaborative effort, 185 pages, 110 figure

Error Estimates of H<sup>1</sup>-Galerkin Mixed Finite Element Methods for Nonlinear Parabolic Problem

In this paper, H1-Galerkin mixed element method is proposed to simulate the nonlinear Parabolic problem. The problem is considered in one dimensional space. and optimal error estimates are also established. In particular, our methods can simultaneously approximate the scalar unknown and the vector flux effectively, without requiring the LBB consistency condition.</jats:p

Two-band study on electromagnetic properties of Co-doped superconducting BaFe₂As₂ thin films

Identifying the form of the superconducting order parameter in the Co-doped BaFe2As2 thin film is still an unsolved problem. With the Neumann boundary condition, we study the electromagnetic properties of this thin film based on the two-band Ginzburg–Landau theory. We get the analytic expressions for the upper critical field in arbitrary direction and the temperature dependence of critical supercurrent density through the film. Our theoretical results can fit the experimental data of upper critical field and critical supercurrent density well, which thus strongly suggests the Co-doped BaFe2As2 thin film as a two-gap [Formula: see text]-wave superconductor. Besides, a trijunction experiment is proposed to probe the [Formula: see text]++ or [Formula: see text] pairing symmetry in this material. </jats:p

Error Estimates of H&lt;sup&gt;1&lt;/sup&gt;-Galerkin Expanded Mixed Finite Element Methods for Heat Problems

H1-Galerkin expanded mixed element method are discussed for a class of second-order heat equations. The methods possesses the advantage of mixed finite element while avoiding directly inverting the permeability tensor, which is important especially in a low permeability zone. H1-Galerkin expanded mixed finite element method for heat equations are described, an optimal order error estimate for the methods is obtained.</jats:p

Perceived justice, emotions, and behavioral intentions in the Taiwanese food and beverage industry

PurposeThe research framework of this study is based on tri-component attitude model (cognition-affect-conation) which explores consumers’ positive or negative emotions, as well as various types of thoughts and actions, triggered by their perceived justice in the context of service failure. This study aims to probe the possible mediating and moderating effects caused by the process where consumers form their thoughts and actions.Design/methodology/approachThis study conducts a survey to consumers after restaurant dining. This study collects data from 262 respondents and analyzes the data with the structural equation modeling.FindingsThe results indicate that perceived justice has significant effect on empathy, anger, positive word-of-mouth, repurchase intention and revenge. Empathy has a significant and positive effect on positive word-of-mouth. Anger has significant and positive effects on revenge and avoidance. Empathy is a mediator between perceived justice and positive word-of-mouth. Blame attribution and service failure severity are the moderators in the relationship between perceived justice and empathy/anger.Research limitations/implicationsConsumers might have experienced the scenarios described in the questionnaire and their responses might be based on recall of their previous dining experiences in other restaurants, thereby resulting in a time lapse problem and affecting the conclusions of this study.Practical implicationsIt is not adequate to gain consumers’ choices just demonstrate favorable customer perceived justice and empathy in today’s industrial highly competitiveness because blame attribution and perception of service failure severity result in different positive and negative emotions and behavioral intentions. Therefore, food and beverage industry must have a various recovery approaches to recover service failure and create a more appealing relationship with consumers.Originality/valueThis study investigates the relationships among perceived justice, emotions and behavioral intentions which are seldom discussed in the past studies. In addition, this study investigates the mediating effect of empathy in the relationship between perceived justice and positive word-of-mouth. The results of this study indicate that blame attribution and service failure severity are the moderators between perceived justice and emotions (empathy/anger). The mediator of empathy and the moderators of blame attribution and service failure severity can enhance the research gap in the context of service recovery for the tri-component attitude model.</jats:sec