in this paper an exponentially fitted finite difference method is presented for solving singularly perturbed two-point boundary value problems with the boundary layer. a fitting factor is introduced and the model equation is discretized by a finite difference scheme on an uniform mesh. thomas algorithm is used to solve the tri-diagonal system. the stability of the algorithm is investigated. it ...

Two dimensional nanostructures of group IV elements have attracted a great deal of attention because of their fundamental and technological applications. A graphene-like single layer of tin atoms, commonly called stanene, has recently been predicted to behave like a quantum spin Hall insulator. Here we report the atomic structure, stability and electron transport properties of stanene stabilize...

Agriculture resources and agriculture industrialization support information service platform is an important part of Agriculture affair support platform of west part national area of P. R. China, a key projects in the National Science & Technology Pillar Program in the Eleventh Five-year Plan Period. The system is designed as a 3 layers structure. Database support subsystem is the base layer. T...

by the explosive growth of b2b e-commerce transactions in international supply chains and the rapid increase of business documents in iran’s cross-border trading, effective management of trade processes over borders is vital in b2b e-commerce systems. structure of the localized model in this paper is based on three major layers of a b2b e-commerce infrastructure, which are messaging layer, busi...

The universal reliance on and hence the need for resilience in network communications has been well established. Current transport protocols are designed to provide fixed mechanisms for error remediation (if any), using techniques such as ARQ, and offer little or no adaptability to underlying network conditions, or to different sets of application requirements. The ubiquitous TCP transport prot...

a palladium composite membrane was prepared via electroless plating technique using organic-inorganic method during activation process. the ceramic support surface was modified by two tio2-boehmite and one γ-alumina layers to avoid pd penetration in support pores. thin and defect-free pd composite membrane was obtained by creating a relative smoothness on the ceramic support and using pd nanopa...

In the present work, B-ZSM-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. The TiO2- Bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. The uniform membrane intermediate layers with low permeation resistance were...

This paper presents a framework, which provides QoS (Quality of Service) support, for multimedia delivery over wireless Internet with cross-layer architecture. In this framework, we address the important issues for multiple media, such as audio, video, email, and web traffic, transmitted over wireless Internet. In order to have efficient QoS support for different types of media, we propose a cr...

The National Agricultural Decision Support System (NADSS) is a joint project with the U.S. Department of Agriculture and the University of Nebraska-Lincoln. The initial focus of the NADSS project is to improve the quality and accessibility of drought related knowledge, information, and data for drought risk management. At the core of the NADSS project is a software architecture for distributed ...

OBJECTIVES Issues related to lack of system usability and potential safety hazards continue to be reported in the health information technology (HIT) literature. Usability engineering methods are increasingly used to ensure improved system usability and they are also beginning to be applied more widely for ensuring the safety of HIT applications. These methods are being used in the design and i...