RFID技术在化工危险品仓库管理中的应用

本文针对危险化学品的危险特性,指出了建立现代化的安全管理制度的重要性,而RFID是实现企业和社会信息化的重要技术之一,它能在显著提升企业竞争力和业务绩效以及降低总体应用成本。     

Numerical analysis of turbulent structure in compound meandering open channel by algebraic Reynolds stress model

The turbulent flow in a compound meandering channel with a rectangular cross section is one of the most complicated turbulent flows, because the flow behaviour is influenced by several kinds of forces, including centrifugal forces, pressure‐driven forces and shear stresses generated by momentum transfer between the main channel and the flood plain. Numerical analysis has been performed for the fully developed turbulent flow in a compound meandering open‐channel flow using an algebraic Reynolds stress model. The boundary‐fitted coordinate system is introduced as a method for coordinate transformation in order to set the boundary conditions along the complicated shape of the meandering open channel. The turbulence model consists of transport equations for turbulent energy and dissipation, in conjunction with an algebraic stress model based on the Reynolds stress transport equations. With reference to the pressure–strain term, we have made use of a modified pressure–strain term. The boundary condition of the fluctuating vertical velocity is set to zero not only for the free surface, but also for computational grid points next to the free surface, because experimental results have shown that the fluctuating vertical velocity approaches zero near the free surface. In order to examine the validity of the present numerical method and the turbulent model, the calculated results are compared with experimental data measured by laser Doppler anemometer. In addition, the compound meandering open channel is clarified somewhat based on the calculated results. As a result of the analysis, the present algebraic Reynolds stress model is shown to be able to reasonably predict the turbulent flow in a compound meandering open channel. Copyright © 2005 John Wiley & Sons, Ltd.     

应用型高技能数控人才实训模式的研究——以井冈山大学工学院为例

本文介绍了应用型高技能数控人才的培养目标,从加大设备投入、安装通用软件、保证学生实践时间、建立一支高水平师资队伍、加强校企合作这些方面着手,建立了一套较为完善的实训模式,以增强学生的编程、操作、软件应用等方面的能力。     

论公路建设项目中的成本管理

探讨了公路建设项目成本管理中遇到的问题,分析了产生这些问题的原因,提出了相应的措施,总结了项目管理的经验。     

学生管理中的沟通策略——浅谈单亲家庭子女的学校教育

本文在对单亲家庭子女的性格作客观分析的基础上,探讨了学校教育管理中如何引导单亲家庭子女健康成长的问题。主要提出了学生管理中的五大沟通策略。     

A posteriori error estimates for a time discrete scheme for a phase-field system of Penrose-Fife type

A time discrete scheme is used to approximate the solution toa phase field system of Penrose–Fife type with a non-conservedorder parameter. An a posteriori error estimate is presentedthat allows the estimation of the difference between continuousand semidiscrete solutions by quantities that can be calculatedfrom the approximation and given data.     

负债条件下高校财务管理的创新

由于高校大规模的银行负债的出现,高校的经济要素已从财政拨款、事业收费的二元结构转变为三元结构。三元结构改变了高校一系列的经济关系。高校财务管理体系制度因其长期基本不变而日渐示弱。改进这种示弱状态需要在财务管理制度、核算、监管等方面进行管理创新。     

隐性知识与高校档案管理工作

介绍了隐性知识,分析了隐性知识在高校档案管理工作中的体现,论述了隐性知识显性化在高校档案管理工作中的实现。     

开源软件在网络教育中的应用

论述了在教育领域中使用开源软件的必要性,介绍了几种应用于网络教育的开源软件,主要包括服务器软件、工作站软件和课程管理系统。     

Microstructure dependent dynamic fracture analyses of trabecular bone based on nascent bone atomistic simulations

Trabecular bone fracture is closely related to the trabecular architecture, microdamage accumulation, and bone tissue properties. Primary constituents of trabecular tissue are hydroxyapatite (HA) mineralized type-I collagen fibers. In this research, dynamic fracture in two dimensional (2-D) micrographs of ovine (sheep) trabecular bone is modeled using the mesoscale cohesive finite element method (CFEM). The bone tissue fracture properties are obtained based on the atomistic strength analyses of a type-I collagen + HA interfacial arrangement using molecular dynamics (MD). Analyses show that the presented framework is capable of analyzing the architecture dependent fracture in 2-D micrographs of trabecular bone.