EPC is Developing-- Introduction to China EPC Working Group

The year of 2004 is the first year for EPC (Electronic Product Code ) entering China. EPC brings the new opportunity for RFID (Radio Frequency Identification Hardware) technology and boundless imagining space and market chance, and provides an open platform for global logistics development. China EPC Working Group organized the first Chinese EPC forum on April 22nd, 2004. After June of last year, there were almost 2 or 3 forums on EPC/RFID every month. Over ten ministries and commissions, such as Ministry of Information and Industry, Ministry of Science and Technology, have been paying much attention to the EPC development. International retailers, such as Wal-Mart, Metro,Tesco and DOD all support the development of EPC. Especially,Wal-Mart gave the mandate to it's first 100 suppliers, and all the goods shipped to Wal-Mart distributor center should be tagged since January 2005.     

发展中的EPC／RFID——中国标准化协会EPC与物联网标准化应用推进委员会介绍

2004年是中国EPC的元年,EPC使RFID无线射频技术焕发着青春,EPC/RFID将给全球物流发展提供一个开放的平台,给全球IT产业发展带来无限想象空间和市场机会。2004年4月22日中国标准化委员会主持召开了首届中国国际EPC与物联网论坛,进入6月后中国每个月大约都有2-3个关于EPC/RFID的论坛,EPC/RFID在中国快速传播着,信产部、科技部等十几个国家部委都在关注它的发展动态,国际上大的跨国零售公司,包括美国的沃尔玛、德国的麦德龙、英国的Tesco,美国国防部,都宣布支持EPC发展,沃尔玛更是为EPC/RFID全球发展推波助澜,发出了前100家…     

EPC global China成立暨2004中国EPC与物联网高层论坛在京举行

2004年4月22日,EPCglobalChina———全球产品电子代码(EPC)中国宣布正式成立,并在北京国际会议中心举行了隆重的揭牌仪式。中国国家标准化管理局李忠海局长与EPCglobal主席MargaretFitzgerald为EPCglobalChina揭牌。由国家标准化管理委员会主办,中国标准化研究院与中国物品编码中心承办,中国标准化协会等单位协办的“2004中国EPC与物联网高层论坛”也同期举行。会议由国家标准化管理委员会副主任、全国物流信息管理标准化技术委员会主任委员王忠敏和中国标准化协会秘书长马林聪主持。本次论坛还邀请了EPCglobal主席及专家、新加坡…     

EPC总承包项目综合集成风险管理

针对设计-采购-施工总承包(EPC)项目不同阶段的风险管理要求,设计了多元、动态的风险管理模块与评价指标体系,构建了EPC项目综合集成风险管理系统;综合运用德尔菲法、模糊层次分析、风险矩阵分析、模糊综合评价模型,构建了定性与定量相集成的风险评价方法;依照最低合理可行原则,设计了EPC项目综合集成风险管理流程.案例研究表明所构建的集成化风险管理方法的有效性,可以为EPC总承包商提供一整套规范、实用的风险管理与决策支持服务.     

中国的EPC管理与规划

EPC系统(物联网)是在计算机互联网和射频技术RFID的基础上,利用全球统一标识系统编码技术给每一个实体对象一个惟一的代码,构造了一个实现全球物品信息实时共享的实物互联网“Internet of things”。如果用公式来表示,可以表达如下:EPC代码 RFID Internet=EPC系统(物联网)。它将成为继条码技术之后,再次变革商品零售结算、物流配送及产品跟踪管理模式的一项新技术。诞生于20世纪70年代的全球统一标识系统(EAN.UCC系统),目前已经广泛应用于工业、商业、物流、服务等领域,极大地促进了全球商业的发展,大大优化了供应链的管理。EPC,作为透明供应链的有效技术手段,拓展了全球统一标识系统,使之更具有永恒的生命力。     

消失模铸造AZ91镁合金的研究

研究了ZA91镁合金消失模铸造时铸件的厚度,位置和真空度对铸件质量,组织及力学性能的影响,真空度是决定铸件质量的一个关键的工艺因素,无真空时浇注铸件易产生浇不足缺陷,但真空度过大又会导致形成粘砂和气孔等缺陷,真空浇注射明显细化组织,但真空度进一步增大时细化效果野 不明显,铸件显微组织具有很大的壁厚效应,然 位置对组织的影响与是否采用抽真空措施有关,铸件壁厚较小时,铸件的力学性能总体较差,断裂源自Mg/Mg17Al12界面、且主要是以解决理形式的脆性断裂。     

Development and characterization of oligonucleotide-tagged dye-encapsulating EPC/DPPG liposomes

Liposomes applications in health care include meanly their ability to carry drugs and genes inside the human body for therapeutic purposes. Nevertheless their applicability can extend far beyond and could be used as analytical tools in order to perform rapid, low-cost, sensitive and specific analyses. Their physical characteristics, such as large internal volume and extended surface area, render them ideal for these applications and specifically for improving the specificity and sensitivity of the analytical assay. The purpose of this study was to develop a simple, stable and low-cost oligonucleotide-tagged liposomal formulation consisting of EggPC and DPPG with a simple to synthesize thiol-reactive conjugate (Mal-SA) incorporated into the lipid bilayer of liposomes. The prepared liposomes, having also the water soluble dye Sulforhodamine B encapsulated in their inner cavity, were characterized in terms of their physicochemical (size, size distribution, zeta-potential, lipid content) and mechanical (morphology, rigidity) properties. The results showed that the final liposomal formulation could be used in the future as analytical tool for detecting pathogen strains of microorganism in biological milieu.     

RFID/EPC技术对包装业的影响

介绍了一种新兴的物品识别技术RFID(射频识别)技术,并阐述了与RFID技术相关的EPC标签和EPC系统,以及EPC系统的组成和重要特点,最后着重探讨了RFID/EPC技术在包装领域的作用和应用.     

EPC网络及其在制造业中的应用分析

1.E PC网络美国麻省理工Auto-ID中心正在联合世界上的产业领导者和专业机构设计一种给全球供应链带来巨大利润的RFID射频识别系统。这个系统由产品电子码(EPC)、RFID技术和基于EPCglobal标准的支持软件组成,称为EPC网络。一旦EPC技术开始发展,实现其商业化是有经验的标准制定团     

The EPC model for defining the output standard of an engineeringgraduate

This paper describes the model that has been developed by the Engineering Professors Council (EPC) to define the output standard of graduates from engineering programmes in the UK     

Economic design of the integrated multivariate EPC and multivariate SPC charts

The goal of engineering process control (EPC) is to minimize variability by adjusting some manipulative process variables. The goal of statistical process control (SPC) is to reduce variability by monitoring and eliminating assignable causes of variation. As suggested by Box and Kramer and others, it is possible to reduce both special cause and common cause variations by integrating EPC and SPC. In the integrated multivariate EPC (MEPC) and multivariate SPC (MSPC) charts, we propose some statistical and economic criteria, such as the average Euclidean distance from the target vector and the average quality cost (AQC) to evaluate the performance of the MEPC/MSPC charts. The traditional average run length (ARL), average Euclidean distance and AQC of three MSPC charts are investigated and compared. The results of the simulations show that the MEPC/MGWMA chart is more effective and more economical than both the MEPC/MEWMA chart and the MEPC/Hotelling multivariate chart in detecting small shifts of the mean vector. Copyright © 2006 John Wiley & Sons, Ltd.     

消失模铸渗SiC-Cr-RE耐磨铸铁

采用消失模铸渗法,在聚苯乙烯(EPS)泡沫模型表面涂刷铸渗涂料,浇注后铁水渗入涂料层,得到表面耐磨铸铁。铸渗涂料的主要组成为SiC粉、EPS粉、Cr-Fe粉、RE添加剂、粘结剂等。研究了表面渗层的组织及显微硬度,用ML-100磨粒磨损试验机测试了渗层的耐磨性。试验表明渗层组织中的珠光体及片状石墨比基体细化,渗层显微硬度是基体铸铁的2.1倍,渗层的磨损量是基体铸铁的33%。分析探讨了表面渗层耐磨性较高的原因。     

带有质量特性约束的SPC与EPC集成控制的经济设计

针对由一阶动态过程与ARIMA(0,1,1)噪声组成的系统,分析了异因对整个系统的影响,并给出一种带有质量特性约束的经济设计模型.该方法不仅从经济角度保证了整个生产过程成本的条件最小化,同时兼顾对产品质量特性的要求.研究结果为方差EWMA控制图的设计提供了一定的理论依据.     

EPC 2000 – State of play nearly two years on

The European Patent Convention as revised in 2000 (EPC 2000) [1] entered into force on 13 December 2007. While the revision changed rather little in terms of substantive patent law, it did change procedural practice compared to the EPC in force before, drafted in 1973. This article looks at some key features of the European patent grant and post-grant procedures that either have changed fundamentally or have been newly introduced, and their effect on patent document collections.     

Study of the Interface between Steel Insert and Aluminum Casting in EPC

The effective surface treatment method for steel insert composited with Al base metal by expendable pattern casting （EPC） process and the bonding interface between steel insert and Al base metal were investigated.It was found that Zn plating on steel insert was effective on improving the bonding property between steel insert and Al base metal in EPC process.Zn is thought to promote the formation of diffusion layer.But almost none content of Zn was observed in the boundary which had been plated on the steel insert.A diffusion layer consisting of Al,Si and Fe was formed at the insert/alloy interface and its hardness was higher than the steel insert as matter of course Al base metal.This layer turned out to be intermetallic compounds of Al-Si-Fe system.Higher pouring temperature promoted the diffusion of Fe into Al alloy,so Fe content in intermetallic layers increased at higher pouring temperature.The layer nearest to steel disappeared due to applied pressure.     

The 3rd China International EPC/RFID Forum Was Hold

On June 22, 2005, the 3rd China International EPC/RFID summit forum, hosted by Standardization Administration of the People's Republic of China (SAC), jointly sponsored by the China National Institute of Standardization (CNIS) and Article Numbering Center of China (ANCC), was held in Beijing.     

EPC与“物联网”——引发供应链革命的导火线

EPC系统是在全球统一标识系统(EAN.UCC系统)和计算机互联网的基础上,利用射频识别技术(RFID)、无线数据通信等技术,给每一个实体对象一个惟一的代码,构造的一个覆盖世界上万事万物的实物互联网,通常简称为“物联网”,可以提高物流供应链管理水平、降低成本,被誉为具有革命性意义的新技术。有人说EPC是未来E时代的转折点,也有人说EPC将引发供应链管理的革命,有人说EPC是进入E时代的桥梁,也有人说EPC是引发互联网二次革命的导火索,还有人说EPC是世界上万事万物的实物互联网……,凡此种种,无不表明EPC系统是当前e时代的新发展、新趋势。     

Analysis of synergy degree and its influencing factors in hydropower EPC project management

The use of engineering procurement construction (EPC) mode is currently a trend in hydropower engineering construction. The clarification of the internal relationship between hydropower EPC projects and the realization of synergy has great significance in improving management efficiency and implementation effect. In this work, a three-dimensional system and a system model of hydropower EPC project management synergy are constructed. The mechanism and factors that influence the degree of management synergy are analyzed on the basis of management synergy theory. Furthermore, the evaluation index system and the degree of synergy model are established, and grey relational analysis is utilized to identify the key factors that affect the synergy degree. Thus, this study aims to facilitate the hydropower EPC project management synergy, provide a quantitative method for synergy degree evaluation, and propose corresponding promotion strategies. Results show that the order degree of each subsystem presents a steady upward trend. Specifically, the order degree of the subsystem at the trial operation stage is low, which is the major restriction on the further improvement of the synergy degree of EPC project management. The key factors in improving the synergy level of hydropower EPC project management are mainly concentrated in the information and organization synergy subsystems, including the construction degree of information platform, the performance of functions, the timeliness of information transfer, and the functions of the information platform.     

用铸渗工艺对消失模铸件件进行表面合金化的研究

利用干砂消失模铸造工艺,对铸铁件表面合金化铸渗机理进行了研究,通过建立数学模型,对铸渗过程中铁水传输进行了理论分析,给出了铸渗量与浇口的大气压力、铁水静压力、渣液阻力及附加压力的关系,提出了铸渗量大小主要取决于铸渗孔道半径的新观点,用正交试验对合金涂层中合金粉粒度,合金粉加入量、溶剂加入量及涂层中聚苯乙烯泡沫加入量等进行了考证,得出最佳工艺配方为：合金粉粒度75－100目,泡沫加入量30％－50％（ψ（B））;溶剂加入量4％,在配制涂料时,适当加入一定量泡沫珠粒,有利于母液透,这与理论推导结果相符,易获得3mm以上合金层厚度,合金层具有珠江体基体及大量M7C3碳化物,并且有高硬度及高抗磨性。     

The generalized EPC method for the non-stationary probabilistic response of nonlinear dynamical system

It is well known that the non-stationary response probability density function (PDF) plays an important role in the reliability and failure analysis. With current approximate or numerical methods, the non-stationary approximate PDF is generally obtained in terms of the ones at the discrete time instants. Repeated computation must be conducted for the ones at other time instants since the response PDF at only one time instant can be obtained after performing the solution procedure. Thus, the computational efficiency suffers a major setback. In this paper, the exponential polynomial closure (EPC) method is further improved and enhanced to obtain the completely non-stationary PDF solution, which is distributed continuously in the time domain. It takes the temporal base function into the PDF approximation. The unknown coefficients in the EPC solution are generalized to be explicit functions of the time parameter. With the least squares method, the explicit time functions can be determined based on the few simulated response PDF values. This implementation makes the continues PDF distribution in the time domain available, which greatly improves the computational efficiency without the repeating computation. Two typical nonlinear systems under stationary and non-stationary random excitations are taken as examples to illustrate the efficiency of the proposed method. Numerical results show that the results obtained by the proposed method agree well with the simulated results. In addition, the relationship between the explicit time function and the modulate function is discussed.