EDI的安全性

本文介绍了实现ＥＤＩ安全性的两种国际标准，并在比较Ｉｎｔｅｒｎｅｔ所用的ＰＥＭ和ＥＤＩＦＡＣＴ国际标准的基础上得出结论：如果进一步增强ＰＥＭ的安全性功能，可以更好地在Ｉｎｔｅｒｎｅｔ上实现ＥＤＩ。最后，本文介绍了新一代具有安全性功能Ｉｎｔｅｒｎｅｔ上的ＥＤＩ软件－Ｔｅｍｐｌａｒ２．０。     

EDI在汽车工业的应用

ＥＤＩ（电子数据交换）作为成熟的电子商务技术和手段,在许多行业得到了应用,其中汽车行业是一个应用ＥＤＩ较普遍的典型行业,本以美国汽车工业ＥＤＩ应用为例,介绍了ＡＩＡＧ的ＥＤＩ应用模型,阐述了ＥＤＩ在生产用品／原材料管理方面的应用过程和涉及的ＥＤＩ单证,探讨了ＥＤＩ对传统商务方式的变革和我国ＥＤＩ发展的思路。     

EDI应用实例——广州EDI话费托收系统

介绍广州市电信局与广东省发展银行合作，应用ＥＤＩ技术进行电子话费托收项目的开发过程。开发过程主要分４个步骤：确定ＥＤＩ电子单证标准，ＥＤＩ电子报文的转换，建立贸易伙伴关系，上网传送ＥＤＩ电子单证。     

山东公共EDI网络系统及其应用

对山东公用ＥＤＩ网络交换系统的组成，网络拓扑，用户入网方式，以及实际应用中ＥＤＩ单证的电子化流程作了介绍，并列举了实例。     

浅谈ISDN与Internet的互联

由于ＩＳＤＮ可以提供Ｎ×６４ｋｂｉｔ／ｓ的通信速率，使Ｉｎｔｅｒｎｅｔ访问速度大大加快，广州市电信局准备利用商业网（基于大唐ＳＰ３０ＩＳＤＮ交换机）发展Ｉｎｔｅｒｎｅｔ业务，并采用ＣＩＳＣＯ公司的多协议路由器，ＩＳＤＮ与Ｉｎｔｅｒｎｅｔ两网互联后，丰富了接入方式，用户可通过路由器，Ｍｏｄｅｍ，ＩＳＤＮ适配器等方式通过ＩＳＤＮ网进入Ｉｎｔｅｒｎｅｔ。     

EDI电子数据互换（四）：EDI标准化

标准化是ＥＤＩ的主要特征。本文从放式ＥＤＩ概念模型出发，描述了ＥＤＩ电子单证和ＥＤＩ通信标准，ＥＤＩＦＡＣＴ应用级语法规则和ＥＤＩ编码标准。     

Internet收电子邮件的安全机制

近年来，Ｉｎｔｅｒｎｅｔ用户已不满足于简单电子邮件，要求提供多用途的和安全的电子邮件，为此出现了ＭＩＭＥ，ＰＥＭ，ＰＧＰＴ ＭＯＳＳ，Ｓ／ＭＩＭＥ，ＰＧＰ／ＭＩＭＥ，ＭＩＭＥｗｉｔｈＭＳＰ等多种方案。本文综述了这些方案，尤其对安全机制进行了详细的讨论。     

Internet的热门话题

随着Ｉｎｔｅｒｎｅｔ的发展，国际上出现了许多基于Ｉｎｔｅｒｎｅｔ的新产品和应用。本文首先分析Ｉｎｔｅｒｎｅｔ的业务发展现状，接着就５个目前最热门的话题包括：Ｉｎｔｅｒｎｅｔ商业化、Ｉｎｔｒａｎｅｔ、Ｉｎｔｅｒｎｅｔ电话、ＩｎｔｅｒｎｅｔＥＤＩ以及网络电脑逐一进行介绍。     

EDI应用级语法规则的新发展（上）

从ＥＤＩ单证标准化的发展历程，我国国家标准ＧＢ／Ｔ１４８０５－９３《电子数据交换用于行政、商业和运输业的应用级语法规则》所包含的内容出发，论述ＩＳＯ９７３５ＥＤＩ的应用级语法规则的新发展。为正在开展ＥＤＩ业务的各部门读者提供有益的参考。     

BIM框架指导EDI报文开发与应用的工程化方法

介绍了一种用于ＥＤＩ报文开发与应用的工程化理论，阐述了企业与信息模型化（ＢＩＭ）的概念，说明了用于ＵＮ／ＥＤＩＦＡＣＴ的ＢＩＭ框架的实践要素及ＢＩＭ框架所具备的优点。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks