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中英文对照外文翻译文献(文档含英文原文和中文翻译)逆变器1引言逆变器是一种电动装置，转换成直流电（DC），交流电流转换的AC（交流）可以在任何所需的电压和频率使用适当的变压器，开关，控制circuits.Solid状态逆变器有没有移动部件，用于广泛的应用范围从小型计算机开关电源，高压大型电力公司电力，运输散装直接电流应用。
逆变器通常用于提供交流电源，直流电源，如太阳能电池板或电池。
逆变器的主要有两种类型。
修改后的正弦波逆变器的输出是类似方波输出，输出变为零伏前一段时间切换积极或消极的除外。
它是简单，成本低，是大多数电子设备兼容，除敏感或专用设备，例如某些激光打印机。
一个纯正弦波逆变器产生一个近乎完美的正弦波输出（<3％的总谐波失真），本质上是相同的公用事业提供电网。
因此，它是与所有的交流电的电子设备兼容。
这是在电网领带逆变器使用的类型。
它的设计更复杂，成本5或10倍以上每单位功率电逆变器是一个高功率的电子振荡器。
它这样命名，因为早期的机械AC到DC转换器工作在反向，因而被“倒”，将直流电转换AC.The变频器执行的整流器对面功能。
2应用2.1直流电源利用率逆变器从交流电力来源，如电池，太阳能电池板，燃料电池的直流电转换成。
电力，可以在任何所需的电压，特别是它可以操作交流电源操作而设计的设备，或纠正，以产生任何所需的voltage Grid领带逆变器的直流送入分销网络的能量，因为它们产生电流交替使用相同的波形和频率分配制度提供。
他们还可以关掉一个blackout.Micro逆变器的情况下自动转换成交流电电网的电流直接从当前个别太阳能电池板。
默认情况下，他们是格领带设计。
2.2不间断电源不间断电源（UPS），电池和逆变器，交流电源，主电源不可用时使用。
当主电源恢复正常时，整流提供直流电源给电池充电。
2.3感应加热逆变器的低频交流主电源转换到更高频率的感应加热使用。
要做到这一点，首先纠正交流电源提供直流电源。
电子信息工程电路编程中的AT89C51单片机译文标题电路编程中的AT89C51单片机AT89C51 In-Circuit Programming 原文标题作者Robert W.Sparks等译名国籍美国斯帕克等W.罗伯特Atmel Corporation原文出处摘要本应用说明的是ATMEL公司AT89C51的电路可编程闪存的微控制器。
为在电路可编程AT89C51的应用提出了与应用程序相关的例子，它的修改要求支持在线编程。
这种方法显示在该应用程序中的AT89C51单片机可通过商业电话线远程改编。
本应用笔记中描述的电路，仅支持5伏电压下编程，需要使用一个AT89C51-XX-5。
标准A T89C51的需要12伏电压。
该应用程序的软件可从ATMEL下载。
总论当不在进行程序设计的时候，在电路设计中的AT89C51设计将变得透明化。
在编程期间必须重视EA/VPP这一脚。
在不使用外部程序存储器的应用程序中，这脚可能会永久接到VCC。
应用程序使用的外部程序存储器要求这一脚为低电平才能正常运行。
RST在编程期间必须为高电平。
应该提供一种方法使得电路通入电源以后，使RST代替主要的复位电路起到复位的作用。
在编程过程中，PSEN必须保持低电平，在正常运行期间绝不能使用。
ALE/ PRO在编程过程中输出低电平，在正常运行期间绝不能使用在编程过程中AT89C5I / 端口是用于模式应用程序，地址和数据选择的，可能要该控制器从应用的电路隔离。
如何做到这一点取决于应用程序输入端在编程过程中，控制器必须与应用电路的信号来源隔离。
带有三个输出状态的缓冲区在应用程序之间插入电路和控制器，同时在编程时缓冲区输出三种状态。
一个多路复用器用于信号源之间进行选择，适用于任何一方的应用电路或编程控制器电路的信号输出端如果应用的电路可以允许端口在编程过程中的状态变化，则不需要改变电路。
如果应电路的状态，必须事先在编程过程中的保持不变，可能在控制器和应用电路中插入锁存。
电容器中英文对照外文翻译文献(文档含英文原文和中文翻译)译文:1电容器的选择本文为电化学双层电容器或超级电容器提供在一台常规电容器，简明的介绍新生的电化学双电层电容器或超级电容器。
电容器是存放电能并且协助过滤的根本电路元素。
电容器有二个主要应用; 其中之一是充电或释放电的作用。
这个作用适用于电源平流滤波电路，微型计算机备用电路和利用期间充电或释放电的定时器电路。
其他是阻拦DC 流程的作用。
这个作用适用于提取或消灭特殊频率的过滤器。
这是其中不可或缺的优秀电路所需的频率特性。
电解电容是在充分的标度商业化的下一代电容器。
他们类似电池在细胞建筑，但是阳极和负极材料依然保持不变。
他们是铝，钽和两个陶瓷电容电解质的地方与他们所使用的液体固体分离器/ 对称的电极。
电化学电容器（EC），往往被称为超级电容器或超级电容，存储电荷的双层电荷在1层表面电解质界面，主要在高电位表面的碳。
由于高电位表面是薄的双重层，所以这些设备可以有一个非常高的比和体积电容。
这使得他们能够结合以前无法实现的电容用无限的电荷密度/放电循环寿命。
每单元的工作电压，只受击穿电位电解质的影响，通常<1或“<3伏的每个细胞水性或有机电解质分别。
该存储的概念电力能源双电层这是形成于界面之间的固体电解质和一直都知道自19世纪末期。
第一电气设备使用双层充电储存在报告1957年H.I.贝克尔的通用电气（美国专利2800616）。
不幸的是，贝克尔的设备是不切实际的，同样一个充斥电池，电极都需要沉浸在一个容器电解质，并且该设备从未商业化。
贝克尔那样做了，但是随后发现电容值已经被标准石油化学家公司俄亥俄州（索奥）的罗伯特A赖特迈尔发明并且现在正在普遍使用。
他的专利（美国3288641），在1962年年底提出并获1966年11月，和一个后续专利（美国专利3536963）由资深研究员索奥唐纳德L.布斯在1970年，形式为基础随后的专利和期刊数百文章涉及ec技术的所有方面。
外文出处：Farhadi, A. (2008). Modeling, simulation, and reduction of conducted electromagnetic interference due to a pwm buck type switching power supply. Harmonics and Quality of Power, 2008. ICHQP 2008. 13th International Conference on, 1 - 6.Modeling, Simulation, and Reduction of Conducted Electromagnetic Interference Due to a PWM Buck Type Switching Power Supply IA. FarhadiAbstract:Undesired generation of radiated or conducted energy in electrical systems is called Electromagnetic Interference (EMI). High speed switching frequency in power electronics converters especially in switching power supplies improves efficiency but leads to EMI. Different kind of conducted interference, EMI regulations and conducted EMI measurement are introduced in this paper. Compliancy with national or international regulation is called Electromagnetic Compatibility (EMC). Power electronic systems producers must regard EMC. Modeling and simulation is the first step of EMC evaluation. EMI simulation results due to a PWM Buck type switching power supply are presented in this paper. To improve EMC, some techniques are introduced and their effectiveness proved by simulation.Index Terms:Conducted, EMC, EMI, LISN, Switching SupplyI. INTRODUCTIONFAST semiconductors make it possible to have high speed and high frequency switching in power electronics []1. High speed switching causes weight and volume reduction of equipment, but some unwanted effects such as radio frequency interference appeared []2. Compliance with electromagnetic compatibility (EMC) regulations is necessary for producers to present their products to the markets. It is important to take EMC aspects already in design phase []3. Modeling and simulation is the most effective tool to analyze EMC consideration before developing the products. A lot of the previous studies concerned the low frequency analysis of power electronics components []4[]5. Different types of power electronics converters are capable to be considered as source of EMI. They could propagate the EMI in both radiated and conducted forms. Line Impedance Stabilization Network (LISN) is required for measurement and calculation of conducted interference level []6. Interference spectrum at the output of LISN is introduced as the EMC evaluation criterion []7[]8. National or international regulations are the references forthe evaluation of equipment in point of view of EMC []7[]8.II. SOURCE, PATH AND VICTIM OF EMIUndesired voltage or current is called interference and their cause is called interference source. In this paper a high-speed switching power supply is the source of interference.Interference propagated by radiation in area around of an interference source or by conduction through common cabling or wiring connections. In this study conducted emission is considered only. Equipment such as computers, receivers, amplifiers, industrial controllers, etc that are exposed to interference corruption are called victims. The common connections of elements, source lines and cabling provide paths for conducted noise or interference. Electromagnetic conducted interference has two components as differential mode and common mode []9.A. Differential mode conducted interferenceThis mode is related to the noise that is imposed between different lines of a test circuit by a noise source. Related current path is shown in Fig. 1 []9. The interference source, path impedances, differential mode current and load impedance are also shown in Fig. 1.B. Common mode conducted interferenceCommon mode noise or interference could appear and impose between the lines, cables or connections and common ground. Any leakage current between load and common ground couldbe modeled by interference voltage source.Fig. 2 demonstrates the common mode interference source, common mode currents Iandcm1 and the related current paths[]9.The power electronics converters perform as noise source Icm2between lines of the supply network. In this study differential mode of conducted interference is particularly important and discussion will be continued considering this mode only.III. ELECTROMAGNETIC COMPATIBILITY REGULATIONS Application of electrical equipment especially static power electronic converters in different equipment is increasing more and more. As mentioned before, power electronics converters are considered as an important source of electromagnetic interference and have corrupting effects on the electric networks []2. High level of pollution resulting from various disturbances reduces the quality of power in electric networks. On the other side some residential, commercial and especially medical consumers are so sensitive to power system disturbances including voltage and frequency variations. The best solution to reduce corruption and improve power quality is complying national or international EMC regulations. CISPR, IEC, FCC and VDE are among the most famous organizations from Europe, USA and Germany who are responsible for determining and publishing the most important EMC regulations. IEC and VDE requirement and limitations on conducted emission are shown in Fig. 3 and Fig. 4 []7[]9.For different groups of consumers different classes of regulations could be complied. Class Afor common consumers and class B with more hard limitations for special consumers are separated in Fig. 3 and Fig. 4. Frequency range of limitation is different for IEC and VDE that are 150 kHz up to 30 MHz and 10 kHz up to 30 MHz respectively. Compliance of regulations is evaluated by comparison of measured or calculated conducted interference level in the mentioned frequency range with the stated requirements in regulations. In united European community compliance of regulation is mandatory and products must have certified label to show covering of requirements []8.IV. ELECTROMAGNETIC CONDUCTED INTERFERENCE MEASUREMENTA. Line Impedance Stabilization Network (LISN)1-Providing a low impedance path to transfer power from source to power electronics converter and load.2-Providing a low impedance path from interference source, here power electronics converter, to measurement port.Variation of LISN impedance versus frequency with the mentioned topology is presented inFig. 7. LISN has stabilized impedance in the range of conducted EMI measurement []7.Variation of level of signal at the output of LISN versus frequency is the spectrum of interference. The electromagnetic compatibility of a system can be evaluated by comparison of its interference spectrum with the standard limitations. The level of signal at the output of LISN in frequency range 10 kHz up to 30 MHz or 150 kHz up to 30 MHz is criterion of compatibility and should be under the standard limitations. In practical situations, the LISN output is connected to a spectrum analyzer and interference measurement is carried out. But for modeling and simulation purposes, the LISN output spectrum is calculated using appropriate software.基于压降型PWM开关电源的建模、仿真和减少传导性电磁干扰摘要：电子设备之中杂乱的辐射或者能量叫做电磁干扰(EMI)。
电子商务供应链管理中英文对照外文翻译文献(文档含英文原文和中文翻译)翻译:电子商务对动态供应链管理的影评价摘要最近，互联网及相关信息和通信技术（ICT）使得成本效益的信息能够在供应链的独立各方之间传播．新的供应链战略，如供应商管理库存（VMI业务）协同规划，预测与补货（CPFR），有效消费者反馈（ECR），已开始利用这些新的沟通渠道，特别是在供应链的零售终端．电子商务加强了供应链上的制造商和材料零组件供应商，他们以前不能被很好理解和开发．本文的目的是建立供应链模式的电子商务使信息和通讯技术（ICT）的影响量化，特别是其对动态行为的影响．论文包含简单却充满活力的模型，其对将要实施的供应链动态行为模式下的电子商务提出了相当数量见解．关键词供应链管理动力学；电子商务；EPOS(创新电子支付系统)；供应商管理库存；网上购物1. 总述当ICT型的电子商务提出，让供应链中的企业共享市场信息，使得“1-2-1企业”成为可能时，（Peppers&Rogers，1997）几乎没有分析或可量化的证据证明它真正会在配送顾客所需上提高企业的整体绩效．通常的建议是，通过ICT在供应链中的所有企业传递供应链中的信息会提高企业绩效．事实上，最近的研究（Hong-Minh et al.,2000）已经表明，通过供应链的“啤酒游戏”（Ster man，1989年），企业之间简单的传递信息会有一个不利的影响．这是由于伴随着更多的可用信息，调度程序需要知道如何处理它．有很多种方法能使创新的信息流在供应链里得到应用．Kiely（1998）提供了一个良好的起点，他特别强调用需求数据来达到预测的目的．在这篇文章中我们分析4个能够成立的ICT方案的影响，此项分析使通过调查牛鞭效应（Letal,1997a,b）用两种不同的方法把它们传统的供应链加以比较．第一种办法是根据管理飞行模拟器的结果分析啤酒游戏．第二种方法是基于一个量化Z变换分析，其中的应用工具是Disney和To will（2002）高度提倡的．比较和对比这两种方法的目的是评价电子商务在供应链动态质量评估方面的影响．“牛鞭效应”是一项重要措施，因为它是体现出了一个表现不佳的供应链的症状．（琼斯和西蒙，2000年）．“牛鞭效应”是一个生产适应成本的代理办法（Stalk and Hout，1990年），并表明持有“以防万一”的库存的意义是为了缓和不明因素．牛鞭效应相当多以实验和观察为依据的证据包括最近的例子显示：供应商两级订单的粮食部门上游的数据是电子销售点（EPOS）的数据的10倍（Jones and Simons,2000）．汽车部门收入订单和供应商只有一个单一的梯队供应链的差异比率大概是1：2（Naim et al.,2002）．这5个供应链战略是：传统供应链战略——即在供应链上四个"串联"的梯队．网上购物——即分销网络是单道的，信息和物品 在最终消费者和产品供应商之间直接流动．缩减型供应链——即供应链里的一个梯队被移除．供应商管理库存（VMI）——这是模拟通过对供应链里的双方企业制定议定书，给予必要的库存和销售信息，权力和责任给供应商，以便管理客户的库存．电子销售点（EPOS）——市场资讯在供应链中的所有企业之间互传．尽管各种电子商业的情况，可以由四个组四个硕士课程学生根据自己的学识在这两个学术和实践上进行战略的审查或者执行．正是这些大师的学生在实施啤酒游戏．2. 方法论改进个别制造商和供应链的动态行为的研究已是人所共知．最近期的研究方法，可分为下列四类：管理游戏：例如啤酒的游戏对于说明的不同供应链战略的益处来说是有用的．这是麻省理工学院于五十年代末发明的．（sterman，1989）从游戏本身来说，游戏中大致没有什么可以被严格证明．从这个意义上说，游戏是有限制的．但他们确实提供了有价值的证据，并是一个良好的学习手段．其他作者扩展或用计算机处理了啤酒游戏包括van Ackere et al（1993），Kaminsky和Simchi-Levi（1998），Lambrecht和Dejonckheere（1999）．实证研究:很多位作者调查了ICT的冲击对供应链的影响．包括Holmstromm（1998），Fransoo和Wouters（2000），Kaipia，Holmström和Tanskanen（2000）．然而，此种贡献在已知战略实施以后，量化了改进性能，即不存在预测要素和集，并且研究的焦点就是要找出最佳做法．不幸的是，它并非总是能够比较信息和通信技术的推行策略，其直接原因是由于这些策略在不同性质的环境中实施．统计：这种类型的贡献，通常提供关于需求的特性的影响的统计见解 ，例如标准差和相关性，以及供应链特性，例如首要时间和库存成本中的信息路径和牛鞭效应或需求扩增．统计方法经常被用来量化真实情况的表现．然而，这些方法未能表现出如何减少或消除有害的动态影响，如“牛鞭”，并很少得到从技术上深入探讨影响系统结构性能的原因和结果．这种类型最近的重大贡献包括Lee, So and Tang （2000）,Chen, Ryan and Simchi-Levi （2000），Chen，Drezner，Ryan and Simchi-Levi（2000）．模拟与系统动力：它是由Forrester（1961）提出，是一种在大型非线性系统内调查动态效果方法，且不诉诸复杂的数学控制理论模型（Edghill和Towill，1989年）．仅用模拟方法虽然繁琐，费时，且只提供有限的洞察力（Popplewell和Bonney，1987），但它们确有先发优势，能在模型非线形的同时避免复杂的数学．以前利用模拟所做的工作是非常多产的，其中包括（但绝不仅限于）Forrester（1961），and Coyle（1982）,他研究了传统的供应链结构，Cachon andFisher（1997）和Waller,Johnson和Davis （1999）他们研究过VMI．连续控制理论技术:用于生产和库存控制．首先由1978年诺贝尔经济学奖得主赫伯特西蒙（由于他在工作机构动态上的出色研究）第一次提出．西蒙（1952）描述了如何使用线性确定性控制理论来进行生产和库存控制．Axsäter（1985）陈述了一个有用的对于早期工作的评论性论文，总结了这个领域的优势和和劣势．他的结论是，控制理论“说明了非常好的动态效果和反馈”，但不能解决测序和生产批量的问题．瑞典的Linkoping 大学的生产经济学学院的大量研究已被记入文献．他们已经在运用拉普拉斯变换和经济技术，如MRP系统（Grubbstrom,1967）的净现值．连续控制理论受到这样的困扰，即一些调度和订货情况本来就是离散的，而且离散时间的延误的连续表述在数学上是很复杂的．离散控制理论，能够很有效地对抽样数据系统进行调查．例如：调度和订货系统和本质上离散的计算机系统Vassian（1955）从西蒙在连续领域的工作中得到灵感，采用离散控制理论研究了一个生产调度算法．De Winter （1966），在关于新型的供应链结构可能仅有的两个成果的其中之一里，寻找一种用在海军供应链上的集中控制存货．Deziel和Eilon（1967）描述了一个重大的应用．Burns和Burns and Sivazlian（1978）研究一个拥有四个级别的使用的Z变换的传统供应链．Bonney和Popplewell（1988）研究了MRP系统．Dejonck heeretal.（2003a），一直在用Z变换调查共同控制结构中共同预测机制的牛鞭表现．Disney（2001）一直采用离散控制理论来调查供应商管理库存供应链．离散控制理论的缺点在用到数学的时候往往涉及冗长而乏味代数操控．本文中所涉及的方法都是用来分析结果的．例如啤酒游戏的结果，或是在各种情况的ICT下决定牛鞭效应的范围和程度．将这些分析与以前公布的结果进行直接比较，（Hong-Minhetal.，2000）得到了相违背的结果．啤酒游戏的结果包括结构性问题和人类行为方面的问题．后者特征可能包括游戏玩家对游戏理解不够，不确定性决策和错误以及从顾客到供应商订单传送中出错．这时候分析型的Z变换方法被用来比较目标和结果，并用它来推导出供应链牛鞭效应中确定性的反馈系统结构的影响．如果认为ICT 系统将处理供应链中数量庞大的信息交易，并且管理例外的情况时人为干扰影响是有限的．那分析方法就更为重要了．3. 五种供应链的描述这五种供应链研究的设想由下进行总结．下面是对每种供应链的简短说明．3.1 传统供应链传统供应链的特点是由4个“串联”起来梯队组成一个供应链．每个梯队只接收有关当地库存水平和销售的信息．然后每个梯队按照当地供应商的存货水平，销售情况及以前的未取货订单来制定定单（Sterman,1989）．3.2 缩减型供应链缩减型供应链是指供应链中的梯队减少了．例如对于的供应链来说，这就代表了零售梯队已经融入于信息和物质流．这是一个用ICT 来缩减梯队的供应链．作为提高供应链的动态性的有效机制，梯队缩减已经被Wikner,Towill和Naim（1991）确认．3.3 网上购物网上购物是指生产商直接从最终消费者那里接到订单（可能像戴尔一样通过互联网），并在生产和分销的第一时间将产品直接邮购给最终消费者．这样的供应链策略与传统的仅一个梯队的供应链具有相同的基本结构．3.4 EPOS可用型供应链EPOS可用型供应链是指最终消费者的销售对于供应链中的所有成员都是可见的．例如，在很多杂货供应链中，通过互联网可以获得EPOS数据．这些数据或是直接从零售商那得到的或是通过第三方得到的．供应链成员可用这些数据对未来的情况进行预测．具体来说，在这种策略中，每个梯队可以用最终消费者的销售作为自己的规划建议，但每梯次仍然需要提供（如果可能的话）他的客户所订的货物．Dejinckheere，Disney，Lambrecht 和Towill（2001）从Mason-Jones（1998）的模拟方法中得到启发，利用Z 变换对这项策略已经进行了全面调查．3.5 供应商管理库存（VMI）VMI具体表述如下：在一个有两个梯队的VMI的关系中供应商（分销商）管理，消费者（零售商）的库存．分销商拥有零售商的销售和库存水平的资料．在此情况下零售商并不给分销商下订单，而是零售商相信分销商供给足够数量的库存来保证零售商有足够的（不是太多）库存．VMI策略的支持者有DisneyHolmstrom，Kaipia和Towill（2001），他们支持供应链中的VMI梯队．在这种情况下，其他的梯队（仓库和工厂）按传统的模式运行．4. ICT对供应链动力学的影响4.1 啤酒游戏的结果Hong-Minh et al.（2000）分析了四个不同的团队采用四种不同的供应链策略的结果，其中的一个团队采用的是前面描述果过的EPO S型供应链．虽然研究结果表明信息共享好处多多，（Mason-Jones and Towill,1997）,令人惊讶的是EPOS策略的效果是最差的．当EPOS策略减小了供应链里牛鞭效应的程度是，作为代价的是长时间的存货积压（负的净存货）．得出的结论是虽然市场信息及时的在供应链的各个梯队得以分享，供应链里的各方仍有他们自己的订货规则．这就是说，各方没有共同协作．虽然共享市场信息确实是一件好事，但只有把它作为一个商定的整体供应链的决策策略的一部分时，它才会产生收益．（Mason-Jones,1998）为了测试这一假说，EPOS 策略被加上一些特性后重新运行，这些策略包括所有的参与者参与协同规划，预测与补货,也就是CPFR ．作为一个涉及16名学生的国际运输方向的硕士课程，啤酒游戏也由目前的作者运行两次．第一次的啤酒游戏按传统模式运行．那就是，啤酒严格按Sterman （1989）所定的规则运行 ．第二次的啤酒游戏在学生团结协作下进行．不同的集团重新制定了四个不同的ICT 供应链策略．第一届四阶段时期，需求模式（即所有集团回应）被由一个8面骰子随机抽出，从时间5（两个游戏中指25）需求由一个20片面的骰子产生．为了达到本文的目的，我们对第二组的结果进行了分析．不同的绩效措施被从游戏收集，他们已被总结成方程式1（Chenetal ,2000）．2222//CONS ORATE CONS CONS ORATE ORATE i i i i Bullwhip σσμσμσ==这个等式给了衡量牛鞭效应的方法.除了牛鞭措施的衡量，我们还在啤酒游戏中采用了典型性能指标，那就是库存成本．每得到一件货物的库存罚0.5英镑，每少一件库存花费1英镑．股票出招致费用£1.00．库存成本是一个重要的度量因素，因为它最终决定我们能在何种程度上满足顾客以及确定过期库存的危险型．严重的积压成本是有道理的．因为无论我们将供应链的波动程度控制的多么好，如果我们不能满足最终消费者的话，我们最终会被行业所抛弃．游戏的结果汇总在附录中．库存费用作为一个正常能被达到的相对排名从而在在某一特定的供应链策略的实际梯队数量中独立出来．因此，我们将惩罚有较少梯队的供应链．此外，两种EPOS 的结果都会被显示出来．第一个是在研究中做过并在本文中描述过的，它被定义为EPOS-CPFR ,第二个（叫作EPOS-no CPFR ）是基于被Hong-minhetal.（2000）记录的有确切结果的EPOS．EPOS-CPFR在最少化方面做的很好，而事实上它就是减少供应链的牛鞭效应．但是，对于EPOS- no CPFR,要支付更多的库存成本，这主要是由于供应链中有长期的存货．除了使存货成本正常化，消除一个梯队或许多梯队的策略仍优于其他的选择．如以前所报告的（例如，见Wikner et al.，1991），消除一个梯队就消除了一个决策点，并减少了总成本．比EPOS-CPFR的结果更令人惊讶的是VMI的情况为既有最差的存货持有成本又有最坏的牛鞭效应．很明显，在游戏中可以看出，尽管提供了详尽的记录议定书的规定，游戏成员在贯彻落实这一构想时存有问题．4.2 Z变换评价我们再一次使用式1以确定牛鞭因素在I级，因为它为提供了一个封闭表达式，使牛鞭能够通过一个Z变换方法而确定下来（Disney Towill, 2002），对牛鞭效应进行量化的学者有（Chenetal, 2000）．我们用平方脉冲响应方法来确定每一个供应链策略所产生的牛鞭效应的大小．这种方法是由Disney和Towill（2002）创造的．总的来说，常用的供应链模式可归纳如下：除非对具体战略进行模式化是必要的，生产决策具有有序规则 ，它是基于平均需求的总和，目标商品库存和实际库存中的一小部分的差别，以及目标运输库存与实际运输库存的结构之间的一小部分的区别（John，Naim 和Towill，1994年）．这这个结论是适当的．因为Naim和Towill（1995）已表明，这是相等于sterman的（1989）锚定和调整启发式，这个式子能够在玩啤酒游戏中复制人的行为，这是众所周知的．使用Eziel和 Eilon在定序规则里的设置（Disney和Towill，2001年和2002年）可使复杂的数学操控减少．这是正确的，因为Disney和towill（2002）已证明这是一个具有重要的可取的动态特性的一般apiobpcs模式的子集．数学工作也得到了进一步简化，这是通过设置在订货规则里指数预报的平均年龄相等于在两个反馈回路中的逆增益()ti1/减1，并确定了制作/发行的筹备时间相等于两种秩序的时期．这些是为了尽量避免在牛鞭表达式中的极高阶多项式．VMI 的具体情景蓝本是供应商管理其客户的库存水平，并致力确保该存货水平保持在（经共同商定）最低和最高水平之间．尤其是，最低及最高水平不会随时间而改变时．这种情况导致两个梯队的供应链运行起来就像具有一个梯队的供应链，Disney （2001年）．我们可以从Disney （2001）那获得对供应商管理库存及其变种的更多信息（尤其是当最低及最高水平随着时间变化）．我们的研究结果概述于下．有两个基本牛鞭非公开形式：一为传统，缩减，电子购物和VMI 的供应链模式，另一个为EPOS 供应链模式．我们可以从下得出结论，当订货样式逐渐流向了供应链中的传统供应链，牛鞭将普遍增加．不过我们注意到，通过仔细观察，当接近4i T 时，流向供应链牛鞭效应反而会降低．消除一个梯队，很明显可以除掉牛鞭的根源，因为一套秩序变通是根本无法进行的．有效地消除整个销售网络可使工厂订单率像传统的供应链的第一梯队一样迅速有效．虽然是一个“低科技”的ICT ，移除两梯队的策略在概念上是简单易懂的．由于这些战略不要求调度器的新的行为，所以也许可以解释为何它们在啤酒游戏产生了有利的结果．不过，他们也存在严重的缺点，在实际供应链中消除零售商，分销中心和批发商也就意味着消除了和顾客的近距离接触．所以除非顾客已经准备好接受不呢个近距离接触的弊端，（因为他们可能用书籍或电脑来完成），这个策略就不可能使用．在VMI 的供应链中，我们可以使得两个梯队表现的和一个单一的梯队一样．事实上，我们没有理由不能拥有一个四梯队的VMI 策略，并使得四梯队像一个单一的梯队那样行动． 因此VMI 被用来获得良好的动态订货，并提供与顾客接触的机会．这也许可以解释为何该策略经常被发现用在杂货供应链中．然而EPOS 策略与其他的策略相比，具有一个本质上不同的订货结构，所以我们需要一套新的封闭形式．但是我们可以看到，我们可以从EPOS中得到与VMIJ几乎相同的绩效表现．而且EPOS策略可以与顾客近距离接触，因此将具有更广泛的用途．5. 结论我们依据单一产品或者累计产品类型提出结果．这个结果当评估ICT 对多种产品的影响时一样有效．研究表明，有必要采取适当的分类政策，以便于汇总产品到各类以动态行为为基础的市场（Naimetal.，2002）．不同的产品类型可能需要不同的订货政策（Evansetal.，1998）或信息富集策略（Mason-Jones and Towill,1997）．我们采取了两种不同的做法来了解ICT对供应链动力学的影响．该Z 变换分析表明有可能创新型的ICT将超越其它策略．但啤酒游戏结果显示ICT增加了人的决策复杂程度，即使清楚所提供的界定协议，也是很难的．因为有太多的信息和和计算需要管理．啤酒游戏还表明，如果对ICT协议管理不善，会增加库存成本．我们的结论是，虽然啤酒是在一个模拟和简化的环境中进行的，但像真实世界一样，人们需要决定哪些结果是不能被立即预知的．Sterman（1989）就表示，在这样的一个环境中，人们并不善于决策．虽然ICT为提高供应链的透明度提供了机会，但同时也创造了一个更复杂的环境使得当人们确实要加以干预使，决策变得更为困难．在传统的打啤酒模式和实施电子商务纲要之间可能有一个供游戏的人通过的学习曲线．电子商务实施纲要显示如果确实存在着学习曲线，那么就表明在简单的情况下学习曲线能够让参与者更快的进步．还有一种可能性是实施者在实施他们的电子商务战略时雄心勃勃．同时，这是不同于真实世界的．公司往往可能在执行新技术时超过了自己的能力和资源以至于太先进的满足了他们的需要，或者是由于在本质上属于资源密集型而无法执行和操作．由于很难保证每个人都受过适当训练，以应对ICT议定书的规定，有必要设计强有力的ICT系统以尽量减少人类干扰．反过来说，在需要人类的互动时，需要用哪些具体信息资源来做出那些特别的决定，这些要求是显而易见的．同时，在现有技术条件下，ICT系统很难处理例外情况，例如旷工或工厂停产．因此需要适当简化程序来使人机交互简单化，以管理例外情况．附录A在不同的供应链中量化牛鞭使用Z变换方法，如表2所示．原文:Assessing the impact of e-business on supplychaindynamicsAbstractThe Internet and related information and communication technologies (ICT) have recently enabled the cost-effective dissemination of information between disparate parties in the supply chain. New supply chain strategies, such as vendor managed inventory (VMI), collaborative planning, forecasting and replenishment (CPFR) and efficient consumer response (ECR), have begun to exploit these new communication channels, principally at the retail end of the supply chain. The impact of the e-business enabled supply chain on manufacturers and materials/component suppliers is,however, less well understood and exploited. This paper is aimed at establishing e-business enabled supply chain models for quantifying the impact of ICT, in particular its effect on dynamic behaviour. The paper concludes that simple, yet robust, models enable considerable quantitative insights into the impact of e-business on supply chain dynamic behaviour prior to their implementation.Keywords Supplychaindynamics；Lommerce；ullwhipZQS；Vendormanage dinventory；Shopping1. IntroductionWhile information and communication technologies (ICT) in the form of e-business is advocated as an enabler to the 1–2–1 enterprise (Peppers andRogers, 1997) by allowing market place information to be shared by all businesses in the supply chain, there is little analytical or quantifiable evidence that it will actually improve the overall performance of the enterprise in delivering customer wants. It is usually proposed that passing information to all businesses in the supply chain via ICT will improve performance. In fact, recent research (Hong-Minh et al., 2000) has shown, via the supply chain ‘‘Beer Game’’ (Sterman, 1989), that simply passing information on to businesses can have a detrimental effect. This is due to the fact that, as well as having more information available, schedulers need to know what to do with it.There are many ways in which innovative information flows could be used within supply chains. Kiely (1998) provides a good starting point, specifically focusing on using demand data for forecasting purposes. In this paper we analyse the impact of four ICT enabled scenarios by investigating the bullwhip effect (Lee et al.,1997a, b) using two different approaches and comparing them to a traditional supply chain. The first approach is based on an analysis of the results of a management flight simulator, the Beer Game. The second approach is based on a quantitative z-transform analysis using the tools highlighted by Disney and Towill (2002). The aim is to compare and contrast the two approaches qualitatively to assess the implications of their evaluations of e-business scenarios on supply chain dynamics.Bullwhip is an important measure, being symptomatic of a poorly performing supply chain (Jones and Simons, 2000). It is a surrogate measure of production adaptation costs (Stalk and Hout, 1990) and implies the inclusion of ‘‘just-in-case’’ stock holding to buffer against uncertainties. There is considerable empirical evidence of bullwhip including recent examples in the: * food sector where the supplier orders two tiers further upstream varied 10 times more than the electronic point of sales (EPOS) data (Jones and Simons, 2000).* automotive sector where the ratio of the variance between incoming orders and order to suppliers at just a single echelon in the supply chain was 1:2 (Naim et al., 2002).The five supply chain strategies considered are:* Traditional—in which there are four ‘‘serially linked’’ echelons in the supply chain.* e-Shopping—where the distribution network is by-passed and information and materials flow directly between the end consumer and the product suppliers.* Reduced—where an echelon in the supply chain had been removed.* Vendor managed inventory (VMI)—that is simulated by developing a protocol positioned between two businesses in the supply chain that gives the necessary inventory and sales information, authority and responsibility to the supplier in order to manage the customer’s inventory.* EPOS—where information from the market place is transmitted to all enterprises in the supply chain.Although various e-business scenarios are available the above were chosen by four groups of four Masters Programme students based on their review of commonly quoted and/or implemented strategies in both the academic and practitioner literature. It was these Masters students who implemented the scenarios in the Beer Game.2. MethodologyResearch on improving the dynamic behaviour of individual manufacturing businesses and supply chains is well known. Most recent research methodologies may be categorised as:* Management games: Tools such as the Beer Game that was developed at MIT at the end of the 1950s (Sterman, 1989), are useful to illustrate the benefitsof different supply chain strategies. Games are limited in the sense that generally nothing can be rigorously proved from the game in itself, but they do provide a valuable source of anecdotal evidence and are a good learning device. Other authors have extended or computerised the Beer Game including van Ackere et al. (1993), Kaminsky and Simchi-Levi (1998), and Lambrecht and Dejonckheere (1999a, b).* Empirical studies: A number of authors have investigated the impact of ICT on the supply chain including Holmstr .om (1998), Fransoo and Wouters (2000), and Kaipia et al. (2000). However, this type of contribution looks at quantifying the improvement performance of a known strategy after its implementation; that is, there is no predictive element and the focus of the research is to identify best practices. Unfortunately, it is not always possible to compare ICT implementation strategies directly due to the varying nature of the environments they have been implemented in.* Statistical: This type of contribution typically provides statistical insights about the impact of demand properties such as standard deviation and correlation, and supply chain properties such as lead-times and information paths on inventory costs and the bullwhip effect orTdemand amplification. Statistical methods are often used to quantify the performance of real situations. These methods however, fail to show how to reduce or eliminate the detrimental dynamic effects, such as ‘‘bullwhip’’, and insights into the causes and effects of system structure on performance are rarely obtained in depth from the technique. Recent significant contributions of this type include Lee et al. (2000) and Chen et al., (2000).* Simulation and system dynamics: This approach was advocated by Forrester (1961) as a method of investigating the dynamical effects in large non-linear systems without resorting to complicated mathematical control theory based models (Edghill and Towill, 1989). Simulation approaches alone suffer。
农业电子商务外文翻译文献(文档含中英文对照即英文原文和中文翻译)农业产业化：从农场到交易市场摘要农业产业化就是农业以市场需求为导向，有效的满足客户以及市场要求的一系列的链条。
这种变革需要一个更广泛的概念化和更准确的定义，传达一个致力于创造价值和可持续利用食物，纤维，可再生资源的更有活力，系统性，综合性和纪律性的系统。
我们讨论的力量，推动这一转移到市场，提供了新的和更具有代表性农业产业化的定义，提供模型以说明一些最引人注目的趋势，并阐明这些模型关键因素和影响。
关键词：农业产业化的定义，概念模型，市场为中心，市场体系1 绪论农业产业化在1955年开始作为一个独特的研究领域，当时约翰.戴维斯将它定义为：农业产业化是以农场生产为中心，然后商品化。
这个定义当时是最适当的，那是农业行动的重点是最大限度地生产食物和纤维。
戴维斯和高德博格用新鲜的见解，将农业产业化定义为:制造和分销农场用品：在该农场生产经营、储存、加工、分销所有的农产品的商品和物品所涉及的所有业务的总和。
类似的定义也有其他的人提出，如唐尼和埃里克森：农业产业化，包括所有这些业务和管理活动由公司提供投入到农业部门，生产农产品，运输，金融，处理农产品的全部过程。
这些传统的定义，随着时间的推移，对农场或生产的单位所反映农业产业化的焦点，如农业交易中心已数十年之久。
今天，一个就业散点图显示，虽然超过百分之三十的就业机会农业产业化提供的，少于百分之一的人直接参与农场生产。
农业产业化已不再是以农场为中心。
二十一世纪农业产业化包含了更广泛的一系列行动，主要是外围行动，包括以市场为导向的可持续利用食物，纤维，和可再生资源。
2 农业产业化的发展2.1货车司机的分界线几个因素推动了农业产业化的界限的划分，从主要农产品为本，努力生产更多的顾客和市场为中心的商品。
今天，成功的农业企业通常是更集中于：●系统性的价值链和每家公司的或企业的定位，贡献这些链;●多方利益相关者的日益弥漫性和复杂的农业产业化价值链;●自然稀少的资源和他们的审慎管理;●新的技术和适当的专利申请;●全球化，包括所产生无数的机会和的威胁;●可持续差别优势，或更确切地说，来源和营养例如：品牌和品牌资产在竞争日益激烈和活跃的农业产业化世界大市场。
中英文资料翻译EDA技术及软件EDA是电子设计自动化(Electronic Design Automation)的缩写,在20世纪90年代初从计算机辅助设计(CAD)、计算机辅助制造(CAM)、计算机辅助测试(CAT)和计算机辅助工程(CAE)的概念发展而来。
EDA技术就是以计算机为工具，设计者在EDA软件平台上，用硬件描述语言HDL完成设计文件，然后由计算机自动地完成逻辑编译、化简、分割、综合、优化、布局、布线和仿真，直至对于特定目标芯片的适配编译、逻辑映射和编程下载等工作。
1 EDA技术的概念EDA技术是在电子CAD技术基础上发展起来的计算机软件系统，是指以计算机为工作平台，融合了应用电子技术、计算机技术、信息处理及智能化技术的最新成果，进行电子产品的自动设计。
利用EDA工具，电子设计师可以从概念、算法、协议等开始设计电子系统，大量工作可以通过计算机完成，并可以将电子产品从电路设计、性能分析到设计出IC版图或PCB版图的整个过程的计算机上自动处理完成。
现在对EDA的概念或范畴用得很宽。
包括在机械、电子、通信、航空航天、化工、矿产、生物、医学、军事等各个领域，都有EDA的应用。
目前EDA技术已在各大公司、企事业单位和科研教学部门广泛使用。
例如在飞机制造过程中，从设计、性能测试及特性分析直到飞行模拟，都可能涉及到EDA 技术。
本文所指的EDA技术，主要针对电子电路设计、PCB设计和IC设计。
EDA设计可分为系统级、电路级和物理实现级。
2 EDA常用软件EDA工具层出不穷，目前进入我国并具有广泛影响的EDA软件有：multiSIM7（原EWB的最新版本）、PSPICE、OrCAD、PCAD、Protel、Viewlogic、Mentor、Graphics、Synopsys、LSIIogic、Cadence、MicroSim等等。
这些工具都有较强的功能，一般可用于几个方面，例如很多软件都可以进行电路设计与仿真，同进还可以进行PCB自动布局布线，可输出多种网表文件与第三方软件接口。
AC(alternating current) 交流(电)A／D(analog to digital) 模拟／数字转换ADC(analog to digital convertor) 模拟／数字转换器ADM(adaptive delta modulation) 自适应增量调制ADPCM(adaptive differential pulse code modulation) 自适应差分脉冲编码调制ALU(arithmetic logic unit) 算术逻辑单元ASCII(American standard code for informationinterchange) 美国信息交换标准码A V(audio visual) 声视，视听BCD(binary coded decimal) 二进制编码的十进制数BCR(bi-directional controlled rectifier)双向晶闸管BCR(buffer courtier reset) 缓冲计数器BZ(buzzer) 蜂鸣器，蜂音器C(capacitance，capacitor) 电容量，电容器CATV(cable television) 电缆电视CCD(charge-coupled device) 电荷耦合器件CCTV(closed-circuit television) 闭路电视CMOS(complementary) 互补MOSCPU(central processing unit)**处理单元CS(control signal) 控制信号D(diode) 二极管DAST(direct analog store technology) 直接模拟存储技术DC(direct current) 直流DIP(dual in-line package) 双列直插封装DP(dial pulse) 拨号脉冲DRAM(dynamic random access memory) 动态随机存储器DTL(diode-transistor logic) 二极管晶体管逻辑DUT(device under test) 被测器件DVM(digital voltmeter) 数字电压表ECG(electrocardiograph) 心电图ECL(emitter coupled logic) 射极耦合逻辑EDI(electronic data interchange) 电子/download/EPROMshuju/' target='_blank' class='infotextkey'>数据交换EIA(Electronic Industries Association) 电子工业联合会EOC(end of conversion) 转换结束EPROM(erasable programmable read only memory) 可擦可编程只读存储器EEPROM(electrically EPROM) 电可擦可编程只读存储器ESD(electro-static discharge) 静电放电FET(field-effect transistor) 场效应晶体管FS(full scale) 满量程F／V(frequency to voltage convertor) 频率／电压转换FM(frequency modulation) 调频FSK(frequency shift keying) 频移键控FSM(field strength meter) 场强计FST(fast switching shyster) 快速晶闸管FT(fixed time) 固定时间FU(fuse unit) 保险丝装置FWD(forward) 正向的GAL(generic array logic) 通用阵列逻辑GND(ground) 接地，地线GTO(Sate turn off thruster) 门极可关断晶体管HART(highway addressable remote transducer) 可寻址远程传感器/download/EPROMshuju/' target='_blank' class='infotextkey'>数据公路HCMOS(high density COMS) 高密度互补金属氧化物半导体(器件)HF(high frequency) 高频HTL(high threshold logic) 高阈值逻辑电路HTS(heat temperature sensor) 热温度传感器IC(integrated circuit) 集成电路ID(international data) 国际/download/EPROMshuju/' target='_blank' class='infotextkey'>数据IGBT(insulated gate bipolar transistor) 绝缘栅双极型晶体管IGFET(insulated gate field effect transistor) 绝缘栅场效应晶体管I／O(input／output) 输入／输出I／V(current to voltage convertor) 电流-电压变换器IPM(incidental phase modulation) 附带的相位调制IPM(intelligent power module) 智能功率模块IR(infrared radiation) 红外辐射IRQ(interrupt request) 中断请求JFET(junction field effect transistor) 结型场效应晶体管LAS(light activated switch)光敏开关LASCS(light activated silicon controlled switch) 光控可控硅开关LCD(liquid crystal display) 液晶显示器LDR(light dependent resistor) 光敏电阻LED(light emitting diode) 发光二极管LRC(longitudinal redundancy check) 纵向冗余(码)校验LSB(least significant bit) 最低有效位LSI(1arge scale integration) 大规模集成电路M(motor) 电动机MCT(MOS controlled gyrator) 场控晶闸管MIC(microphone) 话筒，微音器，麦克风min(minute) 分MOS(metal oxide semiconductor)金属氧化物半导体MOSFET(metal oxide semiconductor FET) 金属氧化物半导体场效应晶体管N(negative) 负NMOS(N-channel metal oxide semiconductor FET) N沟道MOSFETNTC(negative temperature coefficient) 负温度系数OC(over current) 过电流OCB(overload circuit breaker) 过载断路器OCS(optical communication system) 光通讯系统OR(type of logic circuit) 或逻辑电路OV(over voltage) 过电压P(pressure) 压力FAM(pulse amplitude modulation) 脉冲幅度调制PC(pulse code) 脉冲码PCM(pulse code modulation) 脉冲编码调制PDM(pulse duration modulation) 脉冲宽度调制PF(power factor) 功率因数PFM(pulse frequency modulation) 脉冲频率调制PG(pulse generator) 脉冲发生器PGM(programmable) 编程信号PI(proportional-integral(controller)) 比例积分(控制器)PID(proportional-integral-differential(controller))比例积分微分(控制器)PIN(positive intrinsic-negative) 光电二极管PIO(parallel input output) 并行输入输出PLD(phase-locked detector) 同相检波PLD(phase-locked discriminator) 锁相解调器PLL(phase-locked loop) 锁相环路PMOS(P-channel metal oxide semiconductor FET) P沟道MOSFETP-P(peak-to-peak) 峰--峰PPM(pulse phase modulation) 脉冲相位洲制PRD(piezoelectric radiation detector) 热电辐射控测器PROM(programmable read only memory) 可编只读程存储器PRT(platinum resistance thermometer) 铂电阻温度计PRT(pulse recurrent time) 脉冲周期时间PUT(programmable unijunction transistor) 可编程单结晶体管PWM(pulse width modulation) 脉宽调制R(resistance，resistor) 电阻，电阻器RAM(random access memory) 随机存储器RCT(reverse conducting thyristor) 逆导晶闸管REF(reference) 参考，基准REV(reverse) 反转R/F(radio frequency) 射频RGB(red／green／blue) 红绿蓝ROM(read only memory) 只读存储器RP(resistance potentiometer) 电位器RST(reset) 复位信号RT(resistor with inherent variability dependent) 热敏电阻RTD(resistance temperature detector) 电阻温度传感器RTL(resistor transistor logic) 电阻晶体管逻辑(电路)RV(resistor with inherent variability dependent on the voltage) 压敏电阻器SA(switching assembly) 开关组件SBS(silicon bi-directional switch) 硅双向开关，双向硅开关SCR(silicon controlled rectifier) 可控硅整流器SCS(safety control switch) 安全控制开关SCS(silicon controlled switch) 可控硅开关SCS(speed control system) 速度控制系统SCS(supply control system) 电源控制系统SG(spark gap) 放电器)SIT(static induction transformer) 静电感应晶体管SITH(static induction thyristor) 静电感应晶闸管SP(shift pulse) 移位脉冲SPI(serial peripheral interface) 串行外围接口SR(sample realy，saturable reactor) 取样继电器，饱和电抗器SR(silicon rectifier) 硅整流器SRAM(static random access memory) 静态随机存储器SSR(solid-state relay) 固体继电器SSR(switching select repeater) 中断器开关选择器SSS(silicon symmetrical switch) 硅对称开关，双向可控硅SSW(synchro-switch) 同步开关ST(start) 启动ST(starter) 启动器STB(strobe) 闸门，选通脉冲T(transistor) 晶体管，晶闸管TACH(tachometer) 转速计，转速表TP(temperature probe) 温度传感器TRIAC(triodes AC switch) 三极管交流开关TTL(transistor-transistor logic) 晶体管一晶体管逻辑TV(television) 电视UART(universal asynchronous receiver transmitter) 通用异步收发器VCO(voltage controlled oscillator) 压控振荡器VD(video decoders) /movie/' target='_blank' class='infotextkey'>视频译码器VDR(voltage dependent resistor) 压敏电阻VF(video frequency) /movie/' target='_blank' class='infotextkey'>视频V／F(voltage-to-frequency) 电压／频率转换V／I(voltage to current convertor) 电压-电流变换器VM(voltmeter) 电压表VS(vacuum switch) 电子开关VT(visual telephone) 电视电话VT(video terminal) /movie/' target='_blank' class='infotextkey'>视频终端AC(alternating current) 交流(电)A／D(analog to digital) 模拟／数字转换ADC(analog to digital convertor) 模拟／数字转换器ADM(adaptive delta modulation) 自适应增量调制ADPCM(adaptive differential pulse code modulation) 自适应差分脉冲编码调制ALU(arithmetic logic unit) 算术逻辑单元ASCII(American standard code for informationinterchange) 美国信息交换标准码A V(audio visual) 声视，视听BCD(binary coded decimal) 二进制编码的十进制数BCR(bi-directional controlled rectifier)双向晶闸管BCR(buffer courtier reset) 缓冲计数器BZ(buzzer) 蜂鸣器，蜂音器C(capacitance，capacitor) 电容量，电容器CATV(cable television) 电缆电视CCD(charge-coupled device) 电荷耦合器件CCTV(closed-circuit television) 闭路电视CMOS(complementary) 互补MOSCPU(central processing unit)**处理单元CS(control signal) 控制信号D(diode) 二极管DAST(direct analog store technology) 直接模拟存储技术DC(direct current) 直流DIP(dual in-line package) 双列直插封装DP(dial pulse) 拨号脉冲DRAM(dynamic random access memory) 动态随机存储器DTL(diode-transistor logic) 二极管晶体管逻辑DUT(device under test) 被测器件DVM(digital voltmeter) 数字电压表ECG(electrocardiograph) 心电图ECL(emitter coupled logic) 射极耦合逻辑EDI(electronic data interchange) 电子/download/EPROMshuju/' target='_blank' class='infotextkey'>数据交换EIA(Electronic Industries Association) 电子工业联合会EOC(end of conversion) 转换结束EPROM(erasable programmable read only memory) 可擦可编程只读存储器EEPROM(electrically EPROM) 电可擦可编程只读存储器ESD(electro-static discharge) 静电放电FET(field-effect transistor) 场效应晶体管FS(full scale) 满量程F／V(frequency to voltage convertor) 频率／电压转换FM(frequency modulation) 调频FSK(frequency shift keying) 频移键控FSM(field strength meter) 场强计FST(fast switching shyster) 快速晶闸管FT(fixed time) 固定时间FU(fuse unit) 保险丝装置FWD(forward) 正向的GAL(generic array logic) 通用阵列逻辑GND(ground) 接地，地线GTO(Sate turn off thruster) 门极可关断晶体管HART(highway addressable remote transducer) 可寻址远程传感器/download/EPROMshuju/' target='_blank' class='infotextkey'>数据公路HCMOS(high density COMS) 高密度互补金属氧化物半导体(器件)HF(high frequency) 高频HTL(high threshold logic) 高阈值逻辑电路HTS(heat temperature sensor) 热温度传感器IC(integrated circuit) 集成电路ID(international data) 国际/download/EPROMshuju/' target='_blank' class='infotextkey'>数据IGBT(insulated gate bipolar transistor) 绝缘栅双极型晶体管IGFET(insulated gate field effect transistor) 绝缘栅场效应晶体管I／O(input／output) 输入／输出I／V(current to voltage convertor) 电流-电压变换器IPM(incidental phase modulation) 附带的相位调制IPM(intelligent power module) 智能功率模块IR(infrared radiation) 红外辐射IRQ(interrupt request) 中断请求JFET(junction field effect transistor) 结型场效应晶体管LAS(light activated switch)光敏开关LASCS(light activated silicon controlled switch) 光控可控硅开关LCD(liquid crystal display) 液晶显示器LDR(light dependent resistor) 光敏电阻LED(light emitting diode) 发光二极管LRC(longitudinal redundancy check) 纵向冗余(码)校验LSB(least significant bit) 最低有效位LSI(1arge scale integration) 大规模集成电路M(motor) 电动机MCT(MOS controlled gyrator) 场控晶闸管MIC(microphone) 话筒，微音器，麦克风min(minute) 分MOS(metal oxide semiconductor)金属氧化物半导体MOSFET(metal oxide semiconductor FET) 金属氧化物半导体场效应晶体管N(negative) 负NMOS(N-channel metal oxide semiconductor FET) N沟道MOSFETNTC(negative temperature coefficient) 负温度系数OC(over current) 过电流OCB(overload circuit breaker) 过载断路器OCS(optical communication system) 光通讯系统OR(type of logic circuit) 或逻辑电路OV(over voltage) 过电压P(pressure) 压力FAM(pulse amplitude modulation) 脉冲幅度调制PC(pulse code) 脉冲码PCM(pulse code modulation) 脉冲编码调制PDM(pulse duration modulation) 脉冲宽度调制PF(power factor) 功率因数PFM(pulse frequency modulation) 脉冲频率调制PG(pulse generator) 脉冲发生器PGM(programmable) 编程信号PI(proportional-integral(controller)) 比例积分(控制器)PID(proportional-integral-differential(controller))比例积分微分(控制器)PIN(positive intrinsic-negative) 光电二极管PIO(parallel input output) 并行输入输出PLD(phase-locked detector) 同相检波PLD(phase-locked discriminator) 锁相解调器PLL(phase-locked loop) 锁相环路PMOS(P-channel metal oxide semiconductor FET) P沟道MOSFETP-P(peak-to-peak) 峰--峰PPM(pulse phase modulation) 脉冲相位洲制PRD(piezoelectric radiation detector) 热电辐射控测器PROM(programmable read only memory) 可编只读程存储器PRT(platinum resistance thermometer) 铂电阻温度计PRT(pulse recurrent time) 脉冲周期时间PUT(programmable unijunction transistor) 可编程单结晶体管PWM(pulse width modulation) 脉宽调制R(resistance，resistor) 电阻，电阻器RAM(random access memory) 随机存储器RCT(reverse conducting thyristor) 逆导晶闸管REF(reference) 参考，基准REV(reverse) 反转R/F(radio frequency) 射频RGB(red／green／blue) 红绿蓝ROM(read only memory) 只读存储器RP(resistance potentiometer) 电位器RST(reset) 复位信号RT(resistor with inherent variability dependent) 热敏电阻RTD(resistance temperature detector) 电阻温度传感器RTL(resistor transistor logic) 电阻晶体管逻辑(电路)RV(resistor with inherent variability dependent on the voltage) 压敏电阻器SA(switching assembly) 开关组件SBS(silicon bi-directional switch) 硅双向开关，双向硅开关SCR(silicon controlled rectifier) 可控硅整流器SCS(safety control switch) 安全控制开关SCS(silicon controlled switch) 可控硅开关SCS(speed control system) 速度控制系统SCS(supply control system) 电源控制系统SG(spark gap) 放电器SIT(static induction transformer) 静电感应晶体管SITH(static induction thyristor) 静电感应晶闸管SP(shift pulse) 移位脉冲SPI(serial peripheral interface) 串行外围接口SR(sample realy，saturable reactor) 取样继电器，饱和电抗器SR(silicon rectifier) 硅整流器SRAM(static random access memory) 静态随机存储器SSR(solid-state relay) 固体继电器SSR(switching select repeater) 中断器开关选择器SSS(silicon symmetrical switch) 硅对称开关，双向可控硅SSW(synchro-switch) 同步开关ST(start) 启动ST(starter) 启动器STB(strobe) 闸门，选通脉冲T(transistor) 晶体管，晶闸管TACH(tachometer) 转速计，转速表TP(temperature probe) 温度传感器TRIAC(triodes AC switch) 三极管交流开关TTL(transistor-transistor logic) 晶体管一晶体管逻辑TV(television) 电视UART(universal asynchronous receiver transmitter) 通用异步收发器VCO(voltage controlled oscillator) 压控振荡器VD(video decoders) /movie/' target='_blank' class='infotextkey'>视频译码器VDR(voltage dependent resistor) 压敏电阻VF(video frequency) /movie/' target='_blank' class='infotextkey'>视频V／F(voltage-to-frequency) 电压／频率转换V／I(voltage to current convertor) 电压-电流变换器VM(voltmeter) 电压表VS(vacuum switch) 电子开关VT(visual telephone) 电视电话VT(video terminal) /movie/' target='_blank' class='infotextkey'>视频终端。
SCM is an integrated circuit chip，is the use of large scale integrated circuit technology to a data processing capability of CPU CPU random access memory RAM，read—only memory ROM，a variety of I / O port and interrupt system, timers / timer functions (which may also include display driver circuitry，pulse width modulation circuit，analog multiplexer, A / D converter circuit) integrated into a silicon constitute a small and complete computer systems。
SCM is also known as micro—controller （Microcontroller)，because it is the first to be used in industrial control. Only a single chip by the CPU chip developed from a dedicated processor。
The first design is by a large number of peripherals and CPU on a chip in the computer system，smaller, more easily integrated into a complex and demanding on the volume control device which. The Z80 INTEL is the first designed in accordance with this idea processor, then on the development of microcontroller and dedicated processors will be parting ways。
外文翻译原文：Progress in ComputersThe first stored program computers began to work around 1950. The one we built in Cambridge, the EDSAC was first used in the summer of 1949.These early experimental computers were built by people like myself with varying backgrounds. We all had extensive experience in electronic engineering and were confident that that experience would stand us in good stead. This proved true, although we had some new things to learn. The most important of these was that transients must be treated correctly; what would cause a harmless flash on the screen of a television set could lead to a serious error in a computer.As far as computing circuits were concerned, we found ourselves with an embarass de richess. For example, we could use vacuum tube diodes for gates as we did in the EDSAC or pentodes with control signals on both grids, a system widely used elsewhere. This sort of choice persisted and the term families of logic came into use. Those who have worked in the computer field will remember TTL, ECL and CMOS. Of these, CMOS has now become dominant.In those early years, the IEE was still dominated by power engineering and we had to fight a number of major battles in order to get radio engineering along with the rapidly developing subject of electronics.dubbed in the IEE light current electrical engineering.properly recognised as an activity in its own right. I remember that we had some difficulty in organising a conference because the power engineers’ ways of doing things were not our ways. A minor source of irritation was that all IEE published papers were expected to start with a lengthy statement of earlier practice, something difficult to do when there was no earlier practice Consolidation in the 1960sBy the late 50s or early 1960s, the heroic pioneering stage was over and the computer field was starting up in real earnest. The number of computers in the worldhad increased and they were much more reliable than the very early ones . To those years we can ascribe the first steps in high level languages and the first operating systems. Experimental time-sharing was beginning, and ultimately computer graphics was to come along.Above all, transistors began to replace vacuum tubes. This change presented a formidable challenge to the engineers of the day. They had to forget what they knew about circuits and start again. It can only be said that they measured up superbly well to the challenge and that the change could not have gone more smoothly.Soon it was found possible to put more than one transistor on the same bit of silicon, and this was the beginning of integrated circuits. As time went on, a sufficient level of integration was reached for one chip to accommodate enough transistors for a small number of gates or flip flops. This led to a range of chips known as the 7400 series. The gates and flip flops were independent of one another and each had its own pins. They could be connected by off-chip wiring to make a computer or anything else.These chips made a new kind of computer possible. It was called a minicomputer. It was something less that a mainframe, but still very powerful, and much more affordable. Instead of having one expensive mainframe for the whole organisation, a business or a university was able to have a minicomputer for each major department.Before long minicomputers began to spread and become more powerful. The world was hungry for computing power and it had been very frustrating for industry not to be able to supply it on the scale required and at a reasonable cost. Minicomputers transformed the situation.The fall in the cost of computing did not start with the minicomputer; it had always been that way. This was what I meant when I referred in my abstract to inflation in the computer industry ‘going the other way’. As time goes on people get more for their money, not less.Research in Computer Hardware.The time that I am describing was a wonderful one for research in computer hardware. The user of the 7400 series could work at the gate and flip-flop level and yet the overall level of integration was sufficient to give a degree of reliability far above that of discreet transistors. The researcher, in a university or elsewhere, could build any digital device that a fertile imagination could conjure up. In the Computer Laboratory we built the Cambridge CAP, a full-scale minicomputerwith fancy capability logic.The 7400 series was still going strong in the mid 1970s and was used for the Cambridge Ring, a pioneering wide-band local area network. Publication of the design study for the Ring came just before the announcement of the Ethernet. Until these two systems appeared, users had mostly been content with teletype-based local area networks.Rings need high reliability because, as the pulses go repeatedly round the ring, they must be continually amplified and regenerated. It was the high reliability provided by the 7400 series of chips that gave us the courage needed to embark on the project for the Cambridge Ring.The RISC Movement and Its AftermathEarly computers had simple instruction sets. As time went on designers of commercially available machines added additional features which they thought would improve performance. Few comparative measurements were done and on the whole the choice of features depended upo n the designer’s intuition.In 1980, the RISC movement that was to change all this broke on the world. The movement opened with a paper by Patterson and Ditzel entitled The Case for the Reduced Instructions Set Computer.Apart from leading to a striking acronym, this title conveys little of the insights into instruction set design which went with the RISC movement, in particular the way it facilitated pipelining, a system whereby several instructions may be in different stages of execution within the processor at the same time. Pipelining was not new, but it was new for small computersThe RISC movement benefited greatly from methods which had recently become available for estimating the performance to be expected from a computer design without actually implementing it. I refer to the use of a powerful existing computer to simulate the new design. By the use of simulation, RISC advocates were able to predict with some confidence that a good RISC design would be able to out-perform the best conventional computers using the same circuit technology. This prediction was ultimately born out in practice.Simulation made rapid progress and soon came into universal use by computer designers. In consequence, computer design has become more of a science and less of an art. Today, designers expect to have a roomful of, computers available to do their simulations, not just one. They refer to such a roomful by the attractive nameof computer farm.The x86 Instruction SetLittle is now heard of pre-RISC instruction sets with one major exception, namely that of the Intel 8086 and its progeny, collectively referred to as x86. This has become the dominant instruction set and the RISC instruction sets that originally had a considerable measure of success are having to put up a hard fight for survival.This dominance of x86 disappoints people like myself who come from the research wings.both academic and industrial.of the computer field. No doubt, business considerations have a lot to do with the survival of x86, but there are other reasons as well. However much we research oriented people would like to think otherwise. high level languages have not yet eliminated the use of machine code altogether. We need to keep reminding ourselves that there is much to be said for strict binary compatibility with previous usage when that can be attained. Nevertheless, things might have been different if Intel’s major attempt to produce a good RISC chip had been more successful. I am referring to the i860 (not the i960, which was something different). In many ways the i860 was an excellent chip, but its software interface did not fit it to be used in a workstation.There is an interesting sting in the tail of this apparently easy triumph of the x86 instruction set. It proved impossible to match the steadily increasing speed of RISC processors by direct implementation of the x86 instruction set as had been done in the past. Instead, designers took a leaf out of the RISC book; although it is not obvious, on the surface, a modern x86 processor chip contains hidden within it a RISC-style processor with its own internal RISC coding. The incoming x86 code is, after suitable massaging, converted into this internal code and handed over to the RISC processor where the critical execution is performed.In this summing up of the RISC movement, I rely heavily on the latest edition of Hennessy and Patterson’s books on computer design as my supporting authority; see in particular Computer Architecture, third edition, 2003, pp 146, 151-4, 157-8.The IA-64 instruction set.Some time ago, Intel and Hewlett-Packard introduced the IA-64 instruction set. This was primarily intended to meet a generally recognised need for a 64 bit address space. In this, it followed the lead of the designers of the MIPS R4000 and Alpha. However one would have thought that Intel would have stressed compatibility with the x86; the puzzle is that they did the exact opposite.Moreover, built into the design of IA-64 is a feature known as predication which makes it incompatible in a major way with all other instruction sets. In particular, it needs 6 extra bits with each instruction. This upsets the traditional balance between instruction word length and information content, and it changes significantly the brief of the compiler writer.In spite of having an entirely new instruction set, Intel made the puzzling claim that chips based on IA-64 would be compatible with earlier x86 chips. It was hard to see exactly what was meant.Chips for the latest IA-64 processor, namely, the Itanium, appear to have special hardware for compatibility. Even so, x86 code runs very slowly.Because of the above complications, implementation of IA-64 requires a larger chip than is required for more conventional instruction sets. This in turn implies a higher cost. Such at any rate, is the received wisdom, and, as a general principle, it was repeated as such by Gordon Moore when he visited Cambridge recently to open the Betty and Gordon Moore Library. I have, however, heard it said that the matter appears differently from within Intel. This I do not understand. But I am very ready to admit that I am completely out of my depth as regards the economics of the semiconductor industry.AMD have defined a 64 bit instruction set that is more compatible with x86 and they appear to be making headway with it. The chip is not a particularly large one. Some people think that this is what Intel should have done. [Since the lecture was delivered, Intel have announced that they will market a range of chips essentially compatible with those offered by AMD.]The Relentless Drive towards Smaller TransistorsThe scale of integration continued to increase. This was achieved by shrinking the original transistors so that more could be put on a chip. Moreover, the laws of physics were on the side of the manufacturers. The transistors also got faster, simply by getting smaller. It was therefore possible to have, at the same time, both high density and high speed.There was a further advantage. Chips are made on discs of silicon, known as wafers. Each wafer has on it a large number of individual chips, which are processed together and later separated. Since shrinkage makes it possible to get more chips on a wafer, the cost per chip goes down.Falling unit cost was important to the industry because, if the latest chipsare cheaper to make as well as faster, there is no reason to go on offering the old ones, at least not indefinitely. There can thus be one product for the entire market.However, detailed cost calculations showed that, in order to maintain this advantage as shrinkage proceeded beyond a certain point, it would be necessary to move to larger wafers. The increase in the size of wafers was no small matter. Originally, wafers were one or two inches in diameter, and by 2000 they were as much as twelve inches. At first, it puzzled me that, when shrinkage presented so many other problems, the industry should make things harder for itself by going to larger wafers. I now see that reducing unit cost was just as important to the industry as increasing the number of transistors on a chip, and that this justified the additional investment in foundries and the increased risk.The degree of integration is measured by the feature size, which, for a given technology, is best defined as the half the distance between wires in the densest chips made in that technology. At the present time, production of 90 nm chips is still building upSuspension of LawIn March 1997, Gordon Moore was a guest speaker at the celebrations of the centenary of the discovery of the electron held at the Cavendish Laboratory. It was during the course of his lecture that I first heard the fact that you can have silicon chips that are both fast and low in cost described as a violation of Murphy’s law.or Sod’s law as it is usually called in the UK. Moore said that experience in other fields would lead you to expect to have to choose between speed and cost, or to compromise between them. In fact, in the case of silicon chips, it is possible to have both.In a reference book available on the web, Murphy is identified as an engineer working on human acceleration tests for the US Air Force in 1949. However, we were perfectly familiar with the law in my student days, when we called it by a much more prosaic name than either of those mentioned above, namely, the Law of General Cussedness. We even had a mock examination question in which the law featured. It was the type of question in which the first part asks for a definition of some law or principle and the second part contains a problem to be solved with the aid of it. In our case the first part was to define the Law of General Cussedness and the second was the problem;A cyclist sets out on a circular cycling tour. Derive an equation giving the direction of the wind at any time.The single-chip computerAt each shrinkage the number of chips was reduced and there were fewer wires going from one chip to another. This led to an additional increment in overall speed, since the transmission of signals from one chip to another takes a long time.Eventually, shrinkage proceeded to the point at which the whole processor except for the caches could be put on one chip. This enabled a workstation to be built that out-performed the fastest minicomputer of the day, and the result was to kill the minicomputer stone dead. As we all know, this had severe consequences for the computer industry and for the people working in it.From the above time the high density CMOS silicon chip was Cock of the Roost. Shrinkage went on until millions of transistors could be put on a single chip and the speed went up in proportion.Processor designers began to experiment with new architectural features designed to give extra speed. One very successful experiment concerned methods for predicting the way program branches would go. It was a surprise to me how successful this was. It led to a significant speeding up of program execution and other forms of prediction followedEqually surprising is what it has been found possible to put on a single chip computer by way of advanced features. For example, features that had been developed for the IBM Model 91.the giant computer at the top of the System 360 range.are now to be found on microcomputersMurphy’s Law remained in a state of suspension. No longer did it make se nse to build experimental computers out of chips with a small scale of integration, such as that provided by the 7400 series. People who wanted to do hardware research at the circuit level had no option but to design chips and seek for ways to get them made. For a time, this was possible, if not easyUnfortunately, there has since been a dramatic increase in the cost of making chips, mainly because of the increased cost of making masks for lithography, a photographic process used in the manufacture of chips. It has, in consequence, again become very difficult to finance the making of research chips, and this is a currently cause for some concern.The Semiconductor Road MapThe extensive research and development work underlying the above advances has been made possible by a remarkable cooperative effort on the part of the。
