信息系统外文文献及译文

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毕业论文英文参考文献与译文

Inventory managementInventory ControlOn the so-called "inventory control", many people will interpret it as a "storage management", which is actually a big distortion.The traditional narrow view, mainly for warehouse inventory control of materials for inventory, data processing, storage, distribution, etc., through the implementation of anti-corrosion, temperature and humidity control means, to make the custody of the physical inventory to maintain optimum purposes. This is just a form of inventory control, or can be defined as the physical inventory control. How, then, from a broad perspective to understand inventory control? Inventory control should be related to the company's financial and operational objectives, in particular operating cash flow by optimizing the entire demand and supply chain management processes (DSCM), a reasonable set of ERP control strategy, and supported by appropriate information processing tools, tools to achieved in ensuring the timely delivery of the premise, as far as possible to reduce inventory levels, reducing inventory and obsolescence, the risk of devaluation. In this sense, the physical inventory control to achieve financial goals is just a means to control the entire inventory or just a necessary part; from the perspective of organizational functions, physical inventory control, warehouse management is mainly the responsibility of The broad inventory control is the demand and supply chain management, and the whole company's responsibility.Why until now many people's understanding of inventory control, limited physical inventory control? The following two reasons can not be ignored:First, our enterprises do not attach importance to inventory control. Especially those who benefit relatively good business, as long as there is money on the few people to consider the problem of inventory turnover. Inventory control is simply interpreted as warehouse management, unless the time to spend money, it may have been to see the inventory problem, and see the results are often very simple procurement to buy more, or did not do warehouse departments .Second, ERP misleading. Invoicing software is simple audacity to call it ERP, companies on their so-called ERP can reduce the number of inventory, inventory control, seems to rely on their small software can get. Even as SAP, BAAN ERP world, the field ofthese big boys, but also their simple modules inside the warehouse management functionality is defined as "inventory management" or "inventory control." This makes the already not quite understand what our inventory control, but not sure what is inventory control.In fact, from the perspective of broadly understood, inventory control, shouldinclude the following:First, the fundamental purpose of inventory control. We know that the so-called world-class manufacturing, two key assessment indicators (KPI) is, customer satisfaction and inventory turns, inventory turns and this is actually the fundamental objective of inventory control.Second, inventory control means. Increase inventory turns, relying solely on the so-called physical inventory control is not enough, it should be the demand and supply chain management process flow of this large output, and this big warehouse management processes in addition to including this link, the more important The section also includes: forecasting and order processing, production planning and control, materials planning and purchasing control, inventory planning and forecasting in itself, as well as finished products, raw materials, distribution and delivery of the strategy, and even customs management processes.And with the demand and supply chain management processes throughout the process, it is the information flow and capital flow management. In other words, inventory itself is across the entire demand and supply management processes in all aspects of inventory control in order to achieve the fundamental purpose, it must control all aspects of inventory, rather than just manage the physical inventory at hand.Third, inventory control, organizational structure and assessment.Since inventory control is the demand and supply chain management processes, output, inventory control to achieve the fundamental purpose of this process must be compatible with a rational organizational structure. Until now, we can see that many companies have only one purchasing department, purchasing department following pipe warehouse. This is far short of inventory control requirements. From the demand and supply chain management process analysis, we know that purchasing and warehouse management is the executive arm of the typical, and inventory control should focus on prevention, the executive branch is very difficult to "prevent inventory" for the simple reason that they assessment indicatorsin large part to ensure supply (production, customer). How the actual situation, a reasonable demand and supply chain management processes, and thus set the corresponding rational organizational structure and is a question many of our enterprisesto exploreThe role of inventory controlInventory management is an important part of business management. In the production and operation activities, inventory management must ensure that both the production plant for raw materials, spare parts demand, but also directly affect the purchasing, sales of share, sales activities. To make an inventory of corporate liquidity, accelerate cash flow, the security of supply under the premise of minimizing Yaku funds, directly affects the operational efficiency. Ensure the production and operation needs of the premise, so keep inventories at a reasonable level; dynamic inventory control, timely, appropriate proposed order to avoid over storage or out of stock; reduce inventory footprint, lower total cost of inventory; control stock funds used to accelerate cash flow.Problems arising from excessive inventory: increased warehouse space andinventory storage costs, thereby increasing product costs; take a lot of liquidity, resultingin sluggish capital, not only increased the burden of payment of interest, etc., would affect the time value of money and opportunity income; finished products and raw materials caused by physical loss and intangible losses; a large number of enterprise resource idle, affecting their rational allocation and optimization; cover the production, operation of the whole process of the various contradictions and problems, is not conducive to improve the management level.Inventory is too small the resulting problems: service levels caused a decline in the profit impact of marketing and corporate reputation; production system caused by inadequate supply of raw materials or other materials, affecting the normal production process; to shorten lead times, increase the number of orders, so order (production) costs; affect the balance of production and assembly of complete sets.NotesInventory management should particularly consider the following two questions:First, according to sales plans, according to the planned production of the goods circulated in the market, we should consider where, how much storage.Second, starting from the level of service and economic benefits to determine howto ensure inventories and supplementary questions.The two problems with the inventory in the logistics process functions.In general, the inventory function:(1)to prevent interrupted. Received orders to shorten the delivery of goods fromthe time in order to ensure quality service, at the same time to prevent out of stock.(2)to ensure proper inventory levels, saving inventory costs.(3)to reduce logistics costs. Supplement with the appropriate time interval compatible with the reasonable demand of the cargo in order to reduce logistics costs, eliminate or avoid sales fluctuations.(4)ensure the production planning, smooth to eliminate or avoid sales fluctuations.(5)display function.(6)reserve. Mass storage when the price falls, reduce losses, to respond to disasters and other contingencies.About the warehouse (inventory) on what the question, we must consider the number and location. If the distribution center, it should be possible according to customer needs, set at an appropriate place; if it is stored in central places to minimize the complementary principle to the distribution centers, there is no place certain requirements. When the stock base is established, will have to take into account are stored in various locations in what commodities.库存管理库存控制在谈到所谓“库存控制”的时候，很多人将其理解为“仓储管理”，这实际上是个很大的曲解。

外文文献译文(样例)

MSE协议攻击1引言2004年，CacheLogic公司（现名Velocix）根据一项六个月的调查指出，BitTorrent（以下简称BT）流量约占Internet总流量的33%[1]。

尽量各项调查得出的结论之间存在一定差异，但不可否认的是，BT的应用已经越来越广泛。

BT的大规模应用给网络性能带来了一定的负面影响。

因此，一些ISP已经开始对BT 进行限速。

为了应对这一情况，BT客户端的开发者设计了MSE协议，其主要目的是对数据流提供混淆功能，其次提供一定的保密和认证功能[2]。

BT客户端的开发者并没有基于已知的公有协议（例如IPSec），而是完全重新设计了MSE协议。

本文描述了MSE协议的大量漏洞，利用这些漏洞可以完全恢复出密钥和导致种子指纹的泄露。

我们把这种攻击应用到不同平台下的各种客户端。

结果显示，MSE协议具有大量漏洞，且协议本身有许多细节之处仍待完善。

2BitTorrent协议BitTorrent协议的设计目的是在网络上高效地传输大型文件。

当需要分发大型文件时，将之分解为文件块，并由多个节点提供下载，以减轻网络中单个节点的成本和负载。

当使用BitTorrent协议下载文件时，几乎将同时开始上传文件块。

BT网络由四个部分组成：下载者、做种者、Web服务器和Tracker服务器。

在使用BT协议共享某个文件之前，必须先创建一个种子文件。

这个种子文件包含了需要下载的共享文件中各个文件块的信息，包括Tracker信息、共享的文件块总数、所有文件块的哈希值等基本信息。

当下载完成后，可以利用这些哈希值来验证文件的完整性。

此外，文件中还包含一个用其它部分的元数据计算得到的哈希值InfoHash。

InfoHash值可以用来确定某个特定的种子文件。

除了将种子文件分发给用户下载外，还必须将文件信息报告给Tracker服务器。

Tracker服务器的工作是跟踪记录所有做种者的信息，并保持下载者之间的相互通信。

当用户使用BT协议下载文件时，首先从Web服务器上下载种子文件。

电子信息工程外文翻译外文文献英文文献

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。

毕业设计(论文)外文资料及译文(模板)

大连东软信息学院
毕业设计（论文）外文资料及译文
系所：
专业：
班级：
姓名：
学号：
大连东软信息学院
Dalian Neusoft University of Information
外文资料和译文格式要求
一、装订要求
1、外文资料原文（复印或打印）在前、译文在后、最后为指导教师评定成绩。

2、译文必须采用计算机输入、打印。

3、A4幅面打印，于左侧装订。

二、撰写要求
1、外文文献内容与所选课题相关。

2、本科学生译文汉字字数不少于4000字，高职学生译文汉字字数不少于2000字。

三、格式要求
1、译文字号：中文小四号宋体，英文小四号“Times New Roman”字型，全文统一，首行缩进2个中文字符，1.5倍行距。

2、译文页码：页码用阿拉伯数字连续编页，字体采用“Times New Roman”字体，字号小五，页底居中。

3、译文页眉：眉体使用单线，页眉说明五号宋体，居中“大连东软信息学院本科毕业设计（论文）译文”。

外文参考文献译文及原文

目录1介绍 (1)在这一章对NS2的引入提供。

尤其是，关于NS2的安装信息是在第2章。

第3章介绍了NS2的目录和公约。

第4章介绍了在NS2仿真的主要步骤。

一个简单的仿真例子在第5章。

最后，在第.8章作总结。

2安装 (1)该组件的想法是明智的做法，以获取上述件和安装他们的个人。

此选项保存downloadingtime和大量内存空间。

但是，它可能是麻烦的初学者，因此只对有经验的用户推荐。

(2)安装一套ns2的all-in-one在unix-based系统 (2)安装一套ns2的all-in-one在Windows系统 (3)3目录和公约 (4)目录 (4)4运行ns2模拟 (6)ns2程序调用 (6)ns2模拟的主要步骤 (6)5一个仿真例子 (8)6总结 (12)1 Introduction (13)2 Installation (15)Installing an All-In-One NS2 Suite on Unix-Based Systems (15)Installing an All-In-One NS2 Suite on Windows-Based Systems (16)3 Directories and Convention (17)Directories and Convention (17)Convention (17)4 Running NS2 Simulation (20)NS2 Program Invocation (20)Main NS2 Simulation Steps (20)5 A Simulation Example (22)6 Summary (27)1介绍网络模拟器(一般叫作NS2)的版本，是证明了有用在学习通讯网络的动态本质的一个事件驱动的模仿工具。

模仿架线并且无线网络作用和协议(即寻址算法，TCP，UDP)使用NS2，可以完成。

一般来说，NS2提供用户以指定这样网络协议和模仿他们对应的行为方式。

外文文献翻译---基于 Web 的分析系统

文献翻译基于 Web 的分析系统院（系）名称信息工程学院专业名称软件工程英文译文基于Web 的分析系统马克斯科特，约翰琳1 摘要在使用分析型数据库时，分析人员将数据归入公用组，并尝试确定条件变化时产生的结果。

例如，提高产品价格会增加单位利润，但可能会减少销量ù会产生较高还是较低的总利润？或者，联邦贴现率的下降会如何影响房地产贷款的收益？为了帮助分析人员根据历史趋势做出有根据的预测，Microsoft 在SQL Server 2000 中提供了分析服务，在SQL Server 7.0 中提供了OLAP 服务。

这些服务都提供OLAP 功能，能够将存储在SQL Server（或任何其他OLE DB 兼容的数据源）上的数据处理成多维数据结构，称为多维数据集。

多维数据集简化了趋势分析和建立实体间交互方式联系的过程。

例如，房地产投资者采用现金流模型来区分一组具有共同特征（如：地产类型、地理位置和利率范围）的贷款，并预测各种事件的影响。

如果贷款提前偿还或者借款人违约，后果将会如何？此类不可预测的事件会如何影响贷款所担保的债券的收益。

从包含几百笔贷款的清单中选择并区分具有分析特征的贷款是需要相当技巧的。

分析服务和OLAP 服务有助于在各组贷款间建立联系，以便分析人员能够建立贷款假设模型。

为了帮助客户的房地产分析人员预测商业抵押证券的业绩，我们的开发小组需要设计一个以各种方式（如：利率、到期期限或地产位置）来简化贷款分类的系统。

其界面应易于学习和使用。

而且，所开发的系统需要在Internet 上进行安全的部署。

为了满足这些要求，开发小组选择了分析服务。

2 在Web上部署Office在选定了后端技术后，开发小组开始制订实现前端界面的计划。

多数金融分析人员使用Microsoft Excel，他们对其界面比较熟悉，感觉也很舒服。

Excel 包括数据透视表服务，能够允许分析人员连接到分析服务数据库。

Excel 的拖放界面提供了对多维数据的简单和直观的访问，并不要求用户进行深入的培训。

管理信息系统外文翻译

毕业设计(论文)外文资料翻译系：专业：姓名：学号：外文出处： Madiha shah procedia-social and附件：1.外文资料翻译译文；2.外文原文(用外文写)附件1：外文资料翻译译文管理信息系统(MIS)对学校的影响-----文献报告Madiha Shah Malaysia. Malaya大学马来西亚摘要鉴于其快捷和有效性,教育管理信息技术的使用已迅速增加。

在其发展的初始阶段,管理信息系统(MIS)的主要目的和使用是改善学校办公室活动的效率。

它是用于存储的学生和全体职工的数据。

最重要的的是重要数据录入和整理,而不是在数据传输或分析。

管理信息的价值当时被人们公认。

在集成阶段，全盘回顾文献，其强调积极影响学校管理和管理信息系统管理,包括更好的可访问性信息,更有效的管理,学校资源更高的利用率同时也减少了工作量,更好的时间管理,提高报告的质量。

对于信息管理系统，大量的抑制剂的使用在文献中很明显,其中最重要的是缺乏时间,缺乏信心或能力,缺乏培训,缺乏高层管理人员的支持,缺乏技术支持等。

管理信息系统可以提供所需的信息通知计划、决策和评估方面相关的管理员和教师。

管理信息系统改变了学校管理领域的领导、决策、工作负载、人力资源管理、沟通、责任,规划等方方面面。

这些系统可以帮助学校管理者在决定学校的目标,制定战略计划,分配资源,评估员工的绩效以及组织时更加顺利。

关键词: 管理信息系统、MIS 、学校管理、学校管理。

1、介绍电脑被视为有潜力在教学、学习和学校的管理方面做出重大的贡献。

信息和介绍通信技术(ICT)进入到学校包括硬件、软件、网络和员工发展的广泛的投资被认为是值得的前提。

如果有证据表明,它使在学校的表现和产生相应的影响有效性(Condie et al .,2007)真实存在。

利用信息技术在教育管理就会由于其效率和迅速增加有效性。

学校管理人员花大量的时间用于解决复杂的分配问题(如人员分配、资源分配、时间安排)和监控学校的操作已经有了更好的选择旨运用发展该技术。

外文文献翻译译稿和原文【范本模板】

外文文献翻译译稿1卡尔曼滤波的一个典型实例是从一组有限的，包含噪声的，通过对物体位置的观察序列(可能有偏差）预测出物体的位置的坐标及速度。

在很多工程应用（如雷达、计算机视觉）中都可以找到它的身影。

同时，卡尔曼滤波也是控制理论以及控制系统工程中的一个重要课题。

例如，对于雷达来说，人们感兴趣的是其能够跟踪目标.但目标的位置、速度、加速度的测量值往往在任何时候都有噪声。

卡尔曼滤波利用目标的动态信息，设法去掉噪声的影响，得到一个关于目标位置的好的估计.这个估计可以是对当前目标位置的估计(滤波),也可以是对于将来位置的估计（预测），也可以是对过去位置的估计（插值或平滑).命名[编辑]这种滤波方法以它的发明者鲁道夫。

E。

卡尔曼(Rudolph E. Kalman）命名，但是根据文献可知实际上Peter Swerling在更早之前就提出了一种类似的算法。

斯坦利。

施密特（Stanley Schmidt)首次实现了卡尔曼滤波器。

卡尔曼在NASA埃姆斯研究中心访问时,发现他的方法对于解决阿波罗计划的轨道预测很有用，后来阿波罗飞船的导航电脑便使用了这种滤波器。

关于这种滤波器的论文由Swerling（1958）、Kalman (1960)与Kalman and Bucy（1961）发表。

目前,卡尔曼滤波已经有很多不同的实现.卡尔曼最初提出的形式现在一般称为简单卡尔曼滤波器。

除此以外，还有施密特扩展滤波器、信息滤波器以及很多Bierman, Thornton开发的平方根滤波器的变种.也许最常见的卡尔曼滤波器是锁相环，它在收音机、计算机和几乎任何视频或通讯设备中广泛存在。

以下的讨论需要线性代数以及概率论的一般知识。

卡尔曼滤波建立在线性代数和隐马尔可夫模型(hidden Markov model）上.其基本动态系统可以用一个马尔可夫链表示，该马尔可夫链建立在一个被高斯噪声（即正态分布的噪声）干扰的线性算子上的。

系统的状态可以用一个元素为实数的向量表示.随着离散时间的每一个增加，这个线性算子就会作用在当前状态上，产生一个新的状态,并也会带入一些噪声,同时系统的一些已知的控制器的控制信息也会被加入。

计算机科学与技术外文翻译英文文献中英对照

附件1：外文资料翻译译文大容量存储器由于计算机主存储器的易失性和容量的限制, 大多数的计算机都有附加的称为大容量存储系统的存储设备, 包括有磁盘、CD 和磁带。

相对于主存储器，大的容量储存系统的优点是易失性小，容量大，低成本, 并且在许多情况下, 为了归档的需要可以把储存介质从计算机上移开。

术语联机和脱机通常分别用于描述连接于和没有连接于计算机的设备。

联机意味着，设备或信息已经与计算机连接，计算机不需要人的干预，脱机意味着设备或信息与机器相连前需要人的干预，或许需要将这个设备接通电源，或许包含有该信息的介质需要插到某机械装置里。

大量储存器系统的主要缺点是他们典型地需要机械的运动因此需要较多的时间，因为主存储器的所有工作都由电子器件实现。

1. 磁盘今天，我们使用得最多的一种大量存储器是磁盘，在那里有薄的可以旋转的盘片，盘片上有磁介质以储存数据。

盘片的上面和（或）下面安装有读/写磁头，当盘片旋转时，每个磁头都遍历一圈，它被叫作磁道，围绕着磁盘的上下两个表面。

通过重新定位的读/写磁头，不同的同心圆磁道可以被访问。

通常，一个磁盘存储系统由若干个安装在同一根轴上的盘片组成，盘片之间有足够的距离，使得磁头可以在盘片之间滑动。

在一个磁盘中，所有的磁头是一起移动的。

因此，当磁头移动到新的位置时，新的一组磁道可以存取了。

每一组磁道称为一个柱面。

因为一个磁道能包含的信息可能比我们一次操作所需要得多，所以每个磁道划分成若干个弧区，称为扇区，记录在每个扇区上的信息是连续的二进制位串。

传统的磁盘上每个磁道分为同样数目的扇区，而每个扇区也包含同样数目的二进制位。

（所以，盘片中心的储存的二进制位的密度要比靠近盘片边缘的大）。

因此，一个磁盘存储器系统有许多个别的磁区, 每个扇区都可以作为独立的二进制位串存取，盘片表面上的磁道数目和每个磁道上的扇区数目对于不同的磁盘系统可能都不相同。

磁区大小一般是不超过几个KB; 512 个字节或1024 个字节。

毕业论文外文文献翻译

学号：20090127712009012771
2013届本科生毕业论文英文参考文献翻译
Oracle虚拟机服务器软件虚拟化在一个64位
Linux环境的性能和可扩展性
（译文）
学院（系）：
信息工程
专业年级：
学生姓名：
指导教师：
合作指导教师：
完成日期：
2013年6月
Oracle虚拟机服务器软件虚拟化在一个64位Linux环境的性能和可扩展性
benefits, however, this has not been without its attendantproblems and anomalies, such as performance tuning anderratic performance metrics, unresponsive virtualized systems,crashed virtualized servers, misconfigured virtual hostingplatforms, amongst others. The focus of this research was theanalysis of the performance of the Oracle VM servervirtualization platform against that of the bare-metal serverenvironment. The scalability and its support for high volumetransactions were also analyzed using 30 and 50 active usersfor the performance evaluation. Swingbench and LMbench,two open suite benchmark tools were utilized in measuringperformance. Scalability was also measured using Swingbench.Evidential results gathered from Swingbench revealed 4% and8% overhead for 30 and 50 active users respectively in theperformance evaluation of Oracle database in a single OracleVM. Correspondingly, performance metric法

电子信息工程外文翻译参考文献

电子信息工程外文翻译参考文献(文档含中英文对照即英文原文和中文翻译)译文：利用修改后的迈克耳孙干涉仪进行长度测量的初步结果摘要:基于飞秒加速器的装置，该装置建造在上海应用物理研究所(SINAP),最近一个经修改后的远红外迈克耳孙干涉仪通过光学自相关方法，已经被用来测量电子光束的长度。

相比较于之前常规的迈克耳孙干涉仪,我们使用一个空心回射器而不是一个平面反射镜的反射镜。

本文将为大家介绍实验设置和长度测量的结果。

关键词：飞秒线性加速器，长度串，干涉仪，空心回射器1 介绍最近关于电子脉冲压缩的实验产生高峰值电流和亮度飞秒电子串。

关于短束源自于高质量光束的潜在应用要求这方面一起了广泛兴趣。

高质量的核物理加速器,自由电子激光器驱动加速器,下一代线性对撞机,第四代光源都需要短时间光束脉冲。

同时,在进程中对诊断的短电子串的研究也起了重要作用。

有几种已经使用或正在开发的方法去测量短电子串的长度。

这些一般分为两类:频域方法和时域方法。

众所周知，在时域测量长度的方法中使用条纹相机，条纹相机已经证实是限于串长度超过200 fs ，此外,条纹相机昂贵并且测量系统复杂。

相对于时域测量方法，频域测量使用相干过渡辐射(CTR )从金属箔在测量飞秒脉冲的短电子中已经显现出前景。

本文我们首先从短电子串方面给出了基于一代的高强度相干渡越辐射的理论和试验研究,然后讨论该方法基于相干渡越辐射测量束飞秒的长度,并从改进电子实验装置给出了串长度测量的结果。

最后,我们分析了空气湿度对串长度测量的影响，并且阐释了对未来研究的计划。

2 理论背景2.1 相干渡越辐射源自于相对论性电子串辐射如同步加速器辐射跃迁辐射等，本质上有较广的范围，如果辐射的波长短于电子串长度，这个阶段的辐射电子不同于彼此，所以辐射是不连贯的。

另一方面,如果波长较长的串长度，辐射是连贯的并且辐射强度的平方成正比每串数字电子。

光谱强度发出一束N 粒子：11()()(1)()|()|tot I NI N N I f λλλλ=+- （2-1）这里1()I λ是靠单电子辐射的强度，()f λ是串形成因素，这是傅里叶变换的规范化的电子密度分布()S Z 。

数据采集外文文献翻译中英文

数据采集外文文献翻译(含：英文原文及中文译文)文献出处：Txomin Nieva. DATA ACQUISITION SYSTEMS [J]. Computers in Industry, 2013, 4(2):215-237.英文原文DATA ACQUISITION SYSTEMSTxomin NievaData acquisition systems, as the name implies, are products and/or processes used to collect information to document or analyze some phenomenon. In the simplest form, a technician logging the temperature of an oven on a piece of paper is performing data acquisition. As technology has progressed, this type of process has been simplified and made more accurate, versatile, and reliable through electronic equipment. Equipment ranges from simple recorders to sophisticated computer systems. Data acquisition products serve as a focal point in a system, tying together a wide variety of products, such as sensors that indicate temperature, flow, level, or pressure. Some common data acquisition terms are shown below.Data collection technology has made great progress in the past 30 to 40 years. For example, 40 years ago, in a well-known college laboratory, the device used to track temperature rises in bronze made of helium was composed of thermocouples, relays, interrogators, a bundle of papers, anda pencil.Today's university students are likely to automatically process and analyze data on PCs. There are many ways you can choose to collect data. The choice of which method to use depends on many factors, including the complexity of the task, the speed and accuracy you need, the evidence you want, and more. Whether simple or complex, the data acquisition system can operate and play its role.The old way of using pencils and papers is still feasible for some situations, and it is cheap, easy to obtain, quick and easy to start. All you need is to capture multiple channels of digital information (DMM) and start recording data by hand.Unfortunately, this method is prone to errors, slower acquisition of data, and requires too much human analysis. In addition, it can only collect data in a single channel; but when you use a multi-channel DMM, the system will soon become very bulky and clumsy. Accuracy depends on the level of the writer, and you may need to scale it yourself. For example, if the DMM is not equipped with a sensor that handles temperature, the old one needs to start looking for a proportion. Given these limitations, it is an acceptable method only if you need to implement a rapid experiment.Modern versions of the strip chart recorder allow you to retrieve data from multiple inputs. They provide long-term paper records of databecause the data is in graphic format and they are easy to collect data on site. Once a bar chart recorder has been set up, most recorders have enough internal intelligence to operate without an operator or computer. The disadvantages are the lack of flexibility and the relative low precision, often limited to a percentage point. You can clearly feel that there is only a small change with the pen. In the long-term monitoring of the multi-channel, the recorders can play a very good role, in addition, their value is limited. For example, they cannot interact with other devices. Other concerns are the maintenance of pens and paper, the supply of paper and the storage of data. The most important is the abuse and waste of paper. However, recorders are fairly easy to set up and operate, providing a permanent record of data for quick and easy analysis.Some benchtop DMMs offer selectable scanning capabilities. The back of the instrument has a slot to receive a scanner card that can be multiplexed for more inputs, typically 8 to 10 channels of mux. This is inherently limited in the front panel of the instrument. Its flexibility is also limited because it cannot exceed the number of available channels. External PCs usually handle data acquisition and analysis.The PC plug-in card is a single-board measurement system that uses the ISA or PCI bus to expand the slot in the PC. They often have a reading rate of up to 1000 per second. 8 to 16 channels are common, and the collected data is stored directly in the computer and then analyzed.Because the card is essentially a part of the computer, it is easy to establish the test. PC-cards are also relatively inexpensive, partly because they have since been hosted by PCs to provide energy, mechanical accessories, and user interfaces. Data collection optionsOn the downside, the PC plug-in cards often have a 12-word capacity, so you can't detect small changes in the input signal. In addition, the electronic environment within the PC is often susceptible to noise, high clock rates, and bus noise. The electronic contacts limit the accuracy of the PC card. These plug-in cards also measure a range of voltages. To measure other input signals, such as voltage, temperature, and resistance, you may need some external signal monitoring devices. Other considerations include complex calibrations and overall system costs, especially if you need to purchase additional signal monitoring devices or adapt the PC card to the card. Take this into account. If your needs change within the capabilities and limitations of the card, the PC plug-in card provides an attractive method for data collection.Data electronic recorders are typical stand-alone instruments that, once equipped with them, enable the measurement, recording, and display of data without the involvement of an operator or computer. They can handle multiple signal inputs, sometimes up to 120 channels. Accuracy rivals unrivalled desktop DMMs because it operates within a 22 word, 0.004 percent accuracy range. Some data electronic automatic recordershave the ability to measure proportionally, the inspection result is not limited by the user's definition, and the output is a control signal.One of the advantages of using data electronic loggers is their internal monitoring signals. Most can directly measure several different input signals without the need for additional signal monitoring devices. One channel can monitor thermocouples, RTDs, and voltages.Thermocouples provide valuable compensation for accurate temperature measurements. They are typically equipped with multi-channel cards. Built-in intelligent electronic data recorder helps you set the measurement period and specify the parameters for each channel. Once you set it all up, the data electronic recorder will behave like an unbeatable device. The data they store is distributed in memory and can hold 500,000 or more readings.Connecting to a PC makes it easy to transfer data to a computer for further analysis. Most data electronic recorders can be designed to be flexible and simple to configure and operate, and most provide remote location operation options via battery packs or other methods. Thanks to the A/D conversion technology, certain data electronic recorders have a lower reading rate, especially when compared with PC plug-in cards. However, a reading rate of 250 per second is relatively rare. Keep in mind that many of the phenomena that are being measured are physical in nature, such as temperature, pressure, and flow, and there are generallyfewer changes. In addition, because of the monitoring accuracy of the data electron loggers, a large amount of average reading is not necessary, just as they are often stuck on PC plug-in cards.Front-end data acquisition is often done as a module and is typically connected to a PC or controller. They are used in automated tests to collect data, control and cycle detection signals for other test equipment. Send signal test equipment spare parts. The efficiency of the front-end operation is very high, and can match the speed and accuracy with the best stand-alone instrument. Front-end data acquisition works in many models, including VXI versions such as the Agilent E1419A multi-function measurement and VXI control model, as well as a proprietary card elevator. Although the cost of front-end units has been reduced, these systems can be very expensive unless you need to provide high levels of operation, and finding their prices is prohibited. On the other hand, they do provide considerable flexibility and measurement capabilities.Good, low-cost electronic data loggers have the right number of channels (20-60 channels) and scan rates are relatively low but are common enough for most engineers. Some of the key applications include:•product features•Hot die cutting of electronic products•Test of the environmentEnvironmental monitoring•Composition characteristics•Battery testBuilding and computer capacity monitoringA new system designThe conceptual model of a universal system can be applied to the analysis phase of a specific system to better understand the problem and to specify the best solution more easily based on the specific requirements of a particular system. The conceptual model of a universal system can also be used as a starting point for designing a specific system. Therefore, using a general-purpose conceptual model will save time and reduce the cost of specific system development. To test this hypothesis, we developed DAS for railway equipment based on our generic DAS concept model. In this section, we summarize the main results and conclusions of this DAS development.We analyzed the device model package. The result of this analysis is a partial conceptual model of a system consisting of a three-tier device model. We analyzed the equipment project package in the equipment environment. Based on this analysis, we have listed a three-level item hierarchy in the conceptual model of the system. Equipment projects are specialized for individual equipment projects.We analyzed the equipment model monitoring standard package in the equipment context. One of the requirements of this system is the ability to use a predefined set of data to record specific status monitoring reports. We analyzed the equipment project monitoring standard package in the equipment environment. The requirements of the system are: (i) the ability to record condition monitoring reports and event monitoring reports corresponding to the items, which can be triggered by time triggering conditions or event triggering conditions; (ii) the definition of private and public monitoring standards; (iii) Ability to define custom and predefined train data sets. Therefore, we have introduced the "monitoring standards for equipment projects", "public standards", "special standards", "equipment monitoring standards", "equipment condition monitoring standards", "equipment project status monitoring standards and equipment project event monitoring standards, respectively Training item triggering conditions, training item time triggering conditions and training item event triggering conditions are device equipment trigger conditions, equipment item time trigger conditions and device project event trigger condition specialization; and training item data sets, training custom data Sets and trains predefined data sets, which are device project data sets, custom data sets, and specialized sets of predefined data sets.Finally, we analyzed the observations and monitoring reports in the equipment environment. The system's requirement is to recordmeasurements and category observations. In addition, status and incident monitoring reports can be recorded. Therefore, we introduce the concept of observation, measurement, classification observation and monitoring report into the conceptual model of the system.Our generic DAS concept model plays an important role in the design of DAS equipment. We use this model to better organize the data that will be used by system components. Conceptual models also make it easier to design certain components in the system. Therefore, we have an implementation in which a large number of design classes represent the concepts specified in our generic DAS conceptual model. Through an industrial example, the development of this particular DAS demonstrates the usefulness of a generic system conceptual model for developing a particular system.中文译文数据采集系统Txomin Nieva数据采集系统, 正如名字所暗示的, 是一种用来采集信息成文件或分析一些现象的产品或过程。

【计算机专业文献翻译】信息系统的管理

基本上每一台计算机都能连接到网络中，一台计算机要么是客户端，要么就是服务器。服务器更具强大和区别性，因为它存储了网络中其他机器需要使用的数据。个人计算机的客户端在需要数据的时候随时都可以访问服务器。网络中既是服务器又是客户端的计算机称作点对点网络。
传播媒体必须经过仔细选择，平衡每个媒体的优点和缺点，这个选择决定网络的速度。改变一个已经安装好的网络媒体通常非常昂贵。最实用的传播媒体是电缆，光纤，广播，光，红外线。
本科生毕业设计（论文）外文资料译文
（2009届）
论文题目
基于Javamail的邮件收发系统
学生姓名
学号
专业
计算机科学与技术
班级
指导教师
职称
讲师、副教授
填表日期
2008年 12月 10 日
信息科学与工程学院教务科制
外文资料翻译（译文不少于2000汉字）
1．所译外文资料：信息系统的管理Managing Information Systems
数据共享是网络的重要应用之一。网络可以共享交易数据，搜索和查询数据，信息，公告板，日历，团队和个人信息数据，备份等。在交易的时候，连接一个公司的电脑的中央数据库包括现有库存信息和出售的数据信息。如果数据被储存在一个中央数据库中，搜查结果便可从中获取。电子邮件的发送已经成为同事之间最常用的信息共享的方式之一。
自从信号在空中传输后，广播，光以及红外线作为传播媒体已经不需要电缆。
传输能力，即一个传播媒体一次性传输的数据量，在不同的媒体中，材料不同，安装时付出的劳动不同，传输的能力有很大的区别。传播媒体有时候被合并，代替远地域之间的高速传播媒体，速度虽慢，但是成本低，在一幢大楼中进行信息传播。
连接设备包括网络连接卡NICS，或者在计算机和网络间进行传输和信号传递的局域网LAN卡。其他常用的设备连接不同的网络，特别是当一个网络使用不用的传输媒体的时候。使用一个对很多用户都开放的系统很重要，比如windows/NT,Office2000，Novell，UNIX.

虚拟现实外文文献翻译最新译文资料

虚拟现实外文文献翻译最新译文资料
本文档为虚拟现实（Virtual Reality，简称VR）领域的外文文
献翻译最新译文资料。

以下是一些最新的关于虚拟现实的外文文献
翻译资料，供您参考：
1. 标题：《Virtual Reality: Past, Present, and Future》
作者：John Smith
摘要：本文回顾了虚拟现实的发展历史，介绍了目前虚拟现实
的现状，以及对未来虚拟现实的展望。

文章探讨了虚拟现实在教育、娱乐、医疗等领域的应用，并提出了一些与虚拟现实相关的挑战和
机遇。

2. 标题：《Virtual Reality and Its Impact on Society》
作者：Emily Johnson
摘要：本文探讨了虚拟现实技术对社会的影响。

文章讨论了虚
拟现实在社交互动、沉浸式体验、心理健康等方面的应用，并提出
了一些社会伦理和法律问题。

作者认为，虚拟现实将对我们的日常
生活、工作和文化产生深远影响。

3. 标题：《Virtual Reality in Education: Enhancing Learning Experiences》
作者：Sarah Davis
摘要：本文探讨了虚拟现实技术在教育领域的应用。

文章介绍
了虚拟实验室、虚拟实地考察等教育领域中的案例，并说明了虚拟
现实可以提供更加沉浸式、互动性和个性化的研究体验。

请注意，以上资料仅作为参考，具体内容和观点请以原文为准。

外文文献—管理信息系统

附录Ⅰ外文资料：Management Information SystemsWriter: Raymond McLeod, Jr·George Schell ，2007Information is one of the main resources available to the manager. Information can be managed just as any other resource, and interest in this topic stem from two influences. First, business has become more complex, and second, the computer has achieved improved capabilities.Computer information is used by managers, non-managers, and persons and organizations within the firm’s environment. Managers are found on all orga nizational levels of the firm and in all business areas. Managers perform functions and play roles; to be successful and they need skill in communication and problem solving. Managers should be computer literate, but, more important, they should be information literate.It is helpful if the manager has an ability to see his or her unit as a system composed of subsystems and existing within a larger super system. The firm is a physical system, but it is managed through a conceptual system. The conceptual system consists of an information processor that transforms data into information and represents the physical resources.The first major computer application was used to process accounting data. That application was followed by four others: management information systems, decision support system, the virtual office, and knowledge-based system. All five of these applications compose the computer-based information system.What are the information resources?The first efforts to engage in information management focused on data. These efforts occurred in conjunction with widespread adoption database management systems during the 1970s and 1980s. Firms reasoned that if they managed their data by implementing computer-based DBMSs, they would, in effect, manage their information.A broader view, however, is that you can manage information by managing the resources that produce the information. In other words, rather than concentrate on the input (the data)and the output (the information), attention should also be given to the information processor that transforms the input into the output. This processor includes the hardware and software, as well an the persons who develop, operate, and use the systems. Also included are the facilities that house the resources.Main Type of Resource sThe manager managers five main type of resources:●Personnel●Material●Machines(including facilities and energy)●Money●Information(including data)The task of the manager is to manage these resources in order to use them in themost effective way. The first four resource types are tangible; they exist physically and can be touched. We use the term physical resource to describe them. The fifth resource type, information, is not valuable form what it represents. That is we use the term conceptual resource to describe information and data. Managers use conceptual resources to manage physical resources.How Information is managedIt is easy to see how a manager managers physical resources, but management applies equally well to conceptual resources. The manager ensures that the necessary raw data is gathered and then processed into usable information. He or she then ensures that appropriate individuals receive the information in the proper form at the proper time so that it can be used. Finally, the manager discard information that has outlived its usefulness and replaces it with information that is current and accurate. All of this activity-acquiring information, using it in the most effective way, and discarding it at the proper time-is called information management.Increasing Complexity of Business ActivityBusiness has always been complex, but it is more so today than ever before. All firms are subject to international economic influences and compete in a worldwide marketplace, the technology of business is becoming more complex, the time frame for taking action is shrinking, and there are social constrains.International economic influences Firms of all size are subject to economic influences that can originate anywhere in the world. Such influence can be seen in the relative values of the currencies of each nation. Buyers make purchases in those countries where their currencies have the greatest value. For example, when Mexico devalued its peso during the late 1980s, tourists decided to take their vacations there, rather than in place like Hawaii.Worldwide competition Firms no longer compete in only their own geographic area. Rather, competition exists on a worldwide scale. The effects of this competition can be seen in the imports from foreign countries. The decision by General Motors in the early 1990s to close many of its plans indicates that even industry giants are not insulated from the effects of competition which can originate anywhere in the world.Increasing complexity technology We see example of technology in business every day-barcode scanners in supermarkets, computer-based airline reservation systems, automated teller technology that we do not see-factory robots and automated merchandise storage-and-handling equipment, for example. Firms invest in this technology to perform necessary operation. Just think what would happen if the L.L.Bean mail-order operation in Maine or Harrods’s department store in London could no longer use their computer!Shrinking time frames All phases of business operations are performed more rapidly than ever before. Sales representatives engage in telemarketing to contact their customers within seconds by telephone, sale orders are transmitted electronically from one computer to another, and manufacturers schedule raw material deliveries to arrive “just in time.”Social constraints Oddly enough, not all pressures favor production; some favor nonproduction. This is true in the case of products and services that society findsundesirable. Business decisions must be based on economic factors, but social costs and payoffs must be considered as well. Plant expansion, new products, new products, new sales outlets, and similar actions must all be weighed in term of their environmental impact.Each of these influences contributes to the complexity of business.Physical systems and conceptual systemsThe business firm is a physical system, composed of physical resources. A conceptual system, on the other hand, is a system that uses conceptual resources-information and data-to represent a physical system. A conceptual system exists, for example, as mental images in the manager’s mind, as figures or lines on a sheet of paper, or in the electronic form of the computer’s storage.The computer is a physical system, but the data and information stored in it can be viewed as a conceptual system. The date and information represent one or more physical system. How the date and information are stored is unimportant. What is important is what the data and information represent. The physical system is important for what it is; the conceptual system is important for its representation of the physical system.What stimulated end-user computing?End-user computing evolved because of four main influences.●An increase in computer literacy During the early 1980s, good computereducation programs at both the college and precollege level began to have an impact. Management ranks, especially on the lower levels, began to fill with computer-literate people.●The information services backing Information specialists have always had morework than they can handle. This situation became critical during the early 1980s, when users began making demands on information services for additional systems support. Information services could not respond quickly enough, and backlogs built up. Some users had to wait two or three year for their jobs to work their way through the backlog.●Low-cost hardware During this period, the market becomes flooded withlow-cost microcomputers. Users could obtain their own hardware by placing an order at the local computer store by telephone and making payment for the petty cash fund.●Prewritten software Both hardware and software firms produced software thatwould perform basic accounting tasks as well as provide information for decision making. This prewritten software offered enhanced support and ease of use, and it enabled firms and individual users with little or no computer expertise to implement computer-based system.The combination of these four influences accounted for the explosion of end-user computing.System ElementsNot all systems have the same combination of elements, but a basic configuration is illustrated in figure 1.5. Input resources are transformed into output resources. The resources flow from the input element, through the transformation element, and to theoutput element. A control mechanism monitors the transformation process to ensure that the system meets its objectives. The control mechanism is connected to the resource flow by means of a feedback loop, which obtains information from the system output and makes it available to the control mechanism. The control mechanism compares the feedback signals to the objectives and directs signals to the input element when it is necessary to change the system operation.When this arrangement of elements is used to explain a heating system, for example, the input represents the fuel, such as natural gas or coal. Combustion is the heating process that transforms the fuel into heat-the output. The control mechanism is the thermostat, the feedback loop is the wiring that connects the thermostat to the heater, and the objective is the temperature that is dialed into the thermostat.When the system elements represent a manufacturing firm, the input resources are the raw materials, which are transformed into finished products or services by the manufacturing process. The control mechanism is the firm’s management, the objectives are the goals that the firm seeks to achieve, and the feedback loop is the flow of information both to and from management.中文译文：管理信息系统作者：Raymond McLeod, Jr·George Schell 信息是管理者可以使用的主要资源之一。

企业会计信息化研究外文文献翻译最新译文

文献出处: T Vatuiu. The study of enterprise accounting information [J]. Annals of theUniversity of Petrosani, Economics, 2015, 5: 201-208.原文The study of enterprise accounting informatizationT VatuiuAbstractThe development of information technology is accompanied by the rise and popularization of computer and the emergence and development, the original computer is applied to the finance department handling accounting business, enterprise information since birth is the accounting information into the center, that is to say, the success of accounting informationization construction is directly related to the success of the enterprise informationization strategy. In the enterprise implementation of accounting information system is conducive to further standardize the operation of the enterprise funds, for the enterprise management decision makers to provide real and effective reference data, in a rapidly changing market competition to accurately grasp the market changes, better management combined with the actual enterprise decision-making, to achieve the optimal allocation of resources and benefits.Keywords: enterprise; Accounting informationization; ERP1 IntroductionWith the development of computer information technology and penetration in the social each domain, the information technology is more and more attention, so information technology is also naturally become the important driving force of economic development. At present, the world has become a global village, networking and globalization has become the main trend of world development, starting in the 1980 s, countries began to make the informatization development strategy adjustment and as an important support power, promote the development of national economy, also took to the formal information construction development road, national policies, the informationization construction as an important part for a period of time in the future of the country's development goals, and to promote and facilitate the process ofthe country's enterprise information construction, to lay a solid position in the market competition.Enterprise as the important pillar of national economy growth, closely related to the development and growth of the national economy informatization as the subsystem of the national informatization, is the surest way to achieve modernization of the enterprise, therefore, only to promote the enterprise information, to better promote the national economic information.2The concept and related theories of enterprise informatization2.1 The meaning of enterprise informationAccounting information is the wide application of information technology in the accounting work, the development of information resources, the use of information technology to promote enterprise to develop the economy and improve the economic benefit, and to provide comprehensive information services to various aspects of the process. The main content of the accounting information is to establish a system of accounting information and accounting information system is the main part of enterprise information system, the basic law of development is consistent with the enterprise information system. Accounting informationization is popular in recent years a noun, it is different from the accounting computerization, is to cater to the information society and the application of a new word, it has realized the accounting and the integration of information technology, is the enterprise management in the new period of main channel of information for policy makers, and effectively solve the accounting computerization existence island phenomenon is an important way, is conducive to standardize the procedures of accounting management and enhancing the market competitiveness of the enterprise. Accounting information is the key of enterprise informatization construction and most important, to the enterprise overall information-based construction and implementation plays an important role in success.2.2 ERP concepts and related theoriesERP (Enterprise Resource Planning) refers to an Enterprise Resource Planning system, it is GartnerGrouP companies in the United States in 1990.It will enterpriseplanning, management, marketing, finance, purchasing set at an organic whole, to the customer's needs and the activities of the enterprise goal to unify, to all the enterprise resources integration into a dynamic complete supply chain. The core of the ERP is the management of the enterprise is an organic whole, emphasized the ERP is an enterprise's lean management and lean production, realized the unity of advance planning and afterwards. Use of ERP software system to realize the coordination and control of each department, make the business process tends to rationalize, to better achieve department the input for the optimization of the reconstruction to lay the work, is the enterprise continuously self-assessment and important way to improve management.ERP has experienced four stages of development, its core is to realize the management thoughts of the entire supply chain comprehensive dynamic effective management and control. In particular, mainly includes three aspects of thought. One is reflect of the whole supply chain resources comprehensive management thoughts. Today is the era of win-win cooperation, enterprise competition is, in fact, to a certain extent has evolved into a competition between the supply chain and another supply chain problems, enterprises should not only know the optimal configuration of their resources, also need to coordinate the advantage of other resources, such as with suppliers, customers, and the relationship between the sales network and so on, thus to the all-round development of the enterprise into a dynamic system, and to effectively implement the management of the enterprise supply chain is a dynamic and control. Tt is to embody the lean production, concurrent engineering and virtual manufacturing management thinking. The core of the ERP system shown above all is lean production. Is all supply chain partners into the overall production process, to establish the enterprise and the interests of customers, suppliers and other partners sharing mechanism, form an integral part of the supply chain. Followed by agile manufacturing, when there is new on the market opportunities and business partners can't meet, can rapidly form a virtual factory, thus realize products in the limited time and resources optimization configuration, enterprise in market activity, high quality and diverse and flexible. Then, it is reflected in advance plan to control the overallmanagement of thoughts later. ERP enterprise production planning, logistics demand plan, sales plan, budget and human resources plan integrated into a whole system, and successfully realized the centralization and unification of various plans for formal management. In addition, the ERP system of the transaction to the relevant accounting synchronous records, ensure the cash flow and logistics of synchronization and consistent, can understand the ins and outs of money thus to control and management in a timely manner.3Enterprise informatization development present situationFrom the perspective of the development of accounting information system, the early of the accounting information system is mainly the financial and reporting software, solve and manage the daily accounting and report processing, the financial department are introduced corresponding accounts receivable and payroll data system. But the period of the establishment of the accounting information system often do not pay attention to economic benefits, in the process of actual operation on data processing is also a lack of control, as a result, the user for the accounting information system is still in the stage stay at a respectful distance from sais the further development of the computer in the world and popular, wins initial success in accounting information system in the financial sector, then gradually developed, and the accounting information system in other department managers also begin to pay close attention to the information system of investment benefit, at this point, an enlarged the scope of information system, in addition to the accounting information system, also including the personnel information system, marketing information system and logistics information system, after that, the accounting information system to the widespread popularity and spread of development stage, the stage by the managers convene the different functions of the overall planning, and set up a special information management center of internal control activities, to start the project management system, since then, the accounting information system on the right track.3.1 Accounting network systematization degree is lowAccounting information is the premise of accounting network, according to relevant data shows: enterprise all serious resource waste. This is mainly because thenetwork degree applied in enterprise accounting system is too low. Enterprise data submitted too many mistakes. This is mainly because the typing errors in the process of data transmission, computer fault, and other factors. Enterprise cannot very good coordination between different departments. Only in the financial sector, mainly because the accounting software applications cannot be good coordination with other departments.3.2 Insufficient understanding of ERP systemFirst, many enterprise ERP system is regarded as the common office software, rather than use it as an integral part of the management system to run, the myth has led to many enterprises will be the construction of the ERP investment focus in ERP software system, and neglect to personnel training and the adjustment of the system process. Second, insufficient understanding of ERP's return on investment. Many small and medium-sized enterprise knowledge of ERP system there is a big deviation, either the ERP system is considered to be the panacea to solve the problem of enterprise all, don't think it's not much value to the enterprise, can objectively evaluate the value of the ERP system makes the ERP investment return expectations appeared larger gap. Third, the lack of understanding of the function of ERP system, think that ERP system is the simple use of inventory, logistics and financial system, not the whole development of the enterprise management planning together, through the system dynamic adjustment to realize the unification of the whole enterprise management.3.3 The accounting business process is not standardEnterprise accounting information system from accounting subject classification, the accounting information collection, selection, summary, but the current implementation, accounting information system provides information far cannot satisfy the needs of corporate decision makers, so that the accounting activities became independent departments in operation, the data generated by the natural and the business sector has been out of line. Enterprise after the implementation of accounting information system, simply by using the computer instead of manual accounting, and failed to change from the whole enterprise accounting businessprocess, did not realize the fundamental process reengineering. And in practice, enterprise capital is seriously lagging behind the logistics information, thus causes the enterprise business process can't satisfy the need of real-time control in time, nature of accounting information and enterprise management state of point-to-point statistics, provide to the enterprise information management and the policy makers also loses the relative authenticity, the reliability of the information quality decline.4 ConclusionAccounting informationization is the enterprise informatization of the central nervous, many enterprises in the construction of informatization, often based on accounting information into a breakthrough, the accounting information is the core of enterprise informatization enterprise accounting information is an ongoing process, the goal is to set up the enterprise decision support system, decision-making for real-time, accurate and complete the production and transmission of information, realize the optimal allocation of resources, the rational flow of value; Help enterprises to quickly make the right decisions, in the harsh competition environment to survive and continue to grow stronger. Companies must also be on the outer and inner risk of the enterprise effective management and control, only through the implementation of the strategy analysis in the process of small and medium-sized enterprise accounting information system analysis, and can effectively deal with accounting information, accounting information system, internal control and external risk management, and to better promote the small and medium-sized enterprise accounting information system to realize healthy and sustainable development.译文企业会计信息化问题研究T Vatuiu摘要信息化的发展是伴随着计算机的兴起和普及而出现和发展的，最初计算机是应用于财务部门处理会计业务的，企业信息化从诞生开始就是以会计信息化为中心的，也就是说会计信息化建设的成功与否直接关系到企业信息化战略的成功。

计算机外文文献

计算机外文文献外文文献Computer network virus and precautionsWith the new network technology and application of the continuous rapid development of the computer network should Use of becoming increasingly widespread, the role played by the increasingly important computer networks and human More inseparable from the lives of the community's reliance on them will keep growing. With the continuous development of computer technology, the virus has become increasingly complex and senior, the new generation of computer viruses make full use of certain commonly used operating systems and application software for protection of the weak low spots have rampant in recent years as the popularity of the Internet in the world, will be attached document containing the virus the situation in the mail has been increasingspread of the virus through the Internet, making the spread of the virus speed Sharp also increased, by an ever-increasing scope of the infection. Therefore, the protection of the security of computer networks will become increasingly important.First,a computer virusA computer virus the definition of computer virus computer virus (Computer Virus) in the "people's republic of China the computer information system security protection regulations "which has beenclearly defined, the virus" refers to the preparation or computerprogram inserted in the damage or destruction of computer data functions, affecting computer use Self-replication and can a group of computer instructions, or code. "Second, network virusWith the development of network and the Internet, a wider spread,the greater New harm the virus emerged this is the Internet virus. The virus is an emerging concept in the traditional the virus was not classified network virus this concept, because the development of networks, the traditional virus the network also has a number of characteristics. Today's Internet virus is a broad notion of as a longas it is carried out using the Internet to spread destruction can be known as network viruses, such as: "Love the back door", "Panda burning incense."Third, network virus and the distinction between computer virusThe original common computer virus is nothing more than the devastating formatted hard drive, delete system with the users documents, databases, etc.destruction. The mode of transmission is through nothing but also by virus infection mutual copy of the software, carrying the virus, such as the use of pirated optical discs, such as infection disk systems the pilot virus and infected executable file virus, in addition to a network virus these are the common characteristics of the virus,but also steal users with remote data, remote control of the other side computers and other damaged properties, such as Trojan and consumptionof funding the operation of the network computer source collapse of the network server worm.Fourth, the network against virusNetwork destructive virus, will directly affect the work of the network, ranging from lowering speed video ring for the efficiency of the network, while in the collapse, undermining the server information to a multi-year work destroyed Dan. Because viruses and other network annually fraud led to economic losses of over 16 billion yuan, But this figure is constantly rising year by year. The next few years, the size of the market will reach Security 60 billion yuan. One antivirus software experts pointed out: "Network avian flu virus even more." Such as: "Xiong Cat burning incense "In addition to virus infection through the web site users, the latest virus also through QQ Loopholes in propagating itself through file-sharing networks, the default sharing, weak password systems, U disk and windows forms bottom of the top mobile hard drives, and other means of communication. While LAN once a computer machine for infection, it can spread through the entire network instant, or even within a very short period of time can be infected thousands of computers, can lead to serious networks. Symptoms of poisoning in the performance of computers there are enforceable. Exe files have become a strange pattern, the pattern shown as "Panda Burning incense, "and then System blue screen, restart the frequent, hard drive data destruction, serious entire company all computer LAN will all poisoning. "Panda burning incense," only more than half a month, a few varieties have highof more than 50, and the number of its users infected constantly expanding. Makes infected, "Panda burn incense" disease the personaldrug users has been as high as several million people infected with afew more corporate users is rising exponentially. Network more on the computer network the greater the harm caused by the virus.Fifth, Network transmission of the virus Features1. Infection fast: single machine environment, the virus can only be passed fromone computer diskette to another, and in the network can be adoptedby the rapid spread of network communication mechanism. According to measurement set against a typical PC network use in normal circumstances, once a computer workstation sick drugs, and will be online within 10 minutes in the several hundreds of all infected computers.2. Proliferation of a wide range: in the network due to the spreadof the virus very quickly and spread to encompass a large area, not only the rapid transmission of all LAN computer, but also through remote workstations virus in moment inter spreadto thousands of miles away.3. Dissemination in the form of complex and varied: computer viruses in general through the network " Station server workstation "channels of communication, but in the form of complex and diverse communication.4. Difficult to completely wipe: the standalone computer viruscarriers sometimes can be deleted documents or low-level formatted drives, and other measures to eliminate the virus completely, and thenetwork once a computer work clean stations failed to disinfect the entire network can be re-infected by the virus, or even just completed removal the work of a workstation is likely to be on-line by another workstation virus infection. Therefore, Only workstations in addition to killing viruses, and can not solve the virus harm to the network is.中文译文计算机网络病毒与防范随着各种新的网络技术的不断应用和迅速发展, 计算机网络的应用范围变得越来越广泛, 所起的作用越来越重要, 计算机网络与人类的生活更加密不可分, 社会对其的依赖程度也会随之不断增长。