外文参考资料及译文
外文原文及译文--模板
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have phone, mail, and computer technology.interaction versus direct means are empirically examined across 15 different financial products and services .A significant variation was found in consumer preferences across different financial products and services, and the profiles of consumers are developed based on their preferences. Implications are drawn for developing customer-oriented market ing strategies, acknowledging customers’ differences in their preferences toward human interaction and self-service technology.IntroductionDue to rapid advances in technology within the last 30 years, the financial services sector has moved from “face -to-face” selling to direct marketing of products and services in the form of phone, mail, or computer transactions (Federal Reserve Board, 1997). There has been awareness within the industry that certain consumers are receptive to this newer way of marketing financial services, while others prefer personal interaction.......资料来源: .ezprxy .au_2048Insight_0750160304.pdf外文译文关键词银行,直销,金融服务,科技,自助服务摘要 今天的金融服务机构也从原来的传统的面对面的销售,以直接的销售手法,包括电究了全国15金融产品和服务,导言由于技术的突飞猛进,在过去30年中,金融服务业已经从“面对面”的销售对象直接在市场上销售的产品和服务的形式,电话,邮件,或电脑交易(联邦储备局,1997年)。
毕业论文英文参考文献与译文
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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。
外文参考文献译文及原文【范本模板】
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广东工业大学华立学院本科毕业设计(论文)外文参考文献译文及原文系部城建学部专业土木工程年级 2011级班级名称 11土木工程9班学号 23031109000学生姓名刘林指导教师卢集富2015 年5 月目录一、项目成本管理与控制 0二、Project Budget Monitor and Control (1)三、施工阶段承包商在控制施工成本方面所扮演的作用 (2)四、The Contractor’s Role in Building Cost Reduction After Design (4)一、外文文献译文(1)项目成本管理与控制随着市场竞争的激烈性越来越大,在每一个项目中,进行成本控制越发重要。
本文论述了在施工阶段,项目经理如何成功地控制项目预算成本。
本文讨论了很多方法。
它表明,要取得成功,项目经理必须关注这些成功的方法.1。
简介调查显示,大多数项目会碰到超出预算的问……功控制预算成本.2.项目控制和监测的概念和目的Erel and Raz (2000)指出项目控制周期包括测量成……原因以及决定纠偏措施并采取行动。
监控的目的就是纠偏措施的。
.。
标范围内。
3.建立一个有效的控制体系为了实现预算成本的目标,项目管理者需要建立一……被监测和控制是非常有帮助的。
项目成功与良好的沟通密。
决( Diallo and Thuillier, 2005).4.成本费用的检测和控制4.1对检测的优先顺序进行排序在施工阶段,很多施工活动是基于原来的计……用完了。
第四,项目管理者应该检测高风险活动,高风险活动最有。
..重要(Cotterell and Hughes, 1995)。
4.2成本控制的方法一个项目的主要费用包括员工成本、材料成本以及工期延误的成本。
为了控制这些成本费用,项目管理者首先应该建立一个成本控制系统:a)为财务数据的管理和分析工作落实责任人员b)确保按照项目的结构来合理分配所有的……它的变化-—在成本控制线上准确地记录所有恰..。
外文参考文献及翻译稿的要求与格式
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百度文库- 让每个人平等地提升自我!外文参考文献及翻译稿的要求及格式一、外文参考文献的要求1、外文原稿应与本研究项目接近或相关联;2、外文原稿可选择相关文章或节选章节,正文字数不少于1500字。
3、格式:外文文献左上角标注“外文参考资料”字样,小四宋体。
1.5倍行距。
标题:三号,Times New Roman字体加粗,居中,行距1.5倍。
段前段后空一行。
作者(居中)及正文:小四号,Times New Roman字体,首行空2字符。
4、A4纸统一打印。
二、中文翻译稿1、中文翻译稿要与外文文献匹配,翻译要正确;2、中文翻译稿另起一页;3、格式:左上角标“中文译文”,小四宋体。
标题:宋体三号加粗居中,行距1.5倍。
段前、段后空一行。
作者(居中)及正文:小四号宋体,数字等Times New Roman字体,1.5倍行距,首行空2字符。
正文字数1500左右。
4、A4纸统一打印。
格式范例如后所示。
百度文库 - 让每个人平等地提升自我!外文参考文献Implementation of internal controls of small andmedium-sized pow erStephen Ryan The enterprise internal control carries out the strength to refer to the enterprise internal control system execution ability and dynamics, it is the one whole set behavior and the technical system, is unique competitive advantage which the enterprise has; Is a series of …………………………标题:三号,Times New Roman字体加粗,居中,行距1.5倍。
外文文献翻译(图片版)
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本科毕业论文外文参考文献译文及原文学院经济与贸易学院专业经济学(贸易方向)年级班别2007级 1 班学号3207004154学生姓名欧阳倩指导教师童雪晖2010 年 6 月 3 日目录1 外文文献译文(一)中国银行业的改革和盈利能力(第1、2、4部分) (1)2 外文文献原文(一)CHINA’S BANKING REFORM AND PROFITABILITY(Part 1、2、4) (9)1概述世界银行(1997年)曾声称,中国的金融业是其经济的软肋。
当一国的经济增长的可持续性岌岌可危的时候,金融业的改革一直被认为是提高资金使用效率和消费型经济增长重新走向平衡的必要(Lardy,1998年,Prasad,2007年)。
事实上,不久前,中国的国有银行被视为“技术上破产”,它们的生存需要依靠充裕的国家流动资金。
但是,在银行改革开展以来,最近,强劲的盈利能力已恢复到国有商业银行的水平。
但自从中国的国有银行在不久之前已经走上了改革的道路,它可能过早宣布银行业的改革尚未取得完全的胜利。
此外,其坚实的财务表现虽然强劲,但不可持续增长。
随着经济增长在2008年全球经济衰退得带动下已经开始软化,银行预计将在一个比以前更加困难的经济形势下探索。
本文的目的不是要评价银行业改革对银行业绩的影响,这在一个完整的信贷周期后更好解决。
相反,我们的目标是通过审查改革的进展和银行改革战略,并分析其近期改革后的强劲的财务表现,但是这不能完全从迄今所进行的改革努力分离。
本文有三个部分。
在第二节中,我们回顾了中国的大型国有银行改革的战略,以及其执行情况,这是中国银行业改革的主要目标。
第三节中分析了2007年的财务表现集中在那些在市场上拥有浮动股份的四大国有商业银行:中国工商银行(工商银行),中国建设银行(建行),对中国银行(中银)和交通银行(交通银行)。
引人注目的是中国农业银行,它仍然处于重组上市过程中得适当时候的后期。
第四节总结一个对银行绩效评估。
外文资料原件或复印件及译文
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外文资料原件或复印件及译文1、原文部分:Cyclone IntroductionThe CycloneTM field programmable gate array family is based on a 1.5-V, 0.13-μm, all-layer copper SRAM process, with densities up to 20,060 logicelements (LEs) and up to 288 Kbits of RAM. With features like phaselocked loops (PLLs) for clocking and a dedicated double data rate (DDR) interface to meet DDR SDRAM and fast cycle RAM (FCRAM) memory requirements, Cyclone devices are a cost-effective solution for data-path applications. Cyclone devices support various I/O standards, including LVDS at data rates up to 640 megabits per second (Mbps), and 66- and 33-MHz, 64- and 32-bit peripheral component interconnect (PCI), for interfacing with and supporting ASSP and ASIC devices. Altera also offers new low-cost serial configuration devices to configure Cyclone devices.FeaturesThe Cyclone device family offers the following features:■ 2,910 to 20,060 LEs, see Table 1–1■ Up to 294,912 RAM bits (36,864 bytes)■ Supports configuration through low-cost serial configuration device■ Support for LVTTL, LVCMOS, SSTL-2, and SSTL-3 I/O standards■ Support for 66- and 33-MHz, 64- and 32-bit PCI standard■ High-speed (640 Mbps) LVDS I/O support■ Low-speed (311 Mbps) LVDS I/O support■ 311-Mbps RSDS I/O support■Up to eight global clock lines with six clock resources available per logic array block (LAB) row■Support for external memory, including DDR SDRAM (133 MHz), FCRAM, and single data rate (SDR) SDRAMDescriptionCyclone devices contain a two-dimensional row- and column-based architecture to implement custom logic. Column and row interconnects of varying speeds provide signal interconnects between LABs and embedded memory blocks. The logic array consists of LABs, with 10 LEs in each LAB. An LE is a small unit of logic providing efficient implementation of user logic functions. LABs are grouped into rows and columns across the device. Cyclone devices range between 2,910 to 20,060 LEs. M4K RAM blocks are true dual-port memory blocks with 4K bits of memory plus parity (4,608 bits). These blocks provide dedicated true dual-port, simple dual-port, or single-port memory up to 36-bits wide at up to 250 MHz. These blocks are grouped into columns across the device in between certain LABs. Cyclone devices offer between 60 to 288 Kbits of embedded RAM. Each Cyclone device I/O pin is fed by an I/O element(IOE) located at the ends of LAB rows and columns around the periphery of the device. I/O pins support various single-ended and differential I/O standards, such as the 66- and 33-MHz, 64- and 32-bit PCI standard and the LVDS I/O standard at up to 640 Mbps. Each IOE contains a bidirectional I/O buffer and three registers for registering input, output, and output-enable signals.Dual-purpose DQS, DQ, and DM pins along with delay chains (used to phase-align DDR signals) provide interface support with external memory devices such as DDR SDRAM, and FCRAM devices at up to 133 MHz (266 Mbps). Cyclone devices provide a global clock network and up to two PLLs. The global clock network consists of eight global clock lines that drive throughout the entire device. The global clock network can provide clocks for all resources within the device, such as IOEs, LEs, and memory blocks. The global clock lines can also be used for control signals. Cyclone PLLs provide general-purpose clocking with clock multiplication and phase shifting as well as external outputs for high-speed differential I/O support.2、译文部分:飓风系列芯片介绍:飓风系列可编程芯片核心电压 1.5V,采用0.13um制程,全铜工艺, 集成20,060个逻辑单元,并且内置288 K RAM空间。
外文参考文献译文及原文
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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。
外文原文及译文
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外文原文及译文一、外文原文Subject:Financial Analysis with the DuPont Ratio: A UsefulCompassDerivation:Steven C. Isberg, Ph.D.Financial Analysis and the Changing Role of Credit ProfessionalsIn today's dynamic business environment, it is important for credit professionals to be prepared to apply their skills both within and outside the specific credit management function. Credit executives may be called upon to provide insights regarding issues such as strategic financial planning, measuring the success of a business strategy or determining the viability of an acquisition candidate. Even so, the normal duties involved in credit assessment and management call for the credit manager to be equipped to conduct financial analysis in a rapid and meaningful way.Financial statement analysis is employed for a variety of reasons. Outside investors are seeking information as to the long run viability of a business and its prospects for providing an adequate return in consideration of the risks being taken. Creditors desire to know whether a potential borrower or customer can service loans being made. Internal analysts and management utilize financial statement analysis as a means to monitor the outcome of policy decisions, predict future performance targets, develop investment strategies, and assess capital needs. As the role of the credit manager is expanded cross-functionally, he or she may be required to answer the call to conduct financial statement analysis under any of these circumstances. The DuPont ratio is a useful tool in providing both an overview and a focus for such analysis.A comprehensive financial statement analysis will provide insights as to a firm's performance and/or standing in the areas of liquidity, leverage, operating efficiency and profitability. A complete analysis will involve both time series and cross-sectional perspectives. Time series analysis will examine trends using the firm's own performance as a benchmark. Cross sectional analysis will augment the process by using external performance benchmarks for comparison purposes. Every meaningful analysis will begin with a qualitative inquiry as to the strategy and policies of the subject company, creating a context for the investigation. Next, goals and objectives of the analysis will be established, providing a basis for interpreting the results. The DuPont ratio can be used as a compass in this process by directing the analyst toward significant areas of strength and weakness evident in the financial statements.The DuPont ratio is calculated as follows:ROE = (Net Income/Sales) X (Sales/Average Assets) X (Average Assets/Avenge Equity)The ratio provides measures in three of the four key areas of analysis, eachrepresenting a compass bearing, pointing the way to the next stage of the investigation.The DuPont Ratio DecompositionThe DuPont ratio is a good place to begin a financial statement analysis because it measures the return on equity (ROE). A for-profit business exists to create wealth for its owner(s). ROE is, therefore, arguably the most important of the key ratios, since it indicates the rate at which owner wealth is increasing. While the DuPont analysis is not an adequate replacement for detailed financial analysis, it provides an excellent snapshot and starting point, as will be seen below.The three components of the DuPont ratio, as represented in equation, cover the areas of profitability, operating efficiency and leverage. In the following paragraphs, we examine the meaning of each of these components by calculating and comparing the DuPont ratio using the financial statements and industry standards for Atlantic Aquatic Equipment, Inc. (Exhibits 1, 2, and 3), a retailer of water sporting goods.Profitability: Net Profit Margin (NPM: Net Income/Sales)Profitability ratios measure the rate at which either sales or capital is converted into profits at different levels of the operation. The most common are gross, operating and net profitability, which describe performance at different activity levels. Of the three, net profitability is the most comprehensive since it uses the bottom line net income in its measure.A proper analysis of this ratio would include at least three to five years of trend and cross-sectional comparison data. The cross sectional comparison can be drawn from a variety of sources. Most common are the Dun & Bradstreet Index of Key Financial Ratios and the Robert Morris Associates (RMA) Annual Statement Studies. Each of these volumes provide key ratios estimated for business establishments grouped according to industry (i.e., SIC codes). More will be discussed in regard to comparisons as our example is continued below. As is, over the two years, Whitbread has become less profitable.Leverage: The Leverage Multiplier (Average Assets/Average Equity)Leverage ratios measure the extent to which a company relies on debt financing in its capital structure. Debt is both beneficial and costly to a firm. The cost of debt is lower thanthe cost of equity, an effect which is enhanced by the tax deductibility of interest payments in contrast to taxable dividend payments and stock repurchases. If debt proceeds are invested in projects which return more than the cost of debt, owners keep the residual, and hence, the return on equity is "leveraged up." The debt sword, however, cuts both ways. Adding debt creates a fixed payment required of the firm whether or not it is earning an operating profit, and therefore, payments may cut into the equity base. Further, the risk of the equity position is increased by the presence of debt holders having a superior claim to the assets of the firm.二、译文题目:杜邦分析体系出处:史蒂文c Isberg运输研究所硕士论文杜邦分析体系财务分析与专业信用人员的角色转变在当今动态商业环境中,信贷的专业人士申请内部外部的特定信贷管理职能的技能非常重要。
盈利能力外文资料翻译译文
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盈利能力外文资料翻译译文XXX has always been one of the XXX。
Capital structure is related to a company's funding costs。
financial risks。
and profitability。
and funding costs and financial risks XXX een a company's capital structure and profitability is not us。
but increasing a company's long-term debt-to-equity。
XXX.The funding costs of long-XXX taxes。
a company's actual capital cost is lower than the rate of return demanded by creditors。
The cost of debt capital is mainly determined by the company's financial structure。
debt repayment ability。
operating cash flow。
operating ability。
operating efficiency。
market interest rates。
and current market economic XXX nary effects。
and the return XXX。
Long-term debt has a greater impact on a company's operating XXX。
and long-term debt faces greater credit default risk。
毕业设计(论文)外文原文及译文
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毕业设计(论文)外文原文及译文一、外文原文MCUA microcontroller (or MCU) is a computer-on-a-chip. It is a type of microcontroller emphasizing self-sufficiency and cost-effectiveness, in contrast to a general-purpose microprocessor (the kind used in a PC).With the development of technology and control systems in a wide range of applications, as well as equipment to small and intelligent development, as one of the single-chip high-tech for its small size, powerful, low cost, and other advantages of the use of flexible, show a strong vitality. It is generally better compared to the integrated circuit of anti-interference ability, the environmental temperature and humidity have better adaptability, can be stable under the conditions in the industrial. And single-chip widely used in a variety of instruments and meters, so that intelligent instrumentation and improves their measurement speed and measurement accuracy, to strengthen control functions. In short,with the advent of the information age, traditional single- chip inherent structural weaknesses, so that it show a lot of drawbacks. The speed, scale, performance indicators, such as users increasingly difficult to meet the needs of the development of single-chip chipset, upgrades are faced with new challenges.The Description of AT89S52The AT89S52 is a low-power, high-performance CMOS 8-bit microcontroller with 8K bytes of In-System Programmable Flash memory. The device is manufactured using Atmel's high-density nonvolatile memory technology and is compatible with the industry-standard 80C51 instruction set and pinout. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with In-System Programmable Flash on a monolithic chip, the Atmel AT89S52 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications.The AT89S52 provides the following standard features: 8K bytes ofFlash, 256 bytes of RAM, 32 I/O lines, Watchdog timer, two data pointers, three 16-bit timer/counters, a six-vector two-level interrupt architecture, a full duplex serial port, on-chip oscillator, and clock circuitry. In addition, the AT89S52 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port, and interrupt system to continue functioning. The Power-down mode saves the RAM contents but freezes the oscillator, disabling all other chip functions until the next interrupt or hardware reset.Features• Compatible with MCS-51® Products• 8K Bytes of In-System Programmable (ISP) Flash Memory– Endurance: 1000 Write/Erase Cycles• 4.0V to 5.5V Operating Range• Fully Static Operation: 0 Hz to 33 MHz• Three-level Program Memory Lock• 256 x 8-bit Internal RAM• 32 Programmable I/O Lines• Three 16-bit Timer/Counters• Eight Interrupt Sources• Full Duplex UART Serial Channel• Low-power Idle and Power-down Modes• Interrupt Recovery from Power-down Mode• Watchdog Timer• Dual Data Pointer• Power-off FlagPin DescriptionVCCSupply voltage.GNDGround.Port 0Port 0 is an 8-bit open drain bidirectional I/O port. As an output port, each pin can sink eight TTL inputs. When 1s are written to port 0 pins, the pins can be used as high-impedance inputs.Port 0 can also be configured to be the multiplexed low-order address/data bus during accesses to external program and data memory. In this mode, P0 has internal pullups.Port 0 also receives the code bytes during Flash programming and outputs the code bytes during program verification. External pullups are required during program verification.Port 1Port 1 is an 8-bit bidirectional I/O port with internal pullups. The Port 1 output buffers can sink/source four TTL inputs. When 1s are written to Port 1 pins, they are pulled high by the internal pullups and can be used as inputs. As inputs, Port 1 pins that are externally being pulled low will source current (IIL) because of the internal pullups.In addition, P1.0 and P1.1 can be configured to be the timer/counter 2 external count input (P1.0/T2) and the timer/counter 2 trigger input (P1.1/T2EX), respectively.Port 1 also receives the low-order address bytes during Flash programming and verification.Port 2Port 2 is an 8-bit bidirectional I/O port with internal pullups. The Port 2 output buffers can sink/source four TTL inputs. When 1s are written to Port 2 pins, they are pulled high by the internal pullups and can be used as inputs. As inputs, Port 2 pins that are externally being pulled low will source current (IIL) because of the internal pullups.Port 2 emits the high-order address byte during fetches from external program memory and during accesses to external data memory that use 16-bit addresses (MOVX @ DPTR). In this application, Port 2 uses strong internal pull-ups when emitting 1s. During accesses to external data memory that use 8-bit addresses (MOVX @ RI), Port 2 emits the contents of the P2 Special Function Register.Port 2 also receives the high-order address bits and some control signals during Flash programming and verification.Port 3Port 3 is an 8-bit bidirectional I/O port with internal pullups. The Port 3 output buffers can sink/source four TTL inputs. When 1s are written to Port 3 pins, they are pulled high by the internal pullups and can be used as inputs. As inputs, Port 3 pins that are externally being pulled low will source current (IIL) because of the pullups.Port 3 also serves the functions of various special features of the AT89S52, as shown in the following table.Port 3 also receives some control signals for Flash programming and verification.RSTReset input. A high on this pin for two machine cycles while the oscillator is running resets the device. This pin drives High for 96 oscillator periods after the Watchdog times out. The DISRTO bit in SFR AUXR (address 8EH) can be used to disable this feature. In the default state of bit DISRTO, the RESET HIGH out feature is enabled.ALE/PROGAddress Latch Enable (ALE) is an output pulse for latching the low byte of the address during accesses to external memory. This pin is also the program pulse input (PROG) during Flash programming.In normal operation, ALE is emitted at a constant rate of 1/6 the oscillator frequency and may be used for external timing or clocking purposes. Note, however, that one ALE pulse is skipped during each access to external data memory.If desired, ALE operation can be disabled by setting bit 0 of SFR location 8EH. With the bit set, ALE is active only during a MOVX or MOVC instruction. Otherwise, the pin is weakly pulled high. Setting the ALE-disable bit has no effect if the microcontroller is in external execution mode.PSENProgram Store Enable (PSEN) is the read strobe to external program memory. When the AT89S52 is executing code from external program memory, PSENis activated twice each machine cycle, except that two PSEN activations are skipped during each access to external data memory.EA/VPPExternal Access Enable. EA must be strapped to GND in order to enable the device to fetch code from external program memory locations starting at 0000H up to FFFFH. Note, however, that if lock bit 1 is programmed, EA will be internally latched on reset. EA should be strapped to VCC for internal program executions.This pin also receives the 12-volt programming enable voltage (VPP) during Flash programming.XTAL1Input to the inverting oscillator amplifier and input to the internal clock operating circuit.XTAL2Output from the inverting oscillator amplifier.Special Function RegistersNote that not all of the addresses are occupied, and unoccupied addresses may not be implemented on the chip. Read accesses to these addresses will in general return random data, and write accesses will have an indeterminate effect.User software should not write 1s to these unlisted locations, since they may be used in future products to invoke new features. In that case, the reset or inactive values of the new bits will always be 0.Timer 2 Registers:Control and status bits are contained in registers T2CON and T2MOD for Timer 2. The register pair (RCAP2H, RCAP2L) are the Capture/Reload registers for Timer 2 in 16-bit capture mode or 16-bit auto-reload mode.Interrupt Registers:The individual interrupt enable bits are in the IE register. Two priorities can be set for each of the six interrupt sources in the IP register.Dual Data Pointer Registers: To facilitate accessing both internal and external data memory, two banks of 16-bit Data Pointer Registers areprovided: DP0 at SFR address locations 82H-83H and DP1 at 84H-85H. Bit DPS = 0 in SFR AUXR1 selects DP0 and DPS = 1 selects DP1. The user should always initialize the DPS bit to the appropriate value before accessing the respective Data Pointer Register.Power Off Flag:The Power Off Flag (POF) is located at bit 4 (PCON.4) in the PCON SFR. POF is set to “1” during power up. It can be set and rest under software control and is not affected by reset.Memory OrganizationMCS-51 devices have a separate address space for Program and Data Memory. Up to 64K bytes each of external Program and Data Memory can be addressed.Program MemoryIf the EA pin is connected to GND, all program fetches are directed to external memory. On the AT89S52, if EA is connected to VCC, program fetches to addresses 0000H through 1FFFH are directed to internal memory and fetches to addresses 2000H through FFFFH are to external memory.Data MemoryThe AT89S52 implements 256 bytes of on-chip RAM. The upper 128 bytes occupy a parallel address space to the Special Function Registers. This means that the upper 128 bytes have the same addresses as the SFR space but are physically separate from SFR space.When an instruction accesses an internal location above address 7FH, the address mode used in the instruction specifies whether the CPU accesses the upper 128 bytes of RAM or the SFR space. Instructions which use direct addressing access of the SFR space. For example, the following direct addressing instruction accesses the SFR at location 0A0H (which is P2).MOV 0A0H, #dataInstructions that use indirect addressing access the upper 128 bytes of RAM. For example, the following indirect addressing instruction, where R0 contains 0A0H, accesses the data byte at address 0A0H, rather than P2 (whose address is 0A0H).MOV @R0, #dataNote that stack operations are examples of indirect addressing, so the upper 128 bytes of data RAM are available as stack space.Timer 0 and 1Timer 0 and Timer 1 in the AT89S52 operate the same way as Timer 0 and Timer 1 in the AT89C51 and AT89C52.Timer 2Timer 2 is a 16-bit Timer/Counter that can operate as either a timer or an event counter. The type of operation is selected by bit C/T2 in the SFR T2CON (shown in Table 2). Timer 2 has three operating modes: capture, auto-reload (up or down counting), and baud rate generator. The modes are selected by bits in T2CON.Timer 2 consists of two 8-bit registers, TH2 and TL2. In the Timer function, the TL2 register is incremented every machine cycle. Since a machine cycle consists of 12 oscillator periods, the count rate is 1/12 of the oscillator frequency.In the Counter function, the register is incremented in response to a1-to-0 transition at its corresponding external input pin, T2. In this function, the external input is sampled during S5P2 of every machine cycle. When the samples show a high in one cycle and a low in the next cycle, the count is incremented. The new count value appears in the register during S3P1 of the cycle following the one in which the transition was detected. Since two machine cycles (24 oscillator periods) are required to recognize a 1-to-0 transition, the maximum count rate is 1/24 of the oscillator frequency. To ensure that a given level is sampled at least once before it changes, the level should be held for at least one full machine cycle.InterruptsThe AT89S52 has a total of six interrupt vectors: two external interrupts (INT0 and INT1), three timer interrupts (Timers 0, 1, and 2), and the serial port interrupt. These interrupts are all shown in Figure 10.Each of these interrupt sources can be individually enabled or disabledby setting or clearing a bit in Special Function Register IE. IE also contains a global disable bit, EA, which disables all interrupts at once.Note that Table 5 shows that bit position IE.6 is unimplemented. In the AT89S52, bit position IE.5 is also unimplemented. User software should not write 1s to these bit positions, since they may be used in future AT89 products. Timer 2 interrupt is generated by the logical OR of bits TF2 and EXF2 in register T2CON. Neither of these flags is cleared by hardware when the service routine is vectored to. In fact, the service routine may have to determine whether it was TF2 or EXF2 that generated the interrupt, and that bit will have to be cleared in software.The Timer 0 and Timer 1 flags, TF0 and TF1, are set at S5P2 of the cycle in which the timers overflow. The values are then polled by the circuitry in the next cycle. However, the Timer 2 flag, TF2, is set at S2P2 and is polled in the same cycle in which the timer overflows.二、译文单片机单片机即微型计算机,是把中央处理器、存储器、定时/计数器、输入输出接口都集成在一块集成电路芯片上的微型计算机。
外文文献译文——参考范例
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本科毕业设计(论文)外文参考文献译文及原文学院自动化学院专业电气工程及其自动化(电力系统自动化方向)年级班别2011级3班学号学生姓名指导教师2015年3月10日通过对磁场的分析改进超高压变电站扩展连接器的设计Joan Hernández-Guiteras a, Jordi-Roger Ribaa,⇑, LuísRomeralba UniversitatPolitècnica de Catalunya, Electrical Engineering Department, 08222 Terrassa, Spainb UniversitatPolitècnica de Catalunya, Electronic Engineering Department, 08222 Terrassa, Spain摘要:在世界上很多的国家,电力需求的增长比输电容量的发展更快。
由于环境的限制、社会的担忧以及经济上的投入,建设新的输电线路是一项严峻的挑战。
除此以外,输电网经常要承担接近额定容量的负载。
因此,提高输电系统的效率和可靠性受到了关注。
这项研究主要针对一个400KV,3000A,50Hz的超高压变电站扩展连接器,用于连接两个母线直径均为150mm的变电站。
该变电站连接器是一个四线制的铝导线,为母线之间的相互电能传输提供了路径。
前期的初步试验显示:电流在输电线路中的不平衡分布,主要是受到了距离的影响。
应用一个三维的有限元素法,可以改进设计,以及对改进前后两个版本的连接器的电磁性能和热性能进行评估比较。
这份报告中将提出:在实验室条件下的检验已经验证了仿真方法的准确性。
这也许将会是促进变电站连接器设计进程的一个很有价值的工具。
因此,将不仅仅提高其热性能,还将提高其可靠性。
关键词:变电站连接器、超高压、电力传输系统、有限单元法、数值模拟、临近效应、热学分析1.引入全球能源需求的频繁增长,连同分散的和可再生能源份额的增长促进超高压和特高压电力传输系统[1]的建设和研究。
外文文献原稿和译文
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外文文献原稿和译文燕京理工学院毕业设计外文原稿和疑问模板及格式(空一行)原□□稿(空一行)正文内容:新罗马“TimesNewRoman”字体,小四号字。
段落设置为:固定值,22磅,段前、段后均为0磅。
The “jumping off" point for this paper is Reengineering the Corporation, by Michael successes or failures, examines case studies, and presents alternatives to "classical" reengineering theory. The paper pays particular attention to the role of information technology in BPR. Inconclusion, the paper offers somespecific recommendations regarding reengineering. Old Wine in New BottlesThe concept of reengineering traces its origins back to management theories developed as early as the nineteenth century. The purpose of reengineering is to "make all your processes the best-in-class." Frederick Taylor suggested in the 1880's that managers use process reengineering methods to discover the best processes for performing work, and that these processes be reengineered to optimize productivity. BPR echoes the classical belief that there is one best way to conduct tasks. In Taylor's time, technology did not allow large companies to design processes in across-functional or cross-departmental manner. Specialization was the state-of-theart method to improve efficiency given the technology of the time.(下略)1燕京理工学院毕业设计外文原稿和疑问模板及格式译□□文正文内容:宋体,小四号字。
外文资料原文及译文
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外文资料原文及译文南通大学法政与管理学院2009年06月HOW DO THE CHINESE PERCEIVE HARMONIOUSCORPORATE CULTURE:An Empirical Study on Dimensions of Harmonious Corporate CultureLianke SONG,Hao YANG,Lan YANGABSTRACT The Sixth Plenary Session of the 16th Central Committee of the Communist Party of China points out creating harmonious culture is an important task for building socialist harmonious society. Building harmonious culture needs all companies to create harmonious culture, because a company is a basic social unit. Henceforth, many Chinese companies advocate building harmonious corporate culture. Scholars must study basic theories for harmonious corporate culture. This study tried to answer two questions: What is harmonious corporate culture in Chinese mind and how do different Chinese perceive harmonious corporate culture? Firstly, this paper analyzed background of harmonious corporate culture from Chinese traditional culture and era needs. Secondly, authors designed an open-ended questionnaire and sent them to employees in Jiangsu and Shanghai. 329 questionnaires were collected and 291 questionnaires were valid, representing a response rate of 88.45%. Thirdly, this study explored dimensions of harmonious corporate culture and identified different viewpoints from different group. Finally, this paper discussed the results and pointed out limitations of this study and future research. The results of this paper were on basis of defining, measuring, analyzing, and creating harmonious corporate culture.1. THEORETICAL BACKGROUND AND QUESTIONSThe Fourth Plenary Session of the 16th Central Committee of the Communist Party of China puts forward building socialist harmonious societies and the sixth plenary session of the 16th central committee of the communist party of China points out creating harmonious culture is an important task for building socialist harmonious society. Building harmonious culture needs all companies to create harmonious culture, because a company is a basic social unit[1].Why do Chinese corporations advocate harmonious corporate culture? Maybe Chinese traditional culture and era needs are responsible.Chinese philosophy has a history of several thousand years. Its origins are often traced back to the Book of Changs (yi jing), which introduced some of the most fundamental terms of Chinese philosophy. Its first flowering is generally considered to have been in about the 6th century BC, but it draws on an oral tradition that goes back to Neolithic times.The Tao Te Ching (dao de jing) of Lao Tzu (lao zi) and the Analects (lun yu)of Confucius (kong zi) both appeared around the 6th century BC, around the time of early Buddhist philosophy.Confucianism focuses on the fields of ethics and politics, emphasizing personal and governmental morality, correctness of social relationships, justice, traditionalism, and sincerity. Confucianism and legalism are responsible for creating the world’s first meritocracy. Confucianism was and continues to be a major influence on Chinese culture. Harmonious culture is meant to respect the tradition of established virtue under Confucius upon "harmony with differences" while exploring extensively our cultural resources and cultural ideas or beliefs.The Chinese schools of philosophy, except during the Qin Dynasty, can be both critical and tolerant of one another. Despite the debates and competition, they generally have cooperated and shared ideas, which they would usually incorporate with their own.Harmony was a central concept in Chinese ancient philosophy. Confucian, Taoist, Buddhist and Legalist that are the major Chinese traditions all prize “harmony” as an ultimate value, but they disagree on how to achieve it. Confucians in particular emphasize the single-character term for “harmony” (he), which appears in all of Confucianism’s “Four Books and Five Classics” (si shu wu jing). The most forceful articulation of identification of personal and communal harmony comes from the Doctrine of the Mean (zhong yong), which defines harmony as a state of equilibriumw here pleasure, anger, sorrow and joy are moderated and restrained, claiming “all things in the universe to attain the way”.During the Industrial and Modern Ages, Chinese philosophy began to integrate the concepts of Western philosophy. Chinese philosophy attempted to incorporate democracy, republicanism and industrialism. Mao Zedong added Marxism, Stalinism and other communist thoughts. The government of the People’s Republic of China initiates Socialism with Chinese Characteristics.The theoretical bases of harmonious socialist society are Marxism-Leninism, Mao Zedong Thoughts, Deng Xiaoping Theory, and the important thought of "Three Represents" (That is, the CPC must always represent the development trend of China's advanced productive forces, the orientation of China's advanced culture, and the fundamental interests of the overwhelming majority of the people in China.).Six main characteristics of a harmonious society are democracy and the rule of law, fairness and justice, integrity and fraternity, vitality, stability and order, and harmony between man and nature. The principles observed in building a harmonious socialist society are as the following: people oriented; development in a scientific way; in-depth reform and opening up; democracy and the rule of law; properly handling the relationships between reform, development and stability; and the participation of the whole society under the leadership of the Party.The authors tried to define harmonious corporate culture: harmonious corporate culture is the corporate culture that adheres to people-oriented principle and considers harmony as a core concept, by managing in good faith and scientific administration to achieve harmony among enterprises, society and nature, and eventually make enterprises develop harmoniously and healthily.Chinese traditional culture is the basis of harmonious corporate culture. Era need is the direction of harmonious corporate culture. “Harmonious Corporate Culture” is a new identification and is different from any existent conceptions. What is harmonious corporate culture? This study wants to answer this question by analyzing Chinese viewpoints from open-ended questionnaires.Question 1: What is harmonious corporate culture in Chinese mind?Harmonious corporate culture is a new and special conception for Chinese. General views of Chinese can be found by searching dimensions of harmonious corporate culture. In fact, different people have different ideas. Maybe there are differences among different groups, which can be classified by sex, age, education and position. This study will find and explain those differences.Question 2: How do different Chinese perceive harmonious corporate culture?Today, many Chinese companies advocate building harmonious corporate culture. Understanding conception and characters of harmonious corporate culture are very important. This paper will answer two questions which are the basis of this field.2. METHODS2.1 Sample and ProcedureThe empirical analysis was carried out in Jiangsu and Shanghai. J iangsu’s economic and social development has always been taking the lead in China. Shanghai is China’s chief industrial and commercial centre and one of its leading centres of higher education and scientific research. They both lie in center of China’s eas t coast. We can know what modern Chinese are thinking and hoping by studying employees in Jiangsu and Shanghai.Questionnaires couldn’t be counted because we used both paper version and computer version. From January 2007 to January 2008, authors sent questionnaires to employees who worked in Jiangsu and Shanghai. 329 questionnaires were returned and 291 questionnaires were valid, representing a response rate of 88.45%.Table 1 summarizes the key statistics for the sample used in the study.Table 1 Characteristics of the sample2.2 MeasuresThe authors designed an open-ended questionnaire based on the purpose of the study. This scale only used one question to collect information for answering question 1 of this study. This question is “Please use ten words or ten sentences to describe harmonious corporate culture”.3. RESULTSThis research found out that there were some similar viewpoints about harmonious corporate culture from collected questionnaires. The authors classify these viewpoints into 15 dimensions after holding 10 study group meetings. Some dimensions were identified based on China’s traditional culture and present policies. Table 2 lists 15 dimensions in English and Chinese because of some dimensions with Chinese characteristics.Table 2 Dimension and frequency of harmonious corporate cultureThis s tudy calculated dimensions’ frequencies from different groups to know different people’s ideal harmonious corporate culture. Table 3 shows statistics for male’s and female’s viewpoints on harmonious corporate culture.Table3 Frequency and order of harmonious corporate culture from female and male4. DISCUSSION AND CONCLUSION4.1 ResultsSome companies advocate building harmonious corporate culture and some companies boast that they possess harmonious corporate culture after the central government calls on all society to create harmonious culture. But what is harmonious corporate culture? Some scholars wanted toexplain it, but nobody has answered this question by empirical study. The authors answered question 1 of this study by analyzing collected data. A lot of standpoints were found, but some standpoints could be integrated as one because they possess same meaning but are described with different words. The study group held 10 meetings to discuss harmonious corporate culture dimensions based on questionnaires. Finally, 15 dimensions were identified. They are People oriented, steady development, scientific administration, vitality, stability and order, fraternity and concord, unity and cooperation, fairness and impartiality, democratic participation, managing in good faith, pursuing excellence, social responsibility, energy conservation and environmental protection, incorporating things of diverse nature, and common development and win-win situation. The result answered question 1: What is harmonious corporate culture in Chinese mind?Dimensions were arranged on frequency. People oriented ranked first. People oriented in China has three sources: Max’s study of humanity; “People first” descending from Chinese history and new anthropocentric[2]. The Chinese like speaking “people oriented” relating to Chinese traditional culture. The genesis of people oriented is traceable to the Western Zhou Dynasty and people oriented became the core thought of Confucianism which influenced the Chinese deeply. Many archaism were concerned with people oriented, such as “The pe ople are the most important element in a state; next are the gods of land and grain; least is the ruler himself[3].”(min wei gui, she ji ci zhi, jun wei qing) Many scholars also considered people oriented is the core and basis of harmonious corporate culture[4][5].This paper compared different groups’ viewpoints to answer question 2 -- how do different Chinese perceive harmonious corporate culture?People oriented, unity and cooperation, vitality, and fraternity and concord were ranked from 1 to 4 by female and male. The same results made the authors surprised. But they are different in fifth dimension. The fifth of female is democratic participation and the fifth of male is stability and order. Female status was lower than male in ancient China. Female had to comply with the three obedience and the four virtues (san cong si de) in past. The three obediences (obey her father before marriage, her husband when married, and her sons in widowhood) and the four virtues (morality, proper speech, modest manner and diligent work) of women in ancient China, which were spiritual fetters of wifely submission and virtue imposed on women in feudal society. Female status is improving after female deputy attended the first National Congress of the Communist Party ofChina. Today, Chinese female think much of the rights of women, so democratic participation is the fifth dimension. The ancient belief “Men’s work centers around outside, women’s work centers around the home[6]”(nü zheng wei hu nei, nan zheng wei hu wai) which c ame from The Book of Changes (yi jing). Man had to work hard in society to earn money and get honour for his family. Today, both man and woman work in government, company, school, hospital and so on, but man always plays a major role and assumes primary responsibility in society and at home for traditional culture. The change is fast and the competition is fierce in modern society, so man is facing great pressure. This is the reason why man hopes to live and work in a more stable environment, so stability and order is the fifth dimension.People oriented, unity and cooperation, and vitality were ranked from 1 to 3 by Managerial employee and Nonmanagerial employee. Scientific administration and democratic participation were ordered as the fourth dimension by managerial employee. Managerial employee looks deeper and thinks further than nonmanagerial employee because managerial employee is at higher level and holds more responsibility in organization. Managerial employee cares about management questions. Fraternity and concord was ordered as the fourth dimension by nonmanagerial employee. Nonmanagerial employee concerns less about enterprises’ overall operation and management state than managerial employee does. They understand harmonious corporate culture from their own specific the work and life. Nonmanagerial employee does specific task and needs direct corporation. They believe that the staffs’ civilized language and behaviours, mutual understanding, the warm atmosphere of interpersonal relationships in the enterprise are very important aspects of harmonious corporate culture. Nonmanagerial employee cares about good relationship. Generally speaking, the differences of the harmonious corporate culture dimensions understanding between managerial employee and nonmanagerial employee are closely related to their location in the organizational structure and their working content in the enterprise.People oriented was ordered as first dimension and unity and cooperation was ordered as the second dimension by all persons whatever their education background is Vitality was ordered as the third dimension by all responders except persons who got a master or doctor degree. The responders whose highest education qualification over master degree ordered scientific administration as the second dimension too. The person holding advanced academic degree has more opportunity to be promoted to managerial position, so they think scientific administration is very important in aharmonious environment. Compared with other groups,the relatively higher education group who get undergraduate degree, are more interested in stability and order, fairness and impartiality dimensions. People in this group are the middle and high-level managers in the enterprise, that is, not only they are familiar with the overall state of the enterprise, but also they understand deeply internal staffs’ living conditions characteristics. Therefore, they put more attention on stability and order, fairness and impartiality dimensions.All groups ordered people oriented, unity and cooperation, and vitality as most important three dimensions. The same results showed what core contents for harmonious corporate culture are.4.2 Limitations and Future ResearchThis study was just an exploratory study. The authors searc hed harmonious corporate culture’s dimensions by open-ended questionnaire. But the validity of these results need to be proved by more studies. The authors will design close-ended questionnaire based on this study and collect new data. Dimensions of harmonious corporate culture will be confirmed by exploratory factor analysis and confirmatory factor analysis.This paper only discussed what harmonious corporate culture is. In the future, how to create harmonious corporate culture should be studied.The authors compared viewpoints from different sex, position and education. Age, birthplace, nationality and work experience influence individual thought too. Different opinions from different groups should be identified in future study.China should act as not only the defender of Chinese culture but an explorer and promoter of the new harmonious culture. Harmony is the social theme for present China. Studying basic theory of harmonious corporate culture will contribute to our society.REFERENCES[1] Lianke SONG, Dongtao, YANG, Hao YANG. Why do companies create harmonious cultures? Comparing the influence of different corporate cultures on employees. Enterprise Management and Change in a Transitional Economy. 2008. p595-603.[2] LU Wanglin. On theoretic s ource of “human oriented” -- analyzing the scientific factor of “scientific development view” from one point of view. Hebei Academic Journal, 26 (5), 2006,p228-230.[3] Mencius. The Mencius. Warring States time.[4] Liangbo CHENG, Lincheng JING. An search on creating harmonious corporate culture. Group Economy, (17), 2007, p294-295.[5] Xiangkui GENG. Extracting kernel of Confucianism to create harmonious corporate culture. Theoretical Research, (3), 2007, p47-48.[6] The Book of Changes.中国人如何认识和谐企业文化?——关于和谐企业文化维度的实证研究宋联可杨浩杨兰摘要党的十六届六中全会指明建设和谐文化是构建社会主义和谐社会的重要任务。
公路线形设计外文文献翻译英文参考
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外文文献翻译(含:英文原文及中文译文)文献出处:Y Hassan. Geometric Design of Highways[J] Advances in Transportation Studies, 2016, 6(1):31-41.英文原文Geometric Design of HighwaysY HassanA. Alignment DesignThe alignment of a road is shown on the plane view and is a series of straight lines called tangents connected by circular curves. In modern practice it is common to interpose transition or spiral curves between tangents and circular curves.The line shape should be continuous, sudden changes from flat line to small radius curve or sudden change of long line end connected to small radius curve should be avoided, otherwise a traffic accident may occur. Similarly, arcs with different radii end-to-end (complex curves) or short straight lines between two arcs with different radii are bad lines unless an easing curve is inserted between arcs. The long, smooth curve is always a good line because it is beautifully lined and will not be abandoned in the future. However, it is not ideal that the two-way road line shape is composed entirely of curves, because some drivers always hesitate to pass through curved road segments. The long and slow curve is used in thesmaller corners. If you use a short curve, you will see "kinks." In addition, the design of the flat and vertical sections of the line should be considered comprehensively and should not be only one. No matter which, for example, when the starting point of the flat curve is near the vertex of the vertical curve, serious traffic accidents will occur.V ehicles driving on curved sections are subjected to centrifugal force, and they need a force of the same magnitude in the opposite direction due to the height and lateral friction to offset it. From the viewpoint of highway design, the high or horizontal friction cannot exceed a certain value. The maximum, these control values for a certain design speed may limit the curvature of the curve. In general, the curvature of a circular curve is represented by its radius. For the linear design, the curvature is often described by the curvature, ie, the central angle corresponding to the 100-foot curve, which is inversely proportional to the radius of the curve.A normal road arch is set in a straight section of the road, and the curve section is set to a super high, and an excessively gradual road section must be set between the normal section and the super high section. The usual practice is to maintain the design elevation of each midline of the road unchanged. By raising the outer edge and lowering the inner edge to form a super high, for the line shape where the straight line is directly connected with the circle curve, the super high should never start on the straight line before reaching the curve. At the other end of the curve at acertain distance to reach all the ultra-high.If the vehicle is driving at a high speed on a restricted section of road, such as a straight line connected with a small radius circle curve, driving will be extremely uncomfortable. When the car enters the curve section, the super high starts and the vehicle tilts inward, but the passenger must maintain the body because it is not subjected to centrifugal force at this time. When the car reaches the curve section, centrifugal force suddenly occurs, forcing passengers to make further posture adjustments. When the car leaves the curve, the above process is just the opposite. After inserting the relaxation curve, the radius gradually transitions from infinity to a certain fixed value on the circle curve, the centrifugal force gradually increases, and ultra-high levels are carefully set along the relaxation curve, and the centrifugal force is gradually increased, thereby avoiding driving bumps.The easement curve has been used on railways for many years, but it has recently been applied on highways. This is understandable. The train must follow a precise orbit, and the uncomfortable feeling mentioned above can only be eliminated after the ease curve is used. However, the driver of a car can change the lateral position on the road at will, and he can provide a relaxation curve for himself by making a roundabout curve. But doing this in one lane (sometimes in other lanes) is very dangerous. A well-designed relaxation curve makes the above roundaboutnessunnecessary. Multi-cluster safety is a measure, and roads are widely used as transition curves.For a circular curve with the same radius, adding an easing curve at the end will change the relative positions of the curve and the straight line. Therefore, whether or not to use an easing curve should be determined before final alignment survey. The starting point of the general curve is labeled PC or BC and the end point is labeled PT or EC. For curves with transition curves, the usual marker configurations are: TC, SC, CS, and ST.For two-way roads, the road width should be increased at sharp bends. This is mainly based on the following factors: 1. The driver is afraid to get out of the edge of the road. 2. Due to the difference in the driving trajectory of the front and rear wheels of the vehicle, the effective lateral width of the vehicle increases; 3. The width of the front of the vehicle that is inclined relative to the centerline of the road. For roads that are 24 feet wide, the added width is negligible. Only if the design speed is 30 mil / h and the curvature is up to 2 ft. However, for narrow roads, widening is very important even on smooth curve sections. The recommended widening values and widened designs are shown in ". Highway linear design."B. Longitudinal slope lineThe vertical alignment of the highway and its impact on the safety andeconomy of vehicle operation constitute one of the most important elements in highway design. V ertical lines consist of straight lines and vertical parabolas or circular lines called vertical slope lines. When a grade line rises gradually from a horizontal line, it is called an uphill, and vice versa, it is called a downhill slope. In the analysis of slope and slope control, designers usually have to study the effect of changes in slope on the midline profile. In determining the slope, the ideal situation is the balance of excavation and filling, and there is no large amount of borrowers and abandoned parties. All the earth moving is carried down as far as possible and the distance is not long. The slope should change with the terrain and be consistent with the direction of ascent and descent of the existing drainage system. In the mountains, the slopes should be balanced to minimize the total cost. In the plain or grassland areas, the slope is approximately parallel to the surface, but higher than the surface at a sufficient height to facilitate drainage of the surface. If necessary, winds can be used to remove surface snow. If the road is approaching or running along a river, the current height of the slope is determined by the expected flood level. In any case, the gentle slope should be set at the excavation section compared to the short vertical section connecting the short vertical curve due to the upslope downslope, and the section from the downslope upslope should be set at the fill. Road section. Such a good linear design can often avoid the formation of a mound or depressionopposite to the current landscape. Other considerations are much more important when determining the vertical slope line than when filling the balance. Study and make more detailed adjustments to advanced issues. In general, the slope of the design that is consistent with the existing conditions is better, which can avoid some unnecessary costs.In slope analysis and control, the impact of slope on motor vehicle operating costs is one of the most important considerations. As the slope increases, the fuel consumption will obviously increase and the speed will slow down. A more economical solution can balance the annual increase in the annual cost of reducing the slope and increasing the annual cost of running the vehicle without increasing the slope. The exact solution to this problem depends on the understanding of traffic flow and traffic type, which can only be known through traffic investigations.In different states, where the maximum longitudinal gradient is also very different, AASHTO recommends that the maximum longitudinal slope be selected based on the time and terrain. The current design has a maximum longitudinal gradient of 5% at a design speed of 70 mil / h. At a design speed of 30 mil / h, the maximum longitudinal slope is generally 7% - 12% depending on the topography.When using longer sustained climbs, the slope length cannot exceed the critical slope length when no slow-moving vehicle is provided. The critical slope length can vary from 1700 ft in 3% grade to 500 ft in 8%grade. The slope of the continuous long slope must be less than the maximum slope of any end surface of the highway. Usually the long continuous single slope is disconnected and the lower part is designed as a steep slope, while approaching the top of the slope allows the slope to decrease. At the same time, it is necessary to avoid obstruction of the view due to the inclination of the longitudinal section.The maximum longitudinal gradient of the highway is 9%. Only when the drainage of the road is a problem, if the water must be drained to the side ditch or the drainage ditch, the minimum gradient criterion is of importance. In this case, AASHTO recommends a minimum gradient of0.35%.C. sight distanceIn order to ensure the safety of driving, the road must be designed to have a sufficient distance in front of the driver's line of sight, so that they can avoid obstacles other than the obstacles, or safely overtake. The line-of-sight is the length of the road visible to the driver of the vehicle. Two meanings: "parking distance" or "non-passing sight distance" or "overtaking sight distance."No matter what happens, reasonable design requires the driver to see this danger outside a certain distance, and brake the car before hitting it. In addition, it is not safe to think that the vehicle can avoid danger by leaving the driving lane. Because this can cause the vehicle to lose controlor to collide with another car.The parking distance is composed of two parts: The first part is the distance that the driver takes before the driver finds an obstacle and brakes. In this detection and reaction phase, the vehicle travels at its initial speed; the second part is the driver’s Part of the pa rking distance depends on the speed of the vehicle and the driver's visual time and braking time. The second part of the parking distance depends on the speed, the brakes, the tires, the conditions of the road surface, and the line shape and slope of the road.Otherwise, the capacity of the highway will be reduced, and the accident will increase, because the irritable driver would risk a collision and overtake the vehicle if he cannot safely overtake the vehicle. The minimum distance in front of which the driver can safely be seen is called the overtaking distance.When making a decision on whether to pass or not, the driver must compare the visibility distance ahead and the distance required to complete the overtaking movement. The factors that influence him to make a decision are the degree of caution in driving and the acceleration performance of the vehicle. Due to the significant differences between humans, the overtaking behavior, which is mainly determined by human judgments and actions rather than the mechanical theorem, varies greatly from driver to driver. In order to establish the line-of-sight value forovertaking, engineers observed many drivers’ overtaking behavior. Between 1938 and 1941, a basic survey was established to establish a standard of over- sight distance. Assume that the operating conditions are as follows:1. It is driven at a uniform speed by the overtaking vehicle.2. Overtaking When entering the overtaking area, decelerate after being overtaken.3. When arriving at the overtaking area, the driver needs to observe the passing area for a short time and start overtaking.4. In the face of the opposite vehicle, the overtaking is completed in a delayed start-up and a hurried turn. In the overtaking process, overtaking accelerates in the overtaking lane and the average speed is 10 mil / h faster than being overtaken.5. When overtaking returns to its original lane, there must be a safe distance between it and the opposite vehicle on the other lane.The sum of the above five items is the over sight distance.中文译文公路线形设计作者:Y HassanA. 平面设计道路的线形反映在平面图上是由一系列的直线和与直线相连的圆曲线构成的。
毕业论文外文参考资料及译文 (1)【范本模板】
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毕业设计(论文)外文参考资料及译文译文题目:乡村旅游定义及影响因素学生姓名:马倩倩学号:0802110401专业:旅游管理所在学院:人文学院(民办为“龙蟠学院")指导教师:XXX职称:XXX201X年XX月XX日原文:The definition and influence factors of rural tourismThis article introduces the definition and connotation of rural tourism, the role that rural tourism played in the process of economic development and the factors which influence rural tourism.Generally, `rural tourism’ is tourism that takes place in the countryside. It is defined as ”a demand for touristic use of a rural area"(Gartner, 2004, p. 153)。
Oppermann (1996) defines `rural tourism’ as tourism occ urring in a "non-urban territory where human activity is occurring, primarily agriculture; a permanent human presence seems a qualifying requirement” (p。
88)。
For example, bed and breakfasts vacations, recreation trail networks, and harvest festivals,are all sources of `rural tourism’ that can be found in s mall towns。
高校学生就业问题研究外文参考文献译文及原文
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高校学生就业问题研究外文参考文献译文及原文1. 文献参考1. Brown, D. (2015). "The challenges faced by university graduates in the job market." Journal of Education and Work, 28(8), 917-929.2. Smith, J. (2016). "Factors influencing university graduates' employability." Studies in Higher Education, 41(1), 163-178.3. Johnson, R. (2017). "The role of career counseling in supporting university students' transition to the workplace." Journal of Career Development, 44(3), 275-288.2. 文献译文1. Brown, D.(2015)。
"大学毕业生在就业市场中所面临的挑战。
" 《教育与职业学刊》,28(8),917-929。
2. Smith, J.(2016)。
"影响大学毕业生就业能力的因素。
" 《高等教育研究》,41(1),163-178。
3. Johnson, R.(2017)。
"职业咨询在支持大学生进入职场的角色。
" 《职业发展学刊》,44(3),275-288。
3. 原文1. Brown, D. (2015). "The challenges faced by university graduates in the job market." Journal of Education and Work, 28(8), 917-929.2. Smith, J. (2016). "Factors influencing university graduates' employability." Studies in Higher Education, 41(1), 163-178.3. Johnson, R. (2017). "The role of career counseling in supporting university students' transition to the workplace." Journal of Career Development, 44(3), 275-288.。
外文文献翻译原文+译文
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外文文献翻译原文Analysis of Con tin uous Prestressed Concrete BeamsChris BurgoyneMarch 26, 20051、IntroductionThis conference is devoted to the development of structural analysis rather than the strength of materials, but the effective use of prestressed concrete relies on an appropriate combination of structural analysis techniques with knowledge of the material behaviour. Design of prestressed concrete structures is usually left to specialists; the unwary will either make mistakes or spend inordinate time trying to extract a solution from the various equations.There are a number of fundamental differences between the behaviour of prestressed concrete and that of other materials. Structures are not unstressed when unloaded; the design space of feasible solutions is totally bounded;in hyperstatic structures, various states of self-stress can be induced by altering the cable profile, and all of these factors get influenced by creep and thermal effects. How were these problems recognised and how have they been tackled?Ever since the development of reinforced concrete by Hennebique at the end of the 19th century (Cusack 1984), it was recognised that steel and concrete could be more effectively combined if the steel was pretensioned, putting the concrete into compression. Cracking could be reduced, if not prevented altogether, which would increase stiffness and improve durability. Early attempts all failed because the initial prestress soon vanished, leaving the structure to be- have as though it was reinforced; good descriptions of these attempts are given by Leonhardt (1964) and Abeles (1964).It was Freyssineti’s observations of the sagging of the shallow arches on three bridges that he had just completed in 1927 over the River Allier near Vichy which led directly to prestressed concrete (Freyssinet 1956). Only the bridge at Boutiron survived WWII (Fig 1). Hitherto, it had been assumed that concrete had a Young’s modulus which remained fixed, but he recognised that the de- ferred strains due to creep explained why the prestress had been lost in the early trials. Freyssinet (Fig. 2) also correctly reasoned that high tensile steel had to be used, so that some prestress would remain after the creep had occurred, and alsothat high quality concrete should be used, since this minimised the total amount of creep. The history of Freyssineti’s early prestressed concrete work is written elsewhereFigure1:Boutiron Bridge,Vic h yFigure 2: Eugen FreyssinetAt about the same time work was underway on creep at the BRE laboratory in England ((Glanville 1930) and (1933)). It is debatable which man should be given credit for the discovery of creep but Freyssinet clearly gets the credit for successfully using the knowledge to prestress concrete.There are still problems associated with understanding how prestressed concrete works, partly because there is more than one way of thinking about it. These different philosophies are to some extent contradictory, and certainly confusing to the young engineer. It is also reflected, to a certain extent, in the various codes of practice.Permissible stress design philosophy sees prestressed concrete as a way of avoiding cracking by eliminating tensile stresses; the objective is for sufficient compression to remain after creep losses. Untensionedreinforcement, which attracts prestress due to creep, is anathema. This philosophy derives directly from Freyssinet’s logic and is primarily a working stress concept.Ultimate strength philosophy sees prestressing as a way of utilising high tensile steel as reinforcement. High strength steels have high elastic strain capacity, which could not be utilised when used as reinforcement; if the steel is pretensioned, much of that strain capacity is taken out before bonding the steel to the concrete. Structures designed this way are normally designed to be in compression everywhere under permanent loads, but allowed to crack under high live load. The idea derives directly from the work of Dischinger (1936) and his work on the bridge at Aue in 1939 (Schonberg and Fichter 1939), as well as that of Finsterwalder (1939). It is primarily an ultimate load concept. The idea of partial prestressing derives from these ideas.The Load-Balancing philosophy, introduced by T.Y. Lin, uses prestressing to counter the effect of the permanent loads (Lin 1963). The sag of the cables causes an upward force on the beam, which counteracts the load on the beam. Clearly, only one load can be balanced, but if this is taken as the total dead weight, then under that load the beam will perceive only the net axial prestress and will have no tendency to creep up or down.These three philosophies all have their champions, and heated debates take place between them as to which is the most fundamental.2、Section designFrom the outset it was recognised that prestressed concrete has to be checked at both the working load and the ultimate load. For steel structures, and those made from reinforced concrete, there is a fairly direct relationship between the load capacity under an allowable stress design, and that at the ultimate load under an ultimate strength design. Older codes were based on permissible stresses at the working load; new codes use moment capacities at the ultimate load. Different load factors are used in the two codes, but a structure which passes one code is likely to be acceptable under the other.For prestressed concrete, those ideas do not hold, since the structure is highly stressed, even when unloaded. A small increase of load can cause some stress limits to be breached, while a large increase in load might be needed to cross other limits. The designer has considerable freedom to vary both the working load and ultimate load capacities independently; both need to be checked.A designer normally has to check the tensile and compressive stresses, in both the top and bottom fibre of the section, for every load case. The critical sections are normally, but not always, the mid-span and the sections over piers but other sections may become critical ,when the cable profile has to be determined.The stresses at any position are made up of three components, one of which normally has a different sign from the other two; consistency of sign convention is essential.If P is the prestressing force and e its eccentricity, A and Z are the area of the cross-section and its elastic section modulus, while M is the applied moment, then where ft and fc are the permissible stresses in tension and compression.c e t f ZM Z P A P f ≤-+≤Thus, for any combination of P and M , the designer already has four in- equalities to deal with.The prestressing force differs over time, due to creep losses, and a designer isusually faced with at least three combinations of prestressing force and moment;• the applied moment at the time the prestress is first applied, before creep losses occur,• the maximum applied moment after creep losses, and• the minimum applied moment after creep losses.Figure 4: Gustave MagnelOther combinations may be needed in more complex cases. There are at least twelve inequalities that have to be satisfied at any cross-section, but since an I-section can be defined by six variables, and two are needed to define the prestress, the problem is over-specified and it is not immediately obvious which conditions are superfluous. In the hands of inexperienced engineers, the design process can be very long-winded. However, it is possible to separate out the design of the cross-section from the design of the prestress. By considering pairs of stress limits on the same fibre, but for different load cases, the effects of the prestress can be eliminated, leaving expressions of the form:rangestress e Perm issibl Range Mom entZ These inequalities, which can be evaluated exhaustively with little difficulty, allow the minimum size of the cross-section to be determined.Once a suitable cross-section has been found, the prestress can be designed using a construction due to Magnel (Fig.4). The stress limits can all be rearranged into the form:()M fZ PA Z e ++-≤1 By plotting these on a diagram of eccentricity versus the reciprocal of the prestressing force, a series of bound lines will be formed. Provided the inequalities (2) are satisfied, these bound lines will always leave a zone showing all feasible combinations of P and e. The most economical design, using the minimum prestress, usually lies on the right hand side of the diagram, where the design is limited by the permissible tensile stresses.Plotting the eccentricity on the vertical axis allows direct comparison with the crosssection, as shown in Fig. 5. Inequalities (3) make no reference to the physical dimensions of the structure, but these practical cover limits can be shown as wellA good designer knows how changes to the design and the loadings alter the Magnel diagram. Changing both the maximum andminimum bending moments, but keeping the range the same, raises and lowers the feasible region. If the moments become more sagging the feasible region gets lower in the beam.In general, as spans increase, the dead load moments increase in proportion to the live load. A stage will be reached where the economic point (A on Fig.5) moves outside the physical limits of the beam; Guyon (1951a) denoted the limiting condition as the critical span. Shorter spans will be governed by tensile stresses in the two extreme fibres, while longer spans will be governed by the limiting eccentricity and tensile stresses in the bottom fibre. However, it does not take a large increase in moment ,at which point compressive stresses will govern in the bottom fibre under maximum moment.Only when much longer spans are required, and the feasible region moves as far down as possible, does the structure become governed by compressive stresses in both fibres.3、Continuous beamsThe design of statically determinate beams is relatively straightforward; the engineer can work on the basis of the design of individual cross-sections, as outlined above. A number of complications arise when the structure is indeterminate which means that the designer has to consider, not only a critical section,but also the behaviour of the beam as a whole. These are due to the interaction of a number of factors, such as Creep, Temperature effects and Construction Sequence effects. It is the development of these ideas whichforms the core of this paper. The problems of continuity were addressed at a conference in London (Andrew and Witt 1951). The basic principles, and nomenclature, were already in use, but to modern eyes concentration on hand analysis techniques was unusual, and one of the principle concerns seems to have been the difficulty of estimating losses of prestressing force.3.1 Secondary MomentsA prestressing cable in a beam causes the structure to deflect. Unlike the statically determinate beam, where this motion is unrestrained, the movement causes a redistribution of the support reactions which in turn induces additional moments. These are often termed Secondary Moments, but they are not always small, or Parasitic Moments, but they are not always bad.Freyssinet’s bridge across the Marne at Luzancy, started in 1941 but not completed until 1946, is often thought of as a simply supported beam, but it was actually built as a two-hinged arch (Harris 1986), with support reactions adjusted by means of flat jacks and wedges which were later grouted-in (Fig.6). The same principles were applied in the later and larger beams built over the same river.Magnel built the first indeterminate beam bridge at Sclayn, in Belgium (Fig.7) in 1946. The cables are virtually straight, but he adjusted the deck profile so that the cables were close to the soffit near mid-span. Even with straight cables the sagging secondary momentsare large; about 50% of the hogging moment at the central support caused by dead and live load.The secondary moments cannot be found until the profile is known but the cablecannot be designed until the secondary moments are known. Guyon (1951b) introduced the concept of the concordant profile, which is a profile that causes no secondary moments; es and ep thus coincide. Any line of thrust is itself a concordant profile.The designer is then faced with a slightly simpler problem; a cable profile has to be chosen which not only satisfies the eccentricity limits (3) but is also concordant. That in itself is not a trivial operation, but is helped by the fact that the bending moment diagram that results from any load applied to a beam will itself be a concordant profile for a cable of constant force. Such loads are termed notional loads to distinguish them from the real loads on the structure. Superposition can be used to progressively build up a set of notional loads whose bending moment diagram gives the desired concordant profile.3.2 Temperature effectsTemperature variations apply to all structures but the effect on prestressed concrete beams can be more pronounced than in other structures. The temperature profile through the depth of a beam (Emerson 1973) can be split into three components for the purposes of calculation (Hambly 1991). The first causes a longitudinal expansion, which is normally released by the articulation of the structure; the second causes curvature which leads to deflection in all beams and reactant moments in continuous beams, while the third causes a set of self-equilibrating set of stresses across the cross-section.The reactant moments can be calculated and allowed-for, but it is the self- equilibrating stresses that cause the main problems for prestressed concrete beams. These beams normally have high thermal mass which means that daily temperature variations do not penetrate to the core of the structure. The result is a very non-uniform temperature distribution across the depth which in turn leads to significant self-equilibrating stresses. If the core of the structure is warm, while the surface is cool, such as at night, then quite large tensile stresses can be developed on the top and bottom surfaces. However, they only penetrate a very short distance into the concrete and the potential crack width is very small. It can be very expensive to overcome the tensile stress by changing the section or the prestress。
毕业设计(论文)外文资料及译文(模板)
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大连东软信息学院
毕业设计(论文)外文资料及译文
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大连东软信息学院
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大连东软信息学院毕业设计(论文)译文
大连东软信息学院毕业设计(论文)译文
大连东软信息学院毕业设计(论文)译文
大连东软信息学院毕业设计(论文)译文
大连东软信息学院毕业设计(论文)译文。
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((英文参考文献及译文)二〇一六年六月本科毕业论文 题 目:STATISTICAL SAMPLING METHOD, USED INTHE AUDIT学生姓名:王雪琴学 院:管理学院系 别:会计系专 业:财务管理班 级:财管12-2班 学校代码: 10128 学 号: 201210707016Statistics and AuditRomanian Statistical Review nr. 5 / 2010STATISTICAL SAMPLING METHOD, USED IN THE AUDIT - views, recommendations, fi ndingsPhD Candidate Gabriela-Felicia UNGUREANUAbstractThe rapid increase in the size of U.S. companies from the earlytwentieth century created the need for audit procedures based on the selectionof a part of the total population audited to obtain reliable audit evidence, tocharacterize the entire population consists of account balances or classes oftransactions. Sampling is not used only in audit – is used in sampling surveys,market analysis and medical research in which someone wants to reach aconclusion about a large number of data by examining only a part of thesedata. The difference is the “population” from which the sample is selected, iethat set of data which is intended to draw a conclusion. Audit sampling appliesonly to certain types of audit procedures.Key words: sampling, sample risk, population, sampling unit, tests ofcontrols, substantive procedures.Statistical samplingCommittee statistical sampling of American Institute of CertifiedPublic Accountants of (AICPA) issued in 1962 a special report, titled“Statistical sampling and independent auditors’ which allowed the use ofstatistical sampling method, in accordance with Generally Accepted AuditingStandards (GAAS). During 1962-1974, the AICPA published a series of paperson statistical sampling, “Auditor’s Approach to Statistical Sampling”, foruse in continuing professional education of accountants. During 1962-1974,the AICPA published a series of papers on statistical sampling, “Auditor’sApproach to Statistical Sampling”, for use in continuing professional educationof accountants. In 1981, AICPA issued the professional standard, “AuditSampling”, which provides general guidelines for both sampling methods,statistical and non-statistical.Earlier audits included checks of all transactions in the period coveredby the audited financial statements. At that time, the literature has not givenparticular attention to this subject. Only in 1971, an audit procedures programprinted in the “Federal Reserve Bulletin (Federal Bulletin Stocks)” includedseveral references to sampling such as selecting the “few items” of inventory.Statistics and Audit The program was developed by a special committee, which later became the AICPA, that of Certified Public Accountants American Institute.In the first decades of last century, the auditors often applied sampling, but sample size was not in related to the efficiency of internal control of the entity. In 1955, American Institute of Accountants has published a study case of extending the audit sampling, summarizing audit program developed by certified public accountants, to show why sampling is necessary to extend the audit. The study was important because is one of the leading journal on sampling which recognize a relationship of dependency between detail and reliability testing of internal control.In 1964, the AICPA’s Auditing Standards Board has issued a report entitled “The relationship between statistical sampling and Generally Accepted Auditing Standards (GAAS)” which illustrated the relationship between the accuracy and reliability in sampling and provisions of GAAS.In 1978, the AICPA published the work of Donald M. Roberts,“Statistical Auditing”which explains the underlying theory of statistical sampling in auditing.In 1981, AICPA issued the professional standard, named “Audit Sampling”, which provides guidelines for both sampling methods, statistical and non-statistical.An auditor does not rely solely on the results of a single procedure to reach a conclusion on an account balance, class of transactions or operational effectiveness of the controls. Rather, the audit findings are based on combined evidence from several sources, as a consequence of a number of different audit procedures. When an auditor selects a sample of a population, his objective is to obtain a representative sample, ie sample whose characteristics are identical with the population’s characteristics. This means that selected items are identical with those remaining outside the sample.In practice, auditors do not know for sure if a sample is representative, even after completion the test, but they “may increase the probability that a sample is representative by accuracy of activities made related to design, sample selection and evaluation” [1]. Lack of specificity of the sample results may be given by observation errors and sampling errors. Risks to produce these errors can be controlled.Observation error (risk of observation) appears when the audit test did not identify existing deviations in the sample or using an inadequate audit technique or by negligence of the auditor.Sampling error (sampling risk) is an inherent characteristic of the survey, which results from the fact that they tested only a fraction of the total population. Sampling error occurs due to the fact that it is possible for Revista Română de Statistică nr. 5 / 2010Statistics and Auditthe auditor to reach a conclusion, based on a sample that is different from the conclusion which would be reached if the entire population would have been subject to audit procedures identical. Sampling risk can be reduced by adjusting the sample size, depending on the size and population characteristics and using an appropriate method of selection. Increasing sample size will reduce the risk of sampling; a sample of the all population will present a null risk of sampling.Audit Sampling is a method of testing for gather sufficient and appropriate audit evidence, for the purposes of audit. The auditor may decide to apply audit sampling on an account balance or class of transactions. Sampling audit includes audit procedures to less than 100% of the items within an account balance or class of transactions, so all the sample able to be selected. Auditor is required to determine appropriate ways of selecting items for testing. Audit sampling can be used as a statistical approach and a non- statistical.Statistical sampling is a method by which the sample is made so that each unit consists of the total population has an equal probability of being included in the sample, method of sample selection is random, allowed to assess the results based on probability theory and risk quantification of sampling. Choosing the appropriate population make that auditor’ findings can be extended to the entire population.Non-statistical sampling is a method of sampling, when the auditor uses professional judgment to select elements of a sample. Since the purpose of sampling is to draw conclusions about the entire population, the auditor should select a representative sample by choosing sample units which have characteristics typical of that population. Results will not extrapolate the entire population as the sample selected is representative.Audit tests can be applied on the all elements of the population, where is a small population or on an unrepresentative sample, where the auditor knows the particularities of the population to be tested and is able to identify a small number of items of interest to audit. If the sample has not similar characteristics for the elements of the entire population, the errors found in the tested sample can not extrapolate.Decision of statistical or non-statistical approach depends on the auditor’s professional judgment which seeking sufficient appropriate audits evidence on which to completion its findings about the audit opinion.As a statistical sampling method refer to the random selection that any possible combination of elements of the community is equally likely to enter the sample. Simple random sampling is used when stratification was not to audit. Using random selection involves using random numbers generated byRomanian Statistical Review nr. 5 / 2010Statistics and Audit a computer. After selecting a random starting point, the auditor found the first random number that falls within the test document numbers. Only when the approach has the characteristics of statistical sampling, statistical assessments of risk are valid sampling.In another variant of the sampling probability, namely the systematic selection (also called random mechanical) elements naturally succeed in office space or time; the auditor has a preliminary listing of the population and made the decision on sample size. “The auditor calculated a counting step, and selects the sample element method based on step size. Step counting is determined by dividing the volume of the community to sample the number of units desired. Advantages of systematic screening are its usability. In most cases, a systematic sample can be extracted quickly and method automatically arranges numbers in successive series.”[2].Selection by probability proportional to size - is a method which emphasizes those population units’recorded higher values. The sample is constituted so that the probability of selecting any given element of the population is equal to the recorded value of the item;Stratifi ed selection - is a method of emphasis of units with higher values and is registered in the stratification of the population in subpopulations. Stratification provides a complete picture of the auditor, when population (data table to be analyzed) is not homogeneous. In this case, the auditor stratifies a population by dividing them into distinct subpopulations, which have common characteristics, pre-defined. “The objective of stratification is to reduce the variability of elements in each layer and therefore allow a reduction in sample size without a proportionate increase in the risk of sampling.” [3] If population stratification is done properly, the amount of sample size to come layers will be less than the sample size that would be obtained at the same level of risk given sample with a sample extracted from the entire population. Audit results applied to a layer can be designed only on items that are part of that layer.I appreciated as useful some views on non-statistical sampling methods, which implies that guided the selection of the sample selecting each element according to certain criteria determined by the auditor. The method is subjective; because the auditor selects intentionally items containing set features him.The selection of the series is done by selecting multiple elements series (successive). Using sampling the series is recommended only if a reasonable number of sets used. Using just a few series there is a risk that the sample is not representative. This type of sampling can be used in addition to other samples, where there is a high probability of occurrence of errors. At the arbitrary selection, no items are selected preferably from the auditor, Revista Română de Statistică nr. 5 / 2010Statistics and Auditthat regardless of size or source or characteristics. Is not the recommended method, because is not objective.That sampling is based on the auditor’s professional judgment, which may decide which items can be part or not sampled. Because is not a statistical method, it can not calculate the standard error. Although the sample structure can be constructed to reproduce the population, there is no guarantee that the sample is representative. If omitted a feature that would be relevant in a particular situation, the sample is not representative.Sampling applies when the auditor plans to make conclusions about population, based on a selection. The auditor considers the audit program and determines audit procedures which may apply random research. Sampling is used by auditors an internal control systems testing, and substantive testing of operations. The general objectives of tests of control system and operations substantive tests are to verify the application of pre-defined control procedures, and to determine whether operations contain material errors.Control tests are intended to provide evidence of operational efficiency and controls design or operation of a control system to prevent or detect material misstatements in financial statements. Control tests are necessary if the auditor plans to assess control risk for assertions of management.Controls are generally expected to be similarly applied to all transactions covered by the records, regardless of transaction value. Therefore, if the auditor uses sampling, it is not advisable to select only high value transactions. Samples must be chosen so as to be representative population sample.An auditor must be aware that an entity may change a special control during the course of the audit. If the control is replaced by another, which is designed to achieve the same specific objective, the auditor must decide whether to design a sample of all transactions made during or just a sample of transactions controlled again. Appropriate decision depends on the overall objective of the audit test.Verification of internal control system of an entity is intended to provide guidance on the identification of relevant controls and design evaluation tests of controls.Other tests:In testing internal control system and testing operations, audit sample is used to estimate the proportion of elements of a population containing a characteristic or attribute analysis. This proportion is called the frequency of occurrence or percentage of deviation and is equal to the ratio of elements containing attribute specific and total number of population elements. WeightRomanian Statistical Review nr. 5 / 2010Statistics and Audit deviations in a sample are determined to calculate an estimate of the proportion of the total population deviations.Risk associated with sampling - refers to a sample selection which can not be representative of the population tested. In other words, the sample itself may contain material errors or deviations from the line. However, issuing a conclusion based on a sample may be different from the conclusion which would be reached if the entire population would be subject to audit.Types of risk associated with sampling:Controls are more effective than they actually are or that there are not significant errors when they exist - which means an inappropriate audit opinion. Controls are less effective than they actually are that there are significant errors when in fact they are not - this calls for additional activities to establish that initial conclusions were incorrect.Attributes testing - the auditor should be defining the characteristics to test and conditions for misconduct. Attributes testing will make when required objective statistical projections on various characteristics of the population. The auditor may decide to select items from a population based on its knowledge about the entity and its environment control based on risk analysis and the specific characteristics of the population to be tested.Population is the mass of data on which the auditor wishes to generalize the findings obtained on a sample. Population will be defined compliance audit objectives and will be complete and consistent, because results of the sample can be designed only for the population from which the sample was selected.Sampling unit - a unit of sampling may be, for example, an invoice, an entry or a line item. Each sample unit is an element of the population. The auditor will define the sampling unit based on its compliance with the objectives of audit tests.Sample size - to determine the sample size should be considered whether sampling risk is reduced to an acceptable minimum level. Sample size is affected by the risk associated with sampling that the auditor is willing to accept it. The risk that the auditor is willing to accept lower, the sample will be higher.Error - for detailed testing, the auditor should project monetary errors found in the sample population and should take into account the projected error on the specific objective of the audit and other audit areas. The auditor projects the total error on the population to get a broad perspective on the size of the error and comparing it with tolerable error.For detailed testing, tolerable error is tolerable and misrepresentations Revista Română de Statistică nr. 5 / 2010Statistics and Auditwill be a value less than or equal to materiality used by the auditor for the individual classes of transactions or balances audited. If a class of transactions or account balances has been divided into layers error is designed separately for each layer. Design errors and inconsistent errors for each stratum are then combined when considering the possible effect on the total classes of transactions and account balances.Evaluation of sample results - the auditor should evaluate the sample results to determine whether assessing relevant characteristics of the population is confirmed or needs to be revised.When testing controls, an unexpectedly high rate of sample error may lead to an increase in the risk assessment of significant misrepresentation unless it obtained additional audit evidence to support the initial assessment. For control tests, an error is a deviation from the performance of control procedures prescribed. The auditor should obtain evidence about the nature and extent of any significant changes in internal control system, including the staff establishment.If significant changes occur, the auditor should review the understanding of internal control environment and consider testing the controls changed. Alternatively, the auditor may consider performing substantive analytical procedures or tests of details covering the audit period.In some cases, the auditor might not need to wait until the end audit to form a conclusion about the effectiveness of operational control, to support the control risk assessment. In this case, the auditor might decide to modify the planned substantive tests accordingly.If testing details, an unexpectedly large amount of error in a sample may cause the auditor to believe that a class of transactions or account balances is given significantly wrong in the absence of additional audit evidence to show that there are not material misrepresentations.When the best estimate of error is very close to the tolerable error, the auditor recognizes the risk that another sample have different best estimate that could exceed the tolerable error.ConclusionsFollowing analysis of sampling methods conclude that all methods have advantages and disadvantages. But the auditor is important in choosing the sampling method is based on professional judgment and take into account the cost / benefit ratio. Thus, if a sampling method proves to be costly auditor should seek the most efficient method in view of the main and specific objectives of the audit.Romanian Statistical Review nr. 5 / 2010Statistics and Audit The auditor should evaluate the sample results to determine whether the preliminary assessment of relevant characteristics of the population must be confirmed or revised. If the evaluation sample results indicate that the relevant characteristics of the population needs assessment review, the auditor may: require management to investigate identified errors and likelihood of future errors and make necessary adjustments to change the nature, timing and extent of further procedures to take into account the effect on the audit report.Selective bibliography:[1] Law no. 672/2002 updated, on public internal audit[2] Arens, A şi Loebbecke J - Controve …Audit– An integrate approach”, 8th edition, Arc Publishing House[3] ISA 530 - Financial Audit 2008 - International Standards on Auditing, IRECSON Publishing House, 2009- Dictionary of macroeconomics, Ed C.H. Beck, Bucharest, 2008Revista Română de Statistică nr. 5 / 2010Statistics and Audit摘要美国公司的规模迅速增加,从第二十世纪初创造了必要的审计程序,根据选定的部分总人口的审计,以获得可靠的审计证据,以描述整个人口组成的帐户余额或类别的交易。
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毕业设计(论文)外文参考资料及译文译文题目: development and application of combinedmachine tool组合机床的发展与应用学生姓名:王斑学号: 1021108014专业: M10机械设计制造及其自动化所在学院:机电工程学院指导教师:赵海霞职称:教师2014年 2 月 25 日Development and application of combined machine tool The aggregate machine-tool is take the general part as a foundation, matches by presses the work piece specific shape and the processing technological design special-purpose part and the jig, the composition semiautomatic or the automatic special purpose machine. The aggregate machine-tool selects the method which generally multiple spindle, the multi-knives, the multi-working procedures, many or the multi-locations simultaneously process, production efficiency ratio general engine bed high several times to several dozens times. Because the general part already the standardization and the seriation, might according to need to dispose nimbly, could reduce the design and the manufacturing cycle. The multi-axle-boxes are aggregate machine-tool's core parts. It selects the common parts, carries on the design according to the special-purpose request, in the aggregate machine-tool design's process, is one of work load big parts. It is acts according to the work piece processing hole quantity which and the position the working procedure chart and the processing schematic drawing determined, the cutting specifications and the main axle type design transmission various main axles movement power unit. Its power from the general power box, installs together with the power box in to feed sliding table, may complete drills, twists and so on working processes. To meet the combination of CNC machine tools of development, it is a component of the NC machine tool NC module. Portfolio machine is modular combination of CNC machine tools brought about by the inevitable result is the combination of CNC machine tools necessary foundation, NC module so greatly enriched the portfolio of generic pieces of machine tools, it will cause combination of General Machine Type of a fundamental change. NC module, according to their coordinates NC (axis) of mainly single coordinates, dual coordinate and coordinate. Its spindle number, single and multi-axis module, there are single and multi-axis composite processing module.NC module development, there are mainly two kinds of ways: First, the existing combination of machine tools should be relatively common items, the NC General of the design. At present there is also domestic NC is developing one-dimensional slider, NC two-dimensional (Cross) Waterloo Taiwan, the NC rotary table, all this is the way the NC is based on the characteristics of the development of NC The unique combination of machine tool parts, such as automatic replacement of multi-axis spindle box, the NCrotary knife, NC for the manipulator, NC for me, such as mechanical hand. The past 10 years, machine tools and automatic line group in the highly efficient, high productivity, flexibility and the use of parallel (synchronous) works develop more reasonable and more savings in the programme has made a lot of progress. In particular the automobile industry, in order to improve the performance of motor vehicles, precision machining of components made a number of new demands, so the machine performance requirements are also higher.In recent years, with numerical control technology, electronics technology, computer technology, such as the development of machine tools combination of mechanical structure and control system has also undergone a tremendous change. With the combination of machine tools of development: 1. NC. A combination of CNC machine tools, not only a complete change from the previous relay circuit composed of a combination of machine tool control system, and the head. Also the mechanical structure and composition of machine parts universal standards has or is undergoing an enormous change。
2. Modular. NC plus one two modular greatly enrich the composition of the Universal machine parts, it will cause universal machine combination of a fundamental change,According to modularization design theory,the modules of aggregate machine tool are divided in this paper on the basis of function analysis.Taking UG software as developing flat,the parametric 3D modeling module bank is set up.The database for storing the data used in design is also set up at the same time.Under the guiding of the system,users can complete such tasks as module choice,module combination,and calculation,etc.Therefore,computer aided modularization design of aggregate machine tool can be realiz..3. High-speed. As high-speed processing can greatly reduce the surface roughness and cutting force components, greatly reducing cutting temperature, increase productivity, the machine's high-speed research is rising, especially NC machine tool movements and the main feed velocity has reached an alarming high-speed . For example, the U.S. production of processing center, spindle speed up to 15 000-60 000r/min, table fast forward speed of up to 90-120 m / min. Conform to the trend of high-speed machines, machine tools combination of speed getting higher and higher. For example, the German Volkswagen plant in the processing of aluminum cylinder head combustion chamber side, the use of PCD cutter and milling speed of up to 3 075m/min, feed rate of 3 600mm/min, the CBN has adopted the installation of the new boring knife blade processing KevinGray Rail, the cutting speed of 800 m / min, feed rate of I 500 mm / min. 4, precision of. As the realization of NC machine tools, thus increasing the accuracy of processing machine, so that some of the past seem difficult to achieve the accuracy of processing has been realized today.5. Protection of the whole. Completely closed the machine is now a major characteristic, whether single or machine tool production lines, are all closed by the housings, electrical, hydraulic full use of air alignment. All closed protection, not only production line machine tools and their aesthetic appearance, but also improve the safety, reliability and ease of maintenance.There are two virtues that are low cost and high efficiency in modular machine tools,which is widely used in batch production.This text introduces an automatic control system of multi-station modular machine tool.Applying PLC to control the modular machine tool can raise the automation extent and work efficiency and reduce a great deal of hardware wiring,so the dependability of the machine tool is also increase.Machining as a shape-producing method is the most universally used and the most important of all manufacturing processes. Machining is a shape-producing process in which a power-driven device causes material to be removed in chip form. Most machining is done with equipment that supports both the work piece and cutting tool although in some cases portable equipment is used with unsupported workpiece.Low setup cost for small quantities. Machining has tow applications in manufacturing. For casting, forging, and pressworking, each specific shape to be p5roduced, even one part, nearly always has a high tooling cost. The shapes that may be produced, even one part, nearly always has a high tooling cost. The shapes that may be produced by welding depend to a large degree on the shapes of raw material that are available. By making use of generally high cost equipment but without special tooling, it is possible, bu machining, to start with nearly any form of any material, so long as the exterior dimensions are great enough, and produce any desired shape from any material. Therefore, machining is usually the preferred method for producing one or a few parts, even when the design of the part would logically lead to casting, forging or pressworking if a high quantity were to be produced.Close accuracies, good finishes. The second application for machining is based on the high accuracies and surface finishes possible. Many of the parts machined in low quantities would be produced with lower but acceptable tolerances if produced in highquantities by some other process. On the other hand, many pars are given shapes by some high quantity deformation process and machined only on selected surfaces where high accuracies are needed. Internal threads, for example, are seldom produced by any means other than machining and small holes in pressworked parts may be machined following the pressworking operations.The combination of machine tools based on general parts, workpiece supported by the specific shape and design of special processing of parts and fixtures, the composition semiautomatic or automatic special machine. Combination machine generally adopts multi shaft, knife, more processes, more or multiple locations simultaneously processes, and production efficiency ratio general machine tool high several times to several times. As generic components have been standardized and serialized, may need to be flexible configuration, can shorten design and manufacturing cycle. Therefore, the aggregate machine-tool has the advantages of high efficiency and low cost, the large, mass production to be widely applied, and can be used to compose the automatic production line. Combination machine tools for processing general box or special shaped parts. Processing, workpiece generally does not rotate, by movement of the rotatable cutter and tool and workpiece relative feed movement, to achieve drilling, reaming, counterboring, reaming, boring, milling, cutting and processing of external thread face and etc.. Some combination machine adopts clamping workpiece machining head to rotate, by the tool for the feed movement, also can achieve some rotating parts ( such as car rear axle flywheel, etc.) of the face and processingThe first benefit offered by all forms of transfer and unit machine is improved automation. The operator intervention related to producing workpieces can be reduced or eliminated. Many transfer and unit machine can run unattended during their entire machining cycle, freeing the operator to do other tasks. This gives the transfer and unit machine user several side benefits including reduced operator fatigue, fewer mistakes caused by human error, and consistent and predictable machining time for each workpiece. Since the machine will be running under program control, the skill level required of the transfer and unit machine operator (related to basic machining practice) is also reduced as compared to a machinist producing workpieces with conventional machine tools.In twentieth Century since the 70's, along with the cutting tool with indexable inserts,dense gear milling cutter, boring size automatic detection and automatic compensation for tool technology development, combination of the machining accuracy of the machine tool is improved. Milling plane plane of up to 0.05mm and1000 mm, the surface roughness can be as low as 2.5to 0.63 microns; boring accuracy up to IT7~6, hole distance precision can reach 0.03~ 0.02 micron. A dedicated machine is along with the automobile industry development. In some parts of special machine tool for repeated use, and gradually developed into a general components, resulting in a combined machine tool. The earliest combination machine is made in the United States in 1911, for the processing of auto parts. Initially, the machine tool manufacturing plant has its own general component standard. In order to improve different factory universal interchangeability of the parts, and is convenient for users to use and repair.组合机床的发展与应用组合机床是以通用部件为基础,配以按工件特定形状和加工工艺设计的专用部件和夹具,组成的半自动或自动专用机床。