英文文献翻译

英文文献翻译
英文文献翻译

人力资源管理

人力资源管理,是在经济学与人本思想指导下,通过招聘、甄选、培训、报酬等管理形式对组织内外相关人力资源进行有效运用,满足组织当前及未来发展的需要,保证组织目标实现与成员发展的最大化。预测组织人力资源需求并作出人力需求计划、招聘选择人员并进行有效组织、考核绩效支付报酬并进行有效激励、结合组织与个人需要进行有效开发以便实现最优组织绩效的全过程。

学术界一般把人力资源管理分八大模块或者六大模块:

1、人力资源规划;

2、招聘与配置;

3、培训与开发;

4、绩效管理;

5、薪酬福利管理;

6、劳动关系管理。

2 名词解释

2.1 第一种解释

概念

人力资源管理[1](Human Resource Management,简称HRM)人力资源:是指在一定范围内的人口总体所具有的劳动能力的总和;或者说是指能够推动整个经济和社会发展的具有智力劳动和体力劳动能力的人们的总和。

诠释

人力资源管理[2]是指根据企业发展战略的要求,有计划地对人力资源进行合理配置,通过对企业中员工的招聘、培训、使用、考核、激励、调整等一系列过程,调动员工的积极性,发挥员工的潜能,为企业创造价值,确保企业战略目标的实现。是企业的一系列人力资源政策以及相应的管理活动。这些活动主要包括企业人力资源战略的制定,员工的招募与选拔,培训与开发,绩效管理,薪酬管理,员工流动管理,员工关系管理,员工安全与健康管理等。即:企业运用现代管理方法,对人力资源的获取(选人)、开发(育人)、保持(留人)和利用(用人)等方面所进行的计划、组织、指挥、控制和协调等一系列活动,最终达到实现企业发展目标的一种管理行为。

21世纪是全球化、市场化、信息化的世纪,是知识主宰的世纪。在新经济条件下,企业人力资源管理必然要发生相应的变化。因此,企业人力资源管理系统将构筑在Internet/intranet的计算机网络平台上,形成新型的人力资源管理模式。

2.2 第二种解释

概念

人力资源管理,就是指运用现代化的科学方法,对与一定物力相结合的人力进行合理的培训、组织和调配,使人力、物力经常保持最佳比例,同时对人的思想、心理和行为进行恰当的诱导、控制和协调,充分发挥人的主观能动性,使人尽其才,事得其人,人事相宜,以实现组织目标。

Human Resource Management

Human resource management is in the economics and human thought, through recruitment,

selection, training, compensation and other forms of management and outside organizations related to the effective use of human resources to meet the needs of current and future development of the organization, with members to ensure that organizational goals to achieve development maximized.Predict organizational human resource needs and make a demand for manpower planning, recruitment and selection of personnel for the effective organization, assessment and effective performance-based compensation incentives, combined with the need for effective organizational and personal development in order to achieve optimal organizational performance of the whole process.

Academia in general human resources management is divided into eight modules or six modules:

1. human resource planning;

2.recruitment and configuration;

3. training and development;

4. performance management;

5. salaries and benefits administration;

6. labor relations management.

2 Glossary

The first explanation 2.1

Concept

Human resources management [1] (Human Resource Management, abbreviated HRM) Human resources: refers to the sum of the overall population within a certain range has the ability to work; or that refers to the ability to promote economic and social development throughout with intellectual labor and sum manual ability of people.

Explain

Human resources management [ 2 ] is defined according to the requirements of enterprise development strategies , the rational allocation of human resources in a planned way , through the enterprise staff recruitment , training , use, evaluation, motivation , and a series of adjustment process , mobilize employees enthusiasm, play to their potential to create value for the enterprise to ensure the realization of strategic objectives . Is a series of corporate human resources policies and corresponding management activities. These activities include the development of human resource strategy , employee recruitment and selection, training and development, performance management, compensation management, employee mobility management, employee relations management, employee safety and health management. Namely: the use of modern enterprise management methods , get ( selection ) , plan development ( education ) , hold ( to keep people ) and utilization ( employment ) and other aspects of the conduct , organization, command, control and coordination of human resources , such as a a series of activities to achieve business development goals and ultimately achieve a management behavior.

The 21st century is globalization, market , information technology century, the century of knowledge dominate . In the new economy, human resource management is bound to change accordingly . Therefore , human resource management system will build on the computer network platform Internet / intranet , the formation of a new human resources management.

2.2 second explanation

Concept

Human Resource Management, refers to the use of modern scientific methods, and some

combination of human and material resources for a reasonable training, organization and deployment, so human, material and keep the best ratio, while the human mind, psychological and inappropriate behavior induction, control and coordination, give full play to people's initiative to make the best use, it lent people, personnel affordable in order to achieve organizational goals.

《Java编程思想第十版》

1 . 1 1 J a v a 和因特网

既然Java 不过是另一种类型的程序设计语言,大家可能会奇怪它为什么值得如此重视,为什么还有这么多的人认为它是计算机程序设计的一个里程碑呢?如果您来自一个传统的程序设计背景,那么答案在刚开始的时候并不是很明显。Java 除了可解决传统的程序设计问题以外,还能解决World Wide Web(万维网)上的编程问题。

1 . 1 1 . 1 什么是W e b ?

Web 这个词刚开始显得有些泛泛,似乎“冲浪”、“网上存在”以及“主页”等等都和它拉上了一些关系。甚至还有一种“Internet 综合症”的说法,对许多人狂热的上网行为提出了质疑。我们在这里有必要作一些深入的探讨,但在这之前,必须理解客户机/服务器系统的概念,这是充斥着许多令人迷惑的问题的又一个计算领域

1. 客户机/服务器计算

客户机/服务器系统的基本思想是我们能在一个统一的地方集中存放信息资源。一般将数据集中保存在某个数据库中,根据其他人或者机器的请求将信息投递给对方。客户机/服务器概述的一个关键在于信息是“集中存放”的。所以我们能方便地更改信息,然后将修改过的信息发放给信息的消费者。将各种元素集中到一起,信息仓库、用于投递信息的软件以及信息及软件所在的那台机器,它们联合起来便叫作“服务器”(Server)。而对那些驻留在远程机器上的软件,它们需要与服务器通信,取回信息,进行适当的处理,然后在远程机器上显示出来,这些就叫作“客户”(Client)。这样看来,客户机/服务器的基本概念并不复杂。这里要注意的一个主要问题是单个服务器需要同时向多个客户提供服务。在这一机制中,通常少不了一套数据库管理系统,使设计人员能将数据布局封装到表格中,以获得最优的使用。除此以外,系统经常允许客户将新信息插入一个服务器。这意味着必须确保客户的新数据不会与其他客户的新数据冲突,或者说需要保证那些数据在加入数据库的时候不会丢失(用数据库的术语来说,这叫作“事务处理”)。客户软件发生了改变之后,它们必须在客户机器上构建、调试以及安装。所有这些会使问题变得比我们一般想象的复杂得多。另外,对多种类型的计算机和操作系统的支持也是一个大问题。最后,性能的问题显得尤为重要:可能会有数百个客户同时向服务器发出请求。所以任何微小的延误都是不能忽视的。为尽可能缓解潜伏的问题,程序员需要谨慎地分散任务的处理负担。一般可以考虑让客户机负担部分处理任务,但有时亦可分派给服务器所在地的其他机器,那些机器亦叫作“中间件”(中间件也用于改进对系统的维护)。所以在具体实现的时候,其他人发布信息这样一个简单的概念可能变得异常复杂。有时甚至会使人产生完全无从着手的感觉。客户机/服务器的概念在这时就可以大显身手了。事实上,大约有一半的程序设计活动都可以采用客户机/服务器的结构。这种系统可负责从处理订单及信用卡交易,一直到发布各类数据的方方面面的任务——股票市场、科学研究、政府运作等等。在过去,我们一般为单独的问题采取单独的解决方案;每次都要设计一套新方案。这些方案无论创建还是使用都比较困难,用户每次都要学习和适应新界面,客户机/服务器问题需要从根本上加以变革!

2. Web 是一个巨大的服务器

Web 实际就是一套规模巨大的客户机/服务器系统。但它的情况要复杂一些,因为所有服务器和客户都同时存在于单个网络上面。但我们没必要了解更进一步的细节,因为唯一要关心的就是一次建立同一个服务器的连接,并同它打交道(即使可能要在全世界的范围内搜索正确的服务器)。最开始的时候,这是一个简单的单向操作过程。我们向一个服务器发出请求,它向我们回传一个文件,由于本机的浏览器软件(亦即“客户”或“客户程序”)负责解释和格式化,并在我们面前的屏幕上正确地显示出来。但人们不久就不满足于只从一个服务器传递网页。他们希望获得完全的客户机/服务器能力,使客户(程序)也能反馈一些信息到服务器。比如希望对服务器上的数据库进行检索,向服务器添加新信息,或者下一份订单等等(这也提供了比以前的系统更高的安全要求)。在Web 的发展过程中,我们可以很清晰地看出这些令人心喜的变化。

3. 脚本编制语言

插件造成了脚本编制语言的爆炸性增长。通过这种脚本语言,可将用于自己客户端程序的源码直接插入HTML页,而对那种语言进行解释的插件会在HTML 页显示的时候自动激活。脚本语言一般都倾向于尽量简化,易于理解。而且由于它们是从属HTML 页的一些简单正文,所以只需向服务器发出对那个页的一次请求,即可非常快地入。缺点是我们的代码全部暴露在人们面前。另一方面,由于通常不用脚本编制语言做过份复杂的事情,所以这个问题暂且可以放在一边。

4. Java

如果说一种脚本编制语言能解决80%的客户端程序设计问题,那么剩下的20%又该怎么办呢?它们属于一些高难度的问题吗?目前最流行的方案就是Java。它不仅是一种功能强大、高度安全、可以跨平台使用以及国际通用的程序设计语言,也是一种具有旺盛生命力的语言。对Java 的扩展是不断进行的,提供的语言特性和库能够很好地解决传统语言不能解决的问题,比如多线程操作、数据库访问、连网程序设计以及分布式计算等等。Java 通过“程序片”(Applet)巧妙地解决了客户端编程的问题。

程序片(或“小应用程序”)是一种非常小的程序,只能在Web 浏览器中运行。作为Web 页的一部分,程序片代码会自动下载回来(这和网页中的图片差不多)。激活程序片后,它会执行一个程序。程序片的一个优点体现在:通过程序片,一旦用户需要客户软件,软件就可从服务器自动下载回来。它们能自动取得客户软件的最新版本,不会出错,也没有重新安装的麻烦。由于Java 的设计原理,程序员只需要创建程序的一个版本,那个程序能在几乎所有计算机以及安装了Java 解释器的浏览器中运行。由于Java 是一种全功能的编程语言,所以在向服务器发出一个请求之前,我们能先在客户端做完尽可能多的工作。例如,再也不必通过因特网传送一个请求表单,再由服务器确定其中是否存在一个拼写或者其他参数错误。大多数数据校验工作均可在客户端完成,没有必要坐在计算机前面焦急地等待服务器的响应。这样一来,不仅速度和响应的灵敏度得到了极大的提高,对网络和服务器造成的负担也可以明显减轻,这对保障因特网的畅通是至关重要的。与脚本程序相比,Java 程序片的另一个优点是它采用编译好的形式,所以客户端看不到源码。当然在另一方面,反编译Java 程序片也并不是件难事,而且代码的隐藏一般并不是个重要的问题。大家要注意另外两个重要的问题。正如本书以前会讲到的那样,编译好的Java 程序片可能包含了许多模块,所以要多次“命中”(访问)服务器以便下载(在Java 1.1 中,这个问题得到了有效的改善——利用Java 压缩档,即JAR 文件——它允许设计者将所有必要的模块都封装到一起,供用户统一下载)。在另一方面,脚本程序是作为Web 页正文的一部分集成到Web 页内的。这种程序一般都非常小,可有效减少对服务器的点击数。另一个因素是学习方面的问题。不管你平时听别人怎么说,Java 都不是一种十分容易便可学会的语言。如果你以前是一名

Visual Basic 程序员,那么转向VBScript 会是一种最快捷的方案。由于VBScript 可以解决大多数典型的客户机/服务器问题,所以一旦上手,就很难下定决心再去学习Java。如果对脚本编制语言比较熟悉,那么在转向Java 之前,建议先熟悉一下JavaScript 或者VBScript,因为它们可能已经能够满足你的需要,不必经历学习Java 的艰苦过程。

《Think in Java Tenth Edition》

1. 1 1 Java and Internet

Since Java is just another type of programming language, you may wonder why it's worth so much importance, why are so many people think it is a milestone in computer programming it? If you come from a traditional programming background, then the answer at the beginning is not very obvious. In addition to traditional Java programming to solve the problem outside, but also to solve programming problems World Wide Web (WWW) on.

1.1 1.1 What is the W e b?

Web word beginning somewhat generalities, it seems, "surfing", "online presence" and "Home", etc., and it drew a number of relationships. There is even a "Internet syndrome" was, for many avid online behavior questioned. Here we have a need to make some in-depth discussion, but before that, we must understand the concept of client / server system, which is filled with many confusing issues another computing.

1 client / server computing

The basic idea of client / server system is that we can focus on stored information resources in a unified place. The data set is generally stored in a database, at the request of other people or machines deliver information to each other. Client / server is a critical overview of the information that is "central repository" of. So we can easily change the information, and then modified the dissemination of information to the consumer information. The various elements together, and information storage, software, and information and software used to deliver information to the machine where they are together they called the "server" (Server). And for those software resides on a remote machine, they need to communicate with the server to retrieve the information, appropriate treatment, and then displayed on the remote machine, which is called "client" (Client). So , the basic concept of a client / server is not complicated . A major issue to note here is that a single server needs while providing services to multiple clients. In this mechanism , usually ultimately, a database management system that allows designers to be able to package the data into a table layout , for optimal use . In addition , the system often allows customers to new information into a server. This means that customers must ensure that the new data does not conflict with the new data from other clients , or that the need to ensure that data is not lost when added to the database ( using the terminology database , this is called a " transaction " ) . After the client software is changed , they must build on the client machine , and installation commissioning . All of these make the problem becomes much more complex than we generally think. In addition, support for a variety of computer and operating system types is also a big problem. Finally, the performance problem is particularly important : There may be hundreds of customers at the same request to the server . So any slight delay

Are not ignored. To alleviate potential problems as possible , programmers need to deal with the burden of decentralized tasks carefully . Generally considered part of the burden so that the client processing tasks , but other machines can sometimes be distributed to the server location , those machines are also called " middleware" ( Middleware is also used to improve the maintenance of

the system ) .So when the realization that others publish information on such a simple concept can become very complex. Sometimes even lead to the complete feeling of knowing how to start. The concept of client / server at this time it can flourish. In fact, about half of all construction activity programming client / server can be used. Such a system may be responsible for processing orders and credit card transactions from until the release of all aspects of the various types of data the task - the stock market, scientific research, government operations, and so on. In the past, we generally taken as a separate issue separate solutions; every time to design a new program. Whether these programs are more difficult to create or use, each user must learn and adapt to the new interface, client / server issues need to be fundamentally change!

2. Web is a huge server

Web is actually a huge client / server system. But it 's more complicated situation , because all servers and clients are present in a single network at the same time . But we do not need to know further details , because the only concern is to establish a connection with a server , and to deal with it ( even though it may have to search for the correct servers worldwide ) . In the beginning , this is a simple process one-way operation . We send out a request to a server , it returns a file to us , because the machine browser software ( ie "Customer" or " Client" ) is responsible for interpreting and formatting and display correctly on the screen in front of us

Out . But people soon will not be satisfied with just passing from one web server . They want to get a full client / server capabilities , enabling customers ( program ) can feedback some information to the server. For example, in the hope that the database on the server to retrieve, add new information to the server, or under an order , etc. ( This also provides higher security requirements than the previous system ) . In the Web development process, we can clearly see that these changes cause heart joy .

3scripting language

Plug-in caused an explosive growth in scripting language. With this scripting language can be used for your own client program source code directly into HTML pages, and the interpretation of that language will automatically activate the plug when the HTML page is displayed. Scripting languages are generally inclined to try to simplify and easy to understand. And because they are simple text dependent HTML pages, so just issued a request for that page to the server, you can very quickly into. The disadvantage is that our code all exposed in front of people. On the other hand, due to the scripting language do not usually overly complicated, so this problem can be put aside for the time being.Real-oriented scripting language to solve specific types of problems, mainly related to how to create richer, more interactive capabilities of the graphical user interface (GUI). However, the scripting language may be able to solve 80% of client-side programming problem. Y ou may encounter problems in that 80% completely inside. And because the purpose scripting language is simplified and fast as possible, so before considering other more complex schemes (such as Java and ActiveX), should first think about the scripting language is feasible. 4. Java

If you speak a scripting language can solve 80% of the client program design issues, the remaining 20% how should we do it? They belong to some difficult questions? The most popular program is Java. Not only is it a powerful, highly secure, cross-platform use, and internationally accepted programming language, but also a kind of language vitality. For Java extensions are ongoing to provide language features and library can be a good solution to the problem can not be solved in traditional languages, such as multith reading, database access, networking programming

and distributed computing. By Java "applet" (Applet) cleverly solved the problem of client-side programming.

Applet ( or " applets " ) is a very small program , can only run in a Web browser. As part of the Web page , the program will automatically download the piece of code back ( this and the pictures on the page almost ) . After activation procedures tablets, it will perform a program. One advantage of the program is reflected in the piece : slice through the program , once the user needs the client software , the software can automatically download back from the server. They automatically get the latest version of the client software , no mistakes , no trouble re- installed. Due to the design principles of Java programmers only need to create a version of the program , the program can run on almost all computers and browsers installed in the Java interpreter . Since Java is a full-featured programming language , so before sending a request to the server , we can finish first in the client as much work . For example , no longer need to send a request form via the Internet , and then determine whether the server where there is a spelling error or other parameters . Most data on the client side validation work can be completed , there is no need to sit in front of computer anxiously awaiting response from the server . Thus , not only the sensitivity and response speed has been greatly improved, and the burden on the network server can be significantly reduced due to which the flow of Internet security is critical . Compared with the scripts , Java applet Another advantage is that it uses the compiled form , so the client can not see the source code. Of course on the other hand , Decompiled Java applet is also not a difficult task, but the code is generally not a major hidden problems . We should pay attention to two other important issues. As will be mentioned as the previous book , compiled Java applet may contain a number of modules , so several "hits" ( Access ) server to download ( in Java 1.1 , this problem has been effectively improved - Using Java archive files that JAR file - it allows designers to all the necessary modules are packaged together for users to download ) . On the other hand , the script program is part of a Web page as integrated into the body of the Web page . Such procedures are generally very small , can effectively reduce the number of clicks on the server . Another factor is the problem of learning . No matter how you usually hear people say , Java is not a very easy language can be learned. If you used a V isual Basic programmer , then turned VBScript would be one of the most efficient solution. Because VBScript can solve most typical client / server problems , so once started, it is difficult to determined to go to learn Java. f you are familiar with scripting languages, so before turning Java, it is recommended to familiarize yourself with the JavaScript or VBScript, as they may have been able to meet your needs, do not have to go through the arduous process of learning Java.

英文文献翻译

中等分辨率制备分离的 快速色谱技术 W. Clark Still,* Michael K a h n , and Abhijit Mitra Departm(7nt o/ Chemistry, Columbia Uniuersity,1Veu York, Neu; York 10027 ReceiLied January 26, 1978 我们希望找到一种简单的吸附色谱技术用于有机化合物的常规净化。这种技术是适于传统的有机物大规模制备分离,该技术需使用长柱色谱法。尽管这种技术得到的效果非常好,但是其需要消耗大量的时间,并且由于频带拖尾经常出现低复原率。当分离的样本剂量大于1或者2g时,这些问题显得更加突出。近年来,几种制备系统已经进行了改进,能将分离时间减少到1-3h,并允许各成分的分辨率ΔR f≥(使用薄层色谱分析进行分析)。在这些方法中,在我们的实验室中,媒介压力色谱法1和短柱色谱法2是最成功的。最近,我们发现一种可以将分离速度大幅度提升的技术,可用于反应产物的常规提纯,我们将这种技术称为急骤色谱法。虽然这种技术的分辨率只是中等(ΔR f≥),而且构建这个系统花费非常低,并且能在10-15min内分离重量在的样本。4 急骤色谱法是以空气压力驱动的混合介质压力以及短柱色谱法为基础,专门针对快速分离,介质压力以及短柱色谱已经进行了优化。优化实验是在一组标准条件5下进行的,优化实验使用苯甲醇作为样本,放在一个20mm*5in.的硅胶柱60内,使用Tracor 970紫外检测器监测圆柱的输出。分辨率通过持续时间(r)和峰宽(w,w/2)的比率进行测定的(Figure 1),结果如图2-4所示,图2-4分别放映分辨率随着硅胶颗粒大小、洗脱液流速和样本大小的变化。

论文外文文献翻译3000字左右

南京航空航天大学金城学院 毕业设计(论文)外文文献翻译 系部经济系 专业国际经济与贸易 学生姓名陈雅琼学号2011051115 指导教师邓晶职称副教授 2015年5月

Economic policy,tourism trade and productive diversification (Excerpt) Iza Lejárraga,Peter Walkenhorst The broad lesson that can be inferred from the analysis is that promoting tourism linkages with the productive capabilities of a host country is a multi-faceted approach influenced by a variety of country conditions.Among these,fixed or semi-fixed factors of production,such as land,labor,or capital,seem to have a relatively minor influence.Within the domain of natural endowments,only agricultural capital emerged as significant.This is a result that corresponds to expectations,given that foods and beverages are the primary source of demand in the tourism economy.Hence,investments in agricultural technology may foment linkages with the tourism market.It is also worth mentioning that for significant backward linkages to emerge with local agriculture,a larger scale of tourism may be important. According to the regression results,a strong tourism–agriculture nexus will not necessarily develop at a small scale of tourism demand. It appears that variables related to the entrepreneurial capital of the host economy are of notable explanatory significance.The human development index(HDI), which is used to measure a country's general level of development,is significantly and positively associated with tourism linkages.One plausible explanation for this is that international tourists,who often originate in high-income countries,may feel more comfortable and thus be inclined to consume more in a host country that has a life-style to which they can relate easily.Moreover,it is important to remember that the HDI also captures the relative achievements of countries in the level of health and education of the population.Therefore,a higher HDI reflects a healthier and more educated workforce,and thus,the quality of local entrepreneurship.Related to this point,it is important to underscore that the level of participation of women in the host economy also has a significantly positive effect on linkages.In sum, enhancing local entrepreneurial capital may expand the linkages between tourism and other sectors of the host country.

快速外文文献翻译

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外文文献及翻译

外文文献及翻译 题目:利用固定化过氧化氢酶 回收纺织品漂染的废水 专业食品科学与工程 学生姓名梁金龙 班级B食品072 学号0710308119 指导教师郑清

利用固定化过氧化氢酶回收纺织品漂染的废水 Silgia A. Costa1, Tzanko Tzanov1, Filipa Carneiro1, Georg M. Gübitz2 &Artur Cavaco-Paulo1,? 1纺织工程系, 米尼奥大学, 4810吉马尔, 葡萄牙 2环境生物技术系, 格拉茨技术大学, 8010格拉茨, 奥地利 ?作者联系方式(Fax: +351 253 510293; E-mail: artur@det.uminho.pt) 关键词:过氧化氢酶的固定化,酶稳定,过氧化氢,纺织印染 摘要 过氧化氢酶固定在氧化铝载体上并用戊二醛交联,在再循环塔反应器和CSTR反应器中研究贮存稳定性,温度和pH值对酶的活性。固定化酶的在的活性维持在44%,pH值11(30?C),对照组是活性为90%,pH值7(80?C),过氧化氢酶固定化的半衰期时间被提高到2小时(pH12,60?C)。用过氧化氢漂白织物后,洗涤过程中的残留水被固定化酶处理,可以用于再次印染时,记录实验数据。 1 序言 由于新的法规的出台,从生态经济的角度来看(Dickinson1984年),对于纺织行业中存在的成本和剩余水域的污染问题,必须给予更多的关注。过氧化氢是一种漂白剂,广泛应用于工业纺织工艺(Spiro & Griffith1997年)。在去除H2O2时,会消耗大量的水和能源(Weck 1991, St?hr & Petry 1995),以避免对氧气敏感的染料(Jensen 2000)产生后续问题。过氧化氢酶可用于降低过氧化氢的含量(Vasudevan & Thakur 1994, Emerson et al. 1996),从而减少水分消耗或方便回收印染洗涤液。过氧化氢酶的使用主要问题出在漂白时温度和清洗液碱度过高。以前,我们试图通过筛选新的嗜热嗜碱的微生物(Paar et al. 2001)或使用不同的酶稳定剂(Costa et al. 2001)来解决此问题。但是染料与蛋白质之间的潜在相互作用(Tzanov et al. 2001a, b)表明,可溶性过氧化氢酶的使用是不恰当的。固定化过氧化氢酶的使用还有一种选择(Costa et al. 2001, Amar et al. 2000)。在这项研究中,我们对氧化铝进行共价固定并使用戊二醛作为交联剂,这种方法在商业中得到验证。本项研究的目的就是探讨过氧化氢酶的固定化动力学,及其稳定性和工艺条件,这将使我们能够应用此系统,以处理可能被用于清洗染色的反复使用的酒。 2 材料和方法 2.1 酶 Terminox(EC1.11.1.6),50L以上,由AQUITEX- Maia提供,葡萄牙产。 2.2 过氧化氢酶的固定化 取Al2O3颗粒或薄片(Aldrich),直径分别为3和7毫米,在45摄氏度下,先经浓度4%的γ-氨丙基三乙氧基硅烷(Sigma)烷基化,再放入丙酮中浸泡24小时。用蒸馏水洗涤硅烷化载体后,放入浓度为2%戊二醛水溶液中室温下浸泡2小时(Aldrich),重复清洗一次并在60?C下干燥1小时。取五克的烷基化载体,室温24?C下浸泡在25毫升粗酶制剂中(Costa et al. 2001)。得出,每克Al2O3

计算机网络-外文文献-外文翻译-英文文献-新技术的计算机网络

New technique of the computer network Abstract The 21 century is an ages of the information economy, being the computer network technique of representative techniques this ages, will be at very fast speed develop soon in continuously creatively, and will go deep into the people's work, life and study. Therefore, control this technique and then seem to be more to deliver the importance. Now I mainly introduce the new technique of a few networks in actuality live of application. keywords Internet Network System Digital Certificates Grid Storage 1. Foreword Internet turns 36, still a work in progress Thirty-six years after computer scientists at UCLA linked two bulky computers using a 15-foot gray cable, testing a new way for exchanging data over networks, what would ultimately become the Internet remains a work in progress. University researchers are experimenting with ways to increase its capacity and speed. Programmers are trying to imbue Web pages with intelligence. And work is underway to re-engineer the network to reduce Spam (junk mail) and security troubles. All the while threats loom: Critics warn that commercial, legal and political pressures could hinder the types of innovations that made the Internet what it is today. Stephen Crocker and Vinton Cerf were among the graduate students who joined UCLA professor Len Klein rock in an engineering lab on Sept. 2, 1969, as bits of meaningless test data flowed silently between the two computers. By January, three other "nodes" joined the fledgling network.

毕业论文英文参考文献与译文

Inventory management Inventory Control On 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 of

英文文献及中文翻译

毕业设计说明书 英文文献及中文翻译 学院:专 2011年6月 电子与计算机科学技术软件工程

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3英文文献及翻译格式示例

哈尔滨工业大学毕业设计(论文) 英文原文(原文也可以直接将PDF版打印) ASSESSING CREDIT OR DETERMINING QUANTITY? THE EVOLVING ROLE OF RATING AGENCIES Lynnette D. Purda* This version: April 21, 2011 Abstract Over the past ten years, credit rating agencies have come under intense criticism from both practitioners and academics, first for their failure to identify problems resulting in bankruptcies at Enron and Worldcom and second for providing overly optimistic ratings for structured finance products. While many investors question the value of rating agencies in light of these criticisms, they have proven remarkably resilient. This paper provides a brief background on how rating agencies secured competitive advantages in evaluating credit quality. It then reviews the empirical evidence on the information content of ratings given these advantages. I argue that the information content of ratings stems from two intertwined sources: 1) information related to credit quality and 2) information related to the firm’s ability to access debt. Based on this evidence, I suggest that the dominant role for ratings today is as a benchmark for financial contracting. In this way, ratings remain influential in establishing the supply and demand of debt securities. 译文 评级机构的发展的作用评估信用还是决定数量? 本文:2011.4.21 摘要 在过去的十年,信用评级机构一直处于来自实践者和学者的激烈的批评中,首先他们未能发现问题,导致安然和世通破产;其次对结构性金融产品提供过于乐观的评级。虽然许多投资者因为这些批评对评级机构的价值提出了质疑,但他们仍然被证明是相当有活力的。这篇文章首先在评估机构如何在信用评级质量中获得竞争优势提供一个简单地背景介绍,然后考虑到这些优势回顾了一些信息内容方面的评级经验证据。个人认为信息内容的评级来自两种交织在一起(错综复杂)的来源:1)和信贷质量相关的信息;2)和公司获取债务资本能力相关的信息。以此为据,我建议当前评级的主导作用是作为基准的金融收缩。以这种方式,在建立债券的供应和需求方面评级仍然是有效的。 - -1

变电站_外文翻译_外文文献_英文文献_变电站的综合概述

英文翻译 A comprehensive overview of substations Along with the economic development and the modern industry developments of quick rising, the design of the power supply system become more and more completely and system. Because the quickly increase electricity of factories, it also increases seriously to the dependable index of the economic condition, power supply in quantity. Therefore they need the higher and more perfect request to the power supply. Whether Design reasonable, not only affect directly the base investment and circulate the expenses with have the metal depletion in colour metal, but also will reflect the dependable in power supply and the safe in many facts. In a word, it is close with the economic performance and the safety of the people. The substation is an importance part of the electric power system, it is consisted of the electric appliances equipments and the Transmission and the Distribution. It obtains the electric power from the electric power system, through its function of transformation and assign, transport and safety. Then transport the power to every place with safe, dependable, and economical. As an important part of power’s transport and control, the transformer substation must change the mode of the traditional design and control, then can adapt to the modern electric power system, the development of modern industry and the of trend of the society life. Electric power industry is one of the foundations of national industry and national economic development to industry, it is a coal, oil, natural gas, hydropower, nuclear power, wind power and other energy conversion into electrical energy of the secondary energy industry, it for the other departments of the national economy fast and stable development of the provision of adequate power, and its level of development is a reflection of the country's economic development an important indicator of the level. As the power in the industry and the importance of the national economy, electricity transmission and distribution of electric energy used in these areas is an indispensable component.。Therefore, power transmission and distribution is critical. Substation is to enable superior power plant power plants or power after adjustments to the lower load of books is an important part of power transmission. Operation of its functions, the capacity of a direct impact on the size of the lower load power, thereby affecting the industrial production and power consumption.Substation system if a link failure, the system will protect the part of action. May result in power outages and so on, to the production and living a great disadvantage. Therefore, the substation in the electric power system for the protection of electricity reliability,

文献综述,外文翻译,论文网站

文献综述怎么写 1) 什么是文献综述? 文献综述是研究者在其提前阅读过某一主题的文献后,经过理解、整理、融会贯通,综合分析和评价而组成的一种不同于研究论文的文体。 2) 文献综述的写作要求 1、文献综述的格式 文献综述的格式与一般研究性论文的格式有所不同。这是因为研究性的论文注重研究的方法和结果,而文献综述介绍与主题有关的详细资料、动态、进展、展望以及对以上方面的评述。因此文献综述的格式相对多样,但总的来说,一般都包含以下四部分:即前言、主题、总结和参考文献。撰写文献综述时可按这四部分拟写提纲,再根据提纲进行撰写工作。 前言,要用简明扼要的文字说明写作的目的、必要性、有关概念的定义,综述的范围,阐述有关问题的现状和动态,以及目前对主要问题争论的焦点等。前言一般200-300字为宜,不宜超过500字。 正文,是综述的重点,写法上没有固定的格式,只要能较好地表达综合的内容,作者可创造性采用诸多形式。正文主要包括论据和论证两个部分,通过提出问题、分析问题和解决问题,比较不同学者对同一问题的看法及其理论依据,进一步阐明问题的来龙去脉和作者自己的见解。当然,作者也可从问题发生的历史背景、目前现状、发展方向等提出文献的不同观点。正文部分可根据内容的多少可分为若干个小标题分别论述。 小结,是结综述正文部分作扼要的总结,作者应对各种观点进行综合评价,提出自己的看法,指出存在的问题及今后发展的方向和展望。内容单纯的综述也可不写小结。 参考文献,是综述的重要组成部分。一般参考文献的多少可体现作者阅读文献的广度和深度。对综述类论文参考文献的数量不同杂志有不同的要求,一般以30条以内为宜,以最近3-5年内的最新文献为主。 2、文献综述规定 1. 为了使选题报告有较充分的依据,要求硕士研究生在论文开题之前作文献综述。 2. 在文献综述时,研究生应系统地查阅与自己的研究方向有关的国内外文献。通常阅读文献不少于30篇,且文献搜集要客观全面 3. 在文献综述中,研究生应说明自己研究方向的发展历史,前人的主要研究成果,存在的问题及发展趋势等。 4. 文献综述要条理清晰,文字通顺简练。 5. 资料运用恰当、合理。文献引用用方括号[ ]括起来置于引用词的右上角。 6. 文献综述中要有自己的观点和见解。不能混淆作者与文献的观点。鼓励研究生多发现问题、多提出问题、并指出分析、解决问题的可能途径,针对性强。 7. 文献综述不少于3000字。 3、注意事项 ⒈搜集文献应尽量全。掌握全面、大量的文献资料是写好综述的前提,否则,随便搜集一点资料就动手撰写是不可能写出好的综述。 ⒉注意引用文献的代表性、可靠性和科学性。在搜集到的文献中可能出现观点雷同,有的文献在可靠性及科学性方面存在着差异,因此在引用文献时应注意选用代表性、可靠性和科学性较好的文献。 ⒊引用文献要忠实文献内容。由于文献综述有作者自己的评论分析,因此在撰写时应分清作者的观点和文献的内容,不能篡改文献的内容。引用文献不过多。文献综述的作者引用间接文献的现象时有所见。如果综述作者从他人引用的参考文献转引过来,这些文献在他人

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步进电机的知识 什么是步进电机: 步进电机是一种把电脉冲转化为角位移的执行机构。通俗的说:当驱动程序收到一个步进脉冲信号,将驱动步进电机轴旋转一个固定的角度(步进角)。您可以通过控制脉冲个数来控制角位移,从而达到准确定位的目的;同时,你可以通过控制脉冲频率来控制电机的旋转速度和加速度,实现速度控制的目的。 步进电机的种类: 步进电机分为三种:永磁式(PM),反应式(VR)和混合式(HR)永磁式步进电机一般为两相,转矩和体积较小,步进角一步7.5度或15度;反应式一般有三相可以实现大转矩输出,步进角一般是1.5度,但噪声和振动大。在欧洲和美洲80个国家已被淘汰;混合式步进是混合了永磁式和反应的优势。它由两相和五相:一般两相的步距角是1.8度,而的五相步距角为0.72度。是使用最广泛的的步进电机。 步进电机允许的最高表面温度 步进电机温度过高首先会的磁性材料退磁,导致转矩降低甚至失步,电机表面温度允许的最大值取决于的磁性材料退磁点;一般来说,磁性材料退磁点在摄氏130度以上有些材料甚至高达摄氏200度高,所以步进电机表面温度在摄氏80-90度是正常的。 步进电机精度为多少?是否累积 一般步进电机的精度为步进角的3-5%,且不累积 如何确定步进电机驱动器直流电源 A.电压确定 混合式步进电机驱动器的电源电压范围较广(比如IM483的供电电压12?48VDC),电源电压通常根据电机的转速和响应要求来选择。如果要求较快的运行速度较高的响应速度就选用较高的电压,但注意电源电压的峰值不能超过驱动器的最大输入电压,否则可能会损坏驱动器。 B.电流确定 电源电流一般根据输出相电流I来确定。如果采用线性电源,电源电流一般可取I的1.1?1.3倍;如果采用开关电源,电源电流一般可取I的1.5?2.0倍。 步进电机的主要特性 在步进电机关机时要确保没有脉冲信号,当电机运行时 如果加入适当的脉冲信号,它会转过一定的角度(称为步距角是)。转速与脉冲频率成正比。 2龙式步进电机步距角7.5度,旋转360度,需要48个脉冲来完成。 3步进电机具有快速启动和停止的优良特性。 4只要改变脉冲,可以很容易地改变电机轴旋转的方向。 因此,目前的打印机,绘图仪,机器人设备以步进电机作为动力核心。 步进电机控制的例子 我们以四相单极步进电机为例: 四个相绕组引出四个相和两个公共线(连接到正极)。一相接地。会被激发,。我们使用四相八拍控制,即第1阶段第2阶段交替反过来,会提高分辨率。步距角0.9°,可以转移到控制电机励磁是为了转移如下: 如果电机反转的要求,传输的激励信号可以逆转的。2控制方案 控制系统框图如下

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