2021描述计算机WEB 2 0的专业英语

1、描述计算机Web 2 0的专业英语 计算机现在的社会上已经是完全进入我们的生活了，所以今天就给大家了有关于计算机的英语，大家可以参考一下哦 The phrase Web 2.0 was created by OReilly Media to refer to a supposed second generation of work-centric services available on the inter that let people collaborate and share information online in a new way - such as social workin

2、g sites, wikis, munication tools and folksonomies. OReilly Media, in collaboration with MediaLive International, used the phrase as a title for a series of conferences and since then it has bee a popular, if ill-defined and often criticized, buzzword amongst the technical and marketing munities. Int

3、roduction With its allusion to the version numbers that monly designate software upgrades, the phrase Web 2.0 trendily hints at an improved form of the World Wide Web, and the term has appeared in oasional use for several years. The more explicit synonym Participatory Web, emphasizing tools and plat

4、forms that enable the user to tag, blog, ment, modify, augment, select from, rank, and generally talk back to the contributions of other users and the general world munity has increasingly seen use as an alternative phrase. Some mentators regard reputation-based public wikis, like Wikipedia, as pion

5、eering examples of Web 2.0/Participatory Web technology. OReilly Media and MediaLive International popularized the term Web 2.0 for a conference they hosted after Dale Dougherty mentioned it during a brainstorming session. Dougherty suggested that the Web was in a renaissance, with changing rules an

6、d evolving business models. The participants assembled examples DoubleClick was Web 1.0; Google AdSense is Web 2.0. Ofoto is Web 1.0; Flickr is Web 2.0 rather than definitions. Dougherty recruited John Bat _e for a business perspective, and it became the first Web 2.0 Conference in October xx. A sec

7、ond annual conference was held in October xx. In their first conference opening talk, OReilly and Bat _e summarized key principles they believe characterize Web 2.0 applications: the Web as platform; data as the driving force; work effects created by an architecture of participation; innovation in a

8、ssembly of systems and sites posed by pulling together features from distributed, independent developers (a kind of open source development); lightweight business models enabled by content and service syndication; the end of the software adoption cycle (the perpetual beta); software above the level

9、of a single device, leveraging the power of The Long Tail. Earlier users of the phrase Web 2.0 employed it as a synonym for semantic web, and indeed, the two concepts plement each other. The bination of social working systems such as FOAF and XFN with the development of tag-based folksonomies and de

10、livered through blogs and wikis creates a natural basis for a semantic environment. Although the technologies and services that prise Web 2.0 are less powerful than an inter in which the machines can understand and extract meaning, as proponents of the Semantic Web envision, Web 2.0 represents a ste

11、p in its direction. As used by its proponents, the phrase refers to one or more of the following: The transition of websites from isolated information silos to sources of content and functionality, thus being puting platforms serving web applications to end users A social phenomenon referring to an

12、approach to creating and distributing Web content itself, characterized by open munication, decentralization of authority, freedom to share and re-use, and the market as a conversation A more organized and categorized content, with a far more developed deeplinking web architecture A shift in economi

13、c value of the web, possibly surpassing that of the dot boom of the late 1990s A marketing term to differentiate new web businesses from those of the dot boom, which due to the bust now seem discredited The resurgence of excitement around the possibilities of innovative web applications and services

14、 that gained a lot of momentum around mid xx Many find it easiest to define Web 2.0 by associating it with panies or products that embody its principles and Tim OReilly gave examples in his description of his four plus one levels in the hierarchy of Web 2.0-ness: Level 3 applications, the most Wev 2

15、.0, which could only exist on the inter, deriving their power from the human connections and work effects it makes possible and growing in effectiveness the more people use them. His examples were EBay, craigslist, Wikipedia, del.icio.us, Skype, Dodgeball, Adsense for Content, housingmaps. and Amazo

16、n. Level 2 applications, which can be offline but gain unique advantages from being online. His example was Flickr, benefiting from its shared photo database and munity-generated tag database. Level 1 applications are also available offline but gain features online. His examples were Writely, gainin

17、g group editing capability online and iTunes because of the music store portion. Level 0 applications would work as well offline. His examples were MapQuest, Yahoo! Local, and Google Maps. Mapping applications using contributions from users to advantage can be level 2. non-inter applications like em

18、ail, IM clients and the telephone. Examples other than those cited by OReilly include digg, Shoutwire, last.fm, and Technorati. Commentators see many recently-developed concepts and technologies as contributing to Web 2.0, including weblogs, linklogs, wikis, podcasts, RSS feeds and other forms of ma

19、ny to many publishing; social software, web APIs, web standards, online web services, and others. Proponents of the Web 2.0 concept say that it differs from early web development (retrospectively labeled Web 1.0) in that it moves away from static websites, the use of search engines, and surfing from

20、 one website to the next, towards a more dynamic and interactive World Wide Web. Others argue that the original and fundamental concepts of the are not actually being superseded. Skeptics argue that the term is little more than a buzzword, or that it means whatever its proponents want it to mean in

21、order to convince their customers, investors and the media that they are creating something fundamentally new, rather than continuing to develop and use well-established technologies. The retrospectively-labeled Web 1.0 often consisted of static HTML pages, rarely (if ever) updated. They depended so

22、lely on HTML, which a new Inter user could learn fairly easily. The suess of the dot- era depended on a more dynamic Web (sometimes labeled Web 1.5) where content management systems served dynamic HTML web pages created on the fly from a content database that could more easily be changed. In both se

23、nses, so-called eyeballing was considered intrinsic to the Web experience, thus making page hits and visual aesthetics important factors. Proponents of the Web 2.0 approach believe that Web usage has started increasingly moving towards interaction and towards rudimentary social works, which can serv

24、e content that exploits work effects with or without creating a visual, interactive web page. In one view, Web 2.0 sites act more as points of presence, or user-dependent web portals, than as traditional websites. They have bee so advanced new inter users cannot create these websites, they are only

25、users of web services, done by specialist professional experts. Aess to consumer-generated content facilitated by Web 2.0 brings the web closer to Tim Berners-Lees original concept of the web as a democratic, personal, and DIY medium of munication. Web 2.0是一个由OReilly Media创造的术语，它的应用可以让人了解目前万维网正在进行的一

26、种改变从一系列网站到一个成熟的为最终用户提供网络应用的服务平台。这种概念的支持者期望Web 2.0服务将在很多用途上最终取代桌面计算机应用。Web 2.0并不是一个技术标准，不过它包含了技术架构及应用软件。它的特点是鼓励作为资讯最终利用者透过分享，使到可供分享的资源变得更丰盛;相反的，过去的各种网上分享方式则显得支离破碎。 概览 Web(在这里，指代“Web 1.0”)最早的概念包括不常更新(甚至不更新)的静态HTML页面。而.时代的成功则是依靠一个更加动态的Web(指代“Web 1.5”)，其中CMS(内容管理系统)可以从不断变化的内容数据库中即时生成动态HTML页面。从这两种意义上来说，所

27、谓的眼球效应则被认为是固有的Web感受，也因此页面点击率和外观成为了重要因素。 Web 2.0的支持者认为Web的使用正日渐以交互性和未来的社会性网络为导向，所提供的服务内容，通过或不通过创建一个可视的、交互的网页来充分挖掘网络效应。某种观点认为，和传统网站相比，Web 2.0的网站更多表现为Point of presence或者是依赖用户的门户网站。 另一方面，其实早在1999年，著名的管理学者彼得杜拉克 (Peter F. Drucker)就曾指出当时的资讯科技发展走错了方向，因为真正推动社会进步的，是Information Technology里的Information，而不是Techn

28、ology。若然单单着重技术层面而忽略了资讯的话，就只是一具空的躯壳，不能使社会增值。而Web 2.0很明显是透过参与者的互动：不论是、为内容索引或评分，都能够使他们所使用的平台增值。透过参与者的互动，好的产品或资讯本著它的口碑，从一小撮使用者扩展到一大班人，一但超过了临界质量，就会“像病毒一样广泛流传”(葛拉威尔，xx)。 该词的 有不少人以为Web 2.0是一个技术的标准，其实这是个美丽的误会，因为Web 2.0只是一个用来阐述技术转变的术语。这个术语是由OReilly Media的Dale Dougherty 和 MediaLive 的 Craig Cline 在共同合作的脑力激荡(br

29、ain storming)会议上提出来的。Dougherty提出了Web目前正处于复兴时期，有着不断改变的规则和不断演化的商业模式。而Dougherty则是举例说明“DoubleClick是Web 1.0，Google AdSense 则是Web 2.0。 Ofoto是Web 1.0;Flickr 则是Web 2.0”，而不是给出确切的定义，和补充一个商业前景，同时OReilly Media、Bat _e和MediaLive 在xx年10月启动了第一个Web 2.0大会。第二次的年会已在xx年10月举办。 在他们的会议开场白上，OReilly和Bat _e总结了他们认为的表现了Web 2.0应

30、用特色的一些关键原则： 将Web作为平台; 驾驭群体智慧 资料将变成未来的“Intel Inside”; 软件不断发行与升级的循环将会终结(“永久的Beta版”) 轻量型程序设计模型; 通过内容和服务的联合使轻量的业务模型可行; 软件执行将跨越单一设备 丰富的使用者体验 分享和参与的架构 所驱动的网络效应; 通过带动分散的、独立的开发者把各个系统和网站组合形成大汇集的改革; 拉动长尾的能力; 快速的反应与功能新增 双向的互动 这种软件发布中的版本号的使用从某一方面也暗示了整个Web已经被看作是一种有着重大增值意义的新产品，而且正在被重新编写和发布。 同语义网的比较 对于Web 2.0这个词的一

31、个较早的出现是作为语义网的同义词。这两个概念有点相似而且是互补的。结合了基于标签的Folksonomy(分众分类法)的社会性网络系统如FOAF和XFN，以及通过Blog和Wiki进行发表，已经创建了一个语义环境的天然基础。 技术 Web 2.0技术基础比较复杂而且还在演化中，但可以肯定的是包括服务器端软件、内容联合组织、消息协议、基于标准的浏览器和各种不同的客户端应用程序。(一般会避免使用非标准浏览器的一些增强功能和插件)这些不同但是互补的方法提供了Web2.0信息存储、创建和分发的能力，这些能力远远超出了先前人们对网站的期望。 如果一个网站使用了以下一些技术作为特色的话，就说他是利用了Web

32、 2.0技术： 技术方面： CSS, 语义化有效的XHTML标记，和Microformats 不突出的丰富应用技术(例如Ajax) 数据的联合，RSS/ATOM RSS/ATOM数据的聚合 规则且有意义的URL 支持对网志发帖子 REST 或者是XML Web服务API 某些社会性网络方面 通用概念： 网站不能是封闭的它必须可以很方便地被其他系统获取或写入数据。 用户应该在网站上拥有他们自己的数据。 完全地基于Web 大多数成功的Web 2.0网站可以几乎完全通过浏览器来使用 内容联合组织 Web 2.0的首要的也是最重要的发展，包括了使用标准化协议的网站内容的联合，这可以让最终用户在其他环境

33、中使用网站的数据，包括另一个网站、浏览器插件、或者一个单独的桌面应用程序。这些联合协议包括RSS，资源描述框架(RDF)，和Atom，这些都是基于XML的。特别的协议如FOAF和XFN(XHTML朋友网络)这两者都是为了社会性网络开发的扩展了网站的功能或者可让最终用户不集中于网站就可以进行交互。参见microformats，以查询更多的专门数据格式。 由于发展太快，很多这些协议都是事实上的标准而不是正式的标准。 Web服务 双向的消息协议是Web 2.0架构的关键元素之一。两个主要的类型是RESTful和SOAP方法。REST(Representational State Transfer)表

34、示了一种Web服务 客户端传送所有的事务的状态。SOAP(Simple Object Aess Protocal)和类似的轻量方法都依赖服务器来保存状态信息。两种情况下，服务是通过一个API调用的。这个API常常是根据网站的特殊需求定义的，但是标准的Web服务API(例如，给Blog发帖)的API依然被广泛使用。一般来说Web服务的通用语言是XML，但并不一定，还存在大量不同的其他语言，如JSON，YAML等。 最近，出现了一个被称之为Ajax的混合形式，用来增强基于浏览器的Web应用的用户体验。这可以用于一些特别的形式(如Google Maps、UrMap)或是一些开放的形式，可以直接利用Web服务API、数据联合，甚至是绘画。 宽泛得说，联合是一种Web服务的形式，但是Web服务形式的使用却不是很常见的。 参见 WSDL(Web服务描述语言)和Web服务规范表。 服务器软件 Web 2.0 的功能是在已有的Web服务器架构上建立的，但是更加强调后台软件。数据联合不仅仅是名称上和内容管理发布方法不同，而且Web服务要求更加强壮的数据库和工作流的支持，并且变得与传统的企业内部网的应用服务器功能更加相似。供应商不管是用一个通用服务器方法，可以把所有需要的功能都集中到一个服务器平台上，或者是一个