科技论文范文3000字英文，英语科技论文

1，英语科技论文

文献是原始文献的代表，它提供了原始文献的信息内容，但不能代替原始文献（即一次文献），因为其内容已大大简化。　　文献本身给读者一个信息，即该篇文献所包含的主要概念和讨论的主要问题，帮助科技人员决定这篇文献对自己的工作是否有用。　　《美国工程索引》（The Engineering Index）是世界最有名也是最大的检索刊物之一。每月出版一期月刊，报导世界工程文献文摘一万三千至一万四千条，每期有刊附的主题索引与作者索引，每年还另出版年卷本和年度素引，年度索引还增加了作者单位索引，出版形式有印刷版（期刊形式），电子版（磁带）及缩微胶片，曾出版过检索卡片，已于75年停止发行。　　文摘的种类（Type of Abstracts）　　按美国工程信息公司编辑部（Ei编辑部）的分类，文摘分为指示性文摘与信息性文摘，或者两者结合的文摘。　　信息性文摘（Information Abstracts）一般包括了原始文献某些重要内容的梗概，主要由以下三部分组成：　　（1）目的：主要说明作者写此文章的目的，或说本文主要要解决的问题。　　（2）过程及方法：主要说明作者主要工作过程及所用的方法，也包括众多的边界条件，使用的主要设备和仪器。　　（3）结果：作者在此工作过程最后得到的结果和结论，如有可能，尽量提一句作者所得结果和结论的应用范围和应用情况。　　信息性文摘多用于科技杂志或科技期刊的文章，也用于会议录中的会议论文及各种专题技术报告。　　指示性文摘（Indicated Abstracts）仅指出文献的综合内容，适用于综述性文献，图书介绍及编辑加工过的专著等。综述性文献最常见的如某技术在某时期的综合发展情况；或某技术在目前的发展水平，及未来展望等。总之这种文献是综述情况而不是某个技术工艺，某产品，或某设备的研究过程。　　一般情况下信息性文摘占有绝大部分比例。文章由www.abclunwen.com 提供

英语科技论文

2，一篇关于it的英语科技文章

Information technology (IT), as defined by the Information Technology Association of America (ITAA), is "the study, design, development, implementation, support or management of computer-based information systems, particularly software applications and computer hardware." IT deals with the use of electronic computers and computer software to convert, store, protect, process, transmit, and securely retrieve information.Today, the term information has ballooned to encompass many aspects of computing and technology, and the term has become very recognizable. IT professionals perform a variety of duties that range from installing applications to designing complex computer networks and information databases. A few of the duties that IT professionals perform may include data management, networking, engineering computer hardware, database and software design, as well as the management and administration of entire systems. Information technology is starting to spread farther than the conventional personal computer and network technology, and more into integrations of other technologies such as the use of cell phones, televisions, automobiles, and more, which is increasing the demand for such jobs.When computer and communications technologies are combined, the result is information technology, or "info-tech". Information technology is a general term that describes any technology that helps to produce, manipulate, store, communicate, and/or disseminate information.

一篇关于it的英语科技文章

3，求一篇英语科技小论文

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A Flow Shop with Compatibility Constraints in a Steelmaking Plant* Abstract We present a scheduling methodology for applications where the generation of schedules is constrained by antagonistic and vague knowledge. Besides temporal and capacity constraints, compatibility constraints between consecutive jobs are managed. We model the vague constraints and uncertain data by fuzzy set theory. The importance of single jobs and the difficulty to schedule them is defined on the different constraints and is used to control the generation of schedules. A preliminary schedule is generated by considering the important jobs and those that are difficult to schedule first. Easy or not so important jobs are scheduled later. Finally, the achieved schedule is “repaired” until a schedule is found that achieves a given level of satisfaction. Since the goodness of solutions is rated by fuzzy sets, robust schedules achieve better evaluations than weak schedules. However, if no robust solution is found constraints will be relaxed. This methodology is appropriate for applications in process engineering where uncertain knowledge is dominant. We explain the methodology with a case study from a steelmaking plant for high-grade steel流动性约束与铺在炼钢厂* 摘要我们提出一个调度方法的应用产生的时间表而受到限制对立和模糊的知识。除了时间和能力的限制，兼容性限制之间连续工作的管理。我们模型的模糊和不确定的制约因素数据的模糊集理论。单一的重要性和困难的工作安排次时间是指在不同的制约因素，是用来控制生成的时间表。初步安排是考虑到所产生的重要的工作和那些有困难的时间表第一。容易或不那么重要的工作计划之后。最后，实现的时间表是“修复” ，直到一个时间表，发现达到某一特定的满意程度。因为善良的解决方案是评价模糊集，强大的时间表实现更好的评价比弱时间表。但是，如果没有强有力的解决办法是找到制约将会放宽。这种方法适合于工程应用过程中在不确定性知识为主。我们解释方法，个案研究从炼钢厂的高档钢材。但愿能帮到你，希望采纳！

求一篇英语科技小论文