1、，一个检索免费paper的好工具。 进入网页以后，可以看到他有三个功能，driectory web article ，其中article对我们很有帮助，你可以尝试输入你要找的文章，会有很多发现的!
2、，感觉不是很好用，内容也不是太多，主要靠用户添加网址，提供信息的搜索引擎，搜索功能也比较差，输入常见的关键词，往往找不到相匹配的内容。
3、，现点击后或跳转到http://www.emolecules.com ，在此搜索引擎里可以搜索到超过千万种化学品信息或相应的供应商，与Chemblink有点相似，但提供的化学品理化信息没有Chemblink详细，与其不同的是该搜索引擎可提供化学品结构式搜索(主页上有在线绘制化学结构式的搜索框)。
4、，(Online JournalSearch Engine，在线期刊搜索引擎)是一个强大的免费科学搜索引擎，通过OJOSE，你能查找、下载或购买到近60个数据库的资源。但是感觉操作比较复杂。
5、，一个关于计算机和信息科学的搜索引擎。
6、，专家个人主页搜索引擎。
今天的干货就是为大家介绍几个实用的抄袭率检测网站，同学们可以边写论文，边检测自己的抄袭率哦。
Turnitin
Turnitin是使用率最高的查重系统，大多数英国院校都使用这个系统，学生登陆学校网站之后可以将自己的论文上传到系统里，进行检测。
对于可不可以重复检测，不同的学校规定不同。学校老师使用的Turnitin的权限是论文检测后，会被系统收录，第二次再检测同一篇文章就会被算作抄袭。
不同学校、不同专业学科之间，重复率也不能一概而论，请咨询学校、老师或者学长学姐。一般来说低于10%比较稳妥，但是有的学校对重复率有要求，过低也不符合要求，简直了。
Turnitin根据颜色表明重复率，蓝色表明similarity为0，绿色表明0-24%，黄色表明25%-49%，橙色表明50%-74%，红色表明75%-100%，
Plagiarisma
这个网站既可以直接搜索文字(支持190多个语言)，可以针对某个网页查询，也可以上传文件查询。
不过对于文字来说，通过 Google 查询的选项只提供给注册用户。
Plagspotter
这个主页的画风在众多类似诈骗网站的论文查重网站中，算的上一股子清流了。
不仅可以查询一个网页，还可以使用他们的 Batch Search feature 查询整个网站。
即使是免费用户，也不用担心查询结果被限制哟~~
服务还包括每日自动监控你的内容并给出百分比数据等。主页下面还有详细的介绍搜索查询的原理。
Grammarly
一流的在线免费校对+剽窃检查工具。而且它有还一个浏览器扩展程序，不管你是在Twitter Facebook或是其它地方都能帮你检查语法和拼写错误。
只需要你注册一个Grammarly account ，你就可以随时随地登陆账号上传你的文章或是修改已经储存在上面的文章。
特别是 VocabularyEnhancement（提高词汇量）和 Plagiarism checker （剽窃检查）这两个功能很强大，而且基本都免费。
PolishMyWriting
只要把写好的文章或是段落粘贴在上面的文本框，系统就会自动识别里面的语法错误和拼写错误。
所有的拼写错误都会用红色标记出来，语法错误会用绿色帮你标记出来，最最重要的是PolishMyWriting还会贴心地用蓝色字体给出写作建议，简直不能更好用！
检测抄袭率的网站虽然有很多，但是结果通常都会有所偏差，不能作为依赖工具，只能作为借鉴。
同时，这些网站上的检测结果也不涵盖学生提交过的作业，也就是说如果你的论文和你其他同学交的论文很相似是不会被检测到的哦，但是老师可以在turnitin里看到。
所以，如果学校的turnitin能够查看抄袭率的话还是建议使用turnitin。
PS缩写的意思便是Personal Statement，也有的被叫为Statement of Purpose等，中文的翻译意思便是个人陈述。英国论文网给我们支招，写好一篇优异的PS目的不单单停留在证明你自己的才干，更重要的是要证明自己是这个program需求的。要知道They are always searching for the right person, not the best one. 尽管你很优异，但可能不适宜他们。这可能是许多牛人没有拿到好的offer的一个重要原因。
主张PS应该首要分为两个部分来写。一部分是要证明才干，这也分几个方面。首先是你的学习才干，如效果高，排名好，获过奖等。但只要是请求出国留学的童鞋信任这方面应该不会太差。
其次是研讨才干，这是一项重要因素。研讨履历多肯定是一个优势，要注重表述从中学到了什么技能，认识到什么问题，产生了什么新思维。假如能与此program老板正做的东西相关就更好了。千万不要流水账，不要与resume过多重复。再便是要有思维和潜力。对本科生来讲，尽管研讨履历少，但可塑性强。其他，一定要论说为什么你对此专业和研讨方向感喜好，这是教授们极其看重的一点。
PS的另一部分要证明你便是适宜他们的人，他们所需求的便是你可以奉献的。有针对性的把本身特点和校园特点结合起来。其他，你要论说为什么出国读书，为什么要读Ph.D.，为什么选择这个校园，还有你将来的工作方针。应该结合自己的履历和对专业的喜好来谈为什么这个program对自己特别有吸引力。
其他，行文不必特别追求文采的美丽。尤其是理科请求，要有慎重的态度。用specific的现实或数据下结论。从你的PS就能看出你的涵养和学术见识。
假如你具有足够好的英文水平，那最好自己写。因为最了解你的人是你自己。假如想要获取专门留学组织的帮助，你可以自己写一个初稿，然后由他们修改。与专门组织人员的有用和完全交流是非常重要的。
My education so far is characterized by indisputable excellence. During the four years of my undergraduate studies, my GPA was consistently the highest in my class of 135 students. As you can see from the transcripts of my academic record, I received straight A’s for all the courses except for first-year Physical Education. My graduation was rated “Outstanding”, the highest rating possible. An in-depth analysis of the ethical standards of Chinese auditors, the paper was later published in a quality professional journal as a seminal study of a rarely studied topic in China. As the unquestionably best student in my year, I was accepted into graduate studies by the university without the normally mandatory entrance examinations.
In recognition of my academic performance and other strengths, I was decorated with many honors and accolades during my undergraduate studies. I was elected the monitor of the class and the Vice President of the university’s Student Union, making me the most important female student leader on campus. Among the financial awards I won was the Jiageng Scholarship, the university’s most prestigious award named after its founder Chen Jiageng, one of the best known patriotic Chinese in the first half of this century. The Jiageng /scholarship is offered to only ten students each year, and the offer is usually presented to the recipients by the university’s president in person in a grand ceremony, as it was in 1996, when I got it.
In my undergraduate studies, I had broad academic interests, although I majored in accounting. I regularly read academic journals, both Chinese and international, to keep me abreast of the latest developments in accounting and other related fields. I devoted considerable time to learning such subjects as law and economics. My extensive knowledge provided me solid grounding as I narrowed down my research interest to professional ethics of accountants. In a country that has only an inchoate legal regime governing professional practice. Enforcing high ethical standards is both difficult and critical. But studies have been scant and haphazard so far. I am glad that I have made quite some contribution to the country’s discourse in this area.
My undergraduate studies were greatly enriched with a most rewarding internship program. As a CPA assistant working for the Accounting Firm affiliated to the university, I took part in the auditing of several major corporations. In the process, I learned not only to put my book knowledge in practice but also acquired first-hand knowledge of how Chinese accountants, operating under inadequate laws and regulations, handled difficult issues. Such knowledge has constituted an important part of the basis for my research on the ethical questions of Chinese accountants and auditors
In my graduate studies, I have broadened my intellectual horizon and refined my accounting expertise. The courses I took related to both theories and methodologies of accounting and auditing. But the more significant part of my learning is to be found perhaps not in the courses but in the research projects that I have taken part in together with my professors. I have, for example, helped my professors in compiling and editing a major textbook for the continuing education program of the ALL-China Association of Certified Accountants. The book, Cases of Auditing, has just been published and is expected to substantiate the curriculum of the continuing education program.
In my Ph. D. studies, I wish to focus my studies and research on auditing, particularly in relation to audit risk, auditor’s decision-making, ethics of auditing. I am also interested in accounting theories. I heard of Penn State University while I was still an undergraduate student, and I know that its accounting program is marked by selectivity and excellence. I hope that, by studying in your program, I will be able to build on my academic record so far for a promising career as a teacher in China a few years down the road.
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