Thesis和Dissertation之间有关系和区别

大致来说Thesis是本科生或硕士生写的，而dissertation是博士生写的毕业论文.
比较详细的区别是博士论文一旦通过就证明作者的水平足以在该专业领域当教授, 要有相当的原创性, 研究的方法要完善, 论证要更充分. Thesis的要求没有那么严格, 只有有作者独到的地方行.
博士论文的摘要或部分往往要达到能在专业领域相当水平的期刊发表 才行
比如哈佛的文科本科生就要求要写Thesis, 但一般一个学期就完成了. 博士论文往往要几年才能通过

• thesis : 既可指毕业论文、学位论文，又可指一般的为阐述学术观点而写的论文。

• dissertation : 书面语用词，指独立研究后所写的较为详细的专题文章；也可指学位论文。
  

If you've considered grad school—or simply know someone who has an advanced degree—you've likely heard about theses and dissertations. Both are long research papers that a student submits at the conclusion of his or her studies. Such papers are required in order to earn an advanced degree. But what's the difference between the two? Are the terms interchangeable? Here's the low-down.