Good afternoon, teachers and schoolmates. Thanks for your attending! I come from Class4, and I am Zhou Zhimei. My supervisor is Miss Li.

Today, the title of my paper is An Eco-feminist reading of Tess’ Tragedy in Tess of D’Urbervilles. Eco-feminists hope to arouse people's ecological consciousness and awareness of gender equality, establishing a tolerant society where harmony maintains between nature, women and men. Hardy thinks that historical changes in transitional society imply failure and regret. Especially for Women who are related to nature, industrial civilization and modem life separate them from nature. I use the literary theory of Eco-feminism to analyze the root of Tess’ tragedy in Thomas Hardy’s Tess of D’Urbervilles from the relationships between Tess and nature, the social economic and idea.

In the main part of my paper, I divide it to three parts. The first part is theoretical basis of eco-feminism; in this chapter feminism and eco-feminism will be presented and discussed, and important theoretical sources will be reviewed and literary terms will be defined and illustrated. The second part is introduction to the work and the hero image; this chapter is mainly about introduction to the book and the writer and analysis of characters in Tess of D’Urbervilles. The third part is exploration of the causes of Tess’ tragedy in eco-feminism; it can be divided into Tess’ tragedy and the root causes; the root causes are Tess’ ecological revolt against civilization, the social economic and the social idea.

Through the analysis of the root of Tess’ tragedy, readers can not only deeply understand the fact that civilization is built up at the cost of destruction of nature, but also realize the importance of being in harmonious relationship with nature.

第二篇：答辩 自我介绍

自我介绍

各位老师好，我是机制081班的，我的名字是***。我毕业论文的题目是“PLC在1500kg/h推杆式淬火炉中的应用”，下面我就来简单介绍一下本课题。

众所周知，国际电工委员会对PLC做了如下定义：（可编程序控制器是一种数字运算操作的电子系统，专为在工业环境下应用而设计。它采用可编程序的存储器，用来在其内部存储执行逻辑运算、顺序控制、定时、计数和算术运算等操作的指令，并通过数字式、模拟式的输入和输出控制各种类型的机械或生产过程。）让我们再来看看淬火炉的发展趋势，2012版的《中国淬火炉行业发展研究报告》称：（2007-20xx年，国内淬火炉产业正在实现稳步增长，产业规模不断提升，未来几年之内，会对淬火炉的自动化、可操作性提出更高的要求。）

那么，将PLC应用于淬火炉中有那些优势呢？

第一，系统构成灵活、扩展容易。通过数字量逻辑控制来对淬火炉的推杆进退、炉门升降、电动机正反转进行自动化控制，借此可以实现全程自动化，有助于提高生产率。模块型PLC提供多种I/O卡件或插卡，因此用户可较合理地选择和配置控制系统的I/O点数，功能扩展方便灵活，一般用于大中型控制系统，例如，淬火炉。

第二，编程简单，操作方便。采用简明的梯形图、逻辑图或语句表等编程语言，形象直观。另外，可在线修改程序，改变控制方案而不拆动硬件，这对于淬火炉这样的大型设备尤其适用。

第三，可编程逻辑控制器接点的响应快、速度高，每条二进制指令执行时间约100ns（纳秒，1微秒=1000纳秒），每条浮点数运行指令约3微秒，因此特别淬火炉这种适应控制要求高、相应要求快的应用需要。

以上三点促进了大型淬火炉自动化和可操作性的提升，也是本课题的特色。

在本课题中，通过对淬火炉相关参数的计算来对其硬件和软件进行设计，共有5张图纸，包括系统主电路图、PLC外部接线图、顺序功能图、和两张相关梯形图。