Sunday, June 22, 2008

据同宿舍的小Q同学汇报,今天下午有一很NB的人(貌似老师)带着两台小本来到我们宿舍,对我的路由器进行了探察。切,偶是绝对的良民,在遵守国家法律学校章程的原则上充分地利用了net.henu.edu.cn赋予俺的网路资源……
不过,比别人多用了一个IP地址,再就是网通的8M流量的带宽,还有计划中的FTP服务器~~~
估计是网络中心最近又现开通了哪栋楼的教育网,于是就要用到先前闲置着的IP地址,sigh,还只是一个私网的IP而已,就冲到偶宿舍里来了。无奈,俺本人不在,台式机(BSD)的显示器也撤了,两个路由上面又都设置了很弱智很变态的密码……
NB是除偶之外第一个以IP方式登录交换机的人,并且,刷新了固件,那么,为什么不简单地重启一下交换机呢?

献给:可怜的某某老师,以及我无辜的4小时睡眠时间

Friday, June 20, 2008

a chinese signature

天黑虎狼跃,鬼笑万木森。不是行路夜,犹有夜行人。

Wednesday, June 18, 2008

Get Research Experience for Graduate Admissions

Graduate programs, especially PhD programs, highly value research experience. Without it, it's unlikely that you'll gain admission, regardless of your GPA. To make the short list of acceptances, you must demonstrate that you have what it takes to conduct research and thereby extend the field. Gain research experience as an undergraduate student and admissions committees will be more confident that you understand what research is all about and have the ability (and motivation) to do it.

How to Get Involved in Research
It's up to you to seek out opportunities to get involved in research. How? First, excel in your courses and take time to get to know faculty (e.g., stop by their office hours to ask intelligent questions, show them interesting articles or cartoons that relate to course content).

Faculty look for students who are motivated, bright, and personable. Do well in class and be generally pleasant, and they might approach you to ask if you're interested in helping out with some research.

But don't wait to be asked to get involved in research, take the initiative. Talk with faculty and let them know that you're interested in obtaining research experience. Ask if they need any help with projects or know someone who is looking for a volunteer to assist with research. Think back to classes that you've taken. Do any professors stand out? Did any talk about the research that they conduct? Perhaps a professor in your department has published an interesting article. Remember, that although having taken a class with the professor may help to break the ice, you should also approach professors whose work interests you, regardless of whether you've taken their classes.

If you find a professor who you'd like to work with, read a couple of his or her articles. This preliminary background reading will show the professor that you're serious, interested in assisting him or her, and motivated. Send the professor your resume and a cover letter mentioning the articles you've read and why their work interests you. Express your interest in assisting them with their work and include information such as your grade point average and the courses that you've taken. Ask to set up an appointment. When you meet with the professor, express your interest, and ask whether you may assist him or her. Most professors are glad to have an extra pair of hands to work on their research projects, but sometimes professors are overwhelmed with students who wish to assist them. If the professor doesn't need additional assistance, ask if he or she knows whether other professors are looking for research assistants.

While conducting research with faculty as an undergradute is useful in enhancing your graduate school application, recognize that in most cases your work will be unpaid. What do you get in return? Experience. You'll get to see what research is all about and get a taste as to whether it's for you. Sometimes students initially have luke-warm interests in research - they get involved because it will look good on their application to graduate school, but once they see what it's like to make new discoveries, they become enthralled with the process and realize that research is fascinating.

In addition to broadening your perspective on research, you might be able to get academic credit for your work as a research assistant. If you're heavily involved in the project and it's successful, you may receive an acknowledgment in a journal article, a presentation at a professional conference, or perhaps even coauthorship on a journal article.

An added benefit of working closely with a faculty member on his or her research is that the faculty member will get to know you well and can write a letter of recommendation that describes your potential for succeeding in graduate school. By working with you over time, he or she will be able to describe your skills and strengths in a much more detailed way than if you were simply a student in class.

What If Professors Aren't Doing Interesting Research?
Remember that your research experience doesn't have to be in your area of interest. Any research experience will help. Besides, sometimes it's good to get involved in different areas of research because you may discover new interests. As an undergraduate, a variety of broad experiences that provide you with a taste of several research areas is better than conducting research only in your area of interest. Of course, if you're completely disinterested in the research topic it might be difficult to remain motivated and do a good job. Understand your interest level and limits when deciding whether to assist a faculty member with his or her research because poor or inconsistent work will not be helpful and can hurt your chances for a persuasive letter of recommendation that benefits your application to graduate school. Regardless of the research topic, many of the tasks that research assistants complete can be tedious: copying, sharpening pencils, administering surveys, entering data into SPSS, and so on. Sure, some of these tasks are boring, but they're necessary for completing the research project.

Be a Responsible Research Assistant
If you get involved in research remember that the faculty member is depending on you. He or she can't afford to have assistants who are unreliable or careless. Agreeing to assist a faculty member with his or her research is a big commitment that you shouldn't take lightly. Your research tasks should come first - treat the research project as a class and be diligent. There's nothing worse than a student who is enthusiastic at first but disappears or performs inconsistent and careless work. The research project gets disrupted, tasks often must be completed again, and the faculty member loses faith in the student. If you find yourself in such a situation, you won't be able to ask the faculty member for a letter of recommendation. Also understand that faculty talk - other professors may learn about the quality of your work which can influence your interactions with them as well. In other words, if you're going to assist a professor with his or her research, be responsible or you may not like the consequences.

Monday, June 9, 2008

butterfly


任意一个圆,任意做一条弦EF,找到该弦的中点O,然后穿过这个中点任意做两条弦一条弦与圆的交点为A,B;另外一条弦与圆的交点为C,D;现在连接AC与BD分别交原来弦EF得到两个点G,H(注意不连接AD与BC,那样将与EF没有交点)请证明OG=OH
呵呵 这就是有名的蝴蝶定理