化雨成冰
零度以下的气温，一整夜的雨，车身严严实实地裹了一层冰。坐在车里向外看，就像是打了Photoshop的“玻璃”滤镜。
出门摔了无数跤以后总结出来，虽然在雪地上走路可以用凌波微步，但是在实打实的冰上，必须要把脚踝蹦直蹦硬，然后摆好重心，这样即使打滑也是整个人平移，有如滑冰一般，不会摔。晚上出去倒一箱垃圾而不摔成功证实了这一猜想。
Leave a Comment February 1, 2011
蒙特卡罗法批作业
今天批完495份作业以后，天地突然清静的一刹那，猛然间醒悟过来，其实我批作业用的是蒙特卡罗方法，随机踩点，以偏概全，如果“错误很多”的假设可以成立的话，就自适应地去增加踩点数，最后还根据已经批完的作业情况，增加后续随机踩点的准确率。从这个角度想来，今后如何提高批作业的效率呢，无非就是再多学点统计呀。
1 Comment January 30, 2011
Elevator
When I was waiting for the elevator today, I was thinking about given the condition that I had waited for a longer time, and a small constant $$\delta$$, the probability that the elevator arrives in $$\delta$$ time is getting higher. So I kept waiting. I was waiting with confidence. After a very long time I found that the elevator was broken.
2 Comments January 7, 2011
Standard Breakfast
看过这个贴以后知道好好吃早餐以及好好养生是一种负责任的态度。经过我一段时间来的实践，发现这样一个搭配很不错，省时省力省钱，而且营养好，可以一直吃：
其中包括虾饺、杂粮粥、橙汁。虾饺可以在中国超市买到，4个1刀，还是不同种类的拼盘，一次吃4到8个差不多，用微波炉专用蒸笼可以在5分钟内搞定。杂粮粥用慢炖锅可以前一天晚上放上，第二天早上起来直接吃，不用花时间，而且粥里可以放皮蛋瘦肉笋尖做成“皮蛋瘦肉杂粮粥”，味道很不错。杂粮粥里的薏仁还是很好吃的。橙汁要数Minute Maid的最好喝。
这样整个算下来，一顿的成本在3刀左右。早上起来只要有10分钟的时间，就可以吃完。
Leave a Comment December 18, 2010
Living Chrismas Tree is Awesome
Again, I was shocked by Christian people in US. There are so many people volunteerily try their best to bring joy and happiness to people. The performance show tonight called “Living Chrismas Tree” is so carefully prepared and is awesome.
This is the so called living Chrismas tree, singing all the way of the performance.
Not until this scene did I realize that this show is about the story of Jesus’s born. I saw a shrunk model of this scene in Phil’s home. So nice.
In the original story of Jesus’s born, there were a lot of animals presented. It’s said that Mary was riding a donkey when Jesus was about to born. And later, three kings came to help Mary by riding camels. So in today’s show, there are actually real donkeys, camels, horses and goats presented.
Leave a Comment December 4, 2010
MathType
今天有生以来第一次花钱买正版软件，买的竟是MathType。最初是受骨头影响，觉得能盲打公式很帅，后来打着打着自己也会了。再后来用LaTeX写论文的时候，意外发现MathType跟LaTeX转来转去非常方便，于是就一直用它来写LaTeX。
很多人以能从最底层直接祼写为荣，不屑于用MathType，总劝我不要用MathType，要直接用LaTeX，这样的人往往也喜欢用vi来写C++程序，或者在论文标题里夹杂LaTeX并用两个$$括起来，或者在邮件里直接发连续N行的包含各种嵌套的LaTeX公式，或者在被问到一篇论文是啥的时候发来一堆BibTex，或者在写编译器的时候用汇编。可是在我看来，必要的基本功虽然重要，但是在进行创造性的工作的时候，则要尽量地简化工具，用最省力的方式，搭积木一样的去fast prototyping。如果每创造一样东西都要把最底层的东西重新reinvent一遍，久而久之热情就会被消磨。这也是为什么MATLAB得以大行其道的原因。对于计算机科学来说，它几乎是最好的fast prototyping工具。
再往后，随着在写论文时不断实践，我盲打MathType的技术也越来越娴熟，就发现根本没有必要再在纸上演算了。在电脑上开一个word然后用MathType来做推导，既清楚明白，又省力。而且电子的存储可以用很多方式有效存档，分门别类管理，不至于哪天想到哪个推导去一摞一摞的草稿纸里翻，还不一定翻得到。于是有一段时间，来实验室找我的人都发现我几乎一整天一整天的都在打公式，很纳闷。打得熟练以后，用MathType来做推导，是一件心旷神怡的事情。
再往后，来到OSU发现学校没有买MathType版权的时候，我几乎想也没想就自己买了一套。
不过买完以后，发现还是很值的，有很多新功能，比如说现在不仅仅能翻LaTeX，还针对各种软件都有设计，像Gmail, Outlook, WordPress都能支持。另外一个更好的功能是手写识别。这个对于公式来说真是太重要了，因为经常有时读论文发现一个符号不懂，想去Google上搜，却一丁点的线索都没有。一旦能手写以后，至少能知道LaTeX下它叫什么，然后把它人肉出来。以前还有一个网页程序也能做这个事，很方便，在这里，我用它成功找到了“$$\asymp$$”这个符号的意思。
Leave a Comment December 3, 2010
Teaching Practice 2: Optimization
This is the third presentation in my English Speaking and Teaching class, which will in some sense determine whether I can upgrade to the most advanced English Speaking and Teaching class next quarter. Hope this works.
It’s difficult to explain such an abstract concept in 7 minutes. I used the example of cooking cup noodles with a microwave oven to introduce optimization.
/video/TL504Apr_Optimization.flvLeave a Comment November 29, 2010
Chrismas Tree Decoration
Today I was invited to Philip and Elizabeth’s house to decorate their Chrismas tree together with their four kids and some Chinese friends.
This is the tree we finally decorated. And with a magic glass, the stars are sparkling, which is very beautiful.
I prepared some stuff for them to decorate, including the crosses which Phil and Elizabeth end up hang up on their own. Also, I just notice that there is a little loli in the picture.
Leave a Comment November 29, 2010
蛋包肉
我妈妈的特色菜，不知道怎么想出来的，煎蛋的时候一边放上肉脯包起来，像饺子似的，烧出来的蛋香和肉香在一起，很可口。后来我奶奶也学会了，再后来我也学会了，今天做了一锅，不过有的没包好，还淡了一点。
Leave a Comment November 27, 2010