fun

一盘围棋,一开始他吃了我一条龙,领先80目,后来我竟然翻盘了

断断续续下围棋已经很多年了。小学的时候就开始接触,也没人教,全自学。水平业余低级水平,在OGS上是4级。下围棋纯属休闲娱乐。赢了很高兴,输了有时候气得我把鼠标都拍坏了。下围棋确实很耽误时间,一盘至少半
Xu Cui
3 sec read

两个聚会趣味游戏

心有灵犀之猜物件 两个人A和B宣称他们“心有灵犀”。为了证明这一点,B到另外一个房间,然后包括A在内的众人随机挑选一件周围的物品(比如一个杯子)。B回来后,A开始指着周围的一些物品问B。比如: A指碗
Xu Cui
7 sec read

NIRS知识红包竞猜

想了解近红外fnirs技术的同学,可以考虑参加我们周六中午的知识竞猜活动。因为心仪科技的慷慨赞助,我们今年的红包比往年大几倍,从5元涨到20元,最后还有大题,奖励100元的大红包。欢迎大家踊跃参加,也
Xu Cui
2 sec read

An interesting gamble

The other day I was walking on a street, along which there are a lot of booths where people play games to gamble. I stopped in front of one booth. The host was warm and we started to talk. “How to play?”, I asked. “Well, simple.R
Xu Cui
1 min read

VMWare Player: guest OS not full screen?

VMWare Player is a great free tool if you want to run multiple operating systems on one computer. For example, you may have a Mac but need to run a few programs on Windows. Instead of purchasing a new Windows computer, you can simply use VMWare Playe
Xu Cui
22 sec read

尖椒土豆丝与自由意志

饭店里,你拿着菜单,在思考是点西红柿炒鸡蛋还是尖椒土豆丝。这个问题显然很重要,因为你已经考虑了几分钟了。最后,你下定了决心,拍了脑瓜子,说,就要土豆丝了。你如释重负。旁边的服务员可能夸你,说你做出了最
Xu Cui
4 sec read

Evolution of man

Xu Cui
2 sec read

Octopus Paul, hypothesis, p-Value and significance

Null hypothesis (H0): Octopus Paul doesn’t have the ability to predict. Or, the probability that he predicts correctly on each event is 1/2. Data: In 2010 World Cup, Octopus Paul correctly predicted the outcomes of 8 games out of 8 games. p-Val
Xu Cui
16 sec read

Tower of sqrt(2)

What is the limit of this infinite exponential? Solution 1: $$x=\sqrt{2}^x$$ This leads to x=2 or 4 Solution 2: $$x=^x$$ This leads to x not equal to 2 or 4 Solution 3: MatLab simulation of series $$\sqrt{2}, \sqrt{2}^\sqrt{2}, [\s
Xu Cui
14 sec read