a*****g
发帖数: 1320 | 1 1.How many of the letters in MATHCOUNTS have a horizontal line of symmetry?
2.Billy takes two marbles, without replacement, from a bag that contains
only six yellow marbles and three blue marbles. What is the probability that
he gets one marble of each color? Express your answer as a common fraction. |
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k***y
发帖数: 28 | 2 The following are just my guess:
1. Letter H,C,O has horizon symmetry
2. 4/9 |
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a*****g
发帖数: 1320 | 3 1.How many of the letters in MATHCOUNTS have a horizontal line of symmetry?
2.Billy takes two marbles, without replacement, from a bag that contains
only six yellow marbles and three blue marbles. What is the probability that
he gets one marble of each color? Express your answer as a common fraction. |
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s****r
发帖数: 5546 | 4 去年Economist写莫卧儿王朝的创始蒙古人Babur，这位16世纪的仁兄身居高位
还对印度人的本性描绘得入木三分，到21世纪的今天还一模一样：
Babur stayed in Delhi to consolidate his power, but he hated India. His
list of complaints offers a good indication of the things that mattered
to a 16th-century emperor:
Hindustan is a country of few charms. There are no good-looking people,
there is no social intercourse, no receiving or paying of visits, no
genius or manners. In its handicrafts there is no form or symmetry,
method or quality. There are no good horses, n... 阅读全帖 |
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w***s
发帖数: 7132 | 5 1947年4月黄昆给我的一封信*
杨振宁
黄昆和我在西南联大研究院是同班同学。我们于1944年得到物理学硕士学位。一年以后
，我们先后出国，去修读博士学位。他去了英国，我去了美国。出国以后我们不常通信
，可是每次提笔写信却总是写得很长。1947年2月或3月我给他写了一封长信。那时我正
在Allison的实验室工作，不很顺利，所以信上一定用了disillusionment一字。可惜这
封信我没有留下副本，而他也没有把原信保留下来。但是他的回信却在我的来往信件档
案之中。现在我把他给我的这封信打好复印在下面。
这封信很有意思。它描述了他（和我）作研究生时候的一些企求与失望的心态。也描述
了他对导师Mott的评价。关于Bernard Shaw的一段话也非常有意思。相信物理系的研究
生会从这封信中得到一些鼓励与启发。
附件二
黃昆1947年4月1日给杨振宁的信*
振寧：
......我對你所形容的感覺和disillusionment卻完全不覺得隔膜。你的煩惱不正是我
的
煩惱，因為我們「處境」不同，可是我知道如果我在你地位，感想大概差不多，幾乎無
疑的，disillusion 要更深一點。凡是... 阅读全帖 |
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b********n
发帖数: 5997 | 6 潍坊有大学吗？只有个潍坊学院吧。
[在 EPuppy (Symmetry is beautiful) 的大作中提到：]
：要搬到休斯顿，但买房好头痛。
：
：........... |
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s*******l
发帖数: 8210 | 7 那就应当是他嫂子了，叫Patricia， 他那小弟， joseph，5'11"， freshman guard
at Division III Hamilton College in Clinton, N.Y.， 现在还是个小孩一个。
Jeremy Lin's arrangement with his brother had provided a certain symmetry,
though. The two had always been close: Josh, 26, the eldest of the three Lin
children, was the person Jeremy measured himself against, trailing him as a
kid in Palo Alto like a lost puppy. (Joseph, the youngest Lin, is now a 5'
11" freshman guard at Division III Hamilton College in Clinton, N.Y.) When
Josh... 阅读全帖 |
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i*********r
发帖数: 5101 | 8 And when paired together, the Rockets' two point guards quite simply laid
waste to the Cavs' defenses. The Rockets were +20 during the 22 minutes when
Lin and Beverley shared the floor - the highest mark of any two-man pairing
Houston used Saturday night.
“I like those two,” McHale said. “I thought earlier in the year they were
our best combination on the floor. Those two guys together, they have a
nice symmetry between them. They both enjoy playing with each other. They
like each other. They're... 阅读全帖 |
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w***w
发帖数: 6301 | 9 Rockets coach Kevin McHale is eager to continue playing Jeremy Lin and
Patrick Beverley together in the backcourt.
"I thought earlier in the year, they were our best combination on the floor,
" McHale said. "Those two have a nice symmetry between them ... I like that
combination. With injuries, we haven't been able to [pair them] as much as
we have wanted to." Lin and Beverley have shared the court for just over 300
minutes this season, during which time the Rockets are shooting 46.2
percent fro... 阅读全帖 |
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s******r
发帖数: 21961 | 10 看看人家这种吐槽贴。
黑的蜜的都有理有据，引经据典，要数据有数据，要片片有片片，上下一百年，横跨
各行业。
我也不指望现在的黑蜜都是这个水平。
但至少小学僧水平的相互取攻击就不要来了。 |
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v*******n
发帖数: 8995 | 12 就这水平你就湿了？
当然，处于你的角度，大概可以理解。
别劲贴别人的，你丫自己拉偏架至于，到是自己搞一个啊。 |
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M******k
发帖数: 27573 | 14 这太言重了，看到版霸兄弟遍天下我来表示下景仰而已． |
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s******r
发帖数: 21961 | 15 哪里，逼格不露和我不熟。
我只是借用他的文章一下。 |
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p***r
发帖数: 20570 | 16 Let me make it clear, the whole bidding sequence doesn't make much sense.
After 2C, suppose 2C p 2D 2H 2S p 3C is nonforcing. 3H can be the only gf
bid.
So 3NT is to play, not serious or nonserious slam try, because if 3H shows a
gf spade raise, then you bid 3NT to show some serious slam interest,
partner bids 4S to sign off, there is no way for you to bid 4NT, because you
should just bid 4NT right away in that case.
Now after a natural 3NT, 4S shows mild slam interest in S. 4NT is RKC, 5D
shows... 阅读全帖 |
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C******n
发帖数: 358 | 19 Colts to pick Andrew Luck, sources say
EmailPrintComments
5000+
By Chris Mortensen
ESPN
Archive
2012 NFL draft order
The Colts will pick No. 1 overall in the 2012 draft. The 20 non-playoff
teams know where they'll pick, aside from coin flips that will break ties
for the Nos. 8 and 11 picks. Draft Order
With the stunning dismissal of Bill Polian, the architect of the Colts' 11
playoff appearances, uncertainties remain over Peyton Manning's health and
Jim Caldwell's future as coach, but sources sa... 阅读全帖 |
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i*********r
发帖数: 5101 | 21 hahaha, that would be so cool |
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B*****e
发帖数: 9375 | 28 Nice try. No.
The reason is much more solid and universal than symmetry. |
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M******k
发帖数: 27573 | 35 这么长这么多图的文章都没人顶，我来．
点赞，叫好，下周请继续． |
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B*****e
发帖数: 9375 | 36
我知道我没有资格享受你给教授那"我看不懂" "我还是看不懂"的娇嗔
但还是谢谢裙柱捧场
真心的 |
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a*****g
发帖数: 19398 | 37 英国教授发文章介绍《棋魂》和围棋数学
Symmetry Plus, a magazine for young mathematicians in the UK, published an
article about Hikaru no Go and math01 in its latest issue. Calin Galeriu, a
professor at Becker College, writes that go is a “board game with an
incredible amount of mathematical content.” Young people reading Hikaru
learn about area, the coordinate plane, deductive and inductive reasoning,
and more. The problem solving techniques Hikaru and his friends use for go
problems are similar to those used when... 阅读全帖 |
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a*****g
发帖数: 19398 | 38 本质还是 spatial thinking
围棋里面最富裕的元素
tap
children |
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ET
发帖数: 10701 | 39 really?
as i know, distance is measured by a figure of merit called MOI among the
differnt golf head design, given all 460cc.
Nike makes the higest moi driver, sas-sqash and later on SUMO, which all
come with the square head (sumo has the normal head version tho.)
it's easy to understand the square head driver is more forgiving since its
symmetry design. but distance?
btw, i do see Antony Kim overpassed Seigo Garcia. it's sumo vs. tour burner. |
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k******u
发帖数: 3137 | 40 我喜欢"Third-Year Turnaround" 这条, 呵呵.
When Alabama celebrated its national title victory against Texas last
January, maybe it was a positive sign for Notre Dame that its football
fortunes are on the threshold of better days. The two traditional powers
have seen their histories woven with remarkable symmetry over the past 85
years. Here are some examples:
1920s: Rise To Power
Notre Dame: Under Knute Rockne, wins its first national title in 1924.
Alabama: Under Wallace Wade, wins consecutive national |
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z*******y
发帖数: 126 | 41 2个月前还一个动作都做不了。 看过搭档爬和录像后，歇了2个月就能顶绳爬了。
it's all about symmetry, about physics and maths,太销魂了：） |
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a*****s
发帖数: 838 | 42 Please elaborate on the part about "symmetry, phsycics and maths"....
I want to 5.12, too... |
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h*******a
发帖数: 1753 | 43 羽毛球不是"球",badminton means birdie.拍子是个网子.不能摩擦birdie产生各种旋
转.速度和落点包括了badminton的一切.是典型的What you see is what you get的运
动.
乒乓球的伟大在于旋转.观众看不到.运动员也不一定就能通过盯球上的商标就能正确阅
读旋转.完全不是What you see is what you get. 由于旋转,完全描述球的状态要增加
两个角量吧(symmetry taken into consideration already). |
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l**2
发帖数: 726 | 44
I sanded it off for a better fit of my forehand play.
I know, I know, symmetry is broken, but not spontaneously. |
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g*2
发帖数: 658 | 45 Overview of running injuries of the lower extremity
Author
Lisa R Callahan, MD Section Editor
Karl B Fields, MD Deputy Editor
Jonathan Grayzel, MD, FAAEM
All topics are updated as new evidence becomes available and our peer review
process is complete.
Literature review current through: Feb 2012. | This topic last updated: Oct
20, 2011.
INTRODUCTION — Running is one of the world’s most popular forms of
exercise, with millions of regular participants. In the United States alone,
up to 40 mil... 阅读全帖 |
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r********5
发帖数: 46 | 46 According to the beauty of symmetry, Japan won't advance to the next
stage, since Korea lost to Uruguay. |
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e*******e
发帖数: 9616 | 47 就象对着一面镜子在划水，你不可能伸出超过镜子的距离去划水，因为镜子会挡住你的
手。surfing board 的比喻也不错
两手和身体的协同（tempo/symmetry） |
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c********t
发帖数: 1649 | 48 He means you buy 2 pairs at your each eye's degree. Detach them, switch
one side and rebuild them again.Then you will have 2 pairs that fit your eye
's perfectly. The glasses are in up and down symmetry so the new pairs are
exactly the same, you need to mark which side is left though. It is
pretty simply to do, you wont mess it up. |
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c********t
发帖数: 1649 | 49 He means you buy 2 pairs at your each eye's degree. Detach them, switch
one side and rebuild them again.Then you will have 2 pairs that fit your eye
's perfectly. The glasses are in up and down symmetry so the new pairs are
exactly the same, you need to mark which side is left though. It is
pretty simply to do, you wont mess it up. |
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