a*******6
发帖数: 520 | 1 再次呵呵。。。这就是我说的古中国的一些（注意，是“一些”）文化实在是妨碍人们
对世界（比如说，数学，物理学，医药学）的探知
我写过现代“西方”论文数十篇，定义概念（也包括definitions, notations）无数，
但知道概念如果离开了特定的context和一定的体系是没任何意义的，就像这里你硬要
说什么是“科学”一样，比如如果你写篇文章叫“科学是什么”，那只能供人呵呵了 |
|
s*******e
发帖数: 1389 | 2 http://cliffmass.blogspot.com/2010/01/how-good-are-uw-students-
The overall grade was 58%
43% did not know the formula for the area of a circle
86% could not do a simple algebra problem (problem 4b)
75% could not do a simple scientific notation problem (1e)
52% could not deal with a negative exponent (2 to the -2)
43% could not do simple long division problem with no remainder!
47% did not know what a cosine was. |
|
z**********e
发帖数: 22064 | 3 http://cn.nytimes.com/china/20121205/c05crash/dual/
New York Times ChinaHow Crash Cover-Up Altered China’s Succession
By JONATHAN ANSFIELD December 05, 2012
一场改变中国政治格局的车祸
安思乔 2012年12月05日
BEIJING — “Thank you. I’m well. Don’t worry,” read the post on a
Chinese social networking site. The brief comment, published in June,
appeared to come from Ling Gu, the 23-year-old son of a high-powered aide to
China’s president, and it helped quash reports that he had been killed in
a Ferrari crash after a nig... 阅读全帖 |
|
x********i
发帖数: 905 | 4 Intel STS 2015 Finalists
Anandapadmanaban, Eswar
Dr. Ronald E. McNair Academic High School, Jersey City, NJ
The ThereNIM: A Touch-less Respiratory Monitor
Ashkin, Emily Lorin
Providence Day School, Charlotte, NC
A Novel Synergistic Approach for Enhancing Immunotherapy in the Treatment of
Melanoma
Chemparathy, Augustine George
Dougherty Valley High School, San Ramon, CA
Accumulation of the Biodiesel Precursor Triacylglycerol Offsets Oxidative
Stress in the Model Alga Chlamydomonas reinhardtii
Cui... 阅读全帖 |
|
t********t
发帖数: 1070 | 5 昨天贴了个关于张汤姆证明的帖子，引来几个装逼傻叉的质疑，怀疑老子装逼看不懂，
所以现在我觉得有必要科普一下张汤姆的证明原理。这里强调是原理，不是详细过程，
但这并非是因为我没看懂过程，而是因为张汤姆的文章有56页，要解释清楚每个证明大
概需要两倍的56页。而且，这是个需要大量函数和公式的证明，没有公式将极其难以说
清楚，而本版帖子是没法打公式的。所以，你要是看懂了没有公式的本贴，就知道叔是
如何的牛逼且又是如何的低调，而且也会发现你是多么的牛逼，能看懂张汤姆的素数对
是咋回事。
本贴分两部分，第一部分是给我一样的数论钓丝门外汉看的，第二部分是张汤姆文章导
读。重点是第一部分，如果你看懂了第一部分，那么看第二部分应该象上厕所一样的容
易。而如果你看懂了第二部分，自然会去读张汤姆的原文，那时也就没我什么事了。
不过还是有几个前提条件，一，你得去下载一份张的文章，可以与第二部分对照，原文
网上到处都是。二，如果你想看第二部分或原文，则至少应该对原文page 3 notation
中的概念有所了解，不然会造成写本贴和看本贴的人互骂一声傻逼的严重后果。也就是
你必须对如下概念有所了解，admis... 阅读全帖 |
|
h******1
发帖数: 16295 | 6 【 以下文字转载自 Mathematics 讨论区 】
发信人: hsh (三胡), 信区: Mathematics
标 题: 电工科普：张汤姆素数对证明原理 (转载)
发信站: BBS 未名空间站 (Mon Feb 2 12:23:30 2015, 美东)
发信人: threeheart (氷), 信区: Military
标 题: 电工科普：张汤姆素数对证明原理
发信站: BBS 未名空间站 (Sun Feb 1 23:37:08 2015, 美东)
昨天贴了个关于张汤姆证明的帖子，引来几个装逼傻叉的质疑，怀疑老子装逼看不懂，
所以现在我觉得有必要科普一下张汤姆的证明原理。这里强调是原理，不是详细过程，
但这并非是因为我没看懂过程，而是因为张汤姆的文章有56页，要解释清楚每个证明大
概需要两倍的56页。而且，这是个需要大量函数和公式的证明，没有公式将极其难以说
清楚，而本版帖子是没法打公式的。所以，你要是看懂了没有公式的本贴，就知道叔是
如何的牛逼且又是如何的低调，而且也会发现你是多么的牛逼，能看懂张汤姆的素数对
是咋回事。
本贴分两部分，第一部分是给我一样的数论钓丝门外汉... 阅读全帖 |
|
o**********e
发帖数: 18403 | 7 这堆公司的烙印化是主要靠外包印度，
后门源源不断地爬进来三姑六婆。 这些媒体还曝光少。
H1B的烙印垄断也要闹，但是另外一个闹法。
老美已经开始了。 媒体在曝光 INFOSYS， TATA CS还有
很多小公司。
烙印骗子这样的。 一个骗子运100个H1B。
然后骗子“从良”继续行骗。
A notation in the federal court docket says Majety, "despite performing well
in interviews," has had difficulty finding employment whenever background
investigations reveal his indictment and guilty plea. But this month,
according to the court file, he was offered a $95,000-a-year job with a
company in Pennsylvania as a senior Java developer.
http://ar... 阅读全帖 |
|
f**********d
发帖数: 4960 | 8 我觉得这样挺好的。
国内学生学习时常常会按门割裂来学，因为notation也不连贯。
这样放在一本书里其实大有好处。 |
|
t******l
发帖数: 10908 | 9 属实。。。。。像俺这种马工不懂就直说，反正没被妈妈桑 bootcamp 过确实连
notation 黑话都听不懂。
: 感觉学数学和物理的忽悠偏多。
: ：上面一帮狗仗人势的，看弃婴装逼气场足欺负我一不是数学出身的人。麻痹的
偷换概
: 念，把我的H |
|
|
s*****V
发帖数: 21731 | 11 Scholze:Thanks for the wonderful post! I agree with everything that was said
.One small thing I would like to add is that most accounts indicate that no
experts have been able to point to a place where the proof would fail. This
is in fact not the case; since shortly after the papers were out I am
pointing out that I am entirely unable to follow the logic after Figure 3.8
in the proof of Corollary 3.12 of Inter-universal Teichmüller theory part
III: “If one interprets the above discussion in ter... 阅读全帖 |
|
a*******d
发帖数: 3041 | 12 已经去世了
Obituary for Dr. Yu Ping Liu
Yu Ping Liu, longtime resident of Rolling Hills, passed away on February 18,
2018 at the age of 72. He shared 47 years of marriage with his loving wife
Chiling. He is also survived by his brother Yu Nan Liu (wife, Mary Liu), his
sister Yin-An Liu Tsai (husband, James Tsai), his daughter, Alice Liu
Jensen (husband, Christopher Jensen), his son Bryan Liu (wife, Kristy Liu),
and three grandsons, Garrett Liu Jensen, and Brandon and Lucas Liu.
Yu Ping was born on Ma... 阅读全帖 |
|
X1
发帖数: 1823 | 13 A timeline of murder
One statement of facts obtained by the news agency detailed a timeline of
the murders:
Navaratnam was killed on or about Sept. 6, 2010. During the investigation,
detectives found a piece of leather lacing in McArthur’s van that contained
Navaratnam’s DNA. His bracelet was found in McArthur’s bedroom.
Faizi, 42, was killed on or about Dec. 29, 2010, after disappearing from Gay
Village. His abandoned vehicle was found near a home to which McArthur had
access at the time of the... 阅读全帖 |
|
D**S
发帖数: 24887 | 14 I am so out!
So, the "RuPaul" notation is purely a coincidence, or indeed meant to be a
mockery of RonPaul"? |
|
l****z
发帖数: 29846 | 15 April 27, 2012 Posted by Warner Todd Huston
As far as race-baiter Roland Martin of CNN is concerned, America is guilty
until proven innocent. Guilty of racism as some sort of original sin, one
that can never be washed away by either deeds or absolution.
On April 26, Martin got his inner Je$$e Jack$on on and tweeted: “I simply
accept the reality that racism is in the DNA of America. And when that
button is pushed, the true feelings come tumbling out!”
Mark down Mr. Martin as another one of those... 阅读全帖 |
|
l****z
发帖数: 29846 | 16 June 14, 2012 by Warner Todd Huston
A month ago the President had his tech lackeys add a little something to a
host of past president’s biographical webpages on the official White House
website causing eyebrows to be raised across the country. At that time team
Obama thought would be a great idea to add sections at the end of many
presidential bios touting how great Obama is, too. In an admission that they
overstepped propriety and now that the outrage has died down, the White
House web team h... 阅读全帖 |
|
l****z
发帖数: 29846 | 17 Delegates to the Democratic National Convention in Charlotte today booed,
jeered and shook their fists when the chairman, Los Angeles Mayor Antonio
Villaraigosa, declared that an amendment to the party’s platform that
restored a mention of God had been adopted.
It took him calling for the vote three times before he could make the
declaration that in his opinion, the ayes made up two-thirds of the vote.
After the first vote, which sounded like a dead heat between the yes and no
votes, he said, “I... 阅读全帖 |
|
w*******g
发帖数: 9932 | 18 When we talk about who should we vote for, we often have to seek any benefit
other than our own to justify the choice.
This is as if an adopted child were deciding on which parent to love more
based on who beats him less.
Does Romney or Obama advocate the rights of Chinese Americans? No.
Does Romney or Obama promotes better relations with China? No.
Does Romney or Obama favor the advancement of Asian minorities in general?
No.
So we are resorting to vague economic benefits from either choice. Ho... 阅读全帖 |
|
l****z
发帖数: 29846 | 19 Mexican Police Chief Killed With Rifle From Obama and Holder’s Fast and
Furious Gun-Running Scheme »
by Jammie
Move along, nothing to see here. There have only been a couple hundred
people killed, so what’s the big deal?
A high-powered rifle lost in the ATF’s Fast and Furious controversy was
used to kill a Mexican police chief in the state of Jalisco earlier this
year, according to internal Department of Justice records, suggesting that
weapons from the failed gun-tracking operation hav... 阅读全帖 |
|
|
l***h
发帖数: 1 | 21 The traffic stop and its aftermath
You get pulled over anyway. Now what do you do?
Be polite. “Most of the time, the motorist has very little chance. The
officer has already has made up his mind,” says Wolfberg, the former cop.
“The only real chance the driver has is to be nice.” Act peeved and a
trooper may give you the full fine. Some will also flag the citation with a
notation, like “ND” -- a note to a prosecutor or to himself (in some states,
law-enforcement officers act as prosecutors in tr |
|
d*****9
发帖数: 498 | 22 填完title transfer表后，买家要自己去tax office转title
怎么才知道他确实转了？自己是不是要填个notation of sale
然后连自己原来的车牌子一起交到tax office去？ |
|
P***0
发帖数: 368 | 23 I received a violation notice (parking or toll-road) for a vehicle I
sold. What do I do?
It is very important that you notify us of the sale of your former vehicle
so we can update the vehicle record. Complete a Texas Motor Vehicle Transfer
Notification and mail it to the address on the form. When received, we will
place a notation on the vehicle record indicating the vehicle was
transferred and the date the transfer occurred. Our record will continue to
show the seller's name until the new ... 阅读全帖 |
|
s******n
发帖数: 45 | 24 notation上之说不交late fee什么的，还有可能吊销驾照，真的至于入境被抓么？ |
|
s******n
发帖数: 45 | 25 是真的，就是特别不明白为啥这么晚才给issue,要是早点早就注意了，你也是很晚收到
notation这种情况么？非常感谢你的信息，难道你的驾照没有受影响么？DMV真的会过
段时间就没记录了么？ |
|
b**o
发帖数: 5769 | 26 【 以下文字转载自 Oklahoma 讨论区 】
发信人: bibo (清粥小菜), 信区: Oklahoma
标 题: Pray for Moore! 请大家尽力帮助这次龙卷风受害地区！
发信站: BBS 未名空间站 (Tue May 21 10:22:58 2013, 美东)
好惨呀！Moore那边好大一区都被夷为平地了！
下面是一些可以帮助他们的方法，请大家帮忙！捐$10也是献爱心！
http://kfor.com/2013/05/20/how-to-help-okla-tornado-victims/
Here are a few ways to help the tornado victims:
- The Salvation Army will have a truck at KFOR-TV taking donations starting
10 a.m. Tuesday.
444 E. Britton Rd.
Oklahoma City, OK 73114
NO CLOTHES PLEASE
Donate: Text “storm” to 80888 to make ... 阅读全帖 |
|
c******a
发帖数: 11393 | 27 就是日本邮政的EXPRESS MAIL吧
卖家的COMMENTS:
"Time for delivery is the United States and is 4 - 8 days. It ships by
airmail. It is a model of Japan. The notation is also Japanese. A guarantee
is effective in Japan."
买家的FB:
"Incredibly fast shipping. Amazon estimated 3 weeks and I got it in about 4-
5 days. From Japan to the USA even! Excellent service and hand written thank
you came In the box" |
|
m********t
发帖数: 9426 | 28 I did mean 0<=x<=5 and 0<=y <=5 using this notation
but the student didn't think so.
You are on my side then?
x<=5 |
|
j****e
发帖数: 58 | 29 Thank you for your comfort.
No. this is very important to me. I will have to answer the question in the
future about if you have been subject to any Disciplinary Action.
And I won't lie to it. So I will be honest to say yet. That will impact my
all future.
This notation in my transcript, which indicates that I have been subject to
Disciplinary Action because of academic integrity, will be always be here
permanently in my whole life, that is how it matters. |
|
j****e
发帖数: 58 | 30 Thanks again for your advice!
Do you think it is Ok to say that school fail to publish the consequence of
plagiarism and lacking transparent procedures?
I never knew they will put permanent notation on my transcript from any of
the information they published online. And the procedure which the
administive board member is not open to me. I was not allowed to present for
myself during their meeting. (I was only allowed to submit a two-page
statment) And I was not allowed to appeal this decision af... 阅读全帖 |
|
Y********x
发帖数: 322 | 31 ' is just a notation which does not have any math significance. it is used t
o distinugush x and x'. So how to pronouce it? comma? |
|
c******w
发帖数: 1054 | 32 连什么是scientific notation都不懂，计算就更别谈了，转换个长度单位不知道是该
乘还是除，给了公式和数字，计算器都不知道怎么按，数字不写单位，说不知道怎么写
。给了个稍微难点的计算题做为bonus question说我又不是数学专业我怎么知道怎么算
，其实都是课堂上手把手讲过的。
无语了简直。就这智商和科学素质还谈何research？ |
|
d*****e
发帖数: 433 | 33 作者都是国内某知名高校（前10），paper看的人一肚子的火。理论部分就是该领域基
础课教材第一章的内容，仿真结果和理论分析几乎没什么关系，连个参数都不给。。。
notation还是乱码。。。更可气的是，抄书都抄不对！一个优化方程，你不根据系统误
差去算，直接来了一个J=k*y^2 (J：cost function, y: 系统输出值，k：常数)。。。
那你输出是零就行了，还搞什么搞？
郁闷的是怎么想的？国际形象怎么办？reviewer 不可能都是同胞啊。。。。
把review发给我的editor也是个同胞，估计是觉得这个paper没法给别人看啊。。。 |
|
L*******t
发帖数: 2385 | 34 第一篇paper，本来对他期望很大，结果问题都是我自己解决的，他改了一些notation
，对文章的structure发表了一些看法，我也照着改了。算是contribution吧。
后面两篇都是我一个人写完的，带上自己的导师不用说了，但是我naive的是，过早地
署了这个coauthor的名字。觉得拿掉也不太好。。。 |
|
n***p
发帖数: 7668 | 35 后两篇文章直接把他的名字拿掉呗。
notation |
|
p**********n
发帖数: 1470 | 36 这个文章也太傻叉了。论效率，当然绝大部分情况word强了，但是word碰到复杂情况例
如复杂公式、notation、图表等等就挂了，如果写书也挂了。word只能用于写文科的、
结构不复杂的文档。超过这个根本不行，bug太多了，根本不scalable.
理科(math,cs,physics)的paper、绝大部分学科的教科书只能用latex. |
|
A****Z
发帖数: 694 | 37 LaTeX的毛病是boiler plate code太多，语法也啰嗦。多一个少一个括号就编译不过。
LaTeX的几个优势是交叉引用，公式，ligature。这几个功能完全可以更简洁的标记语
言写出来，不知道有没有用LaTeX后端直接编译Markdown的平台。
：这个文章也太傻叉了。论效率，当然绝大部分情况word强了，但是word碰到复杂情况
例如复杂公式、notation、图表等等就挂了，如果写书也挂了。word只能用于写文科的
、结构不复杂的文档。超过这个根本不行，bug太多了，根本不scalable.
：理科(math,cs,physics)的paper、绝大部分学科的教科书只能用latex. |
|
c**i
发帖数: 6973 | 38 About--and continuing from--the previous posting attached below).
Correction:
(a) "(2) Then there are essential amino acids." The "amino" should be "fatty
."
(b) Bacteria do not make an essential fatty acid. Fungus does.
Note:
(a) The carbons in the chain (as opposed to occasional branches) of fatty
acids are counted in the same manner as those of amino acids: alpha, beta,
gamma and so on. But fatty acids can be long-chain, more than 20 carbons. To
refer to the other end (opposite from the alpha... 阅读全帖 |
|
o******u
发帖数: 12 | 39 Hey all,
There is one huge master bedroom with two walk-in closets in a 2bed
apartment@ashely building in riverhouse available from now. Floorplan is http://www.riverhouseapts.com/floorplansAshley.html with notation C1. You can also know more about this apt from this website.
The address is 1600 S. Joyce St., Arlington, VA. Riverhouse is pretty a good
place for gwu students or people working in DC downtown/northern VA: five
mins by walk to Pentagon city metro on blue line, pentagon city fashion |
|
o******u
发帖数: 12 | 40 Hey all,
There is one huge master bedroom with two walk-in closets in a 2bed
apartment@ashely building in riverhouse available from now. Floorplan is http://www.riverhouseapts.com/floorplansAshley.html with notation C1. You can also know more about this apt from this website.
The address is 1600 S. Joyce St., Arlington, VA. Riverhouse is pretty a good
place for gwu students or people working in DC downtown/northern VA: five
mins by walk to Pentagon city metro on blue line, pentagon city fashion |
|
g*******y
发帖数: 1930 | 41 The three-queue algo. can achieve O(k), where k stands for k-th qualified
number.
but I'm kinda confused by your notation of 'n', 'k'. The problem is to find
kth qualified number --> does this k have same meaning as yours?
. |
|
b****j
发帖数: 78 | 42 I explained before:
in your notation, f(a, b) means the number of permutations of a numbers with
the longest increasing subsequence length being b.
4 1 2 3 is one of the sequence for f(4, 3), but when looking from left, only
4 can be seen. |
|
m*****f
发帖数: 1243 | 43 你说得对, notation写错了, f(a,b)应该是a个元素从左边看有b个的数目, 不是简单的LIS, 但是好像想法还是正确的.
前面小尾羊的评论没错, 我没注意到
with
only |
|
t**g
发帖数: 1164 | 44 一个unbalanced binary tree
每个节点记录一个整数
对每个节点值
左边的child小于当前节点
右边的child大于当前节点
所以你插入1,2,3,4,5...n,会得到一个depth=n的树
可是插入6,4,8,3,5,7,9，就会得到一个well balanced tree
问题：
What is the average asymptotic depth of a simple unbalanced search tree of
integers? Use O(n) notation and provide proof |
|
j******t
发帖数: 788 | 45 感谢所有祝福的朋友，今天早8点接到电话。刚刚完了电话面试一个老印口音一个美国口音
问题是
1，我过去的项目. 问的非常具体，那个美国人也很懂行，真是觉得这些人知识面的确非常丰富。这个聊了好久，那个美国人非常不错
2，为什么想来BB
3, overload method 在C编辑器里能不能实现。这道题我回答错了。我的经验都是C++编辑器，所以一直觉得是可以的，但是在C里面其实是不允许的
4， 对STRING里面的WORD按出现的频率进行排序。
5， 关于BIG_O NOTATION的问题
到现在还没有收到下一步面试的通知。班上人都说BB做决定很快，如果是这样，是不是说我这这次没戏了。 |
|
d*******i
发帖数: 117 | 46 "
Suppose we are given a rooted tree T with n leaves and m non-leaf nodes.
Each leaf is colored with one of k < n given colors, so several leaves can
have the same color. We need to color each interior node of T with one of
the k given colors to maximize the number of edges whose (two) endpoints
are colored the same color.
We can solve this with a DP algorithm that runs in O(mk) time. Let V (v,
i) denote the optimal solution value when the problem is applied to the
subtree rooted at node v, and ... 阅读全帖 |
|
s*******8
发帖数: 12734 | 47 Verbal expressions, mathematical notations, and computer programming
expressions using a power operator or function include:
2 to the power of n
2 power n
power(2, n)
2n
2 ^ n
2 ** n
不知道你怎么看的，楼主问的是n的平方，这里是2的n次。
哈哈。 |
|
z*s
发帖数: 209 | 48 这学期终于结束，今天回家。分享一下上个月的Google校园面试题。一共两个面试官，
每人问45分钟。
一、
1、1~1000的数中有一个重复的数，把这个数找出来。
2、找出Binary Search Tree树的Median number。
这两道题的要求都是提出尽量多的算法，并给出复杂度。
3、第2题我说了一个O(log n)的算法，他就让我比较几个时间复杂度：O(n)、O(n^2)、
O(log n)、O(n log n)，问哪个是最快的。是不是任何时候O(log n)都比O(n)的算法好
？他想要的答案大概是："Big O notation discards multiplicative constants on
the running time, and ignores efficiency for low input sizes, it does not
always reveal the fastest algorithm in practice or for practically-sized
data sets." http://en.wikipedia.org/wik... 阅读全帖 |
|
n****t
发帖数: 241 | 49 第二题怎么做？
这学期终于结束，今天回家。分享一下上个月的Google校园面试题。一共两个面试官，
每人问45分钟。
一、
1、1~1000的数中有一个重复的数，把这个数找出来。
2、找出Binary Search Tree树的Median number。
这两道题的要求都是提出尽量多的算法，并给出复杂度。
3、第2题我说了一个O(log n)的算法，他就让我比较几个时间复杂度：O(n)、O(n^2)、
O(log n)、O(n log n)，问哪个是最快的。是不是任何时候O(log n)都比O(n)的算法好
？他想要的答案大概是："Big O notation discards multiplicative constants on
the running time, and ignores efficiency for low input sizes, it does not
always reveal the fastest algorithm in practice or for practically-sized
data sets." http://en.wikipedi... 阅读全帖 |
|
|
