r**h
发帖数: 1288 | 1 不行吧
float类型，1位符号位，8位指数位，23位精度。
要精确的话，应该是要把这23位全取出来，然后做两个23位的大数乘法。就算用long
long可以不溢出，意义也不是很大
所以我觉得这个问题没什么意义，个人意见 |
|
|
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w********p
发帖数: 948 | 4 lz 的问题是 0.5 ＊ 1.5
0.5 可能会是 0。499999999999999999
但是我们计算的时候根本，不用考虑这些。
想想。笔算是怎么做乘法的。 15 ＊ 5 然后 e -2 好了。然后改咋调整，再调就
是了。 |
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r*********n
发帖数: 4553 | 5 我面试的时候就是说转化为int，然后loop，但是说完之后面官没有反应，然后我就凌
乱了....
另外，给一个float，怎么数小数点呢？
还有如果是转化为int来做，我觉得并不见得会快，比如
3.1415926 * 3.1415927
太多有效位了，这个loop应该非常慢吧 |
|
y****n
发帖数: 743 | 6 我可能会这样做，不知道有没有更好的方法。
循环累加建立9x9乘法表
转化成字符串，删除小数点
两重循环，位于位相乘，累加结果，处理进位
结果转换成字符串，回填小数点，再转换换成float |
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r******l
发帖数: 10760 | 7 a乘b的话当然不能loop b次累加a了，那得多慢啊？弄个数组存好九九表，然后模拟竖
式运算。 |
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l*h
发帖数: 4124 | 8 tell this to those thousands died from TB.
last year the Chinese government gave WHO a much smaller number, so WHO made
a summation that the worldwide infection total was 600 million. what a nice
slap! now the disease control of China acknowledge there are 550 million in
China alone. |
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k******e
发帖数: 8870 | 9 since u brought up this issue, it might be more professional for you to
provide some professional resource to prove yourself. a link to the WHO
summation will satisfy that. other while, u r just wasting ur time to post
those articles and discussion by just beating around the bush.
made
nice
in |
|
l*h
发帖数: 4124 | 10 tell this to those thousands died from TB.
last year the Chinese government gave WHO a much smaller number, so WHO made
a summation that the worldwide infection total was 600 million. what a nice
slap! now the disease control of China acknowledge there are 550 million in
China alone. |
|
k******e
发帖数: 8870 | 11 since u brought up this issue, it might be more professional for you to
provide some professional resource to prove yourself. a link to the WHO
summation will satisfy that. other while, u r just wasting ur time to post
those articles and discussion by just beating around the bush.
made
nice
in |
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w*****o
发帖数: 1806 | 12 Not exactly. When used online, the minimun amount will be calculated
summation. For example, you used 40 off 200 code, then you want to
use the free camera code(100 minimum), then if your total order is
above 300, you got it. No two dollar off code can be combined.
The free memory code will be good if your order is above
200 + the 30GB harddrive price. But it will not be worth.
Go B&M store, use instore coupon, you got the deal. Online is not
a good way for this.Good luck. |
|
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l*******r
发帖数: 3799 | 14 不是MHP啊，不过我说过之前都跌的比较羞怯。今天比较比较典型，
指数新低，VIX却没有，总的来说对妞妞还是比较好的。
看看summation index, 跟从前一样，当她开始上升就可以long啦。。 |
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s*******e
发帖数: 432 | 15 summation of all after convert to equivalent barrel of oil.
Basically, crude consumption is about half of US and coal consumption is
about 3 times of US |
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d*******e
发帖数: 617 | 16 "That's been his philosophy in the private sector," Obama said of his rival.
"That's been his philosophy as governor. That's been his philosophy as a
presidential candidate. You can make a lot of money and pay lower tax rates
than somebody who makes a lot less."
"You can ship jobs overseas and get tax breaks for it. You can invest in a
country, bankrupt it, lay off the workers, strip away their pensions and you
still make money. That's exactly the philosophy that we've seen in place
for the last... 阅读全帖 |
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s***d
发帖数: 15421 | 17 没学过 极限？无穷小量写成某种无限数列summation 然后夹逼定理！嗯
主要还是夹逼
★ 发自iPhone App: ChineseWeb 11
★ 发自iPhone App: ChineseWeb 11 |
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l**********r
发帖数: 1745 | 18 Ok, I made some research on the internet and find out that:
1. I should report the foreign income in line 7 on 1040, so line 7 would be
the total of (the summation of box 1 in W-2 for both of us + the foreign
income that converted to us dollars).
2. If the foreign income also was taxed in the foreign country my husband
worked for, I can file form 1116 to claim a foreign tax credit (or deduction
).
3. Use the exchange rate prevailing when you receive, pay, or accrue the
item. If there is more tha... 阅读全帖 |
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p***n
发帖数: 488 | 19 二进宫了，终于……接下来还要diy 485，继续求bless。东西都是从版上学来的
，petition letter完全照版上的一个大牛抄的，就是连续发了好多个图片文件的那个
，不记得id了，反正非常感谢！所以请不要找我要petition letter了，自己考古吧。
版上很少有人claim 媒体报道，我claim了，也通过了。其实真正的报道没几个，
转来转去就显得多了，而且标题不一样看起来像很多。主要就是列表，媒体的名字，介
绍（多少万读者），国家什么的，这样看起来就很打眼。有几个采访邀请的email，也
做了张表格，这样显得明确，别人是对你感兴趣。有两个视频的采访，其实是很小的拿
不出手的，但把截屏的大头放上，图说叫“关于我的某某采访”，到底是哪采访的没好
意思提。
感谢的话就不多说了，一穷二懒就不发包子了，整点实际的，发一下我的
response吧。大家准备140的时候也可以参考，避免被RFE。千万不要犯的愚蠢错误：1
）忘记付上offer letter 和研究计划；2）独立推荐人忘记强调他们的独立身分。如果
不是这两点的话，也许不会招来这个RFE。... 阅读全帖 |
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l******t
发帖数: 2243 | 20 big cong!
发信人: pidan (派大星), 信区: Immigration
标 题: DIY EB1A 140 approved after RFE (附RFE Response)
发信站: BBS 未名空间站 (Fri Apr 29 00:54:06 2011, 美东)
二进宫了，终于……接下来还要diy 485，继续求bless。东西都是从版上学来的
，petition letter完全照版上的一个大牛抄的，就是连续发了好多个图片文件的那个
，不记得id了，反正非常感谢！所以请不要找我要petition letter了，自己考古吧。
版上很少有人claim 媒体报道，我claim了，也通过了。其实真正的报道没几个，
转来转去就显得多了，而且标题不一样看起来像很多。主要就是列表，媒体的名字，介
绍（多少万读者），国家什么的，这样看起来就很打眼。有几个采访邀请的email，也
做了张表格，这样显得明确，别人是对你感兴趣。有两个视频的采访，其实是很小的拿
不出手的，但把截屏的大头放上，图说叫“关于我的某某采访”，到底是哪采访的没好
意思提。
... 阅读全帖 |
|
p***n
发帖数: 488 | 21 二进宫了，终于……接下来还要diy 485，继续求bless。东西都是从版上学来的
，petition letter完全照版上的一个大牛抄的，就是连续发了好多个图片文件的那个
，不记得id了，反正非常感谢！所以请不要找我要petition letter了，自己考古吧。
版上很少有人claim 媒体报道，我claim了，也通过了。其实真正的报道没几个，
转来转去就显得多了，而且标题不一样看起来像很多。主要就是列表，媒体的名字，介
绍（多少万读者），国家什么的，这样看起来就很打眼。有几个采访邀请的email，也
做了张表格，这样显得明确，别人是对你感兴趣。有两个视频的采访，其实是很小的拿
不出手的，但把截屏的大头放上，图说叫“关于我的某某采访”，到底是哪采访的没好
意思提。
感谢的话就不多说了，一穷二懒就不发包子了，整点实际的，发一下我的
response吧。大家准备140的时候也可以参考，避免被RFE。千万不要犯的愚蠢错误：1
）忘记付上offer letter 和研究计划；2）独立推荐人忘记强调他们的独立身分。如果
不是这两点的话，也许不会招来这个RFE。... 阅读全帖 |
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p*******l
发帖数: 2495 | 22 http://www.mitbbs.com/pc/pccon_3687_152251.html
绿卡申请信模板七: EB2 NIW I-140 petition letter sample
http://www.mitbbs.com/pc/pccon_3687_152251.html
作者：qiaka
发表时间：2011-01-12
更新时间：2011-01-12
浏览：1721次
评论：0篇
地址：128.206.
::: 栏目 :::
下面是一封申请EB2 NIW I-140的petition letter的范例。这是多年前公开发表在
MITBBS“落地生根”版上的一个帖子。现在重贴于此，供大家参考。
个人点评：EB2 NIW的申请是技术活，满足NIW的三个方面都必须论证到位，否则就通过
不了；而且论证过程中，有些关键词必须出现在移民官的视野里。这封petition
letter基本上达到了这几方面的要求。更难能可贵的是，这封petition letter的后面
，还列出了所有的exhibit，值得参考。
----------------------------------... 阅读全帖 |
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s*****y
发帖数: 80 | 23 由于本人的case比较弱，所以现在是EB1A 跟NIW 一起准备着。已经差不多写好了EB1A
的petition letter，开始准备NIW。看了几篇模板，发现有些疑问。
1. NIW 不需要列表格，油灯图等吗？为什么我看到的模板都没有这些，只有Exhibit？
2. EB1A的petition条理比较清楚，比方说我要claim三项，就从1，2，3几方面阐述。
但是NIW怎么感觉条理比较混乱呀？
请有经验的前辈指点迷津，小女子不胜感激！
同时附上我参考的NIW的petition：
U.S. Department of Homeland Security
Citizenship and Immigration Services
RE: EB-2 Petition for Permanent Residency with request for a National
Interest Waiver
Petitioner/Beneficiary: Dr. Xx Xx
Classification Sought: 203(b)(2) NIW
... 阅读全帖 |
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s*******e
发帖数: 432 | 24 You are trying to compare mathematical department's classes in US to
engineering math class in China. For example, the linear algebra you are
talking about is more about abstract linear algebra(you can refer to
Berkeley's math department requirement for mathematical undergrads). For
real analysis, inequality like miniski and holder are more related to
measure theory and Lp space which is taught at first year mathematical
graduate class.
Most math class for general undergrad are similar as those ... 阅读全帖 |
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f********t
发帖数: 6999 | 25 【 以下文字转载自 Military 讨论区 】
发信人: colon (航空报国), 信区: Military
标 题: 小鬼子核电站又喷核蒸汽了，美西的做好准备喽
发信站: BBS 未名空间站 (Wed Jan 1 21:16:31 2014, 美东)
从12月19号就开始了。
Steam over Fukushima as sign of catastrophe: 89 tons of deadly radioactive
fuel could reach US in 2 days
Unexplained plumes of radioactive steam have been rising from Fukushima's
Reactor Building 3. TEPCO has confirmed the reports, adding that they were
not clear on the details of the sudden change at the reactor because of "
lethal radiation levels in t... 阅读全帖 |
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e********8
发帖数: 929 | 26 東電は現在3号機がメルトダウンしていると静かに認めた
http://blog.livedoor.jp/home_make-toaru/archives/7480037.html
TEPCO Quietly Admits Reactor 3 Could Be Melting Down NOW
Turner Radio Network (TRN) has issued a report regarding Fukushima Diachi
Nuclear Plant that is expected to affect the entire Northern Hemisphere.
According to the report: “Persons residing on the west coast of North
America should IMMEDIATELY begin preparing for another possible onslaught of
dangerous atmospheric radiation from the Fukushima nuclear d... 阅读全帖 |
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S*********g
发帖数: 24893 | 27 Sodomy
From Wikipedia, the free encyclopedia
Sodomy (/ˈsɒdəmi/) is any non-penile/vaginal copulation-like
act, such as oral or anal sex, or sex between a person and an animal.[1] The
word is derived from the story of Sodom and Gomorrah in chapters 18 and 19
of the Book of Genesis in the Bible.[1] So-called "sodomy laws" in many
countries criminalized not only these behaviors, but other disfavored sexual
activities as well, but in the Western world, many of these laws have been
ove... 阅读全帖 |
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t******g
发帖数: 10390 | 28 前ravens的主教练分析说december momentum是个myth.
http://www.nfl.com/news/story/0ap2000000296566/printable/decemb
In summation, the past five Super Bowl champions have gone 2-1, 0-3, 2-1, 2-
1 and 1-2 in the last three weeks of the regular season for a cumulative
record of 7-8 down the stretch.
但是除了saints之外,没有那个球队最后两场都象pats这样输地这么有气无力的. |
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b*s
发帖数: 82482 | 30 把往事都加到一块，summation，如果是连续变量，就是求积分了……
题目为什么是求和...
求解,.. |
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b*s
发帖数: 82482 | 31 把往事都加到一块，summation，如果是连续变量，就是求积分了……
题目为什么是求和...
求解,.. |
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l*******g
发帖数: 4894 | 32 贴一个我之前跟max写信他的回信。这是他claim他的琴和普通的gibson不一样的5个要
素。
THE FIVE FACTORS WHICH CREATE THE ‘1959 BURST’ SOUND
Various factors all came together in 1959 to produce what I, and many others
, consider
to be the ultimate electric guitar, the 1959 Burst. I have spent 38 years
studying genuine
1950’s Bursts and reproducing their sound. I have found that there are five
main factors
responsible for creating the 1959 Burst sound.
THE WOOD
The Honduras mahogany used in the 1950’s to build guitars was cut from
tre... 阅读全帖 |
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e**n
发帖数: 5876 | 33 fuji的问题主要是哪个X-Trans的sensor. 解raw很不好解. 比如会产生著名的"water
color effect or smear effect"等. fuji版经常有人吐槽. 比如最近的这个长篇的:
I will apologize in advance for this post as I don't mean to be a contrarian
on a fan website but I feel obligated to voice one more opinion as that's
the purpose of the forum I guess.
From reading the thoroughness of some of the research here, it's evident to
me that many of the posters here are much more informed than I am from a
technical understanding (I do have an engineering deg... 阅读全帖 |
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G*****7
发帖数: 1759 | 34 your 码神 is not generic, which is the holly grail for both mathematicians
and devs.
the 码神 in my mind
would write a generic, lazy-evaluation based, expression template version of
sum, such that the sum of any arithmetic sequence would be evaluated using
the shortcut (first+last)*num_elem/2, while the sum over any other sequence
is performed through vectorized (and possibly OpenMP paralleled) element-by-
element summation.
this possibly involved overloaded comma operator and boost::counting
iterat... 阅读全帖 |
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x********u
发帖数: 15396 | 35 "In summation, a particular species of mosquito must bite a dog infected
with circulating L1 heartworm babies, must carry the babies to stage L3 and
then must bite your dog . The adult worms and babies will eventually die off
in the dog unless your dog is bitten again! Oh, and one more thing.
Heartworms Development Requires Sustained Day & Night Weather Above 57˚
F"
"The University of Pennsylvania vet school (in a study funded by Merial)
found: “Development in the mosquito is temperature d... 阅读全帖 |
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T*****n
发帖数: 2456 | 36 哪位辛苦一下翻译翻译介绍给国人？其实内容不是很多。很多copypaste就可以了。
http://www.angelfire.com/co/JeffersonBible/
Amazon上好像还挺热的，其中有一个介绍很不错，不过比较长，有兴趣读杰佛逊版圣经
的人可以参考一下：
Thomas Jefferson was no Christian. Like many of the most famous of the
founding fathers, he was a Deist, and counted himself a Unitarian, but he
often said he was the sole member of a sect including no one but himself. He
had confidence in his own reason and conscience. He did admire Jesus,
saying, "Among the sayings and discourses imputed to him by his biogra... 阅读全帖 |
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l***y
发帖数: 791 | 37 green month is my 粗线条, 笼统的 name for May. 不是惊天动地的意思. :)
，
you should teach a graduate class called 'the art of summation'
。
note to or: i've lurked there quite a few times but haven't find oppotunity to
post. |
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l**********t
发帖数: 5754 | 38 来自主题: TrustInJesus版 - 基板名人堂
summation of all positive and negative integers. |
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l**********t
发帖数: 5754 | 39 来自主题: TrustInJesus版 - 基板名人堂
的。
you are right. the summation is not defined. |
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G*******s
发帖数: 4956 | 40 首先给大家看个故事，然后再探讨经文：
林慈信牧师的《基督教教义发展史》中提到这个：
http://blog.sina.com.cn/s/blog_622134fd01013i7l.html
基督论的发展史(1)：基督论的争辩
HISTORY OF THE DOCTRINE OF CHRIST (1):
The Christological Controversies
(Louis Berkhof, A History of Christian Doctrines, pp. 101ff.)
基督论与三位一体之问题的关联
Connection of Christological and Trinitarian Problems
基督论的难题可以从一般神学（译注：神论）方面，与拯救论方面来加以
研究。早期教父对基督论拯救方面的关系，虽未曾加以轻忽，但他们在重要的讨论上却
没有重视。在三位一体争论的气氛中，他们从一般神学（译注：神论）方面来研究基督
，乃天经地义的事，而三位一体争论所导致的决定则是，基督为神的儿子，事与父同质
的，因此祂是神。从此而发生的问题，就是基督... 阅读全帖 |
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E*****m
发帖数: 25615 | 41 這篇基督徒寫的文章，基督徒朋友們可以看看。
http://www.relevantmagazine.com/god/church/why-aren%E2%80%99t-m
“God’s alright when he isn’t making bears eat children, you know?”
I didn’t. But this was just one of the arguments that would be lobbed at me
by my new atheist friend, Tyler.
Tyler used to believe in God. Though I didn’t know him at the time, his
theology degree and sleeve of artfully ambiguous Christian tattoos suggest
he took the whole thing pretty seriously, so when we began discussing his
recent de-convers... 阅读全帖 |
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Y**u
发帖数: 5466 | 42 I hope you can all hear me, can you? Is it quite audible? Right. This is the
last talk. During the last three times that we have met here we have been
talking about the chaos in the world, the misery, the suffering, and the
desire for entertainment and the avoidance of fear. We went into several
things concerning our daily life. During all these talks it must have been
very clear that we are concerned with the human transformation
psychologically, for that alone can bring about a change in the s... 阅读全帖 |
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S**I
发帖数: 15689 | 43 do a summation of used and free |
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p********0
发帖数: 186 | 44 Hi,
I have 5 integers, I want a function to unique map these 5 integers to 1
integer.
1, 2, 3, 4, 5
should have a different key
than 2, 3, 4, 5, 1
so simple summation would not work. |
|
c***g
发帖数: 472 | 45 when summing a sequence of float/double values, the order of the summation i
s insignificant.
right?
if not right, can you give me some examples? |
|
l********r
发帖数: 175 | 46 I wrote Fortran program to calculate the average and standard deviations of
a large number of data. It turned out that the instantaneous results are
always positive, then the last several sets of average values became
negative. I think it is because the total sum of those data reached the
limit of computer. So it began to show negative results.
I define the type of data as double precision. Is there anyone knows how to
solve the problem? Thanks a lot. |
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f*******y
发帖数: 988 | 47 scale一下 if 精度不是啥concern
of
to |
|
l***8
发帖数: 149 | 48 I bet it is not the fault of "double precision" data. The "double precision"
data are floating point. Their range is extremely wide (IEEE double can be
up to 1e307) and it is not possible to overflow from positive to negative (
you will only get a +NaN).
I think you're seeing negative numbers because the "count" is an integer and
FORTRAN calculates the average as (double)"sum" / (int)"count". If you have
more than 2 billion data entries (or 4 billion if the "count" is unsigned),
you'll see negat |
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T*******n
发帖数: 493 | 49 The "cases" environment is the correct method, but it
does force the equations into \textstyle, i.e., fractions some
out small and summation operator limits come out on the
side. To get regular size equations within cases, add a
\displaystyle declaration right after \begin{cases}. |
|
