h********a
发帖数: 1120 | 1 http://www.returnofkings.com/53410/the-decimation-of-western-wo
A new song by rising Swedish pop star Tove Lo serves as a reminder to
Western men how broken the current generation of women have become. Have a
watch at this video:
The song has a simple message: a young woman gets hurt by a guy and decides
to ease the pain by going to the club, getting drunk, smoking reefer, and
fucking random guys. This coping strategy doesn’t work too well in the
video—a brief but visceral moment in the end show... 阅读全帖 |
|
g*****w
发帖数: 1 | 2 跨州算tax的时候要算一个portion
税表上说要carry to three decimal places
比如80640/89640= 0.899598394
这样carry to three decimal 应该填
0.899 （直接截取3位）
还是0.900 (四舍五入到3位）呢？
thx （最后算出来的税会相差一点点） |
|
h*********r
发帖数: 650 | 3 The Yosemite Decimal System
http://www.climber.org/
The Yosemite Decimal System is a set of numeric ratings describing the
difficulty of climbs. It is not the only rating system used by climbers, but
it is the one preferred by most of the people who use Climber.Org. According
to two contributors, the european rating system is less useful because it is
too subjective and the alaskan rating system is more useful because it is less
subjective.
Scroll down, or click here to view:
the basic YDS: Clas |
|
L*D
发帖数: 3966 | 4 ": 税表上说要carry to three decimal places |
|
WB
发帖数: 170 | 5 想要指定小数点位数跟千分号，
float/double的每次都要自己格式化。
能否简单点，定义好了就一直是这种小数精度。
还有显示输出千分号，是否只能努Decimal
才行？ |
|
G***G
发帖数: 16778 | 6 in a sql server database, which format do you like for a number,
float or decimal?
how to convert the number to scientific number and show it in webpage? |
|
|
q**i
发帖数: 174 | 8 NYSE just switched to decimal trading system (all
stocks are listed in cents vs. fractions (1/32, 1/64 or 1/128th
for example).
Some dealers and investors plan on filing a lawsuit
against it on the basis that it hurts investors.
Why? or Why not? |
|
y***g
发帖数: 3 | 9 SEC forced the change because they believe decimal trading
will provide a opptunity for lower spread, which is in favor
of investor.
Some dealer and institutional investor complain that it is
very difficult to execute big block limit order now, because
small investor will jump ahead and pick up the order flow with
only 1 cent better pricing.
I like the change because I think the dealer's argument is not
as strong as SEC, because big investor can always break a large block
of order into small ord |
|
g*****d
发帖数: 210 | 10 Hi all,
Lst say a input signal IP with 0~200KHz bw is sampled at fs=16MHz (lets call
it X), then pass through a 1st order CIC decimation filter (R=8, M=1) to
get 2MHz output (lets call it Y).
Let define Δf as shifting the signal to center at f, so
X = IPΔ0 + IPΔ16M + IPΔ32M ...
and sinc is the sinc function without alias
1. What does the Y spectrum now look like ???
Should it be (X* sincΔ0)Δ0 + (X* sincΔ0)Δ2M +(X* sincΔ0)Δ4M ...
or X* sincΔ0 + X* sincΔ2M + X* sincΔ4M ...
2. How |
|
c*******n
发帖数: 32 | 11 Hi,
I'm having problems with decimal precision in Mathematica. I am trying the
following command in Mathematica:
\!\(Plot[\((\(\(\ \)\((\(-19\) + c\^2 +
\@\(400\ c\^2 + \((\(-19\) + \
c\^2)\)\^2\))\)\)\/\(c\^2\ \((181\[InvisibleSpace]
+ c\^2 + \@\(400\ c\^2 + \
\((\(-19\) + c\^2)\)\^2\))\)\))\), {c, 0.0001, 0.001}]\)
(Try copy and paste it into Mathematica, if that doesn't work...
paste first into Notepad and delete the 5 extra weird characters at the
beginning and then copy that into Mathemati |
|
o******6
发帖数: 538 | 12 ☆─────────────────────────────────────☆
purelens (热湾) 于 (Sat May 3 15:46:32 2008) 提到:
Hi All,
Could anyone here kindly advise me how to convert decimal-number to fraction
in R, such as 0.015625 to 1/64 ?
Thank you and appreciate your big help.
☆─────────────────────────────────────☆
kunkunred (血红) 于 (Mon May 5 16:46:46 2008) 提到:
I don't know R, but mathematically you want to do the following.
Here's how to convert 0.015625 to a fraction ...
There is not much that can be d |
|
P******d
发帖数: 137 | 13 I am trying to convert 19 digits decimal number into hexdecimal. Here is my
code. However, the last 2-3 digits of converted hex number are 0, which is
not correct.(The right hex number should be 40000104A027F1A6, however the
result given by the code is 40000104A027F000) Can anyone help on this?
Thanks a lot.
DATA test;
INPUT ID $19.;
CARDS;
4611687137805857190
;
run;
data test1;
set test;
length hex $16. hexx1-hexx16 ... 阅读全帖 |
|
f**d
发帖数: 768 | 14 这是一本计算神经科学的优秀著作，全文拷贝这里（图和公式缺），有兴趣的同学可以
阅读
如需要，我可以分享PDF文件（－－仅供个人学习，无商业用途）
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
|
a*********3
发帖数: 660 | 15 定义 definition变量 variable面积 area直径 diameter半径 radius公式 formula
单价 unit price范围 range/scope/extent集合 set法则 principle本金 principal利
率 interest rate利息 interest单利 simple interest复利 compound interest正数
positive number负数 negative number解析式 analytic expression分类讨论
classified discussion性质 nature （不是很确定）奇函数 odd function偶函数
even function对称 symmetric坐标原点 origin单调性 monotonicity（不是很确定）
任意 random周期性 periodic 有界性 boundedness 数学 mathematics, maths(BrE)
, math(AmE) 公理 axiom 定理 theorem 计算 calculation 运算 operat... 阅读全帖 |
|
r******g
发帖数: 138 | 16 对第四轮
public static String getDecimal(int a, int b){
if(a == 0)
return "0.0";
if(b == 0)
return "";
StringBuilder res = new StringBuilder();
res.append(a/b);
res.append(".");
int c = a;
HashMap mod = new HashMap();
ArrayList decimals = new ArrayList();
int index=0;
while(c%b !=0 && !mod.containsKey(c%b)){
... 阅读全帖 |
|
z**********e
发帖数: 22064 | 17 第十位：Refute
“Refute” means to“disprove with evidence” and yet it's commonly used,
even by professional writers, to mean“rebut” which carries a similar
meaning but isn’t quite so strong, as it can also mean“argue against.”
The example here(“Simon Cowell refutes‘scandalous’ claims he helped
billionaire hide assets from wife he was divorcing”) is from a recent Daily
Mail article. For those outside the UK, the Daily Mail is a newspaper which
regularly rages against falling educational standards. A sp... 阅读全帖 |
|
f****g
发帖数: 4248 | 18 梦老，不准嘲笑我们化学WSN。
This is a very common question, and it is due to the use of different definitions of the prefixes kilo-, mega-, and giga -. The true meanings of these are thousands, millions, and billions. However, in binary arithmetic 1000 is not an integer power, but 1024 is. Because this is close to 1000, early computer scientists started calling it a kilo also, and it continues to this day.
So, we now have the two sets of definitions for these prefixes; decimal notation and binary notation. ... 阅读全帖 |
|
n********n
发帖数: 8336 | 19 还有一种是DECIMATION
http://en.wikipedia.org/wiki/Decimation_(Roman_army)
Decimation (Latin: decimatio; decem = "ten") was a form of military
discipline used by senior commanders in the Roman Army to punish units or
large groups guilty of capital offences such as mutiny or desertion. The
word decimation is derived from Latin meaning "removal of a tenth".[1] The
procedure was a pragmatic attempt to balance the need to punish serious
offences with the practicalities of dealing with a large group of off... 阅读全帖 |
|
D****P
发帖数: 229 | 20 Microsoft Excel retains 15 significant digits. To display all 15 digits, you
must use a number format (custom or built-in) other than General. The
General number format displays up to 11 numeric characters, with the decimal
point counting as a numeric character. Therefore, if the number contains a
decimal point, Excel can display up to 10 significant digits, but if the
number does not contain a decimal point, Excel can display up to 11
significant digits Adding more numbers to the left of the de... 阅读全帖 |
|
L*****e
发帖数: 8347 | 21 我们一般讲的多少G是decimal size，而系统报的是binary size.
1G(in decimal) = 0.93G(in binary)
32G(in decimal) = 29G(in binary)
64G(in decimal) = 59G(in binary)
2G就是这么差出来的。。。
windows RT, Office, 还有其它build-in apps占了8G
预留的recovery空间5G
所以29G - 13G = 16G； 59G - 13G = 46G |
|
l**********1
发帖数: 5204 | 22 How to sort a generic List
After reading this post from Steven Smith I thought I should write something about it.
Sorting a generic List is pretty straightforward if you know how to do it. With C# 2.0, anonymous
methods come at hand, as well as the little known Comparison delegate (check out this post for more
information about this class as well as other useful classes new to C# 2.0).
Ok, let's suppose we have a product class (let me save some space by using C# 3.0 syntax).
-----
Publi... 阅读全帖 |
|
l*******1
发帖数: 16217 | 23 说了，中国的PI值在中古时代最准
https://en.wikipedia.org/wiki/Pi
Antiquity
The best known approximations to π dating before the Common Era were
accurate to two decimal places; this was improved upon in Chinese
mathematics in particular by the mid first millennium, to an accuracy of
seven decimal places. After this, no further progress was made until the
late medieval period.
In ancient China, values for π included 3.1547 (around 1 AD), √10 (100 AD,
approximately 3.1623), and
142
/
45
(3rd century, approximatel... 阅读全帖 |
|
s***h
发帖数: 487 | 24 这里的 decimal 泛指可以用一个符号序列表达，不一定需要十进制。
countable / decidable / computable numbers 不是同一概念。
: 不是decimal的问题。代数数很多也decimal。
: 因为超越数是不countable的，所以不可以全部在计算机/物理过程中表达
。当然
，可以
: 表达countable无穷个超越数，但对计算/物理任意给定的“一般&
rdquo;的超越数没有
意义。
: 严格一点说，物理过程能够测量的是代数数部分。举例说那个-1/12的拉
马努金
和。而
: 其它部分压根可能就不是已知的数，如R部分。 |
|
f********d
发帖数: 51 | 25 what do you think of this? it's good or bad??
def shanghaiGold = `LN_GOLD * `GBPvCNH * (1 + `SHIBOR)
for example this is how you calculate shanghai gold price by london gold.
now it's good, because you can understand what this function does very
easily
and ` is a function to convert to a list of big decimal, + being overriden
for the list of big decimal. the same as *. the return type is also a list
of big decimal rather than a single number.
there are tons of function calls and conversions in t... 阅读全帖 |
|
l*********m
发帖数: 16971 | 26 There’s a form of the securities fraud known as naked short selling that is
becoming very popular and lucrative to the Market Makers that practice it.
It is known as “Cellar boxing” and it has to do with the fact that the
NASD and the SEC had to arbitrarily set a minimum level at which a stock can
trade. This level was set at $.0001 or one-one hundredth of a penny. This
level is appropriately referred to as “the cellar”. This $.0001 level can
be used as a "backstop" for all kinds of market maker... 阅读全帖 |
|
B*****y
发帖数: 581 | 27 Assume Xn = 0.9999...(n 9s after the decimal)
10*Xn = 9.99999 ( (n-1) 9s after the decimal)
Therefore,
10Xn-Xn = 8.99999...1 ( (n-2) 9s after the decimal)
10* Xinfininty - Xinfinity is only infitely close to 9, but it could never
be 9.
That is, 10X-X could never be 9. |
|
P*********t
发帖数: 4451 | 28 geeez
wiki did exactly what my son would have done.
wow graphic.. cannot copy...
"
[edit] Digit manipulation
When a number in decimal notation is multiplied by 10, the digits do not
change but the decimal separator moves one place to the right. Thus 10 × 0.
999… equals 9.999…, which is 9 greater than the original number. To see
this, consider that in subtracting 0.999… from 9.999…, each of the digits
after the decimal separator the result is 9 − 9, which is 0. The final
step uses algebra: |
|
s*****g
发帖数: 1055 | 29 I googled:
B'L : Legendre's Constant = 1
Sum(1/2i) : 1 + (1/2) + (1/4) + (1/8)... = 2
3 : HTML Character code for "3". &# is a prefix normally given for
these characters, the 'x33' means 33 base 16 (or 51 decimal). Note if you
type "3" into a Reddit comment you get "3" :)
2-1 (mod 7) : In normal modular arithmetic, subtract the "mod" from the
calculation until you get a number less than the "mod". So 15 mod 11 = 4. In
inverse modulo arithmetic, you're asking what number, when multiplied... 阅读全帖 |
|
d*o
发帖数: 108 | 30 I have a data file with numbers in a access table (i am using office 2000)
I want to export it to an text file. It works fine. the only problem
is that the data in text files have only 2 decimal points, while
the original talbe have 9 decimal points therefore, a big loss
of accuracy. How can I do it so that I can have all 9 decimal points
in the exported file? (the advance option in export specification
seems no mention of number format.) |
|
i********r
发帖数: 12113 | 31 x:decimal(30,10)
y:decimal(20,5)
x*y => decimal(30+20+1, 10+5)
这样precision就51>38，好像系统自动把scale降级到6，是不是这样？我怎么样才能提
高scale，比如保持10 |
|
P********e
发帖数: 2610 | 32 in c++:
template
T preci(T d, int wid)
{
T decimal = (T)((int)d);
T t = d - decimal;
while(wid-->0) t*=10;
t = (T)((int)t);
while(t>1) t/=10.0;
return decimal + t;
} |
|
k**f
发帖数: 372 | 33
You are right. The textural decimal representation of the fractional part of
some floating point, e.g. 0.1, may not be precisely represented in binary.
But LP was asking output floating point in the memory to a text file.
Theoretically, if you allow enough digits after decimal points, the floating
point number can be precisely represented in decimal. But the run-time
library usually have a limit for the number of effective digits (17 in MS VC
++ 2008) in %f format using printf(). You can defini |
|
d******k
发帖数: 4295 | 34 这个不是精度的问题，是.net怎么储存double
A mathematical or comparison operation that uses a floating-point number
might not yield the same result if a decimal number is used, because the
binary floating-point number might not equal the decimal number. A previous
example illustrated this by displaying the result of multiplying .1 by 10
and adding .1 times.
When accuracy in numeric operations with fractional values is important, you
can use the Decimal rather than the Double type. When accuracy in numeric
operat... 阅读全帖 |
|
a9
发帖数: 21638 | 35 google is your friend
function round(value, decimals) {
return Number(Math.round(value+'e'+decimals)+'e-'+decimals);
} |
|
b*******n
发帖数: 5065 | 36 how to get more decimals of the returned values in
Matlab or Maple Functions?
let say, in matlab, some function ,by default, it returns 5 decimal values.
how if I want 6 or more decimals? |
|
m*****n
发帖数: 3575 | 37 顶楼是评论我承认，我只是懒得在这里亮真东西。不过既然你有兴趣，给你出道题吧：
infinitedecimal 究竟是已经有 infinite decimals
还是 finite decimals growing ？（indefinite decimals) |
|
Q***5
发帖数: 994 | 38 You can prove that for any irrational number r, the set A of the decimal
part of k*r (k=1,2,3,...) is dense in (0,1)
Sketch of proof:
(1) A contains infinite elements, otherwise, there exists m, n(m is not
equal to n), such that the decimal part of m*r and n*r is the same, i.e. (m-
n)*r is integer, but that means r is rational.
(2) For any x >0, there exists a,b in A, such that |a-b|
the subset B of A: B consists all the decimal part of k*a and k*b. Notice
that, this means [0,1 |
|
w*********r
发帖数: 42116 | 39 www.bfsu.edu.cn
IP: 202.108.5.131
Decimal: 3396076931
Hostname: 202.108.5.131
lib.bfsu.edu.cn
IP: 60.247.76.35
Decimal: 1022839843
Hostname: 35.76.247.60.static.bjtelecom.net
35.76.247.60在美国。 |
|
|
发帖数: 1 | 41 不是decimal的问题。代数数很多也decimal。
因为超越数是不countable的，所以不可以全部在计算机/物理过程中表达。当然，可以
表达countable无穷个超越数，但对计算/物理任意给定的“一般”的超越数没有意义。
严格一点说，物理过程能够测量的是代数数部分。举例说那个-1/12的拉马努金和。而
其它部分压根可能就不是已知的数，如R部分。 |
|
s***h
发帖数: 487 | 42 数学里面确实有很多问题，从 CS 角度看，本质是 sum of undecidable numbers。
这类问题，CS 不能说 Math 有错，因为是 out of scope of CS 。
: 不是decimal的问题。代数数很多也decimal。
: 因为超越数是不countable的，所以不可以全部在计算机/物理过程中表达
。当然
，可以
: 表达countable无穷个超越数，但对计算/物理任意给定的“一般&
rdquo;的超越数没有
意义。
: 严格一点说，物理过程能够测量的是代数数部分。举例说那个-1/12的拉
马努金
和。而
: 其它部分压根可能就不是已知的数，如R部分。 |
|
|
|
|
P****i
发帖数: 12972 | 46 潜艇造得太重了，多出70吨，是因为小数点点错了。不亏是拉美国家的祖宗。
http://o.canada.com/news/spain-builds-submarine-70-tons-too-heavy
HARTFORD, Conn. — A new, Spanish-designed submarine has a weighty problem:
The vessel is more than 70 tons too heavy, and officials fear if it goes out
to sea, it will not be able to surface.
And a former Spanish official says the problem can be traced to a miscalcula
tion — someone apparently put a decimal point in the wrong place.
“It was a fatal mistake,” said Rafael Bardaji, who until recent... 阅读全帖 |
|
|
l****z
发帖数: 29846 | 48 The Collapsing Obama Doctrine
Rarely has a U.S. president been so wrong about so much at the expense of so
many.
By
Dick Cheney And
Liz Cheney
Updated June 17, 2014 7:34 p.m. ET
As the terrorists of the Islamic State of Iraq and Syria (ISIS) threaten
Baghdad, thousands of slaughtered Iraqis in their wake, it is worth
recalling a few of President Obama's past statements about ISIS and al Qaeda
. "If a J.V. team puts on Lakers' uniforms that doesn't make them Kobe
Bryant" (January 2014). "[C]ore a... 阅读全帖 |
|
发帖数: 1 | 49 再看这个。
"Obama Has Decimated His Own Party Unlike Any Other Modern President"
http://observer.com/2015/11/obama-has-decimated-his-own-party-u
Under Mr. Obama, Democrats have lost 13 net Senate seats, 69 House seats, 11
governorships, a whopping 913 state legislature seats and 30 state
legislature chambers, according to analysis from the Washington Post.
That makes Mr. Obama the overseer of the biggest loss in Senate seats, House
seats and state legislature seats of any of the past seven two-term
p... 阅读全帖 |
|
m********g
发帖数: 10469 | 50 估计希拉里不尿这帮子落水狗
National Review to Endorse Hillary?
By Mike Stopa
- Satire -
Word is out that the National Review, known as the soul of intellectual
conservatism since its founding 60 years ago by conservative icon William F.
Buckley Jr., is planning to endorse Hillary Clinton for President.
According to a possibly informed source claiming to be close to the magazine
’s editorial board and demanding anonymity, assuming that businessman
Donald Trump is crowned the Republican nominee at the upcoming... 阅读全帖 |
|
