r**********e
发帖数: 587 | 1 whole-genome数据来call structural variation(SV)和copy number variation（CNV）
一般SV就是三种signal, read-pair(RP), read-depth(RD), split-read(SR)
1000Genome project里用了一些比如Breakdancer，CNVnator这样元老型的软件，但缺
点是都只用一种signal
现在使用combine multiple signal的软件越来越多并且成了主流，比如Delly。Delly
主要是基于SR和RP，当然现在也有了后期基于RD的filter
SV的问题是，SV本质过于复杂，有不同size，不同type的SV，一种signal或者
algorithm很难完全对付，所以sensitivity和specificity都不高（跟SNP calling比起
来）；为了得到更好的结果，有两种想法：
1. 对于一个genome，把Breakdancer，CNVnator，Delly等等的结果merge起来；只挑选
出同时被好几种tools支持的SV calling... 阅读全帖 |
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K**R
发帖数: 193 | 2 个人感觉，其实anova 有时候不太适合生物，虽然整体都明显，显著性不好，毕竟生物
variation比较大，
比如10， 7， 5，
第二组 2.8 3.1， 3.1
第三组 1.2， 1.7， 1.9
用anova 可能就没有差异，因为第一组variation大， |
|
c*********r
发帖数: 1312 | 3 多谢大牛给建议！
因为要用到一个软件HyLiTEhttps://hylite.sourceforge.io/做杂合体中的Allele-
specific expression，类似相当于人里边检查小孩基因组里来自父亲和来自母亲的等
位基因分别的表达水平，只不过我的实验里是用的来自两个不同物种的父亲和母亲以及
他们的杂交后代，在杂交后代里检查来自两个物种的基因的各自表达水平，从而研究基
因调控。这两个物种种内的突变就有4-5% (Coding sequence低一些，Stampy map结果
显示整体平均在1.7%-3.4%之间，个别基因肯定会超出这个范围)，种间的突变更高，用
stampy map结果显示整体平均的variation比例在7%左右。第一步怎么mapping是个很头
疼的问题。
HyLiTE可以使用一个亲本的genome/transcriptome做reference，自动分析allele-
specific expression，比较省心。默认的是用bowtie，但是bowtie最大的突变率好像
是5%(1 mismatch per 20 bp seed?)。所以我... 阅读全帖 |
|
a****o
发帖数: 6612 | 4 其实你没有必要解释Hamiltonian, 或者分子轨道, 或者第一和第二量子化。能看懂你
问题的肯定有这些背景。但是你对那个投影算符没有解释清楚。好奇一下，你的公式(1
) 求和符号下面为什么没有j ? 如果你用CCSD, 你是基于原子轨道积分（alpha, beta)
还是基于分子轨道积分(比如i, j，说实在的，我不懂你图片里i， j的含义）。 我的
理解是对于多电子体系，能量算法涉及到四个电子轨道 (i, j, k, l).
如果真的对应CCSD的话，你可以尝试用的你参数（平方？可能有phase factor的问题需
要解决。）替换amplitudes t_ir, t_ijrs (i, j是占据轨道，r, s是空轨道）。
商业化的软件里CCSD的解不是"variational". Variational CC 的理论有，但是计算公
式展开有无穷多项，而现在通用的方法是有限多项。
即使你能够代入计算，也得不到你倒过来第二个公式的能量。还有，我估计你用参数算
出来的能量，误差太大，没有实际用途。 |
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t*****e
发帖数: 224 | 5 http://www.blogchina.com/new/display/24224.html
数学的故事 二○○四年二月十九日
张五常
深圳薛兆丰跑到美国去深造经济学，不久前给我电话，说读到我一九六九年发表的关
于合约选择的文章，见内里一条古怪方程式，难看之极，问是什么东西。我知道阿丰曾经
攻读数学，忍不住纵声大笑，说：「那是大名鼎鼎的统计学上的coefficient of
variation呀，是我昔日发明的！」
跟着告诉他如下的故事。一九六八年，在芝大，史德拉（G. J. Stigler）读到阿丰
最近见到的文稿，邀请我提供该文在他举办的工作室研讨。一天我到史老兄的办公室倾谈
，他拿起该文，指着阿丰见到的难看之物，说：「史提芬，这怪物害得我花了个多小时，
才知道原来就是coefficient of variation！」我不懂数的大名是从那天开始的。我见既
然是自己的发明，刻意不改。也好，史德拉一九九一年谢世，今天我可见怪物而思故人也
。
一九六九年，在后来也是屡见经传的关于合约结构的文章内，我以数学证明，公海渔
业的租值消散，渔民的数字要达到无限才可以全部消散的。该文一九七○年 |
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s******g
发帖数: 2 | 6 Mismatch variation is not like process variation.
It is normally a function of mismatch parameter and size of device.
You need ask your foundary to provide, otherwise it won't be accurate.
chart
write |
|
l***y
发帖数: 28 | 7 In my opinion, both of them deal with failure although the failure modes may
be different. Just like Razor, when the VDD is low enough, it temporarily
fails but we need to be able to recover from the failure. The reliability
issue may last longer and even forever. And also, lower-power design has to
consider huge PVT variation, right? We have leave large margin or come up
with a good mechanism so that variation won't cause big trouble. |
|
x***g
发帖数: 454 | 8 1. Draw the connection with 3 single-ended inverters in series. Can you do
with 2 inverters? Why? Draw the differential version.
2. How to size PMOS transistor sizes relative to NMOS to get the symmetric
rising/falling edges? Why we want to do this?
3. Now if we increase all the transistors’ sizes by 10X, what will be the
new oscillation freq ?
4. Typical ring oscillator duty cycle variation range across PVT?
Which one of the PVT variations affects the most? Methods to adjust
the duty cycle clos... 阅读全帖 |
|
w*********n
发帖数: 2 | 9 1. Draw the connection with 3 single-ended inverters in series. Can you do
with 2 inverters? Why? Draw the differential version.
-2 single ended inverters cannot oscillate, differential version can, take 2
-stage differential as 4-stage single ended;
2. How to size PMOS transistor sizes relative to NMOS to get the symmetric
rising/falling edges? Why we want to do this?
-Symmetric rising/falling edge can achieve better flicker noise, refer to
Hajimiri noise model;
3. Now if we increase all the tr... 阅读全帖 |
|
x***g
发帖数: 454 | 10 1. Draw the connection with 3 single-ended inverters in series. Can you do
with 2 inverters? Why? Draw the differential version.
2. How to size PMOS transistor sizes relative to NMOS to get the symmetric
rising/falling edges? Why we want to do this?
3. Now if we increase all the transistors’ sizes by 10X, what will be the
new oscillation freq ?
4. Typical ring oscillator duty cycle variation range across PVT?
Which one of the PVT variations affects the most? Methods to adjust
the duty cycle clos... 阅读全帖 |
|
w*********n
发帖数: 2 | 11 1. Draw the connection with 3 single-ended inverters in series. Can you do
with 2 inverters? Why? Draw the differential version.
-2 single ended inverters cannot oscillate, differential version can, take 2
-stage differential as 4-stage single ended;
2. How to size PMOS transistor sizes relative to NMOS to get the symmetric
rising/falling edges? Why we want to do this?
-Symmetric rising/falling edge can achieve better flicker noise, refer to
Hajimiri noise model;
3. Now if we increase all the tr... 阅读全帖 |
|
y******n
发帖数: 6 | 12 HI，
CALCULUS OF VARIATIONS 的中文名是什么？
A VARIATIONAL METHOD 的中文呢？
谢谢。 |
|
B****n
发帖数: 11290 | 13 I believe we can assume it's a differential curve that divides a sphere into
two equal areas. But maybe someone can give a more rigous proof for this
approximation.
In the following, I denote the curve as (t,f(t)) t in [0,1] and assume it's a
unit sphere with center at 1/2
1. We can only consider bounded variation curve otherwise its length can not
be minimal.
2. For bounded variation curve, its root is countable. Here I define root as a
real number a such that f(a)=0 and there exists a epison s |
|
B****n
发帖数: 11290 | 14 我對於Icare的證明非常佩服
我的證明確實比較囉唆 不過它應該可以推廣到任意有對稱軸的二維圖形都是對稱軸
為最短的等分曲線 我稍微修改了一點之前的證明 讓它可以推廣
I denote the graph as (t,f(t)), t in [0,1], with x-axis as its symmetric axis.
1. We can only consider bounded variation curve otherwise its length can not
be minimal.
2. For bounded variation curve, its root is countable. Here I define root as a
real number a such that f(a)=0 and there exists a epison such that f(a-c)<=0<
f
(a+c) or f(a-c)<0<=f(a+c) for any 0
3.Since the root is countable, we can deno |
|
f**********d
发帖数: 4960 | 15 riemann(lebesgue)-stieltjes积分要求integrator是bounded variation funciton,
即两个不减函数差。而根据jordan分解，所有测度都可分解为正，负测度，
因此integrator即只要求在积分域上分配有限测度即可了，
bounded variation function实际上即是在积分域上有限的测度（函数），并没有任何
特殊之处。对吧？ |
|
Q***5
发帖数: 994 | 16 没有bounded variation 条件你证明不了你所说”测度“ 的sigma可加性。
不用bounded variation 的办法也是有的，比如ITO积分，但你得放弃对每个路径都定
义测度的想法。 |
|
t**k
发帖数: 260 | 17 Given a joint distribution P(A,B,C), we can compute various marginal
distributions. Now suppose:
P1(A,B,C) = P(A) P(B) P(C)
P2(A,B,C) = P(A,B) P(C)
P3(A,B,C) = P(A,B,C)
Is it true that d(P1,P3)>=d(P2,P3) where d is the total variation distance?
In other words, is it provable that P(A,B)P(C) is a better approximation of
P(A,B,C) than P(A)P(B)P(C) in terms of the total variation distance? |
|
N*******a
发帖数: 94 | 18 汽车行业，机械或工业工程背景
有兴趣发简历到我Email：[email protected]
-------------------------------------
Project Engineer Responsibilities
· Studying and analyzing the order and consulting on the order with
the client, Project Manager / Project Engineer, internal departments and
suppliers
· Providing leadership on a project basis to approximately 7 – 10
project team employees (such as Project Designers, Assistant Project
Engineers or Project Controls Engineer) or externally hired engineers /
fi... 阅读全帖 |
|
c**a
发帖数: 316 | 19 下个学期要选课了, 在考虑是选 Time Series 还是 PDE.
都是 Graduate LV 的.
另外选了两门是 Analysis B 和 Variational Analysis
这两门对 Quant 有用吗?
个人理解 Analysis B 是基础.
但是 Variational Analysis 就拿不准了. |
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w**********y
发帖数: 1691 | 20 多谢分享.大概做了做..欢迎补充和指正.
- sqrt(i)=?
e^{\pi/4 i} or - e^{\pi/4 i}
- You and me roll a dice,first one gets a six wins. You roll first. what
is the probability of you winning?
P(I win) = P(Y !win and I win) = 6/11
- A stair of n steps. Each time you step up 1 or 2 steps. How many
different ways are there to reach the top? what is the asymptotic limit?
Fibonacci sequence ..limF(n)/F(n-1)==x for n>2, solve x, and F(n) ~ x^{n-1}
- Moment generating function of standard model.
statistic book…
- Write a si... 阅读全帖 |
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t*******y
发帖数: 637 | 21 第二题应该是6/11吧
能讲讲这个吗? - X1 and X2 are independent random variable with pdf f and g.
what is what is the pdf of X=X1+X2
Jacobian matrix for X1+X2 and X1-X2..
多谢分享.大概做了做..欢迎补充和指正.
- sqrt(i)=?
e^{\pi/4 i} or - e^{\pi/4 i}
- You and me roll a dice,first one gets a six wins. You roll first. what
is the probability of you winning?
P(I win) = P(Y !win and I win) = 5/6*1/6
- A stair of n steps. Each time you step up 1 or 2 steps. How many
different ways are there to reach the top? what is the asymptotic... 阅读全帖 |
|
g******r
发帖数: 29 | 22 well, given 2 random processes X Y
i think we can define the correlation of X Y
as the correl(X_t, Y_t),
if dX_t = a_t dB_t
dY_t = b_t dW_t where B W two brownian motions
the quadratic variation of X_t and Y_t
E[\int_0^t a*b ] = E[\int_0^t a dB * \int_0^t b dW] = cov(X_t, Y_t)
is the quadratic variation of B and W
.
(t |
|
k****o
发帖数: 11 | 23 first variation is infinity, quadratic variation is t. |
|
p**e
发帖数: 41 | 24 1,mutilated chessboard variations
original:
If two opposing corners of a 8*8 chessboard are removed, can the
mutilated board be completely covered with 31 dominoes in such a way
that each domino covers 1*2 squares?
Variation 1:
Consider an 8x8 chessboard with one corner missing (so a total of 64-
1=63 squares). Can it be covered with 21 triominoes (dominoes that are
3*1 squares instead of the traditional 2*1)?
What if the triominoes are in an L shape instead of a line?
please give the proof as w... 阅读全帖 |
|
y******i
发帖数: 199 | 25 我的意思是，mean reverting的drift term对quadratic variation有影响，而线性
drift term对quadratic variation没有贡献。 |
|
o****o
发帖数: 8077 | 26 If my understanding is correct, I tried the following:
SVD on the four series combined with data standardized with mean=0, std=1, obtain the right eigenvector matrix, and
the first eigenvector explains >61% variation, while the second eigenvector
explains 29% variation.
What we got is:
flow11 flow12 flow21 flow22
Prin1 0.4381 0.6096 0.2246 0.6213
Prin2 -0.5565 0.0353 0.8281 0.0585
Using Prin1 difference as similarity measurement, the smaller m |
|
F****n
发帖数: 3271 | 27 理想状态下，IVs应该是 uncorrelated, 但实际上他们或多或少的会有一些相关性，当
相关性并不强或multicollinearity在可忍受范围内时，常常直接MODEL。但在弱相关的
情况下，IVs的Coeff显然受顺序的影响。比如
Y =b1X1 + b2X2 + b0 算出来的coefficients 和
Y =b2X2 + b1X1 + b0 不一样 (OLS)。
假设X1, X2 each accounts for 40% of Y variation when modeled separately, but
when modeled together only account for 70% (as indicated by R square). So:
1) Can we say there is 10% (80%-70%) of Y variation explained jointly by X1,
X2?
2) If so can we say b1 actually is calculated to reflect 40% variability of |
|
a****m
发帖数: 693 | 28
不过没搞懂搞这东
东有什么用？ 懒得google了。谁给展开说说pca和cluster analysis有啥区别一律30伪
币怎么
样？
PCA, 是找最能体现和解释variation的假设的variable， 多数是几个variable的线性
组合，但
是没有多少意义。而且very sensitive outlier.
cluster，是找similarity, 就是用距离去量最近的samples, 当然多少个cluster，
usually
it is arbitrary. 但是可以用不同的cluster 能解释within group and between
group
variation 去选择。
不知道多少能让大家同意？ |
|
e*****t
发帖数: 642 | 29 一组100个病人。在24小时内，每个小时测12次血压。想看看血压的variation（因为
variation更能体现hypertension）。文献上都是把这100个人，每小时的血压standard
deviation 求个平均值，也就是说，求 mean of every one's SD。那如果想比较第一
个小时和第二个小时mean of SD是否有统计上的差异，是用F test 还是t test？我知
道F test用来检验SD，但这里是mean of SD，不知道该用那种test。多谢 |
|
l*********s
发帖数: 5409 | 30 Surely there will be variation, unless the sample to begin with has zero
variance.
Its feasibility does not reply on normality or CLT, so it is more general.
可因为只有一个样本，怎么bootstrap显然都找不到variation。 |
|
d******9
发帖数: 134 | 31 B trial的结果还不晓得
A trial中两种treatment几乎没有difference...几个 outcomes的odds ratio都在1.0-
1.2之间,CI都在0.45-4.5的样子. variation?你是说A实验两组数据各自的variation吗? |
|
A*******s
发帖数: 3942 | 32 hey, look at my post:
if data are DENSY near boundaries...
which suggest some truncated/censored nature behind what u see. that is the
origin of latent variable models for bounded outcome.
if u don't buy it, try my example after u delete all the 0 and 1 Y, and
print out the residual plot.
or u can just simply google beta regression. Here is some explanation about
the need of beta regression:;
How should one perform a regression analysis in which the dependent variable
(or response
variable), y, ... 阅读全帖 |
|
p********a
发帖数: 5352 | 33 ☆─────────────────────────────────────☆
cici (full house) 于 (Mon Nov 7 08:33:47 2011, 美东) 提到:
对于logistic regression
log（pi/1-pi）=b0+b1x1+b2x2
我现在已知independent variables和response variable{log(pi/1-pi)}
我要怎么做才能把参数b0,b1,b2 fit出来？非常感谢
☆─────────────────────────────────────☆
sleephare (I+don't+know.) 于 (Mon Nov 7 14:16:38 2011, 美东) 提到:
SAS, R?
☆─────────────────────────────────────☆
cici (full house) 于 (Mon Nov 7 16:19:05 2011, 美东) 提到:
R,thanks
☆────────────────────────────────────... 阅读全帖 |
|
w*******9
发帖数: 1433 | 34 Sorry I wish I could help you and I will be very happy if someone could
teach both of us on this point.
My understanding is that R^2 and numerous adjusted/generalized R^2s are all
designed with the desire to assess the goodness of fit by a unitless number
between 0 and 1. They are generally not associated with the proportion of
variation. Only in OLS (with unknown intercept) the R^2 is interpreted as
the proportion of variation explained off by the covariates.
Since there are more popular goodne... 阅读全帖 |
|
a******1
发帖数: 201 | 35 1. Only professionals can define the variation in your case, the data
analysts can't. Since you are asking the question with the correlation
coefficient, I assume that as a professional in your field (biology?), you
know that is being used to quantize the variation.
2. In your case, you have two samples with size of 45 and 28, and you would
like to compare the means. The classic and best approach is to use t-test as
suggested. But please note that the each sample does not consists of
independent... 阅读全帖 |
|
f****1
发帖数: 289 | 36 也就是没有multi－colinearity的问题，multiple regression或者model selection的
时候就只有其中2个显著，其余变量都out了。既然他们不correlate, 难道不是每一个
都能解释一部分的variation才make sense 吗？
这是不是说明这个2个变量比其他变量能explain greater percentage of variation
of the response variable, 但是并不一定有cause and effect的关系呢？ |
|
u*h
发帖数: 397 | 37 这种情况属于mixed model.
例子：
三只老鼠， m1, m2, m3.
每只老鼠取三次血样， 测量血糖浓度：m1_s1, m1_s2, m1_s3, m2_s1, ... m3_s3.
假设，全体老鼠血糖的平均值是u,
每只老鼠的平均血糖浓度为u1, u2, u3:
u1 = u + error1, u2 = u + error2, u3 = u+error3.
假设这里 error1， error2, error3 是正态分布， variation 是 sigma1
那么每次测量的血糖浓度可以表达为：
m1_s1 = u1 + error11
m1_s2 = u1 + error12
ml_s3 = u1 + error13
...
m3_s3 = u3 + error33
这里，假设 error11, error12, error13,...,error33是正态分布， variation is
sigma2.
这时候， 需要用mixed model 才能同时分析出u, sigma1 and sigma2.
？b |
|
y*****3
发帖数: 961 | 38 Finding the perfect resume is like talent scouting for recruiters. There are
so many who want to make it that we can’t look at them all, so we only
look at the fastest and the strongest. Also like talent agents, we don’t
have time to give each one a thorough examination the first time through and
will probably only spend eight seconds looking at the top half of your
resume before we decide if you’ll make the team. So how do you get your
resume to be big, strong, and easily visible to us hiring m... 阅读全帖 |
|
s*******9
发帖数: 177 | 39 高龄产妇， 二胎，等明年生产时已经39了.先做了maternity T21 plus正常。觉得不放
心，在18周时做了一个羊穿，自己掏腰包加选了microarray （这个查得更细，不加选
这个就是普通的羊穿， 心想既然反正做羊穿要扎一针的， 还不如就这个机会做的全面
一些）。 普通的羊穿结果没问题，但是microarray 发现了8号染色体
上多了一小块（8p23.1), 大小大约0.73Mb。
下面是报告的原文， 觉得写的有点模糊：
No diagnostic copy number were observed, however, one variant of uncertain
significance was identified: a heterozygous copy number gain of 0.73 Mb on
8p23.1 (10,875, 772-11,603,171): MIR598,XKR6,MTMR9,SLC35G5,TDH,C8orf12,
FAM167A,BLK,LINC00208, GATA4 (partial).
This region has n... 阅读全帖 |
|
i*****s
发帖数: 15215 | 40 放狗了，自己看
Zoe is Oreo's filly, born 9-16-98 on the Island of Molokai before we could
move Oreo to our sanctuary. She is extremely rare.
Her unusual color is due to her having "amelanosis". She is not an albino.
She has striking gold stripes and blue eyes. In horses, there is a similar
condition called "Lethal White Foal Syndrome" which is associated with the
occurrence of other serious birth defects. Although this color variation
occasionally occurs in wild herds, the animals would likely survive ... 阅读全帖 |
|
d******e
发帖数: 7844 | 41 你就是想说那两篇文章吧
一篇新的，被热炒的An exact mapping between the Variational Renormalization
Group and Deep Learning 2014
还有一篇老的，Unsupervised Deep Learning implements the Kadanoff Real Space
Variational Renormalization Group 1975
你说的太悬了，看这两篇也不用懂多少statistical physics，知道一点就够了。 |
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p****y
发帖数: 23737 | 42 http://article.yeeyan.org/view/185743/147710
如果你不愿意吃狗肉和猫肉，为什么吃鸡肉?
moviemovie于2010-11-04 00:42:11翻译
作者：布鲁斯．弗莱德茨（Bruce Friedrich）
最近数以亿计的鸡蛋被召回，对于经常食用鸡蛋的大众来说，这无疑是个坏消息。令人
没有想到的是,这样一来，鸡被推到了聚光灯下，全社会都在关注这些鸡肉的来源。
由此产生的的后果就是漫天铺地的媒体报道。无论是黛安．索亚，还是艾米．古德曼的
电视报道(译者注：这两位都是著名的电视记者），无论是纽约时报数篇评论还是CNN的
简．米歇尔深度分析都让美国民众震惊，他们没有料到鸡在美国受到如此残忍的对待。
因祸得福的是美国人因此认识到了鸡的遭遇。在美国的任何地方，数以百万计的鸡被关
在十分拥挤的笼子里，拥挤得无法展开翅膀或者呼吸到新鲜空气。它们的一生就这样度
过，直至死去。每一只鸡蛋都代表着34小时难以化解的痛楚。美国每年消耗九亿只鸡，
消耗量相当于牛的两百倍，猪的一百倍。还没有计算其中有人终止吃红肉，改为吃鸡肉
。这样算下来，实际被吃掉的鸡肉和鸡蛋的... 阅读全帖 |
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w*******y
发帖数: 60932 | 43 Link:
http://downloads.x5music.com/valentine/
tracklist:
1. Tha飐: Meditation - Pieter Schoeman, London Philharmonic Orchestra and
David Parry
2. Symphony No. 2 in E Minor, Op. 27: III. Adagio - Royal Scottish National
Orchestra and Owain Arwel Hughes
3. Suite Bergamasque, L 75: Clair de lune - Finghin Collins
4. Ave Maria (after J.S. Bach) - London Philharmonic Orchestra, London
Philharmonic Choir and David Parry
5. Concerto No. 1 in G Major for Cello and Orchestra: II. Romance: Andantino
- Klau... 阅读全帖 |
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v**********m
发帖数: 5516 | 44 Sir Karl Raimund Popper, CH FRS[1] FBA (28 July 1902 – 17 September 1994)
was an Austro-British[2] philosopher and a professor at the London School of
Economics.[3] He is regarded as one of the greatest philosophers of science
of the 20th century;[4][5] he also wrote extensively on social and
political philosophy.
Popper is known for his attempt to repudiate the classical observationalist
/ inductivist form of scientific method in favour of empirical falsification
. He is also known for his oppo... 阅读全帖 |
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b*******b
发帖数: 30 | 45 Bruce Walker, an AIDS researcher at Harvard University and Massachusetts
General Hospital, has long been
trying to understand why some people with HIV can remain untreated for
decades and never progress to AIDS.
On Nov. 4, Walker and colleagues published research that helps explain these
HIV controllers: genetic
variations that change key proteins in their immune systems.
Walker's team has also found these variants in people of European and
African descent and in Hispanics. His
team hopes their ... 阅读全帖 |
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f******r
发帖数: 2975 | 46 傅雷不是学的音乐啊
我读书的时候有一段时间就听各种不同演奏家的CD
后来听过朗朗讲他弹拉氏和柴氏的曲子在俄罗斯的一些感受
那些钟，觉得蛮有意思的
刚才wiki霍洛维茨找出这个
霍洛维茨有着令人瞠目结舌的演奏技巧，他可以说是有录音以来最具备完美技巧的钢
琴大师。对他来说，钢琴演奏似乎就不存在“技术上的难度”。如果你看过大师在1968
年卡内基音乐厅演奏《卡门主题变奏曲》的情景，你会被他在键盘上电光火石般的神奇
演奏惊得目瞪口呆。这部作品（《VARIATIONS ON A THEME FROM BIIET’S CARMEN》）
是大师为自己创作的一部极具演奏难度的炫技作品。霍洛维茨在弹奏这部作品时，已然
将钢琴演奏变化成为一种高度激烈的竞技运动：此起彼伏的大跨度跳跃击键，密如骤雨
的琶音，左手与右手你追我赶的对抗。这时的大师已经完全成为一个键盘上的魔术师，
给予欣赏者带来的是一个惊叹又一个惊叹。这部变奏曲的难度之大，以至于很少有钢琴
家愿意去触碰。只有多年以后，才由天才钢琴少年ARCADI VOLODOS才在他的同名钢琴专
辑唱片中尝试演奏。
这是Volodos/Bizet: Carmen... 阅读全帖 |
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A*V
发帖数: 3528 | 47 http://en.wikipedia.org/wiki/Paintball_variations
彩弹游戏分类:
******
Woodsball
Speedball
Scenario paintball
******
Basic variations
Capture the Flag - Each team must take the flag from the opponents' flag
station and return it to their own station to win. Alternatively, in a
variation called centerflag, a single flag may be placed in the center of
the field for both teams to compete over.
King of the Hill - Players attempt to capture and hold one or more bases.
Elimination or Slayer - Teams or indiv |
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z***i
发帖数: 8285 | 48 【 以下文字转载自 ClassicalMusic 讨论区 】
发信人: zeami (贼阿米), 信区: ClassicalMusic
标 题: radio, 两个爱哼哼的钢琴家的演奏和其他不爱哼哼的，Jazz/Classical
发信站: BBS 未名空间站 (Thu Oct 19 08:45:50 2006)
http://radio.mitbbs.com:8000/ciel.m3u
内容如下：
Keith Jarrett - Goldberg Variations (harpsichord)
Keith Jarrett - Koeln Concert Part I，II a，II b，II c (Jazz piano)
Keith Jarrett - Radiance, Pt. 1 - 17 (双CD，Jazz piano)
Glenn Gould - Goldberg Variations (1982 Recording)
Glenn Gould - The Well-Tempered Clavier Book1 Nos1-24
Jacques Loussier Trio - |
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p**********d
发帖数: 7918 | 49 April 8, 2010
China Is Reportedly Set to Revise Currency Policy
By KEITH BRADSHER
HONG KONG — The Chinese government is set to announce a revision of its
currency policy in the coming days that will allow greater variation in the
value of its currency, combined with a small but immediate jump in its value
against the dollar, people with knowledge of the consensus emerging in
Beijing said Thursday.
While there remains a possibility of a last-minute glitch that could delay
the announcement, China’ |
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