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全部话题 - 话题: propag
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s*****g
发帖数: 1055
1
来自主题: EmergingNetworking版 - LISP看起来很cool啊
The way I understand LISP:
1. Data plane is more like moving MPLS to customer edge. Today service
provider can have BGP free core by transport IP over MPLS, while LISP
extended this "tunneling" to customer's edge router without customer running MPLS, service provider can still run existing MPLS network or they can have a pure IP core but its routers don't need full internet table. LISP
encapsulation has more overhead than MPLS. However, you can not transport IP/MPLS across multiple SPs (maybe yo... 阅读全帖
w***s
发帖数: 321
2
来自主题: EmergingNetworking版 - LISP看起来很cool啊
其实说MPLS VPN也误导了,就是标准的MPLS + BGP结构,一样的BGP free Core效果,
只是用IPinIP模式,MPLS就可以省了。但是在MPLS方案里面PE还是有全路由,所以LISP
最重要的就是Map-Request功能。
之所以说这个更象H323查询过程,而不是DNS,原因有两个:
1. 系统里面已经有DNS,再搞一个会混淆
2. DNS没有做EID-RLOC转换,还是EID的不同表达方式,而从电话号码到Gateway的映射
更类似于EID-RLOC的关系,Admission Control就不是重点了,不过加上这功能也不错
,实际上在MAP Server上是可以实现一定级别的路由策略的。
最后的问题就是Tunnel End Router选取,取PE,就恢复到原始的MPLS+BGP方案,MAP
Cache的规模多少近似于全路由。CE会好的多,毕竟一个site的用户不会访问整个
Internet,当然DC除外。如果允许有Default RLOC的话,整个方案看起来很不错。

running MPLS, service provider can still run... 阅读全帖
s*****g
发帖数: 1055
3
来自主题: EmergingNetworking版 - LISP看起来很cool啊
The way I understand LISP:
1. Data plane is more like moving MPLS to customer edge. Today service
provider can have BGP free core by transport IP over MPLS, while LISP
extended this "tunneling" to customer's edge router without customer running MPLS, service provider can still run existing MPLS network or they can have a pure IP core but its routers don't need full internet table. LISP
encapsulation has more overhead than MPLS. However, you can not transport IP/MPLS across multiple SPs (maybe yo... 阅读全帖
w***s
发帖数: 321
4
来自主题: EmergingNetworking版 - LISP看起来很cool啊
其实说MPLS VPN也误导了,就是标准的MPLS + BGP结构,一样的BGP free Core效果,
只是用IPinIP模式,MPLS就可以省了。但是在MPLS方案里面PE还是有全路由,所以LISP
最重要的就是Map-Request功能。
之所以说这个更象H323查询过程,而不是DNS,原因有两个:
1. 系统里面已经有DNS,再搞一个会混淆
2. DNS没有做EID-RLOC转换,还是EID的不同表达方式,而从电话号码到Gateway的映射
更类似于EID-RLOC的关系,Admission Control就不是重点了,不过加上这功能也不错
,实际上在MAP Server上是可以实现一定级别的路由策略的。
最后的问题就是Tunnel End Router选取,取PE,就恢复到原始的MPLS+BGP方案,MAP
Cache的规模多少近似于全路由。CE会好的多,毕竟一个site的用户不会访问整个
Internet,当然DC除外。如果允许有Default RLOC的话,整个方案看起来很不错。

running MPLS, service provider can still run... 阅读全帖
h****6
发帖数: 229
5
There was a paper in Nature or Science studying Omeba (I heard it on
radio and didn't read the paper so the spelling could be wrong). Omeba
lives as a single cell generally. However, when the environment
changes to unhabitable, they will come together to form a structure
like an organism. The structure then moves to a high ground. The top
part of the structure will be blown away by wind to new world to
survive. The rest of Omeba will just die, and die. So why would some
20% of Omeba sacrifice fo... 阅读全帖
y***o
发帖数: 416
6
来自主题: Chemistry版 - Organometallics 等五篇文献求助
1. Comparative Theoretical Study on Homopolymerization of α-Olefins by Bis(
cyclopentadienyl) Zirconocene and Hafnocene: Elemental Propagation and
Termination Reactions between Monomers and Metals
Organometallics, 2010, 29 (7), pp 1541–1550
DOI: 10.1021/om900843h
http://pubs.acs.org/doi/pdf/10.1021/om900843h
2. Influence of the Ligand Structure of Hafnocene Polymerization Catalysts:
A Theoretical Study on Ethene Insertion and Chain Propagation
Organometallics, 2008, 27 (14), pp 3390–3398
DOI: 10... 阅读全帖
d********y
发帖数: 176
7
http://onlinelibrary.wiley.com/doi/10.1002/masy.19900320118/pdf
On the nature of active species in cationic ring-opening polymerization of
cyclodimethylsiloxanes
Authors
Pierre Sigwalt,
Vivian Stannett
First published: February 1990Full publication history
DOI: 10.1002/masy.19900320118View/save citation
Cited by: 5 articlesCitation tools
Abstract
Contrarily to cationic ring-opening polymerization of cyclic ethers and of
some other cyclic monomers, for which direct identification of the various
t... 阅读全帖
j***h
发帖数: 4412
8
Earthquake detection systems can sound the alarm in the moments before a
big tremor strikes—time enough to save lives
Japan’s system, which went live in 2007, makes heavy use of personal
technology. Alerts go out not only on television and radio but through
special receivers in homes, offices and schools. Pop-up windows on
computers show a real-time map with the epicenter’s location and the
radiating seismic waves. A timer counts down to the shaking at your
location and highlights predicted inte... 阅读全帖
z******a
发帖数: 582
9
来自主题: EE版 - 郁闷,想转行了~
现在暂时还不清楚具体方向。只知道老师做的主要方向是radio propagation for
wirelesscommunications (advanced propagation modeling & RF channel
characterization )。他做的其它相关方向还有antennas , computational
electromagnetics。
z******a
发帖数: 582
10
来自主题: EE版 - 郁闷,想转行了~
现在暂时还不知道具体方向。只知道老师主要做radio propagation for wireless
communications (advanced propagation modeling & RF channel
characterization )。他做的其它相关方向还有antennas , computational
electromagnetics
晓得他做的这些方向里面哪个出路好一点?
z******a
发帖数: 582
11
来自主题: EE版 - 郁闷,想转行了~
现在暂时还不知道具体方向。只知道老师主要做radio propagation for wireless
communications (advanced propagation modeling & RF channel
characterization )。他做的其它相关方向还有antennas , computational
electromagnetics
晓得他做的这些方向里面哪个出路好一点?
o*******i
发帖数: 396
12
depends on ur prop model.
不同的model又不同的衰减特性
最奸蛋的例子,就是自由衰落。
eg, free space, in \ns-allinone-2.29\ns-2.29\mobile\propagation.cc
你能看到这个函数。自己打printf试试看啊。
这事进入ns2里面搞清wirelessnetwork传输的必经之路
double
Propagation::Friis(double Pt, double Gt, double Gr, double lambda, double L,
double d)
{
/*
* Friis free space equation:
*
* Pt * Gt * Gr * (lambda^2)
* P = --------------------------
* (4 * pi * d)^2 * L
*/
if (d == 0.0) //XXX pr
b*******2
发帖数: 2121
13
这是个基本问题,可是却困扰我很久,一直搞不明白.请高人指教.
(1).根据EM wave 理论里面的定义:
# TE modes: no electric field in the direction of propagation.
# TM modes: no magnetic field in the direction of propagation.
这个很容易理解,就是它们的定义.
(2). 在学习Polarization 的时候,有S and P Polarization 的定义.
P-Polarization: The component of the electric field parallel to incident
plane is termed p-like (parallel)
S-Polarization: component perpendicular to this plane is termed s-like.
这个我也能理解. 是s- 和 p- pol 的定义.
wiki中还有如下定义: Light with a p-like electric fie... 阅读全帖
t**********1
发帖数: 26
14
There is an equation in this book (page 7) as shown below.
l=Tr/D
where l=electrical length of rising edge,in.
Tr=rise time,ps
D=propagation delay, ps/in.
This book also gives an example of a 10kHz ECL signal with a rising edge
of
1ns. This rising edge has a length of 5.6 inch when propagating along an
inner trace of an FR-4 PCB. The electrical length will help you understand
if you need to treat a trace as a lumped or distributed component(
transmission line) for a digital signal.
b**********g
发帖数: 32
15
Does this sound like one of those faster-than-speed-of-light discovery?
Here is my question: Maxwell equation does not consider spin-state - that
would be quantum mechanics. There are two orthogonal polarizations in free-
space propagation for electromagnetic wave propagating in a fixed direction,
so it is true that one can double the capacity using polarization diversity
, provided one has an antenna system that can separate the two polarizations.
If the technique utilizes non-electromagnetic m... 阅读全帖
s***n
发帖数: 116
16
You derived a paradox, but gave a wrong interpolation to the paradox.
The correct answer to the issue is: there is no practical way to
"combine" two beam into one beam as you described. Writing a wave of
magnitude E as E=E1+E2 does not mean you can practically "combine" two
beams of magnitude E1 and E2 into a beam of magnitude E. In fact, think
of the reverse problem might be easy: if you are given a beam of
magnitude E and try to split it, you would not be able to make it into
two beams of m... 阅读全帖
b*******2
发帖数: 2121
17
来自主题: Physics版 - 什么是TE TM mode?
这是个基本问题,可是却困扰我很久,一直搞不明白.请高人指教.
(1).根据EM wave 理论里面的定义:
# TE modes: no electric field in the direction of propagation.
# TM modes: no magnetic field in the direction of propagation.
这个很容易理解,就是它们的定义.
(2). 在学习Polarization 的时候,有S and P Polarization 的定义.
P-Polarization: The component of the electric field parallel to incident
plane is termed p-like (parallel)
S-Polarization: component perpendicular to this plane is termed s-like.
这个我也能理解. 是s- 和 p- pol 的定义.
wiki中还有如下定义: Light with a p-like electric fie... 阅读全帖
S*********k
发帖数: 507
18
来自主题: Physics版 - 激光先驱厉鼎毅去世
From today's NY Times:
Tingye Li (厉鼎毅), Instrumental in the Laser’s Development, Dies at 81
Tingye Li, an electrical engineer whose calculations in the early 1960s
helped guide the development of the laser and propel the dizzying increase
in the speed of fiber-optic communication, died on Dec. 27 in Snowbird, Utah
. He was 81.
Family photo
Some of the work done by Dr. Tingye Li and his colleagues at Bell Labs laid
the groundwork for today’s broadband.
The cause was a heart attack while he was on... 阅读全帖
m********e
发帖数: 1156
19
来自主题: Physics版 - 据说老爱发表了300多篇论文
我还算有知的,无论深度还是广度,奈何世界上的知识太多。
有人贴出老爱的几百篇论文,我一看大多数是德文,不知道,无法判断。
您瞅一眼,看看有多少是真正的科研论文?
1913 Einige Argumente für die Annahme einer molekular Agitation beim
absoluten Nullpunkt Annalen der Physik(ser. 4), 40, 551–560, link
Some Arguments for the Assumption of Molecular Agitation at Absolute
Zero
1913 Déduction thermodynamique de la loi de l'équivalence
photochimique Journal de physique (ser. 5), 3, 277–282
Thermodynamic Deduction of the Law of Photoche... 阅读全帖
s***e
发帖数: 911
20
来自主题: Science版 - Optics Letters,24, p. 25-27(1999)
Superluminal terahertz pulses
Klaas Wynne and Dino A. Jaroszynski
In femtosecond terahertz-pulse (T-ray) imaging of metal structures with
dimensions of the order of the wavelength, it is observed that the T rays
propagate faster than the vacuum speed of light. In the case of apertures
this can be understood as a waveguide effect in which superluminal velocities
are expected close to the cutoff frequency. However, the effect is also
observed close to knife edges and in propagation past thin metal
s**e
发帖数: 103
21

QM is consistant because it claims nothing is physical until you measure
it. when you measure A, you can predict what you will get if you measure
B. But, until you measure B, nothing is physical about the spin of B. So
physical signal propagation is defined by the informational gained by
measurement of A and B. Unless when A is measured, the person that is going
to measure B instantly know the result of measurement, no physical signal is
propagating faster than light.
This is the wieldest thing
c********s
发帖数: 123
22
来自主题: Science版 - Re: 求教相速度和群速度
your definition is confusing to me as well. hehe
When Vg is not the speed of energy propagation speed? Any example?
A physical definition in this case is not very strict, I agree. But it
provides an easy insight into the two quantities. Mathematically, you have
given very good explanation plus hanzo's definition. To me, I understand it
this way:
suppose you have a wave packet: f(x, t) propagates from f(x=0, t=0)
the phase speed of a monochromatic component is obtained through Fourier Tran.
that
f*******d
发帖数: 339
23
来自主题: Science版 - from Wang et. al.
The observed superluminal light pulse propagation is not at odds with causality,
being a direct consequence of classical interference between its different frequency components in an
anomalous dispersion region.
...
Finally, we note that the observed superluminal light pulse propagation is not at odds with causality or
special relativity. In fact, the very existence of the lossless anomalous dispersion region given in
equation (1) is a result of the Kramers-Kronig relation which itself is based
l*****a
发帖数: 38403
24
发信人: arsablue (真神), 信区: Belief
标  题: 你的腦袋如何創造神 (new scientist)
发信站: BBS 未名空间站 (Fri Feb  6 08:41:15 2009)
說到科學研究信鬼神是怎麼回事, 剛出來的 New Scientist 就有這樣一篇,
大家看看。
http://www.newscientist.com/article/mg20126941.700-born-believe
Born believers: How your brain creates God
WHILE many institutions collapsed during the Great Depression that began in
1929, one kind did rather well. During this leanest of times, the strictest,
most authoritarian churches saw a surge in attendance.
This anomaly was docu... 阅读全帖
m****s
发帖数: 18160
25
☆─────────────────────────────────────☆
leonana (leonany) 于 (Fri Jun 17 01:41:49 2011, 美东) 提到:
投诉人(ID):
Leonana
投诉对象及职务(限版主):
Jesus版主dignity
投诉标题:
滥用权力打击异己
投诉目标(更改处理决定/更改板规/弹劾板主...):
更改处理决定/更改板规/弹劾板主
投诉理由及证据:
基督徒Id Huo转帖刷屏每天高达近20首贴,阻碍版面正常交流数日,版主对版友这些天
公开的
质疑照常装聋作哑,并在被网友质疑前每篇刷贴mark奖励, 另外严重怀疑此人即为id为libajia的马甲,具体请参考
赏罚记录
22 Dignity SEEKETERNAL 2011-06-15 01:58:09 10.00(伪币) [浏览]
23 Dignity SEEKETERNAL 2011-06-15 01:58:09 10.00(伪币) [浏览]
24 Dignity SEEKETERNAL 2011-06-15 01:58:09 10.00(伪币) [浏览]
2... 阅读全帖
f**d
发帖数: 768
26
来自主题: Neuroscience版 - 推荐:Axon Physiology---Physiol. Rev,2011
这个领域的最新进展,一篇很好的REVIEW,刚刚发表出来的
作者D.Debanne最近发表了不少这个方向的REVIEW文章
http://physrev.physiology.org/content/91/2/555.full
Axon Physiology
Dominique Debanne, Emilie Campanac, Andrzej Bialowas, Edmond Carlier,
and Gisèle Alcaraz
Institut National de la Santé et de la Recherche Médicale U.641 and
Université de la Méditerranée, Faculté de Médecine Secteur Nord,
Marseille, France
Next SectionAbstract
Axons are generally considered as reliable transmission cables in
which stable propagation occurs once an act... 阅读全帖
w***g
发帖数: 5958
27
来自主题: DataSciences版 - Neural Network面试的时候会怎么问啊?
1. gradient越propagate越小怎么办?
2. gradient越propagate误差积累越多怎么办?
我随便问问,都是实际应用中立刻会碰到的问题。

chain
h**********i
发帖数: 183
28
A Facebook account named“EnverEnver Karakas” recently reported that
Abudukadir Yapuquan(阿不都卡德尔•亚甫泉),a leader of the East
Turkestan Islamic Movement (ETIM) terrorist organization, was detained by
Turkish police on the 31st of August. According to the released information,
Abudukadir Yapuquan was arrested in Turkey under the pressure of the
Chinese government.
The "East Turkestan" forces outside of China reacted strongly to the
detainment of Yapuquan, threatening to take “immediate action” t... 阅读全帖
c**i
发帖数: 6973
29
来自主题: History版 - 中国古时候就有冰淇淋了?
You are propagating lies. Do you have any evidence to supoort what you say
here? None!
Mr. Marco Polo's account is preserved. Check if you can find anything about
ice cream.
Chinese did not drink cow milk, except those in Mongolia and Tibet.
h*i
发帖数: 3446
30
来自主题: History版 - 1434
《1434》
有人看了么?
前两页:
One thing that greatly puzzled me when writing 1421 was the
lack of curiosity among many professional historians.
After all, Christopher Columbus supposedly discovered
America in 1492. Yet eighteen years before he set sail, Columbus had a
map of the Americas, which he later acknowledged in his logs. Indeed,
even before his first voyage, Columbus signed a contract with the king
and queen of Spain that appointed him viceroy of the Americas. His
fellow ship’s captain Martín Alons... 阅读全帖
p********r
发帖数: 47
31
【 以下文字转载自 RisingChina 讨论区 】
发信人: Propagator ((家)), 信区: RisingChina
标 题: popular blog by a Tibetan writer in Beijing
发信站: BBS 未名空间站 (Wed May 7 14:46:57 2008), 站内
http://woeser.middle-way.net/
s****n
发帖数: 4902
32
人民币币值根本不是问题。米犹的政治洗脑炮筒--扭腰施暴看到硬的不行,就来捎捎
老共的脚痒:
The Problem Is Not China
http://www.nytimes.com/2010/03/20/opinion/20iht-edpor.html
The Myths About China's Currency
Though returning to a more flexible and appreciating currency is in China’s
interest, dangerous myths about China’s economy, and the benefits to the U
.S. of a more expensive renminbi, are again being propagated, feeding China
bashers and protectionist lobbies while endangering a crucial relationship
http://www.nytimes.com/2010/03/20/o
s******r
发帖数: 5309
33
来自主题: Military版 - 孔子学院是什么东西
Members of the Swedish parliament expressed concerns that the Institute
provides a platform for the Chinese
government.[6] A declassified intelligence report by the Canadian Security
Intelligence Service says, "Beijing is
out to win the world's hearts and minds, not just its economic markets, as a
means of cementing power."[7]
The Government of India rejected the idea of Confucius Institutes in schools
, and called them "a Chinese
design to spread its soft power – widening influence by using cul... 阅读全帖
t****l
发帖数: 454
34
just goole, at least three times:
http://womenincongress.house.gov/member-profiles/profile.html?intID=202
here is the link:
"When Rankin decided in 1916 to run for a House seat from Montana, she had
two key advantages: her reputation as a suffragist and her politically well-
connected brother, Wellington, who financed her campaign. Some national
woman suffrage leaders feared she would lose and hurt the cause. The novelty
of a woman running for Congress, however, helped Rankin secure a GOP
nomina... 阅读全帖
w*********s
发帖数: 2136
35
Jeffry John Aufderheide
vactruth.com
05/25/2010
http://vactruth.com/2010/05/25/vaccines-rockefeller-social-control/
PART I.
History books proclaim with absolute certainty that the pinnacle of public
health is defined by the polio vaccine program. Disease finally conquered by
science. The polio effort was a benchmark for the public to mentally accept
the concept “shots prevent disease.” However, hidden to most Americans
was an elaborate Public Relations scheme being carefully applied by
Rockefell... 阅读全帖
C********n
发帖数: 6682
36
来自主题: Military版 - 朱学勤抄袭的证据 --- 5
7.21朱学勤惊天抄袭证据(一):小女子点朱学勤的死穴
7.23朱学勤惊天抄袭证据(二):第七章第五节
7.25最新朱学勤惊天抄袭证据(三):第八章第一节
小女子

这是小女子考证的朱学勤先生的第三个章节,《道德理想国的覆灭》第八
章第一节(共8页,276页至283页)。结果与上两次考证(分别为第八章第五节——共5
页,298-302页;第七章第五节——共8页,266-273页)完全相同,这三节都来自Blum
一书。本节除了两段,所有内容出现在Blum一书。小女子本乃幽默之人(看本人的第一
篇就知道了),可是,面对这样严峻得不能再严峻的事实,已经幽默不起来鸟。
仅以小女子的这三篇考证,朱学勤抄袭一事,到此可以铁板钉钉了。这还不
包括Isaiah和邢玉思两位大哥的指控。网上有朱粉这样辩解:“像这类外国历史的出处
一般都不是原创,而是分别收集自各种不同的外文原文资料或者国内各种翻译过来的有
关资料。但又是根据各种资料结合个人的观点进行取舍的,所以很难说谁抄谁,或者,
因为作者将各种资料揉和得很好,因而有效地表达了自己的观点,应该就不... 阅读全帖
c**i
发帖数: 6973
37
BBC Chinese, Mar 25, 2011.
http://www.bbc.co.uk/zhongwen/simp
/world/2011/03/110325_curry_detects.shtml
, which is translated from
Jason Palmer, Curry powder molecule 'is cheap sensor for explosives.' BBC,
Mar 24, 2011.
http://www.bbc.co.uk/news/science-environment-12849781
Note: turmeric
http://en.wikipedia.org/wiki/Turmeric
(Curcuma longa; of the ginger family, propagated from root; native to
tropical South Asia; roots are boiled for several hours and then dried in
hot ovens, after which they ... 阅读全帖
o****g
发帖数: 657
38
来自主题: Military版 - 旗帜鲜明的支持外嫁
我总觉得没准千年之后的人类就木有种族的区别了,全部都是棕色人种……
所以以后拍star trek之类的电影要全部演员都涂成浅棕色,以表示全部人类由于许多
代的interracial propagation,颜色都混成一种了。呵呵。
那时候才世界大同呢……
y****i
发帖数: 2194
39
中宣部有没有这么厚脸皮 有没有这气魄?有没有?!
http://www.cnn.com/2011/WORLD/meast/04/14/syria.iran.us/index.h
Washington (CNN) -- The U.S. State Department accuses Iran of helping the
Syrian government's efforts to suppress protests that have taken place there
in recent weeks.
"We believe that there is credible information that Iran is assisting Syria"
in quelling the protesters, department spokesman Mark Toner said Thursday.
U.S. officials said the Iranian assistance includes gear used to suppress
crowds, as well a... 阅读全帖
w***h
发帖数: 3343
40
http://www.ucsdguardian.org/news/chem-prof.apologizes-for-websi
在那个投票网站上。大家必须团结起来,不板倒这个白教授,我们真对不起这个共匪帽子。
可笑的是,他们还把我们这个论坛污蔑为纳粹性质的论坛。
Matt says:
May 26, 2011 at 9:20 pm
I was told by my co-worker that thousands of Chinese students and scholars
were co-ordinated by a Chinese-
consulate-controlled online bulletin board to harass the poor chemistry
professor, hoping to
force the school to fire the poor guy.
I am extremely upset about the fact that foreign agency trying to exert
influence in our socie... 阅读全帖
b*****8
发帖数: 201
41

http://www.ucsdguardian.org/news/chem-prof.apologizes-for-websi
在那个投票网站上。大家必须团结起来,不板倒这个白教授,我们真对不起这个共匪帽
子。
可笑的是,他们还把我们这个论坛污蔑为纳粹性质的论坛。
Matt says:
May 26, 2011 at 9:20 pm
I was told by my co-worker that thousands of Chinese students and scholars
were co-ordinated by a Chinese-
consulate-controlled online bulletin board to harass the poor chemistry
professor, hoping to
force the school to fire the poor guy.
I am extremely upset about the fact that foreign agency trying to exert
influence in our ... 阅读全帖
L***6
发帖数: 8307
42
lz一看就是物理盲,我靠Feynman费大爷不比老杨牛几个数量级?Feynman diagram,
path integral,propagator,rules for qed qcd。。。。。QED基本就是他建立的吧
?老杨主要是攻弱相互作用,攻出了一些比较重要的东西。比如他看到别人做出来QED
是基于U1 symmetry,他就仿照着,对weak interaction搞个SU2 symmetry,然后成功
了,是个大的突破。然后就是发现弱相互作用下,parity可能不守恒,因为没有实验证
明过守恒,就像对着镜子走,镜子里的人妈的不跟你一起走,违法了宇宙中基本的定律
,后来让Wu女士做个Co60低温下beta衰变的实验,我靠还真不守恒,震动了世界,就拿
个炸药奖,感觉这个奖跟Lee其实没什么关系,Lee感觉至少没有在高能这块做出什么东
西,没有在教科书上留名,好像在统计力学上也没有留名,感觉这个炸药奖多半是老杨
的,所以他俩后来闹僵了,主要是Lee的责任。但话说回来,老杨确实是华裔里面最最
牛逼的科学家,不仅仅是最牛逼的物理学家,因为他在物理最核心的最牛逼的一块,就
是理论高能粒子... 阅读全帖
m**********n
发帖数: 27535
43
"The crust is different in the east than in the west," United States
Geological Survey (USGS) earthquake geologist David Schwartz told
LiveScience. "It's older and colder and denser, and as a result, seismic
waves travel much farther in the east than in the west."
Additionally, said Andy Frassetto of the Incorporated Research Institutions
for Seismology, the sediments along the east coast can make quakes feel
stronger.
"The sediments of the coastal plain along the eastern seaboard can trap
waves... 阅读全帖
x****u
发帖数: 12955
44

Anybody who feels affinity for colonial master is most certainly NOT worthy
of been called inheritant of true Chinese culture. It's the worst part of
what was passed off as "Chinese culture", propagated by the slave masters of
Yuan and Qing dynasty and their Han lap dogs.
A***C
发帖数: 143
45
先介绍一下我的身份,理想主义者,老将,业余评论员。
本文想探讨的是如何构建比美国式民主更好的,更适合中国的民主。我称
这样的民主为民主2.0.
美国本身其实也需要考虑更先进的民主,但本人最关心的是中国未来的民主本身。
本文只讨论中国。
1 什么是民主2.0?
跟台湾不一样,中国大陆没有出现大规模的党外运动。向艾未未,刘晓波等既热情
又愿意坐牢的人少之又少。很奇怪,在大陆连法律界和一般社会民众对这些党外
运动也出奇的冷漠。一方面是因为中共对媒体的控制比国民党优良,另一方面我个人
觉得是因为中国的党外运动没有着力点,或者说,没有一个被普遍认同的诉求。
6.4事件中有大量的热衷政治改革的人被牺牲掉了,但到了二十多年后的今天,已经
没多少人为他们讲话了。为什么?是人们太冷漠了吗?凭良心讲,有谁会反对他们
当年的诉求呢?我想很多人其实只是反对他们的抗争方式而已,但对他们的抗争诉求
应该是认同的。那为何对他们的牺牲如此无动于衷,甚至冷嘲热讽呢?我记得有个人
做过一个比喻,说一个人的妹妹要被别人强奸了,于是那个人就对强奸犯说,放开
我妹妹,不然先杀了我。结果那个人被杀了,他妹妹被强奸了。也许我们对那... 阅读全帖
a********k
发帖数: 32
46
【紧急投票动员】改写亚裔孩子要比非裔SAT高450分才能入名校的现实
决战最高法院, 请投庄严一票,来捍卫你孩子公平竞争入学名校的机会
请置顶,请在以下网页签名,请转发!
http://admin.80-20nj.info/cgi/80/e?l=8/11e/f&w=no
-----------------
历史性的时刻已经到来了:2/21/2012,美国最高法院决定审理用“族裔”的理由来提
高亚裔和白人高校入学门槛的做法是否违宪。您--关爱孩子未来的父母--现在就可以花
一分钟时间来帮助孩子增大孩子上他们理想大学的机会。请您立即投票赞成(FOR) 80
-20全美亚裔教育基金会的民调书,清楚明白地表明亚裔在这件案子上的立场。
资料显示,亚裔在美国要比其他族裔成绩优秀许多才能上同样的学校。要上同样的名校
,亚裔SAT要考1550分,白人1410分,而非裔只需要1100分*(英文和数学满分是1600)
。亚裔入学这么高的门槛使得许多亚裔的大学申请者非常害怕,有些干脆拒绝列出他们
是亚裔—其实学校一看名字还是能知道哪些孩子是亚裔。。。
下面几周内,我们需要征集到至少五万个签名,让结果写入Am... 阅读全帖
b****A
发帖数: 917
47
【 以下文字转载自 Immigration 讨论区 】
发信人: summercat (夏天的懒猫), 信区: Immigration
标 题: 【紧急投票】改写亚裔孩子要比非裔SAT高450分才能入名校的现实 (转载)
发信站: BBS 未名空间站 (Tue Feb 28 14:02:34 2012, 美东)
发信人: summercat (夏天的懒猫), 信区: NextGeneration
标 题: 【紧急投票】改写亚裔孩子要比非裔SAT高450分才能入名校的现实
发信站: BBS 未名空间站 (Tue Feb 28 14:01:24 2012, 美东)
请您立即投票赞成(FOR) 80-20全美亚裔教育基金会的民调书
请置顶,请在以下网页签名,请转发!
http://admin.80-20nj.info/cgi/80/e?l=8/11e/f&w=no
发信人: alderbrook (Alderbrook), 信区: Parenting
标 题: 【紧急投票】改写亚裔孩子要比非裔SAT高450分才能入名校的现实
发信站: BBS 未名空间站 (Tue Feb 28 01:... 阅读全帖
t***s
发帖数: 300
48
【 以下文字转载自 Parenting 讨论区 】
发信人: alderbrook (Alderbrook), 信区: Parenting
标 题: 【请置顶 紧急投票】改写亚裔孩子要比非裔SAT高450分才能入名校的现实
发信站: BBS 未名空间站 (Tue Feb 28 01:38:53 2012, 美东)
【紧急投票动员】改写亚裔孩子要比非裔SAT高450分才能入名校的现实
决战最高法院, 请投庄严一票,来捍卫你孩子公平竞争入学名校的机会
请置顶,请在以下网页签名,请转发!
http://admin.80-20nj.info/cgi/80/e?l=8/11e/f&w=no
-----------------
历史性的时刻已经到来了:2/21/2012,美国最高法院决定审理用“族裔”的理由来提
高亚裔和白人高校入学门槛的做法是否违宪。您--关爱孩子未来的父母--现在就可以花
一分钟时间来帮助孩子增大孩子上他们理想大学的机会。请您立即投票赞成(FOR) 80
-20全美亚裔教育基金会的民调书,清楚明白地表明亚裔在这件案子上的立场。
资料显示,亚裔在美国要比其他族裔成绩优秀许多才能... 阅读全帖
r*c
发帖数: 85
49
今天mailing list收到的。两个月的deadline,已经过去10天了,怎么都没看到人讨论
这个。写得这么好的文案,不广为传播真是浪费了
小声说一句,潜水员求置顶。。。
(以下为转载)
历史性的时刻已经到来了:2/21/2012,美国最高法院决定审理用“族裔”的理由来提
高亚裔和白人高校入学门槛的做法是否违宪。您--关爱孩子未来的父母--现在就可以花
一分钟时间来帮助孩子增大孩子上他们理想大学的机会。请您立即投票赞成(FOR) 80
-20全美亚裔教育基金会的民调书,清楚明白地表明亚裔在这件案子上的立场。
http://admin.80-20nj.info/cgi/80/e?l=8/11e/f&w=no
资料显示,亚裔在美国要比其他族裔成绩优秀许多才能上同样的学校。要上同样的名校
,亚裔SAT要考1550分,白人1410分,而非裔只需要1100分*(英文和数学满分是1600)
。亚裔入学这么高的门槛使得许多亚裔的大学申请者非常害怕,有些干脆拒绝列出他们
是亚裔—其实学校一看名字还是能知道哪些孩子是亚裔。。。
下面几周内,我们需要征集到至少五万个签名,让结果写入Amicus Cu... 阅读全帖
a***8
发帖数: 2433
50
http://admin.80-20nj.info/cgi/80/e?l=8/11e/f&w=no
紧急动员:决战最高法院, 请投庄严一票
捍卫你孩子公平竞争入学名校的机会
历史性的时刻已经到来了:2/21/2012, 美国最高法院决定审理用"族裔" 的理由来提
高亚裔和白人高校入学门槛的做法是否违宪。您--关爱
孩子未来的父母--现在就可以花一分钟时间来帮助孩子增大孩子上 他们理想大学的机
会。请您立即投票赞成(FOR) 80-20全
美亚裔教育基金会的民调书, 清楚明白地表明亚裔在这件案子上的立场。
http://admin.80-20nj.info/cgi/ 80/e?l=8/11e/f&w=no
资料显示, 亚裔在美国要比其他族裔成绩优秀许多才能上同样的学校。 要上同样的名
校,亚裔SAT要考1550分,白人1410分,
而非裔只需要1100分*(英文和数学满分是1600)。 亚裔入学这么高的门槛使得许多亚
裔的大学申请者非常害怕,
有些干脆拒绝列出他们是亚裔--其实学校一看名字还是能知道哪些孩 子是亚裔。。。
下面几周内,我们需要征集到至少五万个签名,让结果写入Amic us... 阅读全帖
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