h*******r
发帖数: 909 | 1 大一统好不好，秦始皇有功有罪？这些都是具体的判断，而判断是否准确，完全取决于具
体的标准。结论的复杂，其实体现着判断标准的复杂。特别是社会问题，牵涉到的利益复
杂，无法得到统一一致的结论，几乎是必然的，是真实的！
就大一统而言，大一统减少地理，文化，族群等等之间的差异，提高一致性homogeneity
，从而导致交通，文化传播，经济物流流动的顺畅，就当时当地而言，当然有好处，但是
，这个homogeneity的一个特点，就是抑制heterogeneity, 就是异质性，也就是压抑个性
，压抑创新，从而不利于发展。解决的方法，就是求同存异，在大一统的同时，如果能够
做到对异端的尊重，提供一个自由的思想环境，那么，就能最大程度地实现大一统的优点
而避免其缺点。事实上，中国的历史就没有能够做到这点。就历史而言，中国的历史相对
稳定，中国人在这相对稳定的历史上享受了相对富足的生活，建立的相当根深蒂固的文化
传统，中国人作为一个族群有了相当程度的自我认同和向心力，以这些为判断标准，大一
统当然是好的，秦始皇当然是功臣。
但是，从发展的角度来看，这些稳定的历史，富足的生活，是以在相当程度上放弃发展 |
|
w******e
发帖数: 1187 | 2 土人第一次做，全盘follow trizol的protocol。为省reagent用了100mg tissue
per ml trizol。发现以下问题，请达人指点：
1. chloroform extraction后的precipitation，为什么用isopropanol？室温
incubate也让我很困惑。。。
2. 做了两次，第一次是heart，拿到RNA很顺利，测OD时发现：260 peak偏向270；
230附近有极高的峰。看来chloroform和precipitate后wash的步骤都不太effective？
3. 第二次做liver，搞到巨多RNA，很oily，dry了之后pellet死活不溶，试了
60oC加热，加大volume，最后还是有很多不溶。是不是trizol用少了？
4. 用了hand held homogenizer和pestle+mortar两种tissue homogenization
methods，run了urea agarose gel（顺便请问大家都用什么denaturing gel），
18S:28S rRNA大约1：1，很困惑degra |
|
z*t
发帖数: 863 | 3 效果咋样？花销大不？
我觉得现在急于bisulfite的甲基化测定虽是最solid的办法，但总归是针对群体的，而
即使被普遍认为homogenous的系统如cell line也会存在一定程度的heterogenety，（
比如细胞周期，细胞对特定药物的敏感度）,即使epigenetics研究的就是population
heterogenety但现有手段几乎不可能得到pure homogenous sample，可能最终还是要看
single cell level的epigenetic state
methylation |
|
s******e
发帖数: 370 | 4 好像说到快速genotyping上来了
我们现在基本可以在2个小时做出genotyping，有一种enzyme可以15分钟digest tissue
，然后用Kappa的fast PCR，30分钟作用完成PCR，再跑gel15分钟，不知道楼主敢不敢
等2小时再提RNA？
还有homogenizer最小的体积我用过1ml的，也许还有更小的尺寸。话说看tissue在homogenizer里面被粉碎是件很过瘾
的事…… |
|
s*********t
发帖数: 600 | 5 透析和直接稀释区别何在？文献上都是透析。
比如抽提细胞系的细胞质和核蛋白纯化complex，我一直是这么做的：
harvest 细胞。加5倍细胞pellet体积的低盐溶液（20mM KCl），冰上放10分钟，用
homogenizer捣12次（用tight的B型活塞），3500 rpm离心10min，上清取出，加0.11倍
体积的1.4M KCl，使得终浓度成100mM，我看文献上说要10万g离心若干小时。可是我们这没有这
样的离心机。只能最大速度（5万G）离心1h，作为细胞质抽提物
S100，分装后液氮速冻，-80保存。这一步很难，因为不管离心多久，都有脂状物质悬浮着，得到的
是浑浊的东西。
对于pellet，加两倍体积的420mM KCl。用homogenizer捣若干下，把鼻涕状黏糊糊的东
西充分散开。然后4度摇30min-1h。然后1万2千g离心30min，分装后液氮速冻，再放-80
，作为nuclear extract。
不知道液氮速冻这一步对于防止蛋白变性有好处，还是别的原因？为何需要速冻？
如果用于蛋白复合物的纯化，我以前是用300mM的盐。但是boss让我改成250mM... 阅读全帖 |
|
M*****e
发帖数: 279 | 6 我的办法可能能帮你解决问题.
我曾经试过多种办法提没有降解（用Bio-Rad or Agilent Bioanalyzer测integrity or
quality (RNA Integrity Number (RIN) by Agilent or RNA Quality Index (RQI)
by Bio-Rad)，不是仅仅用Nanodrop测RNA integrity or quality）的total RNA，然后
做microarray．
1.液氮研磨：RNA quality好，可以做microarray，但是麻烦和太慢（原因你应该知道
）。
２. Glass tissue homogenizer: it didn't work for me to grind tissue in
Trizol in ice bucket with ice, although my tissue was thin and tiny.
Bioanalyzer showed RNA degradation.It's also low through-put.
3. Hand-held electr... 阅读全帖 |
|
j*****y
发帖数: 121 | 7 Novo Nordisk R&D Center China
Mini-pilot – Senior/Principal Scientist in DSP
Zhongguancun Life Science Park, Beijing
Novo Nordisk is a focused healthcare company and a world leader in diabetes
care. Novo Nordisk China R&D (NNRCC) is an integrated part of Novo Nordisk R
&D organization. Novo Nordisk wants to conduct pharmaceutical research
activities in China and expand its network to the scientific community. For
this purpose a new position is open for a dedicated and motivated Senior
Scientist/... 阅读全帖 |
|
L****e
发帖数: 499 | 8 我现在要研究一种蛋白质的酶活性，这个蛋白家族的另外一个同源蛋白有一种水解酶活
性，我现在想要研究我这种蛋白是否也有这种酶活性。开始我是直接用转染了蛋白的细
胞 homogenate 加上底物体外反应后做质谱，检测到水解产物，但是因为cell
homogenate 里有太多的各种蛋白了，所以结果没有直接的说服力。现在我想用his tag
来纯化我这种蛋白。
我的问题是我在裂解转染的细胞的时候肯定是不能加蛋白酶抑制剂的，否则纯化的蛋白
就没有活性了，可是纯化有这么多的步骤，经过很长的时间，我如何保证我的蛋白在纯
化过程中不被细胞中的各种蛋白酶降解呢。另外，我用His60 Ni resin 来纯化蛋白，
这个beads 是在ethanol 里，有没有必要在将bead加到细胞裂解液中之前洗掉bead中的
ethanol? washing buffer 中的imidazol 对蛋白活性有影响吗？
还请有蛋白纯化经验的前辈指教一二。多谢了 |
|
j*****y
发帖数: 121 | 9 发信人: jeffsky (半夏决明子), 信区: Pharmaceutical
标 题: 代友发:Scientist in DSP in Novo Nordisk R&D Center China
关键字: 生物制药 工作 回国 求职
发信站: BBS 未名空间站 (Wed Aug 21 19:07:21 2013, 美东)
Novo Nordisk R&D Center China
Mini-pilot – Senior/Principal Scientist in DSP
Zhongguancun Life Science Park, Beijing
Novo Nordisk is a focused healthcare company and a world leader in diabetes
care. Novo Nordisk China R&D (NNRCC) is an integrated part of Novo Nordisk R
&D organization. Novo Nordisk wants to conduct pharmaceutical re... 阅读全帖 |
|
Y**L
发帖数: 397 | 10 You can get different kinds of clays from Clay Minerals Society, the Source
Clays Repository. For very small size of Montmorillonite you need to purify
through dialysis by your own.
The Repository was originally housed at the University of Missouri but moved
to Purdue University (Indiana, USA) in August 2002, where it currently
resides.
The Source Clays Repository contains two types of materials, the Source
Clays and the Special Clays. The Source Clays consist of 8 different
materials (KGa-1b, ... 阅读全帖 |
|
a*****c
发帖数: 3525 | 11 W Kaminsky, H H Britzinger and J A Ewen will possibly be awarded the Prize for
their contribution to the homogeneous catalysis, stereoselectivity, and
mechanism in olefin polymerization. Homogeneous catalysis has made it possible
to study the polymer chain growth and stereo-control mechanism, which was
unclear based upon hetereogeneous Z-N catalysts.
Kaminsky's contribution is in that he prepared MAO, the cocatalyst for olefin
polymerization, which dramatically increases the catalytic activity t |
|
a****n
发帖数: 3082 | 12 来自主题: Macromolecules版 - 制膜求助 现有一POLYMER, 只能溶解在不挥发的溶剂里. 我用SPIN CAST 的方法制THIN FILM. 但
是得到的膜都不是HOMOGENOUS 的. 有什么办法能够得到HOMOGENOUS的呢? SPIN 的时候变
化速度吗? 请有此经验的高手相助, 感激不尽. |
|
t*****t
发帖数: 72 | 13 This is a typical Euler Differential Equation(DE):
you need to first figure out a general solution of the corresponding
homogeneous DE, then plus a particular solution of the non-homo. DE
see: y(x) = yc(x) + yp(x)
1) The general form of a homogeneous Euler DE is:
a*x^2*y" + b*x*y' + c*y = 0
where a,b,c are constants.
Let z = ln(x) , by substitution we can change it to the following DE
with all constant coefficients:
a*y"_z + (b-a)*y'_z + c*y = 0 -------(1)
where y"_z means |
|
e******e
发帖数: 86 | 14 恩多谢。。。。
This is a typical Euler Differential Equation(DE):
you need to first figure out a general solution of the corresponding
homogeneous DE, then plus a particular solution of the non-homo. DE
see: y(x) = yc(x) + yp(x)
1) The generally form of homogeneous Euler DE is:
a*x^2*y" + b*x*y' + c*y = 0
where a,b,c are constants.
Let z = ln(x) , by substitution we can change it to the following DE
with all constant coefficients:
a*y"_z + (b-a)*y'_z + c*y = 0 -------(1)
where y |
|
W**L
发帖数: 137 | 15 Divergent trajectories of flows on homogeneous spaces and Diophantine
approximation.
J. Reine Angew. Math. 359 (1985), 55–89.
By Dani
and its correction
Correction to the paper: "Divergent trajectories of flows on homogeneous
spaces and Diophantine
approximation''.
J. Reine Angew. Math. 360 (1985), 214
email: w*******[email protected]
Many thanks. |
|
L*m
发帖数: 235 | 16 近十年JAMS上的华人作者，JAMS上的文章相对更多，搜的没那么仔细，有可能不完全。
大家也看看有没有漏的
2015
Kähler-Einstein metrics on Fano manifolds. I: Approximation of metrics
with cone singularities
Xiuxiong Chen, Simon Donaldson and Song Sun.
Kähler-Einstein metrics on Fano manifolds. II: Limits with cone angle
less than 2π
Xiuxiong Chen, Simon Donaldson and Song Sun.
Kähler-Einstein metrics on Fano manifolds. III: Limits as cone angle
approaches 2π and completion of the main proof
Xiuxiong Chen, Simon Donaldson... 阅读全帖 |
|
j*****y
发帖数: 121 | 17 Novo Nordisk R&D Center China
Mini-pilot – Senior/Principal Scientist in DSP
Zhongguancun Life Science Park, Beijing
Novo Nordisk is a focused healthcare company and a world leader in diabetes
care. Novo Nordisk China R&D (NNRCC) is an integrated part of Novo Nordisk R
&D organization. Novo Nordisk wants to conduct pharmaceutical research
activities in China and expand its network to the scientific community. For
this purpose a new position is open for a dedicated and motivated Senior
Scientist/... 阅读全帖 |
|
w*******g
发帖数: 99 | 18 I tried matlab and it could not give me the exact solution for homogeneous
equation (But it is the same as in math handbook I have).
Maybe they are equivalent... For the non-homogeneous equation, only implicit
expression is given...
[ T
[ /
[ | 1
[-2 | ---------------------------------- da - t - C2 = 0 ,
[ | 4 1/2
[ / (-2 a c - 8 b log(a) + 4 C1) a
[
T |
|
h*******e
发帖数: 226 | 19 有6组数据做比较，每组的sample size 不是相同的(ie,unbalanced)
想要比较他们的mean是不是不同，做anova 和posthoc
做anova要满足，normal distribution and homogeneity of variance
我要先测试这两个条件满不满足。
我的问题是
1) test normality的时候是对全部六组的数据一起做，还是单独的每一组数据来分别
test
2）homogeneity of variance 是比较这六组的各自的variance是不是相等么？
3）如果我一套数据里针对某一些变量是normal distributed and equal variance ，
但另一些不是，那么我在处理这一套数据的里面是不是要根据满不满足条件而选择
parametric或者nonparametric的方法进行处理？这样做对于一整套数据来说会不会有
问题呢？ |
|
D******n
发帖数: 2836 | 20 what do u mean by homogeneity? If they are homologous, ur features should
pick it up
or u can say homogeneity is defined by the similarity between the feature
vectors of two languages which may or may not overlap with the ones u are
interested in.
in biology ppl build phylogenic trees,
u can do a simple hierachical clustering of the langauges using the
euclidian distanc of the feature vectors.
我没什么统计的基础，在这里请教一个问题。不一定要有现成的答案，各位能指点一下
看什么书也行。
我现在要对一些语言进行分类，原则上有两个方法。一是基于同源特征，就是把那些语
言跟他们共同的祖语进行比较（fe |
|
B******y
发帖数: 9065 | 21 楼主，是Homogeneity of Variance，而非Constant Variance，两者之间有本质的差别
。Homogeneity of Variance的假定是进行ANOVA分析的三大假设之一（另两个为
Independence和Normality）。
不严格的说，ANOVA是用方差的形式来推断Mean是否一致。首先假定组间和组内的方差
是相同的，但利用sum of squares分割和F检验（2个方差的比率），发现实际结果与假
定相违背的很多，于是断定差别是来自于组间的Mean的差异巨大。所以说，在进行
ANOVA之前，三大假定必要都符合才可以继续。 |
|
g******2
发帖数: 234 | 22 It's the stratified sampling in variance reduction. If a function is
homogeneous across all region, then there's not need to do stratified
sampling. If a function is heterogeneous across regions but homogeneous
within sub-regions, you'll gain efficiency by stratified sampling.
For example, if you have 2 regions and each has 5000 machines. Suppose the
defective% for region 1 is 0.1 and 0.3 for region 2. Then in this case
sampling n samples equally from region 1 and region 2 will be more efficient... 阅读全帖 |
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G***s
发帖数: 10030 | 23 在这里想请教一个问题，用repeated measures，Sphericity test被reject了，然后用
multivariate test,书上写的还要查homogeneity or variance和normality这两个
assumption，但是在ucla的tuitor网站说这两个也被violate了，到底要check哪些
assumption？
Repeated measures ANOVA carries the standard set of assumptions associated
with an ordinary analysis of variance, extended to the matrix case:
multivariate normality, homogeneity of covariance matrices, and independence
. Repeated measures ANOVA is robust to violations of the first two
assumptions. Violations of i... 阅读全帖 |
|
l*****e
发帖数: 1431 | 24 前些天做了个腹部CT，里面有这么句话：
On the reconstruction images, I do not have a complete liver on the coronal
image. The maximum diameter measures 17.3 cm, which is enlarged however it
is homogeneous with normal vasculature.
最后的impression是：enlarged liver with normal vascularity and homogeneity。
我的家庭医生看了说，没事。可我总觉得有点不太明白，那句I do not have complete
liver是啥意思，是说CT没做好所以看不全，只有他看到的部分才是好的吗？做CT是因
为腹部疼，做B超的结论是heterogeneous liver with increased echogenecity. |
|
c**i
发帖数: 6973 | 25 Jeffrey Wasserstrom, The Myth of One China; To understand the contradictions
and internal conflicts of Asia's rising superpower, you have to understand
its incredible diversity. Foreign Policy, Apr. 13, 2010.
http://www.foreignpolicy.com/articles/2010/04/13/the_myth_of_one_china
Quote:
"U.S. notions of Chinese homogeneity gained a new lease on life during the
first decades of the Cold War. This was a time when many World War II images
of Japan, as a militaristic land in which everyone conformed |
|
g****t
发帖数: 31659 | 26 【 以下文字转载自 paladin 讨论区 】
发信人: guvest (我爱你老婆Anna), 信区: paladin
标 题: 关于长生不老的形而上学理论
发信站: BBS 未名空间站 (Sun Dec 16 22:27:19 2012, 美东)
今天看了本哲学书,趁着没忘,总结一下.
1.所有知识,都是承认有个独立于时间之外的永恒存在的.
即是说,有个东西不变.
例如物理学,都是假设有个"物理"存在的.如果你觉得,今天的物理规律和昨天的物理规律
不同,那你进一步可以用物理描述这个不同的演化,这就是新的物理规律.
而不是说物理规律会天天变.那其实是等于说不存在"物理"这回事儿.
2.这个有个东西不变的说法,先开始就是一小撮人扯淡扯出来的.
例如Plato,亚里斯多德等等.
[从事实角度来看,这个想法事实上非常实用,你想想,世界现象那么多.
经验事实每天都变化.如果你抓住了一小点不变的东西,再使用演绎逻辑,
就能删繁就简.以少御多.
这就必然能带来巨大生产力的进步.中国古代,其实缺的就是这个信仰.所以没有往
这个方向走.换句话说,这个想法类似平面几何证明里面的辅助线,
有了这个东西... 阅读全帖 |
|
s*r
发帖数: 2757 | 27 http://blogs.discovermagazine.com/gnxp/2010/07/koreans-not-quite-the-purest-race/
the genetics of Korea are of particular interest for social reasons:
South Korea is one of the most ethnically homogeneous societies in the
world with more than 99 per cent of inhabitants having Korean ethnicity…The
Koreans call their ethnic homogeneousity of their society using the word, &
#45800;일민족국가 (Dan-il minjok gook ga,
literally means the single race society.)
Korean r |
|
h****t
发帖数: 632 | 28 re.好不容易发现一个读科耶夫的人，进来交流下。
我觉得你对科耶夫关于资本主义的理解比较到位，即资本主义是人类历史中终结乃是由
于其克服了19世纪的那些问题和马克思所说的“矛盾”，并通过工业和技术在全球任何
地方都征服了自然，创造了极大的财富又能“合理”分配。
不过科耶夫是个很复杂的人，左右派通吃，搞哲学和具体事务都是一流，其早年哲学思
想和晚年反思又大不一样，尤其是他弟子如福山1989年所发挥的民主资本主义代表“历
史终结”思想是否是科耶夫之本意，又很难说。下面仅说几条抛砖引玉。
1. 所谓的profit sharing这种共赢模式，必须是在一个全球普遍同质国家（a
universal &homogenous world state）才能进行，在当今的民族国家林立的体系中，
各国因为其文化种族历史之多元，对“profit”，“消费”及其什么好的生活，即使是
物质方面什么是好的生活都不可能达成一致，对实现他们的方式更不可一致。你有空可
以读一下科耶夫和美国犹裔保守主义大师列奥斯特劳斯的辩论，其中谈到全球资本秩序
通过制造需求和同质化各种异样文明不但是你所说“文明消失”和“对人性伤害”的... 阅读全帖 |
|
m****e
发帖数: 255 | 29 Very interesting theory. But to create a homogeneous world, will there be
world war III? |
|
g****t
发帖数: 31659 | 30 我假设你说的穷人富起来，是指所有人都没有穷富之差，到了super homogeneous状态。
这其实是有路线图的。
主要关键问题是，什么叫活的不错呢？
福利资本主义的神奇之处，就在于“活的不错”其实是The Matrix定义的。
技术残害人性，哲学家都灭掉。
到最后，人除了吃饱穿暖之外，就是通过消费符号来感到满足，感到活得不错。
剩余价值通过符号消费，缴纳给The matrix.进入下一个循环。
你看老虎肉和李奇微，网上抬个杠，能搞好几天,那么enjoy,为什么？
当然，你可以说有人喜欢的是锻炼身体。但这也是个符号问题，
你又不打猎，不种田，身体锻炼其实主要就是符号意义。
属于The matrix的一部分。
就连我们日常穿衣吃饭,一大部分价值甚至绝大部分价值是消费在符号上:例如对品牌的
迷信,对organic food的迷信,等等.
这到最后就是所有人没什么本质区别，The Matrix通过符号控制人类,人人都觉得活得
不错。
作个简单的比方,就是弄个复杂点的bbs,让老虎肉和李奇微吃饱了天天呆在那儿扯淡,他
俩就舒坦了,这两人就共同"活的不错"了.
共产主义式的“按需分配”共同富裕... 阅读全帖 |
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g******1
发帖数: 244 | 31 看这个paper.汉族内部的遗传差异不亚于不同民族。尤其北方人，骂少数民族很可能骂
到自己祖宗头上。
Genomic Dissection of Population Substructure of Han Chinese and Its
Implication in Association Studies
“We have shown in the present study that the Han Chinese population, a
seemingly homogeneous population, is actually complicatedly substructured,
with the main observed clusters roughly corresponding to North-Han (NHC),
Central-Han (CHC), and South-Han (SHC). Our results showed that the greatest
genetic differentiation of Han Chinese is betwee... 阅读全帖 |
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w********l
发帖数: 11447 | 32 小屁猫掐指一算，查个屁dna.
俺们家族那可是homogeneous的族群，dna稳定呢。说出来，吓死你。 |
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f***e
发帖数: 5443 | 33 【 以下文字转载自 ChinaNews 讨论区 】
发信人: cosine (No.1), 信区: ChinaNews
标 题: Our China, Our Tibet, Our blog
发信站: BBS 未名空间站 (Sun Mar 23 02:48:19 2008)
If someone told you before the Tibet incident that the cold war is not over,
you probably would think it's
just a joke.
Hopefully, it's now clear to most Chinese people that was certainly not a
joke. Every word of the statement
has recently been fleshed out by the homogeneous and biased view the whole
western society and its
affiliated media took on what REAL |
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s**********t
发帖数: 2401 | 34 日本虽然也有外籍球员，但是比起天朝，它们是非常homogeneous的 |
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t*******h
发帖数: 2882 | 35 说错了。 Stefan Halper是《北京共识》一书的作者，首倡者是Joshua Cooper Ramo。
西方也有明眼人啊。下面这一位说得太好了！
BailoutNation wrote:
Dear Sir,
The autocratic government/market economy model is nothing new, Japan, S.
Korea, Taiwan and Singapore have all gone through this tried and true model.
In my opinion, for a developing country with a largely homogeneous
population that is upwardly mobile, industrious and not crime prone, this is
a good development model. Get rich first, then democratize. Doing it the
other way around takes way |
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s**********t
发帖数: 2401 | 36 没错，到现在成了homogeneous的净土了。
单一种族在近代化过程中优势巨大 |
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d*********2
发帖数: 48111 | 37 这个悖论是典型的理科生一知半解拿来忽悠人的.
不知道为什么引用率还这么高.
夜晚明亮说第一大前题是宇宙分布homogeneous, 先不讨论这个在宇宙空间的适用度问
题. 光在夜晚明亮假说上就不适用, 在地球与太阳以及其他可见恒星的距离尺度上, 宇
宙就是非均分布, 有的角度上有可见恒星, 有的角度就是没有可见.
无穷大宇宙与无穷多发光体积分下来可以是一个常数, 但是这个常数完全不必要时肉眼
可视强度, 更不必要分布在可见光范围. 而实际上, 观测到的宇宙背景辐射可以认为是
均匀的.
要做宇宙均匀分布假设, 那至少要先画个球体, 以地球为中心, 半径到最远的可视发光
体挖掉以后, 那基本就是宇宙背景辐射.
非静宇宙学说的确立跟这个jw悖论关系不大. 关键还是实测星体光谱红移. |
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d*********2
发帖数: 48111 | 38 而且宇宙homogenous是个很NC的设定.
就好像一个上海长大的人认为全世界人口密度都是一样的.
对于一个无限空间, 均态首先不是必须, 其次在一个过于大/小尺度上的均态,
对于人类可观测的量级是完全没有意义的. 这个不用到宇宙宏观.
光是量子层级的"均态", 人就只能靠"概率"观测到或者观测不到了.
超出尺度范围的均态, 就只能用概率来弥补了.
就这个奥伯斯悖论来说, 在无法知道宇宙均态的量级的前提下, 你就无法确定
需要在某一个角度放一个CCD累计多少时间才能观测到这个所谓的"均态”。 |
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w*******r
发帖数: 7276 | 39 You must be very excited about following news: Look at our students, how
good they are! But to tell you the truth, I don't feel excited. I feel
worried. High scores are not equavelent to innovative spirit. Innovative
spirits come from exploration.
U.S. Teens Lag as China Soars on International Test
By John Hechinger - Dec 7, 2010 9:04 AM PT inShare22More
Business Exchange Buzz up! Digg Print Email Fifteen-year-olds in the U.S.
ranked 25th among peers from 34 countries on a math test and scored i... 阅读全帖 |
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S*****s
发帖数: 7520 | 40 现在青少年犯罪是个社会大问题，谁也别说谁。
但是中国至少是个homogeneous的国家，没有种族问题。
美国是个杂烩，小黑孩，小白孩，小黄孩，等一块长大，不出事才怪 |
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z***c
发帖数: 2959 | 41 "The Party Controls All Aspects of Life in China."
Not anymore. No question, China was a totalitarian state under Mao Zedong's
rule from 1949 until his death in 1976. In those bad old days, ordinary
workers had to ask their supervisors' permission not only to get married,
but to move in with their spouses. Even the precise timing for starting a
family relied on a nod from on high.
Since then, the Chinese Communist Party has recognized that such intensive
interference in people's personal lives i... 阅读全帖 |
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s**********1
发帖数: 305 | 42 A strong evidence is that the genes of homo sapien sapiens, i.e., us,
outside of Africa are only similar to a subpopulation of those in Africa.
This is a very strong support that we are all originally from Africa, not
vice versa. The likelihood that human race evolved first outside of Africa
and maintained relative genetic homogeneity during the evolution, then went
to Africa and gained tons of mutations is minimal. Genetics studies are hard
evidence, other evidence include linguistics and cu... 阅读全帖 |
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m*******o
发帖数: 4236 | 43 居然冒充毛头小伙子，拜托不要给无知的人上课了，继续愚昧下去是他们快乐的保证
这篇COMMENT 是一个化名NanoEngineer在CNN此篇文章下发表的http://www.cnn.com/2011/POLITICS/01/20/china.us.visit/index.html?hpt=T2
Please excuse my spelling and grammar as English is not my first language.
The Art of War, an ancient Chinese military text that's older than Jesus and
has been read by virtually every literate Chinese male in the world,
advises that the most skillful victory is one in where the enemy is defeated
wit... more
Please excuse my spelling and grammar as ... 阅读全帖 |
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S**b
发帖数: 1883 | 44 汉语远比英语清晰而精确。拼音文字带有原始低等文字的特征，就是同一个词一句话根
据说话者年龄身份地位性别的不同而不同。而汉语则是高度进化了的。
拼音文字可能在小学前三年比汉语好学点，以后就倒过来了。可以说英语需要一辈子不
停的学和忘，而汉语中小学学的就足够用一辈子。你看看英语读者文摘上每一期都有像
托福那样的单词测试就知道了举个例子吧，在我教过的中国大一新生中，所有的人都知
道“等腰三角形”是什么，看到一个等腰三角形的图也知道它叫“等腰三角形”，至于
“拼写“ “等腰三角形”这几个字，那能叫问题吗？
可是在我教过的一个破大学的学生里，很多都不知Isosceles triangle为何物（虽然在
小学就学过了），大部分看到一个Isosceles triangle不能呼其为Isosceles triangle
，几乎无人能正确拼写Isosceles。。。讲汉语的学生几乎都知道“垂心”是什么意思
，讲英语的学生把Isosceles，Orthocenter这些单词一律称作Bullshit。
一个统计班上的学生几乎都不知道也读不了 homogeneity这个词，也不想学这个词，一
直到期末考试，很... 阅读全帖 |
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P*K
发帖数: 74 | 45 Rise of the Hans
Why a dominant China could spark tribal warfare.
BY JOEL KOTKIN | JANUARY 17, 2011
http://www.foreignpolicy.com/articles/2011/01/17/rise_of_the_ha
page=0,0
When Chinese President Hu Jintao comes to Washington this week, there
aren't likely to be many surprises: Hu and Barack Obama will probably
keep their conversation to a fairly regulated script, focusing on trade
and North Korea and offering the expected viewpoints on both. But seen
from a different angle, everything in that c... 阅读全帖 |
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S*****s
发帖数: 7520 | 46 谬矣！
鞑靼完全是蛮族。而俄罗斯恰恰最好的保留了中世纪以来最纯正的天主教和东正教的传
统。不但如此，18世纪以来，俄国在文学，绘画，音乐，数学，雕塑，物理，化学，各
方面
的贡献丝毫不逊色老牌的所谓“纯正帝国主义国家”，其创造力之强令人震撼。
美帝的白人，说实话见了毛子只有自卑的份，人家homogeneous啊，美帝大杂烩啊 |
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o**********s
发帖数: 2058 | 47 I agree with what lz said. Jewish culture teaches you how to get the best
out of other people, but Chinese culture teach you how not to hurt other
people. The former is good for surviving in a foreign culture, the latter is
good for sustaining a homogeneous society. |
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Y****a
发帖数: 796 | 48 Wake up libtard.
The population of USA is not homogenous. Blacks are cancer to many
societies, no matter pro-gun or not. |
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r****1
发帖数: 2299 | 49 NEW YORK (AP) -- The teeming streets of Flushing, Queens, can feel like a
different country.
A booming Chinese population exists alongside a longtime Korean enclave. On
a recent afternoon, the sidewalks were jammed with shoppers browsing and
haggling in stores offering everything from iPhones to herbal remedies.
Stalls selling fragrant dumplings and tea shops did a brisk business.
Day trippers from Manhattan or the suburbs often come to eat and shop here
on weekends, savoring the broad array of ... 阅读全帖 |
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w***h
发帖数: 3343 | 50 格蕾丝梦(Grace Meng)，果然都是格蕾丝啊，一个格蕾丝高，一个格蕾丝梦，不愧是华
女精英！
在纽约的华人们，记得这个华女，不要忘记她给大家带来的困扰，不要忘记有机会的话
找点她的麻烦。
Assemblywoman Grace Meng said she's heard many of those complaints. She
started a task force on the issue last year and supports the council
legislation.
"The heart of the issue is not just about an English sign," Meng said. "They
don't feel like they can communicate in their own neighborhoods."
Meng said the bill was part of a wider strategy to encourage interaction
between different groups in her d... 阅读全帖 |
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