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b**s
发帖数: 589 | 2 Another distinguishing tool is based on the presence of single-mode or
bimodal molecular weight distributions. A block copolymer representing a
single chemical species should display essentially single-mode behavior. By
contrast, homopolymer blends are more likely to exhibit bimodal
characteristics. One of the better ways to investigate this phenomenon is
density gradient ultracentrifugation. Assuming the two components possess
different densities, a bimodal distribution will be detected in t |
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p*a
发帖数: 7676 | 5 柴总指挥29年前就说了原因; 百姓冷漠，需要鲜血才能唤醒。 |
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w*********r
发帖数: 42116 | 7 一个老将说晓波不在广场，一个老将不认晓波是老将，还有一个老将说老将没资格品论
晓波。怕是意见不太统一。 |
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m******1
发帖数: 19713 | 9 Survey: Gays Gaining Global Acceptance
By Advocate.com Editors
GLOBE X390 (ISTOCKPHOTO) | ADVOCATE.COM
An international study shows that most countries have become more accepting
of LGBT people over the last two decades, but the reverse trend is evident
in former socialist countries.
The study finds that "overwhelmingly, societies have become more accepting
of homosexual behavior." In the study of 31 countries, most showed an
increase in favorable public opinion, with the Netherlands, Denmark, N... 阅读全帖 |
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l****z
发帖数: 29846 | 10 October 3, 2012 Posted by DJ Drummond
Imagine I took a poll of delegates at the 2012 GOP National Convention. Let
’s say I made sure the gender, race, age, education, and other demographics
apart from party affiliation were carefully matched to voter norms. Would
you be happy with such a poll?
If you are a Republican, maybe, but obviously not if you are a Democrat. A
lot of folks would be quick to point out that Mitt Romney would pretty much
crush Barack Obama in such a poll. The flip side ... 阅读全帖 |
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p*******o
发帖数: 6791 | 11 这个玩意儿嘛，看关系铁就买个贵点的。泛泛之交嘛，中庸之道，咱不出风头买最贵的
，也不垫底买最便宜的。如果是 bimodal distribution 的话，就按上面那个仁兄说的
，最便宜的买个2~3件 |
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p*****m
发帖数: 7030 | 12 你有没有听过一句话？一共就两个女数学家，一个不是女的，一个不是数学家。。hoho
比较搞
我觉得生物学家里面女的的风格也有点bimodal distribution,要么强悍的让人可以忽
略掉她们的性别，要么很温婉很女人 |
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g*********5
发帖数: 2533 | 13 Introduction:
Cells that simultaneously secrete and sense the same signaling molecule are
ubiquitous. Bacteria sense a quorum by secreting and sensing an autoinducer;
T cells induce a monoclonal
immune response by secreting and sensing a cytokine; and epithelial cells
can become cancerous through misregulated secreting and sensing of a growth
factor. Many of these cells use the same core signaling-circuit motif to
realize a diverse repertoire of biological functions. The full range of
functions ... 阅读全帖 |
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s*********n
发帖数: 68 | 14 Bimodal polyethylene products from UNIPOLTM single gas phase reactor using
engineered catalysts
Han-Tai Liu, Chris R. Davey, Pradeep P. Shirodkar
Article first published online: 3 JUL 2003
DOI: 10.1002/masy.200390140
s*********[email protected]
Thanks a lot! |
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a**r
发帖数: 224 | 15 Title: Bimodal porous carbon as a negative electrode material for lithium-
ion capacitors
Author(s): Woo, SW; Dokko, K; Nakano, H, et al.
Source: ELECTROCHEMISTRY Volume: 75 Pages: 635-640 Published: 2007
http://journal.electrochem.jp/en-e/linkdl.html?v=75&no=8&p=635
Title: A (LiFePO4–AC)/Li4Ti5O12 Hybrid Battery Capacitor
Author(s): Hu, X; Huai, Y; Lin, Z, et al.
Source: JOURNAL OF THE ELECTROCHEMICAL SOCIETY Volume: 154 Pages: A1026-
A1030 Published: 2007
http://scitation.aip.org/g... 阅读全帖 |
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p*******r
发帖数: 145 | 16 http://abajournal.com/news/paychecks_rose_to_a_median_of_108k_f
Paychecks Rose to a Median of $108K for 2007 Law Grads in Law Firms
Posted Jul 28, 2008, 09:03 am CDT
By Debra Cassens Weiss
Median pay for 2007 law grads who went into private practice has surpassed
the $100,000 mark, but salaries for their counterparts in other legal jobs
still pale in comparison.
The median annual salary for new law grads in private practice was $108,500,
a jump of $13,000 over 2006, according to new survey resul... 阅读全帖 |
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e******5
发帖数: 1334 | 17 Salaries for first-year lawyers seem to congregate in two camps: those who
earn about $45,000 to $65,000 a year (representing about 34 percent of
reported salaries), and those who earn about $160,000 a year (representing
about 25 percent of reported salaries). Very few newly minted lawyers
actually receive “average” or even median pay.
Besides producing a nifty statistical illusion, this bimodal pay structure,
and the very stark choice it requires law students to make early in their
career, has |
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w***o
发帖数: 3830 | 18 bimodal?
very common in zirconocene system, actually |
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H*******e
发帖数: 726 | 19 I am not a math major. But the relationship Pr{X
true if both X and Y are Gaussian. I believe it is not true in general. What
about finding a counter example using a bimodal distribution? |
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e****0
发帖数: 678 | 20 Endometrial hyperplasia types. Risk of cancer treatment
simple 1% Cyclic progestin
complex 3% Cyclic progestin
Simple atypical 8% THA or progestins
Complex atypical 29% THA or progestins
• Prolatinoma and hypothyroidism galactorrhea
• Anesthesia can reduce uterine activity if in the latent phase
• Contraceptive for lactating mother
Progestin-only oral contraceptive
• Pregnancy luteoma
African-ameri... 阅读全帖 |
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g*****y
发帖数: 6325 | 21 这么样验证一组数据的 distribution 是bimodal呢？如果是，怎么计算出2个peak呢？ |
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f*******i
发帖数: 8492 | 22 我用的是SAS 9.2，参照网上的例子，使用同样的命令行来运行不同的数据，但是输出结果的项目名称
和数量却完全不一样。
人家的输出结果,在“Centroid Hierarchical Cluster Analysis”下有如下几个项目
Variable，Mean，Std，Dev，Skewness，Kurtosis，Bimodality。
而我的输出结果，却只有如下四个项目Eigenvalue，Difference，Proportion，Cumulative。
在“Cluster History”， 人家有NCL，Clusters Joined，FREQ，STD，SPRSQ，RSQ和Dist。
而我的输出结果却只有NCL， cluster joined，FREQ, Norm cent dist,tie。
请问，这是怎么回事啊？ 命令明明是一样的。
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n******7
发帖数: 12463 | 23 再次感谢。其实一开始我也是这么想的 （不过我直接得到这个pdf关系，不知道是不是
不严谨）这其实就是一个两个beta distribution 的 mixture distribution
后来我觉得这个模型不符合这个问题
我主贴用比较容易理解的binomial distribution也是想说明这个区别
我们把beta distribution看做probability的distribution的话，按照这个mixture的
模型，混就是从不同distribution来的probability，或者说set of trails。但是我们
直接混的是trail本身。我认为是不一样的
举个极端的例子，红药丸合格率服从beta（1000,1），几乎全部合格，蓝药丸合格率服
从beta（1,1000），几乎全部不合格。等比混合之后，我们可以预期混合组的合格率为
一峰值在0.5左右的分布，大概是beta（500,500）这样子的
而按照mixture distribution的模型，这会是一个bimodal的分布，两个峰分别在0和1
附近... |
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