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全部话题 - 话题: biases
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i***f
发帖数: 10682
1
来自主题: PhotoGear版 - Kindle DX Graphite 印象和照片
主要是Biased的人太多,让不Biased的无立足之地。就像我再夸5D2扁D700,还是有人
觉得我是C黑。
g****g
发帖数: 1828
2
来自主题: WaterWorld版 - Normal distribution
In probability theory, the normal (or Gaussian) distribution, is a
continuous probability distribution that is often used as a first
approximation to describe real-valued random variables that tend to cluster
around a single mean value. The graph of the associated probability density
function is “bell”-shaped, and is known as the Gaussian function or bell
curve:[nb 1]
f(x) = \tfrac{1}{\sqrt{2\pi\sigma^2}}\; e^{ -\frac{(x-\mu)^2}{2\sigma^2}
},
where parameter μ is the mean (location of the pe... 阅读全帖
c******o
发帖数: 1184
3
来自主题: WaterWorld版 - Zakaria: Will China stay on course?
Will China stay on course?
By Fareed Zakaria, CNN
Events in the Middle East and North Africa are of historic importance, but
the even bigger, long-term story is the rise of China. What path will it
choose at home and abroad in the years ahead?
For decades there has been debate at the highest levels of the Chinese
government about how much to modernize politically to ensure growth and
stave off revolution.
It’s notoriously difficult to analyze the inner workings off the Chinese
Communist Party. ... 阅读全帖
R**o
发帖数: 311
4
来自主题: WaterWorld版 - 同性戀的起源:天生抑或後天
我还没有在任何权威学术期刊看到犯罪也有基因的论文,如果你觉得如此,请给出引文
出处。
你指摘人们忽略社会学心理学家,而事实反倒是你忽略了心理学家的观点。美国最权威的心理学协会
APA明确指出同性恋不是心理疾病,请看:
http://www.apa.org/helpcenter/sexual-orientation.aspx
Is homosexuality a mental illness or emotional problem?
No. Psychologists, psychiatrists, and other mental health professionals
agree that homosexuality is not an illness, a mental disorder, or an
emotional problem. More than 35 years of objective, well-designed
scientific research has shown that homosexuality, in and itself, is not
as... 阅读全帖
r*********n
发帖数: 949
5
Letter sent.
Hello Mr. Kirk,
I have to write to you after reading the article " Public universities
should not accept students from countries that have bad relations with US"
that published in Kansas state collegian, please see the link:
http://www.kstatecollegian.com/opinion/public-universities-shou
The article lies and spreads hatred/bias toward Chinese students which made
me and my family very uncomfortable.
I have been in US for years. My nephew also recently enrolled in Kansas
state college... 阅读全帖
P****e
发帖数: 385
6
来自主题: WaterWorld版 - 叶诗文回顾-英文版 (转载)
【 以下文字转载自 Olympics 讨论区 】
发信人: Pierce (PEC), 信区: Olympics
标 题: 叶诗文回顾-英文版
发信站: BBS 未名空间站 (Wed Aug 1 11:54:13 2012, 美东)
写了个英文版,内容和中文版的不完全一样。格式在这里太难看了,感兴趣的可以看这
个google docs的Word版,建议下载看,google的rendering做得极难看。
https://docs.google.com/open?id=0B9G0r2y_0GdARUZWRUxXOUI4SVk
原来的中文版在这儿:
http://www.mitbbs.com/article_t0/WaterWorld/1523183.html
有几篇我觉得写得比较中肯的报道,也推荐一下:
http://www.telegraph.co.uk/sport/olympics/swimming/9442966/Lond
http://2012.qq.com/a/20120731/001196.htm
The media’s uproar around Ye Shiwen’s... 阅读全帖
t******n
发帖数: 2939
7
☆─────────────────────────────────────☆
ympc (bear) 于 (Wed May 1 13:25:20 2013, 美东) 提到:
都一个德行?
☆─────────────────────────────────────☆
sequel (暴力云) 于 (Wed May 1 13:25:52 2013, 美东) 提到:
被骚扰总比坐牢强吧?
☆─────────────────────────────────────☆
ympc (bear) 于 (Wed May 1 13:29:16 2013, 美东) 提到:
就没一点点底气面对公众?
我一个都不认识,我要是认识其中一个就问问。

☆─────────────────────────────────────☆
CDN (mimi) 于 (Wed May 1 13:37:38 2013, 美东) 提到:
他们就是因为面对公众才被骚扰的
更多地面对公众,会更多地被骚扰
除非他们改变立场,按照暴民们的要求指孙维为凶手
☆─────────────... 阅读全帖
w******e
发帖数: 953
8
How safe does transgenic food need to be?
Laura DeFrancesco1
Journal name:
Nature Biotechnology
Volume:
31,
Pages:
794–802
Year published:
(2013)
DOI:
doi:10.1038/nbt.2686
Published online 10 September 2013 Corrected online 26 September 2013
Article tools
PDF
How safe does transgenic food need to be?
Download as PDF (812 KB) View interactive PDF in ReadCube
Citation
Reprints
Rights & permissions
Article metrics
Disputes over how to assess a foodstuff's safety continue to play into
public fears a... 阅读全帖
r******n
发帖数: 134
9
This is my full complaint in 5c. Feel free to copy and paste. It really
takes a few minutes to complete. Please click on the link above and file a
complaint. We can make this work!
I am writing to you to express my grave concern and outrage over the
Kids Table segment of the Jimmy Kimmel Live show aired on October 16, 2013.
During the segment, it was suggested that killing every one in China would
be a solution to the U.S. debt problem. I am appalled and disturbed by the
host Jimmy Kimmel's resp... 阅读全帖
a*******n
发帖数: 96
10
Discrimination is a legal term which means an act of negative impact based
upon a bias towards other race, gender, belief extra, Chinese ppl in US may
be biased towards some other minorities, the vast majority of them are
certainly not in the position to act upon their biased opinion.
A bias may be immoral, but certainly is not illegal by itself.
q**x
发帖数: 1636
11
来自主题: WaterWorld版 - 中国啥时崩溃?
华裔投机分子章家敦
全球兜售“中国崩溃论” - 人民日报
if the intention is biased, then the data is biased...political tasks? ameri
$0.05?
i*****a
发帖数: 7272
12
【 以下文字转载自 LeisureTime 讨论区 】
发信人: pennyjudy (penny), 信区: LeisureTime
标 题: 读书笔记-大数据时代(Big Data) Viktor Mayer-Schönberger
发信站: BBS 未名空间站 (Sat Aug 30 21:47:36 2014, 美东)
最近大数据概念盛行,所以捡起这本书读了读,算是有了概念。
书中提到大数据与传统统计抽样的方法不同。传统的统计则只抽取部分样本信息,通过
分析这部分信息来推断群体整体的特征。而大数据方法是利用所有可以接触的数据,试
图挖掘出事物之间可能的相关性,尤其是不容易预测的,又有商业价值的相关性。应用
大数据的例子其中一个就是利用在google上有关感冒症状的搜索词条及ip地址分布来预
测流感的传播和爆发, 还有通过从前机票的价格数据推断将来机票价格随时间的浮动。
其实我觉得这个同传统统计的比较有些牵强。其实传统统计也是运用全部可用的数据的
,很少有统计师只用一部分数据,把其他的有用的数据扔掉。只是因为数据采集的成本
高,而导致数据只能覆盖一部分样本。比如制药业... 阅读全帖
c******n
发帖数: 16666
13
来自主题: Joke版 - 大妈对fox台的看法
CNN的看到怕是要笑翻在地了吧 FOX至少还要点面子 不时拉几个左翼的嘉宾上来吵吵架
--------------------------------------------------------------------
不是啊 我之前在英国 FOX是出名的biased的在英国 都觉得是美国racist的
conservatives才看的 大部分媒体都有些biased 但是不至于像FOX 像之前Stephen
Merchant 在某个节目上说的 他在美国时不知道该看哪个news channel 因为他不想被
非常baised的媒体诱导 他看FOX news时不敢相信听到的 很多段子结束后 他都有错觉
等south park那个creator突然跳出来 因为实在是太像spoof了
t*******d
发帖数: 2570
14
来自主题: Belief版 - 問一下 myelsa
列一下美国心理学学会关于性取向的FAQ吧。
对同性恋的了解市面上的误解很多,第一步是了解同性恋到底是什么样的。
http://www.apa.org/helpcenter/sexual-orientation.aspx
Sexual orientation and homosexuality
1. What is sexual orientation?
Sexual orientation is an enduring emotional, romantic, sexual, or
affectional attraction toward others. It is easily distinguished from other
components of sexuality including biological sex, gender identity (the
psychological sense of being male or female), and the social gender role (
adherence to cultural norms for fe... 阅读全帖
G******e
发帖数: 9567
15
来自主题: TrustInJesus版 - ZT - 上帝怎么看同性恋?

Source:
Jay and Young. The Gay Report. Summit Books, 1979, p. 275.
"In The Gay Report, by homosexual researchers Karla Jay and Allen Young, the
authors report data showing that 73 percent of homosexuals surveyed had at
some time had sex with boys sixteen to nineteen years of age or younger. "
Rebuttal:
http://www.williamapercy.com/wiki/index.php?title=Reviews:The_G
Young and Jay estimate that perhaps 400,000 men received or were exposed to
the male questionnaire. A grand total of 4,400 question... 阅读全帖
j*******7
发帖数: 6300
16
来自主题: TrustInJesus版 - The Reliability of the Gospels
Is the Bible True? The Cumulative Case for the Reliability of the Gospels (
Free Bible Insert)
The case for the reliability of the New Testament Gospel eyewitness accounts
is dependent on the reliability of the authors. Eyewitnesses are typically
evaluated in criminal trials by asking four critical questions: Were the
witnesses really present at the time of the crime? Can the witnesses’
accounts be corroborated in some way? Have the witnesses changed their story
over time? Do the witnesses have ... 阅读全帖
v*******e
发帖数: 1715
17
。。。我相信我比你们两个要更不迷信的多的5倍。我也更能宣称自己不迷信谁?
而我却能感觉到这里的影响。
到底谁愚蠢。
我看是你们。
the most important: know one self.
if I am biased, know I am biased.
a**u
发帖数: 8107
18
☆─────────────────────────────────────☆
runsun (runsun) 于 (Fri Dec 18 14:14:14 2009, 北京) 提到:
美国加州2009.8.29
D:科学家说数十亿年前金星曾像地球有海洋但干枯了,部分原因是金星太接近太阳,它
有水存在可能表示那里曾有物质生命,今日科学家相信,金星有微生物存在,金星是否
曾像地球能长养生命?
M:是,它过去是,它曾是美丽的星球,现在已不再是,那里完全没有生命了,没有任何
生物,很遗憾。
D:那里过去曾有生命,他们看起来像我们吗?
M:是,是,他们看起来像我们。
D:火星,地球和金星为何都有类似人类的众生居住,我们有类似的祖先吗?谢谢M。
M:我们只有一个祖先那就是上帝,有些变成堕落天使,他们看起来类似我们,是因为我
们有类似的功德,包括我们银河中的火星,金星等星球,只问我们银河中的不要问太远
的星球,否则我就不用出定了。虽然你的问题很简单,但我要查证,需要一些时间,为
了地球的生存我们也都很忙,所以我得牺牲你们的要求,一直拖到今天,我好不容易才
排进今天的行程里。
D:谢谢M
... 阅读全帖
l**a
发帖数: 5175
19
................a typical example of ....................
This review is from: The Hindus: An Alternative History (Kindle Edition)
Banned in Bangalore, the New York Times op-ed said. Why ban a book, no
matter how offensive, the literati fumed. No one can truly ban a book in the
Internet age, friends pointed out. Naturally, I bought a copy—and more to
the point, read the book.
Before we proceed, let me say that I do not support banning any book (or
even legally requiring a book to be withdrawn fr... 阅读全帖
S**U
发帖数: 7025
20
Marxist interpretation of history suffer from confirmation bias.
Confirmation bias, also called myside bias, is the tendency to search for,
interpret, or recall information in a way that confirms one's beliefs or
hypotheses.[Note 1][1] It is a type of cognitive bias and a systematic error
of inductive reasoning. People display this bias when they gather or
remember information selectively, or when they interpret it in a biased way.
The effect is stronger for emotionally charged issues and for de... 阅读全帖
a***y
发帖数: 19743
21
来自主题: Apple版 - 我喜欢苹果的原因
有人说这个图是biased
我们不管是不是biased
iPad出来的时候可是一堆人骂难看,遗像框。
结果别人都抄,他们又叫好,还说这不是抄,pad就只能长这样。就连白色版都要苹果
带路。
t*******f
发帖数: 2634
22
Have both, and like 3500L better.
Flash and Ram do not mean anything to me, as long as
enough. Wireless is good enough if it is faster
than my internet connection.
I never claimed that I was not biased. Yes, I am biased,
and I like Netgear better.
You can have your own bias. You have shown it also.

度基
的)
接搞
i****x
发帖数: 17565
23
来自主题: Hardware版 - 5Ghz是不是比2。4ghz的辐射更强?
认英文的话,随便读读这些权威机构的报告吧。注意,别拿”没有证据证明辐射有害“
说话,再解释一遍,统计学的假设检验理论根本不可能给出辐射无害的证明,只能要么
证明辐射有害要么无法证明辐射有害。
In 2006 a large Danish group's study about the connection between mobile
phone use and cancer incidence was published. It followed over 420,000
Danish citizens for 20 years and showed no increased risk of cancer.[21] A
2011 follow-up confirmed these findings.[22]
The authors reported the following conclusion:
Overall, no increase in risk of glioma or meningioma was observed with use
of mobile phones. ... 阅读全帖
i****x
发帖数: 17565
24
来自主题: Hardware版 - 5Ghz是不是比2。4ghz的辐射更强?
你那个国内烂校学报的”科研“结论跟以下所有结论矛盾的时候,你说我们该信谁呢?
In 2006 a large Danish group's study about the connection between mobile
phone use and cancer incidence was published. It followed over 420,000
Danish citizens for 20 years and showed no increased risk of cancer.[21] A
2011 follow-up confirmed these findings.[22]
The following studies of long time exposure have been published:
The 13 nation INTERPHONE project – the largest study of its kind ever
undertaken – was published in 2011 and did not find a solid li... 阅读全帖
z****e
发帖数: 54598
25
来自主题: Programming版 - node来势凶猛,已经完胜Ruby了
这个统计还能biased?
给说说怎么个biased法?
这么简单的数数还能数错了?
j***r
发帖数: 316
26
来自主题: Biology版 - 最近怎么没人劝退去花街了?
三年前我读MFE,1年的PROGRAM,毕业以后找到工作(当时来这里发过帖子),一直干
到现在,每年就是三月份填税表的时候难过。
两年前我的同学跟风也去读了一个MFE,结果赶上华尔街最大的崩盘,工作机会很少,
几经曲折,最后还是找到了一家大的公司,现在升了VP,手下管着几个人。
一年前我的另一个同学也不干博士后,去读MFE了。半年后找到INTERN若干,后来直接
拿到了一公司的FULLTIME OFFER,把课转成PARTTIME的了。
以上是所有我和我的大学同学们读MFE的结果,目前为止还没有那个人试了不成QUIT掉
或者转行做别的了,所以不较真的说,这是一个没有什么SELECTION BIASED的结果。当
然细追究起来,这里的一个人找到工作的过程都有一定的偶然性在里头,也许重新来一
回就不一定这么运气。但是反过来讲,三个没有BIASED的例子也或多或少的说明了MFE
这条路还是走的通的。
过好自己的人生就是打桥牌一样,关键的其实是一开始的BID。大多数情况下,怎么去
MAKE倒都是细枝末节. 而在这个过程中,信息,或者准确的说能够正确的接受信息,是
很重要的。很多事情,往往是身边
l***m
发帖数: 26
27
还有一个biased ligand的说法。概念去看看GPCR biased ligand的review吧!
z*h
发帖数: 773
28
来自主题: Biology版 - Biofuels future and criticism (转载)
【 以下文字转载自 ChemEng 讨论区 】
发信人: zyh (CH2O), 信区: ChemEng
标 题: Biofuels future and criticism
发信站: BBS 未名空间站 (Wed Oct 12 22:42:24 2011, 美东)
Highlights
► We are flooded by a wave of biased or even false information about
biofuels.
► Most advanced biofuels cannot be economically produced compared to
ethanol and H2.
► Thermodynamics determines economics.
► Cellulosic ethanol and butanol are the best short- and middle-term
biofuels.
► Sugary hydrogen would be the best ultima... 阅读全帖
s******9
发帖数: 283
29
来自主题: Biology版 - science的编辑抢稿
The peer review process at Science
http://www.publications.parliament.uk/pa/cm201011/cmselect/cmsc
1.Peer-reviewed scientific publications represent the primary useful archive
of scientific progress. Scientific publications have served other main
functions as well: They are a primary means of evaluating scientists and
institutions, and they have become a main pathway for informing the general
public about science, through coverage in the media and press releases (new
results are news). Peer-revi... 阅读全帖
l**********1
发帖数: 5204
30
not 大侠 but 小虾米
>在不确定binding site的情况下,怎么区别antagonist 和 negative allosteric
modulator?
sometimes even antagonistic actions are biased.
pls refer pituitary gonadotropin follicle stimulating hormone (FSH) and its
receptor actions by ADX61623 compound as A negative allosteric modulator
References:
Dias JA et al. (2011)
A negative allosteric modulator demonstrates biased antagonism of the
follicle stimulating hormone receptor.
Mol Cell Endocrinol. 333: 143-50.
PubMed link:
http://www.ncbi.nlm.nih.go... 阅读全帖
F*Q
发帖数: 3259
31
来自主题: Biology版 - eLife, drama free
It may REDUCE 瞎说. To avoid? No way!
The main comment that led to the rejection of my MS was from a technically
biased person who is not from my field. I suspected that person was the one
who scooped a small part of my results and who later on rejected my MS at
another journal. The comments the eLife editor sent me were less biased (
because the editor modified them) than those from the original comments I
received from another journal that I suspected was made by the same
fxxking reviewer.
The l... 阅读全帖
s****l
发帖数: 10462
32
MinIon的数据已经出来了一些了。
大概看了下,总体上讲,还有很远的路要走。能不能真正进入市场还很难说。
single read accuracy只有60~70%,相当坑爹,但是可以长达好几千甚至好几万个碱
基。大部分有效的在几千的水平吧。
有的人说error is biased,也就是说很多reads都会在同一区域出错,这样一来,high
depth coverage也不太能帮上忙。但是也有的说,error is not biased,那么多测若
干遍也就能提高consensus accuracy了。
最大的好处就是便携和便宜了
Z****o
发帖数: 18
33
maybe I am biased...and other things equal, i would prefer big schools
what I want is more information and opinions...so that I could be less
biased...
and I wanna know, except big & small, are "other things" equal btw BC and
Madison...
Thanks!
z*h
发帖数: 773
34
来自主题: ChemEng版 - Biofuels future and criticism
Highlights
► We are flooded by a wave of biased or even false information about
biofuels.
► Most advanced biofuels cannot be economically produced compared to
ethanol and H2.
► Thermodynamics determines economics.
► Cellulosic ethanol and butanol are the best short- and middle-term
biofuels.
► Sugary hydrogen would be the best ultimate biofuel.
Abstract
doi:10.1016/j.procbio.2011.08.005
Since biofuels is a hot topic, many researchers new to this field are eager to p... 阅读全帖
z*h
发帖数: 773
35
来自主题: ChemEng版 - Biofuels future and criticism
Highlights
► We are flooded by a wave of biased or even false information about
biofuels.
► Most advanced biofuels cannot be economically produced compared to
ethanol and H2.
► Thermodynamics determines economics.
► Cellulosic ethanol and butanol are the best short- and middle-term
biofuels.
► Sugary hydrogen would be the best ultimate biofuel.
Abstract
doi:10.1016/j.procbio.2011.08.005
Since biofuels is a hot topic, many researchers new to this field are eager to p... 阅读全帖
z*h
发帖数: 773
36
来自主题: Chemistry版 - Biofuels future and criticism (转载)
【 以下文字转载自 ChemEng 讨论区 】
发信人: zyh (CH2O), 信区: ChemEng
标 题: Biofuels future and criticism
发信站: BBS 未名空间站 (Wed Oct 12 22:42:24 2011, 美东)
Highlights
► We are flooded by a wave of biased or even false information about
biofuels.
► Most advanced biofuels cannot be economically produced compared to
ethanol and H2.
► Thermodynamics determines economics.
► Cellulosic ethanol and butanol are the best short- and middle-term
biofuels.
► Sugary hydrogen would be the best ultima... 阅读全帖
a*********7
发帖数: 30080
37
来自主题: ChineseMed版 - 加州执照针灸师考试内容[zt]
我做的正相反.
某人(在这件事)及某些人(在这个版)专挑一些有偏向中医的东东贴出来 (其中一些已被
证明是造谣), 我于是贴出一些不同的说法或事实, 让路过的人可以知道至少有两方的
观点, 不要轻信.
比如在这件事上, skim "quoting the part of the laws", 我补充了一下这个laws还
有一些看起来不那么让中医饭高兴的内容.
你可以说我有"biased focus", 但是, 那也是因为你们有更严重的"biased focus"在先
. 如果你们的讨论都是公允公正的, 我根本就没必要来做这种补充, 对不?
再一次, 很高兴你的攻击 -- 如果啥时候你不攻击我了, 我就该反省一下自己的人品了.
W******r
发帖数: 789
38
来自主题: ChineseMed版 - 再论疫苗(通俗易懂版)
这个问题很难解释得清楚。我试着尽我所能解释一下吧。
从我做生物研究的经历来看,生物学术界有一个biased atmosphere created by the
funding agents。这个biased atmosphere通常和某种商业利益有关。大部分科研人员
会盲目地follow而不问究竟。只有少数真正懂得思考的人会质疑。但这部分人往往会受
到排挤而成为你们口中的民科。所以我并不认为专业学术文章就比你们口中的民科文章
可靠。从某种意义上说,专业人士和容易被忽悠的普通老百姓并没有多大差别。大部分
专业人士也只不过是盲目地相信了学术权威的话和主流文献的结论,没多少人会有时间
有条件自己真的做个实验来验证一下。而peer review这个系统其实也就是在比持哪种
观点的人多。
对于一个具体的问题,首先我会搞清楚主流专业人士为什么会持这种观点。以我所知,
大部分人相信疫苗是因为两个原因:(1)疫苗有一个理论体系科学地保证了它的安全
性和有效性。(2)在历史上疫苗消灭了许多传染病。这两个问题我在前面已多次阐述
。这里再来小结一下。(1)疫苗是engineer过的,而且添加了许多东西,是人... 阅读全帖
s*****w
发帖数: 2065
39
来自主题: Economics版 - 问个econometrics问题(包子贴)
再问一个问题,以上这些都是假设Y和X没有问题的。
如果知道观察到的Y是biased,因此E也是biased,而且知道Y(t-1)和Y(t)是负相关的,
那么用WLS的时候用Y(t-1)当weight是不是就能解决问题呢?得出来的B(^)还是不是
unbiased和consistent啊?因为现在E(E)<>0了。
w****r
发帖数: 748
40
来自主题: Economics版 - 请教一个OLS的问题
我们的模型是Y=X \beta +u.如果模型设定正确,它的含义就是说,DGP就是这么产生的
。那么我们要做prediction需要什么?我们需要知道\beta的值。给定了\beta的值,知
道了X,我们就能predict出来Y。那我们怎么知道\beta的值呢?Estimation. 方法很多
,OLS是一种。那用OLS要得到一个合理的estimator需要什么条件? 除了Full Rank之外
,我们需要exogeneity,至少是weak的(E(ux)=0),要不然OLS的结果是Biased,甚至
是inconsistent的.显然,即便我们可以勉强接受biased,inconsistency是无论如何也
不能接受的。
这个逻辑里面,你觉得只有数学含义,没有经济学含义?
d**r
发帖数: 899
41
JMOSCal - R1.0
Introduction
In the design of analog Integrated Circuits, the designers have to do
lots of hand calculations with simplified MOS models. For example,
given the biases and to calculate the sizes, given sizes and to
calculate the biases, etc. These calculations are very time-consuming
and inaccurate. JMOSCal will do most of the calculations for you
quickly, with an accuracy of simulations.
For more details:
http://www.esat.kuleuven.ac.be/~tchen/JMOSCal/
ET
发帖数: 10701
42
now.
nothing else but biasing
it is so easy for bisaing if taking diff. in. single ended out .
on the other hand, if taking full differential circuits, every cascode trans
istors will have to be biased by external voltage, or some ways.
the last chapter of Paul Grey's book is totally about the fully differential
circuits. we can see the full diff. is so much easy to understand. if the w
hole book are taught by the fully diffential , i guess it's much easier to l
earn.
h********t
发帖数: 555
43
来自主题: EE版 - 请教一个非常简单的问题
the leakage is primarily due to sampling switches, not the silicon oxide between the capacitor top plate and bottom plate.Most CMOS processes are junction isolated. If you draw a structure of such MOSFET, you will see reverse biased PN junction associated with the MOSFET. The reverse biased PN junction has leakage current, which is exponentially increases with temperature.Even if you use a silicon-oxide isolated process, there is still some leakage current through the channel. The charge migh
g****t
发帖数: 31659
44
来自主题: EE版 - 请教一个非常简单的问题
刚才翻了翻书。发现这个问题确实不简单。
hold circuit一般处理的都是比较短时间的hold,
leakage造成的drop的处理已经很复杂。
他原问题要求的hold时间,肯定比一般的
zero order hold之类东西里面的hold时间长不少。
所以我想,最佳方案可能还就是A/D然后把数字存起来。

the leakage is primarily due to sampling switches, not the silicon oxide
between the capacitor top plate and bottom plate.Most CMOS processes are
junction isolated. If you draw a structure of such MOSFET, you will see
reverse biased PN junction associated with the MOSFET. The reverse biased PN
junction has leakage current, which is exponent
h***a
发帖数: 312
45
来自主题: MedicalCareer版 - 请教: confounding bias vs. effect modification
Confounding: A situation in which the effect or association between an
exposure and outcome is distorted by the presence of another variable.
Positive confounding (when the observed association is biased away from the
null) and negative confounding (when the observed association is biased
toward the null) both occur.

* Effect modification : a variable that differentially (positively and
negatively) modifies the observed effect of a risk factor on disease status.
Different groups have diffe... 阅读全帖
r***o
发帖数: 162
46
来自主题: Pharmaceutical版 - pharma industry的科普知识?
being an editor of NEJM does not necessarily make her an expert of pharma
industry.
She is biased toward popular opinions: dominance of popularity, so her book
can sell well.
By the way, my opinion is also biased. :-)
c**m
发帖数: 1632
47
来自主题: Physics版 - 光照下的LED
It is not a reverse biased photodiode, right? So the electrons are not depleted through the biased source.
I guess dynamic resistance change is a much better term for this. For LED under positive bias, we have the dynamic resistance of (V-Vth)/I. Now the green light is pumping the electrons from the valence band to the conduction band, so, we have dN, the chemical potential change is proportional to (N+dN)^(2/3) and the interband recombination is proportional to N+dN. So, practically we are comp
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