m********1
发帖数: 681 | 1 还有一点，啥价postulate:
A postulate is an (usually fundamental) assumption a writer makes in order
to discuss a subject in a coherent fashion. Examples of postulates are the
Born rule in quantum mechanics (which defines how the wave function is to be
interpreted), or in classical mechanics the existence of a Lagrangian (
which defines the starting point of theoretical mechanics).
A principle is a more or less universally observed (usually fundamental)
fact. Examples of principles are the second law of... 阅读全帖 |
|
a*****g
发帖数: 19398 | 2 http://www.huffingtonpost.com/david-gosset/weiqi-versus-chess_b
Using a universally relevant metaphor, Zbigniew Brzezinski, former National
Security Adviser to US president Jimmy Carter, wrote in The Grand Chessboard
(1997): "Eurasia is the chessboard on which the struggle for global primacy
continues to be played." China's New Silk Road strategy certainly
integrates the importance of Eurasia but it also neutralizes the US pivot to
Asia by enveloping it in a move which is broader both in space a... 阅读全帖 |
|
a*****g
发帖数: 19398 | 3 http://www.huffingtonpost.com/david-gosset/weiqi-versus-chess_b
Using a universally relevant metaphor, Zbigniew Brzezinski, former National
Security Adviser to US president Jimmy Carter, wrote in The Grand Chessboard
(1997): "Eurasia is the chessboard on which the struggle for global primacy
continues to be played." China's New Silk Road strategy certainly
integrates the importance of Eurasia but it also neutralizes the US pivot to
Asia by enveloping it in a move which is broader both in space a... 阅读全帖 |
|
D*****r
发帖数: 6791 | 4 Much of what people do is done in the name of God. Irishmen blow each other
up in his name. Arabs blow themselves up in his name. Imams and ayatollahs
oppress women in his name. Celibate popes and priests mess up people's sex
lives in his name. Jewish shohets cut live animals' throats in his name. The
achievements of religion in past history -- bloody crusades, torturing
inquisitions, mass-murdering conquistadors, culture-destroying missionaries,
legally enforced resistance to each new piece of ... 阅读全帖 |
|
f**d
发帖数: 768 | 5 这是一本计算神经科学的优秀著作，全文拷贝这里（图和公式缺），有兴趣的同学可以
阅读
如需要，我可以分享PDF文件（－－仅供个人学习，无商业用途）
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
|
l**i
发帖数: 8144 | 6 简单地讲 就是谋事在人 成事在天
认为社会发展沿着某个预定方向发展的理论 都是傻逼理论
--------------------------------------
Anthropic principle
From Wikipedia, the free encyclopedia
In astrophysics and cosmology, the anthropic principle is the philosophical
argument that observations of the physical Universe must be compatible with
the conscious life that observes it. Some proponents of the argument reason
that it explains why the Universe has the age and the fundamental physical
constants necessary to accommodate conscious life. As a ... 阅读全帖 |
|
t******l
发帖数: 10908 | 7 这事出有因是因为一道破题涉及到平行公理。于是俺就强调了一下平行公理是欧几里德
平面几何的核心，让娃上网查 Euclid's fifth postulate 后解释给俺听。
然后娃开始罗罗嗦嗦开始叙述 parallel 然后 angle 啥的。。。
俺一听 angle 就急了，说特么欧几里德又不是文科生说话那么罗嗦，你说的这个是
theorem of angles and parallel lines。。。平行公理就是“过直线外一点有且仅有
一条平行线”，你说的这些都可以从 postulate 开始证明。。。如果追求概念图景但
追求特别严格的扣牛角尖的话，这么整。。。
首先用平行公理证明四个直角的矩形存在。。。娃目瞪口呆说这也要证明， 我说废话
你们数学老师画了三个直角咋知道第四个一定是直角，然后我拿出一个排球说，看看排
球上的球面上矩形好了。。。
遂左膀往“角度”一路奔过去，可以证明娃你刚才说的 theorem of angles and
parallel lines。。。继续往下还可以证明三角形内角和是 180 度。。。娃又目瞪口
呆说这也要证明？我问你们数学老师证明过没有？娃想了想... 阅读全帖 |
|
j******n
发帖数: 21641 | 8 来自主题: LeisureTime版 - 梁公启超 记得我们学元数学的时候考试题是用逻辑证明:1+1=2
简单证明如下,不过罗素写了300页
The proof starts from the Peano Postulates, which define the natural
numbers N. N is the smallest set satisfying these postulates:
P1. 1 is in N.
P2. If x is in N, then its "successor" x' is in N.
P3. There is no x such that x' = 1.
P4. If x isn't 1, then there is a y in N such that y' = x.
P5. If S is a subset of N, 1 is in S, and the implication
(x in S => x' in S) holds, then S = N.
Then you have to define addition recursively:
Def: Let a and b be ... 阅读全帖 |
|
I*********t
发帖数: 5258 | 9 其实你可以“证明”1+1=2的
http://mathforum.org/library/drmath/view/51551.html
The proof starts from the Peano Postulates, which define the natural numbers
N. N is the smallest set satisfying these postulates:
P1. 1 is in N.
P2. If x is in N, then its "successor" x' is in N.
P3. There is no x such that x' = 1.
P4. If x isn't 1, then there is a y in N such that y' = x.
P5. If S is a subset of N, 1 is in S, and the implication
(x in S => x' in S) holds, then S = N.
Then you have to defi... 阅读全帖 |
|
s********n
发帖数: 26222 | 10 【 以下文字转载自 Military 讨论区 】
发信人: smokinggun (硝烟), 信区: Military
标 题: Bernstein原著和方舟子剽窃文的对应分析ZT
发信站: BBS 未名空间站 (Thu Aug 25 02:01:14 2011, 美东)
China\'s Science Cop Plagiarized His Professor
While a PH.D. Student at MSU
Fang Shimin (aka Fang Zhouzi) is a well known figure in the world of
academia. Science magazine and Nature journals have several times reported
his fraud busting, whistleblowing activities in China. Science magazine
alone has given him the titles of “China’s science misconduct watchdog... 阅读全帖 |
|
s********n
发帖数: 26222 | 11 China\'s Science Cop Plagiarized His Professor
While a PH.D. Student at MSU
Fang Shimin (aka Fang Zhouzi) is a well known figure in the world of
academia. Science magazine and Nature journals have several times reported
his fraud busting, whistleblowing activities in China. Science magazine
alone has given him the titles of “China’s science misconduct watchdog”,
“China’s Fraud Buster”, “Chinese Whistleblower”. [1-4] These articles
have been widely circulated in China, and Fang himself has been u... 阅读全帖 |
|
h*****9
发帖数: 6643 | 12 没听说过是你自己无知。这只能说明你是个很容易被骗的无知之徒， 你又要凭你自己的无知骂人，你又无耻了。
揭露 BIG-BANG 是披着科学外衣的宗教，这在10年前就有很多文章了。
THE "BIG BANG" IS JUST RELIGION DISGUISED AS SCIENCE
by Michael Rivero
Once upon a time, a long time ago, there was this guy named Aristotle.
Pretty sharp fellow; he thought up a lot of good things. But, occasionally
he made a mistake.
One mistake he made was to toss an orange up in the air and watch it come
straight back down to his hand. Aristotle reasoned that if he was moving,
the orange would have flown... 阅读全帖 |
|
B**W
发帖数: 2273 | 13 Nun famous for kissing Elvis prays for miracle
December 23, 2011
By STEPHANIE REITZ
Associated Press
BETHLEHEM, Conn. (AP) — In the little town of Bethlehem, a cloistered nun
whose luminous blue eyes entranced Elvis Presley in his first on-screen
movie kiss is praying for a Christmas miracle.
Dolores Hart, who walked away from Hollywood stardom in 1963 to become a nun
in rural Bethlehem, Conn., now finds herself back in the spotlight. But
this time it's all about serving the King of Kings, not s... 阅读全帖 |
|
s********n
发帖数: 26222 | 14 【 以下文字转载自 Military 讨论区 】
发信人: smokinggun (硝烟), 信区: Military
标 题: Bernstein原著和方舟子剽窃文的对应分析ZT
发信站: BBS 未名空间站 (Thu Aug 25 02:01:14 2011, 美东)
China\'s Science Cop Plagiarized His Professor
While a PH.D. Student at MSU
Fang Shimin (aka Fang Zhouzi) is a well known figure in the world of
academia. Science magazine and Nature journals have several times reported
his fraud busting, whistleblowing activities in China. Science magazine
alone has given him the titles of “China’s science misconduct watchdog... 阅读全帖 |
|
s********n
发帖数: 26222 | 15 【 以下文字转载自 Military 讨论区 】
发信人: smokinggun (硝烟), 信区: Military
标 题: Bernstein原著和方舟子剽窃文的对应分析ZT
发信站: BBS 未名空间站 (Thu Aug 25 02:01:14 2011, 美东)
China\'s Science Cop Plagiarized His Professor
While a PH.D. Student at MSU
Fang Shimin (aka Fang Zhouzi) is a well known figure in the world of
academia. Science magazine and Nature journals have several times reported
his fraud busting, whistleblowing activities in China. Science magazine
alone has given him the titles of “China’s science misconduct watchdog... 阅读全帖 |
|
s*******e
发帖数: 15758 | 16 Engineers and scientists will never make as much money as business
executives.
A rigorous mathematical proof explains why this is true:
Postulate 1: Knowledge is power
Postulate 2: Time is money
As every engineer knows:
Power = Work / Time
Since: Knowledge = Power
and
Time = Money
Then: Knowledge = Work / Money
Solving for Money, we get:
Money = Work / Knowledge
Thus, as knowledge approaches zero, money approaches infinity regardless of
work done.
Conclusion: The less you know, the more you m |
|
o******o
发帖数: 28 | 17 Value of human capital
Engineers and scientists will never make as much money as business executives.
Now a rigorous mathematical proof that explains why this is true:
Postulate 1: Knowledge is Power.
Postulate 2: Time is Money.
As every engineer knows,
Work |
|
i*******e
发帖数: 349 | 18 My 2 cents. Disclaimer: I am not a micro theorist.
A demand equation/system describes human behavior by linking quantity
demanded to price. Utility theory posits that people maximizes an objective,
often under the assumption of rationality. Under the weak axioms of
revealed preference, we know the Marshallian demand is downward sloping.
A alternative approach perhaps can start with some behavioral postulates/
axioms without specifying an objective (utility). Just like traditional
utility theory.... 阅读全帖 |
|
t********e
发帖数: 90 | 19 (1) Neither Conjecture A or B is related to Bertrand's Postulate, which
states there is a prime between (n,2n-2) for all n>3.
Bertland Postulate is basically saying G(n)
(2) I did mention Opperman conjecture in my original post: there is always a
prime in the intervals (n^2,(n+1)^2).
However, a stonger conjecture there is always a prime in the intervals (n,n+
n^{1/2}) and Opperman conjecture is not equivalent to the two conjectures I
proposed here.
Simply put, Conjecture A and Conjecture B ass |
|
l**n
发帖数: 67 | 20 This just serves as a short review of the special theory of
relativity(SR). The main concern here are some basic concepts
which will be used extensively later.
The physics statement in SR is the first postulate by Einstein.
"The laws of physics take the same form of in different inertia
frames". This is our belief. And the SR could be derived from
different approaches.
1.Started from 2nd postulate by Einstein, the speed of light is
a constant in different inertia frames. We always say 2nd postu- |
|
t***h
发帖数: 40 | 21 IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
SECOND APPELATE DISTRICT
DIVISION TWO
Wan (aka Winnie) Tin ) Case #: B222712
)
Plaintiff and Respondent, ) (Sup. Ct. No. CK71139)
v. )
Los Angeles County Superior Court )
)
In re Joshua Tin )
)
----------------------------------------------------------------)
APPELLANT’S... 阅读全帖 |
|
G***G
发帖数: 16778 | 22 【 以下文字转载自 USANews 讨论区 】
发信人: tshch (大丈夫), 信区: USANews
标 题: 这就是美国的法律
发信站: BBS 未名空间站 (Mon Nov 19 02:57:27 2012, 美东)
IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
SECOND APPELATE DISTRICT
DIVISION TWO
Wan (aka Winnie) Tin ) Case #: B222712
)
Plaintiff and Respondent, ) (Sup. Ct. No. CK71139)
v. )
Los Angeles County Superior Court )
)
In re Joshua Tin ... 阅读全帖 |
|
y***o
发帖数: 145 | 23 这是真人真事， 请大家舆论支持。
IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
SECOND APPELATE DISTRICT
DIVISION TWO
Wan (aka Winnie) Tin ) Case #: B222712
)
Plaintiff and Respondent, ) (Sup. Ct. No. CK71139)
v. )
Los Angeles County Superior Court )
)
In re Joshua Tin )
)
------------------------------------------------------------... 阅读全帖 |
|
b********n
发帖数: 38600 | 24 http://www.telegraph.co.uk/history/world-war-two/7961211/Hitler
By Heidi Blake
6:25AM BST 24 Aug 2010
Saliva samples taken from 39 relatives of the Nazi leader show he may have
had biological links to the “subhuman” races that he tried to exterminate
during the Holocaust.
Jean-Paul Mulders, a Belgian journalist, and Marc Vermeeren, a historian,
tracked down the Fuhrer’s relatives, including an Austrian farmer who was
his cousin, earlier this year.
A chromosome called Haplogroup E1b1b1 which show... 阅读全帖 |
|
R****a
发帖数: 6858 | 25 从而便于在中东北非发动针对美元的代理人战争.
The Russia-China Axis Grows
March 14, 2013 By Ariel Cohen 16 Comments
34 Print This Post
China’s new president Xi Jinping will make his first official foreign visit
later this month. He will visit Russia, in a trip Chinese sources say “
will improve relations and cement strategic partnership.”
Washington should pay attention to the strengthening ties between Moscow and
Beijing. These giant neighbors have the longest shared land border in the
world, and trade between the tw... 阅读全帖 |
|
T**********e
发帖数: 29576 | 26 Maurice Wilkins把Franklin的DNA X-RAY 背着她给Watson 和 Crick展示,成全这两位
推导出DNA双螺旋结构发表在NATURE, 最后这三个老哥得了诺贝尔奖. 而Franklin得癌
症死掉.
Celebrating Rosalind Franklin: a perfect example of single-minded devotion
to research
Today's Google Doodle honours pioneering British biophysicist and x-ray
crystallographer, Rosalind Franklin
Today is the 93rd anniversary of the birth of British biophysicist Rosalind
Franklin, who was a pioneering x-ray crystallographer who is being honoured
today with a special Google Doodle.
N... 阅读全帖 |
|
o*********1
发帖数: 2608 | 27 顺便普及下非欧几何。
对空间相对性的思考完全从数学开始的，主要的想法是空间是不是绝对的（或者说是不
是只有一个理想的空间模型：欧几里得空间－－－就是平常说的平直空间）。 这是从
欧几里德第五公设开始的。
结论：
19世纪， Bolyai和Lobachevsky证明了非欧几何的存在。高斯更是理论上提出了曲率和
内蕴几何， 然后由黎曼推广到高维。 这些数学家的工作从哲学层面上说， 我们生活
的空间可能是平直的，也可能是弯曲的。黎曼更是第一个将时间和空间一起考虑的人，
所谓时空。
爱因斯坦是天纵之才， 用黎曼的语言提出了广义相对论。 他的工作的意义应该从
Bolyai的话来理解：
Bolyai ends his work by mentioning that it is not possible to decide through
mathematical reasoning alone if the geometry of the physical universe is
Euclidean or non-Euclidean; this is a task for the physical... 阅读全帖 |
|
h***2
发帖数: 923 | 28 这是个哲学问题(philosophy of science). 理论永远不可能被证明为真（truth），因
为理论有些部分是无法感知的，那些无法感知的是logical constructions或
postulated entities。如果没有发现悖论，并且理论和observational data没有重大冲
突，可以explain或predict observation，那理论就暂时被认为是合理的，也就是
plausible。 |
|
l******t
发帖数: 55733 | 29
哦，大牛。不过看起来是等价的：... results in the prediction that all forms
of energy contribute to the gravitational field generated by an object.
Relation to gravity[edit]
In physics, there are two distinct concepts of mass: the gravitational mass
and the inertial mass. The gravitational mass is the quantity that
determines the strength of the gravitational field generated by an object,
as well as the gravitational force acting on the object when it is immersed
in a gravitational field produced by other bodi... 阅读全帖 |
|
f***y
发帖数: 4447 | 30 http://en.wikipedia.org/wiki/Equal_temperament
Zhu Zaiyu (朱載堉), a prince of the Ming court, spent thirty years on
research based on the equal temperament idea originally postulated by his
father. He described his new pitch theory in his Fusion of Music and
Calendar 乐律融通 published in 1580. This was followed by the publication of
a detailed account of the new theory of the equal temperament with a
precise numerical specification for 12-TET in his 5,000-page work Complete
Compendium of Music and Pi... 阅读全帖 |
|
L***6
发帖数: 8307 | 31 他一个搞天体实验探测的有个p突破 需要的智商和杀白鼠的差不多
物理怎么发展？ 现在的先进理论 霍金和Susskind这些人的理论 实验做不出来 没有那
么高的energy 没法验证这些理论 lhc也找到higgs了 标准模型没给颠覆掉 很多碰运气
的实验比如找暗物质的 也没有大发现 所以理论和实验两块都停滞了
理论可以进一步复杂下去 比如膜理论这些 中国人里面应该没有几个真懂 但实验是瓶
颈 没有技术能力或财力造更高能的实验 政治家和选民也毫无兴趣 所以再先进的理论
都是postulate 没有意义 |
|
a***s
发帖数: 1084 | 32 【 以下文字转载自 Biology 讨论区 】
发信人: axugg (小木虫), 信区: Biology
标 题: Nature News on 谢张之争
发信站: BBS 未名空间站 (Mon Sep 21 15:29:21 2015, 美东)
http://www.nature.com/news/chinese-scientists-row-over-long-sou
张居然告诉nature自己能拿诺奖，这货简直疯了。
NDavid Cyranoski
21 September 2015
Article toolsRights & Permissions
Sinclair-Stammers/Science Photo Library
Neuroscientists in China say they have used magnetic fields to control
neurons and muscle cells in nematode worms (pictured), after identifying a
protein that senses magnetism... 阅读全帖 |
|
m********1
发帖数: 681 | 33 “这是量子力学的理论结构决定的,不是一个假设”
请看下面的解释。Max Born认为它就是一个假设。你认为不是，那是你的问题，不是我
错了。
In quantum mechanics (physics), the canonical commutation relation is the
fundamental relation between canonical conjugate quantities (quantities
which are related by definition such that one is the Fourier transform of
another). For example,
[x,p] = ihbar
between the position operator x and momentum operator p.
This relation is attributed to Max Born (1925),[1] who called it a "quantum
condition" serving as a postulate of th... 阅读全帖 |
|
b********n
发帖数: 38600 | 34 AngloZionist: Short primer for the newcomers
http://vineyardsaker.blogspot.com/2014/09/anglozionist-short-primer-for-newcomers.html
Why do I speak of "AngloZionists"? I got that question many times in the
past, so I will make a separate post about it to (hopefully) explain this
once and for all.
1) Anglo:
The USA in an Empire. With roughly 1000 overseas bases (depends on how you
count), a undeniably messianic ideology, a bigger defense offense budget
then the rest of the planet combined, 16+ s... 阅读全帖 |
|
发帖数: 1 | 35 【Filariasis
From Wikipedia, the free encyclopedia
Filariasis
Life cycle of Wuchereria bancrofti, a parasite that causes filariasis
Classification and external resources
Specialty Infectious disease
ICD-10 B74
ICD-9-CM 125.0-125.9
Patient UK Filariasis
MeSH D005368
[edit on Wikidata]
Filariasis is a parasitic disease caused by an infection with roundworms of
the Filarioidea type.[1] These are spread by blood-feeding black flies and
mosquitoes. This disease belongs to the group of d... 阅读全帖 |
|
发帖数: 1 | 36 12月27日 为什么我要替中国辩护
我要替中国辩护，并不是因为我是一个中国人，而是因为我知道中国就和这世界上绝大
数的国家一样，虽然有很多丑陋的现象，但是他们是受害者。就
象这个犯罪集团里很多的人一样，他们来自各种种族，他们可能充当了工具，但他们不
是制造这一切，谋划这一切的人。虽然经常会暴露中国产品出现问题。但要知道中国是
世界工厂，他们只是打工者，他们只是按照各种雇主提供的配方来生产，他们并不知道
他们会产生怎样的后果。或者这些工人知道后果，但他们只是奴隶，他们又如何去改变
这一切？ 所以，当我的调查不断往前推进的时候，不可避免地会涉及各国的企业，但
这并不表明是针对这个国家或这个国家的人民，而是针对一种社会现实和丑陋现象。就
拿菲律宾来说，菲律宾是一个犯罪猖獗的国家，有很多犯罪分子，但是菲律宾人民却是
这个集团的受害者，他们／她们被绑架，沦为了牺牲品，人体实验对象。一个日本人，
强奸上千名菲律宾女孩，却没有受到惩罚。以前我也提到过，有20个国家的名单，这20
个国家的人民其实都是受害者。现在他们把矛头对准中国，或许仅仅是因为我揭示了他
们图害世界人民的内幕，而我是一个中国人的缘... 阅读全帖 |
|
发帖数: 1 | 37 12月27日 为什么我要替中国辩护
我要替中国辩护，并不是因为我是一个中国人，而是因为我知道中国就和这世界上绝大
数的国家一样，虽然有很多丑陋的现象，但是他们是受害者。就
象这个犯罪集团里很多的人一样，他们来自各种种族，他们可能充当了工具，但他们不
是制造这一切，谋划这一切的人。虽然经常会暴露中国产品出现问题。但要知道中国是
世界工厂，他们只是打工者，他们只是按照各种雇主提供的配方来生产，他们并不知道
他们会产生怎样的后果。或者这些工人知道后果，但他们只是奴隶，他们又如何去改变
这一切？ 所以，当我的调查不断往前推进的时候，不可避免地会涉及各国的企业，但
这并不表明是针对这个国家或这个国家的人民，而是针对一种社会现实和丑陋现象。就
拿菲律宾来说，菲律宾是一个犯罪猖獗的国家，有很多犯罪分子，但是菲律宾人民却是
这个集团的受害者，他们／她们被绑架，沦为了牺牲品，人体实验对象。一个日本人，
强奸上千名菲律宾女孩，却没有受到惩罚。以前我也提到过，有20个国家的名单，这20
个国家的人民其实都是受害者。现在他们把矛头对准中国，或许仅仅是因为我揭示了他
们图害世界人民的内幕，而我是一个中国人的缘... 阅读全帖 |
|
发帖数: 1 | 38 12月28日 仔细阅读以下文章
或许这些文章可以告诉你们孩子被伤害病毒的答案。
Astellas Pharma 应该和这些人体实验有莫大的关系！
Founded 2005; 11 years ago
Headquarters 2-5-1, Nihonbashi-Honcho, Chūō-ku, Tokyo 103-8411, Japan
Key people Yoshihiko Katakana
(President and CEO)
Filariasis
From Wikipedia, the free encyclopedia
Filariasis
Life cycle of Wuchereria bancrofti, a parasite that causes filariasis
Classification and external resources
Specialty Infectious disease
ICD-10 B74
ICD-9-CM 125.0-125.9
Patient UK Filariasis
MeSH ... 阅读全帖 |
|
C*I
发帖数: 4736 | 39 连美国人现在都在惊呼印度的弹道导弹发展，都在为北京和上海被攻击担心，狗日的共
产党还给人拼命送钱搞基建，开银行？
麻痹的，脑子连猪狗都不如。 狗日的外交部那帮装逼的样子，没有一个好东西！
你看看，人家洋人在说什么吧：
http://www.huffingtonpost.com/eric-margolis/india-missile-test_b_1441128.html
India Missile Test: Wake Up, Washington!
By Eric Margolis
India just launched what the media called its “first intercontinental
ballistic missile.” India did indeed launch a new, 5,000 km-range Agni-V
missile that can deliver a nuclear warhead to Beijing and Shanghai.
Previously, India’s 3,500-km Agni-III did no... 阅读全帖 |
|
m**********e
发帖数: 12525 | 40 chinatown的水管工先搞个物理phd再来瞎屄屄，ok?
it is based on two postulates:
2.The speed of light in a vacuum is the same for all observers, regardless
of the motion of the light source.
https://en.wikipedia.org/wiki/Special_relativity |
|
z****g
发帖数: 3509 | 41 这是仅次于缺乏美感的小黄人第二大问题
https://en.wikipedia.org/wiki/The_Moral_Basis_of_a_Backward_Society
原书虽然是说意大利村民的，但说小黄人更贴切。小黄人是在上亿人口尺度的社会复制
了这种现象：
He observed a self-interested, family centric society which sacrificed the
public good for the sake of nepotism and the immediate family. Banfield as
an American was witnessing what was to become infamous as the "Mafia" or
families (in Sicily and other parts of Southern Italy) that cared only for
its own "members" at the expense of their fellow citizens. Banfield
p... 阅读全帖 |
|
x****6
发帖数: 4339 | 42 这是UCSF的合成生物学大佬wendell lim的proposal abstract.
请你睁大你的狗眼认真看看，哪怕只是标题也好
http://grantome.com/grant/NIH/R01-CA196277-01
Redesigning the T cell: Using Synthetic Biology to Engineer Therapeutic
Cells
Lim, Wendell A.
University of California San Francisco, San Francisco, CA, United States
Engineered cells have the potential to serve as powerful """"""""smart""""""
"" therapeutic agents, but we lack a systematic framework for engineering
cells to optimize their efficacy and minimize their adverse effect... 阅读全帖 |
|
n********g
发帖数: 6504 | 43 嗯，在1891年，加州工程师估计有4亿吨岩石从内陆高山被水裂然后沉积在下游河床上。
以下出自维基：
There were decades of minor earthquakes – more than at any other time in
the historical record for northern California – before the 1906 quake.
Widely interpreted previously as precursory activity to the 1906 earthquake,
they have been found to have a strong seasonal pattern and have been
postulated to be due to large seasonal sediment loads in coastal bays that
overlie faults as a result of the erosion caused by hydraulic mining in the
later yea... 阅读全帖 |
|
w********2
发帖数: 632 | 44 HGT involving prokaryotes
Many studies support the significant role of HGT in the evolution of
prokaryotes (Gogarten et al., 2002; Jain et al., 2003; Kunin and Ouzounis,
2003). The principle sources of novel genes are provided by other prokary-
otes, viruses and MGEs (Fig. 1). In particular, plasmids and composite
mobile elements contribute significantly to HGT between prokaryotes. In some
cases, composite elements and megaplasmids are composed of more than 100
genes (Bentley et al., 2002; Hacke... 阅读全帖 |
|
w********2
发帖数: 632 | 45 Cellular competency (natural transformation) refers to the active uptake of
free (extracellular) DNA across the cell wall and cell membrane(s) using
cellular machinery designed to facilitate the process (Dubnau, 1999; Lorenz
and Wackernagel, 1994). It is a highly regulated physio- logical state that
is often sensitive to environmental cues (Molin and Tolker-Nielsen, 2003).
When the DNA is her- itably incorporated into the recipient’s genome, the
pro- cess is known as transformation.
Bacterial co... 阅读全帖 |
|
u***r
发帖数: 4825 | 46 https://zhuanlan.zhihu.com/p/103783584
导读
疫情暴发时，增强疫情信息的透明度、可信度和及时性，加强国内和国际合作，利用各
种资源来鉴别病原体，让国际社会共同参与——这是SARS给我们留下的宝贵教训。
2019年末，武汉暴发“不明原因肺炎”。2020年1月9日，以中国疾控中心徐建国院士为
首的团队向公众发布消息称，在武汉的不明原因肺炎患者体内分离并检测到了一种新型
冠状病毒。发稿时的最新数据显示，截至1月19日22时，武汉累计报告新型冠状病毒感
染的肺炎病例198例，其中治愈25例，死亡3例。
经历过2003年非典疫情的人对冠状病毒不会陌生。那场可怕传染病的病原体正是一种冠
状病毒。如今，与SARS病毒相近的新型冠状病毒在中国大陆卷土重来，我们应该怎样应
对？本世纪以来，高致病性冠状病毒在人类社会已出现三次暴发（SARS、MERS以及本次
不明肺炎），过往的防疫战斗能带给我们什么样的启示，我们该怎样渡过眼前的疫情？
“疾如风，徐如林，侵掠如火，不动如山。”军事家孙子这样描述一支强大的军队。
疾和病组成疾病。疾，在汉语中也有快的意思。用“疾如风”“侵... 阅读全帖 |
|
c******n
发帖数: 5697 | 47 现在Koch's postulate 对冠状病毒还没有成立
最有的可能，冠状病毒在全世界存在很久，现在你专门测他，就测出来了
但是这些人可能本来就应该死于其他疾病，包括流感 |
|
a********l
发帖数: 39524 | 48 很有研究啊。这难道又是美国人捣乱？奶奶的。
reported
_r=1&scp=1&sq=china%202006%20crash%20air%20force%20kahn&st=cse
before
postulated
at |
|
t***h
发帖数: 40 | 49 IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
SECOND APPELATE DISTRICT
DIVISION TWO
Wan (aka Winnie) Tin ) Case #: B222712
)
Plaintiff and Respondent, ) (Sup. Ct. No. CK71139)
v. )
Los Angeles County Superior Court )
)
In re Joshua Tin )
)
----------------------------------------------------------------)
APPELLANT’S... 阅读全帖 |
|
g********d
发帖数: 4174 | 50 Same-sex marriage: The tortuous road to the Supreme Court
The Marriage Law Foundation’s William Duncan describes obstacles to U.S.
Supreme Court review of the constitutional claim for same-sex marriage and
explores the implications of the way these cases seem likely to be presented
to the Court.
The following essay for our same-sex marriage symposium is by William Duncan
, the director of the Marriage Law Foundation. He has represented amici in
Perry v. Schwarzenegger and Commonwealth v. U.S. De... 阅读全帖 |
|
