j*****y
发帖数: 1916 | 1 Science. 2013 Aug 30;341(6149):976-80. doi: 10.1126/science.1238041.
Poverty impedes cognitive function.
Mani A1, Mullainathan S, Shafir E, Zhao J.
Author information
Abstract
The poor often behave in less capable ways, which can further perpetuate
poverty. We hypothesize that poverty directly impedes cognitive function and
present two studies that test this hypothesis. First, we experimentally
induced thoughts about finances and found that this reduces cognitive
performance among poor but not i... 阅读全帖 |
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m**d
发帖数: 21441 | 3 【 以下文字转载自 Military 讨论区 】
发信人: wayofflying (小破熊), 信区: Military
标 题: 人类第一台真空能发动机即将在中国攻关成功
发信站: BBS 未名空间站 (Sat May 14 22:28:25 2011, 美东)
高歌，现任北京航空航天大学能源动力学院动力工程及工程热物理学科一级责任教授，
航空发动机气动热力国防重点实验室副主任，长期从事动力工程、工程热物理及流体力
学领域的教学与科研工作，并在基础科研和多学科的应用技术领域取得了一系列国际领
先水平的创新性科研成果。
他在1984年发明的"沙丘驻涡火焰稳定器"，获国家发明一等奖，钱学森同志称之为"一
项长中国人志气的重要发明"。该成果广泛应用于我国多种军用航空发动机中，取得了
数以亿元计的经济效益，至今仍保有先进水平。本刊记者于今年10月采访了高歌教授，
了解到了他近期从事的一些前沿科研工作的最新进展，尤其是他对龙卷风的研究及其工
程应用价值，让人耳目一新。
高歌教授在采访中提到，传统的航空发动机技术虽然还在不停地改进提高之中，但
受到原理和材料工艺上的限制，已经逐渐逼近了性能发... 阅读全帖 |
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P*****t
发帖数: 4978 | 4 Why Is The Penis Shaped Like That? (EXCERPT)
Excerpted from "WHY IS THE PENIS SHAPED LIKE THAT? …And Other Reflections
on Being Human" by Jesse Bering. Published July 7th by Scientific American/
Farrar, Straus and Giroux, LLC. Copyright © 2012 by Jesse Bering. All
rights reserved.
If you’ve ever had a good long look at the human phallus, whether yours or
someone else’s, you’ve probably scratched your head over its peculiar
shape.
Let’s face it: it’s not the most intuitively configured appen... 阅读全帖 |
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s**i
发帖数: 4448 | 5 I/our team/my project/our lab was the first to discover/achieve/report/
elucidate/establish/demonstrate/prove/uncover/resolve/delineate/hypothesize/
propose...sth in the entire/whole field of .../world/US... |
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k***r
发帖数: 13724 | 6 你问反了，是旧大陆的猴子变异出的特性而已，有优势可以从绿叶中找出红果子，还能
分辨出发情的母猴子。
It is generally assumed that the ancestors of all monkeys were prosimians
who were monochromatic or dichromatic. The Old and New World monkeys became
separated 30-40 million years ago and have been traveling down their own
evolutionary tracks since then. It is likely that mutations in the X
chromosome gene or genes that provide the ability to see red colors occurred
after this separation. Given that trichromacy occurs in both the New and
Old W... 阅读全帖 |
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H********g
发帖数: 43926 | 7 Outburst flood at 1920 BCE supports historicity of China’s Great Flood and
the Xia dynasty
Abstract
China’s historiographical traditions tell of the successful control of a
Great Flood leading to the establishment of the Xia dynasty and the
beginning of civilization. However, the historicity of the flood and Xia
remain controversial. Here, we reconstruct an earthquake-induced landslide
dam outburst flood on the Yellow River about 1920 BCE that ranks as one of
the largest freshwater floods of the... 阅读全帖 |
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j******l
发帖数: 2790 | 8 通俗的说simulation hypothesis的基本意思是我们其实都是器人。作为一种朴素的创
作灵感，simulation hypothesis在科幻作品中屡见不鲜。作为一种朴素的哲学思想，
simulation hypothesis是怀疑论的一种表达形式。庄子的庄周梦蝶，我思故我在的法
国唯心主义哲学家数学家笛卡尔René Descartes所认为的“人通过意识感知世界，世
界万物都是间接被感知的，因此外部世界有可能是真实的也有可能是虚假的“都是怀疑
论的先驱。严谨的去讨论simulation hypothesis会让我不寒而栗，但是这些讨论有理
有据令人信服，比如牛津大学的哲学家Nick Bostrom提出了一个trilemma作为
simulation argument：如下三条必有一条为真（我随便翻译的，不准确，英文版的看
Reference [1, 3]），
1. 在所有宇宙文明里面，发展到可以完美模拟物理世界的文明的比例（相对于所有文
明）几乎为零
2. 在所有有能力完美模拟物理世界的高级文明里面，有兴趣去做这种模拟的文明的比
例（相对于所有这种高级文明）几乎为零... 阅读全帖 |
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v*******i
发帖数: 19 | 9 http://darwin.nap.edu/books/0309064066/html/28.html
Is evolution a fact or a theory?
The theory of evolution explains how life on Earth has changed. In scientific
terms, "theory" does not mean "guess" or "hunch" as it does in everyday usage.
Scientific theories are explanations of natural phenomena built up logically
from testable observations and hypotheses. Biological evolution is the best
scientific explanation we have for the enormous range of observations about
the living world.
Scientists |
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a*********7
发帖数: 30080 | 10 文中提到的Forbien Archeolgy(Forbidden Archeology)一书, 可参见
http://en.wikipedia.org/wiki/Michael_Cremo#Forbidden_Archeology
"Forbidden Archeology has been criticized for failing to test simpler
hypotheses before proceeding to propose more complex ones (a violation of
Occam's razor) and for relying heavily on outdated evidence (often from the
19th and early 20th century).[15] Tom Morrow of the National Center for
Science Education noted that Cremo's "specimens no longer exist" and dubbed
the work pseudos |
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B********e
发帖数: 19317 | 11 http://evolution.berkeley.edu/evolibrary/article/side_0_0/usingparsimony_01
Using parsimony
After studying some major vertebrate lineages and limiting the data to
characters that are likely homologous, you might end up with the following
evidence (note that there are many vertebrate lineages and many characters
excluded from this example for the sake of simplicity):
From studying fossils and lineages closely related to the vertebrate clade,
we hypothesize that the ancestor of vertebrates had non |
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B********e
发帖数: 19317 | 12 Using the tree for classification
Biologists use phylogenetic trees for many purposes, including:
* Testing hypotheses about evolution
* Learning about the characteristics of extinct species and ancestral
lineages
* Classifying organisms
Using phylogenies as a basis for classification is a relatively new
development in biology.
Most of us are accustomed to the Linnaean system of classification that
assigns every organism a kingdom, phylum, class, order, family, genus, and
species, wh |
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B********e
发帖数: 19317 | 13 这个小side trip是简要的讲人类演化的。
our understanding of this area is moving forward rapidly, as new evidence
emerges and hypotheses are tested, confirmed, discarded, or modified.
这里再次提点到，演化的理论，树形结构的分支，如何对物种，特别是近亲物种进行分
类，如何分析突变的转折点，这些都是经过反复的比对校正的，并不是单独依靠某个生
物大牛个人的观点看法的。
在这个小节的讲义里面第一页，树形结构上面仅仅给出了chimp和homo的分支。但是从
第二页里面，我们可以看到，根据现在能掌握的化石资料，其实homo里面还分化出了不
同的类别。
我不知道这些类别到底在生理结构和DNA组成上面的分离有多大，但是我的感觉是虽然
这些不同的homo有各自的名称，但是应该没有产生有足够影响力的分离，所以没有在树
形结构上作为独立的分支被列出。
我个人感觉，会不会好比今天的不同人种，虽然各自有各自一定的生理特征，也被分为
黄种人，白种人，黑种人这样的分 |
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B********e
发帖数: 19317 | 14 http://evolution.berkeley.edu/evolibrary/article/side_0_0/origsoflife_07
Origins and experimental evidence
Experiments can help scientists figure out how the molecules involved in the
RNA world arose. These experiments serve as "proofs of concept" for
hypotheses about steps in the origin of life — in other words, if a
particular chemical reaction happens in a modern lab under conditions
similar to those on early Earth, the same reaction could have happened on
early Earth and could have played a |
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t*******d
发帖数: 2570 | 15 我来说两句吧，这个脑健康网站的数据说的是个相关性的数据，相关性的数据不能用来
证明因果性。就是说不能只用它来说明因为摩门教的教导导致了抑郁症的增加。Sparty
列出的文献是研究摩门教信仰是不是跟抑郁症有关的。但是具体结论好像还不是统一的
结论。比如这篇文章并没有把摩门的信仰跟抑郁症联系起来。
Risk factors and the prevalence of depression in Mormon women
Purchase
David C. Spendlovea, Dee W. Westa and William M. Stanishb
a Department of Family and Community Medicine, University of Utah School of
Medicine, 50 North Medical Drive, Salt Lake City, UT 84132, U.S.A.
b SAS Institute, Inc., Box 8000, Cary, NC 27511, U.S.A.
Available online 20 June... 阅读全帖 |
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R******d
发帖数: 5739 | 16
了。
before you comment on science, you should at least have some education in
science. otherwise it is foolish to comment, and it might be foolish for me
to answer you if you don't read more.
-------------------
进化论者基本错误就是其假设，一切假设都是根据人自己的思维来考虑的。如果按照自
然界逻辑来考虑的话，那么试问
1 无机物为何一定要变有机物？事实是有机物最后腐败分解都变成了无机物，有机物也
无法在太阳或其他星球生存。有机物无法适应恶劣环境且很脆弱，为何进化论假设反了。
----------------------------
inorganic or organic are just two categories of morelecules categorized by
chemists. categorizing them is not relevant to w... 阅读全帖 |
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w**********2
发帖数: 764 | 17 So, The King Jame's Bible is full of "facts", "theories", "hypotheses", "
conjectures"?
I think this was the only matter someone here cared so dearly.
...
argument over. - don't care to reply. Please, I am not interested in that.
--- signing off. |
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c*******t
发帖数: 144 | 18 Quite a page turner, and fooled me very successfully. I did not figure
out Teabing had to be the bad guy until Remy took him as hostage... and
thought Fache was a secret member of Opus Dei all along.
The description of the Pagan/Christian history was also very intresting.
Unfortunately there were so many unfounded hypotheses in the book, that
one dare not trust even the ones that looked authentic...
second |
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i****l
发帖数: 579 | 19 发信人: slli (老良), 信区: ScienceFiction
标 题: Amis的定义
发信站: 灌水之家 (Wed Apr 11 00:22:12 2001), 转信
Kingsley Amis
Science Fiction is that class of prose narrative treating of
a
situation
that could not arise in the world we know, but which is
hypothesized
on
the basis of some innovation in science or technology, or
pseudo-technology, whether human or extra-terresial in
origin.
New Maps Of Hell (London, 1960)
金斯利·艾米斯
科幻小说是这样一种散文，它叙述的情形无法出现在我们所知的世界
，而是基于科
学、技术或者伪技术发展创新的假设——不管其起源是人类的还是外
星生物的。
地狱新景（伦敦，1960）
注 |
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v*******e
发帖数: 1715 | 20
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^1
^^^^^^^^^^^^^2
^^^^^^^^^^^^3
1.可以.任何定义都可以从属性区分,比如颜色属性,A是红,B是黄,AB就可以区分,
但也可以从有无颜色区分.比如水是无色.木头是黄色.
2.不知道您指那个HYPOTHESE..我好象没提什么HPO
3,跑题了,我从来没讨论是否diffrent.而只是说能否定位人类.different如果有的话,
尽管有好了.
4,跑题了,这里谈的是人类的定位,您谈一个人干吗.--提醒一下,我是在谈:如果没有神性,
人性无法定位么.--是这个问题. |
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b*****l
发帖数: 9499 | 21 ft，和教堂神圣之类的有啥关系？巴赫这几套又不是趴在神的脚下自命卑微辗转哀嚎的
那种。莫扎特的安魂曲才是。
巴赫的色彩太丰富了吧。是，你的确可以说，巴赫的人文关怀不够；巴赫探索的，是终
极之美；他的 hypotheses 就是：宇宙是有秩序，有规律的，这种秩序和规律，是能够
被人类所认知和欣赏的；美产生于运动中的规律和秩序。这也正是做 sciense 的基本
出发点。
教堂啊，神学啊，都是一个符号，而已。我倒觉得，《中庸》里说的这段，挺适合巴赫
的十二平均律的一些曲子：
致中和，天地位焉，万物育焉。
听巴赫，经常是这样的场景：银河，星云，星球错落运行，生灭，彼此不同，却如此精
确地和谐；四季兴荣衰败在眼前变化，每个场景都历历在目：蓝天下阳光中的一片亮黄
的叶子，初春冰雪澌融汇成山涧，夏日浓荫下的清风，冬天白茫茫的雪地上的一行脚印
消失在远方，然后，这些场景快速更替，千年如一瞬；一滴水；旁观芸芸众生的生老病
死，帝国兴衰，沧海桑田，心里不带一丝的悲喜；水面跳跃的曲线和倒影。。。
面，
期的
阳光 |
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w*********r
发帖数: 3382 | 22 it is a hierarchy of confidence running downhill from truth to theory to
hypothesis to guess to bullshit, determined by the level of "facts" it
incorporates.
but of course some just choose to ignore fact and have confidence in
bullshit, you just have to live with the fact that some people are just
either bigoted or plain stupid.
i won't call evolution an indisputable truth but it is a theory arises from
repeated observation and testing and incorporates facts, laws, predictions,
and tested hypoth... 阅读全帖 |
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w******d
发帖数: 1301 | 23 好吧， 既然你觉得我的总结不准确，我道歉先。我们来一段一段探讨你的话。
it is a hierarchy of confidence running downhill from truth to theory to
hypothesis to guess to bullshit, determined by the level of "facts" it
incorporates.
你觉得事实就可以作为证据来判断什么是真理。 在人是全知的情况下， 你的论断是
对的。 在人被时空限制住不能全知的情况下，所观测的事实就可能不是真的事实。
所得到的推断就可能是谬误了。 所以圣经说人吃了智慧果就有了原罪， 我觉得这是
其中一部分原因，因为人并不能像神一样全知，分别善恶就会出错。
but of course some just choose to ignore fact and have confidence in
bullshit, you just have to live with the fact that some people are just
either bigoted or ... 阅读全帖 |
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S*********g
发帖数: 24893 | 24 http://www.prisoners.com/relcrime.html
宗教对犯罪率的影响
更加信仰基督的地方有更多的社会弊病和犯罪。这是格雷戈里。保罗在学术杂志《宗教
与社会》上发表的初步结论，这个杂志是内布拉斯加州一所教会学校的学报。
http://moses.creighton.edu/JRS/2005/2005-11.html
研究表明，基督教统治的美国南部和中西部地区，社会弊端和犯罪更严重，谋杀，性病
，死亡率更高。这项研究还表明，美国的犯罪率和基督徒比例，比其他发达世界国家都
高得多。
无法回避的现实是，基督教的教条更合适一个病态的社会。宗教狂热分子和极端主义比
毒品危害更大。
理性的人认识到基督教神话的荒谬可怜，而基督徒，尤其是福音派，或原教旨主义者，
不过是一些伪君子，用宗教作为武器来贬低他人。
格雷戈里。保罗的研究首次量化了基督教教义产生的社会效果。不只是基督教，一切狂
热的邪教都可能会有类似的邪恶效果。
当然，天主教会花了几百年压迫陷入贫困和苦难的老百姓。穆斯林有同样的呼吁
：暴力，复仇，排斥和压迫。
理智的人会奇怪宗教神话的诞生。
在美国，宗教=残酷。
Cr... 阅读全帖 |
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l**********t
发帖数: 5754 | 25 so the scientists have hypothesized/empirically demonstrated the molecular
mechanisms/factors that could lead to certain nerological/psycological
behavior shared by 宗教体验.
A natural argument from Science's perspective, could these 宗教体验 (
nerological/psycological/behaviral) actually caused by a totall different
set of factors/mechanisms?
More importantly, these scientific discoveries (IMHO, and based on personal
experience) may simply be a paritial reveal of the amazing mechanics of God'
s creatio... 阅读全帖 |
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l*****a
发帖数: 38403 | 26 Religious Experiences Shrink Part of the Brain
A study links life-changing religious experiences, like being
born
again,
with atrophy in the hippocampus
By Andrew Newberg | May 31, 2011 | 38
The article, “Religious factors and hippocampal atrophy in late life,”
by Amy Owen and colleagues at Duke University represents an important
advance in our growing understanding of the relationship between the
brain and religion. The study, published March 30 in PLoS One, showed
greater atrophy in the hippo... 阅读全帖 |
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h*o
发帖数: 1035 | 27 http://www.reformed.org/documents/index.html?mainframe=http://w
芝加哥圣经无误宣言
THE CHICAGO STATEMENT
ON BIBLICAL INERRANCY
Preface
The authority of Scripture is a key issue for the Christian Church in this
and every age. Those who profess faith in Jesus Christ as Lord and Savior
are called to show the reality of their discipleship by humbly and
faithfully obeying God's written Word. To Stray from Scripture in faith or
conduct is disloyalty to our Master. Recognition of the total truth and
trustworthi... 阅读全帖 |
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s*y
发帖数: 933 | 28 Sorry, the question you asked is wrong. Evolution is not suppose to explain
the origin of DNA. You should re-phrase your question. Perhaps you are
asking about the origin of life.
Btw, if you are proposing Creationism as an explaination, are you willing to
subject it to the same critique you have for the theory of Evolution?
Actually, I'd just settle for the same critique all other scientific
hypotheses face when they are proposed.
evolution?
not |
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s*y
发帖数: 933 | 29 Sorry, the question you asked is wrong. Evolution is not suppose to explain
the origin of DNA. You should re-phrase your question. Perhaps you are
asking about the origin of life.
Btw, if you are proposing Creationism as an explaination, are you willing to
subject it to the same critique you have for the theory of Evolution?
Actually, I'd just settle for the same critique all other scientific
hypotheses face when they are proposed.
evolution?
not |
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f*****h
发帖数: 228 | 30 of course, but the basic proposition " origin of species through natural
selection" is a fact that are accepted by virtually all scientists
And non of the unproven hypothesizes contradicts this |
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l*****a
发帖数: 38403 | 31 Rationalization (making excuses)
From Wikipedia, the free encyclopedia
In psychology and logic, rationalization (also known as making excuses）is
an unconscious defense mechanism in which perceived controversial behaviors
or feelings are logically justified and explained in a rational or logical
manner in order to avoid any true explanation, and are made consciously
tolerable – or even admirable and superior – by plausible means.[2]
Rationalization encourages irrational or unacceptable behavior, ... 阅读全帖 |
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E*****m
发帖数: 25615 | 32 http://www.vancouversun.com/business/Religious+Canadians+bend+m
Religious Canadians bend morals for the almighty buck: study
BY MISTY HARRIS, POSTMEDIA NEWS OCTOBER 23, 2013
Religious Canadians bend morals for the almighty buck: study
A new Canadian study has found that the more importance people place on
religion, the more likely they are to lie for financial gain.
Photograph by: Fotolia/File , Postmedia News
Do unto others — so long as you recognize them from church.
Incongruous as it sounds, ... 阅读全帖 |
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s*********t
发帖数: 4253 | 33 Scientific hypotheses about the origins of life can be divided into a number
of categories. Many approaches investigate how self-replicating molecules
or their components came into existence. On the assumption that life
originated spontaneously on Earth,
http://en.wikipedia.org/wiki/Abiogenesis
这是很含糊的解释，表示他们更本不知道答案。
1）Life originated spontaneously on Earth
我问：a）How spontaneously？How it works?
我问：b) Can we experiment & replicate this spontaneous
theory in the lab?
我问： c) If all ... 阅读全帖 |
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J*******g
发帖数: 8775 | 34 能用studybible很好啊。NET bible对这个问题上做了些解释。而且我认为这不算什么
“严重错误”吧。似乎不怎么影响人们对圣经的理解。
https://net.bible.org/#!bible/Mark+2:23
52 tn A decision about the proper translation of this Greek phrase (ἐ
πὶ ᾿Αβιαθὰρ ἀρχιερέως, ejpi
Abiaqar ajrcierew") is very difficult for a number of reasons. The most
natural translation of the phrase is “when Abiathar was high priest,” but
this is problematic because Abiathar was not the high priest when David
entered the temple and ate the ... 阅读全帖 |
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t*******r
发帖数: 2940 | 35 看到科学家宣称"completely solved baring details"确实让人诧异，大概是想糊弄没
有一点科学常识的人。
Scientists continue to study various aspects of evolution by forming and
testing hypotheses, constructing scientific theories, using observational
data, and performing experiments in both the field and the laboratory.
Biologists agree that descent with modification is one of the most reliably
established facts in science. |
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l*****a
发帖数: 38403 | 36 Many people with religious convictions feel that their faith is rock solid.
But a new study finds that prompting people to engage in analytical thinking
can cause their religious beliefs to waver, if only a little. Researchers
say the findings have potentially significant implications for understanding
the cognitive underpinnings of religion.
Psychologists often carve thinking into two broad categories: intuitive
thinking, which is fast and effortless (instantly knowing whether someone is
angry ... 阅读全帖 |
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b*****n
发帖数: 4976 | 37
如果你真的想讨论一下“原则”，请仔细的袅爸檐z解道金斯的《自私的基因》。
===========================================
道金斯在他书中的序言中, 声明了:
(1) "that the book contains nothing new"
(暗示了集人既大成, 左抄右抄前人地既研究?)
(2) that it is “unabashed advocacy”,(属吹水?)
(in other words a mere personal opinion) and
that it contains no hypotheses that are testable.
的确, 他书中的观点, 真的不是出自实验数据,
难得就是有你这种把伪科学当了是学术研究.
(真系烟包上印明「吸烟危害健康」, 仍有不少人买来抽) |
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o***1
发帖数: 592 | 38 Is the Big Bang in the Bible?
By Karl W. Giberson March 23, 2014 12:00 AM The Daily Beast
The “Big Bang” theory of the origin of the universe got a big boost this
week when scientists reported the discovery of 14-billion-year-old echoes of
the universe’s first moments—the first proof of an expanding universe,
and the last piece of Einstein’s general theory of relativity.
Major discovery bolsters Big Bang theory of universe AFP
5 Reasons to Care About New Big Bang Inflation Theory Discovery SPACE... 阅读全帖 |
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R********n
发帖数: 657 | 39 This Physicist Has A Groundbreaking Idea About Why Life Exists
Read more: http://www.quantamagazine.org/20140122-a-new-physics-theory-of-life/#ixzz3M5gC9S4N
Jeremy England, a 31-year-old physicist at MIT, thinks he has found the
underlying physics driving the origin and evolution of life
Popular hypotheses credit a primordial soup, a bolt of lightning, and a
colossal stroke of luck.
But if a provocative new theory is correct, luck may have little to do with
it. Instead, according to the physicis... 阅读全帖 |
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S**U
发帖数: 7025 | 40 http://www.theguardian.com/commentisfree/belief/2012/sep/24/kar
Marxism, Popper claims, is analogous to the psychological theories of Adler
and pseudo-sciences such as astrology. His attack upon the ideology became
two-pronged: Marxism principally consisted of unfalsifiable claims, and it
was a historicism. It could not, therefore, be described as scientific.
What do we mean by "scientific", in this instance? Marx claimed that his
system of political thought was predictive and, to an extent, thi... 阅读全帖 |
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W**N
发帖数: 1037 | 41 不是Popper写的。没有批"historical materialism",标题是政治学不是科学。全文如
下。要是读标题 “Karl Popper, the enemy of certainty”， 不知道Poper他如何看
待三乘之说呢？：）
［题目］Karl Popper, the enemy of certainty, part 3: rejecting politics as
science
［作者］Liz Williams
[来源］ http://www.theguardian.com/commentisfree/belief/2012/sep/24/karl-popper-politics-as-science
Attempts to present political systems as scientific are increasingly
regarded as old-fashioned: the "common sense" view suggests that politics is
not scientific, cannot be reduced to ... 阅读全帖 |
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S**U
发帖数: 7025 | 42 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 |
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C********g
发帖数: 9656 | 43 【 以下文字转载自 Military 讨论区 】
发信人: wayofflying (小破熊), 信区: Military
标 题: 人类第一台真空能发动机即将在中国攻关成功
发信站: BBS 未名空间站 (Sat May 14 22:28:25 2011, 美东)
高歌，现任北京航空航天大学能源动力学院动力工程及工程热物理学科一级责任教授，
航空发动机气动热力国防重点实验室副主任，长期从事动力工程、工程热物理及流体力
学领域的教学与科研工作，并在基础科研和多学科的应用技术领域取得了一系列国际领
先水平的创新性科研成果。
他在1984年发明的"沙丘驻涡火焰稳定器"，获国家发明一等奖，钱学森同志称之为"一
项长中国人志气的重要发明"。该成果广泛应用于我国多种军用航空发动机中，取得了
数以亿元计的经济效益，至今仍保有先进水平。本刊记者于今年10月采访了高歌教授，
了解到了他近期从事的一些前沿科研工作的最新进展，尤其是他对龙卷风的研究及其工
程应用价值，让人耳目一新。
高歌教授在采访中提到，传统的航空发动机技术虽然还在不停地改进提高之中，但
受到原理和材料工艺上的限制，已经逐渐逼近了性能发... 阅读全帖 |
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w********2
发帖数: 16371 | 44 【 以下文字转载自 Stock 讨论区 】
发信人: wavelets01 (信箱), 信区: Stock
标 题: Apple: Small iPad to Eliminate Android Differentiation, Says Piper
发信站: BBS 未名空间站 (Mon Jul 9 11:45:03 2012, 美东)
Mon, 09 Jul 2012 15:41:55
By Tiernan Ray
Piper Jaffray's Gene Munster this morning reiterates an Overweight rating on
shares of Apple (AAPL) and a $910 price target, writing that recent news
reports the company will produce a smaller iPad by the end of this year are
different from the 2013 introduction he'd been expecting, bu... 阅读全帖 |
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m****s
发帖数: 402 | 45 Sam Roweis, NYU Professor, Jumps To Death From Greenwich Village Apartment
NYU professor Sam Roweis jumped to his death from his Greenwich Village apartment Tuesday, and friends and colleagues still cannot understand what could have driven him to such a point of desperation.
The highly-regarded computer science professor leaped from the 16th floor of his building after fighting with his wife over the care of their 15-month-old twins who were born prematurely and had been sick.
A psychotherapist ... 阅读全帖 |
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w********r
发帖数: 14958 | 46 牛顿最牛鼻不仅仅是因为他对数学和物理的研究成果。
牛顿最牛鼻其实更是因为他的philosophy: “hypothesis non fingo”. 意思是“
I contrive no hypotheses”，或者我不随便假设。
近代科学的局面就是牛顿亲手缔造的。 |
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w********r
发帖数: 14958 | 47 牛顿最牛鼻不仅仅是因为他对数学和物理的研究成果。
牛顿最牛鼻其实更是因为他的philosophy: “hypothesis non fingo”. 意思是“
I contrive no hypotheses”，或者我不随便假设。
近代科学的局面就是牛顿亲手缔造的。 |
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g*****l
发帖数: 424 | 48 【 以下文字转载自 DataSciences 讨论区 】
发信人: greatel (灵致), 信区: DataSciences
标 题: 数据科学之江湖兵器谱
发信站: BBS 未名空间站 (Sun Oct 9 16:57:10 2016, 美东)
【注】原发于微信公众号：data_wisdom
数据江湖，风起云涌。各路英豪，群雄逐鹿。
这是一个数据科学最好的时代，也是数据江湖最乱的时代。
那么在这么一个特殊的江湖里面浪，有什么兵器是值得我们去关注的呢？这篇文章列举
了一些常用方法（刀剑），并不涵盖工具与平台。就先让我们一起去看看这个排名不分
先后左右的兵器谱。
数据科学家Vincent Granville博士发表博文列举了数据科学家常用的45种技术。这是
个很适合初学者去逐个了解的列表。当然，这并不代表数据科学（统计学）的全部。虽
然他并没有提出自己的详细总结，但是有志于学习数据科学的同学不妨初步有个印象，
有不太熟悉的topic可以进一步去了解一下。另外我在后面也补充了我认为也值得学习
的领域，很多人都会在日常的数据实践中用到。多学有益于身心健康。
首先需要说明的是，这些技术... 阅读全帖 |
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r*****3
发帖数: 143 | 49 About This Book
Estimate market risk, form various portfolios, and estimate their variance-
covariance matrixes using real-world data
Explains many financial concepts and trading strategies with the help of
graphs
A step-by-step tutorial with many Python programs that will help you learn
how to apply Python to finance
Who This Book Is For
Python for Finance is perfect for graduate students, practitioners, and
application developers who wish to learn how to utilize Python to handle
their financia... 阅读全帖 |
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a*****g
发帖数: 19398 | 50 Deep Learning Isn’t a Dangerous Magic Genie. It’s Just Math
Deep learning is rapidly ‘eating’ artificial intelligence. But let’s not
mistake this ascendant form of artificial intelligence for anything more
than it really is. The famous author Arthur C. Clarke wrote, “Any
sufficiently advanced technology is indistinguishable from magic.” And deep
learning is certainly an advanced technology—it can identify objects and
faces in photos, recognize spoken words, translate from one language to
another... 阅读全帖 |
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