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全部话题 - 话题: trait
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c******o
发帖数: 1277
1
scala trait is similar to ruby mixin, and a little bit more complex than
java
interface
From:
http://www.scala-lang.org/old/node/126
Similar to interfaces in Java, traits are used to define object types by
specifying the signature of the supported methods. Unlike Java, Scala allows
traits to be partially implemented; i.e. it is possible to define default
implementations for some methods. In contrast to classes, traits may not
have constructor parameters.
important usage difference between trait ... 阅读全帖
X****i
发帖数: 1877
2
【 以下文字转载自 Military 讨论区 】
发信人: XiuShi (致力为花街散财,造福散户), 信区: Military
标 题: 观察的人多后,发现一个现象,姑且称其为"Trait Cluster"。
发信站: BBS 未名空间站 (Fri Oct 27 17:11:23 2017, 美东)
"Trait Cluster"这名词,貌似还没被用。
但觉得很适当,所以就算我的原创名词好了。
这概念的好处,就是改进对人判断和预测的效率。
判断和预测的本质,就是有误差,所以还必须验证。
另外,由于这概念的连贯性质,可以帮助减少遗漏。
它因为是Generalization,所以要考虑少数例外。
效率高是因为知道一个Trait,也知道其Cluster。
这就能提醒观察者也留意其它属于该Cluster的Trait。
例如,假设要设立一个和虚荣有关的TraitCluster#1:
虚荣的人往往也是嫉妒心强烈的,
所以
Cluster#1 = {虚荣,妒嫉心}
但由于妒忌心和自私也一般同时存在,于是
Cluster#1 = {虚荣,妒嫉心,自私}
由于妒嫉心强烈的男女往往会做伤天害理的是,... 阅读全帖
X****i
发帖数: 1877
3
"Trait Cluster"这名词,貌似还没被用。
但觉得很适当,所以就算我的原创名词好了。
这概念的好处,就是改进对人判断和预测的效率。
判断和预测的本质,就是有误差,所以还必须验证。
另外,由于这概念的连贯性质,可以帮助减少遗漏。
它因为是Generalization,所以要考虑少数例外。
效率高是因为知道一个Trait,也知道其Cluster。
这就能提醒观察者也留意其它属于该Cluster的Trait。
例如,假设要设立一个和虚荣有关的TraitCluster#1:
虚荣的人往往也是嫉妒心强烈的,
所以
Cluster#1 = {虚荣,妒嫉心}
但由于妒忌心和自私也一般同时存在,于是
Cluster#1 = {虚荣,妒嫉心,自私}
由于妒嫉心强烈的男女往往会做伤天害理的是,即狠,于是
Cluster#1 = {虚荣,妒忌心,自私,狠}
再举一例
Cluster#2 = {贱,。。。}
由于贱的人,往往也是愚蠢的,于是
Cluster#2 = {贱,愚蠢}
再进一步就是把以上的因素量化。
如何应用?
例如遇到一个极度虚荣的人,就得小心他/她
有其它属于Cluster#1 的特征... 阅读全帖
X****i
发帖数: 1877
4

也许你对自己的定义不对。例如狠,你那不是一般的定义。
因此,你的妒忌心定义也许也不是一般对妒忌心的定义。
此外,我已经说了,永远有少数的例外,你也可以是例外。
贱的意思,包括没必要的去讨好帮助对自己有敌意的对方。
定义的过程,会有联想,这有帮助建立TraitCluster的作用。
例如: {贱,愚蠢} 考虑充实些后,变成
{贱,愚蠢,怕强欺弱,无原则,无正义感}
这些 Trait 的相关性,除了量化,排列的次序可以依照Rank
正相关的成度越高,Rank越高,排列的次序也越近,越靠前。
另外每个 Trait 可以有其相对的认证步骤,
类似 Built-In procedure/function,补助确认。
当然,以上的概念,可以进一步的抽象化,应用到其它领域。
X****i
发帖数: 1877
5

Factor Analysis <> Trait Cluster
意思和应用面不一样吧。
另外,我讨厌学术界倾向故弄玄虚,用意思模糊的名词。
至少 “Trait Cluster”是显意,即 Self-Explanatory。
s********n
发帖数: 4346
6
来自主题: LES版 - most attractive traits
I am reading a book on love and relationship psychology.
It says the most attractive traits reported by both men and women are
1. Warmth
2. Consideration/sensitivity
3. Sense of humor.
It says the most important trait of a person is to make the other person
feel good about him/herself. People tend to like others who appreciate them, think they are beautiful and
attractive and respect them. In return, they are more open to love and become more loving.
Contrary to popular believe, women prefer pe... 阅读全帖
b********n
发帖数: 38600
7
"Trait Cluster"这名词,貌似还没被用。
无知才能无畏呀
google factor analysis

发帖数: 1
8
本版名媛都有什么跟“嫁不出去”相对应的trait cluster?
h**********8
发帖数: 267
9
What traits have you seen in work environments you are not fond of
还有:
What would you consider the area of your work/experience you need the most improvement in
谢谢
N****O
发帖数: 4202
10
来自主题: Medicine版 - Thalassemia trait?
I have high RBC, low MCV, low MCH, and high Bilirubin.Is this an indication
of thalassemia trait? What other tests would you recommend? Thank you!
c********e
发帖数: 496
11
来自主题: Medicine版 - Thalassemia trait?
I am curious how he explained the low MCV
can a normal Hb totally rule out trait?
N****O
发帖数: 4202
12
来自主题: Medicine版 - Thalassemia trait?
The doctor didn't explain anything about my MCV! It sounds like she was
unable to explain it but my normal hemoglobin tells her that I have nothing
to do with thalassemia!
I did some research on www.cooleysanemia.org and found out that Silent
Carrier causes no health problems because the lack of alpha protein is so
small that the hemoglobin functions normally.In addition, the website says:
for adults, if the MCV reading is less than 75 and you are not iron
deficient (my doctor said that I am not... 阅读全帖
j*******6
发帖数: 429
13
刚收到一封信,有关 my baby's newborn screening blood test results.
上面说:
Your baby has a variant hemoglobin trait.
this means that each red blood cell contains both normal hemoglobin and an
unusual hemoglobin.
大家有收到过这样的信么?是很严重的问题么?该怎么办?
l*r
发帖数: 79569
14
http://online.wsj.com/article/SB1000142405270230483070457749480
Completely light green tomatoes are preferred over unevenly colored tomatoes
because they allow workers to consistently identify when the fruit is ready
to be picked. The trait, which is a mutation, also inhibits a protein
called GLK2, which the plant uses to produce sugar, said Ms. Powell.
L**********t
发帖数: 58
15
来自主题: LES版 - most attractive traits

恩,我没有否定它数据统计的大多数,我只是想说参加统计的人未出说的出感性深层次
的需求。
温暖体贴敏感幽默,这些听起来都是理性思考的结果。
真的碰上喜欢的人,可能不是这样呢。
换句话说,你列的TRAITS与爱情关系不大。
p********7
发帖数: 110
16
a few of the traits that will tell you unequivocally that a guy is into you:
His actions match his words. He doesn’t just say he loves you or wants to
be with you because he thinks that’s
what you want to hear; it’s obvious by the way he behaves.
He introduces you to his friends and family within a reasonable amount of
time. This indicates that he’s
increasingly serious about making you part of his life.
His behavior is consistent. He isn’t into you one week and then distant the
next. His affect
r****t
发帖数: 10904
17
开个贴,看来 dynamic language places fears in people's heart,especially for
people getting used to static language development. Their concern is
legitimate and here in Python community there exist people sharing that sort
of concerns in app development.
Have u ever thought about the possibility that since dynamic language is
flexible enough such that it might evolves to accommodate and address such
concerns at least to some extent?
There's a module called "Traits" that provides a (enforced) type defin
j***o
发帖数: 40
18
来自主题: Psychology版 - Traits of a self-actualizing person (ZT)
The self help book lists the traits of a self-actualizing
person based on Maslow's theory, which I think is worth reading.
# They see reality, and knowing "the facts are friendly," they accept reality
more than most people. They see through phoniness, deception, and "games"--and
avoid them. They cope with problems, rather than avoid them.
# They accept themselves and others; thus, they can honestly self-disclose and
forgive others' shortcomings.
# They are spontaneous with their ideas, feelings
W******e
发帖数: 3319
19
1. Introduction
My interest in studying creativity was inspired by the frustrations that I
felt as a student, then as a professor. I wanted to know how I could
encourage creativity in myself, my students, and my colleagues.
Politicians, industrial managers, academic administrators, and other leaders
often say that innovation is critical to the future of civilization, our
country, their company, etc. But in practice, these same people often act as
if innovation is an evil that must be suppressed,... 阅读全帖
g******n
发帖数: 53185
20
来自主题: WaterWorld版 - 如何象男人
Trait #1: A real man is strong
A real man doesn't cry, doesn't moan, doesn't complain, doesn't get sick,
and doesn't need to go to the doctor every time he sneezes. A real man makes
decisions and lives with the consequences. A real man accepts
responsibility for his actions and his words. A real man is firm. If life is
a b*tch, a real man will slap it and move on.
A real man is macho; a real man is tough; a real man doesn't show emotions.
A real man is the backbone of his family and doesn't have... 阅读全帖
c******o
发帖数: 1277
21
来自主题: Programming版 - 想学FP最好不要从Scala开始
这个我也看了好几遍,不如书(functional programming in scala) 好懂
我觉得一般来说
functor/monad 最重要
然后看看monoid/foldable (这个最容易)
applicative/traversable,这个我到现在还不是那么懂。。。
arrow/comonad我就完全不懂了。。。
我前一段做的笔记:
trait Semigroup[A] {
def append(x: A, y: A): A
}
List(1,2,3,4).append(List(5)) = List(1,2,3,4,5)
trait Functor[T[_]]{
def map[A,B](ta:T[A])(f:A=>B):T[B]
}
map(List(1,2,3,4))(x=> x.toString) = List("1", "2", "3", "4")
simplest transform, like a foreach in someway
trait Applicative[T[_]] extends Functor[T]{
def unit[... 阅读全帖
b*******g
发帖数: 513
22
source?指的是原bib文件的代码吗?我的bib原文档放在三个bib文件里(难道这是前两
个citation空缺的原因?),如下:
bibfile1:
@ARTICLE{sax1923association,
author = {Sax, K.},
title = {The association of size differences with seed-coat pattern and
pigmentation
in Phaseolus vulgaris},
journal = {Genetics},
year = {1923},
volume = {8},
pages = {552},
}
@article{amos1990multivariate,
title={A multivariate method for detecting genetic linkage, with
application to a pedigree with an adverse lipoprotein phenotype.},
author={Amos,... 阅读全帖
M*********t
发帖数: 260
23
This is an interesting article. Would like to share with readers who are
looking for a Happy MArriage.
Happy New Year to every beautiful single!!! :)
Sustainable Love
The Happy Marriage Is the ‘Me’ Marriage
By TARA PARKER-POPE
Published: December 31, 2010
A lasting marriage does not always signal a happy marriage. Plenty of
miserable couples have stayed together for children, religion or other
practical reasons.
But for many couples, it’s just not enough to stay together. They want a
relationshi... 阅读全帖
t****t
发帖数: 6806
24
来自主题: Programming版 - C++中怎么传递std::hex这样的参数啊
these are io manipulators. they are actually function pointers. for example,
ostream::operator<< actually has following overloads:
/* template <...> class basic_ostream { */
basic_ostream& operator<<
(basic_ostream& (*pf)(basic_ostream&));
basic_ostream& operator<<
(basic_ios& (*pf)(basic_ios&));
basic_ostream& operator<<
(ios_base& (*pf)(ios_base&));
f**d
发帖数: 768
25
很有趣的研究
ScienceDaily (May 2, 2011) — People who look at the past through
rose-tinted glasses are happier than those who focus on negative past
experiences and regrets, according to a new study published in the
journal Personality and Individual Differences. The study helps
explain why personality has such a strong influence on a person's
happiness. The findings suggest that persons with certain personality
traits are happier than others because of the way they think about their
past, present and ... 阅读全帖
i*****s
发帖数: 4596
26
来自主题: Military版 - 东亚女胸小的原因找到了
http://www.nytimes.com/2013/02/15/science/studying-recent-human

East Asian Physical Traits Linked to 35,000-Year-Old Mutation
By NICHOLAS WADE
Published: February 14, 2013
Gaining a deep insight into human evolution, researchers have identified a
mutation in a critical human gene as the source of several distinctive
traits that make East Asians different from other races.
The traits — thicker hair shafts, more sweat glands, characteristically
identified teeth and smaller breasts — are the re... 阅读全帖
l******a
发帖数: 16364
27
☆─────────────────────────────────────☆
spectrum805 (spectrum805) 于 (Tue Sep 27 01:20:44 2011, 美东) 提到:
发信人: spectrum805 (spectrum805), 信区: SanDiego
标 题: Re: 加州政府未得人民同意, 通過了一項 SB48 法 律 (转载)
发信站: BBS 未名空间站 (Tue Sep 27 01:18:30 2011, 美东)
这段录像里提到麻省的父母听到老师给二年级的儿子念一本王子和王子结婚的幸福故事。(录影一分钟左右)。如果你们听到孩子的老师给他们念这样的故事会有什么反应吗?
Amazon link of 《王子和王子》一书
http://www.amazon.com/King-Linda-Haan/dp/1582460612/ref=sr_1_1?
我上次也无意中发现孩子的学校里有这本 Bobby叔叔和Jamie叔叔的婚礼的故事书
http://www.amazon.com/Uncle-Bobbys-Wedding-Sarah-B... 阅读全帖
p**********u
发帖数: 15479
28
来自主题: Missouri版 - 东亚女胸小的原因找到了 (转载)
【 以下文字转载自 WaterWorld 讨论区 】
发信人: ldy (现在我很害怕,可能时间会炸), 信区: WaterWorld
标 题: 东亚女胸小的原因找到了
发信站: BBS 未名空间站 (Fri Feb 15 11:11:04 2013, 美东)
发信人: inergas (大坏猪), 信区: Military
标 题: 东亚女胸小的原因找到了
发信站: BBS 未名空间站 (Fri Feb 15 09:21:19 2013, 美东)
http://www.nytimes.com/2013/02/15/science/studying-recent-human

East Asian Physical Traits Linked to 35,000-Year-Old Mutation
By NICHOLAS WADE
Published: February 14, 2013
Gaining a deep insight into human evolution, researchers have identified a
mutation in a critic... 阅读全帖
l*y
发帖数: 21010
29
来自主题: Fashion版 - 东亚女胸小的原因找到了
【 以下文字转载自 Military 讨论区 】
发信人: inergas (大坏猪), 信区: Military
标 题: 东亚女胸小的原因找到了
发信站: BBS 未名空间站 (Fri Feb 15 09:21:19 2013, 美东)
http://www.nytimes.com/2013/02/15/science/studying-recent-human

East Asian Physical Traits Linked to 35,000-Year-Old Mutation
By NICHOLAS WADE
Published: February 14, 2013
Gaining a deep insight into human evolution, researchers have identified a
mutation in a critical human gene as the source of several distinctive
traits that make East Asians different from other races.... 阅读全帖
l*y
发帖数: 21010
30
来自主题: WaterWorld版 - 东亚女胸小的原因找到了
【 以下文字转载自 Military 讨论区 】
发信人: inergas (大坏猪), 信区: Military
标 题: 东亚女胸小的原因找到了
发信站: BBS 未名空间站 (Fri Feb 15 09:21:19 2013, 美东)
http://www.nytimes.com/2013/02/15/science/studying-recent-human

East Asian Physical Traits Linked to 35,000-Year-Old Mutation
By NICHOLAS WADE
Published: February 14, 2013
Gaining a deep insight into human evolution, researchers have identified a
mutation in a critical human gene as the source of several distinctive
traits that make East Asians different from other races.... 阅读全帖
y****i
发帖数: 1265
31
【 以下文字转载自 Biology 讨论区 】
发信人: yweili (杨威利), 信区: Biology
标 题: 据说哈利波特上nature了
发信站: BBS 未名空间站 (Thu Jan 6 14:13:20 2011, 美东)
发信人: Isaiah (SKIASONARANHR), 信区: Emprise
标 题: 据说哈利波特上nature了
发信站: 水木社区 (Thu Jan 6 09:19:54 2011), 站内
http://blog.renren.com/share/225423167/4622536314
刚看了《哈利波特7上》,无聊的在PubMed里面用"Harry Potter"做关键词搜索文献,
得到32篇文献,居然还有发在Nature上的文章两篇 还有其他牛文若干篇。灰常的欢乐。
附该文章链接: http://www.ncbi.nlm.nih.gov/pubmed/16094345
以免大家以为是我胡诌。最近真是闲的蛋疼。
==========================神==作==分==割==线====================... 阅读全帖
y****i
发帖数: 1265
32
来自主题: Biology版 - 据说哈利波特上nature了
发信人: Isaiah (SKIASONARANHR), 信区: Emprise
标 题: 据说哈利波特上nature了
发信站: 水木社区 (Thu Jan 6 09:19:54 2011), 站内
http://blog.renren.com/share/225423167/4622536314
刚看了《哈利波特7上》,无聊的在PubMed里面用"Harry Potter"做关键词搜索文献,
得到32篇文献,居然还有发在Nature上的文章两篇 还有其他牛文若干篇。灰常的欢乐。
附该文章链接: http://www.ncbi.nlm.nih.gov/pubmed/16094345
以免大家以为是我胡诌。最近真是闲的蛋疼。
==========================神==作==分==割==线==========================
在下面第一篇nature文章中,在2005年《哈里波特与混血王子》出版后,来自澳大利亚
皇家儿童医院的Graig等人,同样对哈里波特中描述的有超能力的巫师wizards and
witches与麻瓜muggle结合后,后代属性问... 阅读全帖
f**d
发帖数: 768
33
很有趣的研究
ScienceDaily (May 2, 2011) — People who look at the past through
rose-tinted glasses are happier than those who focus on negative past
experiences and regrets, according to a new study published in the
journal Personality and Individual Differences. The study helps
explain why personality has such a strong influence on a person's
happiness. The findings suggest that persons with certain personality
traits are happier than others because of the way they think about their
past, present and ... 阅读全帖
y**********g
发帖数: 2285
34
来自主题: Military版 - 人类祖先来自公猪和母猩猩
靠谱吗?
LONDON: Humans are actually hybrids, who emerged as an offspring of a male
pig and a female chimpanzee, according to one of the world's leading
geneticist.
Turning the theory of human ancestry on its head, Dr Eugene McCarthy — one
of the world's leading authorities on hybridization in animals from the
University of Georgia has suggested that humans didn't evolve from just apes
but was a backcross hybrid of a chimpanzee and pigs.
His hypothesis is based on the fact that though humans have ma... 阅读全帖
d********r
发帖数: 3279
35
来自主题: Fishing版 - 发一张cutthroat的照片
again, 生物都有 variable 和 invariable traits。variable traits 受环境,性别
,季节,spawning 否影响很大,如斑点花纹颜色都是variable traits。invariable
traits 是genetically linked,无法改变,如鳃下的红色strip。invariable traits
determine the species.

at
j**n
发帖数: 13789
36
Aries:March 21 - April 20
Ruling Planet:Mars
Symbol:Ram
Color:Red
Lucky stone:Diamond
Flowers:Geraniums,Honey Suckle
Lucky No.:1 and 9
Lucky Day:Tuesday
Key phrase:I Am!!
Keywords:Assertive, Impulsive
Main trait:Courage
Notable Aries: Leonardo Da Vinci April 15, 1452, Italian Architect,
Painter, and Sculptor)Celine Dion (March 30, 1968, Canadian Singer)
Personal Trait: Personal traits of an Aries person are openness,
enthusiasm and individualism. Desire, initiative, courage and action are
words ... 阅读全帖
y****g
发帖数: 36950
37

哈哈哈哈哈哈,你又输了,人类已经意识到保护动物的重要性了,野生孔雀是国家级保
护动物,不可以乱杀。会被大陆公安抓去坐牢的。
另外你不要信口开河孔雀的天敌被人捕杀完了。没有科学依据。还有人因为孔雀毛好看
而养殖孔雀观赏呢,所以人类社会对自然的破坏或者保护并不属于进化论里的天敌范畴。
是你东扯西扯暴露你的无知的,我是在谈论男女有别,男人创造力比女性强。而你跳出
来扯到什么创造力冒险精神让人死的早,还扯什么到什么鸟玩意,我是教育你要多读书
才费心写了这些帖子,你不用谢我了,我这算是对你的人道关怀。
至于蝴蝶我是在告诉你无毒的动物用鲜艳的色彩和图案作为保护色来恐吓敌人的事实。
死的早也是创造力强。死不死和你没关系。哈哈哈
另外,看看人家的论文质疑你的所谓的性择论:
http://www.answersingenesis.org/articles/tj/v15/n2/peacock
Problems with the theory of sexual selection
If future experiments show that there are no preference genes ... 阅读全帖
t******n
发帖数: 2939
38
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purity (purity) 于 (Wed Aug 17 00:41:32 2011, 美东) 提到:
看到一些猪头男一直在网上说女人不如男人,智力创造力不如男人,
说什么几千年历史证明男人才是社会的强者。
女人之所以弱,无非是因为生育和培养下一代花费太多精力,
怀孕生小孩,对女人来说,就像走过一回鬼门关,
照料下一代女人更是付出无数心血。
要是女人的身体结构如男人般强壮,也不用生育照顾孩子,
跟男人一样把时间精力花在事业上,很多男人会哭,
比起脑袋灵敏度,学习能力,很多男人不如女人。
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yugong (愚公挖坑) 于 (Wed Aug 17 01:13:48 2011, 美东) 提到:
我觉得你没有弄清楚为什么,你学数理化是为学而学,这样属于专业培训,老师好,人
聪明勤奋,肯定能拿奖。但是容易高分低能。
但是在复杂的社会环境里事业有成需要创造力,也就是要触类旁通,或者为了应用而学
。你觉得自己够聪明,数理化... 阅读全帖
w******e
发帖数: 953
39
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
s*******e
发帖数: 1544
40
美国搞的这些转基因垃圾都是用来screw第三世界的。这些国家法制不健全,政府腐败,人民愚昧,用来当转基因白鼠正好,顺便还能剥削一通,多好!
(NaturalNews) Unless the rice you buy is certified organic, or comes
specifically from a farm that tests its rice crops for genetically modified
(GM) traits, you could be eating rice tainted with actual human genes. The
only known GMO with inbred human traits in cultivation today, a GM rice
product made by biotechnology company Ventria Bioscience is currently being
grown on 3,200 acres in Junction City, Kansas -- and possibly ... 阅读全帖
b****r
发帖数: 17995
41
来自主题: Biology版 - 女人为什么月经?
你说“由于它是一个相对的稳定点,所以它对于进化上和它接近的性状是有进化优势的”
你这两者根本没有必然的因果关系。 我已经用无数个DNA junk序列举例,结果被你华
丽无视了。无数的DNA序列都在现有人群中占有主体,但是实验证明他们根本无关紧要。
而且我的观点恰恰相反,很有可能月经并不是在向一个稳定点靠拢,而且恰恰相反,我
认为它是在走向消失。因为它这个trait根据现有的理解并不是个under selection
pressure的trait,而很可能只是和其他亿万个大部分人类共有的trait一样,只是个碰
巧在那个瓶颈阶段出现了的东西。
我的道理很简单,月经这个trait和其他很多trait一样,我看不出它有什么独特的优势
,其他无数动物都没有月经,都繁殖得好好的,你凭什么说它有进化优势。月经是个研
究得很深入相当清楚的东西,你既然如此坚持月经有这么强大进化优势,你是不是能拿
出像样的证据?或者你来解释解释,为什么全世界的人类都具有这么多很相似的junk
序列?这些东西是不是也是有进化优势?
a*****x
发帖数: 901
42
来自主题: Biology版 - 女人为什么月经?
我没有说月经有“强大”的进化优势,我也不否认进化的结果有随机性。我强调的是说
由于这个trait是进化出的相对的稳定点(ESS),所以它一定至少没有进化劣势。而由于
它本身存在着能量损耗的劣势,所以它其他方面必然具有相对的进化优势。
再说清楚一点。假如决定月经的有一组基因,这组基因存在随机突变,突变导致性状在
一定程度改变,比如周期变长,量变小,在物资匮乏时是否消失,等等。甚至来与不来
的改变(取决于需要多少突变)。目前的月经trait至少比这些突变具有一定优势来弥
补它本身的劣势,否则会被这些其他的traits take over。
所有被保留下来的trait,如果他们已经保留了足够长的时间已经达到ESS的话,那么他
们相比随机突变产生的结果必然至少没有劣势。你说的其他垃圾trait能够保留,要么
他们本身没有劣势,要么他们优势大于劣势。要么就是还没有到达稳定点。
在物资匮乏时要消失这个现象恰恰说明了月经是有劣势的,所以它之所以还能成为目前
的稳定点,它必然有进化优势。
建议你读Richard Dawkins 的 selfish gene。你要的证据那里有很多。
T*R
发帖数: 36302
43
来自主题: Military版 - WSN们不要怕垃圾食品
STUDY: Skinny Women And Overweight Men Earn The Most
Journal of Applied Psychology
Women have another reason to hit the gym, while men may have another reason
not to.
The Journal of Applied Psychology found that women who are 25 lbs. below
average weight take home an additional $15,572 each year.
On the other hand, men who are 25 lbs. below average weight take home $8,437
less each year.
We knew gender expectations were unfair, but this shocked even the
researchers:
"Perhaps the most startling f... 阅读全帖
m******1
发帖数: 19713
44
By Andi Alexander
Female woman symbol gender x390 (fair) | Advocate.com
Gay men are more likely than lesbians to show gender-nonconforming traits
during childhood, according to a new study by Queen Mary University in
London.
Research following children to adulthood shows that 50%-80% of gender-
nonconforming boys grow up to be gay. Meanwhile, only about one-third of
nonconforming girls become lesbians.
Psychologists Andrea Burri and Qazi Rahman report that genes may be
partially responsible for... 阅读全帖
l****z
发帖数: 29846
45
A Fate That Narcissists Will Hate: Being Ignored
By CHARLES ZANOR
Narcissists, much to the surprise of many experts, are in the process of
becoming an endangered species.
Not that they face imminent extinction — it’s a fate much worse than that.
They will still be around, but they will be ignored.
The fifth edition of the Diagnostic and Statistical Manual of Mental
Disorders (due out in 2013, and known as DSM-5) has eliminated five of the
10 personality disorders that are listed in the current e... 阅读全帖
D*********n
发帖数: 674
46
http://takimag.com/article/the_talk_nonblack_version_john_derby
这里有个教育孩子的关于黑人的好文章。实用。
The Talk: Nonblack Version
by John Derbyshire
April 05, 2012
Share on emailShare on printMultiple Pages
The Talk: Nonblack Version
There is much talk about “the talk.”
“Sean O’Reilly was 16 when his mother gave him the talk that most black
parents give their teenage sons,” Denisa R. Superville of the Hackensack (
NJ) Record tells us. Meanwhile, down in Atlanta: “Her sons were 12 and 8
when Marlyn Tillman realiz... 阅读全帖
p****t
发帖数: 292
47
来自主题: USANews版 - interesting read
http://takimag.com/article/the_talk_nonblack_version_john_derby
There is much talk about “the talk.”
“Sean O’Reilly was 16 when his mother gave him the talk that most black
parents give their teenage sons,” Denisa R. Superville of the Hackensack (
NJ) Record tells us. Meanwhile, down in Atlanta: “Her sons were 12 and 8
when Marlyn Tillman realized it was time for her to have the talk,” Gracie
Bonds Staples writes in the Fort Worth Star-Telegram.
Leonard Greene talks about the talk in the New Yor... 阅读全帖
t*******r
发帖数: 22634
48
来自主题: Parenting版 - 超前 vs 挖深 vs 全A
这个说的有道理。其实我觉得基本点还不是脑子里固有的东西,而是娃当前的 traits
所决定的大方向,基本不可改变。
但话说回来,就是小方向的调整或改变配平比,这个对自家娃的影响也是很大了,虽然
对前面那小学三年级解微积分的角度看是 trivial difference。
所以交流还是有意义的,只是这个意义很难在版面上显示出来,因为 traits 是第一差
别。但是另一方面,自家娃的 traits 无法改变,所以对自家娃而言,traits
difference 是个常量,所以一阶导数主要看自己咋推。

发帖数: 1
49
来自主题: Colorado版 - 全美100个城市都市化程度评级
城市评级系统是第一个综合评级体系,衡量城市的城市规模为1~10。该体系已经工作
了2年以上,包括来自许多公共和私人的100多个不同的变量源。 已经为美国100个最大
城市(基于2013年的人口)开发了UrbanSCALE评级。 关于UrbanSCALE评级体系方法的
解释,请参阅充满活力的城市的10个特征 。
The 10 traits are listed below, each with a link to a separate page for that
specific trait. Each page includes a set of questions that describes the
types of variables used to measure that particular trait and the full list
of urbanSCALE ratings for that trait for all 100 cities:
u: niversal appeal
r: egion
b: uildings
a: mbition
n: eighbor... 阅读全帖
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