z****0
发帖数: 3942 | 1 这是俺收到的最后一封80-20邮件，贴上来供大家参考。
-------------------------------------------------------------
From: S. B. Woo ;
To: ;
Subject: Why the Self Empowerment Long-term Fund?
Sent: Mon, Oct 7, 2013 4:05:05 PM
As the acronym SELF implies, it may signify that henceforth Asian
Ams possess the
self-confidence, wisdom, courage and the caring
for justice and equal opportunity
to put up OUR OWN money in order to fight OUR OWN battles to WIN
O... 阅读全帖 |
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w**s
发帖数: 47 | 2 有一些错还真是犯过:
1. "Here, I'll do it."
It's natural to want to take control of a child's project or make their bed,
but then they will never learn (or want to learn) how to do it themselves
2."Don't cry."
Children should feel safe when it comes to expressing their emotions.
Telling your child not to shed a tear implies that there is something wrong
with it, when it's completely normal.
3."Why can't you be more like ___?"
Nothing makes a child feel worse than hearing she isn't as good as a sibling
or ... 阅读全帖 |
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a*****g
发帖数: 19398 | 3 魁北克试验采用类似美国方法教数学，结果挂了
Canada Quebec’s math reform -- epic fail
ttp://kitchentablemath.blogspot.com/2014/08/1st-major-study-of-reform-math-
epic-fail.html
In the August 2014 issue of Economics of Education Review:
Abstract
We investigate the impact of an ambitious provincial school reform in Canada
on students’ mathematical achievements. It is the first paper to exploit a
universal school reform of this magnitude to identify the causal effect of
a widely supported teaching approach on students’ m... 阅读全帖 |
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b*******9
发帖数: 13548 | 4 【 以下文字转载自 Biology 讨论区 】
发信人: peoplem (我爱我家), 信区: Biology
标 题: 写给Nature主编的抗议信
发信站: BBS 未名空间站 (Thu Aug 2 14:15:36 2012, 美东)
俺英文不行 谁能不能帮我看看修改修改？另外里面的引用有体育迷帮我看看对不对。
我尽快发出去
真是气死我了，我里面也说了，他们要是不撤稿道歉以后绝不再投任何NPG的杂志，我
个小喽啰人家肯定不care,但是要是有100个华人科学家去信抗议他们敢不敢不care?
1000个呢？xdjm们该我们有点行动的时候了！看看人家文章里面怎么说的"When we
look at this young swimmer from China who breaks a world record, that’s not
proof of anything. It asks a question or two.”"看到了吧，中国人你做绵羊做
顺民我们不管，你们敢出人头地那我们是不相信的 你们肯定有问题！
Philip Campbell, Ph.D. and Edito... 阅读全帖 |
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n*********p
发帖数: 151 | 5 【 以下文字转载自 Biology 讨论区 】
发信人: peoplem (我爱我家), 信区: Biology
标 题: 写给Nature主编的抗议信
发信站: BBS 未名空间站 (Thu Aug 2 14:15:36 2012, 美东)
俺英文不行 谁能不能帮我看看修改修改？另外里面的引用有体育迷帮我看看对不对。
我尽快发出去
真是气死我了，我里面也说了，他们要是不撤稿道歉以后绝不再投任何NPG的杂志，我
个小喽啰人家肯定不care,但是要是有100个华人科学家去信抗议他们敢不敢不care?
1000个呢？xdjm们该我们有点行动的时候了！看看人家文章里面怎么说的"When we
look at this young swimmer from China who breaks a world record, that’s not
proof of anything. It asks a question or two.”"看到了吧，中国人你做绵羊做
顺民我们不管，你们敢出人头地那我们是不相信的 你们肯定有问题！
Philip Campbell, Ph.D. and Edito... 阅读全帖 |
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l*****n
发帖数: 577 | 6 问个关于延期后再次入境的问题 --- 如果上次有短暂延期（2个月左右，因为身体不适
），下次入境(at US border)的时候，会被要求出试延期approval letter以及问到为
什么延期吗？Will it depend on whether you have new visa stamp or not? 如果有
(imply 在国内要待上有一段时间），是不是不会问到? 相反,如果没有 (imply 在国
内大概只待三,四个月），是不是会被仔细盘查? |
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c*****k
发帖数: 2080 | 7 这周（不算今天），DOW up 600 points, NAZ 100 points.
(add some reason, 免得被村长给办了）
CSCO might only serve as the trigger, the real power should be coming from
the inflation relief. Fed might imply the house/finance is still their focus
which imply they might not raise the rate this year.
注意哈，错了俺不负责，对了的话，包子的拿来。 |
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r******o
发帖数: 1530 | 8 actually, NO..., that's why I post on this board, see if anyone has any
insight.
Its implied vol has been gradually going up, while its hist vol has been low.
There is no spike in implied vol though.
I personally have been rolling the call for two months now, my break even is
actually about $8.
Want to roll the call today... |
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r******o
发帖数: 1530 | 9 I looked at the implied vol and historical vol, I won't sell covered call in
this case. Today's vol is close to 1Y low, only around 27%.
Here is one adverse case that may happen to you: your stock drops, at the
same time, you vol shoot up. You get hurt both sides.
Usually, a declining implied vol is coupled with steady climb of the stock.
Why don't you just hold?
still some upside potential left in the near future. But not in long run. |
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g****u
发帖数: 695 | 10 You are asked to build a trading strategy with 60% correct ratio. This means
whatever method you give, it will be excuted a large number of times in
market in order to make sure profit with statistic significancy.
^VIX is an index so not tradable directly. There are derivatives using ^VIX
as the underlying, e.g. VIX futures and options. That would be the first
products you should look at. However, due to their lack of liquidity,
neither is suitable for a trading strategy to bet through a large n... 阅读全帖 |
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m*****i
发帖数: 4342 | 11 I should charge 100 weibi for this:)
Total Equity: 1,914 Million dollars, almost not debt with about 1 billion
cash.
247 million goodwill and other intangibles.
So tangibles equity should be: 1,667 Million with only 250 million equipment.
Market value 2,500 million implies enterprise value 833 million dollar.
For last quarter, earning + depreciation - capital spending 70 million 280
million annualized.
So implied Enterprises/Cash flow = 3.
So this is relative safe unless
1) Another recession
2)... 阅读全帖 |
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b******7
发帖数: 639 | 12 THE BEAR MARKET IN STOCKS ENDED a year ago, but a lot of online traders and
investors apparently didn't get the memo. They cut back on equity
transactions in 2009 -- despite the 23.5% surge in the Standard & Poor's 500
-- and instead demanded more products and services. They got them. More
bonds, options, foreign exchange, commodities and mutual and exchange-traded
fund offerings; more social networks to combine their talents; more
education to wean themselves further from full-service brokerage... 阅读全帖 |
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d*****l
发帖数: 8441 | 13 有人不信，可以看看这个：
http://www.prnewswire.com/news-releases/china-agritech-further-
摘一段，“地产出售”篇，真是这么干的：
Despite LM's allegation, the Company's Harbin facility has never been listed
for sale. LM posted what it claimed was a "For Sale" sign in front of a
facility but that facility was not the Company's. The sign has a telephone
number, so a representative of the Company dialed it (+86 13945131618).The
representative was told by a Mr. Bi that the actual factory for sale is
addressed at No. 16, Dalian Road... 阅读全帖 |
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a*****e
发帖数: 1717 | 14 I chose ESH1 as an example, 23.25*60 = 1395 minutes per day. All values
should be times around $50 as implied dollar value.
I used one min bar data since 2011-01-01 till 2011-03-18 (settlement day),
Should have used roll over day of ESH1 cause it has huge liquidity since,
that should bring two extra weeks)
Most liquid minutes:
Time Value
15:59:00 1763905170.75 — this is most liquid one, no surprise, just
before daily settle
16:00:00 1710474733.25 — same reason, but last minute
09:30:00... 阅读全帖 |
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E**O
发帖数: 1980 | 15 狗剩昨天号召大家买call。请看：
http://www.bloomberg.com/news/2011-04-13/buy-bullish-google-opt
Buy Google’s Bullish Options Before Earnings, Goldman Says
By Jeff Kearns - Apr 13, 2011 1:15 PM PT
inShare
More
Print
Email
Google, Microsoft Gain Share of U.S. Searches
Google Inc. signage is displayed at the company's headquarters in Mountain
View, California. Photographer: Tony Avelar/Bloomberg
Ben Edelman Interview on Google
Play Video
April 12 (Bloomberg) -- Ben Edelman, an assistant professor... 阅读全帖 |
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v****e
发帖数: 19471 | 16 2010 revenue: $1.9B
2010 Ebitda: $??
2011E Revenue: $4.0B
2011E Ebitda: $2.0B
Current valuation on private exchanges: $75B
Implied trailing P/S: 38 X
Implied forward P/S: 19 X
If LNKD can be worth 37X trailing sales, I think a 38X trailing P/S
valuation for Facebook is extremely cheap. Why?
1. It is much, much hotter
2. It is a true, worldwide information monopoly
3. The ad business for Faceboook is still in infant stage
4. 100% revenue growth seems to be a conservative estimate |
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c**y
发帖数: 419 | 17 利用下面这个在线计算期权价格, greeks的网站, 我们可以得到几个结论:
http://www.option-price.com/index.php
假设0%的利率, 0%的dividend, 对at the money的call options
1) delta: IV (implied volatility,或者方差)越小, delta越接近0.5; 随着IV增加,
则
delta接近0.6-0.7
2) vega (期权价格对iv的导数), 对iv很不敏感. 只跟股价有关. 而对于in或者out of
money的
期权, vega随着iv的增大而增大.
3) gamma: IV越大, gamma越小
at the money期权的iv可以用下面这个近似公式, Brenner and Subrahmanyam (1988)
iv = sqrt (2*pi / t) * C / S
= 期权价格C / [ 0.4 * 正股价格S * sqrt(t) ]
Reference:
Brenner, M. and Subrahmanyam, M.G. (1988). A simp... 阅读全帖 |
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b******r
发帖数: 16603 | 18 As of today, for example,
105 call Implied volatility
102.10
105 put Implied volatility
102.36
let's watch whether they are going up or down.
value |
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b******r
发帖数: 16603 | 19 Q4：
Brand advertising revenues were US$78 million, up 29% year-over-year and 2%
quarter-over-quarter.
Q1：
Brand advertising revenues, including those from 17173.com, to be between $
60 million and $63 million; this implies a sequential decrease of 19% to 23%
, and an increase of 5% to 10% year-over-year.
跟Q4比，为啥这么猥琐？QOQ可以说是纯粹季节因素？YOY看上去也很弱啊。。
与搜狗比下，年度增长太差劲了。Sogou revenues to be around US$21 million;
this implies a sequential decrease of about 9% and an annual growth of about
163%.
广告收入或许是中国整体slo... 阅读全帖 |
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Q*W
发帖数: 1 | 20 Heartsme
Here it's info about Uvxy,vxx,tvix and Vix ...hope it helps.
I have coped some commons from yahoo message boards about
the topic of "UVXY and VXX Explained"
There is so much confusion on regarding UVXY and VXX, I thought I would set
the record straight and try to keep it simple.
First of all, the VIX Spot Price is an index that measures implied market
volatility based upon the activity of put/call options. The higher the VIX,
the more implied market volatility, the lower the VIX, the le... 阅读全帖 |
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c*******y
发帖数: 1630 | 21 如果不了解VIX的，最好别做。即便了解了VIX，VIX的东西也非常难做。并不是说没有
靠运气赚大钱的可能。最近很多同学在VIX低位的时候，大量买入VIX的ETF，我只能说
这纯粹是靠天收了，赚了钱也不知道自己怎么赚的。另外避免LEVERAGE ETF这种说法，
虽然很鸵鸟，但是对很多人来说也是明智的。
VIX，CBOE上有白皮书PDF下载，算法看起来很复杂，实际上就是OEX的ATM左右的第2,3
月份的CALL和PUT的IMPLIED VOLATILITY的某种加权平均，需要注意的是，是IMPLIED
VOLATILITY基于MID PRICE的，这给了人为操控极大的便利。当MARKET MAKER突然
WITHDRAW或者大幅降低某些BID时候（完全没有交易动力），MID会大幅降低，带动IM大
幅降低，这可以解释，近期经常发生的，SPX平稳，OEX平稳，VIX突然出现下跌1点的
PRINT，然后过一阵恢复到下跌前的水平。 |
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I***e
发帖数: 1136 | 22 Bloomberg. The below is for Warren Buffett.
The majority of Buffett's fortune stems from his ownership in Berkshire
Hathaway, 350,000 Class A shares and 26.2 million shares of Class B stock.
He has 23 percent economic interest in the company.
Buffett donates about 5 percent of his Berkshire stock to charity each
summer, much of it to the Bill & Melinda Gates Foundation.
In addition to his Berkshire stake, Buffett oversees an outside portfolio
worth an estimated $500 million to $1 billion. In 201... 阅读全帖 |
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e*********r
发帖数: 46 | 23 We attempt to gauge how much FC will impact stock markets. Take S&P 500. Its
current level is 1,402. Recent peak is 1,474. Recent low is 1,258. Assume
the index drop 10% going over the cliff, flat if the cliff is postponed and
increase 10% if a deal is reached to address fiscal cliff. The probability
of 60%, 10% and 30% are assigned to the above scenarios respectively. It
follows the probability weighted expected index value is 1,360 (email us if
you have any question). At 1,360, it is implied t... 阅读全帖 |
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D******e
发帖数: 11265 | 24 Apple's mixed Q1 2013 results: What the analysts are saying
By Philip Elmer-DeWitt January 23, 2013: 9:13 PM ET
Email Print
The analysts weren't as freaked out as the traders seemed to be
Note after-hours trading. It was worse a couple hours earlier.
FORTUNE (Koh Ngai, Thailand) -- There was mild disappointment here and
there, but most analysts reacted calmly to a holiday quarter report that
carved more than $50 billion off Apple's (AAPL) market cap in after-hours
trading.
A sampling of the... 阅读全帖 |
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y******i
发帖数: 199 | 25 不是大师，一点拙见。
你买股票，卖ATM靠。首先，你的exposure是放弃一周内所有的upside收益,而承受所有
的downside风险。而放弃所有upside收益的回报是premium 1块钱。
如果股票涨，那么你的收益就是1块钱。
如果股票跌，跌得少，你仍然赚，跌得多，你就亏。这是容易理解的。因为卖靠是在卖
vol。如果跌得多，就是realized vol高于你卖出的implied vol，也就是你的vol卖便
宜了，所以你就亏了。如果跌得少，就是realized vol低于你卖出的implied vol,所以
你把vol卖了个好价钱，所以你就赚了。
所以赚与赔取决于realized vol的高低。买卖option就是在于你对市场vol走向的判断
。至于roll就是重复这个过程，不断地赌vol的走向。 |
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G********p
发帖数: 3504 | 27 ExOne (XONE) option implied volatility is expected to pick up after 3D
Systems(DDD) announced preliminary weak full year 2013 results. Overall
option implied volatility of 57 is near its 21-week average of 59 according
to Track Data, suggesting non-directional price movement. |
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m*********h
发帖数: 5449 | 28 Carl Richards has a post over at the New York Times' Bucks blog in which he
puzzles over the enduring appeal of hedge funds, despite the fact that they
have historically underperformed the S&P 500. Why, he asks, are people
paying exorbitant fees to hedge-fund managers who don't even make money for
them?
Richards takes a stab at the answer in a few ways. First, he implies that
there's an element of groupthink in Hedgistan, with investors all chasing
increasingly complex hedge-fund strategies beca... 阅读全帖 |
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w********2
发帖数: 16371 | 29 虽然老文了， 网上搜来，应该还能用：
发信人: magicfat (魔法胖子), 信区: Stock
标 题: 说说期权（1）
发信站: BBS 未名空间站 (Fri Aug 22 16:34:04 2008)
冒了个泡，被村长抓住，还留了作业让写点“ Option
Tutorials”。 这就算开始交作业吧 。打算写初中级的入
门，所以可能对 已经在作options的同修没什么意义。
8-）
先说说基本概念和术语。其实options--期权 --是A和B就
某只股票 X的未来走向下赌注，A 赌X在某个时间点T一定
低于 或者高于某个价 格P，B则赌相反。所以B就从A那里
买一个合约 ，说自订约到T那天止，不 管X的市场价P(t)
是多少，B可以有权选择以价格P从A那里买或 者卖给A
100股X。如果合约规定的是买的权利 ，这个合约就是一
个靠(Call)，如果是卖的权 利，就 是一个扑(Put)。T之
前的最后一个交 易日也就是我们常说的OE day。
所以要完整定义一项特定的期权，就要定义X ，P，T，以
及靠或扑。比如MSFT SEP 30 CALL 就是说“在九月的第三
个星期... 阅读全帖 |
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B******e
发帖数: 16928 | 30 Yuan increase implies Chinese export hammered, more factories closing and
more migrants lose their jobs. Is that really good? China now is doomed.
Devaluation results in capital outflow and appreciation implies economy
slowdown. |
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w****o
发帖数: 2260 | 31 季报早上9点多忽悠大家去买思科。盘后就大跌。
呵呵
https://www.yahoo.com/news/m/2f1e5368-9dae-3d81-8969-fd1742246bcf/here%E2%80
%99s-why-one-trader-sees.html
Business
Here’s why one trader sees Cisco shares heading higher on earnings
Heidi Chung Wed, May 17 9:42 AM PDT
Reactions Sign in to like Reblog on Tumblr Share Tweet Email
Cisco (NASDAQ: CSCO) stock has been on fire over the past year, surging 28
percent, and one trader thinks there's more room to run ahead of earnings.
The tech giant reports earnings after t... 阅读全帖 |
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E***r
发帖数: 1037 | 32 “IV固定的情况下，options定价太高” 这个说法不正确。
IV (implied volatility) 实际是 volatility implied by option prices...
供不应求、买方把某个 strike 的 option price 给 bid 高了，
该 strike 的 IV 就升高了。IV 就是 option price 的反映。 |
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E******y
发帖数: 614 | 34 他的意思可能是option的实际成交价高于根据IV和option定价模型算出来的理论价.
[在 Ektar (Ektar) 的大作中提到：]
:“IV固定的情况下，options定价太高” 这个说法不正确。
:IV (implied volatility) 实际是 volatility implied by option prices...
:供大于求、买方把某个 strike 的 option price 给 bid 高了，
:该 strike 的 IV 就升高了。IV 就是 option price 的反映。 |
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E***r
发帖数: 1037 | 35
的，
"隐含波动率是通过历史数据算出来的"
No. Implied volatility (IV) is market's currently perceived volatility (
that is, the current perception of the annualized standard deviation of
price movement on the maturity date) implied by options prices. It is
directly computed from options prices.
Realized volatility (RV), or Historical volatility (HV), however, is
computed from historical underlying price movement. It is not tied to
options pricing; it is a property of underlying price movement.
IV may overstate ... 阅读全帖 |
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E***r
发帖数: 1037 | 36 “我以前以为给option定价的人是先通过对历史volatility的测量，结合BS模型把价格
给定出来的”——这倒是基本正确的。但此(realized) volatility 非彼 (implied)
volatility。
不同的 options market maker (OMM) 有各自的定价模型（倒不一定是 Black-Scholes
），模型里的 volatility 其实是 estimated volatility (by this particular OMM)
，并不是 implied volatility (IV)。Estimate 的方法一般会参考 realized
volatility，但每家 OMM 都加了自己的 secret sauce，形成自己的 estimated
volatility surface（Google "volatility surface"），按各自的 surface 来给 bid
-ask quotes。也就是说，定价的时候，输入是 (estimated) volatility，输出是
price quotes。
所谓的某个 strik... 阅读全帖 |
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E***r
发帖数: 1037 | 37 我觉得，震荡还是单边，是当前的状态，所以看 realized volatility (RV) 即可，不
必看 implied volatility (IV index, or VIX)。比如 SPX RV > 20% 可以判断大盘进
入震荡，< 13% 则判断进入单边，诸如此类。这类 pairs trading 套利，大概允许滞
后，不必预判。
但如果要对单边和震荡的转折点进行判断，可能就要用 VIX 了；再细致一些，可能要
看 VX futures term structure 的变化。但是一般而言，由当前的 implied
volatility（及其期货衍生品）判断未来的 realized volatility，难度恐怕不亚于预测
股价——要是判断得准，谁还搞什么 arbitrage，直接看准时机买 VIX call 等着翻
倍好了。 |
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E***r
发帖数: 1037 | 38 我觉得，震荡还是单边，是当前的状态，所以看 realized volatility (RV) 即可，不
必看 implied volatility (IV index, or VIX)。比如 SPX RV > 20% 可以判断大盘进
入震荡，< 13% 则判断进入单边，诸如此类。这类 pairs trading 套利，大概允许滞
后，不必预判。
但如果要对单边和震荡的转折点进行判断，可能就要用 VIX 了；再细致一些，可能要
看 VX futures term structure 的变化。但是一般而言，由当前的 implied
volatility（及其期货衍生品）判断未来的 realized volatility，难度恐怕不亚于预测
股价——要是判断得准，谁还搞什么 arbitrage，直接看准时机买 VIX call 等着翻
倍好了。 |
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c*******r
发帖数: 870 | 39 这个值得好好看看！
https://citronresearch.com/citron-reverses-opinion-on-tesla/
Why be Long?
This is a critical quarter for Tesla and there are many reasons we want to
be long (and would certainly not want to be short) into this print:
• Tesla will, finally, after 10 years of unprofitable existence, have
the ability to prove that it can be a sustainable, highly cash flow
generative entity that is no longer reliant on the capital markets.
• A strong quarter removes the overhang of a necessary ... 阅读全帖 |
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g*****8
发帖数: 151 | 40 我被洛杉矶某老中律师以敲诈罪威胁
我发本文的目的，是讲述我被某老中律师以敲诈罪威胁的故事，目的主要在于寻求帮助
和对策，当然我将会寻求自己上班的公司律师或外面专长于民事纠纷的律师的法律建议
。另外，这是为了给版上的所有同学一个反面教材：版上的律师软文不可信。他们的责
任感和专业值得大家质疑，特别在你要打算签约，希望你反复考察再签约。其实，以前
也有不少人总结同样的经验，我以前见过这样的帖子。如果你已经签约，祝你绿卡申请
好运！
现在暂时不公布老中律师的名字。如果你签约了，想证实你的律师是不是我说的老中律
师，站内联系。这个版上有人说某些律师很好，也有不少人说某些律师是无良。
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真实故事，以下按照实际顺序阐述。
今年8月上旬签约洛杉矶某老中律师，我先付$2500,如果140拿到批准，我需要再付$
2000。（现在通过比较其他律师，有不少律师在这$4500里负责写推荐信和petition
letter等等，但是这家洛杉矶老中律师不写推荐信，写推荐信需要商量价格。版上的同
学要签约，建议万分慎重！）
签约以后我和律师讨论过EB1A申请策略... 阅读全帖 |
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l****z
发帖数: 29846 | 41 下面就有人贴了阿.考过G的很容易理解吧.
The 'study' in question actually proved nothing... there is no corollary
here... What exactly are the murder rates using weapons purchased before and
after the 2007 repeal? In order to show causation, there must be an
accurate assessment and accurate interpretation of the statistics...
In this case, to show causality, you need to compare and contrast the
statistics using handguns purchased before (permit-required) and after (
permit-not-required) and the number of murders co... 阅读全帖 |
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x********o
发帖数: 1442 | 42 【 以下文字转载自 Olympics 讨论区 】
发信人: xiaobenmao (水晶瓶子), 信区: Olympics
标 题: 对Nature失望透顶
发信站: BBS 未名空间站 (Thu Aug 2 14:20:55 2012, 美东)
Nature太让我失望了，竟然发了这么一篇无论逻辑还是数据分析都漏洞百出的的狗屎文
章。
At the Olympics, how fast is too fast? That question has dogged Chinese
swimmer Ye Shiwen after the 16-year-old shattered the world record in the
women's 400-metre individual medley (400 IM) on Saturday. In the wake of
that race, some swimming experts wondered whether Ye’s win was aided by
performance-enhancing drugs. She has n... 阅读全帖 |
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T********r
发帖数: 62 | 43 斑竹，这上纲上线就没必要了，中国病态比例还真不一定比美国高
哪个国家网上都有烂人，你要是多看看这边英文新闻下面美国人评论，就会发现美国烂
人不少
随便搜个cnn去年四川地震80人遇难的报道
http://www.cnn.com/2012/09/08/world/asia/china-earthquakes
esoteric12
2 billions to go
Jim2012
This is not a news even in China, only 80!
Raymond Chow
Really that's how you see it. 80 people don't matter because it's 0.0000059%
of the population. And when the Colorado theatre shooting result in 9
deaths which is 0.0000027% of the population. That matters more?
Seriously
BobMc
80 people die in an hour ... 阅读全帖 |
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k**L
发帖数: 3630 | 44 hahaha,笑死人啦.
The gun self-defense data comes from a report in the The Journal of Criminal
Law and Criminology, Northwestern University School of Law, (Fall 1995)
titled, "Armed Resistance to Crime: The Prevalence and Nature of Self-
Defense With a Gun," by renowned criminologists Gary Kleck & Marc Gertz.
你的所谓的"用枪自卫数据"是从一个什么野鸡学院的某个叫兽1995年搞的survey出来的
.根本不是什么权威! 那篇文章里说的所有的相关数据,引申的其他的数据也全是survey
.也就是自己掏钱给私人公司问卷的.基本上可以肯定的是,没有任何官方的真实数据.
survey 你懂吗?就是雇个人打电话或站街上随便抓个人问的? 呵呵.我敢肯定如果那个
红脖被问到,至少会把自己说出蓝波第二,宇宙... 阅读全帖 |
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V*H
发帖数: 1301 | 45 how did you get that?
it's implied...or can be implied |
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n*********p
发帖数: 151 | 46 【 以下文字转载自 Biology 讨论区 】
发信人: peoplem (我爱我家), 信区: Biology
标 题: 写给Nature主编的抗议信
发信站: BBS 未名空间站 (Thu Aug 2 14:15:36 2012, 美东)
俺英文不行 谁能不能帮我看看修改修改？另外里面的引用有体育迷帮我看看对不对。
我尽快发出去
真是气死我了，我里面也说了，他们要是不撤稿道歉以后绝不再投任何NPG的杂志，我
个小喽啰人家肯定不care,但是要是有100个华人科学家去信抗议他们敢不敢不care?
1000个呢？xdjm们该我们有点行动的时候了！看看人家文章里面怎么说的"When we
look at this young swimmer from China who breaks a world record, that’s not
proof of anything. It asks a question or two.”"看到了吧，中国人你做绵羊做
顺民我们不管，你们敢出人头地那我们是不相信的 你们肯定有问题！
Philip Campbell, Ph.D. and Edito... 阅读全帖 |
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g****a
发帖数: 1959 | 47 可以找个好律师
不知道FL的法律
通常要保证提供的房子可以住人的: implied warranty of habitability
不管lease 上写了没有
看楼主的描述,明显违反了这个implied warranty
可以搬走不服房租,用constructive eviction作fedense
或者自己花钱修缮,然后告房东,索赔所有费用加过去的房租
总之现在的法律,common law,通常是对房客有利的
尤其如果房东是那种商业性的那种
GOOD LUCK |
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z****g
发帖数: 1978 | 48 这个其实具体还是要看implied volatility.
我记得看到过一个理论，把arbitrage分成level 1和level 2，level 1就只是call-put
parity, level 2包括各种butterfly， calendar. 好像在implied volatility
surface满足某种情况
下，的确可以这么做。不过要是小散做，基本就要看运气了。 |
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j**4
发帖数: 10425 | 49 hmmm, ironic again...
ur first sentence seem to imply that garden state is better than NY
but ur second sentence seem to imply that u r ashamed of garden state urself
... |
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m*********o
发帖数: 7545 | 50 FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
It is a shame to see Nature — which nearly all scientists, including myself
, regard as one of the most prestigious and influential physical-science
magazines — publish a thinly veiled biased article like this. Granted, this
is not a peer-reviewed scientific article and did not go through the
scrutiny of picking referees. But to serve as a channel for the general
populace to be in touch with and appreciate science, the authors a... 阅读全帖 |
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