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j******0 发帖数: 258 | 5 Title: Laboratory evaluation of volatile organic compounds emissions
from coated and uncoated oriented strandboard
Source: Forest Products Journal [0015-7473]
Bartekova
yr:2006 vol:56 iss:2
pg:85 -90 |
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m****r 发帖数: 234 | 7 "Hacienda Hotel: 525 North Sepulveda Boulevard, 310-615-0015, $78/
night. A convenient 10-minute walk to the CSEC center. An older but decent
choice."-- FA.
我五月中住过那里,八九十一晚吧,还不错,就是要记得睡觉前把电话线拔了(居然两
点的时候被吵醒说service)。 |
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q*d 发帖数: 22178 | 8 刚才大概试了一下,发现你说的似乎不太对.
对迭代:Xn+1=-B^(-1)*(A*X^2+C),A,B,C都由matlab随机生成,
A= 0.9501 0.8913 0.8214 0.9218
0.2311 0.7621 0.4447 0.7382
0.6068 0.4565 0.6154 0.1763
0.4860 0.0185 0.7919 0.4057
B^(-1)= 0.0935 0.0058 0.0139 0.0272
0.0917 0.0353 0.0203 0.0199
0.0410 0.0813 0.0199 0.0015
0.0894 0.0010 0.0604 0.0747
C= 0.4451 0.8462 0.8381 0.8318
0.9318 0.5252 |
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f*******8 发帖数: 149 | 9 万分谢谢大家的帮助。
这里
A=[ 1.0000 0 0.1000 0
0.4664 1.4449 1.4241 -0.2185
0.2250 0.1654 1.1701 -0.0250
0 0 0 0]
B=-I
C=[ 0 0 0 0
0.0005 -0.0005 0 -0.0091
0.0017 -0.0015 0 -0.0297
-0.0586 0.0509 0 1.0005]
请问在这种情况下,X的解是什么呢?以及如何求得解的呢?
再次万分感谢! |
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g***e 发帖数: 577 | 11 【 以下文字转载自 Stock 讨论区 】
发信人: geome (老网友), 信区: Stock
标 题: QTS_Research Updates
发信站: BBS 未名空间站 (Tue Mar 7 18:00:08 2017, 美东)
Hi,
Continue on the project, I would like to post the preliminary result of
backtest for all SP500 underlyers using Moving Average Stategy for the last
10 years: (ie, buy/sell signal by crossing of 10day and 25day average ).
Sorry for the messy format - you can get a cleaner download of the csv file
in-
http://www.icanbeatmarket.com/research_reports.html
ticker return ... 阅读全帖 |
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G********t 发帖数: 334 | 12 下界正确。上界不对。(a+b)没有上界。
如果你学过线性模型理论,从几何的角度看y, x1, x2 这三个向量,你会发现只要他们
的相对位置合适,可以使得 a, b 很小,而(a+b)很大。
用下面的假数据:
y x1 x2
0.5 0.001 0.0015
1 -1 -0.9991
0.5 -0.001 0
1 0.89 0.94
SAS run 出来的结果是
R^2(x1)=0.0017, R^2(x2)=0.0005
R^2(x1,x2)= 0.9998 |
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g*********n 发帖数: 441 | 13 hi guys, i wanna to transfer the data like :1,2,3,4,5,6,7,8,9,10,11,12,13,14
,15,16,17,18,19,20 to 0001,0002,0003,0004,0005,0006,0007,0008,0009,0010,0011
,0012,0013,0014,0015,0016,0017,0018,0019,0020.
How can i realize that?
Thanks a lot! |
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w**********e 发帖数: 146 | 14 请教一下,我不太懂这个:有个dataset大约3万record,做了一个multivariate
regression,其中dependent var是「hours needed」,是continuous的,三个
independent var,其中两个是值为0/1的categorical var「daytime_or_not,
weekend_
or_not」,第三个是个continous。简单用excel的regression tool run了一下,怎么r
square只有0.0015,是不是这方法根本就用错了?
★ 发自iPhone App: ChineseWeb 7.8
★ 发自iPhone App: ChineseWeb 7.8 |
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c*x 发帖数: 555 | 15 【 以下文字转载自 Arts 讨论区 】
【 原文由 cox 所发表 】
Please visit http://members.xoom.com/homeofcox/mitbbs/
where 0015.htm is the last version. you can click your
right mouse button to open it in a new window.
Being very busy, still it costs me much time! I do not think
I want to change it a lot again! Except that the logoes may be
changed, but that's another story.
Anyway, tell me your feeling and suggestion, guys.. |
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w******y 发帖数: 4871 | 16 Febrile seizures
Author
Marvin A Fishman, MD
Section Editor
Douglas R Nordli, Jr, MD
Deputy Editor
Janet L Wilterdink, MD
Last literature review version 19.1: January 2011 | This topic last updated:
February 3, 2011 (More)
INTRODUCTION — Febrile seizures are a common cause of convulsions in young
children. They occur in 2 to 4 percent of children younger than five years
of age, but the incidence is as high as 15 percent in some populations. This
incidence has been attributed to closer living arr... 阅读全帖 |
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d******g 发帖数: 6966 | 18 这个你要等的话我不知道啊。。。我每个月观察bmw的lease term。。。新的5出来之后
lease term
到现在没有好过。。估计是卖的比较好的原因。..什么时候会变得好。。。我不知道。
。residual
value哈可以。。但是mf最好降到0.0015左右就算可以了
anymore.................................. |
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w*******y 发帖数: 60932 | 21 Ok this post is already making me dizzy-so bear with me. DD has been whining
so it isnt helping
Kohls has KitchenAid Artisan Mixers in many colors for $299.00
Less 10% Power Hour Sale $269.00
Less coupon code CC224TWY $215.00
Shipped cost (with $7.50 surcharge): $223.49
MIR $30:
http://www.kohlscorporation.com/rebates/1.1KA5qtmixers.pdf
$193.49
Less Kohls Cash if considered total net cost $153.49
Also, if you request a refund instead of magazine, you get another $14.50
back as well.
"If you do... 阅读全帖 |
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w*******y 发帖数: 60932 | 23 Flowerhouse 6-1/2' x 5' x 5' Pop Up-PlantHouse Greenhouse
Normally $166, now under $62 at many stores, as low as $12 for one lucky
Columbus person.. Decent reviews
Please keep in mind the prices will change quickly based on inventory and if
they sell out at the store, it will jump up to a higher price.
Link:
http://iway.org/9623791
Store Number: 0003 Lowes Of S.e. Columbus OH $12.46
Store Number: 0004 Lowes Of Rainier WA $14.24
Store Number: 0005 Lowes Of Shawnee OK $19.94
Store Number:... 阅读全帖 |
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a*****h 发帖数: 484 | 24 也许我们已经遇到了人生中最宝贵的投资机会,很多人的账户在过去数月中已经翻了数
倍,而且眼下种种迹象显示美国经济已经开始复苏,这是否意味着三月开始的反弹其实是一
个大牛市的开端呢?
作为一只小青蛙,有幸经历了去年的大熊市,和之后的短暂反弹,以及今年年初的暴跌
以及之后的强劲回升,实在是打开眼界。看到自己的账户一度缩水至仅剩45%(作为青
蛙是何等心痛啊!!!那时候才体会到什么叫做“股市有风险,投资需谨慎”),到如今的
250%(体会到“不经历风雨怎么见彩虹”),不禁感慨万千。后悔过自己由于经验不足
而错过类似car,dtg,hig这样接近10×的机会,而都只是捞了一小漂水就跑;也经历过
由于跟风买入的sorc,sil的破产而导致小分队全军覆没;当然也有过成功的抓住ainv,
lvs等疯狂上涨波段的经历。个人感觉目前的股市还有类似这样的n×的机遇,所以抛砖
引玉,在这里列出我watchlist上的candidate,供大家参考。从胡同的xxtrader老大学
到很多东西,下面的匹克有些来自他的推荐,有些是网友推荐而个人感觉很好的,有些是根据个人的观察觉得有料的,或者是随时有可能喷发的FDA... 阅读全帖 |
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a*****h 发帖数: 484 | 25 个人偏好小盘股,因为成长空间大,或者说n*的可能性大。如果你手头有一只n*的,那
么即使有一两个亏到破产也不可惜,这就是diversification的好处。大约半年前曾发
过一次贴(分享个人的n×俱乐部的pennystock candidate),贡献了一些当时我认为可
能n*的匹克,其中不乏有后来陆续爆发过的ANX, CVM, CYCC,HH,GTN, PNX,YMI, 不一而
足。 希望大家好中选优都赚到钱了!
这次继续推出一些精选匹克供大家参考。引用上次的话提醒一些青蛙同学们注意:
“个人感觉目前的股市还有类似这样的n×的机遇,所以抛砖引玉,在这里列出我
watchlist上的candidate,供大家参考。从胡同的xxtrader老大学到很多东西,下面的
匹克有些来自他的推荐,有些是网友推荐而个人感觉很好的,有些是根据个人的观察觉
得有料的,或者是随时有可能喷发的FDA play,或者是最近有过大量insider buying的
,不一而足。
再次提示,请勿盲目跟风,do your homework and make your own decisions.尽管列
在这里的都是... 阅读全帖 |
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Z***e 发帖数: 3693 | 26 呵呵,你真花时间去研究了。不过你用的是 5 张牌的情况,不适用于 Texas Hold 'em
. 另外在你所说的情况下,Royal Flash 概率应该是 0.0015% / 10 = 0.00015%, 4
Aces 概率因该是 0.024% / 13 = 0.0018%.
在 Texas Hold 'em 出现 Royal Flush vs 4 Aces 的概率应该小于
( 4 x 44 ) / C (52, 9)
C(52,9) 是 52 张牌里选9张的组合的可能性,也就是 52! / ( (52-9)! * 9! ) = 3.
68E+9.
那么 Royal Flush vs 4 Aces 的概率应该小于 4.78 E-8. 有兴趣的同学,可以去算一
下确切的概率。 呵呵。 |
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