|
f**********d 发帖数: 4960 | 2 f(x,y)求极值
x,y都是scalar那当然好说
fxx fyy-fxy fxy是jacobian行列式为正时有极值
现在问题是如果y是一个矩阵 如何判定? |
|
f********y 发帖数: 32 | 3 Here are some statistical theory problems on Casella and Berger for the
comprehensive exam preparation. Your kind help is greatly appreciated.
Thanks.
1. X and Y are r.vs with bivariate pdf: Pxy=y*exp(-xy); x>1, 0
find the prob (x>1/Y)
2. X and Y are continous r.vs with joint density f given by fxy=3xy, 0
x
Find the prob (Y<1)
3. X and Y are jointly distributed as fxy=2*x*exp(-y), 0
E(x)=2/3, E(x^2) = 1/2, E(y)=1 E(y^2)=2, U=2*x+Y, V=Y
a) find the correlatio... 阅读全帖 |
|
S******t 发帖数: 8388 | 4 (A couple of these haven't started trading yet and a few
just started trading and therefore don't have much volume yet,
but special mention should be made for the new 300%
Russell ETFs which will make great trading vehicles once
volume picks up.) **trader168-David Liu**
US Indexes
DIA Dow30
DDM Dow30 2x long
DOG Dow30 short
DXD Dow30 2x short
ONEQ Nasdaq
QQQQ Nasdaq100
QLD Nasdaq100 2x long
PSQ Nasdaq100 short
QID Nasdaq100 2x short
OE... 阅读全帖 |
|
y***q 发帖数: 4147 | 5 【 以下文字转载自 Stockcafeteria 俱乐部 】
发信人: ShortCut (总想偷懒), 信区: Stockcafeteria
标 题: Re: 底部探明了没有???
发信站: BBS 未名空间站 (Thu Jun 10 11:40:46 2010, 美东)
过去收藏的:
US Indexes
DIA Dow30
DDM Dow30 2x long
DOG Dow30 short
DXD Dow30 2x short
ONEQ Nasdaq
QQQQ Nasdaq100
QLD Nasdaq100 2x long
PSQ Nasdaq100 short
QID Nasdaq100 2x short
OEF SP100
IOO SP100 Global
SPY SP500
SSO SP500 2x long
SH SP500 short
SDS SP500 2x short
IVV ... 阅读全帖 |
|
i***s 发帖数: 39120 | 6 根据这张表格,作为“工头”的队长、班长,月薪接近甚至超过万元,普通泥瓦匠月薪6600元,而壮工(没有专门技术)的月薪也在3000至4200元之间。
新闻解读:
你当真艳羡“民工工资表”吗?
一份“民工工资表”,令众多非民工群体“花容失色”。用诸多白领的话说,这一对比,敢情自己真心才是最底层的“屌丝”。羡慕当然不是没有道理:对比国家统计局发布的2011年平均工资主要数据来看,就算是最好的非私营单位在岗职工薪资(年平均工资42452元),以“民工工资表”观之,两三千的月薪比收入较低的“抹灰工”还要相差一大截。
但这样的“工资表”,显然已不是传说。稍有装修经验的都知道,眼下的“工价”确实要远超历史的想象。然而,这样的工资水平真的“逆天”了吗?一者,市场经济的基本逻辑就是供求决定价格,“现在的年轻人大多不愿从事装修工作”,加之“每年都有一批年老的装修师傅退休”,在装修的“刚需”面前,泥水师傅已是供不应求,工价高又何奇之有?二者,“提高劳动报酬在初次分配中的比重”已成为自上而下的共识,应该说,当下的民工工资在人口红利后理性归位,并不能说其薪资水平“高”了,只不过在初次分配中还原了其劳动价值的本来... 阅读全帖 |
|
|
m********0 发帖数: 2717 | 8 JAPAN:
EWJ
AAXJ
FXY
DXJ
SCJ
PAF
EZJ
JPP
TNOA
PJO
JYF |
|
g*****u 发帖数: 14294 | 9 码工上班来了。
符合条件的上百吧。筛选严格一点,就这些:
AGG
AGZ
AHD
ANN
CHK
CHS
CMF
CNX
COG
CRK
FXF
FXY
GBF
GLNG
GVI
IEF
IEI
IGOV
MLN
RBCN
SUB
SWN
TLH
TLT
UHS |
|
g*****u 发帖数: 14294 | 10 这下可以了吧:
ACI
ACOR
ADS
AGG
AGZ
AHD
AMSC
ANN
ASIA
BSFT
BWEN
CHC
CHK
CHS
CLR
CMF
CMG
CNW
CNX
COG
CPST
CRK
CRMD
DCTH
DENN
DG
DLR
DQ
ECA
ELON
EMSA
ES
EXAS
FAZ
FTR
FXF
FXY
GBF
GLNG
GLUU
GME
GSS
GVI
HGG
HYC
ICO
IEF
IEI
IGOV
INCY
INN
JRCC
KEM
LD
LULU
MFN
MLN
MUB
MXA
MY
NTAP
NVGN
NWBI
NYF
ODFL
PAY
PLCM
POT
PPO
PWAV
RBCN
RRC
SDS
SH
STND
SUB
SWN
TLH
TLT
UCBI
UHS
UUP
VHC
VR
VRD
WFMI
WNR
WPRT
YONG |
|
z****u 发帖数: 305 | 11 节选自环球财经(www.chineseworldnet.com)网站,有效期至当前,罗列所有到今天
(2011年3月18日)开盘为止创52周新高的股票,特此存档!
# 公司名稱 (代號) 開市價 最高價 最低價 收市價 成交量
1 PEABODY ENERGY (NYSE:BTU) 69.07 70.84 68 70.12 8,576,640
2 CAPSTONE TURBINE (NASDAQ:CPST) 1.85 1.88 1.76 1.77 7,400,432
3 CONSOL ENERGY (NYSE:CNX) 53.57 55.49 52.67 55.33 6,972,713
4 CSX (NYSE:CSX) 74.98 77.24 74.48 75.72 5,327,296
5 HECKMANN (NYSE:HEK) 6.18 6.35 6.12 6.21 4,064,357
6 WESTERN FOREST PRODUCTS (TSX:WEF) 0.96 1.23 0.96 1.18 3,921,072
7 AMERICAN CAPITAL AGENCY (NASDAQ:... 阅读全帖 |
|
j****9 发帖数: 2295 | 12 不管怎样。看看这几个明天表现
Japanese Yen ETF
Investors wishing to an alternative way to trade the JPY/USD or invest in
the Japanese Yen currency (JPY) have 5 ETFs sponsored by several ETF
providers that give long Yen exposure, double long Yen exposure, and double
short Yen exposure.
Long Yen ETF
CurrencyShares Japanese Yen Trust FXY
WisdomTree Dreyfus Japanese Yen JYF
iPath JPY/USD Exchange Rate ETN JYN
Double Long Yen ETF
Ultra Yen ProShares YCL
Double Short Yen ETF
UltraShort Yen ProShares ... 阅读全帖 |
|
b**2 发帖数: 1140 | 13 Is it a good time buy Japanese yen? If yes, is FXY a good fund to buy or any
other tool for paper trading? Thank you. |
|
w**k 发帖数: 6722 | 14 这里都是ETF
发包子吧
AADR AAIT AAXJ ACIM ACWI ACWV ACWX ADRA ADRD ADRE ADRU
ADZ AFK AGA AGF AGG AGLS AGND AGOL AGQ AGZ AGZD AIA
AIRR ALD ALFA ALTS AMJ AMLP AMPS AMU AMZA AND ANGL
AOA AOK AOM AOR ARGT ARKG ARKK ARKQ ARKW ASEA ASHR
ASHS AUNZ AUSE AXJL AXJS AXJV AYT AZIA BAB BABS BAL
BAR BBC BBH BBRC BCHP BCM BDCL BDCS BDD BFOR BIB BICK
BIK BIL BIS BIV BIZD BJK B... 阅读全帖 |
|
z*********o 发帖数: 206 | 15 转载一篇ETF介绍帖子给大家看看。
近一年国际市场风云变化,原油暴跌,俄罗斯陷入经济危机、卢布贬值,美股频遭唱空
……当这些新闻频上头条的时候是不是都在想:如果我也可以投机一把,去分一杯羹就
好了。这不是奢望,你其实完全可以在富途证券开一个美股账户,购买相关ETF就能投
资全球市场,实现捞一把的想法。
一、何为ETF?
ETF的英文全称是Exchange Traded Funds,它在中国大陆被译为“交易所交易基金”,
在香港被译为“交易所买卖基金”,在台湾被译为“指数股票型基金”。
ETF是一种跟踪市场指数、可以在证券交易所自由买卖的开放式股票基金。大家可以把
ETF理解为一种特殊形式的共同基金(Mutual Fund):发行机构把不同的股票买来,汇
合到一起形成共同基金,然后再分成一小块一小块拿到股市上卖,它们就成了可以自由
买卖的ETF指数基金。你买一支ETF就相当于购买了这个指数的所有成份股。
二、ETF有何优势?
1、投资品种多。
ETF在北美股票市场发展很快,有近一千种产品,而且种类繁多:有跟踪大盘指数的,
也有跟踪行业指数的,还有跟踪其它国家股市的……更有追踪债券价格、黄... 阅读全帖 |
|
|
|
|
|
|
e******7 发帖数: 504 | 21 请问一下stanford的退休账户里面能买那些和日元加拿大元相关的基金啊,试了一下
FXY不让买啊,
都那些可以买啊弟兄们?给点建议呗,有用的回帖发俩包子啊, |
|
m**2 发帖数: 401 | 22 请问版上大牛,下面这个帖子说的靠谱吗?谢谢
【美股ETF科普贴】如何用一个美股账户投资全球市场
近一年国际市场风云变化,原油暴跌,俄罗斯陷入经济危机、卢布贬值,美股频遭唱空
……当这些新闻频上头条的时候是不是都在想:如果我也可以投机一把,去分一杯羹就
好了。这不是奢望,你其实完全可以在富途证券开一个美股账户,购买相关ETF就能投
资全球市场,实现捞一把的想法。
一、何为ETF?
ETF的英文全称是Exchange Traded Funds,它在中国大陆被译为“交易所交易基金”,
在香港被译为“交易所买卖基金”,在台湾被译为“指数股票型基金”。
ETF是一种跟踪市场指数、可以在证券交易所自由买卖的开放式股票基金。大家可以把
ETF理解为一种特殊形式的共同基金(Mutual Fund):发行机构把不同的股票买来,汇
合到一起形成共同基金,然后再分成一小块一小块拿到股市上卖,它们就成了可以自由
买卖的ETF指数基金。你买一支ETF就相当于购买了这个指数的所有成份股。
二、ETF有何优势?
1、投资品种多。
ETF在北美股票市场发展很快,有近一千种产品,而且种类繁多:有跟踪大盘指数的,
也有跟... 阅读全帖 |
|
l********l 发帖数: 9452 | 23
.
什么error都是瞎扯鸡巴蛋,你看看dow crash前fxy发生了什么就知道了。。。
日元的carry trade搞死了大fund,it们只好不顾一切的抛stock去填空,stock market
的钱就被抽走了 |
|
|
N*******3 发帖数: 2589 | 25
“可以证明 EMN, FMN, DXY, FXY, 全等,(这个很简单)”
这一步就是关键,结果一个很简单过去了~~~ |
|
m***i 发帖数: 2013 | 26 Where on earth fxy is now? Uab? Singapore? Don't think he,ll do a full time
job in nju |
|
o****l 发帖数: 21 | 27 In 3D, you have 9 stress components: fxx,fyy,fzz,fxy,fyx,fxz,fzx,fyz and
fzy although only 6 of them are independent. So you have a 3 by 3 matrix
to reprensent the stresses. |
|
f*******u 发帖数: 6 | 28 Our apologies if you receive multiple copies of this Call for Papers
===================================================================
Journal of Biomedical Science and Engineering (JBiSE)
CALL FOR PAPERS
http://www.srpublishing.org/scirp/Journal/Home.aspx?JournalID=30
ISSN 1937-6871 (Print), 1937-688X (Online)
===================================================================
JBISE is an international refereed journal dedicated to the latest
advancement of biomedical sciences and eng |
|
f*******u 发帖数: 6 | 29 Our apologies if you receive multiple copies of this Call for Papers
===================================================================
Journal of Biomedical Science and Engineering (JBiSE)
CALL FOR PAPERS
http://www.srpublishing.org/scirp/Journal/Home.aspx?JournalID=30
ISSN 1937-6871 (Print), 1937-688X (Online)
===================================================================
JBISE is an international refereed journal dedicated to the latest
advancement of biomedical sciences and eng |
|
|
f*******u 发帖数: 6 | 31 We apologize if you receive multiple copies of this message
The 3rd International Conference on Bioinformatics and Biomedical
Engineering (iCBBE2009)
CALL FOR PAPERS
http://www.icbbe.org/
Beijing, China June 11-13, 2009
This conference is sponsored by IEEE Engineering in Medicine and Biology
Society (EMBS), Beijing Institute of Technology and Wuhan University. All
the papers accepted will be included in the IEEE Xplore and indexed by EI.
For more information, please contact: s****[email protected] |
|
f*******u 发帖数: 6 | 32 Our apologies if you receive multiple copies of this Call for Papers
===================================================================
Journal of Biomedical Science and Engineering (JBiSE)
CALL FOR PAPERS
http://www.srpublishing.org/scirp/Journal/Home.aspx?JournalID=30
ISSN 1937-6871 (Print), 1937-688X (Online)
===================================================================
JBISE is an international refereed journal dedicated to the latest
advancement of biomedical sciences and eng |
|
|
f*******u 发帖数: 6 | 34 We apologize if you receive multiple copies of this message
The 3rd International Conference on Bioinformatics and Biomedical
Engineering (iCBBE2009)
CALL FOR PAPERS
http://www.icbbe.org/
Beijing, China June 11-13, 2009
This conference is sponsored by IEEE Engineering in Medicine and Biology
Society (EMBS), Beijing Institute of Technology and Wuhan University. All
the papers accepted will be included in the IEEE Xplore and indexed by EI.
For more information, please contact: s****[email protected] |
|
|
|
|
w****l 发帖数: 6122 | 38 这几个trust的量也不小,适合日间的操作,比如aussie从年初到现在就是个上涨的趋
势。 |
|
f**********r 发帖数: 2137 | 39 options的量很小,不过这几个都有2x的正负版本可以玩 |
|
|
|
|
w****l 发帖数: 6122 | 43 fxy, 115 112的时候都有日本央行入场干预 |
|
|
g*****u 发帖数: 14294 | 45 俺的系统显示, FXE周线收在最重要的confluence of Fibbo retracement下面。下周
很多关键。
FXY这两周又回测高点啦。这个就看是再创新高还是整个123 formation breakdown.
英镑很可能已经扭转。 |
|