a*****i
发帖数: 4391 | 1 The Wizard of... Series, Simon Hawke.
Review Copyright 1999 Edward McArdle
[contains conceptual spoilers --AW]
This series of ten books is not actually science fiction, since it takes
place in a future where science has collapsed. So it is fantasy. Way back
in history the Dark Ones were confined by the Old Ones, and later magic
was forgotten after the disappearance of Merlin. When science collapsed,
when all the fuels ran out, and so on, Merlin was found imprisoned in a
tree. H |
|
a*****i
发帖数: 4391 | 2 You are the first one that says this TV series is better than the original
David Lynch movie. :)
I never watched the first movie, but I read some part of the book. (reading it)
Paul is apparently a more decisive and a natural leader, none of the luke
skywalker personality of the dude in the mini series.
The story telling was just so,so. It did poorly in explaining the whatabout
of the space navigation, the relationships between the houses, etc. Though
I could forgive that because of the restrain |
|
d*****t
发帖数: 5 | 3 When I came to USA in 1998, I saw a SciFi TV series on pulic channels. Could
not remember the name of the series exactly, but it contained something like
"horizon" and "limit". And it is usually played late at night, about once a
week.
I watched about 5-10 episodes. Most of them are very well-written. I did not
like it at first, because the style was too hard and the endings were often
harsh, not happy endings. (In one episode, the boss of a robot
research/manufacturing co. brought home a robot |
|
cp
发帖数: 183 | 4 If you have trouble viewing or submitting this form, you can fill it out
online:
http://spreadsheets.google.com/viewform?formkey=cnl2OS1fdFQyd2hZNFNqQjN6bmVWSnc6MA..
PKUAA-NC "Cleantech Forum Series" #2 - Meet with ENN Solar Energy Co. Ltd.
Co-founder Dr. De-Ling Zhou
Dear alumni & friends:
As the 2nd event of our PKUAA-NC "Cleantech Forum Series", we welcome you to
join us this coming Sunday (6/21/2009), to meet with Dr. De-Ling Zhou, who
is our alumni and now the president of ENN Science & Tec |
|
cp
发帖数: 183 | 5 For RSVP, please fill out the online form at:
http://spreadsheets.google.com/viewform?formkey=dEtqZHU2al9qLUhZR0x4S2JnR2NhOFE6MA
PKUAA-NC "Cleantech Forum Series" #4 - Li-ion Technologies for HEV and PHEV,
by Dr. Jun Liu
Dear alumni & friends:
As the 4th event of our PKUAA-NC "Cleantech Forum Series", we welcome you to
join us on Saturday (11/14/2009) with Dr. Jun Liu, who is our alumni from
Chemistry Department, and has been workign in battery technology for 20+
years. He's now the VP of R&D at |
|
|
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s*******d
发帖数: 64 | 8 想搞台笔记本 在这三个品牌间比
以前一直ibm 想换个品牌的用用。对这三个都不熟悉，还请各位给推荐一下
dell xps 15 貌似性价比还不赖
sumsong series 9 的特点是什么？
sony z 价格狂高，其他哪个系列能和dell xps sumsung series 9能对应？
多谢 |
|
d********3
发帖数: 7220 | 9 我的三星series 9入手也快一个月了，上个review，也和版上的z930呼应一下。当初没
入Toshiba的原因是摸了以后觉得做工有点cheap，展示本本的hinge很松，不过我摸的
好像是830，9系的不知如何
zenbook prime前面说过全金属壳做的感觉太山寨，而且webcam都是坑爹的0.3MP，不知
道新版本有没有改善，所以毫不犹豫pass了
最后入的series9，z930楼主说的接口少是个问题，只有一个USB3.0+2.0，micro HDMI
，VGA和以太网卡都要adaptor，但这对我不是问题，这两个我本来就用不太到。另外SD
卡插进去后会露出一截，我本想买个128G的SD卡做扩展，只好打消念头
我win8、7和XP也都折腾过，三星的驱动支持出乎我的意料，各种版本运行都无鸭梨。
我买了crucial的256 GB的m4换上去后fresh install Windows7，所有软件都放在D区，
关掉hibernation和Pagefile以后C盘约16G，用Acronis备份出来的image大约7、8G，经
济适用
三星的屏幕非常棒，可能是我用过的最漂亮的，... 阅读全帖 |
|
F*****g
发帖数: 95 | 10 好本！ 好评测！
我本来打算入15寸的series 9， 但是想想又怕到时需要玩游戏，就从了series 7 的。
机子还没到，真期待！ |
|
d********3
发帖数: 7220 | 11 我的三星series 9入手也快一个月了，上个review，也和版上的z930呼应一下。当初没
入Toshiba的原因是摸了以后觉得做工有点cheap，展示本本的hinge很松，不过我摸的
好像是830，9系的不知如何
zenbook prime前面说过全金属壳做的感觉太山寨，而且webcam都是坑爹的0.3MP，不知
道新版本有没有改善，所以毫不犹豫pass了
最后入的series9，z930楼主说的接口少是个问题，只有一个USB3.0+2.0，micro HDMI
，VGA和以太网卡都要adaptor，但这对我不是问题，这两个我本来就用不太到。另外SD
卡插进去后会露出一截，我本想买个128G的SD卡做扩展，只好打消念头
我win8、7和XP也都折腾过，三星的驱动支持出乎我的意料，各种版本运行都无鸭梨。
我买了crucial的256 GB的m4换上去后fresh install Windows7，所有软件都放在D区，
关掉hibernation和Pagefile以后C盘约16G，用Acronis备份出来的image大约7、8G，经
济适用
三星的屏幕非常棒，可能是我用过的最漂亮的，... 阅读全帖 |
|
F*****g
发帖数: 95 | 12 好本！ 好评测！
我本来打算入15寸的series 9， 但是想想又怕到时需要玩游戏，就从了series 7 的。
机子还没到，真期待！ |
|
y****a
发帖数: 1140 | 13 【 以下文字转载自 amazondeal 俱乐部 】
发信人: yangwa (阳阳), 信区: amazondeal
标 题: SSD | $149.99 50% off Intel 530 Series 240GB 2.5-Inch Internal
Solid State Drive, Model SSDSC2BW24
发信站: BBS 未名空间站 (Tue Nov 19 12:45:16 2013, 美东)
$149.99 ($300, 50% off) Intel 530 Series 240GB 2.5-Inch Internal Solid State
Drive, Model SSDSC2BW240A4K5
http://www.amazon.com/Intel-2-5-Inch-Internal-Reseller-SSDSC2BW |
|
y****a
发帖数: 1140 | 14 【 以下文字转载自 amazondeal 俱乐部 】
发信人: yangwa (阳阳), 信区: amazondeal
标 题: 硬盘 | $560 34% off Samsung Electronics 840 EVO-Series 1TB 2.5-Inch SATA III Single Unit Version
发信站: BBS 未名空间站 (Thu Nov 21 04:01:52 2013, 美东)
$560 ($849.99, 34% off) Samsung Electronics 840 EVO-Series 1TB 2.5-Inch SATA
III Single Unit Version Internal Solid State Drive
http://www.amazon.com/Samsung-Electronics-2-5-Inch-Internal-MZ- |
|
l**********3
发帖数: 12 | 15 I have passed P & FM,too.
glad to have a honor with you~
I'm a college student,we can apply for VEE without company,
the VEE with stastistical, you need to pass regression analysis and time
series,when you done ,
all you need to prepare to apply :
1. 英文成績單：請在學校申請英文成績單，並加註 GPA 等級。
your grades of regression analysis and time series in English
GPA means A+ ,A-,B+,B- , at least 70 = at leat B-
2. 填寫 VEE 認證申請書
but I'm not prepare to do it, because I have not achieved
"corporation financial " gr |
|
F**********e
发帖数: 2135 | 16 这个考试就是例行公事，随便看看书没有不过的。太简单以至于大家纷纷拿它打赌，从
博克上抄一段吧：
“
再比如每个人的Series 7, Series 66考试都给做了个期货产品，考前两个月就开市交
易了，规则如下：预期考分当作股价，5股一手，一般每次交易1-8手。股价每天都会浮
动，浮动的原因有二：1）企业表现：比如应考的昨天做了套测试题，分数一发布，市
场价格立即波动；2）市场交易推动。每个人发表对市场的看法，企图说服其他投资者
在自己的盘里建仓——不管输赢如何，这个给价要价差额（bid-offer spread）总是拿
到手了。更高级的交易员，比如说大老板，扮演的简直是投行的角色。在我的Sr 7考试
产品，低价83大量吃进，然后鼓动如簧之舌一路推动市场走高，等价位到了88附近开始
抛出。和真正的股票市场不同，在这里抛售得找到愿意接手的下家。老板摆事实讲道理
吹牛皮开玩笑，不知不觉之中居然就被他给全卖光了——不管将来考分如何已经净赚
100来块。不过来的快去的也快，他一高兴又在90左右买了40股，据他的说法是“对我
的激励”。
”
其实还有更猛的，在DEShaw的朋友说，他们的赌法是1 |
|
S**O
发帖数: 261 | 17 【 以下文字转载自 Statistics 讨论区 】
发信人: SERO (SERO_REF), 信区: Statistics
标 题: Time Series interview question?
发信站: BBS 未名空间站 (Mon Nov 30 14:29:47 2015, 美东)
I will be interviewed for a risk analyst position in a bank in NY. Most of
works are related to loss forecasting. I'm not very familiar with time
series, just some basic knowledge.
What kind of interview questions are common for this position? Any
suggestion?Thanks. |
|
k***s
发帖数: 370 | 18 H SERIES AUDIOVISUAL AND MULTIMEDIA SYSTEMS
Characteristics of transmission channels used for other than telephone purposes
H.13 (11/88) Impulsive noise measuring equipment for telephone-type circuits
This Recommendation is published under alias number O.71
H.16 (10/84) Characteristics of an impulsive-noise measuring instrument for wideband data transmission
This Recommendation is also included but not published in O series under alias number O.72
Red Book Fascicle III.4
Characteris |
|
P*******t
发帖数: 202 | 19 is there some power series that are not Taylor series of any function? |
|
q*****z
发帖数: 191 | 20 Hi,
I have been thinking about the question of how to use ratio test to estimate
the radius of convergence of a power series when it only has even or odd
terms. For example, I have a complicated power series f(x):
f(x) = 1+f2*x^2+f4*x^4+...
To do a ratio test, estimate the following limit:
lim(fn/fn+2)
Then the value obtained is radio of convergence, but is it r or r^2? The
unit matches with r^2 but I haven't seen such things anywhere.
Thanks. |
|
b***k
发帖数: 2673 | 21 ☆─────────────────────────────────────☆
Cyrix (The CPU) 于 (Sun Jun 1 14:44:58 2008) 提到:
比如基金的trader或经理
还是只是IBD S&T才需要？
谢。
☆─────────────────────────────────────☆
bruclee (didibabawuuuu) 于 (Sun Jun 1 18:37:33 2008) 提到:
Series 7 is for brokerage firm not for buy side.
☆─────────────────────────────────────☆
tribeca (Cointegration) 于 (Mon Jun 2 00:40:09 2008) 提到:
you need series 7 and other shit if you are a prop trader at an iBank.
☆─────────────────────────────────────☆
Cyri |
|
i**p
发帖数: 205 | 22 series 3 不知道。我用Kaplan series 7 drill and practice CD， 再去图书管借书
对照看一看。
HTH。。。 |
|
q********u
发帖数: 53 | 23 1) calculate the kurtosis. Testing the hypothesis of kurtosis is 3 given
the data size. We can determine (3) non normal case.
2) I guess single plot we can get the delta_x we can get the volatility
should be a time trend. We can determine (2) vol is a time trend
3) investigate the epsilon. epsilon should behave like white noise.
Investigate the ACF which should be get the gaussian series for lag>=1 the
series is within confidence band.
Any other thoughts? |
|
t********a
发帖数: 810 | 24
not really. sell side trading, sales, and research typically all have series
7. series 55 is for traders. |
|
K***a
发帖数: 32 | 25 【 以下文字转载自 Business 讨论区 】
发信人: Keira (keira), 信区: Business
标 题: Series 7 Exam
发信站: BBS 未名空间站 (Fri Feb 11 16:56:36 2011, 美东)
Hi, My company encourage and sponsor employee to study for Series 7 Exam.
Has anyone ever taken or is going to take it? I would appreiciate if you
could share your experience with me. |
|
R********n
发帖数: 519 | 26 我理解第二条是针对input time series，分析什么时候适合用AR或MA。对于适合用AR
的series，应该是autocorrelations function呈现出一种渐进下降的趋势（从r=0起） |
|
k*****y
发帖数: 744 | 27 同问，除了翻翻Time Series Applications to Finance by Ngai Hang Chan和Time
Series Analysis by James Hamilton这两本?
还有实际工作中会用到些什么?用来fit ARMA和GARCH?还是要generalize这些models?
Thanks. |
|
y*********m
发帖数: 33 | 28 拿到几个面试，都涉及一些time series的问题。这些工作都不是专门搞时间序列的，
但要求要懂基本偏上一些的东西，尤其是关于具体怎么计算的。
哪位能推荐一些关于time series的书？谢谢了！最好是有很多例子/worked example的
那种，这样的话会比较了解了解实际怎么应用。再次感谢！ |
|
y*********m
发帖数: 33 | 29 拿到几个面试，都涉及一些time series的问题。这些工作都不是专门搞时间序列的，
但要求要懂基本偏上一些的东西，尤其是关于具体怎么计算的。
哪位能推荐一些关于time series的书？谢谢了！最好是有很多例子/worked example的
那种，这样的话会比较了解了解实际怎么应用。再次感谢！ |
|
p***n
发帖数: 27 | 30 帮朋友问一下。【RIA, Series 65, 公司和考证参考书, etc.】
她想成为Registered Investment Advisor (RIA), 从part-time开始，请问有什么好的
建议吗？比如说申请哪些公司比较合适？
另外，她还没有什么证书，我说需要至少考Series 65.请问哪个参考书比较好？有下载
的更好。谢谢！ |
|
J**C
发帖数: 193 | 31 最近需要考SERIES 6,(考过之后还要继续考63),如果考不过的话会丢工作的了.
最近在看书,公司用的教材是一家叫REGED的公司的,厚厚的一本,然后平时网上的自测什
么的也都是REGED的题,但做起来感觉特别辛苦,因为觉得他们考得特别细,每一个TOPIC
有几百种不同的考法,做着自测越做越没有信心了,因为每次碰到题目都觉得怎么考的地
方我没看到,然后又跑回去看书.
现在的情况下是对整个考试内容的框架都有了解了,但很多教材里的细节让我感到有点
心烦.例如1940年的法令条例,书上列出了细节,但不确定这些细节是不是都需要全部详
细地背下来.感觉有点吃力.
公司给准备考试的时间不是很多,虽然目前是不用做日常工作,每天上班就看书和做题就
可以了,但一共也只有3周的时间,目前已经过了一大半了,下周五就是正式的考试.感觉
心里还是很没底.
SERIES 6的KAPLAN的教材也买了,因为很多人在推荐.但不知道是不是值得再花大量的时
间把KAPLAN也精读一次.
另外是KAPLAN网站上还有卖一个QBANK,据说那个题库非常接近实际的题目,有没有必要
买来自测然后增强信心?
不知道自己包子有多... 阅读全帖 |
|
S**O
发帖数: 261 | 32 【 以下文字转载自 Statistics 讨论区 】
发信人: SERO (SERO_REF), 信区: Statistics
标 题: Time Series interview question?
发信站: BBS 未名空间站 (Mon Nov 30 14:29:47 2015, 美东)
I will be interviewed for a risk analyst position in a bank in NY. Most of
works are related to loss forecasting. I'm not very familiar with time
series, just some basic knowledge.
What kind of interview questions are common for this position? Any
suggestion?Thanks. |
|
B***y
发帖数: 83 | 33
If | b | > 1 then the series will be divergent.
If | b | < 1 then the series will be convergent.
The interesting case happens when |b| = 1, hmm... |
|
B***y
发帖数: 83 | 34
Notice that it is a second order iteration equation, thus first write it as a
vector equation:
Y_(n+1) = A(n) * Y_(n) ,
where Y_n = (a(2n-1), a(2n))^t, where "t" means "transpose".
Easy to check that A(n) asymptotically behaves like (b 0
0 b )
Thus if |b| > 1, then the series Y_n will diverge, if |b|< 1 then the series
will converge. |
|
s**a
发帖数: 8648 | 35 *Tilly Panel Series at 2009 SSHA: Charles Tilly’s and Louise Tilly’s
Work and Legacy*
*November 13-14, 2009 (Friday and Saturday)*
34th Annual Social Science History Association Meeting, Long Beach, CA,
12-15 November 2009, on the Queen Mary
Conference Theme: “Agency and Action”
The 2009 SSHA conference features a presidential panel series of 4
panels and over 20 speakers devoted to Charles Tilly’s and Louise
Tilly’s work and legacy. The conference also features the inaugural
presentation of the |
|
n*****s
发帖数: 2 | 36 @book{Full:1996,
author = {Fuller, Wayne A.},
title = {Introduction to statistical time series},
year = {1996},
pages = {698},
ISBN = {0-471-5523},
publisher = {John Wiley \& Sons}
}
@book{Bril:1981,
author = {Brillinger, David R.},
title = {Time series: data analysis and theory},
year = {1981},
pages = {540},
ISBN = {0-07-007852-1},
publisher = {McGraw-Hill, Inc}
} |
|
d**********l
发帖数: 183 | 37 如果covariate里有time series 的regressor， response也是time series。这样的情
况下做linear regression是不是有些复杂？就我目前的理解是如果x和y都是
stationary的过程，或者如果x和y是cointegrated的，是可以直接做linear
regression只不过error的pattern 是stochastic的。
请问牛人们我的理解对吗？
如果y是stationary， x是i（1）那么是不是要把x difference 一次再对y 和diff（x)
做regression呢？
谢谢大虾的回答。 |
|
s**********e
发帖数: 46 | 38 This IS a problem of time series analysis although you only have 10 time
points. If you want the relations of X(t+1) or Y(t+1) with X(t) or Y(t), you
can try multivariate autoregressive model (AR(1)). By fitting a vector AR(1
), one thing you have to be careful is that your data is including two time
series (10 points) with multiple realizations (70 patients).
Another thing you may have to keep in mind is that AR model assumes
stationary process. You may have to check your data if it is close to |
|
F*******1
发帖数: 75 | 39 非常感谢!
不好意思,再问一个问题.
如果我准备 fit series x as a AR(1). 那用Dickey-Fuller test 的时侯,我只要给出
adf=(1)如下所示,还是要试很多autoregressive orders to make sure series x is
stationary at different orders? 谢谢!
proc arima data=test;
identify var=x stationarity=(adf=(1));
run; |
|
g*******y
发帖数: 380 | 40 Could you send it to my email: y****[email protected]
Also do you have the following books:
"SAS for Forecasting Time Series "
"An Introduction to Time Series Analysis and Forecasting: with Applications
of SAS and SPSS"
Thank you very much! |
|
t******y
发帖数: 949 | 41 如果output series要取first differencing,input series是不是也要同步取 first
differencing, 还是两者没有关系？
比如
identify var=y(1) crosscorr=(x1(1) x2(1))
谢谢 |
|
P*******9
发帖数: 9700 | 42 only Y has time series observation? How about independent variables?
the time series part, we are assuming all Y's are correlated, I do not know
how to explain that |
|
y*********m
发帖数: 33 | 43 拿到几个面试，都涉及一些time series的问题。这些工作都不是专门搞时间序列的，
但要求要懂基本偏上一些的东西，尤其是关于具体怎么计算的。
哪位能推荐一些关于time series的书？谢谢了！最好是有很多例子/worked example的
那种，这样的话会比较了解了解实际怎么应用。再次感谢！ |
|
v*******e
发帖数: 133 | 44 不要笑。平时做的都是应用。理论不太好。
1.通常说的 13 week moving average，就是第一个forecast将取前13个观察到的值的
平均，之后第二个forecast是最后12个观察到的值加上前一个forecast的平均值。可以
算作是ARIMA里面的哪一种吗？比如ARIMA(0,0,1) or ARIMA(0,0,13)? 还是这里说的
moving average和ARIMA里的moving average那部分不是同一个概念吧。
而且这种13 week moving average并不要求assumptions, 比如 stationarity in
ARIMA，那么最后结果和ARIMA(0,0,1)有什么区别呢？
2. 通常ARIMA, 比如我在identification stage观察ACF, the series is
nonstationary, 然后我difference the series to be stationary, and white noise
test failed indicating an AR or MA needs to b... 阅读全帖 |
|
|
s*****n
发帖数: 2174 | 46 +1
一般longitudinal都有多个subjects, 每个subject有若干observations over time.
time series一般只有一个subject, 但是这个subject有很多observations over time.
所以longitudinal study需要考虑样本间的统计性质, 只是要注意observations之间的
intra-correlation.
而time series study一般不是考虑样本间的统计性质, 而是注重在自身的这一个序列
内部找关系.
one |
|
s********1
发帖数: 54 | 47 Recently, I got an onsite interview. But I have to prepare time series. Who
can give me some advice how I should prepare the questions regarding to time
series? Can you provide me the website or book to refer this knowledge?
Thank you so much. |
|
w******e
发帖数: 142 | 48 看芝加哥的tsay老大的课件就基本差不多了
http://faculty.chicagobooth.edu/ruey.tsay/teaching/
金融相关的看
Business 41202: Analysis of Financial Time Series
一般的对应各种行业的看
Business 41910:Time Series Analysis for Forecasting and Model Building
个人觉得如果面试不要碰见大牛tsay讲得东西应该都够了。
Who
time |
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p*******y
发帖数: 125 | 49 读书的时候没有选 time series 课，真后悔啊！
现在要面试的公司重点要求 time series，
我该怎么突击一下，以应付面试啊？
万分感激！ |
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