h****a
发帖数: 127 | 1 We both are 2P. Booked the same flight. My UDU is still pending while my LD
upgrade is confirmed already.
The flight is a month away. I thought 2P only get confirmed 2 days before
flight for UDU. |
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h****a
发帖数: 127 | 2 Sorry for any mis-understanding. But my point is the cert. is for 1000 mile
upgrade while the flight is 1800 mile. Being a 2P, the chance of UDU is
quite low, so for what it worth, the cert. maybe quite handy and useful.
It was my LD's itinerarie, it shows her UDU is pending and 1st class is
confirmed. I don't know why she was assigned both NP and E+ seats. |
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c*******h
发帖数: 1096 | 3 If A is diagonalizable, let A=UDU^{-1} where U and D contain eigenvectors
and eigenvalues. Then exp(A)=exp(UDU^{-1})=U*exp(D)*U^{-1}.
If B is very small w.r.t. A, consider it a perturbation to A. Then
sensitivity
theorems on eigenvectors and eigenvalues of A can be applied under some
conditions. All what says is that differences between eigenvectors/
eigenvalues
of A and those of A+B can be bounded. Hence the difference between exp(A)
and exp(A+B) can be bounded.
In other words, using exp(A) to |
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m***n
发帖数: 690 | 4 你原帖说美国国内都飞头等舱，UA 1K也只能升一级吧，除非你国内航班本来都是买的
商务舱。
当然你可以说飞的都是那种只有经济舱和头等舱，没商务舱的飞机。
去年因为UA的DEQM，1K今年那是大把抓，UDU和SWU成功率都不是那么高 |
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z*****u
发帖数: 322 | 5 荣总，UA里程换的XY票，美国国内的航班能UDU不？还是只能老老实实的坐E+舱？ |
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j***g
发帖数: 11325 | 6 这个UDU刚刚出来，俺还没时间研究呢，呵呵。
不过如果照DL的情况推测，如果不是GS/1K估计就没法升吧。（纯属臆测）
今天知道UA 1P Paid Ticket可以带人升舱，这在DL是不行的 |
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L**********A
发帖数: 7115 | 7 理论上2p 也可以带一个companion UDU
my itinerary 里面可以直接看到 |
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s******x
发帖数: 15232 | 8 对啊，看起来就是UDU在起作用
估计那个AGENT和楼主交流有误吧。
如果真是要PENDING到WINDOW里的话，根本没有任何用处 |
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s******x
发帖数: 15232 | 9 老兄你也太能误导人了.....
看来你LD的是被用了certificate，所以已经confirmed了
你是用UDU，所以现在是pending
害得大家瞎琢磨了半天
LD |
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l**o
发帖数: 1240 | 10 免费飞是真的，但是每次都是头等舱就是瞎掰了
公司的员工只有standby是免费的，有空座就可以飞，
现在各大航空公司都是UDU，头等舱基本上不可能空，都是给paid fare的人准备的 |
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h***o
发帖数: 5030 | 12 1K/GS gets UDU on domestic anyway
hehe |
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d*****e
发帖数: 157 | 13 My understanding is that CO calculates this based on progress from the
current elite level (75K) to next elite level (100K). So yours is likely (
81225-75000)/(100000-75000)=24%.
You should consider linking your CO and UA accounts now to optimize EUA/UDU
(free domestic upgrade) chances on flights operated by CO and UA.
SWU earned this year would require W fare class or above in order to upgrade
. If you need get tickets for parents/elderly relatives, using SWU with W
fare is very likely a bette... 阅读全帖 |
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l**t
发帖数: 452 | 14 It sounds right. It would be interesting to see what is going to happen
after I fly another 19K.
I always get CO domestic upgrade. But I am not sure how it works. Can you
give me more hints please?
I don't know about W fare either. But B/Y class in CO is very useful for
elite mileage accumulation with reasonable cost.
UDU
upgrade |
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l**t
发帖数: 452 | 15 You are correct, deltame!
I flew one more time to China last month, and receive total 4 Regional
Upgrade and 6 System Wide Upgrade so far. How can I sell them to who need
them?
UDU
upgrade |
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T*P
发帖数: 2697 | 16 在我看来还是小，呵呵，CO那种16个first class的飞机我都觉得小，国内航班我喜欢
UA
24个first class的航班，这样的UDU升舱都比较容易clear，更不要说用CR1了，相对
来说吃得也好些。不过没关系，你这次属于中奖了，建议发包子平衡一下RP:)
200的 大飞机 啊
好歹 tpa-iah |
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t********o
发帖数: 10 | 19 ABOUT SCHMIDT, ABOUT LIFE
很久没写东西了，今天看了JACK NICHOLSON 02年的片子 ABOUT SCHMIDT，感慨良多，以
前也看过一些此片的影评，多半认为此片是讲一个退休老人重新审视自己的生活，重新开
始自己新的生活，笔者以为没有写到顶子上，并没有完全了解ALEXANDER
PAYNE和我们的JACK的良苦用心，于是写了这篇观后感。
看完此片，笔者心情难以平静，并认为这是近几年来好莱坞难得一见的佳作，从表面上来
看，好像是在讲一个保险公司的副主席退休以后的生活，但是如果真是这样的主题，又怎
能引起演戏已经演成精的JACK的注意？各位再后头想想影片的最主要矛盾是什么？就是SH
MIDT从对女婿一家的不认同到婚后聚餐上的一番言不由衷的皆大欢喜的祝词，然后在给NG
UDU的信里首次承认自己失败了。失败，这才是我们的导演和JACK要告诉我们的。要理解
此片，就必须了解此片的社会背景，此片拍摄于2002年，主要针对的观众是中老年观众，
这批观众主要是二战后成长的一代，也就是新美国一代，这一代人的主要特征就是自信，
肯干，野心勃勃，这些当然都是优点，当然过了 |
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c**c
发帖数: 39 | 20 S is the sample covariance matrix of a random vector X.
From singular value decomposition,
S=UDU'
Partition the columns of U as (U1,U2).
W is the sample covariance matrix of vec(S), that is, the sample fourth-
moments of the random vector X.
The singular value decomposition of W is
W=AGA'
Hence, the inverse of W is Winv= A(G^-1)A'.
Define
kx as kronecker product,
and define two quadratic forms
L1=y'(U2'kxU2')Winv(U2kxU2)y = y'(U2'kxU2')A(G^-1)A'(U2kxU2)y
L2=y'(U2'kxU2')(G^-1)(U2kxU2)y
The questi |
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J**********g
发帖数: 213 | 21 1. if X=UDU^T, where U is orthogonormal, ie, UU^T=I, D=diag[d_1,...,d_n] is
the eigenvalue matrix, then
exp(X)=Uexp(D)U^T=U diag[exp(d_1),...,exp(d_n)] U^T.
I don't know if this what they were looking for. |
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