good luck, agassi

By snake at 12:50 pm on August 28, 2006 | No comments

美网明天开赛, 阿加西的告别演出了.

20年啊, 阿加西没有缺席过一次美网.

94和99两次夺冠, 与桑普拉斯的4次经典对决, 获胜后抛向观众的飞吻, 一切的一切, 将要划上一个句号了.

A Fitting Finale

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interesting news this week

By snake at 11:17 pm on August 27, 2006 | No comments

- Poincare conjecture proof completed and the guy who rejected Fields medal
new york times
new yorker

- Give your name pad “planet” back, Pluto!
bbc news
new york times

- and finally, they say dark matter exists.
cv 1, 2

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a tough one

By snake at 4:20 pm on August 26, 2006 | 1 Comment

2006-08-26, Saturday

Watford 1, United 2

bad news, Rio Ferdinand may suffer a broken toe.

Watford: Lee, Doyley, DeMerit, Shittu, Powell, Young, Francis (g, 34), Mahon (Bangoura, 75) , Bouazza (Spring, 31), King, Henderson (Stewart, 65)

United: Van der Sar, O’Shea, Ferdinand, Brown, Silvestre (g, 12), Fletcher, Carrick (Richardson, 75), Ronaldo, Giggs (g, 52), Saha, Solskjaer (Park, 60)

manutd official
espn soccernet

sina sports

update: ferdinand only has a bruising, fine for next game.

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still looking

By snake at 11:22 pm on August 25, 2006 | 1 Comment

Well, still trying to find the damn ions. Just want to make a list of things that maybe go wrong:

1) Imaging system
If not focusing well, the fluorescence may spread out into too may pixels.

2) Mg oven
We are not sure the oven is working or not.

3) Ionization laser
Is the frequency right? We are not sure.
Is the power enough? I think we had a decent mount of power now: 2mW with 50 um wasit, almost 100 times of saturation intensity.

4) Cooling laser
Is the frequeny right? maybe, the i2 feature seems to suggust we are all right.
Is the power enough? 600 uW with 50 um waist, 30 times of saturation intensity, should be ok.

5) Trap
Well, we really don’t know if it’s working untill a. we trap ions, b. we run out of patience.

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still good even without rooney and scholes

By snake at 11:33 pm on August 23, 2006 | 1 Comment

2006-08-23, Wednesday

Charlton 0, United 3

Charlton Athletic: Carson, Young, El Karkouri, Fortune, Hreidarsson, Hughes, Holland, Faye, Ambrose, Hasselbaink (M Bent, 65), D Bent.

United: Van der Sar, Brown, Silvestre, Ferdinand, Evra, Fletcher (g, 49), O’Shea, Ronaldo, Giggs (Solskjaer (g, 90), 82), Saha (g, 80), Park (Carrick, 77).

manutd official
espn soccernet

sina sports

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photon budget

By snake at 11:23 pm on | No comments

The linewidth of the cycling transition is 45MHz, so let’s suppose the cycling laser is well above the saturation, then half of the time one single ion will be in the excited state, and it’s gonna fluoresce at a rate 22.5M photons per second.

The overall detection efficiency of the imaging system is about 1%, which includes effects due to the ion’s dipole radiation pattern, the solid angle of the detection system, losses in the optics. So only 225k photons make into the ccd camera per second.

The ccd camera claims to have a quantum efficiency 35%, so only 79k photons will be capatured and produce photoelectrons. If the gain setting is 1, then every 23 electrons will trigger an A/D count, so we should observe 3.4k counts per second.

The exposure time is set at 0.5 second, then we should expect 1.7k counts. If the light is smeared out over 10×10 pixels, we will only get an average 17 counts per pixel, which is at the noise range. Need to improve the image system. ft.

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A Beautiful Start

By snake at 12:20 pm on August 21, 2006 | 1 Comment

2006-08-20, Sunday,

United 5, Fulham 1
@ Old Trafford

United: Van der Sar, Neville (c) (Silvestre, 46), Ferdinand (og 40), Brown, Evra, Ronaldo (g 19), O’Shea, Scholes, Giggs (Park, 61), Rooney (g, 16 & 64), Saha (g, 7) (Solskjaer, 61).

Fulham: Niemi, Pearce (og, 15), Christanval, Queudrue, Rosenior, Diop, Brown (Radzinksi, 61), Bullard, Boa Morte (c), Helguson, John.

manutd official
espn soccernet

sina sports

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Manchester United 06-07 Season

By snake at 11:23 pm on August 20, 2006 | 1 Comment

不知不觉中竟然一年就这么过去了. 当初许诺的全程记录曼联赛季的计划, 也在冠军杯小组赛就遭淘汰后不了了之. 经过一个夏天喧闹的世界杯, 英超联赛的序幕也在不知不觉中拉开. 展望新的赛季, 曼联想冲击切尔西的冠军宝座还有一定的困难, 但比起去年来, 希望大了那么一点. 今年的阵容看起来要齐整许多.

门将:
1 Van der Sar
29 Tomasz Kuszczak

van der Sar老是老了点, 但还算稳健. Howard不甘心替补, 租借给了埃弗顿. 新引进的替补门将Kuszczak长期效力保级球队, 实力还不错.

后卫:
2 Gary Neville
3 Patrice Evra
4 Gabriel Heinze
5 Rio Ferdinand
6 Wes Brown
16 Nemanja Vidic
26 Phil Bardsley
27 Mikael Silvestre

后卫线上增加新鲜血液, 今年年初引进的Evra和Vidic, 都是后卫. 中卫主力应该是Ferdinand和Silvestre, 替补Vidic和Brown, 很整齐. 左边Heinze是绝对主力, 但世界杯时候拼得太凶, 去年联赛的伤势还没有完全恢复, 赛季初应该由Evra顶替. 右边Neville还是老当益壮, 只要不受伤. 替补小将Bradsley, Brown也能偶尔凑数. 主力预测是Heinze, Silvestre, Ferdinand, Neville.

中场:
7 Cristiano Ronaldo
11 Ryan Giggs
13 Park Ji-sung
14 Alan Smith
16 Michael Carrick
17 Liam Miller
18 Paul Scholes
23 Kieran Richardson
24 Darren Fletcher
25. David Jones

今年的最大一笔收购: 1860万英镑签下前热刺队长Carrick. 如果正常发挥的话, 防守型中场的位置总算有了点保证. Keane走后, 曼联的腰就一直没挺直过. 中路方面, 前腰还是Scholes, 状态好的话还是没有问题, 就是不知道能不能撑上一个赛季; 后腰有Miller, 还年轻, Smith, 伤还没好; 左边Giggs, 替补朴智星和Richardson; 右边C罗, 替补Fletcher. 曼联还在着力收购Hargreaves. 看过世界杯英格兰比赛的人都应该知道, Hargreaves在防守中场位置上绝对是Keane翻版, 明显强于Carrick. 如果收购成功的话, 我看好曼联英超夺冠. 另一后腰人选是西班牙国脚塞纳.

前锋:
8 Wayne Rooney
9 Louis Saha
19 Giuseppe Rossi
20 Ole Gunnar Solskjaer

前锋方面, 与Ferguson关系无法调和的范尼被送去皇马, 身价竟然只有1000万英镑, 比不上Carrick, ft, 再怎么说范尼也是每两场进一球的人物啊. 主力应该是Rooney和Saha, 实力还行, 再加上曼联中场攻击力很强, 进球应该还是有保证. 福将Solskjaer终于伤愈复出了, 加上从预备队上来的Rossi, 这两个替补显得有点单薄. 谣言的转会人选有阿德里亚诺、库伊特和托雷斯. 库伊特去了利物浦, 阿德难度比较大, 托雷斯这种帅哥型人物, 曼联有C罗一个就足够了. 另有谣传说国米的马丁斯, 这个可能性倒是有, 马丁斯在国米已经没位置了.

成绩预测:
如前所言, 如果引进Hargreaves成功, 我看好联赛夺冠; 如果再买个实用点的前锋来, 冠军杯我看好能进四强.

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