ice skating @ kallang leisure park

今天心血来潮去溜冰,本想去jurong east的那家,网上搜了下,发现现在大家都去的是kallang的一家,在kallang leisure park。这家是2007年开的,最早只有专业服务,后来对大众开放。因为这家距离我家很近,所以完全没必要去jurongeast那边了。又一查,没想到今天是circle line从paya lebar到dhoby Ghaut开始运行的第一天。 就和mm从paya lebar坐车到stadium站。出了stadium站一转身就是kallang leisure park了。另外一边就是indoor stadium了。 貌似今天是SHE和五月天的演唱会。 我们居然也跑过来凑热闹了。

ice skating在三楼。大小和jurong east的那家差不多,价格和开放时间看下表。

price

我们就用了便宜那种的鞋子,鞋子也还比较新,场馆维护也不错。下次打算试一试那个hockey,可能刃会更利一点把。
我们自己带了手套和袜子,不然需要买他们的。
因为mm不太会,大多时间都在教她,最后她也学的差不多了,基本可以自己滑了。 很有成就感。
我很久没滑了,滑了几圈去复习。基本恢复到以前的水平了。 只是年纪老了,不敢蹦蹦跳跳了。就这,有一次摔的比较结实,脖子被蹲到了,现在仍很痛。
玩了两个小时,也已经累的不行了,而冰场开始铲冰了。就闪人了。比较可笑的是,那个铲冰机和plants vs zombies里的铲冰机长真是一模一样。没带相机,没法上片子了。
走的时候,听到那边stadium里狂吼的声音,仔细辨认,是五月天的。
看到mrt的office里有很多工作人员,大家都在等散场然后疏通管理人流。

几个tips

  1. 可以自带手套和袜子,省点钱,但这两样是必须的。手套是防止手撑地的时候被冰划伤
  2. 要穿长裤,长袖衣服,和手套同理。
  3. 若有护膝可以戴上,摔在冰上,膝盖很受不了(老了?)
  4. 带水,里面没看到买水的。只有投币买杯装饮料的。

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two latex tips

1. how to use symbol (~) in latex?  simple, just use \textasciitilde.  Somebody use $\sim$, that’s not correct. if you  copy it in Acrobat Reader and paste it out, you will find that’s another char.

2. how to use right-alignment and top-alignment in a tabular. Here is how: http://texblog.wordpress.com/2008/05/07/fwd-equal-cell-width-right-and-centre-aligned-content/
to summarize, define:\newcolumntype{x}[1]{>{\raggedleft\hspace{0pt}}p{#1}}  and use it in tabular \begin{tabular}{|l|x{4.5cm}|x{4.5cm}|}. but you cannot use \\ to end lines. Instead, use \tabularnewline.

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how to do photo matting in photoshop CS4

There used to be a plugin named Extract. but it is not by default installed. so download optional installation @ http://www.adobe.com/support/downloads/thankyou.jsp?ftpID=4047&fileID=3768

installation is simple , copy the plugin file to the plugin folder->filter of photoshop application.

after that,  open a photo and choose extract from manu under filter.  use highlight tool to draw the boundaries and the use fill tool to fill the foreground, thereafter click ‘Ok’..  job is done. Note: donot draw too wide boundary using highlight tool, the narrow it is, the better your matting is.

Although there is quite a lot research on photo matting and they have much better result. The photoshop one is still very easy to use and fast.

If you cannot get the matting properly, please read this instruction with figure: http://www.photoshopcafe.com/tutorials/cutout/cutout.htm

update 2/12/2010: new plugins download here (for cs5, this is extractplus for windows) http://www.adobe.com/support/downloads/detail.jsp?ftpID=4688

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