Jiggling & Wiggling

2007/07/15

麥克.墨菲(Michael Murphy)高科技選股策略

Filed under: 网摘, 杂七杂八 — roylez @ 12:30 上午

http://pchome.syspower.com.tw/other/richmall.htm

投資大師簡介:

 
麥克.墨菲是『加州高科技股通訊報』的創辦人兼編輯,1996年富比士雜誌將這份刊物評等為最具參考性的投資刊物,墨菲著有暢銷書”高科技選股策略”一
書,並且每個月定期為價值雜誌寫稿,也常出現在CNBC及CNN財經節目中接受訪問,而其高超的長期選股績效使他成為矽谷的傳奇人物,許多投資人認為他是
全美首席高科技股分析師

選股條件:

步驟1:營業額三年平均成長率 > 15%

步驟2:營業利益率三年平均 > 10%

步驟3:最近四季股東權益報酬率 > 15%

步驟4:最近四季研發費用佔營業額比率 > 5%

步驟5:P/GF=股價/(每股盈餘+每股研發費用)<8

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2007/06/14

Easy ConTeXt installation

Filed under: Software — roylez @ 6:31 上午

I have tried the nightmare of struggling to install a usable ConTeXt environment; the documentations or installation guides here and there on the web always deal with the situation that you have a tetex or texlive or some other tex dist installed and you just want add ConTeXt to them, one seldom tells that “how to make a clean installation without a already existing tex environment?”

However, the guide does exist——in the ConTeXt mailing list. Here I will show how to do that according to Hans’ message since nobody has done that before.
(more…)

2007/05/27

eps to pdf conversion-use epstopdf, pls

Filed under: Software — roylez @ 10:41 上午

I love the easiness and output quality of ConTeXt, and am using it to write my thesis and set output to pdf. However, when setting output format to pdf, which means using pdfetex to process the source, I found that I could not get vector quality figures.

The reason is that pdfetex only accepts pdf/png/jpg figures, in which only pdf is of vector quality. Converting eps figures to pdf with ps2pdf/imagemagick/gs can do the job but the dimension of the output is incorrect.

After Googling for quite a long time,  I reached the point that it is due to the eps “bounding box” problem, which can be solved by using epstopdf together with a ghostscript version later than 8.0. Pretty simple, isn’t it?

2007/05/14

Google calendar短信提醒

Filed under: Software, 杂七杂八 — roylez @ 2:03 下午

原本以为只有美国加拿大才可以使用的,几天前发现居然是全球可用。而香港支持的运营商之中就有3。兴奋不已之中赶紧把自己的手机和google calendar帮定了。今天Jupus Open Day的briefing,真的提前10分钟收到了短信。以后看来想要Google叫我起床都可以的!

奇怪的是,收到的短信的发件人都是很直接的写”Google”,没有号码。我想用手机直接添加日程,给(GVENT)48368 发送短信,没有成功。不知道Google到底是用什么号码给我发的短信。也许,我应该打个电话给3问下,顺便也问问是不是要收费的问题。

2007/05/11

网上连载小说的春天已经过去了吗?

Filed under: 杂七杂八 — roylez @ 1:53 下午

现在充斥连载小说的,尽是些心智尚未成熟的小破孩写的三流货,几部自己觉得有看头的小说,都出于半死不活的状态了。

兽血沸腾:曾经更新很频,但是自从600章左右作者的小孩出世,就更新慢到难忍。

异侠:这个最有戏剧性。作者的老爹欠一屁股赌债,现在全家在躲债……

恶魔狂想曲之明日骄阳:质量一直很稳定,可惜作者心情来了才更新,差不多一个季度一次吧。

赫氏门徒:曾经同《异侠》一并风光无限,但自从作者毕业工作之后,就更新很不稳定,大约1年1次。作者的老妈也似乎并不支持作者写小说。

2007/05/08

终于又可以wordpress了

Filed under: 杂七杂八 — roylez @ 9:50 上午

向support那边发了三次email,终于解决了,好惨哪。

2006/06/19

又一次转回xfce

Filed under: Software, Ubuntu — roylez @ 3:23 上午

Kubuntu总是在启动的时候莫名其妙地死机,一般第二次才能正常启动;firefox如果不关的话,内存会一直吃到2G。终于受不了了,加上Dapper里面的xfce已经改善了自动挂载usb硬盘的功能,终于决定回归xfce(我还是不喜欢gnome)。以前xubuntu里面那个buggy的xffm终于没有被默认安装了,感觉稳定性强了很多。开着firefox几天不关机,内存也只用400M左右。KDE真是不争气阿。还小试了一下composit,贴个图。

2006/06/14

是时候为前程作准备了

Filed under: 杂七杂八 — roylez @ 7:10 上午

昨天按照计划与老板进行讨论。老板说,你现在的东西其实已经可以写thesis了,但是没有必要这么早就写,可以弄多些东西充实一下……我这才想到,原来我也到了要毕业的时候了。已经想好了不要去做研究,如果想要一切顺利地找到称心如意的工作,真的不是一件容易的事情。

开工了开工了,不能再迷糊了。

2006/06/09

vim不能折叠,这是Ubuntu的错?

Filed under: Software, Ubuntu — roylez @ 5:29 上午

我的vim里面不能默认开启折叠,已经忍了它很久了。昨天又一次调程序,终于受不了一页页翻代码的麻烦,决定要搞定它。于是,上freenode.net的#vim去问。一位叫做tpope的老大真是热心,细细的问我各种设置。在让他失望了无数次之后,他终于这样说“你还是手动折叠好了……”。惨阿。然后有人说vim 6.x的runtime文件都有些毛病,不能正常使用折叠——我真的怀疑他的说法:难道因为有人写错了runtime文件,所有的vi用户都没有折叠用?又有人说这是Ubuntu的毛病,我还是很怀疑……

没有折叠的日子,真的挺难受的。

2006/06/08

A bug of intel fortran compiler 9.0

Filed under: Software — roylez @ 3:39 上午

Today I was doing some molecular dynamics programming, then it was found that one parameter of the simulation changed strangely. That parameter should be a constant throughtout the run, and the program compiled under compaq visual fortran in windows platform could ran without this error. I first thought this was because the compatiblity of the code migrated from windows, but finaly I was surprised that it was a very silly bug of the compiler: intel fortran compiler 9. Okay, let’s see where that hole is.

My origin code is like the following.

if ( AllowQuenching .eqv. .true. .and. QuenchBegin <= stepcount .and. QuenchEnd > stepcount ) then
refTmp = refTmp + (aimTmp-reftmp)/(QuenchEnd-stepcount)
end if

The variable AllowingQuenching was always set to be .False. so that refTmp would never be changed. But to my surprise when AllowQuenching .eqv. .true. gave a false value, the whole if test gave a .True.!? However, when I replaced AllowQuenching .eqv. .true. with AllowQuenching, everything went well. For a compiler with great reputation, this is really silly.

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