有foursquare这样的空间流应用

具体可以查看http://foursquare.com/

不知道能否有个timeline+spaceline 的应用?

即:记录每天24小时,在什么地方待了多久,在什么地方待了多久 如此记录下每天的行程

虽然对于个人隐私来讲,这些数据不便公开,但是就好比车载gps一样,来一个人载gps记录下自己每天的行程

犹如目前已有的记录自己每天做什么事情的录像记录模式一样,其实待今后退休,闲暇的时候均可以翻出来回忆

随着越来越繁忙的生活,越来越没办法闲暇来记录自己的点点滴滴的时候 在如此越来越开放如此越来越没隐私的社会,也许将会有如此产品推出吧?

早上躺床上无聊，想来想去，不知道怎么想到这儿去了

也许是前2天在网上看到这个图？

我在想着，以后大家在街上要饭，直接丢个显示屏在前面，显示当前讨了多少钱

当然，这个显示多少钱是跟网上交易账号挂钩的，比如绑定个支付宝账号呀，绑定个paypal啊(让国际友人也有机会给钱嘛)

另外也不要要这个纸板了，直接弄个平板电脑丢前面，滚动显示多好，内容又丰富精彩，还可以自定制，再加个摄像头，自动对过路行人进行外貌分析。

比如看到要走来一个小妞，那么就显示卡哇伊点的文字风格

比如看到对面走来一老外，那么内容就显示英文嘛  lol 要不然谁看得懂中文

然后路过的行人们，想给钱的，利用RFID技术，直接拿出自己的手机(无线手持装置)，输入个价钱，对着这人的接收装置，直接按个回车就可以走人了嘛，也不用翻翻自己钱包有没零钱，省时又省事。

……………………………………………………………………

另外再来点中国特色，每个乞丐都要去当地部门登记，才可以领取比如RFID识别，或者是全球唯一IPv6地址认定。这样可以保证乞讨事实的真实可靠性，当然这些都是要靠管理部门的信誉来保证了……后话不提

又研究了1个小时.为了传进去我下午花了2个小时转换的一本切了白边的书，如果不切白边的话，估计再看下去会把眼睛看坏的，6寸的小屏幕看原版的pdf实在是太费眼睛了

由于cpu太弱，用pdflrfwin.exe转换需要好久

转换之后效果倒是很不错

从图片1切了白边就变图片2的效果了

这样丢到6寸里面之后，基本上字都可以看清楚不用放大了

放大有个好处就是字很大，但是……像图2中这Fig 1.2的图就没希望看了

所以切了白边以后，不用放大，字也可以看清楚，图也可以看到

………………

书转换好了，就开始往里面传书了，我的噩梦就开始了

删除原来那本，然后装入新的这本

完全找不到新插入这本……

http://www.hi-pda.com/forum/viewthread.php?tid=417538

照这个教程来的，但是没用……依然找不到，后来把cache文件删除，再生成出来的cache.xml文件就变态了

原来好歹缺那一本还有800多k大小，现在新生成的cache.xml就只有100k大小了

最终，采用了终极无敌大法，格式化SD卡，然后重新传书，终于全部好了。。阿门…

现在很后悔买了16G的SDHC卡，我要是当初买4个4G的SDHC卡多好吧。唉

ps: 前天在homeplus见到4G的SDHC卡卖11900韩元…拿起来又放下去，拿起来又放下去..唉我后悔……

想做ssh的服务器，但是由于俺的*unix有其他用处，所以暂时找了一台win来做

先是用了Copssh 界面很简洁，但是管理上不是很方便，尤其是多用户多账号的情况下要在windows开启n个用户，监控上也不是很便捷

后来改vshell，看起来操作很复杂，具体没仔细研究，然后直接跳去用WinSSHD

WinSSHD目前有4/5 版本，4版本界面也不是非常的友好

而5个人版在限制了一些使用量，比如开虚拟用户数10个以内，还有几个功能之外，并无任何限制

先是安装了试用版，功能完全版，在研究了一段之后，终于明白4那些功能究竟是怎么用了的，因为5有个实时的event提示功能，如果哪里出错可以明白

最终试用之后

决定采用5的个人版本

1.在win那边开一个账号

2.打开WinSSHD Control Panel最下面的Password Cache 把win的那个新建账号和密码输入

这步的主要目的是后面的虚拟用户建立的时候都是通过这个真实用户来登陆验证访问的

3.进入Edit setting

window group  windows accouts  一步一步按自己需求设置

virtual group 也是一样一步一步设置即可

virtual accouts 这边基本设置都跟virtual group 账号和密码自己设置即可

以上……

1.未来肯定会消灭掉传统纸行业出版的

2.未来肯定没纸 (bt同学已经谈过)

3.对于电子书出版，会大大降低出版业的门槛，就好比之前的网络歌手

4.对于电子书出版，不用纸质的话，也会对环境减少污染，至少不用砍树造纸了吧

5.出行的时候，带着一本电子书阅读器，装几百几千本书也没问题，想象下当年文人出行带几车书的恐怖情景

6.可以在书上随意涂写都没问题，因为可以随意擦掉

7.电子书的成本，相当于纸质书来讲更低更低，修改方便，也不用second edition之类叫大家一版再一版的买,直接update即可

8.与无线网结合，amazon那个报纸投递项目真的很不错，这样很快邮递员将失业

看这篇有感

http://www.readwriteweb.com/archives/does_amazons_999_price_for_ebooks_spell_the_end_of.php

最后，我的SONY PRS-505就快到手了  大家撒花庆祝吧

没有最bt，只有更bt。

当然如果家用这么牛X的电脑的话，真的是cloud computing in family咯~

转自

http://lifehacker.com/5062441/diy-filing-cabinet-linux-server-cluster

Freelance animator Janne needed a cheap way to do a whole lot of CPU-intensive 3D rendering, so he built a Linux cluster into an Ikea filing cabinet to get the job done. The Helmer was a whole lot cheaper than what CPU cases would cost for the servers he built, and it saved a lot of space, too. Check out the Helmer Linux cluster site to get the details of how Janne mounted the motherboards and fans inside the cabinet to create a home-friendly, energy-efficient, six-server cluster.

接着在lifehack页面转到这个详细的制作过程是更加的bt

http://helmer.sfe.se/

真的是梦幻级的配置24核48G Ram

3D computer rendering are very CPU intensive and the best way so speed up slow render problems, are usually to distribute them on to more computers. Render farms are usually very large, expensive and run using ALLOT of energy. I wanted to build something that could be put in my home, not make too much noise and run using very little energy… and be dirt cheep, big problem? no computer stuff cost almost nothing these days, it just a matter of finding fun stuff to play with.

I wanted to use Intel Quad core 65 nm or better. I surfed the web and found 6 of then at a good price. Then I looked after the cheapest motherboard that could run these. The result of my investigation was the Gigabyte S-series GA-G33M-DS2R/S2 card.

..and my cat approve.

Next, finding memory. The motherboard could hold up to 8GB of memory each, and I wanted to maximize all I could. Here are the 12x4GB =48GBmemory modules.

Mounting CPU coolers.

Next problem was to find a good computer case that could hold these motherboards. But this was a big problem. 6x cases cost almost as much as the motherboards and CPU’s! So here was some room for improvement. I found the IKEA helmer cabinet. Perfect! Who knew IKEA made there stuff ATX compatible.

Some extra support for backside of box.

Mounting power supplies and fans in zig zag pattern to maximize airflow.

Motherboard H1, H2 and H3 mounted. Fans on wrong side. I mounted 3 mm plexiglas under the motherboard so it would not short circuit when I installed them.

Big mess on floor.

Disk cloning in progress. I used Fedora 8, and the command "dd" to clone the discs from the bootable System rescue CD disc.

> dd if=/dev/sda of=/dev/sdb

Done! I use the software Dr Queue as batch job dispatcher. All connected to a 8 port 3 com gigabit switch. Common storage using nfs to a FreeNAS server running on a Via C7 machine (that just need 20 W power .. another story Instead of power switch I used a simple cable to the "pwr" jumper on motherboard. (Wires tejped on right side)

Instructions of how I did the DrQueue setup is here:
DrQueueHOW-TO.pdf

The most amazing is that this machine just cost as a better standard PC, but has 24 cores that run each at 2.4 Ghz, a total of 48GB ram, and just need 400W of power!! This means that it hardly gets warm, and make less noise then my desktop pc.

Render jobs that took all night, now gets done in 10-12 min.

..next one will be in red..

/Janne
www.sfe.se

Update 1:
It has been crazy last days. I have got allot of questions regarding details, construction and software setup. I’ll do a better page as soon… or I build the Red Helmer II Would be fun to use the AMD 16 core Bulldozer cpu x 6 = 96 core in a box ))

If a hardware manufacturer/pr-guy happened to read this. I’m very happy to receive hardware play around with

Update 2:
It has happened! I filled the ram, and all boards begun to swap. During this the power consumption was up to 800W. Running now a while, I noticed that H1 board (bottom one) gets hotter than the other boards. I think this is because the other boards are cooled from the fan below also.

Update 3:
Well, genral planning and webpage have begun on Red Helmer II – thank you Google

Update 4:
First alternative hardware for Red Helmer is selected, and will do about 12Tflops. (64x times faster then Helmer 1) and cost about the same Stay tuned for more!

Update 5:
A hardware god may help me, and then Helmer II will do about 50 TFLOPS!!!! please please, may the force be with me

Some design test of Helmer II here

Helmer Data Sheet

More Helmer pics here

Get the Helmer desktop image!

Some render tests result here:
The storming sea scene file 24 frames in resolution 4000×4000 pixels.
- On a MacPro 2 x DualCore Xenon 2.66 Ghz with 4 GB ram
took 552 minutes (9.2 h)

- Helmer did same 24 frames in 4k format in 64 min.

Some approximate numbers give Helmer a floating point capacity of 186 Gflops

Here is the scale of Helmer (about 2,5 foot high:)

My other life-hacks are here:
Building a wind sensor from a PS2-mouse
Building a small linux robot
Building a underwater camera house
Building a solar powered UAV

A better spelled version of ths page is here (by Dan – Thanks:)

Some example of rendered frames here.