2009年10月16日星期五
2009年10月13日星期二
some useful links for latex
Online LaTeX Equation Editor
http://thornahawk.unitedti.org/equationeditor/equationeditor.php
Online tutorials on LaTeX
http://www.tug.org/tutorials/tugindia/
http://thornahawk.unitedti.org/equationeditor/equationeditor.php
Online tutorials on LaTeX
http://www.tug.org/tutorials/tugindia/
2009年10月8日星期四
More connections made for LTE applications(ZZ)
LONDON — The ng Connect Program — founded by Alcatel-Lucent earlier this year to drive the development of services for emerging LTE and 4G networks — has added five new members, two new Proofs of Concept and two more labs.
The initiative now boasts 26 members, eight PoCs, and six labs and demonstration centers around the world.
The latest members to sign up include CeativeLabs — best known for its Sound Blaster sound cards; digital security and SIM specialist Gemalto; Kabillion " an Emmy Award-winning entertainment program service for kids ages 6-12 available both as a free VOD channel and a free online broadband site; V-Gate, which is bringing 3D and LBS to mobile devices with its metaport offering that transmits 3D content in real time to mobile devices; and R360, which focuses on providing mobile and PC-based access to secure and private business productivity suites on higher end phones and mobile devices.
One of the Proofs of Concept, developed by Alcatel-Lucent and Gemalto, focuses on mobile access to corporate and cloud applications for telcos through hardware-based authentication and single sign-on; the other a digital signage solution developed by MediaTile in collaboration with Alcatel-Lucent that integrates 4GVideoPresence technology to support real time, interactive video sessions between consumers in-store with product questions and the brand representative.
The initiative will now have access to R&D and proof-of-concept demonstration facilities in Ottawa, Canada; Dallas, TX; Murray Hill, NJ; Stuttgart, Germany, and now Paris and Villaceaux, France, for European operators.
Since February 2009, collaborations have created eight demonstrations that showcase future applications over next generation networks for the education, healthcare, advertising, digital signage and entertainment sectors.
The initiative now boasts 26 members, eight PoCs, and six labs and demonstration centers around the world.
The latest members to sign up include CeativeLabs — best known for its Sound Blaster sound cards; digital security and SIM specialist Gemalto; Kabillion " an Emmy Award-winning entertainment program service for kids ages 6-12 available both as a free VOD channel and a free online broadband site; V-Gate, which is bringing 3D and LBS to mobile devices with its metaport offering that transmits 3D content in real time to mobile devices; and R360, which focuses on providing mobile and PC-based access to secure and private business productivity suites on higher end phones and mobile devices.
One of the Proofs of Concept, developed by Alcatel-Lucent and Gemalto, focuses on mobile access to corporate and cloud applications for telcos through hardware-based authentication and single sign-on; the other a digital signage solution developed by MediaTile in collaboration with Alcatel-Lucent that integrates 4GVideoPresence technology to support real time, interactive video sessions between consumers in-store with product questions and the brand representative.
The initiative will now have access to R&D and proof-of-concept demonstration facilities in Ottawa, Canada; Dallas, TX; Murray Hill, NJ; Stuttgart, Germany, and now Paris and Villaceaux, France, for European operators.
Since February 2009, collaborations have created eight demonstrations that showcase future applications over next generation networks for the education, healthcare, advertising, digital signage and entertainment sectors.
2009年10月7日星期三
Telecomm is recovering~ but not wireless
It seems like wireline market is much better than wireless because of new need on 10-, 40- and 100 Gbit/s Ethernet networks in many areas.
Also, Optical Transport Network(OTN) technology is pretty hot topic recently. It is very useful in communicatio networks for packets processing and optical transport.
"Starting in 2010, Verizon plans to deploy for its Fios network only OTN systems that support both optical transport and packet processing". And a lot of companies are working on the projects related to OTN, like HuaWei.
Does it mean we need to switch the research area to optical networks?
http://www.eetimes.com/rss/showArticle.jhtml?articleID=220301536&pgno=1
Also, Optical Transport Network(OTN) technology is pretty hot topic recently. It is very useful in communicatio networks for packets processing and optical transport.
"Starting in 2010, Verizon plans to deploy for its Fios network only OTN systems that support both optical transport and packet processing". And a lot of companies are working on the projects related to OTN, like HuaWei.
Does it mean we need to switch the research area to optical networks?
http://www.eetimes.com/rss/showArticle.jhtml?articleID=220301536&pgno=1
2009年10月6日星期二
LaTex学习笔记ZZ
From：
http://bbs.sjtu.edu.cn/bbstcon,board,TeX_LaTeX,reid,1248261286.html
http://latex.yo2.cn/articles/latex-thesis.html
http://cnacademia.org/bbs/viewthread.php?tid=1017&extra=
http://www.cnacademia.org/home/space.php?uid=106&do=blog&id=791
建议初学者不要在配置TeX系统上花太多时间。等熟悉以后，觉得无聊，可以自己DIY搭一个TeX系统玩。
Windows 下的可用的已经打包好的TeX/LaTeX套装有：
1. CTeX 最新版本为 2.7.0.39
http://www.ctex.org/CTeXReleaseNotes
2. CTeXLive 2008
http://bbs.ctex.org/viewthread.php?tid=50728
CTeX基于MikTeX，CTeXLive基于跨平台的TeXLive。装好以后都能处理CJK-GBK, CJK-UTF8,xetex-UTF8方案的中文tex源文件。两者的安装都很傻瓜化（CTeXLive有相当详尽的安装说明，还能在Linux下使用）。安装以后都不需要额外安装中文字体了。因为配置中文环境、安装中文字体是自己配置TeX系统比较头大的一部分。总之这两个套件帮你弄好了。
CTeX使用的是Windows自带的TrueType字体(除了宋体simsun.ttf)；CTeXLive将TrueType字体转为Type１字体后放到了TeX目录树中，一起发布了。所以CTeX生成的中文PDF文件嵌入的TrueType字体，CTeXLive生成的中文PDF文件嵌入的是Type1字体。当然，嵌入什么类型的字体可以自己DIY的。一般而言，CTeX生成的PDF文件较小。我也比较推荐Windows下的用户使用CTeX套件。
但是，如果使用的操作系统是Vista，CTeX这种“使用操作系统中文字体”的工作方式可能会出现问题。CTeX默认会去使用XP中带的simfang.ttf simhei.ttf simkai.ttf simli.ttf simyou.ttf，这些字体在Vista下可能没有。另外，Vista下又引入了一大堆奇怪的东西，也会搞出莫名其妙的故障。CTeX论坛中(http://bbs.ctex.org/index.php已经有了一些不兼容的报告，貌似勉勉强强解决了。
既然你选择了Vista，那就意味着得自己花功夫解决兼容性问题。我周围没有Vista给我折腾，所以出了问题你自己要详细报告出来——关键字“详细”。把从命令行编译提示的错误贴出来，等等。
入门图书，推荐：
1. 《LaTeX Notes v1.17》中文的 LaTeX 笔记，是个中国老师写的，纯正的中国人，但为什么使用了一个英文标题就不得而知了。语言诙谐幽默，内容覆盖了入门所需的基本内容，也谈到了中文解决方案（用的是CJK）。
最新版v1.17下载地址lnotes.pdf
http://www.ctan.org/tex-archive/info/lnotes/#jhac16050c0d9bc3d76c408567e4c1e96c
水源上传： http://bbs.sjtu.edu.cn/file/test/1248271358192780.pdf
2. 《一份不太简短的LATEX 2e 介绍 v4.2》，经久不衰的入门资料。最新版本已经到了 v4.2。我当时是先照着上面的英文例子学，找到了一些手感。但是 v4.2 都没有介绍CJK中文方案，这个可以找别的资料补充或者 Google，推荐材料是李果正的《我的CJK》。
最新版v4.2 下载地址lshort-zh-cn.pdf
http://www.ctan.org/tex-archive/info/lshort/chinese/#jh8fc5e973703f70cf66b0e9c6b6eb3298
或 http://zelmanov.ptep-online.com/ctan/lshort_chineese.pdf
3. CTeX FAQ (CTeX常见问题集)。 一个很好的常见问题集，覆盖面很广。
http://www.ctan.org/pub/tex-archive/info/ctex-faq/ctex-faq.pdf
水源上传： http://bbs.sjtu.edu.cn/file/TeX_LaTeX/1248271394192231.pdf
http://bbs.sjtu.edu.cn/bbstcon,board,TeX_LaTeX,reid,1248261286.html
http://latex.yo2.cn/articles/latex-thesis.html
http://cnacademia.org/bbs/viewthread.php?tid=1017&extra=
http://www.cnacademia.org/home/space.php?uid=106&do=blog&id=791
建议初学者不要在配置TeX系统上花太多时间。等熟悉以后，觉得无聊，可以自己DIY搭一个TeX系统玩。
Windows 下的可用的已经打包好的TeX/LaTeX套装有：
1. CTeX 最新版本为 2.7.0.39
http://www.ctex.org/CTeXReleaseNotes
2. CTeXLive 2008
http://bbs.ctex.org/viewthread.php?tid=50728
CTeX基于MikTeX，CTeXLive基于跨平台的TeXLive。装好以后都能处理CJK-GBK, CJK-UTF8,xetex-UTF8方案的中文tex源文件。两者的安装都很傻瓜化（CTeXLive有相当详尽的安装说明，还能在Linux下使用）。安装以后都不需要额外安装中文字体了。因为配置中文环境、安装中文字体是自己配置TeX系统比较头大的一部分。总之这两个套件帮你弄好了。
CTeX使用的是Windows自带的TrueType字体(除了宋体simsun.ttf)；CTeXLive将TrueType字体转为Type１字体后放到了TeX目录树中，一起发布了。所以CTeX生成的中文PDF文件嵌入的TrueType字体，CTeXLive生成的中文PDF文件嵌入的是Type1字体。当然，嵌入什么类型的字体可以自己DIY的。一般而言，CTeX生成的PDF文件较小。我也比较推荐Windows下的用户使用CTeX套件。
但是，如果使用的操作系统是Vista，CTeX这种“使用操作系统中文字体”的工作方式可能会出现问题。CTeX默认会去使用XP中带的simfang.ttf simhei.ttf simkai.ttf simli.ttf simyou.ttf，这些字体在Vista下可能没有。另外，Vista下又引入了一大堆奇怪的东西，也会搞出莫名其妙的故障。CTeX论坛中(http://bbs.ctex.org/index.php已经有了一些不兼容的报告，貌似勉勉强强解决了。
既然你选择了Vista，那就意味着得自己花功夫解决兼容性问题。我周围没有Vista给我折腾，所以出了问题你自己要详细报告出来——关键字“详细”。把从命令行编译提示的错误贴出来，等等。
入门图书，推荐：
1. 《LaTeX Notes v1.17》中文的 LaTeX 笔记，是个中国老师写的，纯正的中国人，但为什么使用了一个英文标题就不得而知了。语言诙谐幽默，内容覆盖了入门所需的基本内容，也谈到了中文解决方案（用的是CJK）。
最新版v1.17下载地址lnotes.pdf
http://www.ctan.org/tex-archive/info/lnotes/#jhac16050c0d9bc3d76c408567e4c1e96c
水源上传： http://bbs.sjtu.edu.cn/file/test/1248271358192780.pdf
2. 《一份不太简短的LATEX 2e 介绍 v4.2》，经久不衰的入门资料。最新版本已经到了 v4.2。我当时是先照着上面的英文例子学，找到了一些手感。但是 v4.2 都没有介绍CJK中文方案，这个可以找别的资料补充或者 Google，推荐材料是李果正的《我的CJK》。
最新版v4.2 下载地址lshort-zh-cn.pdf
http://www.ctan.org/tex-archive/info/lshort/chinese/#jh8fc5e973703f70cf66b0e9c6b6eb3298
或 http://zelmanov.ptep-online.com/ctan/lshort_chineese.pdf
3. CTeX FAQ (CTeX常见问题集)。 一个很好的常见问题集，覆盖面很广。
http://www.ctan.org/pub/tex-archive/info/ctex-faq/ctex-faq.pdf
水源上传： http://bbs.sjtu.edu.cn/file/TeX_LaTeX/1248271394192231.pdf
2009年10月1日星期四
802.11b WiFi Channels
802.11b WiFi Channels
In the United States and Canada there are 11 channels available for use in the 802.11b 2.4GHz WiFi Frequency range. This standard is defined by the IEEE.
Channel Lower Frequency Center Frequency Upper Frequency
1 2.401 2.412 2.423
2 2.404 2.417 2.428
3 2.411 2.422 2.433
4 2.416 2.427 2.438
5 2.421 2.432 2.443
6 2.426 2.437 2.448
7 2.431 2.442 2.453
8 2.436 2.447 2.458
9 2.441 2.452 2.463
10 2.451 2.457 2.468
11 2.451 2.462 2.473
ZZ from
http://www.moonblinkwifi.com/2point4freq.cfm
In the United States and Canada there are 11 channels available for use in the 802.11b 2.4GHz WiFi Frequency range. This standard is defined by the IEEE.
Channel Lower Frequency Center Frequency Upper Frequency
1 2.401 2.412 2.423
2 2.404 2.417 2.428
3 2.411 2.422 2.433
4 2.416 2.427 2.438
5 2.421 2.432 2.443
6 2.426 2.437 2.448
7 2.431 2.442 2.453
8 2.436 2.447 2.458
9 2.441 2.452 2.463
10 2.451 2.457 2.468
11 2.451 2.462 2.473
ZZ from
http://www.moonblinkwifi.com/2point4freq.cfm
怎样避免多任务同时工作--专注
版权声明：原创作品，允许转载，转载时请务必以超链接形式标明文章 原始出处 、作者信息和本声明。否则将追究法律责任。http://laziocht.blog.51cto.com/107289/158940
Posted from Internet
How to Avoid Multi Tasking
You’re working on two projects at once, while your boss has placed two new demands on your desk. You’re on the phone while three new emails come in. You are trying to get out the door on time so you can pick up a few groceries on the way home for dinner. Your Blackberry is going off and so is your cell phone. Your co-worker stops by with a request for info and your Google Reader is filled with 100+ messages to read.Congratulations, multi-tasker
几乎所有的上班族都是多任务工作者。
In this age of instant technology, we are bombarded with an overload of information and demands of our time. Even having a system designed for quick decisions and for keeping all the demands of your life in order can't prevent us from being so overwhelmed with things to do that our system begins to fall apart.
This article is how not to multi-task — a guide to working as simply as possible for the sake of preserving your mental health and keeping your bodily health intact.
11个方法使你的工作变得简单，高效！
1.Get clear on why it is a bad thing to multi-task.
多任务是一件不好的事情，会使效率低下，多任务的复杂性会给你带来压力，同时增加的犯错误的几率。
* Multi-tasking is less efficient, due to the need to switch gears for each new task, and the switch back again.
* Multi-tasking is more complicated, and thus more prone to stress and errors.
* Multi-tasking can be crazy, and in this already chaotic world, we need to reign in the terror and find a little oasis of sanity and calm.
2.Start avoiding multi-tasking. The remaining steps demonstrate how to stop multi-tasking and start approaching your tasks in a zen like manner that will provide a much calmer work method.
既然多任务带来这么多坏处，我们就需要避免她。
3.Set up to-do lists for different contexts. This means having to-do lists related to such things as calls, computer, errands, home, waiting-for, etc., depending on your situation.
列出任务列表，排定优先级，设定任务最晚完成时间
4.Use a capture tool. A capture tool, such as a notebook, can be used for instant notes on what needs to be done.
使用提醒工具，或Excel记录工作列表
5.Have a physical and e-mail inbox. Make sure to have as few in-boxes as possible, so that all incoming stuff is gathered together in one place. Basically, have one in-box for paper stuff, and one for digital.
将纸质的任务放到一个文档夹里面，或将电子档的任务放到同一个文件夹里面
6.Plan your day in blocks. Have open blocks in between for urgent stuff that comes up. You might try one-hour blocks, or half-hour blocks, depending on what works for you. Or try this: 40 minute blocks, with 20 minutes in between them for miscellaneous tasks.
将你一天的时间划分成更小的时间段，来完成不同时长要求的工作，这样你的时间利用率会很高
7.First thing in the morning, work on your Most Important Task. Don’t do anything else until this is done. Give yourself a short break, and then start on your next Most Important Task. If you can get 2-3 of these done in the morning, the rest of the day is gravy.
在没有制定出来一天的MIT时，不要开始任何任务，养成这个习惯
8.When you are working on a task in a time block, turn off all other distractions. Shut off e-mail, and the internet if possible. Shut off your cell phone. Try not to answer your phone if possible. Focus on that one task, and try to get it done without worrying about other stuff.
当你决定开始做一件事情的时候，先深呼吸，然后开始专注到这件事情上，不要被周围的事务所打扰，在一小段时间内，将你的注意力全部集中到这件事情上！一件一件的专心的来完成一个个小任务。
9.If you feel the urge to check your email or switch to another task, stop yourself. Breathe deeply. Re-focus yourself. Get back to the task at hand. If other things come in while you’re working, put them in the in-box, or take a note of them in your capture system. Get back to the task at hand.
当你遇到不可避免的要去做另外一个任务的时候，先记录下你刚才做到哪一步了，然后再去做更紧急的任务，或者你可以将新任务先加入任务列表，然后回来继续做没有完成的任务，后者更为可取，因为你的思维不至于被割断。
10.Every now and then, when you’ve completed the task at hand, process your notes and in-box. Add the tasks to your to-do lists and re-figure your schedule if necessary. Process your e-mail and other in-boxes at regular and pre-determined intervals.
当你完成了一件事情后，不要急于去做先一个任务，先可以更新你的任务列表，或者将问题进行一个总结，或者重新安排一下其他的任务，这样会使你的工作更加有条理。
11.Take deep breaths, stretch, and take breaks now and then. Enjoy life. Go outside, and appreciate nature. Keep yourself sane.
当你在一个任务无法进行下去的时候，或者你没有思路的时候，你需要深呼吸，或去喝杯水，或去一趟洗手间，停止思考这个问题。当你放松回来后，说不定你已经有了新的想法！
Tips:
There are times when an interruption is so urgent that you cannot put it off until you’re done with the task at hand. In that case, try to make a note of where you are (writing down notes if you have time) with the task at hand, and put all the documents or notes for that task together and aside (perhaps in an “action” folder or project folder). Then, when you come back to that task, you can pull out your folder and look at your notes to see where you left off.
Posted from Internet
How to Avoid Multi Tasking
You’re working on two projects at once, while your boss has placed two new demands on your desk. You’re on the phone while three new emails come in. You are trying to get out the door on time so you can pick up a few groceries on the way home for dinner. Your Blackberry is going off and so is your cell phone. Your co-worker stops by with a request for info and your Google Reader is filled with 100+ messages to read.Congratulations, multi-tasker
几乎所有的上班族都是多任务工作者。
In this age of instant technology, we are bombarded with an overload of information and demands of our time. Even having a system designed for quick decisions and for keeping all the demands of your life in order can't prevent us from being so overwhelmed with things to do that our system begins to fall apart.
This article is how not to multi-task — a guide to working as simply as possible for the sake of preserving your mental health and keeping your bodily health intact.
11个方法使你的工作变得简单，高效！
1.Get clear on why it is a bad thing to multi-task.
多任务是一件不好的事情，会使效率低下，多任务的复杂性会给你带来压力，同时增加的犯错误的几率。
* Multi-tasking is less efficient, due to the need to switch gears for each new task, and the switch back again.
* Multi-tasking is more complicated, and thus more prone to stress and errors.
* Multi-tasking can be crazy, and in this already chaotic world, we need to reign in the terror and find a little oasis of sanity and calm.
2.Start avoiding multi-tasking. The remaining steps demonstrate how to stop multi-tasking and start approaching your tasks in a zen like manner that will provide a much calmer work method.
既然多任务带来这么多坏处，我们就需要避免她。
3.Set up to-do lists for different contexts. This means having to-do lists related to such things as calls, computer, errands, home, waiting-for, etc., depending on your situation.
列出任务列表，排定优先级，设定任务最晚完成时间
4.Use a capture tool. A capture tool, such as a notebook, can be used for instant notes on what needs to be done.
使用提醒工具，或Excel记录工作列表
5.Have a physical and e-mail inbox. Make sure to have as few in-boxes as possible, so that all incoming stuff is gathered together in one place. Basically, have one in-box for paper stuff, and one for digital.
将纸质的任务放到一个文档夹里面，或将电子档的任务放到同一个文件夹里面
6.Plan your day in blocks. Have open blocks in between for urgent stuff that comes up. You might try one-hour blocks, or half-hour blocks, depending on what works for you. Or try this: 40 minute blocks, with 20 minutes in between them for miscellaneous tasks.
将你一天的时间划分成更小的时间段，来完成不同时长要求的工作，这样你的时间利用率会很高
7.First thing in the morning, work on your Most Important Task. Don’t do anything else until this is done. Give yourself a short break, and then start on your next Most Important Task. If you can get 2-3 of these done in the morning, the rest of the day is gravy.
在没有制定出来一天的MIT时，不要开始任何任务，养成这个习惯
8.When you are working on a task in a time block, turn off all other distractions. Shut off e-mail, and the internet if possible. Shut off your cell phone. Try not to answer your phone if possible. Focus on that one task, and try to get it done without worrying about other stuff.
当你决定开始做一件事情的时候，先深呼吸，然后开始专注到这件事情上，不要被周围的事务所打扰，在一小段时间内，将你的注意力全部集中到这件事情上！一件一件的专心的来完成一个个小任务。
9.If you feel the urge to check your email or switch to another task, stop yourself. Breathe deeply. Re-focus yourself. Get back to the task at hand. If other things come in while you’re working, put them in the in-box, or take a note of them in your capture system. Get back to the task at hand.
当你遇到不可避免的要去做另外一个任务的时候，先记录下你刚才做到哪一步了，然后再去做更紧急的任务，或者你可以将新任务先加入任务列表，然后回来继续做没有完成的任务，后者更为可取，因为你的思维不至于被割断。
10.Every now and then, when you’ve completed the task at hand, process your notes and in-box. Add the tasks to your to-do lists and re-figure your schedule if necessary. Process your e-mail and other in-boxes at regular and pre-determined intervals.
当你完成了一件事情后，不要急于去做先一个任务，先可以更新你的任务列表，或者将问题进行一个总结，或者重新安排一下其他的任务，这样会使你的工作更加有条理。
11.Take deep breaths, stretch, and take breaks now and then. Enjoy life. Go outside, and appreciate nature. Keep yourself sane.
当你在一个任务无法进行下去的时候，或者你没有思路的时候，你需要深呼吸，或去喝杯水，或去一趟洗手间，停止思考这个问题。当你放松回来后，说不定你已经有了新的想法！
Tips:
There are times when an interruption is so urgent that you cannot put it off until you’re done with the task at hand. In that case, try to make a note of where you are (writing down notes if you have time) with the task at hand, and put all the documents or notes for that task together and aside (perhaps in an “action” folder or project folder). Then, when you come back to that task, you can pull out your folder and look at your notes to see where you left off.
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