2008年9月17日星期三

急救电话

有这样一个报道,在美国亚利桑那州一名男子癫痫病发,幸得牧羊犬迅速"拨通"911紧急电话求助,获得及时救助。 斯托尔内克10日癫痫病发,巴迪按照以前接受的训练迅速拨通求助电话,开始呜咽和吠叫。 连续不断的狗叫引起接线员的注意。 由此,警方迅速赶往斯托尔内克家,3分钟后听到巴迪叫声,找到斯托尔内克。

上面是愤愤眼里的敌人美国打急救电话的情况,好吧在来看看这块土地上,一个孩子拨打急救电话,将会发生什么情况。深圳有个3、4岁的小孩打电话给120,哭着说妈妈晕倒
在地上,还出了好多血,接线员就问地址,小孩说来家在成都,刚到深圳不知道,妈妈死掉了。120还在电视上教育大家—一定要孩子记得家里的地址。

啊!世界其实可以分成很多个的。

2008年5月20日星期二

10 things you can do when Windows XP won't boot

When your computer hardware appears to power up okay, but the Windows XP operating system won't boot properly, you have to begin a troubleshooting expedition that includes getting into the operating system, determining the problem, and then fixing it. To help you get started on this expedition, here are 10 things you can do when Windows XP won't boot.

This blog post is available in PDF format as a TechRepublic Download. This entry was originally published as an article on January 26, 2006.

#1: Use a Windows startup disk

One of the first things you should reach for when troubleshooting a Windows XP boot problem is a Windows startup disk. This floppy disk can come in handy if the problem is being caused when either the startup record for the active partition or the files that the operating system uses to start Windows have become corrupted.

To create a Windows startup disk, insert a floppy disk into the drive of a similarly configured, working Windows XP system, launch My Computer, right-click the floppy disk icon, and select the Format command from the context menu. When you see the Format dialog box, leave all the default settings as they are and click the Start button. Once the format operation is complete, close the Format dialog box to return to My Computer, double-click the drive C icon to access the root directory, and copy the following three files to the floppy disk:

  • Boot.ini
  • NTLDR
  • Ntdetect.com

After you create the Windows startup disk, insert it into the floppy drive on the afflicted system and press [Ctrl][Alt][Delete] to reboot the computer. When you boot from the Windows startup disk, the computer will bypass the active partition and boot files on the hard disk and attempt to start Windows XP normally.

#2: Use Last Known Good Configuration

You can also try to boot the operating system with the Last Known Good Configuration feature. This feature will allow you to undo any changes that caused problems in the CurrentControlSet registry key, which defines hardware and driver settings. The Last Known Good Configuration feature replaces the contents of the CurrentControlSet registry key with a backup copy that was last used to successfully start up the operating system.

To use the Last Known Good Configuration feature, first restart the computer by pressing [Ctrl][Alt][Delete]. When you see the message Please select the operating system to start or hear the single beep, press [F8] to display the Windows Advanced Options menu. Select the Last Known Good Configuration item from the menu and press [Enter].

Keep in mind that you get only one shot with the Last Known Good Configuration feature. In other words, if it fails to revive your Windows XP on the first attempt, the backup copy is also corrupt.

#3: Use System Restore

Another tool that might be helpful when Windows XP won't boot is System Restore. System Restore runs in the background as a service and continually monitors system-critical components for changes. When it detects an qqnet impending change, System Restore immediately makes backup copies, called restore points, of these critical components before the change occurs. In addition, System Restore is configured by default to create restore points every 24 hours.

To use System Restore, first restart the computer by pressing [Ctrl][Alt][Delete]. When you see the message Please select the operating system to start or hear the single beep, press [F8] to display the Windows Advanced Options menu. Now, select the Safe Mode item from the menu and press [Enter].

Once Windows XP boots into Safe mode, click the Start button, access the All Programs | Accessories | System Tools menu, and select System Restore. Because you're running in Safe mode, the only option on the opening screen of the System Restore wizard is Restore My Computer To An Earlier Time, and it's selected by default, so just click Next. Then, follow along with the wizard to select a restore point and begin the restoration procedure.

#4: Use Recovery Console

When a Windows XP boot problem is severe, you'll need to use a more drastic approach. The Windows XP CD is bootable and will provide you with access to a tool called Recovery Console.

To boot from the Windows XP CD, insert it into the CD-ROM drive on the problem system and press [Ctrl][Alt][Delete] to reboot the computer. Once the system begins booting from the CD, simply follow the prompts that will allow the loading of the basic files needed to run Setup. When you see the Welcome To Setup screen, shown in Figure A, press R to start the Recovery Console.

Firefox 3 On Track To Be Speediest Browser

Now that Mozilla's locked down Firefox 3's final feature set with Friday's push of release candidate 1, it's official: while Firefox 3 boasts some great new features like a smart address bar and better bookmarks manager, the best reason to upgrade will be for the performance improvements. Firefox 3 is noticeably faster and more stable than Firefox 2 to the casual user and Mozilla engineers have numbers that show it will be the fastest browser on the market. Tech site TechWeb reports:
Mozilla VP of engineering Mike Schroepfer claims that Firefox 3 is 9.3x faster than Microsoft Internet Explorer 7 and 2.7x faster than Firefox 2 in terms of JavaScript performance. In terms of Gmail message load time, he claims Firefox 3 is 6.8x faster lizx than IE7 and 3.8x faster than Firefox 2. And he says Firefox 3 beats Apple's Safari, which is also faster than Firefox 2.
Barring major bugs, RC 1 could become the final release of the third major iteration of the 'fox, slated to officially drop in June. Check out our complete field guide to testing Firefox 3 if you want to make your extensions work with the RC. If you're already using Firefox 3, be sure to type about:robots into the address bar to discover a fun little Easter egg. For a detailed list of what Firefox 3 has to offer, check out its release notes.

2008年2月19日星期二

Re: 今天写了一个BLOG程序。。asp+access.大家PP

* html h2{...}叫"星号HTML招数"(招数即hack 一种让浏览器表现得符合自己希望的不规范或者说不优雅的方法,作用就是解决浏览器bug。)。单独的 * 其实是一个通用选择器,但* html h2{...}这样写指定的就只是IE6.0及更低版本,为什么* html h2{...}只指定IE6和更低版本?大家知道HTML是网页上的第一个元素 ---- 根元素。但是IE6.0所有之前的版本还有一个匿名的根元素,也是html的父元素,因此可以使用通用选择器在IE6.0--版本中指定包含在这个匿名跟元素中的HTML元素的子元素的样式。

全球搜索最流行

1 iphoneiphone手机
2badoo 多语种社交网站
3 facebook 社交网站
4 dailymotion视频共享网站
5webkinz "网娃"儿童社区
6 youtube视频共享网站
7ebuddy 即时通信工具
8 second life虚拟世界游戏
9hi5 社交网站
10club penguin 企鹅俱乐部儿童社区

数据截止到2007年12月20日

2007年10月28日星期日

WiMAX"转正",带来的最大冲击是什么?

如果有一种技术能让人们彻底放弃手机。那么这种技术目前只能是"WiMAX"。2007-10-20,ITU(国际电信联盟)正式通过决议,将WiMAX纳入全球3G标准,该决议无疑为WiMAX
在全球攻城略地打开了最后一道门。对于中国来说,WiMAX带来的最大冲击是什么呢?欢迎各网友就此展开讨论。

一:WiMAX:手机5分钟下载完一部电影

    在此之前,WiMAX虽然在全球电信行业声名远播,但相对在国内越炒越热的传统3G技术,更是在名气上差了一大截。
    这项又被称为IEEE802.16x的无线技术,全称叫做"微波存取全球胡同技术(Wordwide  Interoperability  for  Microwave  Access)"。它是一项无线城域网(WMAN)技术,是针对微波和毫米波频断提出的一种新的空中接口标准。
    WiMAX最大的特点是应用的丰富性。在无线网络方面,WiMAX的作用与WIFI类似,负责将笔记本这样的终端连接到互联网。而在IP固定网上面,WiMAX技术可以成为线缆和DSL的无线扩展部分,从而实现无线宽带接入。而在移动通讯网络方面,WiMAX更是能够利用移动IP网络提供各种网络服务,实现手机永久在线的目的。
    就拿以TD—SCDMA、WCDMA和CDMA2000组成的传统3G与WiMAX对比,传统3G的最大传输半径是30公里,WiMAX的则大约是这个数字的量杯—50公里。在传输速度上,WiMAX在10公里范围内可以提供70Mbps的带宽,要知道固定IP网中,ADSL最大的带宽不过8Mbps,小区宽带一般也只有10Mbps。而移动通讯网络的传输速度则更低。
    这样高的带宽将给手机带来什么?远程下载大容量视频、武装接收高精度电视画面、高速访问互联网,这些应用都能够轻而易举完成,在手机上能够享受到比在家中固定宽带更为过素的网络服务。现在假设我们通过手机观看电影,一部500MB的  RMVB视频文件可以在5分钟内传输到手机上,这样的速度在固定宽带网络上也是很难出现的。
    与固定宽带网络部同,移动通讯网络在技术上的限制很大,传输速率始终徘徊在几百Kbps左右。大家非常熟悉的GPRS最高传输速率是115Kbps。3G标准中的WCDMA为2Mbps,TD—SCDMA同样为2MBPS。同样拿一个500MB的视频文件进行测试,GPRS理论上最快也需要10个小时左右,WCDMA与TD都需要30多分钟,其中的差距是相当明显的。
    由于速度限制,就带来连锁反应:使用数据增值业务的用户数量偏少,数据增值业务无法形成规模效应—移动运营商无法保证稳定应收,只能从价格上增加收入—价格反过来继续限制用户是翁数据业务,这样就导致一种恶性循环出现,从而导致全球范围的移动通讯数据业务严重滞后。
    如果WiMAX真正投入商用,那么速度的问题将会完全得到解决,从而真正解决移动数据增值业务无法吸引用户的问题,使得整个手机应用的面貌都发生翻天覆地的变化。
    更为重要的是,WiMAX的实质是移动IP网络传输,语音通话完全可以通过互联网进行,这样就带来一个前的结果,手机通话的理论成本降为零,实现免费通话的目的,更能够实现零成本的大面积漫游。
  
二:投靠3G,WiMAX加速进入移动通讯业

    在美国加利福尼亚州好莱坞举办的Rize  at  wte  Sundance  Film电影节上,英特尔公司为了显示WiMAX技术的威力,通过远在12英里以外的服务器,向会场观众提供了多部高清晰电影,当时就引起了很大的轰动。
    由于英特尔对WiMAX技术自信满满,在随后游说全球各地运营商甚至政府部门时,英特尔方面一向持着这样的观点:3G已经完全过时,没有必要用,应该直接过渡到以WiMAX为代表的4G上面。与此同时,英特尔积极扩大WiMAX联盟,将手机巨头诺基亚、电信网络设备商北电网络拉入其中,壮大WiMAX的声势。
    但是也特尔很快发现一个要命的问题,那就是一旦WiMAX要进入移动通讯领域更多市场,根本无法找到属于这项技术的频段。因为所有移动通讯网络的频段都已经分配给全球三大3G标准了。而没有频段,WiMAX就注定只能作为移动讯网的补充,或者对城市局部进行覆盖,根本不能形成大规模的移动通讯网络搭建。更让英特尔恼火的是,如果拿不到全球统一频段,这项无线宽带技术牙根就无法实现区间漫游,而这对移动通讯网络来说简直是致命的。
    英特尔之所以这么迟才意识到频段的问题。最主要是因为2005年之后, 随着802.16X升级为D和E两个版本,WiMAX出现了固定无线网络与移动无线网络两部分。802.16D为基础的WiMAX固定无线网络由于能够直接与现有固定有线网络结合,所以电信运营商都持欢迎态度,英特尔也能够轻松地进入各个地区布网。但是802.16E为基础的WiMAX移动无线网络直接对抗的是移动通讯运营商的现有网络,所以遇到很大阻力,各个地区的政府部门都不愿意让出频段给WiMAX用于移动通讯。
    在这样的情况下,为了继续保持全球扩张的速度,英特尔就选择把WiMAX自降身份,回到3G阵营成为全球标准,从而获得属于自己的频段。正是在这样的背景下,美国政府全力支持WiMAX,从而将这项无线宽带技术推到了全球3G标准的宝座。


2007年8月19日星期日

Ubuntu屏幕分辨率和驱动设置加入图型用户界面

遥想当年,当要改变分辨率或驱动的时候,我们不得不编辑xorg.conf文件或是重新配置X.org文件,不过现在这些"美好"的时光已经一去不复返。 它们将在ubuntu 7.10中出现,就在几天前的一次更新中,加入了用户可通过图形界面来更改xorg.conf文件的功能。

Remember the good old days when to change a screen resolution or driver, you had to edit xorg.conf or reconfigure X.org? Those fine times are now over, or they will be, with the release of Ubuntu 7.10. As of an update from a few days ago, users are now able to access a graphical user interface for editing xorg.conf, though only for graphic and display settings. This tool has support for dual monitors at the moment, and with the release of X.org 7.3 it will be possible to add even more. You can turn on and off both (or one) of your monitor(s), change the available resolutions, orientations, and set mirror or exteneded desktops.

displayconfiggtkdriver.png

On the Graphics Card tab, you have a selection of drivers and video memory. You can pick your graphics card and have it select a driver for you, or you can choose the driver yourself (useful for binary ATI/NVIDIA drivers).

displayconfiggtk.png

The Test feature as of writing is a little buggy, but this is an alpha version still; updates will follow.

This feature is actually Ubuntu-specific at the moment, though other distributions are sure to adopt it soon. It is part of Ubuntu 7.10's "Bullet Proof X" blueprint that states, in a general sense, that if X for some reason fails to start, then it will fall back to a failsafe mode with this GUI running to help get you back on your feet.


There is much improvement to be made with X as 7.3 releases, but whether this will make it into Ubuntu 7.10 in time is another story. Feature freeze is now in effect, however it was broken for an X update once before. Whether we'll see it all depends on when it is released. Count on FOSSwire for our take on X.org 7.3 later this month or next.


来源:http://fosswire.net/2007/08/17/ubuntu-getting-xorgconf-gui/