Archive for the ‘ Technology ’ Category

Is Bitcoin The Most Dangerous Technological Project Since The Web Itself?

Launch examines Bitcoin in an article that discusses the controversial P2P electronic currency, outlining what they’ve learned after researching it, and making some predictions for the future.

Bitcoins are a virtual peer-to-peer currency that can be sent and received directly from their site, or via and escrow service or currency exchange. The benefits are that your coins can’t be frozen, tracked or taxed, and transaction costs are very low.

From the article:

A month ago I heard folks talking online about a virtual currency called bitcoin that is untraceable and un-hackable. Folks were using it to buy and sell drugs online, support content they liked and worst of all — gasp! — play poker.

Bitcoin is a P2P currency that could topple governments, destabilize economies and create uncontrollable global bazaars for contraband.

…Bitcoins are created by a complex algorithm. Only 21M can be made by the year 2140. Your desktop bitcoin software can make bitcoins, but at this point the electricity and time it would take to produce a bitcoin is larger than the actual value of a bitcoin (your laptop might take five years to make one, and they currently trade at $6.70 per bitcoin [ see https://mtgox.com/trade/buy for the latest exchange rate ].

Bitcoin miners use super cheap GPUs (not CPUs) to create the coins, but as more people come online to make them, the algorithm adjusts so that one block can only be made every 10 minutes.

Here is what Launch stated after a month of research:

1. Bitcoin is a technologically sound project.
2. Bitcoin is unstoppable without end-user prosecution.
3. Bitcoin is the most dangerous open-source project ever created.
4. Bitcoin may be the most dangerous technological project since the internet itself.
5. Bitcoin is a political statement by technotarians (technological libertarians).
6. Bitcoins will change the world unless governments ban them with harsh penalties.

As a result, they add that they are “100% certain” that governments will start banning bitcoins in the next 12 to 18 months.

Apple release iOS 4.3 for iPhone and iPad

The latest software update for the iPhone and iPad  has been officially released by Apple as iDevice users can now download iOS 4.3 from their iTunes accounts.The updated mobile operating system, which went live yesterday evening, will begin shipping pre-installed on devices tomorrow as the Apple iPad 2 hits stores across the US ahead of a UK arrival in two weeks time on March 25th.

Downloadable via the latest version of iTunes, iOS users who sync their devices to their Mac or PCs will get a feast of new features that includes the ability to customise the side-lock come mute switch on the Apple tablet as well as adding support for the recently announced HDMI video adapter, unveiled alongside the second-generation iPad.

The biggest feature draw of the iOS 4.3 software update, however, is the ability to turn your iDevice into a personal Wi-Fi hotspot with up to five further devices able to access the internet via the single 3G to Wi-Fi conversion point. Other new additions to iOS 4.3 include increased AirPlay features that allow users to stream content direct from third party apps to the latest edition Apple TV box and compatible speakers.

What is your favourite aspect of iOS 4.3 and what are you still waiting for Apple to introduce to its mobile OS? Let us know via the T3 Twitter and Facebook feeds. If you haven’t already taken a peak, why not watch our hands-on video with the Apple iPad 2, the first device to come equipped with iOS 4.3.

HTML5, Silverlight headed to WP7 browser

Microsoft released on Wednesday a Firefox browser add-on extending HTML5-based video on the company’s Windows 7 OS.

The plugin enables Firefox users to play H.264-encoded video on HTML5 by using built-in capabilities of Windows 7, said Claudio Caldato, principal program manager for Microsoft’s interoperability team, in a blog post. Mozilla Firefox is a principal competitor to Microsoft’s own Internet Explorer browser.

Microsoft has already been offering a Windows Media Player plugin for Firefox, for watching Windows Media content, Caldato said. “This new plugin, known as the HTML5 Extension for Windows Media Player Firefox plugin, is available for download at no cost. It extends the functionality of the earlier plugin for Firefox and enables Web pages that that offer video in the H.264 format using standard W3C HTML5 to work in Firefox on Windows. Because H.264 video on the Web is so prevalent, this interoperability bridge is important for Firefox users who are Windows customers.”

HTML5 is an ongoing update to the HTML specification that adds capabilities for multimedia.

The extension is based on a Firefox add-on that parses HTML5 pages and replaces video tags with a call to the Windows Media Player plugin, enabling content to be played in the browser. Firefox in some cases might fail to play a video even if the add-on is correctly installed, because a page might use a call to canPlayType to determine if the browser can play H.264 content, Microsoft said in release notes for the extension. “Typically the check is done either using createElement(‘video’) or getElementsByTagName(‘video’) and then call canPlayType(‘video’mp4′). In both cases, the call will return empty string even if the Add-on is installed and the browser could play H.264 videos,” Microsoft said.

Also, the current version of the add-on uses Windows Media Player Plugin APis to control video playback, thus creating differences between methods and properties defined in the HTML5 standard and those in the Windows Media Player plugin. The company seeks to fix these limitations in the next limitation of the add-on.

Double domain of WordPress

Can WordPress binding double domain?Most people will tell you not,but I have a unique skill to set it,now, follow me!

Suppose you have two domain such as abc.com and efg.com,and then you must open your FTP services.

Open your wordpress dir and find out the file “wp-config.php” and add some code as follow:

$_asdfasdf_myurl = ‘http://’.$_SERVER['HTTP_HOST'];

define(‘WP_HOME’, $_asdfasdf_myurl);

define(‘WP_SITEURL’, $_asdfasdf_myurl);

unset($_asdfasdf_myurl);

Then,you can also edit the URLs in wordpress data table by run the SQL statement “update TABLENAME  set FIELDNAME = replace (FIELDNAME,’EFG.COM’,'ABC.COM’)”. This statement means replace “ABC.COM” from “EFG.COM” in FIELDNAME , TABLENAME.

Up to this, your wordpress can binding double domain ,now, go and set the Domain !

Recommendation 20 jQuery plugin

1. Dynamic tooltip
Very cool tooltip! It’s very well made because it consists of cool transition effects and it also has a transparency and a drop shadow effect.

2. Popup Bubble
Brilliant tooltip! It looks so simple but it has awesome transition effects. This tooltip could be very useful for clean and simple websites.

3. jQuery Horizontal Tooltips Menu Tutorials
Beautifully made tooltip! This tooltip never disappears but follows when you hover over other links. Such a simple looking tooltip but its animation is brilliant.

4. Prototip
A lot of various very good looking tooltips which look awesome and have beautiful effects. Brilliant peace of work!

5. Coda Popup Bubble
Very nice tooltip with cool transition effect and it also has a drop shadow.

6. Awesomeness
Cool tooltip with nice transition effect and cool transparent border around it.

7. TipTip
Beautifully made tooltip with fade in / out transition effects, transparency and drop shadow effect.

8. (mb)Tooltip
Beautifully made tooltip with nice transition for input fields.

9. vTip
Simple but well made tooltip with a fade in transition effect. It has a cool looking border around it and when this tooltip appears, it also follows your mouse.

10. jGrowl
Cool tooltip which appears when you click on the link and then it sticks on the right-top corner of your window, and disappears after some time or when you close it manually by clicking on the close button. It also has fade in / out transition effects.

11. jQuery Ajax Tooltip
Interesting tooltip which can handle image and text together like a mini page. It has a drop shadow effect.

12. Digg-style post sharing tool with jQuery
Cool digg-style post sharing tool. This tooltip could be very useful for social networking website.

13. Input Floating Hint Box
Interesting tooltip with rounded corners for input fields. Tooltip fades in when you click on the input field and fades out when you click somewhere else.

14. Simpletip
Beautifully made tooltip with fade transitions. When you hover over a link, a tooltip fades in just above or below the link.

15. qTip
Very simple but good looking tooltip. This tooltip is available with rounded corners and also as a speech bubble tip.

16. Orbital Tooltip
Interesting tooltip plugin where you can set manually where your tooltip will show up.

17. Inline HTML Tooltip
Cool tooltip with nice transition effects.

18. tipsy
Interesting good looking tooltip which appears above, below, on the right or left side of the link.

19. Easiest jQuery Tooltip Ever
Simple tooltip but it could be useful to display an image when you hover over a link.

20. BsTip
Various simple tooltips with fade in and fade out transition effects and border around them.

Page Speed:a web performance testing tool

These days, I had some research on the web performance testing tools and found a very useful and very convenient tool to recommend to you today, it is developed by the google: Page Speed.

What is Page Speed?

Page Speed is an open-source Firefox/Firebug Add-on(you can add it only after you add Firefox 3.0.4  above and Firebug 1.3.3 above). Webmasters and web developers can use Page Speed to evaluate the performance of their web pages and to get suggestions on how to improve them.

How to use Page Speed?

After installed,click the icon at the bottom right corner of Firebug to start it, then you can click the Page Speed tab.Note that, when you want to do a  performance analysis by Page Speed, you must load the page first, then click the “Analyze Performance” button, and  Page Speed will rate each item based on the web performance best practices.Finally, it will array the all items according to importance(as shown above).

Here’s how to interpret the color-code scores:

RED:High priority. These suggestions represent the largest potential performance wins for relatively little development effort. You should address these items first.
YELLOW:Medium priority. These suggestions may represent smaller wins or much more work to implement. You should address these items next.
GREEN: Working fine or low priority. If suggestions are displayed, as indicated with a + sign, they probably represent minor wins. You should only be concerned with these items after you’ve handled the higher-priority ones.
BLUEInformational messages only. Either these items don’t apply to this page or there was a problem in running the test.

ps:the web performance best practices:

1、    Avoid CSS expressions
2、    Combine external CSS
3、    Combine external JavaScript
4、    Defer loading of JavaScript
5、    Enable compression
6、    Leverage browser caching
7、    Leverage proxy caching
8、    Minify JavaScript
9、    Minimize request size
10、    Minimize DNS lookups
11、    Minimize redirects
12、    Optimize images
13、    Optimize the order of styles and scripts
14、    Parallelize downloads across hostnames
15、    Put CSS in the document head
16、    Remove unused CSS
17、    Serve resources from a consistent URL
18、    Serve static content from a cookieless domain
19、    Specify image dimensions
20、    Use efficient CSS selectors
21、    Minify HTML
22、    Minify CSS
23、    Serve scaled images
24、    Avoid bad requests
25、    Specify a character set early

What is the standard?

I’m sorry, there is no official standard.But I am now doing such a thing to share with you:

1, Page Speed Score total score must be 80 or above
2, Serious error not more than three, general error not more than 5
3,The error is not allowed : Avoid CSS expressions, Combine external CSS, Combine external JavaScript, Enable compression, Minify CSS, Minify HTML
4, Allowed error, but must be promptly corrected: Leverage browser caching, Leverage proxy caching, Minify JavaScript, Minimize request size, Optimize images
5, Allowed error, and have time to correct: Minimize DNS lookups, Minimize redirects, Optimize the order of styles and scripts, Parallelize downloads across hostnames, Put CSS in the document head, Remove unused CSS