The Samsung Galaxy S5 could be presented Feb. 24

Samsung has announced Tuesday the presentation of a new device on 24 February at the Mobile World Congress . In all likelihood, it could be the future Samsung Galaxy S5 .

As every year, we suspected that Samsung would announce its next high-end smartphone and seas between February this year. The date is now confirmed, it will be on February 24 next in Barcelona, ​​during the Mobile World Congress . This is the first time since the S2 Samsung sees the first international exhibition on mobility to present one of its flagship smartphones. For the last two models, the Galaxy S3 and S4 , the Korean manufacturer had indeed privileged announcement with great fanfare at events dedicated.

The Samsung Galaxy S5 could be available in metal or plastic release depending on the choice of the user, with Touchwiz interface review , a fingerprint reader fingerprint as the HTC Max One or iPhone 5S and a 64 processor bits .

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Chinese researchers invent water jet printer

Chinese researchers at Jilin University are able to develop a new kind of printer. Finished using inkjet, instead they opt for a natural element simply: water. Ecological and inexpensive design that would reduce waste significantly.

The prototype was developed by the team of Sean Zhang Xiao-An. It is a standard printer ink cartridge which has been replaced by water. It works with the paper specially designed for this purpose. With invisible dyes carefully integrated, the paper may reveal its contents in contact with water, as a developer. Once dry, it returns a blank page, reusable several times. Thus, printing is legible obtained during 22 hours. Beyond this period, the writing evaporates and it is even possible to remove the sheet by heating to 70 ° C in less than 30 seconds. According to tests, the method works up to 50 print / erase cycles and with the ability to print the texts in four colors (blue, magenta, yellow, purple).

In the future, designers hope to improve the life of their paper and eventually develop a full-color model that is beneficial to society and the environment.

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The best and worst of Facebook in 10 years

In 2004, Mark Zuckerberg put online a site that would become the most popular social networking site: Facebook. It is celebrating its tenth year, and we return to the occasion on the most significant events. Creating the Thefacebook billion users through the acquisition of Instagram or IPO, relive 10 years of Facebook in a few key dates.

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Compact Powerhouse: Volkswagen donated the Golf R 300 PS

300 hp and all-wheel drive are also in ice and snow a weapon (Photo: Volkswagen)

Volkswagen launches the new Golf R is one of the sportiest compact models of the world the world on the road. Under the hood lies a newly designed turbo direct injection petrol engine (TSI) with an output of 221 ​​kW / 300 PS.

The new four-cylinder 30 hp more, but it should be up to 18 percent more economical than its predecessor. 300 horsepower from a four-cylinder sounds spectacular, but the same performance also draws the Audi S3 Sportback from a four-cylinder. Like its predecessor, the new Golf R has a permanent all-wheel drive . For pure dynamics should provide a re-blank, Lowered sports suspension.

Spurtstark and economical

After just 5.1 seconds the manually shifted Golf R will be 100 km / h (previous model: 5.7 s), with automatic double-clutch transmission (DSG) defines the sports car to sprint even in 4.9 seconds back. The electronically limited top speed of 250 km / h Despite the sporty performance and the increased power consumption of the Golf R compared to the previous 8.5 was to 7.1 l/100 km are reduced.

In the interior the aggressive appearance continues. (Photo: Volkswagen)

LED light and leather sports steering wheel

Standard bi-xenon headlights with a newly designed LED daytime running lights, dark-red LED tail lights and an exhaust system with four chrome-plated tailpipes give the Golf R also visually recognizable as aggressive sports car. In the interior, the Golf flagship sets with sports seats in the material "substance-Alcantara", a three-spoke leather sports steering wheel , an ambient lighting, climate control and aradio-CD system with touch screen in scene.

Video: VW Golf R - Driving Report

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A sphere to replace solar panels

Designed by German architect André Broessel, produce cleaner energy with a low carbon footprint and better performance in the use and conversion of solar energy Rawlemon the project aims.

The project consists of a perfectly symmetrical and transparent that can easily be integrated into buildings spherical shape. This method would be 35% more efficient than traditional solar panels.And testing the first prototypes have achieved 150 kW/m2. More weather resistant, this solar sphere converts to over 70% more energy than a conventional panel. It works day and night with the sun or the moon.

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Now PlayStation between beta

The streaming service games on PS3 and PS4 , named PlayStation Now , just come in beta. Sony has distributed access to some selected users.

U.S. Internet users who were enrolled in the gaming service at the request of Sony receive as and when invitations to test PlayStation Now . Recall that the service plans to allow playing through a system of streaming games on any compatible device. For now, only the PS3 and PS4 are able to make it work, but then the Sony plans to extend the PS Vita, and its connected TVs Bravia range.

To play in good conditions, Sony recommends therefore logically leave her permanently connected to the Internet, console and have a connection with a minimum speed of 5 Mb / s. Currently, this beta phase appears limited American players, and Sony says nothing about its duration, or the opportunity to see this beta spread to other territories

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Facebook has completely changed its "News Feed"

If Facebook regularly makes changes to its interface, the new newsfeed, already in the hands of some users, is a real change. Simplification, visibility and customization are the objectives of the social network.

Facebook is trying to modernize and launch its new news feed ( Feed News in English). The goal of social network make its platform easier to use, more design and especially more personalized and customizable.

On the Facebook blog , Chris Turitzin, product manager of News Feed, says he works to "improve the ranking algorithms to better differentiate the posts of pages and posts of friends."

Then he advises administrators Pages favor of publications with the "Share" that includes a photo thumbnail, rather than just status "text" written with a link. To attract the eye of the user, and promote the "click".

Development of visual content

Administrators Pages, such as trademarks or media, will have to comply with these recommendations, since the new newsfeed favors a visual content. New graphics and more vibrant colors should take place. The images are larger, their legends over and profile picture shifted to the left.

In general, the new Facebook wants more visibility, with the focus on the activities of friends. The information could fall by the wayside, as beloved fan pages, additions of friends or check-in (location of the friend) are now clearly displayed in the newsfeed. "Every news has been redesigned to highlight what your friends are sharing" promises Facebook.

Facebook screen capture

The new additions of friends now appear clearly in the newsfeed.

Customize Facebook

Beyond visibility, Facebook has sought to focus on customizing the news feed, there is the biggest news.

It will be possible to sort the contents displayed in the newsfeed. Before, it was limited to sorting "Latest" or "Featured", not always easy to differentiate between one and the other. In the new News Feed , the "Most Recent" sort is still there and class news in reverse chronological order.

But other functions appear: "All Friends" which displays only the news from friends, then excluding pages and groups, "Photos" which passes only photos of friends and fan pages, "Music" to keep current events followed artists and music played by friends ... and many others.

Screenshot facebook

The tool bar on the right to filter news to sort content

Standardize all media

One of the weaknesses of Facebook compared to its competitors were weak interface on mobile and tablets too different from that on the web. With this update the News Feed , the Group ensures that the user "find the very face of Facebook on all platforms: mobile, tablet or the web."

This standardization is especially marked by an identical menu directly inspired by the mobile carrier. Features and database links are always at the top left, but in addition to that also found Chatterbox previously placed in a toolbar to the right.

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