Tuesday, May 13, 2008

Bridges

A bridge is a device that allows you to segment a large network into two smaller, more efficient networks. If you are adding to an older wiring scheme and want the new network to be up-to-date, a bridge can connect the two.

A bridge monitors the information traffic on both sides of the network so that it can pass packets of information to the correct location. Most bridges can "listen" to the network and automatically figure out the address of each computer on both sides of the bridge. The bridge can inspect each message and, if necessary, broadcast it on the other side of the network.

The bridge manages the traffic to maintain optimum performance on both sides of the network. You might say that the bridge is like a traffic cop at a busy intersection during rush hour. It keeps information flowing on both sides of the network, but it does not allow unnecessary traffic through. Bridges can be used to connect different types of cabling, or physical topologies. They must, however, be used between networks with the same protocol.

Monday, May 05, 2008

Use by drivers

Using Mobile phone while driving is a common but controversial. Using a mobile phone while driving is an obstruction to vehicle operation that can increase the risk of road traffic accidents, but different studies have found different relative risks (RR).

Meta-analysis by The Canadian Automobile Association and The University of Illinois found that response time while using both hands-free and hand-held phones was approximately 0.5 standard deviations higher than normal driving.

Other research has found that using a mobile phone while driving may reduce and also divert the driver's concentration and reaction time. People in or near their 20s who use a mobile phone while driving have the same reaction time as 72-year-olds.There is a law which restricts drivers under the age of 18 from using a mobile phone at all. According to this law $20 fine for the first offense and $50 fines for each subsequent conviction…

Tuesday, April 29, 2008

Social Networking Sites: Safety Tips for Tweens and Teens

While social networking sites can increase your circle of friends, they also can increase your exposure to people with less-than-friendly intentions. Here are some things you can do to socialize safely online:

* Think about how different sites work before deciding to join a site. Some sites allow only a defined community of users to access posted content; others allow anyone and everyone to view postings.
* Keep some control over the information you post by restricting access to your page.
* Keep your full name, Social Security number, address, phone number, and bank or credit card account numbers to yourself.
* Make sure your screen name doesn't say too much about you. Even if you think it makes you anonymous, it doesn't take a genius to combine clues to figure out who you are and where you can be found.
* Post only information that you are comfortable with others seeing and knowing.
* Consider not posting your photo. It can be altered or broadcast in ways you may not be happy about.
* Flirting with strangers online could have serious consequences. Some people lie about who they really are.
* Be wary if a new friend wants to meet you in person. If you decide to meet them, meet in a public place, during the day, with friends you trust. And tell a responsible adult where you're going.
* Trust your gut if you have suspicions. If you feel threatened by someone or uncomfortable because of something online, tell an adult you trust, and then report it to the police.

Tuesday, April 22, 2008

Pop Art

It is a moot point as to whether the most extraordinary innovation of 20th-century art was Cubism or Pop Art. Both arose from a rebellion against an accepted style: the Cubists thought Post-Impressionist artists were too tame and limited, while Pop Artists thought the Abstract Expressionists pretentious and over-intense. Pop Art brought art back to the material realities of everyday life, to popular culture (hence "pop''), in which ordinary people derived most of their visual pleasure from television, magazines, or comics.

Pop Art emerged in the mid 1950s in England, but realized its fullest potential in New York in the '60s where it shared, with Minimalism, the attentions of the art world. In Pop Art, the epic was replaced with the everyday and the mass-produced awarded the same significance as the unique; the gulf between "high art'' and "low art'' was eroding away. The media and advertising were favorite subjects for Pop Art's often witty celebrations of consumer society. Perhaps the greatest Pop artist, whose innovations have affected so much subsequent art, was the American artist, Andy Warhol (1928-87).

The term "Pop Art'' was first used by the English critic Lawrence Alloway in a 1958 issue of Architectural Digest to describe those paintings that celebrate post-war consumerism, defy the psychology of Abstract Expressionism, and worship the god of materialism. The most famous of the Pop artists, the cult figure Andy Warhol,recreated quasi-photographic paintings of people or everyday objects.

Monday, April 07, 2008

blogs123
Nokia N78 - packed with only the best techs
Nokia N78 is designed to take all advantage of the new suite of Nokia services, including the Nokia Music Store, Nokia Maps, and Share on Ovi etc.....

The Nokia N78 packs a powerful range of technologies, including integrated A-GPS, with free Nokia Maps, WLAN and high-speed HSPDA 3G connectivity, a 3.2 megapixel camera with Carl Zeiss optics, and support for microSD memory card, currently available at up to 8 GB. The novelties of the N78 are geotagging of photos and an integrated FM transmitter that allows music to be played on any FM radio, in a car or at home.

The N78 is expected to start shipping during the second quarter of 2008, with an estimated retail price of approximately 350 euros,before taxes....

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Monday, March 24, 2008

WAP / GPRS / UMTS / HSDPA multiplayer game

A GPRS connection which is regular among GSM mobile phones can be used to share the data globally. Developers can connect a mass number of mobile games with a single server and distribute data among the players. Some developers have achieved cross platform games, allowing a mobile player to play against a PC. WAP and GPRS best supports twist based games and small RPG games. Most of the counties have a weak GPRS velocity in their carriers. In these types of games, the game communicates with a global server which takes action like a router between the mobile phones. Faster connections like UMTS and HSDPA allow real time multiplayer gaming though speeds will still supply some level of lag. Currently, there are a lot of multiplayer mobile games entering the market.

Monday, March 17, 2008

Features of Mobile phone

There are significant questions as to who first invented the camera phone, as numerous other people acknowledged patents filed in the early 1990s for the device, including David M. Britz of AT&T Research in March of 1994 and Philippe Kahn, who claims to have first invented it in 1997. The camera phone now holds 85% of the mobile phone marketplace. Mobile phones often have features beyond transfer text messages and making voice calls, including Internet browsing, music (MP3) playback, memo recording, personal organizer functions, e-mail, instant messaging, built-in cameras and camcorders, ringtones, games, radio, Push-to-Talk (PTT), infrared and Bluetooth connectivity, call registers, ability to watch streaming video or download video for later viewing, video calling and serve as a wireless modem for a PC, and soon will also provide as a console of sorts to online games and other high quality games (e.g. Final Fantasy Agito).