Mar 23

Rack up a few years in tech journalism and it’s all too easy to become blasé. Would sir care for a new six-core processor? Perhaps an expensive SSD would suit sir better? Very well, if you must. However, casual but comprehensive access to the best kit also makes it abundantly clear just how much impact any upgrade has on the end-user experience.

Despite my proven predilection for slices of silicon, it’s not graphics chips, SSDs or even CPUs that top the tables. Instead, a decent LCD display is the single best and longest lasting investment you can make for your PC. There’s nothing else as transformative to your day-to-day computing pleasure.

As ever, there is a catch. LCD panels are blighted by baloney. By that I mean that the official specifications quoted by monitor manufacturers are often misleading at best. That’s partly because you get far more variance from one supposedly identical LCD panel to the next than you do, for instance, with two CPUs. But I reckon it’s also because monitor makers know that punters don’t have the expertise or equipment to keep them honest. How is your average Joe supposed to confirm his pricey new panel delivers on its alleged 1,000:1 contrast ratio? Frankly, he can’t. By contrast – no pun intended – it’s trivial to check whether a CPU really hits its claimed clockspeed or if one graphics card cranks out more frames per second than another.

Despite all that, a few simple factoids will put you en route to something approaching flat panel perfection. Firstly, forget contrast ratios, viewing angles and claimed colour depth. It’s all about the panel type.

There are three key LCD panel technologies: TN, IPS and PVA. TN is cheapest and nastiest. Nippy pixel response aside, it falls short of the other two by every image quality metric. IPS is usually the choice of graphics professionals thanks to its superior colour accuracy, while PVA offers the deepest blacks and most vibrant images, making it a good choice for general use.

The key point is that panel type trumps any other specification. The latest TN panels, for instance, are claimed to achieve the same 1,000:1 static contrast as a good PVA monitor. And yet there’s no doubting that, subjectively, blacks look much better on a PVA panel. A further weakness of TN tech is colour depth. Truth is, TN panels are only capable of 6 bits per colour channel. That works out at around 250,000 colours, compared to the minimum 16 million delivered by PVA and IPS.

To compensate, most TN monitors use a trick called dithering. This involves approximating an intermediate colour by rapidly jumping between two adjacent colours. If that seems like a kludge, it is. Indeed, look closely at some TN panels and you can see the pixels fizzing away as they hop between colour states. Apparently, this is good enough for nearly all makers of TN monitors to claim 16 million colour capability. Shocking.

Next, beware fancy-sounding image enhancement technologies. The most common are pixel overdrive and dynamic contrast. The first is designed to improve the responsiveness of LCD panels by pumping elevated voltages into the pixels. While often effective, it can be problematic. If used too aggressively, it can generate a visual artifact known as inverse ghosting, which takes the form of a dark trail behind moving objects.

Ironically, overdrive can also introduce a noticeable delay between the output from the graphics card and the image displayed. Known as input lag, it’s typically noticed as laggy response to mouse inputs. At it’s worst it can make your PC feel infuriatingly sluggish.

As for dynamic contrast, that’s a ruse that adjusts the backlight intensity on the fly to suit the brightness of the image being rendered. It sounds like a good idea in theory, but thanks to the laggardly response of the CCFL backlights found in the vast majority of monitors, it doesn’t work well in practice. In fact, it’s so ineffectual I suspect the only reason it exists is because it’s cheap to implement and allows manufacturers to fluff up their figures. Disgracefully, some manufacturers are not always explicit about whether dynamic technology is responsible for their quoted contrast performance. But it’s pretty easy to tell. Anything over 1,000:1 and certainly anything over 3,000:1 will very likely be courtesy of dynamic contrast.

Finally, remember that, to date, any monitor claiming to be ‘LED-powered’ is just a conventional LCD display with a big, dumb LED backlight. Local dimming, as seen in HDTVs, has yet to arrive in PC monitors – so don’t say I didn’t warn you.

Tags: API, Computing, CPU, journalism, performance, processor, silicon, Technology, type, XP
Feb 23

Twitter has been the social-networking world’s flavour of the moment for quite some time, however it’s not without its issues.

Could anything be more dangerous to the modern celebrity than Twitter? The media has always been ready to pounce on famous personalities’ smallest mistakes, but Twitter lends its high-profile users a foghorn. If Jonathan Ross (@Wossy) wasn’t already in enough trouble for leaving lewd messages on Andrew Sachs’ answering machine, his antics on Twitter made him an even juicier tabloid target. “Utterly unwepentant” sniffed The Daily Mail after Ross wrote an update stating “Suspension is fun” on the micro-blogging service during the period that his shows were off-air. Another Mail headline branded the 49 year-old presenter “shameless” after he tweeted, “I am very polite in person. I’m just not great with answering machines.”

And Ross isn’t the only famous Twitter user to find themselves in hot water following a carelessly worded tweet. The BBC’s technology correspondent Rory Cellan-Jones (@ruskin147) was asked via Twitter why he chose to omit Wordscraper from a piece on Facebook’s word game applications. “’Cos i couldn’t be bothered!” came the reply. Cellan-Jones’s response was promptly republished on a blog along with the withering comment, “Years from now, when British journalism has finally breathed its last, this phrase will be engraved on its tombstone.”

However, Cellan-Jones seemed to be intrigued rather than embarrassed by the matter, using it as inspiration for a blog on the tricky business of working out what is and isn’t appropriate to say on social-networking sites. “My throwaway remark has been turned into the basis for an indictment of the whole of British journalism,” he commented. “[It’s] a useful reminder that Twitter – like so many other online forums – is a public place, and what you say there may be used in evidence against you.”

To tweet, to whom?

Most of the time, people don’t see danger coming. “Because it’s more immediate, people are perhaps thinking even less about what they do,” says Iain Connor, a partner at technology specialist law firm Pinsent Masons. Tweets might have a short shelf life, he argues, “but that’s not to say that sufficient damage can’t be done in a short period of time”.

One person who knows this better than most is basketball team owner Mark Cuban (@mcuban). Cuban owns the Dallas Mavericks and, after a game in March, he used Twitter to complain that an opposing player wasn’t whistled for a foul. “How do they not call a tech on JR Smith for coming off the bench to taunt our player on the ground?” he fumed. A few days later the NBA smacked him with a $25,000 fine. Still, the billionaire managed to see the funny side of his punishment, adding “Can’t say no one makes money from Twitter now,” as he paid up.

You may not be a celebrity, but the wrong words could find you out of a job, in hot water with friends or facing charges.

Mark Borkowski is a PR expert who has represented Michael Jackson, Eddie Izzard and Van Morrison. He says that Twitter is “dangerous for anybody”, but that it poses particular risks for stars. “You’re live all the time – no editing,” he says. “[What someone] thinks about in the nanosecond that they’re tweeting could become an enormous issue, and it’s global.” No stars seem to have been permanently damaged by mis-tweeting yet, but it’s possible, says Borkowski. “It depends what you say. If you make a racist or outrageous comment then it’s very difficult to come back from.”

Today’s headlines

Twitter isn’t all self-immolation on the part of celebrities, either. With the ability of tweets to spread like wildfire – first across Twitter itself and then across news websites worldwide – a hacked account spells disaster. “Britney has passed today,” said a tweet on Britney Spears’ account (@britneyspears) after it was hacked in June. Spears had more than two million followers at the time, meaning that the ‘news’ travelled fast. But this isn’t the first – or last – time that Spears’ account has been hacked. Mid-November saw her account spammed with updates telling the world that the singer had started worshipping Satan, and back in January followers were surprised to see this message from the star: “Hi y’all! Brit Brit here, just wanted to update you all on the size of my vagina. It’s about four feet wide with razor sharp teeth.” Perhaps Spears and her team need to take password security a little more seriously in future.

Twitter attempts to limit the potential damage done by celebrity impersonators by using Verified accounts. “That means we’ve been in contact with the person or entity the account is representing and verified that it is approved,” says the site. But what about the impersonators that Twitter knows exist, yet continue to post in the celebrity’s name?

Verified accounts were Twitter’s first push towards professional services. Commercial accounts are on the way.

“Twitter’s pretty poor at actually taking off fakes,” says Borkowski, but the amount of damage done by hackers is usually limited. Big social-networking sites are “incredibly reasonable” when it comes to removing objectionable content, according to lawyer Iain Connor. “They need to keep their credibility [and] they need to keep their trusted brand,” he says.

Verified accounts don’t mean safety for the celebrity, however: they simply confirm that it was probably the star who wrote the message. Without the usual filter of PR managers, talent agents or editors to prevent the publication of anything potentially damaging, such accounts are a dream for the media. Twitter is “a newswire direct from the celebrity” that newspapers turn into stories, confirms Borkowski.

Business as usual

But even if individual stars are at risk from Twitter, corporations should be safe, shouldn’t they? After all, “just about every organisation has a PR department now,” according to Managing Director of Racepoint PR, Blaise Hammond. Racepoint PR manages public relations for social media sites such as Digg, eHarmony and BlogHer.

The illusion that all companies tread carefully with new services such as Twitter was shattered in June, however, when furniture retailer Habitat (@habitatuk) attempted to cash in on the site. The store tweeted about deals it was offering, then attempted to give its tweets greater visibility by attaching unrelated hashtags (a hash symbol followed by a keyword that enables Twitter users to search for and follow a popular ‘trending topic’). “#Mousavi Join the database for free to win a £1,000 gift card” read one tweet, disastrously mixing the Iranian presidential candidate with a drive to sign people to its mailing list. “#iPhone Our totally desirable Spring collection now has 20% off!” read another.

Habitat acted swiftly to remove the offending tweets, but the damage was done. The story was picked up by mainstream news organisations such as Sky and the BBC, provoking outrage that the company was abusing the hashtag system and essentially spamming users. Habitat was quick to acknowledge its blunder and offered contrition. “We are treating this very seriously,” said the company. “We were shocked when we discovered what happened and are very sorry for the offence that was caused. This is totally against our communications strategy.”

Adding irrelevant hashtags to marketing tweets was “incredibly stupid”, according to Hammond. “It was very easy to find out, and they got found out straight away.” He says companies need to think carefully about how they tweet. “Thoughtlessness coupled with stupidity equals big impact,” he says. “Common sense is missing in so many cases.” Even when a company has a specific Twitter strategy, “more often than not it’s not as good as it could be because they just don’t think about it enough”.

Gun, foot, aim, fire

While Twitter clearly poses problems for high-profile Twitterers, it can be a threat to individuals as well. Few know this better than Connor Riley (@theconnor), a student at the University of California in Berkeley who was offered a summer internship last year by networking giant Cisco.

“Cisco just offered me a job! Now I have to weigh the utility of a fatty paycheck against the daily commute to San Jose and hating the work” she tweeted to her followers. But she soon regretted it. “Who is the hiring manager? I’m sure they would love to know that you will hate the work. We here at Cisco are versed in the web” tweeted Tim Levad, a services consultant at Cisco, in response. Before long, the story had hit MSNBC, The Los Angeles Times and hundreds of blogs worldwide. Riley now calls her misguided tweet “a stupid mistake”, and says that it was the result of treating Twitter like Facebook, where only your close friends are able to see what you say.

Mark Borkowski advises celebrities on how to manage their ‘brand’ through social media sites.

However, Iain Connor notes that “it’s perfectly legal” for companies to monitor what their employees are up to on social-networking sites. “As an employee you have a duty of good faith to your employer,” he says. “That duty of good faith extends not just to your nine to five.”

So what’s a Twitterer to do? “Don’t drink and tweet,” advises Borkowski. More importantly, don’t take it too seriously. Borkowski says social media refusniks are dying out. “Take it with a pinch of salt and it’s fun, it’s interesting, and you learn more,” he recommends. Just remember to think twice before you say anything that you wouldn’t want your mother – or your employer – to read.

Tags: application, blog, business, cell, cisco, Communications, database, facebook, Hackers, hash, headlines, iphone, iss, journalism, marketing, money, MSN, Nano, network, Networking, online forums, organisations, Personal, rms, security, Spam, system, Technology, web, XP
Sep 09

Telkcom has recognised that democracy requires that citizens have the right to know about activities that affect their lives and the recognition of the importance of their participation within the democratic system to make it work and flourish.
In her welcome address Bintu Petsana, Acting Group Executive: Corporate Communication at the opening of Highway Africa said that it was important to have the right of expression and human rights culture .
Petsan said the precondition was that people could not be regarded as consumers or markets or passive recipients in a multi-directional social dialogue.
“We look at the media to provide the framework for such a discourse and to act as a mechanism that allows citizens to develop their level of awareness,” explained Petsane.
She observed that when one speaks of informed citizens with a heightened level of awareness, one would have to search far to better illustrate the power of the media in the 21st century information society, than the war in Iraq.
Looking at Media Columinist, Stephen glover who writes:
“ As any armchair general will tel l you, the second Gulf war is something else. It is the first media war. This means that we experts, safely ensconced on our sofas, can follow battlefield events almost before they happen. It has never been remotely like this before. The advances of technology allow reporters to stand before a camera in the middle of Iraqi desert an dbring the war into our sitting rooms.”
Petsan observed that since these words were written a few years ago, the proliferation and increasing sophistication of information communication technologies (ICTs) has given the war and other events be it mundane or global importance, an immediacy unparelled in the history of Journalism.
“It is citizen Journalism in action, and it is here to stay. It is driven by ICTs and it will change the way we evaluate information and view the world,” said Petsan

Tags: camera, consumers, information, information society, journalism, system, Technology, XP