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Weiye Loh

Do avatars have digital rights? - 20 views

hi weiye, i agree with you that this brings in the topic of representation. maybe you should try taking media and representation by Dr. Ingrid to discuss more on this. Going back to your questio...

avatars

Weiye Loh

In Defense of Photoshop: Why Retouching Isn't As Evil As Everyone Thinks -- The Cut - 0 views

  • how many adult women actually take the images in fashion magazines — artificial as they are, feats of makeup and lighting and camera angles, even without retouching — at face value? “Our readers are not idiots,” Christine Leiritz, editor of French Marie Claire, told the New York Times last year, “especially when they see those celebrities who are 50 and look 23.” Most of us who read fashion magazines don’t feel we’re confronting reality when we see a photograph of a grown woman with preteen thighs. (We certainly see enough countervailing tabloid shots to know exactly what celebrity thighs look like.) If such photos enrage us, and often they do, it’s not because they damage our self-esteem, nor — let’s be honest — because we’re constantly fretting, like some earnest psychologist or crusading politician, about the emotional repercussions for adolescent girls. Our interest in altered images is not purely moral; it’s also aesthetic. We believe that a picture should convey, “objectively,” without undue intervention, what the lens originally captured. But these days, come to a fashion, consumer, or celebrity magazine with this quaint puritanical notion in mind, and you’re bound to be disappointed: Many contemporary images are illustrations masquerading as photographs, cartoons composed with a computer rather than a pen.
  • The truth is that most retouched photos fail as aesthetic objects, not because they’re deceptive, but because they’re timid, feeble, and inhibited. Constrained by their origins as photographs, they stop short of embracing full stylization. They force themselves to walk a very fine line: romanticize without being preposterous, improve upon nature without grossly misrepresenting a famous physique with which viewers are familiar. When an apparently hipless Demi Moore graced the cover of W last year, readers blanched. Likewise when Gwyneth’s Paltrow’s head appeared oddly detached from her body on the May 2008 cover of Vogue, giving her an upsetting alien-from-outer-space vibe. What were the editors thinking? That we wouldn’t notice? And yet perversely, artificial as these images are, they’re actually not artificial enough. It would be better, perhaps, if art directors just went all the way, publishing, without apologies, pictures of incarnate Betty Boops or Jessica Rabbits. Too many magazine images nowadays are neither fish nor fowl, neither photographs of integrity nor illustrations of potency. They’re weird in-between creatures, annoying and unsettling.
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    In Defense of Photoshop: Why Retouching Isn't As Evil As Everyone Thinks
Weiye Loh

The Mysterious Decline Effect | Wired Science | Wired.com - 0 views

  • Question #1: Does this mean I don’t have to believe in climate change? Me: I’m afraid not. One of the sad ironies of scientific denialism is that we tend to be skeptical of precisely the wrong kind of scientific claims. In poll after poll, Americans have dismissed two of the most robust and widely tested theories of modern science: evolution by natural selection and climate change. These are theories that have been verified in thousands of different ways by thousands of different scientists working in many different fields. (This doesn’t mean, of course, that such theories won’t change or get modified – the strength of science is that nothing is settled.) Instead of wasting public debate on creationism or the rhetoric of Senator Inhofe, I wish we’d spend more time considering the value of spinal fusion surgery, or second generation antipsychotics, or the verity of the latest gene association study. The larger point is that we need to be a better job of considering the context behind every claim. In 1952, the Harvard philosopher Willard Von Orman published “The Two Dogmas of Empiricism.” In the essay, Quine compared the truths of science to a spider’s web, in which the strength of the lattice depends upon its interconnectedness. (Quine: “The unit of empirical significance is the whole of science.”) One of the implications of Quine’s paper is that, when evaluating the power of a given study, we need to also consider the other studies and untested assumptions that it depends upon. Don’t just fixate on the effect size – look at the web. Unfortunately for the denialists, climate change and natural selection have very sturdy webs.
  • biases are not fraud. We sometimes forget that science is a human pursuit, mingled with all of our flaws and failings. (Perhaps that explains why an episode like Climategate gets so much attention.) If there’s a single theme that runs through the article it’s that finding the truth is really hard. It’s hard because reality is complicated, shaped by a surreal excess of variables. But it’s also hard because scientists aren’t robots: the act of observation is simultaneously an act of interpretation.
  • (As Paul Simon sang, “A man sees what he wants to see and disregards the rest.”) Most of the time, these distortions are unconscious – we don’t know even we are misperceiving the data. However, even when the distortion is intentional it’s still rarely rises to the level of outright fraud. Consider the story of Mike Rossner. He’s executive director of the Rockefeller University Press, and helps oversee several scientific publications, including The Journal of Cell Biology.  In 2002, while trying to format a scientific image in Photoshop that was going to appear in one of the journals, Rossner noticed that the background of the image contained distinct intensities of pixels. “That’s a hallmark of image manipulation,” Rossner told me. “It means the scientist has gone in and deliberately changed what the data looks like. What’s disturbing is just how easy this is to do.” This led Rossner and his colleagues to begin analyzing every image in every accepted paper. They soon discovered that approximately 25 percent of all papers contained at least one “inappropriately manipulated” picture. Interestingly, the vast, vast majority of these manipulations (~99 percent) didn’t affect the interpretation of the results. Instead, the scientists seemed to be photoshopping the pictures for aesthetic reasons: perhaps a line on a gel was erased, or a background blur was deleted, or the contrast was exaggerated. In other words, they wanted to publish pretty images. That’s a perfectly understandable desire, but it gets problematic when that same basic instinct – we want our data to be neat, our pictures to be clean, our charts to be clear – is transposed across the entire scientific process.
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  • One of the philosophy papers that I kept on thinking about while writing the article was Nancy Cartwright’s essay “Do the Laws of Physics State the Facts?” Cartwright used numerous examples from modern physics to argue that there is often a basic trade-off between scientific “truth” and experimental validity, so that the laws that are the most true are also the most useless. “Despite their great explanatory power, these laws [such as gravity] do not describe reality,” Cartwright writes. “Instead, fundamental laws describe highly idealized objects in models.”  The problem, of course, is that experiments don’t test models. They test reality.
  • Cartwright’s larger point is that many essential scientific theories – those laws that explain things – are not actually provable, at least in the conventional sense. This doesn’t mean that gravity isn’t true or real. There is, perhaps, no truer idea in all of science. (Feynman famously referred to gravity as the “greatest generalization achieved by the human mind.”) Instead, what the anomalies of physics demonstrate is that there is no single test that can define the truth. Although we often pretend that experiments and peer-review and clinical trials settle the truth for us – that we are mere passive observers, dutifully recording the results – the actuality of science is a lot messier than that. Richard Rorty said it best: “To say that we should drop the idea of truth as out there waiting to be discovered is not to say that we have discovered that, out there, there is no truth.” Of course, the very fact that the facts aren’t obvious, that the truth isn’t “waiting to be discovered,” means that science is intensely human. It requires us to look, to search, to plead with nature for an answer.
Weiye Loh

The Dawn of Paid Search Without Keywords - Search Engine Watch (SEW) - 0 views

  • This year will fundamentally change how we think about and buy access to prospects, namely keywords. It is the dawn of paid search without keywords.
  • Google's search results were dominated by the "10 blue links" -- simple headlines, descriptions, and URLs to entice and satisfy searchers. Until it wasn't. Universal search wove in images, video, and real-time updates.
  • For most of its history, too, AdWords been presented in a text format even as the search results morphed into a multimedia experience. The result is that attention was pulled towards organic results at the expense of ads.
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  • Google countered that trend with their big push for universal paid search in 2010. It was, perhaps, the most radical evolution to the paid search results since the introduction of Quality Score. Consider the changes:
  • New ad formats: Text is no longer the exclusive medium for advertising on Google. No format exemplifies that more than Product List Ads (and their cousin, Product Extensions). There is no headline, copy or display URL. Instead, it's just a product image, name, price and vendor slotted in the highest positions on the right side. What's more, you don't choose keywords. We also saw display creep into image search results with Image Search Ads and traditional display ads.
  • New calls-to-action: The way you satisfy your search with advertising on Google has evolved as well. Most notably, through the introduction of click-to-call as an option for mobile search ads (as well as the limited release AdWords call metrics). Similarly, more of the site experience is being pulled into the search results. The beta Comparison Ads creates a marketplace for loan and credit card comparison all on Google. The call to action is comparison and filtering, not just clicking on an ad.
  • New buying/monetization models: Cost-per-click (CPC) and cost-per-thousand-impressions (CPM) are no longer the only ways you can buy. Comparison Ads are sold on a cost-per-lead basis. Product listing ads are sold on a cost-per-acquisition (CPA) basis for some advertisers (CPC for most).
  • New display targeting options: Remarketing (a.k.a. retargeting) brought highly focused display buys to the AdWords interface. Specifically, the ability to only show display ads to segments of people who visit your site, in many cases after clicking on a text ad.
  • New advertising automation: In a move that radically simplifies advertising for small businesses, Google began testing Google Boost. It involves no keyword research and no bidding. If you have a Google Places page, you can even do it without a website. It's virtually hands-off advertising for SMBs.
  • Of those changes, Google Product Listing Ads and Google Boost offer the best glimpse into the future of paid search without keywords. They're notable for dramatic departures in every step of how you advertise on Google: Targeting: Automated targeting toward certain audiences as determined by Google vs. keywords chosen by the advertiser. Ads: Product listing ads bring a product search like result in the top position in the right column and Boost promotes a map-like result in a preferred position above organic results. Pricing: CPA and monthly budget caps replace daily budgets and CPC bids.
  • For Google to continue their pace of growth, they need two things: Another line of business to complement AdWords, and display advertising is it. They've pushed even more aggressively into the channel, most notably with the acquisition of Invite Media, a demand side platform. To remove obstacles to profit and incremental growth within AdWords. These barriers are primarily how wide advertisers target and how much they pay for the people they reach (see: "Why Google Wants to Eliminate Bidding In Exchange for Your Profits").
Weiye Loh

Early microscopes offered sharp vision : Nature News - 0 views

  • Inept modern reconstructions have given seventeenth-century instruments a bad name, says Ford. In contrast to the hazy images shown in some museums and television documentaries, the right lighting and focusing can produce micrographs of startling clarity using original microscopes or modern replicas ( see slideshow ).
  • A flea, as seen through an eighteenth-century microscope used poorly (left) and correctly (right).
Weiye Loh

Google Adds Voice Search, Visual Search and Results Prerendering - 0 views

  • Google Goggles is a full-fledged visual search engine that's trapped in a mobile application. But why do you have to buy a smartphone to use Google Goggles when you could simply upload an image to Google and find related pages and images on the Web? "Search by Image" does more than TinEye, the "reverse image search engine" that lets you find an image on the Web.
Weiye Loh

Letter from China: China and the Unofficial Truth : The New Yorker - 0 views

  • Chinese citizens are busy dissecting and taunting the meeting on social media. While Premier Wen Jiabao was pledging that the government would “quickly” reverse the widening gap between rich and poor—last year he said it would do so “gradually”—Chinese Web users were scrutinizing photos of delegates arriving for the meeting, and posting photos of their nine-hundred dollar Hermès belts and Birkin and Celine and Louis Vuitton purses that retail for car prices. As Danwei points out, an image that has been making the rounds with particular relish shows the C.E.O. of China Power International Development Ltd, Li Xiaolin, in a salmon-colored suit from Emilio Pucci’s spring-summer 2012 collection—price: nearly two thousand dollars. Web user Cairangduoji paired her photo with the image of dirt-covered barefoot kids in the countryside and the comment: “That amount could help two hundred children wear warm clothes, and avoid the chilly attacks of winter.” And it appended a quote from Li, of the salmon suit, who purportedly once said, “I think we should open a morality file on all citizens to control everyone and give them a ‘sense of shame.’” (This is no ordinary delegate: Li Xiaolin happens to be the daughter of former Premier Li Peng, who oversaw the crackdown at Tiananmen Square.)
  • Another message making the rounds uses an official high-res photo of the gathering to zoom in on delegates who were captured fast asleep or typing on their smart phones.
Weiye Loh

Connecticut Law Tribune: Child Porn Decision Turns On Downloading Intent - 0 views

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    Generally speaking, when you go to a web site, images are downloaded to temporary storage on your computer - whether it's a personal computer, pad, laptop or certain smartphones. This temporary storage is called "cache." The pictures and video are temporarily stored to make it easier for your computer to display those images from the web site if you go back. It makes the processing time faster. This is an automatic process conducted by your computer's operating system. Yes, that means you or a client can accidentally access child pornography unknowingly. There may be pictures or videos that depict child pornography that you haven't viewed that get automatically downloaded and stored in temporary Internet storage or cache. Yes, that means that even if you or a client accidentally access child pornography and try to delete it, if the police find out about it, they will make an arrest, push to prosecute and the resultant conviction will garner a mandatory minimum sentence of incarceration.
Weiye Loh

Roger Pielke Jr.'s Blog: The Fall of Karl-Theodor zu Guttenberg - 0 views

  • The German defense minister, Karl-Theodor zu Guttenberg, has resigned following the exposure of plagiarism on a massive scale in his PhD dissertation.  The figure above shows the results of a page-by-page Wiki effort to "audit" his dissertation.  The black and red colors indicate text that was directly (black) or partially (red) copied from other sources.  The white parts were judged OK and the blue represents the front and back matter.
  • Guttenberg's defense of his actions, which were supported by Chancellor Angela Merkel, sought to focus attention on those critiquing him in an effort to downplay the significance of the academic misconduct
  • But in the end, it appears that the presures brought to bear from Germany's substantial academic community made continuation for Guttenberg impossible
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  • Even so, I expect that we will again see Karl-Theodor zu Guttenberg in German politics, and Germany will then re-engage a debate over science, politics, trust and legitimacy
Weiye Loh

homunculus: I can see clearly now - 0 views

  • Here’s a little piece I wrote for Nature news. To truly appreciate this stuff you need to take a look at the slideshow. There will be a great deal more on early microscopy in my next book, probably called Curiosity and scheduled for next year.
  • The first microscopes were a lot better than they are given credit for. That’s the claim of microscopist Brian Ford, based at Cambridge University and a specialist in the history and development of these instruments.
  • Ford says it is often suggested that the microscopes used by the earliest pioneers in the seventeenth century, such as Robert Hooke and Antony van Leeuwenhoek, gave only very blurred images of structures such as cells and micro-organisms. Hooke was the first to record cells, seen in thin slices of cork, while Leeuwenhoek described tiny ‘animalcules’, invisible to the naked eye, in rain water in 1676. The implication is that these breakthroughs in microscopic biology involved more than a little guesswork and invention. But Ford has looked again at the capabilities of some of Leeuwenhoek’s microscopes, and says ‘the results were breathtaking’. ‘The images were comparable with those you would obtain from a modern light microscope’, he adds in an account of his experiments in Microscopy and Analysis [1].
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  • The poor impression of the seventeenth-century instruments, says Ford, is due to bad technique in modern reconstructions. In contrast to the hazy images shown in some museums and television documentaries, careful attention to such factors as lighting can produce micrographs of startling clarity using original microscopes or modern replicas.
  • Ford was able to make some of these improvements when he was granted access to one of Leeuwenhoek’s original microscopes owned by the Utrecht University Museum in the Netherlands. Leeuwenhoek made his own instruments, which had only a single lens made from a tiny bead of glass mounted in a metal frame. These simple microscopes were harder to make and to use than the more familiar two-lens compound microscope, but offered greater resolution.
  • Hooke popularized microscopy in his 1665 masterpiece Micrographia, which included stunning engravings of fleas, mites and the compound eyes of flies. The diarist Samuel Pepys judged it ‘the most ingenious book that I ever read in my life’. Ford’s findings show that Hooke was not, as some have imagined, embellishing his drawings from imagination, but should genuinely have been able to see such things as the tiny hairs on the flea’s legs.
  • Even Hooke was temporarily foxed, however, when he was given the duty of reproducing the results described by Leeuwenhoek, a linen merchant of Delft, in a letter to the Royal Society. It took him over a year before he could see these animalcules, whereupon he wrote that ‘I was very much surprised at this so wonderful a spectacle, having never seen any living creature comparable to these for smallness.’ ‘The abilities of those pioneer microscopists were so much greater than has been recognized’ says Ford. He attributes this misconception to the fact that ‘no longer is microscopy properly taught.’
  • Reference1. Ford, B. J. Microsc. Anal. March 2011 (in press).
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    The first microscopes were a lot better than they are given credit for.
Weiye Loh

World Bank Institute: We're also the data bank - video | Media | guardian.co.uk - 0 views

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    Aleem Walji, practice manager for innovation at the World Bank Institute, which assists and advises policy makers and NGOs, tells the Guardian's Activate summit in London about the organisation's commitment to open data
Weiye Loh

BBC News - Fallen soldiers: Is it right to take images of bodies? - 0 views

  • It now appears that, in Belgium, it's acceptable to film the dead from Waterloo but not from WWI.
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    "Fallen soldiers: Is it right to take images of bodies?"
Weiye Loh

Facial Recognition Software Singles Out Innocent Man | The Utopianist - Think Bigger - 0 views

  • Gass was at home when he got a letter from the Massachusetts Registry of Motor Vehicles saying his license had been revoked. Why? The Boston Globe explains: An antiterrorism computerized facial recognition system that scans a database of millions of state driver’s license images had picked his as a possible fraud. It turned out Gass was flagged because he looks like another driver, not because his image was being used to create a fake identity. His driving privileges were returned but, he alleges in a lawsuit, only after 10 days of bureaucratic wrangling to prove he is who he says he is.
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    While a boon to police departments looking to save time and money fighting identity fraud, it's frightening to think that people are having their lives seriously disrupted thanks to computer errors. If you are, say, a truck driver, something like this could cause you weeks of lost pay, something many Americans just can't afford to do. And what if this technology expands beyond just rooting out identity fraud? What if you were slammed against a car hood as police falsely identified you as a criminal? The fact that Hass didn't even have a chance to fight the computer's findings before his license was suspended is especially disturbing. What would you do if this happened to you?
Jiamin Lin

Air travellers on 'naked' scanners - 3 views

http://news.bbc.co.uk/2/hi/uk_news/8303982.stm Latest security scanner that produces "naked" image of air travelers is now being tested at Manchester Airport. Air travelers no longer have to rem...

privacy security

started by Jiamin Lin on 14 Oct 09 no follow-up yet
Weiye Loh

More Than 1 Billion People Are Hungry in the World - By Abhijit Banerjee and Esther Duf... - 0 views

  • We were starting to feel very bad for him and his family, when we noticed the TV and other high-tech gadgets. Why had he bought all these things if he felt the family did not have enough to eat? He laughed, and said, "Oh, but television is more important than food!"
  • For many in the West, poverty is almost synonymous with hunger. Indeed, the announcement by the United Nations Food and Agriculture Organization in 2009 that more than 1 billion people are suffering from hunger grabbed headlines in a way that any number of World Bank estimates of how many poor people live on less than a dollar a day never did. COMMENTS (7) SHARE: Twitter   Reddit   Buzz   More... But is it really true? Are there really more than a billion people going to bed hungry each night?
  • unfortunately, this is not always the world as the experts view it. All too many of them still promote sweeping, ideological solutions to problems that defy one-size-fits-all answers, arguing over foreign aid, for example, while the facts on the ground bear little resemblance to the fierce policy battles they wage.
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  • Jeffrey Sachs, an advisor to the United Nations and director of Columbia University's Earth Institute, is one such expert. In books and countless speeches and television appearances, he has argued that poor countries are poor because they are hot, infertile, malaria-infested, and often landlocked; these factors, however, make it hard for them to be productive without an initial large investment to help them deal with such endemic problems. But they cannot pay for the investments precisely because they are poor -- they are in what economists call a "poverty trap." Until something is done about these problems, neither free markets nor democracy will do very much for them.
  • But then there are others, equally vocal, who believe that all of Sachs's answers are wrong. William Easterly, who battles Sachs from New York University at the other end of Manhattan, has become one of the most influential aid critics in his books, The Elusive Quest for Growth and The White Man's Burden. Dambisa Moyo, an economist who worked at Goldman Sachs and the World Bank, has joined her voice to Easterly's with her recent book, Dead Aid. Both argue that aid does more bad than good. It prevents people from searching for their own solutions, while corrupting and undermining local institutions and creating a self-perpetuating lobby of aid agencies.
  • The best bet for poor countries, they argue, is to rely on one simple idea: When markets are free and the incentives are right, people can find ways to solve their problems. They do not need handouts from foreigners or their own governments.
  • According to Easterly, there is no such thing as a poverty trap.
  • To find out whether there are in fact poverty traps, and, if so, where they are and how to help the poor get out of them, we need to better understand the concrete problems they face. Some aid programs help more than others, but which ones? Finding out required us to step out of the office and look more carefully at the world. In 2003, we founded what became the Abdul Latif Jameel Poverty Action Lab, or J-PAL. A key part of our mission is to research by using randomized control trials -- similar to experiments used in medicine to test the effectiveness of a drug -- to understand what works and what doesn't in the real-world fight against poverty. In practical terms, that meant we'd have to start understanding how the poor really live their lives.
  • Take, for example, Pak Solhin, who lives in a small village in West Java, Indonesia. He once explained to us exactly how a poverty trap worked. His parents used to have a bit of land, but they also had 13 children and had to build so many houses for each of them and their families that there was no land left for cultivation. Pak Solhin had been working as a casual agricultural worker, which paid up to 10,000 rupiah per day (about $2) for work in the fields. A recent hike in fertilizer and fuel prices, however, had forced farmers to economize. The local farmers decided not to cut wages, Pak Solhin told us, but to stop hiring workers instead. As a result, in the two months before we met him in 2008, he had not found a single day of agricultural labor. He was too weak for the most physical work, too inexperienced for more skilled labor, and, at 40, too old to be an apprentice. No one would hire him.
  • Pak Solhin, his wife, and their three children took drastic steps to survive. His wife left for Jakarta, some 80 miles away, where she found a job as a maid. But she did not earn enough to feed the children. The oldest son, a good student, dropped out of school at 12 and started as an apprentice on a construction site. The two younger children were sent to live with their grandparents. Pak Solhin himself survived on the roughly 9 pounds of subsidized rice he got every week from the government and on fish he caught at a nearby lake. His brother fed him once in a while. In the week before we last spoke with him, he had eaten two meals a day for four days, and just one for the other three.
  • Pak Solhin appeared to be out of options, and he clearly attributed his problem to a lack of food. As he saw it, farmers weren't interested in hiring him because they feared they couldn't pay him enough to avoid starvation; and if he was starving, he would be useless in the field. What he described was the classic nutrition-based poverty trap, as it is known in the academic world. The idea is simple: The human body needs a certain number of calories just to survive. So when someone is very poor, all the food he or she can afford is barely enough to allow for going through the motions of living and earning the meager income used to buy that food. But as people get richer, they can buy more food and that extra food goes into building strength, allowing people to produce much more than they need to eat merely to stay alive. This creates a link between income today and income tomorrow: The very poor earn less than they need to be able to do significant work, but those who have enough to eat can work even more. There's the poverty trap: The poor get poorer, and the rich get richer and eat even better, and get stronger and even richer, and the gap keeps increasing.
  • But though Pak Solhin's explanation of how someone might get trapped in starvation was perfectly logical, there was something vaguely troubling about his narrative. We met him not in war-infested Sudan or in a flooded area of Bangladesh, but in a village in prosperous Java, where, even after the increase in food prices in 2007 and 2008, there was clearly plenty of food available and a basic meal did not cost much. He was still eating enough to survive; why wouldn't someone be willing to offer him the extra bit of nutrition that would make him productive in return for a full day's work? More generally, although a hunger-based poverty trap is certainly a logical possibility, is it really relevant for most poor people today? What's the best way, if any, for the world to help?
Weiye Loh

Newspaper Uses Photoshop To Dramatise Violence In Syria | Gizmodo Australia - 0 views

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    The Kronen Zeitung is Austria's largest newspaper, with a daily readership of around three million people. Yesterday, those readers were treated to the image on the left of war-torn Aleppo, bombed out and desperate - but that wasn't the scene at all. As one sharp-eyed Redditor points out, it was just another Photoshop job.
Weiye Loh

Red-Wine Researcher Charged With 'Photoshop' Fraud - 0 views

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    A University of Connecticut researcher known for touting the health benefits of red wine is guilty of 145 counts of fabricating and falsifying data with image-editing software, according to a 3-year university investigation made public Wednesday. The researcher, Dipak K. Das, PhD, is a director of the university's Cardiovascular Research Center (CRC) and a professor in the Department of Surgery. The university stated in a press release that it has frozen all externally funded research in Dr. Das's lab and turned down $890,000 in federal research grants awarded to him. The process to dismiss Dr. Das from the university is already underway, the university added.
Weiye Loh

Truthy - 0 views

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    Truthy is a research project that helps you understand how memes spread online. We collect tweets from Twitter and analyze them. With our statistics, images, movies, and interactive data, you can explore these dynamic networks. Our first application was the study of astroturf campaigns in elections. Currently, we're extending our focus to several themes. Browse the collection on the Memes page. Check out the Movie tool to browse and create animations of meme networks.
Weiye Loh

Skepticblog » Why are textbooks so expensive? - 0 views

  • As an author, I’ve seen how the sales histories of textbooks work. Typically they have a big spike of sales for the first 1-2 years after they are introduced, and that’s when most the new copies are sold and most of the publisher’s money is made. But by year 3  (and sometimes sooner), the sales plunge and within another year or two, the sales are miniscule. The publishers have only a few options in a situation like this. One option: they can price the book so that the first two years’ worth of sales will pay their costs back before the used copies wipe out their market, which is the major reason new copies cost so much. Another option (especially with high-volume introductory textbooks) is to revise it within 2-3 years after the previous edition, so the new edition will drive all the used copies off the shelves for another two years or so. This is also a common strategy. For my most popular books, the publisher expected me to be working on a new edition almost as soon as the previous edition came out, and 2-3 years later, the new edition (with a distinctive new cover, and sometimes with significant new content as well) starts the sales curve cycle all over again. One of my books is in its eighth edition, but there are introductory textbooks that are in the 15th or 20th edition.
  • For over 20 years now, I’ve heard all sorts of prophets saying that paper textbooks are dead, and predicting that all textbooks would be electronic within a few years. Year after year, I  hear this prediction—and paper textbooks continue to sell just fine, thank you.  Certainly, electronic editions of mass market best-sellers, novels and mysteries (usually cheaply produced with few illustrations) seem to do fine as Kindle editions or eBooks, and that market is well established. But electronic textbooks have never taken off, at least in science textbooks, despite numerous attempts to make them work. Watching students study, I have a few thoughts as to why this is: Students seem to feel that they haven’t “studied” unless they’ve covered their textbook with yellow highlighter markings. Although there are electronic equivalents of the highlighter marker pen, most of today’s students seem to prefer physically marking on a real paper book. Textbooks (especially science books) are heavy with color photographs and other images that don’t often look good on a tiny screen, don’t print out on ordinary paper well, but raise the price of the book. Even an eBook is going to be a lot more expensive with lots of images compared to a mass-market book with no art whatsoever. I’ve watched my students study, and they like the flexibility of being able to use their book just about anywhere—in bright light outdoors away from a power supply especially. Although eBooks are getting better, most still have screens that are hard to read in bright light, and eventually their battery will run out, whether you’re near a power supply or not. Finally, if  you drop your eBook or get it wet, you have a disaster. A textbook won’t even be dented by hard usage, and unless it’s totally soaked and cannot be dried, it does a lot better when wet than any electronic book.
  • A recent study found that digital textbooks were no panacea after all. Only one-third of the students said they were comfortable reading e-textbooks, and three-fourths preferred a paper textbook to an e-textbook if the costs were equal. And the costs have hidden jokers in the deck: e-textbooks may seem cheaper, but they tend to have built-in expiration dates and cannot be resold, so they may be priced below paper textbooks but end up costing about the same. E-textbooks are not that much cheaper for publishers, either, since the writing, editing, art manuscript, promotion, etc., all cost the publisher the same whether the final book is in paper or electronic. The only cost difference is printing and binding and shipping and storage vs. creating the electronic version.
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    But in the 1980s and 1990s, the market changed drastically with the expansion of used book recyclers. They set up shop at the bookstore door near the end of the semester and bought students' new copies for pennies on the dollar. They would show up in my office uninvited and ask if I want to sell any of the free adopter's copies that I get from publishers trying to entice me. If you walk through any campus bookstore, nearly all the new copies have been replaced by used copies, usually very tattered and with broken spines. The students naturally gravitate to the cheaper used books (and some prefer them because they like it if a previous owner has highlighted the important stuff). In many bookstores, there are no new copies at all, or just a few that go unsold. What these bargain hunters don't realize is that every used copy purchased means a new copy unsold. Used copies pay nothing to the publisher (or the author, either), so to recoup their costs, publishers must price their new copies to offset the loss of sales by used copies. And so the vicious circle begins-publisher raises the price on the book again, more students buy used copies, so a new copy keeps climbing in price.
Paul Melissa

Hey, did you hear about S'pore 'Gossip Girl' sites? - JULY 24, 2009 - 0 views

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    This case occurred recently this year. Following a popular TV series 'Gossip Girl', a group of senior students from Ngee Ann Polytechnic targeted Year One students from the School of Film and Media Studies (FMS). Blogs were created to defame the students by sparking off online rumors about them. The blog postings affected friendships as students became very suspicious of each other and started pointing fingers. The image of FMS was also affected especially when read by people outside the school. Though the blogs have been shut down, they have generated over 18000 hits. It is still uncertain who set up the blogs. Ethical Question: With regards to freedom of speech, is there an imaginary ethical line in cyberspace which when over-stepped, must lead to punishment? Who decides when or how this line is being over-stepped? What and how severed should the consequences be? This is because the culprits we practicing free speech but there was a price their victims had to pay. In this case, according to teleological theories, there is neither utilitarianism nor ethical altruism.
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