Vital Signs: Limits to Resveratrol as a Metabolism Aid

Resveratrol, the red wine component shown to be helpful in improving metabolic function in obese or diabetic people, has no discernible effect on healthy women who are not obese, a new experiment has found.

In a small 12-week randomized, double-blinded trial, researchers gave 29 normal weight postmenopausal women either 75 milligrams a day of resveratrol or a placebo, testing their metabolic function at the start and end of the study.

Blood concentrations of resveratrol increased in the group given the supplements, but the scientists found no difference between them and those given the placebo in body composition, resting metabolic rate or glucose tolerance (a test for insulin resistance and diabetes).

The study, to be published in this week’s issue of the journal Cell Metabolism, found that blood pressure, heart rate, C-reactive protein levels (a measure of inflammation), LDL, HDL and total cholesterol were unaffected by resveratrol. In other words, resveratrol blood concentrations were associated with no quantifiable changes, beneficial or otherwise, in any measure of metabolic function.

Does this mean that resveratrol offers no benefits? Not necessarily, said the senior author, Dr. Samuel Klein, a professor of medicine at Washington University in St. Louis. “We only show that metabolically healthy people get no benefits to begin with,” he said. “We have no way of knowing whether it will prevent future metabolic complications.”

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Vital Signs: Limits to Resveratrol as a Metabolism Aid

Resveratrol, the red wine component shown to be helpful in improving metabolic function in obese or diabetic people, has no discernible effect on healthy women who are not obese, a new experiment has found.

In a small 12-week randomized, double-blinded trial, researchers gave 29 normal weight postmenopausal women either 75 milligrams a day of resveratrol or a placebo, testing their metabolic function at the start and end of the study.

Blood concentrations of resveratrol increased in the group given the supplements, but the scientists found no difference between them and those given the placebo in body composition, resting metabolic rate or glucose tolerance (a test for insulin resistance and diabetes).

The study, to be published in this week’s issue of the journal Cell Metabolism, found that blood pressure, heart rate, C-reactive protein levels (a measure of inflammation), LDL, HDL and total cholesterol were unaffected by resveratrol. In other words, resveratrol blood concentrations were associated with no quantifiable changes, beneficial or otherwise, in any measure of metabolic function.

Does this mean that resveratrol offers no benefits? Not necessarily, said the senior author, Dr. Samuel Klein, a professor of medicine at Washington University in St. Louis. “We only show that metabolically healthy people get no benefits to begin with,” he said. “We have no way of knowing whether it will prevent future metabolic complications.”

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South Carolina Tax Hacking Puts Other States on Alert





The theft of tax information from a South Carolina computer system appears to have been the largest cyberattack ever on a state government and has put other states on high alert, computer security experts say.




The state announced late last month that an international hacker had stolen 3.6 million Social Security numbers and 387,000 credit and debit card numbers. Now tax departments across the country are inspecting their own security systems.


“When one employee’s laptop gets stolen, it’s a big deal,” said Verenda Smith, the deputy director of the National Federation of Tax Administrators. “So you can imagine the reverberations when this news came out.”


Since 2005, at least 11 state tax agencies have faced security breaches, according to the Privacy Rights Clearinghouse, a consumer rights group. But most were caused by internal accidents, not attacks, and none were on this scale.


“As a cyberattack, this appears to be in a league of its own,” said Beth Givens, the group’s director.


The hacking has raised questions about whether South Carolina was unprotected or simply unlucky. Most of the stolen credit cards were encrypted, but the Social Security numbers were not. The computer system that was hacked did not have a free layer of security monitoring offered to all South Carolina agencies, according to the State Budget and Control Board.


In a lawsuit filed last Wednesday, a former state senator, John Hawkins, said the state had failed to protect taxpayers and had not reported the attack promptly. The tax agency detected the attack on Oct. 10 and, after notifying federal authorities, alerted the public on Oct. 26.


“Obviously these hackers picked South Carolina because it was vulnerable,” Mr. Hawkins said. “I equate it to a burglar going into a neighborhood. He’s going to break into the house with no alarms and the door open.”


But South Carolina is hardly the first state to suffer a large-scale security breach. In Texas last year, Social Security records for 3.5 million people were inadvertently disclosed to the public on a computer server.


In Georgia in 2007, a computer disk containing personal information on 2.9 million people disappeared. At the federal Veterans Affairs Department in 2006, an employee lost a laptop and an external hard drive containing the Social Security records of 26.5 million active-duty troops and veterans.


Gov. Nikki R. Haley said that South Carolina had a state-of-the-art security system but that the hacker nevertheless found a way around it. Her office said on Friday that it was encrypting all tax files to reduce the harm if any were stolen, and that the process would be completed within 90 days. The state is paying up to $12 million to provide a free year of credit monitoring and identity theft prevention to anyone affected.


Last Wednesday, the state disclosed that tax records for 657,000 businesses had also been hacked.


Anyone who has filed a tax return since 1998 has been urged to contact state law enforcement officials. By last Thursday, 653,000 people had called the state’s emergency hot line, and 521,000 had signed up for identity protection.


Within state governments, tax agencies face the highest risk for hacking, said Larry Ponemon, the founder of a security research firm, the Ponemon Institute. If stolen, their data can be used for tax fraud, credit card fraud and identity theft.


“This is the crown jewel for a cyberattacker: having the Social Security numbers, personal information and credit card for the same person,” he said.


After the attack, state tax agencies, including in California, said they were monitoring their security particularly closely.


Michael Hicks, the director of the Maryland Cybersecurity Center at the University of Maryland, said states needed a clearer understanding of the attack in South Carolina.


“The only way states can raise the level of vigilance,” Mr. Hicks said, “is if they really get to the bottom of what really happened in this attack.”


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Egyptian Vigilantes Crack Down on Abuse of Women


Tara Todras-Whitehill for The New York Times


A self-appointed citizens patrol that tries to protect women on Cairo’s streets spray-painted a youth for identification last month.







CAIRO — The young activists lingered on the streets around Tahrir Square, scrutinizing the crowds of holiday revelers. Suddenly, they charged, pushing people aside and chasing down a young man. As the captive thrashed to get away, the activists pounded his shoulders, flipped him around and spray-painted a message on his back: “I’m a harasser.”




Egypt’s streets have long been a perilous place for women, who are frequently heckled, grabbed, threatened and violated while the police look the other way. Now, during the country’s tumultuous transition from authoritarian rule, more and more groups are emerging to make protecting women — and shaming the do-nothing police — a cause.


“They’re now doing the undoable?” a police officer joked as he watched the vigilantes chase down the young man. The officer quickly went back to sipping his tea.


The attacks on women did not subside after the uprising. If anything, they became more visible as even the military was implicated in the assaults, stripping female protesters, threatening others with violence and subjecting activists to so-called virginity tests. During holidays, when Cairenes take to the streets to stroll and socialize, the attacks multiply.


But during the recent Id al-Adha holiday, some of the men were surprised to find they could no longer harass with impunity, a change brought about not just out of concern for women’s rights, but out of a frustration that the post-revolutionary government still, like the one before, was doing too little to protect its citizens.


At least three citizens groups patrolled busy sections of central Cairo during the holiday. The groups’ members, both men and women, shared the conviction that the authorities would not act against harassment unless the problem was forced into the public debate. They differed in their tactics: some activists criticized others for being too quick to resort to violence against suspects and encouraging vigilantism.  One group leader compared the activists to the Guardian Angels in the United States.


“The harasser doesn’t see anyone who will hold him accountable,” said Omar Talaat, 16, who joined one of the patrols.


The years of President Hosni Mubarak’s rule were marked by official apathy, collusion in the assaults on women, or empty responses to the attacks, including police roundups of teenagers at Internet cafes for looking at pornography.


“The police did not take harassment seriously,” said Madiha el-Safty, a sociology professor at the American University in Cairo. “People didn’t file complaints. It was always underreported.”


Mr. Mubarak’s wife, Suzanne, who portrayed herself as a champion of women’s rights, pretended the problem hardly existed. As reports of harassment grew in 2008, she said, “Egyptian men always respect Egyptian women.”


Egypt’s new president, Mohamed Morsi, has presided over two holidays, and many activists say there is no sign that the government is paying closer attention to the problem. But the work by the citizens groups may be having an effect: Last week, after the Id al-Adha holiday, Mr. Morsi’s spokesman announced that the government had received more than 1,000 reports of harassment, and said that the president had directed the Interior Ministry to investigate them.


“Egypt’s revolution cannot tolerate these abuses,” the spokesman quoted Mr. Morsi as saying.


Azza Soliman, the director of the Center for Egyptian Women’s Legal Assistance, dismissed the president’s words as “weak.” During the holiday, she said, one of her sons was beaten on the subway after he tried to stop a man who was groping two foreign women. The police tried to stop him from filing a complaint. “The whole world is talking about harassment in our country,” Ms. Soliman said. “The Interior Ministry takes no action.”


For years, anti-harassment activists have worked to highlight the problems in Egypt, but the uprising seemed to give the effort more energy and urgency.


Asmaa Al Zohairy contributed reporting.



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A Media Vow of Election Night Restraint Despite Social Media Clamor





This has been the year of the big media gaffe.




NBC News edited a 911 tape of George Zimmerman in a way that implied race as a factor in the Trayvon Martin shooting. CNN and Fox News falsely reported that the Supreme Court had struck down the individual mandate at the heart of the Obama administration’s health care law. ABC News wrongly suggested a link between a mass shooting in Colorado and the Tea Party. Just last week during the storm, CNN repeated a false rumor about flooding at the New York Stock Exchange.


Now the media are gearing up for election night, the finale of the year’s biggest story. It’s a chance to regain some credibility — presuming, of course, that television networks and other news organizations get their state-by-state projections right. They all say they will, still mindful of the mistakes made in 2000, when the networks prematurely called Florida for Al Gore and then George W. Bush.


The same precautions that were put in place after 2000 will be in place again this Tuesday. At NBC, for instance, the statisticians at the “decision desk” that makes projections “are literally sealed off from the rest of us,” said Mark Lukasiewicz, the senior vice president of specials for NBC News.


Different this time will be the level of noise on the Web, where armchair and professional pundits alike will react to the election results in real time. On election night in 2008, a few Web sites, including Slate and Time.com, stated the obvious — that Barack Obama was going to win the presidency — well before the TV networks and major newspapers said so. In large part that’s because the networks and newspapers were waiting for the polls to close on the West Coast.


They will abide by the same principle again on Tuesday night, ruling out any such pronouncement before 11 p.m. Eastern. But more Web sites and individual users will most likely try to call the race early, creating a cacophony on social networking sites like Facebook and Twitter.


A memo on Saturday to employees of The Associated Press, the country’s biggest news wire service, asked them to refrain from adding to the noise by posting to Twitter about other news outlets’ calls. “If A.P. has not called a particular state or race, it’s because we have specifically decided not to, based on the expertise and data we have spent years developing,” the memo read.


In calling a state for Mr. Obama or Mitt Romney, news organizations will consider several data sources, including exit poll results and raw vote totals — “a brain trust of data,” said Ingrid Ciprian-Matthews, the vice president for news for CBS News.


Executives at the major networks said in interviews that they don’t expect to be able to project a winner at 11 p.m. this year, given the closeness of the presidential race in several swing states. “I’m not even going to guess what time it will be,” said Marc Burstein, the senior executive producer for special events at ABC News. He predicted an abundance of caution this year because of the trend of early voting in many states.


For election night ABC is uniquely situated in Times Square, which filled up with supporters of Mr. Obama on election night in 2008. This time, too, “I expect a gigantic crowd,” Mr. Burstein said. NBC is expecting the same at Rockefeller Plaza, which it has re-christened Democracy Plaza with exhibits and video screens, just as it did in 2004 and 2008.


All of the executives interviewed said they would be entirely comfortable making projections after their competitors. “In a close contest, we’ll simply wait,” said Sam Feist, the Washington bureau chief for CNN. And all of them cited the journalism chestnut that it’s better to be right than first. “It’s always lovely when the two coincide,” said Ms. Ciprian-Matthews of CBS, “but everybody here is absolutely on the same page: accuracy comes first.”


Fox News did not respond to an interview request.


CNN, which was criticized for crowding its studio with anchors and analysts in 2008, will have more reporters in the field this time, including a half-dozen in Ohio alone. Reprising what it called “ballot cams” on primary nights, CNN will have crews at “key voting and vote-counting locations” in battleground states, Mr. Feist said.


“We proved during the primaries that doing real reporting on those nights can make a difference,” he said.


No matter the outcome, some partisans will claim that the election is illegitimate, if the election year rhetoric is to be believed. Continuing an effort that started in 2004, networks and other news outlets will ask the public to alert them to voter irregularities and allegations of voter suppression. “We have an entire team working on those stories,” Mr. Lukasiewicz of NBC said.


Dozens of news and opinion Web sites will offer essentially live coverage on election night, some with TV-like newscasts and others with live blogs. But the biggest audiences are still expected to tune to the big three broadcast networks, ABC, CBS and NBC, and the big three cable news networks, Fox News, MSNBC and CNN.


Four years ago, Brian Williams was the anchor on NBC, Charles Gibson on ABC and Katie Couric on CBS. Mr. Williams is back for his second presidential election night as anchor, but Mr. Gibson, who retired three years ago, will not; heading the coverage instead will be the pair that sat alongside him in 2008, Diane Sawyer and George Stephanopoulos. Ms. Couric, now of ABC, will join them from time to time with social media reaction — a role that did not exist on the network’s coverage last time.


On CBS, Scott Pelley will anchor his first presidential election night. It’s also the first time for Rachel Maddow, on MSNBC, and Bret Baier and Megyn Kelly, on Fox News. On PBS, Gwen Ifill and Judy Woodruff will make up national television’s first two-woman anchor team on election night.


Half a dozen smaller channels will also have hours of live election talk, as will countless local stations — paid for in part by the revenue from innumerable election ads. Discussing the extent of the coverage, Mr. Feist of CNN said, “You cannot find an available high-definition satellite path for Tuesday night in this country. There are none left. The country is at capacity.”


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A Wheelchair Tour of Morningside College in Sioux City, Iowa


Brian Lehmann for The New York Times


Alex Watters does a wheelie in a parking lot at his alma mater, Morningside College in Sioux City, Iowa. He damaged his spine in a diving accident freshman year. More Photos »







THE specially equipped Dodge Sprinter pulled into the Morningside College parking lot, transporting my campus guide and his Quickie 646 SE motorized wheelchair. Alex Watters was returning to this small liberal arts college in Sioux City, Iowa, for a wheelchair tour of the campus he had navigated as an undergraduate. Our mission was to understand some of the challenges faced by students with a physical disability for a book I was writing on the first-year college experience.








Brian Lehmann for The New York Times

A caregiver, Jennifer Mozak-Wubbena, helps Alex Watters prepare for the day. Mr. Watters can’t use his hands. More Photos »






I stuck my hand out. Alex could raise his arm but had no mobility in his hands, so I shook his outstretched fist. Freshman year, he had damaged his spinal cord in a diving accident and lost the use of his legs and hands. “Ready to go?” he asked as I grabbed my manually operated wheelchair, on loan from the nursing department.


“Ready as ever,” I said, not altogether sure how to operate the thing. As I struggled to get over the tiny ribbon of tar between the parking lot and sidewalk, Alex zipped around the lot doing wheelies, as if to say, “You have no idea what you’re in for.”


Motoring backward while talking, like an admissions office tour guide, he was contagiously optimistic. “Sure, I have challenges now,” he said, “but I’m not going to let them take over my life.”


ALEX WATTERS comes from Okoboji, a small town in the northwest corner of Iowa, on the border with Minnesota. He had applied to the University of Iowa and Drake but chose Morningside because he was heavily recruited to play golf. He had been captain of his high school team junior and senior years. When he arrived on campus — it was fall 2004 — he was full of excitement and expectation.


The second week there, Danielle Westphal — a classmate with whom he had won a dance contest during orientation — invited him to a family get-together on Lake Okoboji. He and a friend drove up to the cabin, arriving at about 10 p.m. As the guests toasted marshmallows around a bonfire, Alex and his hostess’s younger brother decided to go for a swim. The weather was beginning to get cold. He figured this would be his last swim of the season.


The two of them changed into their trunks and walked 150 feet out onto the dock. A gust of wind blew, and Alex’s hat flew off, landing near a boat hoist. He took off his shirt and dived in after it. But there was a sandbar. The water was only 18 inches deep. He heard his neck snap.


“I remember laying face-first underwater,” Alex said, a crack in his voice. “At first I tried to start swimming, but of course I couldn’t move. I thought, this was it. I’m a pretty religious person, so I was thinking, ‘I’m O.K. with this if it happens.’ And then I blacked out.”


At first the young boy thought Alex was playing a joke on him. Then he sensed something was terribly wrong. He ran back to the cabin to get help. They came running, and Danielle jumped into the water feetfirst and knelt beside Alex. He had now been under water more than two minutes. She turned him over and gave him mouth-to-mouth resuscitation. E.M.S. arrived, and from the local hospital he was quickly airlifted to Mercy Medical Center in Sioux City.


“Next thing I remember are Mom and Dad and our pastor standing by my bed and the surgeon telling them about the operation I would soon have,” he told me. His spinal cord wasn’t severed but pinched. “Your spinal cord is like a banana,” Alex said. “If you bend it severely enough it won’t necessarily break but it will be permanently damaged.”


After surgery to stabilize the vertebrae in his neck, Alex underwent therapy for six months at a rehabilitation hospital in Denver. I asked him what he was feeling at this point. He and his parents had become interested in stem cell research, and the possibility he would someday walk again. “But I really didn’t want to live my life hoping I would walk again when the chances were I might not,” he said. “Even at that point, I was pretty happy with who I was and even then I was thinking about the possibility of returning to college.”


He took courses at Iowa Lakes Community College that summer, and the next fall returned to Morningside to resume his first year.


Roger H. Martin is president emeritus of Randolph-Macon College and author of “Racing Odysseus: A College President Becomes a Freshman Again.”



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A Wheelchair Tour of Morningside College in Sioux City, Iowa


Brian Lehmann for The New York Times


Alex Watters does a wheelie in a parking lot at his alma mater, Morningside College in Sioux City, Iowa. He damaged his spine in a diving accident freshman year. More Photos »







THE specially equipped Dodge Sprinter pulled into the Morningside College parking lot, transporting my campus guide and his Quickie 646 SE motorized wheelchair. Alex Watters was returning to this small liberal arts college in Sioux City, Iowa, for a wheelchair tour of the campus he had navigated as an undergraduate. Our mission was to understand some of the challenges faced by students with a physical disability for a book I was writing on the first-year college experience.








Brian Lehmann for The New York Times

A caregiver, Jennifer Mozak-Wubbena, helps Alex Watters prepare for the day. Mr. Watters can’t use his hands. More Photos »






I stuck my hand out. Alex could raise his arm but had no mobility in his hands, so I shook his outstretched fist. Freshman year, he had damaged his spinal cord in a diving accident and lost the use of his legs and hands. “Ready to go?” he asked as I grabbed my manually operated wheelchair, on loan from the nursing department.


“Ready as ever,” I said, not altogether sure how to operate the thing. As I struggled to get over the tiny ribbon of tar between the parking lot and sidewalk, Alex zipped around the lot doing wheelies, as if to say, “You have no idea what you’re in for.”


Motoring backward while talking, like an admissions office tour guide, he was contagiously optimistic. “Sure, I have challenges now,” he said, “but I’m not going to let them take over my life.”


ALEX WATTERS comes from Okoboji, a small town in the northwest corner of Iowa, on the border with Minnesota. He had applied to the University of Iowa and Drake but chose Morningside because he was heavily recruited to play golf. He had been captain of his high school team junior and senior years. When he arrived on campus — it was fall 2004 — he was full of excitement and expectation.


The second week there, Danielle Westphal — a classmate with whom he had won a dance contest during orientation — invited him to a family get-together on Lake Okoboji. He and a friend drove up to the cabin, arriving at about 10 p.m. As the guests toasted marshmallows around a bonfire, Alex and his hostess’s younger brother decided to go for a swim. The weather was beginning to get cold. He figured this would be his last swim of the season.


The two of them changed into their trunks and walked 150 feet out onto the dock. A gust of wind blew, and Alex’s hat flew off, landing near a boat hoist. He took off his shirt and dived in after it. But there was a sandbar. The water was only 18 inches deep. He heard his neck snap.


“I remember laying face-first underwater,” Alex said, a crack in his voice. “At first I tried to start swimming, but of course I couldn’t move. I thought, this was it. I’m a pretty religious person, so I was thinking, ‘I’m O.K. with this if it happens.’ And then I blacked out.”


At first the young boy thought Alex was playing a joke on him. Then he sensed something was terribly wrong. He ran back to the cabin to get help. They came running, and Danielle jumped into the water feetfirst and knelt beside Alex. He had now been under water more than two minutes. She turned him over and gave him mouth-to-mouth resuscitation. E.M.S. arrived, and from the local hospital he was quickly airlifted to Mercy Medical Center in Sioux City.


“Next thing I remember are Mom and Dad and our pastor standing by my bed and the surgeon telling them about the operation I would soon have,” he told me. His spinal cord wasn’t severed but pinched. “Your spinal cord is like a banana,” Alex said. “If you bend it severely enough it won’t necessarily break but it will be permanently damaged.”


After surgery to stabilize the vertebrae in his neck, Alex underwent therapy for six months at a rehabilitation hospital in Denver. I asked him what he was feeling at this point. He and his parents had become interested in stem cell research, and the possibility he would someday walk again. “But I really didn’t want to live my life hoping I would walk again when the chances were I might not,” he said. “Even at that point, I was pretty happy with who I was and even then I was thinking about the possibility of returning to college.”


He took courses at Iowa Lakes Community College that summer, and the next fall returned to Morningside to resume his first year.


Roger H. Martin is president emeritus of Randolph-Macon College and author of “Racing Odysseus: A College President Becomes a Freshman Again.”



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Massive Open Online Courses Are Multiplying at a Rapid Pace


Clockwise, from top left: an online course in circuits and electronics with an M.I.T. professor (edX); statistics, Stanford (Udacity); machine learning, Stanford (Coursera); organic chemistry, University of Illinois, Urbana (Coursera).







IN late September, as workers applied joint compound to new office walls, hoodie-clad colleagues who had just met were working together on deadline. Film editors, code-writing interns and “edX fellows” — grad students and postdocs versed in online education — were translating videotaped lectures into MOOCs, or massive open online courses. As if anyone needed reminding, a row of aqua Post-its gave the dates the courses would “go live.”




The paint is barely dry, yet edX, the nonprofit start-up from Harvard and the Massachusetts Institute of Technology, has 370,000 students this fall in its first official courses. That’s nothing. Coursera, founded just last January, has reached more than 1.7 million — growing “faster than Facebook,” boasts Andrew Ng, on leave from Stanford to run his for-profit MOOC provider.


“This has caught all of us by surprise,” says David Stavens, who formed a company called Udacity with Sebastian Thrun and Michael Sokolsky after more than 150,000 signed up for Dr. Thrun’s “Introduction to Artificial Intelligence” last fall, starting the revolution that has higher education gasping. A year ago, he marvels, “we were three guys in Sebastian’s living room and now we have 40 employees full time.”


“I like to call this the year of disruption,” says Anant Agarwal, president of edX, “and the year is not over yet.”


MOOCs have been around for a few years as collaborative techie learning events, but this is the year everyone wants in. Elite universities are partnering with Coursera at a furious pace. It now offers courses from 33 of the biggest names in postsecondary education, including Princeton, Brown, Columbia and Duke. In September, Google unleashed a MOOC-building online tool, and Stanford unveiled Class2Go with two courses.


Nick McKeown is teaching one of them, on computer networking, with Philip Levis (the one with a shock of magenta hair in the introductory video). Dr. McKeown sums up the energy of this grand experiment when he gushes, “We’re both very excited.” Casually draped over auditorium seats, the professors also acknowledge that they are not exactly sure how this MOOC stuff works.


“We are just going to see how this goes over the next few weeks,” says Dr. McKeown.


WHAT IS A MOOC ANYWAY?


Traditional online courses charge tuition, carry credit and limit enrollment to a few dozen to ensure interaction with instructors. The MOOC, on the other hand, is usually free, credit-less and, well, massive.


Because anyone with an Internet connection can enroll, faculty can’t possibly respond to students individually. So the course design — how material is presented and the interactivity — counts for a lot. As do fellow students. Classmates may lean on one another in study groups organized in their towns, in online forums or, the prickly part, for grading work.


The evolving form knits together education, entertainment (think gaming) and social networking. Unlike its antecedent, open courseware — usually written materials or videotapes of lectures that make you feel as if you’re spying on a class from the back of the room — the MOOC is a full course made with you in mind.


The medium is still the lecture. Thanks to Khan Academy’s free archive of snappy instructional videos, MOOC makers have gotten the memo on the benefit of brevity: 8 to 12 minutes is typical. Then — this is key — videos pause perhaps twice for a quiz to make sure you understand the material or, in computer programming, to let you write code. Feedback is electronic. Teaching assistants may monitor discussion boards. There may be homework and a final exam.


The MOOC certainly presents challenges. Can learning be scaled up this much? Grading is imperfect, especially for nontechnical subjects. Cheating is a reality. “We found groups of 20 people in a course submitting identical homework,” says David Patterson, a professor at the University of California, Berkeley, who teaches software engineering, in a tone of disbelief at such blatant copying; Udacity and edX now offer proctored exams.


Some students are also ill prepared for the university-level work. And few stick with it. “Signing up for a class is a lightweight process,” says Dr. Ng. It might take just five minutes, assuming you spend two devising a stylish user name. Only 46,000 attempted the first assignment in Dr. Ng’s course on machine learning last fall. In the end, he says, 13,000 completed the class and earned a certificate — from him, not Stanford.


Laura Pappano is author of “Inside School Turnarounds” and writer in residence at the Wellesley Centers for Women.



This article has been revised to reflect the following correction:

Correction: November 4, 2012

An earlier version of this article, using information from Coursera, misidentified the source of a study of peer grading in a Princeton sociology MOOC. The study is by Mitchell Duneier, the course’s teacher, not Coursera. Also, the student work was regraded by Professor Duneier and his assistants, not by Princeton instructors. Results have not been released. Also, the article misspelled the surname of a Udacity co-founder. He is Michael Sokolsky, not Sokolosky.



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Syrian Rebels Claim to Kill Dozens of Soldiers


SANA, via Associated Press


An image released by Syria’s official news agency showed Damascus residents gathering at the scene of a blast on Monday.







BEIRUT, Lebanon — Syria was convulsed by one of the most violent days in months on Monday, with heavy fighting reported around Palestinian neighborhoods in southern Damascus, at least two car-bomb explosions and strikes by government aircraft on numerous rebel targets.




Sharply conflicting accounts emerged from the government and the rebels on the toll from a car bombing near the central city of Hama, with the rebels reporting dozens of soldiers dead and the government saying just two civilians were killed.


The Syrian Observatory for Human Rights, a group based in Britain with a network of contacts inside Syria, said that Jabhet al-Nusra, a jihadist organization, and other rebel groups in the region collaborated in a suicide car bombing of a government checkpoint in a village near Hama, killing at least 50 soldiers.


“They targeted one of the biggest checkpoints in the region. It’s a big building where the regime forces were headquartered,” said Ahmad Raadoun, a member of the Free Syrian Army in the Hama suburbs, who was reached via Skype.


Mr. Raadoun, who said he was about 20 miles from the village of Ziyara, where the attack took place, said the bomb caused extensive casualties and other damage in what he described as a “big operation.”


The official news agency, SANA, said the explosion, outside a government building called the Rural Development Center, was orchestrated by terrorist groups and left 2 civilians dead and 10 wounded. The government has repeatedly labeled opposition groups seeking to topple President Bashar al-Assad as terrorist organizations.


The reasons for such divergent accounts could not be immediately ascertained.


Checkpoints in rural areas often serve as rudimentary bases for the government, with large numbers of men and matériel stationed in them to carry the fight across the province.


Another car bombing was reported in Mazzeh 86, a Damascus neighborhood on the slopes below the presidential palace, home to many members of the security forces. The forces are dominated by members of Mr. Assad’s Alawite minority, which controls the country.


The Free Syrian Army claimed responsibility for that attack, saying in a statement that its fighters had targeted officers as well as members of the armed militias who fight for the government. The statement, posted on Facebook, claimed a large number of casualties but did not give any figures.


The Syrian Observatory said the bomb, which it described as a booby-trapped car that exploded in Bride Square, killed 5 people and wounded more than 30, some of them critically.


Pictures posted on Facebook showed a large column of smoke rising from the area.


Damascus residents reached by telephone said that they were trying to flee the heavy fighting, but that there was so much going on in every direction that they did not quite know where to run.


“There is very, very intense shelling on southern Damascus right now,” said an activist reached by Skype who goes by Abu Qays al-Shami. At least 10 people were killed as government helicopters and tanks blasted the area, he said.


Residents said the fighting had erupted in and around the Yarmouk camp in southern Damascus, the center of Palestinian life in Syria for decades. Many Palestinians have sided with the nearly 20-month-old anti-Assad uprising, but the Popular Front for the Liberation of Palestine-General Command, a splinter Palestinian group long supported by the government, still backs Mr. Assad. The fighting erupted between the organization and government opponents.


Elsewhere in southern Damascus, government helicopters were shelling the restive neighborhood of Hajjar al-Aswad, a target of frequent attacks in recent weeks, according to the Local Coordinating Committees, an anti-Assad activist group that keeps track of casualties. SANA said five people were killed in Yarmouk, including a woman and three children, when a mortar shell hit a public minibus. The agency blamed terrorist organizations.


In its daily roundup of violence around the country, SANA also said that government forces clashed with opposition groups in the eastern city of Deir ez-Zour and in Aleppo, the northern city that has been a battleground since midsummer.


Activist organizations reported a number of airstrikes around the country.


One extremely graphic video posted from the village of Kafrnabel, near Idlib, shows bloodied victims dumped into a truck in the aftermath of what was described as an aerial assault. A shot of the main street shows flames leaping from vehicles and residents running around in panic. At least five men and one woman died, the Syrian Observatory said, but more victims were believed buried under the rubble. Video accounts cannot be independently confirmed.


Hania Mourtada contributed reporting from Beirut, and Hala Droubi from Dubai, United Arab Emirates.



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Google Casts a Big Shadow on Smaller Web Sites


Annie Tritt for The New York Times


Jeffrey G. Katz, the chief executive of Wize Commerce, seen with employees. He says that about 60 percent of the traffic for the company’s Nextag comparison-shopping site comes from Google.





In a geeky fire drill, engineers and outside consultants at Nextag scrambled to see if the problem was its own fault. Maybe some inadvertent change had prompted Google’s algorithm to demote Nextag when a person typed in shopping-related search terms like “kitchen table” or “lawn mower.”


But no, the engineers determined. And traffic from Google’s search engine continued to decline, by half.


Nextag’s response? It doubled its spending on Google paid search advertising in the last five months.


The move was costly but necessary to retain shoppers, Mr. Katz says, because an estimated 60 percent of Nextag’s traffic comes from Google, both from free search and paid search ads, which are ads that are related to search results and appear next to them. “We had to do it,” says Mr. Katz, chief executive of Wize Commerce, owner of Nextag. “We’re living in Google’s world.”


Regulators in the United States and Europe are conducting sweeping inquiries of Google, the dominant Internet search and advertising company. Google rose by technological innovation and business acumen; in the United States, it has 67 percent of the search market and collects 75 percent of search ad dollars. Being big is no crime, but if a powerful company uses market muscle to stifle competition, that is an antitrust violation.


So the government is focusing on life in Google’s world for the sprawling economic ecosystem of Web sites that depend on their ranking in search results. What is it like to live this way, in a giant’s shadow? The experience of its inhabitants is nuanced and complex, a blend of admiration and fear.


The relationship between Google and Web sites, publishers and advertisers often seems lopsided, if not unfair. Yet Google has also provided and nurtured a landscape of opportunity. Its ecosystem generates $80 billion a year in revenue for 1.8 million businesses, Web sites and nonprofit organizations in the United States alone, it estimates.


The government’s scrutiny of Google is the most exhaustive investigation of a major corporation since the pursuit of Microsoft in the late 1990s.


The staff of the Federal Trade Commission has recommended preparing an antitrust suit against Google, according to people briefed on the inquiry, who spoke on the condition they not be identified. But the commissioners must vote to proceed. Even if they do, the government and Google could settle.


Google has drawn the attention of antitrust officials as it has moved aggressively beyond its dominant product — search and search advertising — into fields like online commerce and local reviews. The antitrust issue is whether Google uses its search engine to favor its offerings like Google Shopping and Google Plus Local over rivals.


For policy makers, Google is a tough call.


“What to do with an attractive monopolist, like Google, is a really challenging issue for antitrust,” says Tim Wu, a professor at Columbia Law School and a former senior adviser to the F.T.C. “The goal is to encourage them to stay in power by continuing to innovate instead of excluding competitors.”


SPEAKING at a Google Zeitgeist conference in Arizona last month, Larry Page, the company’s co-founder and chief executive, said he understood the government scrutiny of his company, given Google’s size and reach. “There’s very many decisions we make that really impact a lot of people,” he acknowledged.


The main reason is that Google is continually adjusting its search algorithm — the smart software that determines the relevance, ranking and presentation of search results, typically links to other Web sites.


Google says it makes the changes to improve its service, and has long maintained that its algorithm weeds out low-quality sites and shows the most useful results, whether or not they link to Google products.


“Our first and highest goal has to be to get the user the information they want as quickly and easily as possible,” says Matt Cutts, leader of the Web spam team at Google.


But Google’s algorithm is secret, and changes can leave Web sites scrambling.


Consider Vote-USA.org, a nonprofit group started in 2003. It provides online information for voters to avoid the frustration of arriving at a polling booth and barely recognizing half the names on the ballot. The site posts free sample ballots for federal, state and local elections with candidates’ pictures, biographies and views on issues.


In the 2004 and 2006 elections, users created tens of thousands of sample ballots. By 2008, traffic had fallen sharply, says Ron Kahlow, who runs Vote-USA.org, because “we dropped off the face of the map on Google.”


As founder of a search-engine optimization company and a recipient of grants that Google gives nonprofits to advertise free, Mr. Kahlow knows a thing or two about how to operate in Google’s world. He pored over Google’s guidelines for Web sites, made changes and e-mailed Google. Yet he received no response.


“I lost all donations to support the operation,” he said. “It was very, very painful.”


A breakthrough came through a personal connection. A friend of Mr. Kahlow knew Ed Black, chief executive of the Computer & Communications Industry Association, whose members include Google. Mr. Black made an inquiry on Mr. Kahlow’s behalf, and a Google engineer investigated.


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