Well: Boosting Your Flu Shot Response

Phys Ed

Gretchen Reynolds on the science of fitness.

As this year’s influenza season continues to take its toll, those procrastinators now hurrying to get a flu shot might wish to know that exercise may amplify the flu vaccine’s effect. And for maximal potency, the exercise should be undertaken at the right time and involve the right dosage of sweat, according to several recent reports.

Flu shots are one of the best ways to lessen the risk of catching the disease. But they are not foolproof. By most estimates, the yearly flu vaccine blocks infection 50 to 70 percent of the time, meaning that some of those being inoculated gain little protection. The more antibodies someone develops, the better their protection against the flu, generally speaking. But for some reason, some people’s immune systems produce fewer antibodies to the influenza virus than others’ do.

Being physically fit has been found in many studies to improve immunity in general and vaccine response in particular. In one notable 2009 experiment, sedentary, elderly adults, a group whose immune systems typically respond weakly to the flu vaccine, began programs of either brisk walking or a balance and stretching routine. After 10 months, the walkers had significantly improved their aerobic fitness and, after receiving flu shots, displayed higher average influenza antibody counts 20 weeks after a flu vaccine than the group who had stretched.

But that experiment involved almost a year of dedicated exercise training, a prospect that is daunting to some people and, in practical terms, not helpful for those who have entered this flu season unfit.

So scientists have begun to wonder whether a single, well-calibrated bout of exercise might similarly strengthen the vaccine’s potency.

To find out, researchers at Iowa State University in Ames recently had young, healthy volunteers, most of them college students, head out for a moderately paced 90-minute jog or bike ride 15 minutes after receiving their flu shot. Other volunteers sat quietly for 90 minutes after their shot. Then the researchers checked for blood levels of influenza antibodies a month later.

Those volunteers who had exercised after being inoculated, it turned out, exhibited “nearly double the antibody response” of the sedentary group, said Marian Kohut, a professor of kinesiology at Iowa State who oversaw the study, which is being prepared for publication. They also had higher blood levels of certain immune system cells that help the body fight off infection.

To test how much exercise really is required, Dr. Kohut and Justus Hallam, a graduate student in her lab, subsequently repeated the study with lab mice. Some of the mice exercised for 90 minutes on a running wheel, while others ran for either half as much time (45 minutes) or twice as much (3 hours) after receiving a flu shot.

Four weeks later, those animals that, like the students, had exercised moderately for 90 minutes displayed the most robust antibody response. The animals that had run for three hours had fewer antibodies; presumably, exercising for too long can dampen the immune response. Interestingly, those that had run for 45 minutes also had a less robust response. “The 90-minute time point appears to be optimal,” Dr. Kohut says.

Unless, that is, you work out before you are inoculated, another set of studies intimates, and use a dumbbell. In those studies, undertaken at the University of Birmingham in England, healthy, adult volunteers lifted weights for 20 minutes several hours before they were scheduled to receive a flu shot, focusing on the arm that would be injected. Specifically, they completed multiple sets of biceps curls and side arm raises, employing a weight that was 85 percent of the maximum they could lift once. Another group did not exercise before their shot.

After four weeks, the researchers checked for influenza antibodies. They found that those who had exercised before the shot generally displayed higher antibody levels, although the effect was muted among the men, who, as a group, had responded to that year’s flu vaccine more robustly than the women had.

Over all, “we think that exercise can help vaccine response by activating parts of the immune system,” said Kate Edwards, now a lecturer at the University of Sydney, and co-author of the weight-training study.

With the biceps curls, she continued, the exercises probably induced inflammation in the arm muscles, which may have primed the immune response there.

As for 90 minutes of jogging or cycling after the shot, it probably sped blood circulation and pumped the vaccine away from the injection site and to other parts of the body, Dr. Kohut said. The exercise probably also goosed the body’s overall immune system, she said, which, in turn, helped exaggerate the vaccine’s effect.

But, she cautions, data about exercise and flu vaccines is incomplete. It is not clear, for instance, whether there is any advantage to exercising before the shot instead of afterward, or vice versa; or whether doing both might provoke the greatest response – or, alternatively, be too much and weaken response.

So for now, she says, the best course of action is to get a flu shot, since any degree of protection is better than none, and, if you can, also schedule a visit to the gym that same day. If nothing else, spending 90 minutes on a stationary bike will make any small twinges in your arm from the shot itself seem pretty insignificant.

Read More..

Well: Boosting Your Flu Shot Response

Phys Ed

Gretchen Reynolds on the science of fitness.

As this year’s influenza season continues to take its toll, those procrastinators now hurrying to get a flu shot might wish to know that exercise may amplify the flu vaccine’s effect. And for maximal potency, the exercise should be undertaken at the right time and involve the right dosage of sweat, according to several recent reports.

Flu shots are one of the best ways to lessen the risk of catching the disease. But they are not foolproof. By most estimates, the yearly flu vaccine blocks infection 50 to 70 percent of the time, meaning that some of those being inoculated gain little protection. The more antibodies someone develops, the better their protection against the flu, generally speaking. But for some reason, some people’s immune systems produce fewer antibodies to the influenza virus than others’ do.

Being physically fit has been found in many studies to improve immunity in general and vaccine response in particular. In one notable 2009 experiment, sedentary, elderly adults, a group whose immune systems typically respond weakly to the flu vaccine, began programs of either brisk walking or a balance and stretching routine. After 10 months, the walkers had significantly improved their aerobic fitness and, after receiving flu shots, displayed higher average influenza antibody counts 20 weeks after a flu vaccine than the group who had stretched.

But that experiment involved almost a year of dedicated exercise training, a prospect that is daunting to some people and, in practical terms, not helpful for those who have entered this flu season unfit.

So scientists have begun to wonder whether a single, well-calibrated bout of exercise might similarly strengthen the vaccine’s potency.

To find out, researchers at Iowa State University in Ames recently had young, healthy volunteers, most of them college students, head out for a moderately paced 90-minute jog or bike ride 15 minutes after receiving their flu shot. Other volunteers sat quietly for 90 minutes after their shot. Then the researchers checked for blood levels of influenza antibodies a month later.

Those volunteers who had exercised after being inoculated, it turned out, exhibited “nearly double the antibody response” of the sedentary group, said Marian Kohut, a professor of kinesiology at Iowa State who oversaw the study, which is being prepared for publication. They also had higher blood levels of certain immune system cells that help the body fight off infection.

To test how much exercise really is required, Dr. Kohut and Justus Hallam, a graduate student in her lab, subsequently repeated the study with lab mice. Some of the mice exercised for 90 minutes on a running wheel, while others ran for either half as much time (45 minutes) or twice as much (3 hours) after receiving a flu shot.

Four weeks later, those animals that, like the students, had exercised moderately for 90 minutes displayed the most robust antibody response. The animals that had run for three hours had fewer antibodies; presumably, exercising for too long can dampen the immune response. Interestingly, those that had run for 45 minutes also had a less robust response. “The 90-minute time point appears to be optimal,” Dr. Kohut says.

Unless, that is, you work out before you are inoculated, another set of studies intimates, and use a dumbbell. In those studies, undertaken at the University of Birmingham in England, healthy, adult volunteers lifted weights for 20 minutes several hours before they were scheduled to receive a flu shot, focusing on the arm that would be injected. Specifically, they completed multiple sets of biceps curls and side arm raises, employing a weight that was 85 percent of the maximum they could lift once. Another group did not exercise before their shot.

After four weeks, the researchers checked for influenza antibodies. They found that those who had exercised before the shot generally displayed higher antibody levels, although the effect was muted among the men, who, as a group, had responded to that year’s flu vaccine more robustly than the women had.

Over all, “we think that exercise can help vaccine response by activating parts of the immune system,” said Kate Edwards, now a lecturer at the University of Sydney, and co-author of the weight-training study.

With the biceps curls, she continued, the exercises probably induced inflammation in the arm muscles, which may have primed the immune response there.

As for 90 minutes of jogging or cycling after the shot, it probably sped blood circulation and pumped the vaccine away from the injection site and to other parts of the body, Dr. Kohut said. The exercise probably also goosed the body’s overall immune system, she said, which, in turn, helped exaggerate the vaccine’s effect.

But, she cautions, data about exercise and flu vaccines is incomplete. It is not clear, for instance, whether there is any advantage to exercising before the shot instead of afterward, or vice versa; or whether doing both might provoke the greatest response – or, alternatively, be too much and weaken response.

So for now, she says, the best course of action is to get a flu shot, since any degree of protection is better than none, and, if you can, also schedule a visit to the gym that same day. If nothing else, spending 90 minutes on a stationary bike will make any small twinges in your arm from the shot itself seem pretty insignificant.

Read More..

Rights Group Reports on Abuses of Surveillance and Censorship Technology

A Canadian human rights monitoring group has documented the use of American-made Internet surveillance and censorship technology by more than a dozen governments, some with harsh human rights policies like Syria, China and Saudi Arabia.

Jakub Dalek of the Munk School of Global Affairs.

Thor Swift for The New York Times

Morgan Marquis-Boire led the research with Mr. Dalek.

The Citizen Lab Internet research group, based at the Munk School of Global Affairs at the University of Toronto, used computer servers to scan for the distinctive signature of gear made by Blue Coat Systems of Sunnyvale, Calif.

It determined that Egypt, Kuwait, Qatar, Saudi Arabia and the United Arab Republic employed a Blue Coat system that could be used for digital censorship. The group also determined that Bahrain, China, India, Indonesia, Iraq, Kenya, Kuwait, Lebanon, Malaysia, Nigeria, Qatar, Russia, Saudi Arabia, South Korea, Singapore, Thailand, Turkey and Venezuela used equipment that could be used for surveillance and tracking.

The authors said they wanted to alert the public that there was a growing amount of surveillance and content-filtering technology distributed throughout the Internet. The technology is not restricted from export by the State Department, except to countries that are on embargo lists, like Syria, Iran and North Korea.

“Our findings support the need for national and international scrutiny of the country Blue Coat implementations we have identified, and a closer look at the global proliferation of dual-use information and communications technology,” the group noted. “We hope Blue Coat will take this as an opportunity to explain their due diligence process to ensure that their devices are not used in ways that violate human rights.”

A spokesman for Blue Coat Systems said the firm had not seen the final report and was not prepared to comment.

In 2011, several groups, including Telecomix and Citizen Labs, raised concerns that Blue Coat products were being used to find and track opponents of the Syrian government. The company initially denied that its equipment had been sold to Syria, which is subject to United States trade sanctions.

Shortly afterward, Blue Coat reversed itself and acknowledged that the systems were indeed in Syria, but it said that the devices had been shipped to a distributor in Dubai, and said that it thought that they had been destined for the Iraqi Ministry of Communications.

The Citizen Lab research project was led by Morgan Marquis-Boire and Jakub Dalek. Mr. Marquis-Boire, a Google software engineer, has during the last year been involved in a variety of research projects aimed at exposing surveillance tools used by authoritarian regimes. He said that he carefully segregated his work at Google from his human rights research.

Last year, Mr. Marquis-Boire used computer servers to identify the use of an intelligence-oriented surveillance software program, called FinSpy, which was being used by Bahrain to track opposition activists.

On a hunch last month, the researchers used the Shodan search engine, a specialized Internet tool intended to help identify computers and software services that were connected to the Internet. They were able to identify a number of the Blue Coat systems that are used for content filtering and for “deep packet inspection,” a widely used technology for detecting and controlling digital content as it travels through the Internet.

The researchers stressed that they were aware that there were both benign and harmful uses for the Blue Coat products identified as ProxySG, which functions as a Web filter, and a second system, PacketShaper, which can detect about 600 Web applications and can be used to control undesirable Web traffic.

“I’m not trying to completely demonize this technology,” Mr. Marquis-Boire said.

The researchers also noted that the equipment does not directly fall under the dual-use distinction employed by the United States government to control the sale of equipment that has both military and civilian applications, but it can be used for both political and intelligence applications by authoritarian governments.

“Syria is subject to U.S. export sanctions,” said Sarah McKune, a senior researcher at the Citizen Lab. “When it comes to other countries that aren’t subject to U.S. sanctions it’s a more difficult situation. There could still be significant human rights impact.”

The researchers also noted that a large number of American and foreign companies supplied similar gear in what Gartner, the market research firm, described as a $1.02 billion market in a report issued in May 2012.

The researchers said that some American security technology companies, like Websense, had taken strong human rights stands, but had declined to grapple with the issue of the possible misuse of the technology.

This article has been revised to reflect the following correction:

Correction: January 16, 2013

An earlier version of this article misspelled the surname of a senior researcher at the Citizen Lab Internet research group. She is Sarah McKune, not McCune.

Read More..

Facing the French, Mali Rebels Dig In and Blend In

Joe Penney/Reuters

As France fortified its ground forces in Mali, French soldiers refueled armored personnel carriers, newly arrived from Ivory Coast, at a Bamako air base on Tuesday.

BAMAKO, Mali — In the face of fierce, all-night bombardment by the French military, Mali’s Islamist insurgents have hunkered down to fight again.

Barging into some of the mud-brick houses in the battle zone and ejecting residents, they have sought to implant themselves in the local population and add to the huge challenges facing the French military campaign to loosen their grip on Mali.

“They are in the town, almost everywhere in the town,” said Bekaye Diarra, who owns the pharmacy in Diabaly, which experienced French bombing on Tuesday but remained under the control of the insurgents. “They are installing themselves.”

Benco Ba, a parliamentary deputy there, described residents in fear of the conflict that had descended on them. “The jihadists are going right into people’s families,” he said. “They have completely occupied the town. They are dispersed. It’s fear.”

Six days into the French military campaign, it was becoming clear that airstrikes alone will probably not be enough to root out these battle-hardened fighters, who know well the harsh grassland and desert terrain of Mali.

French Defense Minister Jean-Yves Le Drian, speaking as French ground forces deployed in the north, said on Wednesday that the campaign would be long, Reuters reported.

“We’re in a better position than last week, but the combat continues and it will be long, I imagine,” he said on RTL radio. “Today the ground forces are in the process of deploying,” he said. “Now the French forces are reaching the north,” Reuters said.

Adm. Edouard Guillaud, the French chief of staff, was quoted by The Associated Press as saying that ground operations began overnight. “Now we’re on the ground,” Admiral Guillaud said. “We will be in direct combat within hours.”

Containing the rebels’ southern advance toward Bamako, the capital, is proving more challenging than anticipated, French military officials have acknowledged. And with the Malian Army in disarray and no outside African force yet assembled, displacing the rebels from the country altogether appears to be an elusive, long-term challenge.

The jihadists are “dug in” at Diabaly, Mr. Le Drian said Tuesday at a news conference. From that strategic town, they “threaten the south,” he said, adding: “We face a well-armed and determined adversary.”

Mr. Le Drian also acknowledged that the Malian Army had not managed to retake the town of Konna, whose seizure by the rebels a week ago provoked the French intervention. “We will continue the strikes to diminish their potential,” the minister said.

Using advanced attack planes and sophisticated military helicopters, the French campaign has forced the Islamists from important northern towns like Gao and Douentza. But residents there say that while the insurgents suffered losses, many of them had simply gone into the nearby bush.

“Bombing will weaken them, and it will stop their advance,” said Djallil Lounnas, an expert on the region at the University of Montreal who has written widely on Al Qaeda in the Islamic Maghreb, one of the main extremist groups in northern Mali. “But as soon as the bombing stops, they’ll come back.”

Since the French started bombing, he said, “the situation has changed slightly, but not fundamentally.”

Other analysts said that while forcing the insurgents from the cities was achievable, eliminating them altogether would require considerable additional effort.

“You can’t launch a war of extermination against a very tenacious and mobile adversary,” said Col. Michel Goya of the French Military Academy’s Strategic Research Institute. “We are in a classic counterinsurrectionary situation. They are well armed, but the weapons are not sophisticated. A couple of thousand men, very mobile.”

And they have been preparing for battle for months.

One resident of Gao who accompanied Islamist fighters to a desert hide-out in recent months described a vast system of underground caves big enough to drive cars into, said Corinne Dufka, a senior researcher at Human Rights Watch.

Adam Nossiter reported from Bamako, and Eric Schmitt from Washington. Steven Erlanger and Scott Sayare contributed reporting from Paris, and Elisabeth Bumiller from Madrid.

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California to Give Web Courses a Big Trial

A plan to offer an array of online college classes at a California state university could, if the students are successful, open the door to teaching hundreds of thousands of California students at a lower cost via the Internet.

Udacity, a Silicon Valley start-up that creates online college classes, will announce a deal on Tuesday with San Jose State University for a series of remedial and introductory courses.

Because the courses are intended to involve the classroom instructor, it could also help to blunt professors’ unease with the online classes. 

The state university’s deal with Udacity is also the first time that professors at a university have collaborated with a provider of a MOOC — massive open online course — to create for-credit courses with students watching videos and taking interactive quizzes, and receiving support from online mentors.

Eventually, such courses could be offered to hundreds of thousands of students in the state.

California Gov. Jerry Brown, who has been pushing state universities to move more aggressively into online education, approached the company to come up with a technological solution for what has become a vexing challenge for the state.

Ellen N. Junn, provost and vice president for academic affairs at the university in San Jose, said the California State University System faces a crisis because more than 50 percent of entering students cannot meet basic requirements.

“They graduate from high school, but they cannot pass our elementary math and English placement tests,” she said.

The Udacity pilot program will include a remedial algebra course, a college-level algebra course and introductory statistics.

For the pilot project starting this month, however, the courses will be limited to 300 students — half from San Jose State University, and half from local community colleges and high schools — who will pay lower than usual tuition. The cost of each three-unit course will be $150, significantly less than regular San Jose State tuition. Sebastian Thrun, one of the founders of Udacity, would not disclose how much the company would be paid for its participation.

San Jose State will receive funds from the National Science Foundation to study the effectiveness of the new online classroom design.

Open online courses exploded in American higher education in 2011 after Mr. Thrun, a nationally known artificial-intelligence researcher at Stanford, and Peter Norvig, Google’s director of research, offered to teach an introductory artificial-intelligence course online. More than 160,000 students initially registered for the class.

After two other Stanford courses each attracted more than 100,000 students, Dr. Thrun started his venture. Two other Stanford computer scientists, Andrew Ng and Daphne Koller, also established a competing private company, Coursera, to develop technologies necessary to change the reach and effectiveness of online education.

The courses have rapidly moved from the periphery to the center of higher education policy as a growing number of schools have begun experimenting with ways to offer the courses for credit toward a degree.

EdX, a university collaboration initiated by the Massachusetts Institute of Technology and Harvard last year, this month will begin offering some of its courses at two Massachusetts community colleges, in a blended format.

Recently edX completed a pilot offering of its difficult circuits and electronics course at San Jose State to stunning results: while 40 percent of the students in the traditional version of the class got a grade of C or lower, only 9 percent in the blended edX class got such a low grade.

Last fall, for the first time, Udacity’s courses were tried on a small group of struggling high school students, at the Winfree Academy Charter School system, a cluster of schools near Dallas-Fort Worth created to help struggling students and reclaim dropouts.

“I was a little scared to put our kids, who are struggling and at risk of dropping out, into a class written by a Stanford professor,” said Melody Chalkley, Winfree’s founder. “But of the 23 students who used Udacity, one withdrew from the school, and the other 22 all finished successfully. And two young women got through the whole physics course in just two weeks.”

This article has been revised to reflect the following correction:

Correction: January 15, 2013

An earlier version of this article misstated the name of a California university faculty group. It is the California Faculty Association, not the California Teachers Association. The article also misstated the nature of the courses that San Jose State University will offer with Udacity. The courses will involve students watching videos and taking interactive quizzes; they will not be blended courses with students first watching videos on their own, and then coming to class to work on assignments with a professor.

Read More..

Well: Turning to the Web for a Medical Diagnosis

Thirty-five percent of American adults said they have used the Internet to diagnose a medical condition for themselves or someone else, according to a new Pew Research Center study. Women are more likely than men to turn to the Internet for diagnoses. Other groups more likely to do so are younger people, white adults, people with college degrees and those who live in households with income above $75,000.

The study, released by Pew’s Internet and American Life Project on Tuesday, points out that Americans have always tried to answer their health questions at home, but that the Internet has expanded the options for research. Previous surveys have asked questions about online diagnoses, but the Pew study was the first to focus on the topic with a nationally representative sample, said Susannah Fox, an associate director at Pew Internet. Surveyors interviewed 3,014 American adults by telephone, from August to September 2012.

Of the one in three Americans who used the Internet for a diagnosis, about a third said they did not go to a doctor to get a professional medical opinion, while 41 percent said a doctor confirmed their diagnosis. Eighteen percent said a doctor did not agree with their diagnosis. As far as where people start when researching health conditions online, 77 percent said they started at a search engine like Google, Bing or Yahoo, while 13 percent said they began at a site that specializes in health information.

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Well: Turning to the Web for a Medical Diagnosis

Thirty-five percent of American adults said they have used the Internet to diagnose a medical condition for themselves or someone else, according to a new Pew Research Center study. Women are more likely than men to turn to the Internet for diagnoses. Other groups more likely to do so are younger people, white adults, people with college degrees and those who live in households with income above $75,000.

The study, released by Pew’s Internet and American Life Project on Tuesday, points out that Americans have always tried to answer their health questions at home, but that the Internet has expanded the options for research. Previous surveys have asked questions about online diagnoses, but the Pew study was the first to focus on the topic with a nationally representative sample, said Susannah Fox, an associate director at Pew Internet. Surveyors interviewed 3,014 American adults by telephone, from August to September 2012.

Of the one in three Americans who used the Internet for a diagnosis, about a third said they did not go to a doctor to get a professional medical opinion, while 41 percent said a doctor confirmed their diagnosis. Eighteen percent said a doctor did not agree with their diagnosis. As far as where people start when researching health conditions online, 77 percent said they started at a search engine like Google, Bing or Yahoo, while 13 percent said they began at a site that specializes in health information.

Read More..

California to Give Web Courses a Big Trial

A plan to offer an array of online college classes at a California state university could, if the students are successful, open the door to teaching hundreds of thousands of California students at a lower cost via the Internet.

Udacity, a Silicon Valley start-up that creates online college classes, will announce a deal on Tuesday with San Jose State University for a series of remedial and introductory courses.

Because the courses are intended to involve the classroom instructor, it could also help to blunt professors’ unease with the online classes. 

The state university’s deal with Udacity is also the first time that professors at a university have collaborated with a provider of a MOOC — massive open online course — to create for-credit courses with students watching videos and taking interactive quizzes, and receiving support from online mentors.

Eventually, such courses could be offered to hundreds of thousands of students in the state.

California Gov. Jerry Brown, who has been pushing state universities to move more aggressively into online education, approached the company to come up with a technological solution for what has become a vexing challenge for the state.

Ellen N. Junn, provost and vice president for academic affairs at the university in San Jose, said the California State University System faces a crisis because more than 50 percent of entering students cannot meet basic requirements.

“They graduate from high school, but they cannot pass our elementary math and English placement tests,” she said.

The Udacity pilot program will include a remedial algebra course, a college-level algebra course and introductory statistics.

For the pilot project starting this month, however, the courses will be limited to 300 students — half from San Jose State University, and half from local community colleges and high schools — who will pay lower than usual tuition. The cost of each three-unit course will be $150, significantly less than regular San Jose State tuition. Sebastian Thrun, one of the founders of Udacity, would not disclose how much the company would be paid for its participation.

San Jose State will receive funds from the National Science Foundation to study the effectiveness of the new online classroom design.

Open online courses exploded in American higher education in 2011 after Mr. Thrun, a nationally known artificial-intelligence researcher at Stanford, and Peter Norvig, Google’s director of research, offered to teach an introductory artificial-intelligence course online. More than 160,000 students initially registered for the class.

After two other Stanford courses each attracted more than 100,000 students, Dr. Thrun started his venture. Two other Stanford computer scientists, Andrew Ng and Daphne Koller, also established a competing private company, Coursera, to develop technologies necessary to change the reach and effectiveness of online education.

The courses have rapidly moved from the periphery to the center of higher education policy as a growing number of schools have begun experimenting with ways to offer the courses for credit toward a degree.

EdX, a university collaboration initiated by the Massachusetts Institute of Technology and Harvard last year, this month will begin offering some of its courses at two Massachusetts community colleges, in a blended format.

Recently edX completed a pilot offering of its difficult circuits and electronics course at San Jose State to stunning results: while 40 percent of the students in the traditional version of the class got a grade of C or lower, only 9 percent in the blended edX class got such a low grade.

Last fall, for the first time, Udacity’s courses were tried on a small group of struggling high school students, at the Winfree Academy Charter School system, a cluster of schools near Dallas-Fort Worth created to help struggling students and reclaim dropouts.

“I was a little scared to put our kids, who are struggling and at risk of dropping out, into a class written by a Stanford professor,” said Melody Chalkley, Winfree’s founder. “But of the 23 students who used Udacity, one withdrew from the school, and the other 22 all finished successfully. And two young women got through the whole physics course in just two weeks.”

This article has been revised to reflect the following correction:

Correction: January 15, 2013

An earlier version of this article misstated the name of a California university faculty group. It is the California Faculty Association, not the California Teachers Association. The article also misstated the nature of the courses that San Jose State University will offer with Udacity. The courses will involve students watching videos and taking interactive quizzes; they will not be blended courses with students first watching videos on their own, and then coming to class to work on assignments with a professor.

Read More..

IHT Rendezvous: Talking Trust With China's Army

BEIJING — China will soon publish a new country map that expands its claims to disputed territories. Japan has announced its first increase in defense spending in 11 years in a move widely perceived as countering China. Recently, fighter planes and other aircraft have been used by both countries as tensions grow over a group of islands in the East China Sea that both claim, called the Diaoyu in Chinese and Senkaku in Japanese.

With suspicion and escalation apparently the order of the day in East and Southeast Asia, and speculation growing if this year will see an armed skirmish between China and Japan, it is crucial to understand how the military of the rising nation sees the world. So a recent post by an American scholar who took part in a forum organized by China’s military in Beijing had some fascinating things to say.

A focus of the meeting, called “Security in Asia: New Problems and New Thinking,” was trust. Yet with deeply divergent worldviews on display some discussions ended up “modeling” distrust rather than overcoming it, wrote Christopher Ford, one of 60 security and defense specialists, including serving military men, from 21 countries, who gathered in November for the Fourth Xiangshan Forum. The event was organized by the China Association for Military Science, which is part of the Academy of Military Science of the People’s Liberation Army, and attendees on the Chinese side included the air force general Liu Chengjun, the state-run China Military Online reported.

“Indeed, our discussions quickly veered off course during the first day, from the presentation of prepared papers on the subject of trust into lengthy comment-and-response cycles in which the participants sometimes seemed to inhabit parallel universes of competing facts and historical claims,” Mr. Ford wrote in New Paradigms Forum, an issues and discussion Web site. Mr. Ford is a senior fellow at the Hudson Institute in Washington, D.C. and previously a principal deputy assistant Secretary of State, as well as a former U.S. special representative for Nuclear Nonproliferation, according to New Paradigms Forum.

“In particular, the Chinese and non-Chinese participants seemed to start from radically different starting points on surprisingly basic matters of fact,” including who started the 1950-53 Korean War, what happened in the South China Sea last year as tensions rose over disputed territories, and whether or not Japanese history textbooks acknowledge that country’s invasion of China in the 1930s, Mr. Ford noted.

“In principle, these questions were objectively ‘knowable,’ yet our hosts were not interested in empirical evaluation. Instead, our Roundtable discussions bogged down, for it was apparently central to the agenda of most PLA participants that their version of these facts – and their accompanying characterizations about fault and blame – be accepted by all others as a starting point for future-oriented discussions of ‘mutual trust,’” Mr. Ford wrote.

“Significantly, no non-Chinese participant in our Roundtable presumed to tell the Chinese participants what China’s strategic intentions are,” he continued. “Instead, non-Chinese participants explicitly referred to foreign concerns rooted in perceptions of Beijing’s intentions, and asked about how it might be possible to lessen foreign misperceptions that might exist in this regard if indeed the PRC’s rise is as benign as its leaders claim.”

The Chinese side behaved differently, Mr. Ford wrote, revealing profound differences in worldview.

“The PLA participants, however, were quite comfortable telling non-Chinese what their various governments’ intentions are. We were told, for instance, that Japan wishes to return to imperialist adventurism of the sort that it displayed during the Second World War. The United States, we were further told, wishes to “contain” China and obstruct its rise. These Chinese assumptions were not depicted as mere perceptions, but instead as matters of inarguable fact that we non-Chinese must accept – and thereafter atone for – in order to make future trust possible,” he wrote.

Mr. Ford’s conclusion? Here I simplify his argument for the sake of brevity, but it is essentially this: “the emerging Chinese superpower hungers to control other peoples’ narrative of China.”

Why?

“China’s fixation upon shaping others’ accounts of China, then, is arguably not necessarily ‘just’ the result of insecurity or narcissism,” he writes. “It’s actually a strategic objective, because it is assumed that status or role ascriptions and moral characterizations play a critical role in shaping the world they describe.”

“It seems to be felt, for instance, that if the world understands China “properly,” it will tend to behave toward China as China’s rulers desire,” he wrote.

Of course, all this is from the point of view of a Western attendee.

But searching for accounts of the meeting from the Chinese point of view yielded reports from state-run media that focused mostly on the mechanics of the event itself but no inside, or deep, analysis.

One, from the People’s Liberation Army Daily, cited Qi Jianguo, deputy chief of general staff of the Chinese People’s Liberation Army, who attended, hinted at tensions but confined itself to generalities, such as: “Facing deep and complicated changes in the Asia-Pacific security situation, we must stand for and uphold a new security view of ‘mutual trust, mutual benefit, equality, cooperation,’ of wanting peace and not war, of wanting development and not poverty, cooperation and not enmity.”

The more candid accounts from observers outside China was just one indication of the great divide between China and its neighbors as tensions fester in the region, with many of the animosities rooted in strikingly different views of history.

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Wheels Blog: The Seventh-Generation Corvette Is Unveiled in Detroit

DETROIT — The Stingray is back, in name and in spirit.

At an invitation-only gathering hours before the North American International Auto Show was scheduled to open for press previews, General Motors introduced the 2014 Corvette, the seventh generation of Chevrolet’s hallmark sports car.

Underscoring the importance of this vehicle was Chevrolet’s revival of the long-dormant Stingray badge, a name it first used on a 1959 racecar built by G.M.’s design chief, Bill Mitchell. The hope for that original Stingray racecar was to beat Europe’s best, and G.M. still seems to be thinking along those lines.

According to G.M.’s president for North America, Mark Reuss, the latest Stingray is a potential worldbeater.

“Like the ’63 Sting Ray, the best Corvettes embodied performance leadership, delivering cutting-edge technologies, breathtaking design and awe-inspiring driving experiences,” Mr. Reuss said. “The all-new Corvette goes farther than ever, thanks to today’s advancements in design technology and engineering.”

The release of a new Corvette is always highly anticipated by auto enthusiasts; speculation about “C7″ — shorthand for the seventh generation — has run high. Would it get a twin-cam turbocharged powertrain? Would Chevy switch to an exotic midengine chassis?

In actuality, the 2014 model will again have a pushrod V-8 engine in its nose, driving the rear wheels. That conservative approach might be seen as a timid compromise from a company that has just begun to get back on solid financial footing. But the front-engine, rear-drive layout has long defined the Corvette, and this car, like its C6 predecessor, may well show its taillights to cars with specs that more closely conform to what is considered state of the art.

While automakers are quick to toss around the words “all new” to describe their latest offerings, however warmed over they might be, in this case the term is justified — the 2014 Corvette shares only two parts with its predecessor.

The C7 Corvette’s styling is in keeping with the brand’s persona, yet it projects a more aggressive image than previous generations. The clean front fascia is devoid of parking lights, and is energized by a sharp edge where it meets the hood, which is itself defined by a prominent bulge and more hard edges. The curve of the front fenders peaks at yet another edge that blends seamlessly into the body side at the A-pillar. The body’s flanks are defined by character lines that race back from vents behind the front wheel, not unlike those of previous Corvettes, but here those lines are more sharply drawn, with the upper line sweeping up and back to define the shape of the rear quarter panel. The lower character line projects from the body, forming a wing of sorts that flows out of the front fender and terminates at the rear of the door. The coupe’s roofline arcs smoothly to meet the rear spoiler, rather than terminating at the rear window, as in the C6. The individual rear taillights that have long been a part of Corvette design are now paired in a deep recess on each side. Four large exhaust pipes exit center-stage, rear.

The sheet-molded fiberglass body, with carbon-fiber hood and roof panels and carbon-nano composite underbody panels, is 37 pounds lighter than the C6’s body. It rides on a new aluminum frame that is 57 percent stiffer and 99 pounds lighter than the current model’s. The wheelbase is about one inch longer than that of the C6, and the track is almost an inch wider — changes said to provide a more stable feel at high speed.

Inside the cockpit, considerable effort was lavished on upgrading what has generally been considered a blighted zone. Optional carbon fiber trim and real aluminum combine with plastic in a wraparound configuration. The steering wheel, with a 14.1 inch diameter, is smaller than that of the previous model, and two seat choices are offered, with the competition sport version providing more side bolstering to hold occupants in place in spirited maneuvers. Indicative of the car’s purpose is the inclusion of a console-mounted steel grab bar for the passenger.

Under the hood, Chevrolet’s 6.2-liter small block V-8 — now in its fifth-generation design — produces an estimated 450 horsepower and 450 pound-feet of torque. At low speed, torque output exceeds that of the previous 6.2-liter engine by 50 pound-feet. The engine shares few parts with prior Corvette V-8s and is fitted with direct fuel injection that, in combination with other refinements, enables a high compression ratio of 11.5:1. Active Fuel Management, G.M.’s system for deactivating cylinders when they are not needed, lets the car cruise on four cylinders in some driving modes. Final fuel-economy numbers are not yet available.

Two transaxles will be offered: a 6-speed automatic with paddle-shift mode or a 7-speed manual with rev-matching capability — an electronic version of the heel-and-toe shifting techniques that competition drivers employ to enable smooth gear changes when negotiating twisty bits.

The Corvette driver will be able to select from among five driving modes: weather, Eco, Tour, Sport and Track; the default setting will be Tour. Changing modes alters 12 vehicle attributes, including throttle response, shift points, engagement of the limited-slip differential engagement, shock damping and more. Four-piston Brembo brakes provide stopping power, and electric power steering sets the course.

An optional Z51 performance package adds an electronic limited-slip differential that can continuously vary torque split between the rear wheels, dry-sump oiling, upgraded shock absorbers, a revised version of the automaker’s Magnetic Ride Control suspension-regulating system, close-ratio gears for the manual transmission, larger brake rotors and aerodynamic refinements that incorporate air-flow management for cooling of heat-stressed components.

Like its predecessor, the 2014 Corvette Stingray will be built at a G.M. plant in Bowling Green, Ky. The car is expected to arrive at dealerships in the third quarter of this year.

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