John E. Karlin, 1918-2013: John E. Karlin, Who Led the Way to All-Digit Dialing, Dies at 94

Courtesy of Alcatel-Lucent USA

John E. Karlin, a researcher at Bell Labs, studied ways to make the telephone easier to use.

A generation ago, when the poetry of PEnnsylvania and BUtterfield was about to give way to telephone numbers in unpoetic strings, a critical question arose: Would people be able to remember all seven digits long enough to dial them?

And when, not long afterward, the dial gave way to push buttons, new questions arose: round buttons, or square? How big should they be? Most crucially, how should they be arrayed? In a circle? A rectangle? An arc?

For decades after World War II, these questions were studied by a group of social scientists and engineers in New Jersey led by one man, a Bell Labs industrial psychologist named John E. Karlin.

By all accounts a modest man despite his variegated accomplishments (he had a doctorate in mathematical psychology, was trained in electrical engineering and had been a professional violinist), Mr. Karlin, who died on Jan. 28, at 94, was virtually unknown to the general public.

But his research, along with that of his subordinates, quietly yet emphatically defined the experience of using the telephone in the mid-20th century and afterward, from ushering in all-digit dialing to casting the shape of the keypad on touch-tone phones. And that keypad, in turn, would inform the design of a spate of other everyday objects.

It is not so much that Mr. Karlin trained midcentury Americans how to use the telephone. It is, rather, that by studying the psychological capabilities and limitations of ordinary people, he trained the telephone, then a rapidly proliferating but still fairly novel technology, to assume optimal form for use by midcentury Americans.

“He was the one who introduced the notion that behavioral sciences could answer some questions about telephone design,” Ed Israelski, an engineer who worked under Mr. Karlin at Bell Labs in the 1970s, said in a telephone interview on Wednesday.

In 2013, the 50th anniversary of the introduction of the touch-tone phone, the answers to those questions remain palpable at the press of a button. The rectangular design of the keypad, the shape of its buttons and the position of the numbers — with “1-2-3” on the top row instead of the bottom, as on a calculator — all sprang from empirical research conducted or overseen by Mr. Karlin.

The legacy of that research now extends far beyond the telephone: the keypad design Mr. Karlin shepherded into being has become the international standard on objects as diverse as A.T.M.’s, gas pumps, door locks, vending machines and medical equipment.

Mr. Karlin, associated from 1945 until his retirement in 1977 with Bell Labs, headquartered in Murray Hill, N.J., was widely considered the father of human-factors engineering in American industry.

A branch of industrial psychology that combines experimentation, engineering and product design, human-factors engineering is concerned with easing the awkward, often ill-considered marriage between man and machine. In seeking to design and improve technology based on what its users are mentally capable of, the discipline is the cognitive counterpart of ergonomics.

“Human-factors studies are different from market research and other kinds of studies in that we observe people’s behavior and record it, systematically and without bias,” Mr. Israelski said. “The hallmark of human-factors studies is they involve the actual observation of people doing things.”

Among the issues Mr. Karlin examined as the head of Bell Labs’ Human Factors Engineering department — the first department of its kind at an American company — were the optimal length for a phone cord (a study that involved gentle, successful sabotage) and the means by which rotary calls could be made efficiently after the numbers were moved from inside the finger holes, where they had nestled companionably for years, to the rim outside the dial.

John Elias Karlin was born in Johannesburg on Feb. 28, 1918, and reared nearby in Germiston, where his parents owned a grocery store and tearoom.

He earned a bachelor’s degree in philosophy, psychology and music, and a master’s degree in psychology, both from the University of Cape Town. Throughout his studies he was a violinist in the Cape Town Symphony Orchestra and the Cape Town String Quartet.

Moving to the United States, Mr. Karlin earned a Ph.D. from the University of Chicago in 1942. Afterward, he became a research associate at Harvard; he also studied electrical engineering there and at the Massachusetts Institute of Technology.

At Harvard, Mr. Karlin did research for the United States military on problems in psychoacoustics that were vital to the war effort — studying the ways, for instance, in which a bomber’s engine noise might distract its crew from their duties.

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In Nigeria, Polio Vaccine Workers Are Killed by Gunmen

At least nine polio immunization workers were shot to death in northern Nigeria on Friday by gunmen who attacked two clinics, officials said.

The killings, with eerie echoes of attacks that killed nine female polio workers in Pakistan in December, represented another serious setback for the global effort to eradicate polio.

Most of the victims were women and were shot in the back of the head, local reports said.

A four-day vaccination drive had just ended in Kano State, where the killings took place, and the vaccinators were in a “mop-up” phase, looking for children who had been missed, said Sarah Crowe, a spokeswoman for the United Nations Children’s Fund, one of the agencies running the eradication campaign.

Dr. Mohammad Ali Pate, Nigeria’s minister of state for health, said in a telephone interview that it was not entirely clear whether the gunmen were specifically targeting polio workers or just attacking the health centers where vaccinators happened to be gathering early in the morning. “Health workers are soft targets,” he said.

No one immediately took responsibility, but suspicion fell on Boko Haram, a militant Islamist group that has attacked police stations, government offices and even a religious leader’s convoy.

Polio, which once paralyzed millions of children, is now down to fewer than 1,000 known cases around the world, and is endemic in only three countries: Nigeria, Pakistan and Afghanistan.

Since September — when a new polio operations center was opened in the capital and Nigeria’s president, Goodluck Jonathan, appointed a special adviser for polio — the country had been improving, said Dr. Bruce Aylward, chief of polio eradication for the World Health Organization. There have been no new cases since Dec. 3.

While vaccinators have not previously been killed in the country, there is a long history of Nigerian Muslims shunning the vaccine.

Ten years ago, immunization was suspended for 11 months as local governors waited for local scientists to investigate rumors that it caused AIDS or was a Western plot to sterilize Muslim girls. That hiatus let cases spread across Africa. The Nigerian strain of the virus even reached Saudi Arabia when a Nigerian child living in hills outside Mecca was paralyzed.

Heidi Larson, an anthropologist at the London School of Hygiene and Tropical Medicine who tracks vaccine issues, said the newest killings “are kind of mimicking what’s going on in Pakistan, and I feel it’s very much prompted by that.”

In a roundabout way, the C.I.A. has been blamed for the Pakistan killings. In its effort to track Osama bin Laden, the agency paid a Pakistani doctor to seek entry to Bin Laden’s compound on the pretext of vaccinating the children — presumably to get DNA samples as evidence that it was the right family. That enraged some Taliban factions in Pakistan, which outlawed vaccination in their areas and threatened vaccinators.

Nigerian police officials said the first shootings were of eight workers early in the morning at a clinic in the Tarauni neighborhood of Kano, the state capital; two or three died. A survivor said the two gunmen then set fire to a curtain, locked the doors and left.

“We summoned our courage and broke the door because we realized they wanted to burn us alive,” the survivor said from her bed at Aminu Kano Teaching Hospital.

About an hour later, six men on three-wheeled motorcycles stormed a clinic in the Haye neighborhood, a few miles away. They killed seven women waiting to collect vaccine.

Ten years ago, Dr. Larson said, she joined a door-to-door vaccination drive in northern Nigeria as a Unicef communications officer, “and even then we were trying to calm rumors that the C.I.A. was involved,” she said. The Iraq and Afghanistan wars had convinced poor Muslims in many countries that Americans hated them, and some believed the American-made vaccine was a plot by Western drug companies and intelligence agencies.

Since the vaccine ruse in Pakistan, she said, “Frankly, now, I can’t go to them and say, ‘The C.I.A. isn’t involved.’ ”

Dr. Pate said the attack would not stop the newly reinvigorated eradication drive, adding, “This isn’t going to deter us from getting everyone vaccinated to save the lives of our children.”

Aminu Abubakar contributed reported from Kano, Nigeria.

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In Nigeria, Polio Vaccine Workers Are Killed by Gunmen

At least nine polio immunization workers were shot to death in northern Nigeria on Friday by gunmen who attacked two clinics, officials said.

The killings, with eerie echoes of attacks that killed nine female polio workers in Pakistan in December, represented another serious setback for the global effort to eradicate polio.

Most of the victims were women and were shot in the back of the head, local reports said.

A four-day vaccination drive had just ended in Kano State, where the killings took place, and the vaccinators were in a “mop-up” phase, looking for children who had been missed, said Sarah Crowe, a spokeswoman for the United Nations Children’s Fund, one of the agencies running the eradication campaign.

Dr. Mohammad Ali Pate, Nigeria’s minister of state for health, said in a telephone interview that it was not entirely clear whether the gunmen were specifically targeting polio workers or just attacking the health centers where vaccinators happened to be gathering early in the morning. “Health workers are soft targets,” he said.

No one immediately took responsibility, but suspicion fell on Boko Haram, a militant Islamist group that has attacked police stations, government offices and even a religious leader’s convoy.

Polio, which once paralyzed millions of children, is now down to fewer than 1,000 known cases around the world, and is endemic in only three countries: Nigeria, Pakistan and Afghanistan.

Since September — when a new polio operations center was opened in the capital and Nigeria’s president, Goodluck Jonathan, appointed a special adviser for polio — the country had been improving, said Dr. Bruce Aylward, chief of polio eradication for the World Health Organization. There have been no new cases since Dec. 3.

While vaccinators have not previously been killed in the country, there is a long history of Nigerian Muslims shunning the vaccine.

Ten years ago, immunization was suspended for 11 months as local governors waited for local scientists to investigate rumors that it caused AIDS or was a Western plot to sterilize Muslim girls. That hiatus let cases spread across Africa. The Nigerian strain of the virus even reached Saudi Arabia when a Nigerian child living in hills outside Mecca was paralyzed.

Heidi Larson, an anthropologist at the London School of Hygiene and Tropical Medicine who tracks vaccine issues, said the newest killings “are kind of mimicking what’s going on in Pakistan, and I feel it’s very much prompted by that.”

In a roundabout way, the C.I.A. has been blamed for the Pakistan killings. In its effort to track Osama bin Laden, the agency paid a Pakistani doctor to seek entry to Bin Laden’s compound on the pretext of vaccinating the children — presumably to get DNA samples as evidence that it was the right family. That enraged some Taliban factions in Pakistan, which outlawed vaccination in their areas and threatened vaccinators.

Nigerian police officials said the first shootings were of eight workers early in the morning at a clinic in the Tarauni neighborhood of Kano, the state capital; two or three died. A survivor said the two gunmen then set fire to a curtain, locked the doors and left.

“We summoned our courage and broke the door because we realized they wanted to burn us alive,” the survivor said from her bed at Aminu Kano Teaching Hospital.

About an hour later, six men on three-wheeled motorcycles stormed a clinic in the Haye neighborhood, a few miles away. They killed seven women waiting to collect vaccine.

Ten years ago, Dr. Larson said, she joined a door-to-door vaccination drive in northern Nigeria as a Unicef communications officer, “and even then we were trying to calm rumors that the C.I.A. was involved,” she said. The Iraq and Afghanistan wars had convinced poor Muslims in many countries that Americans hated them, and some believed the American-made vaccine was a plot by Western drug companies and intelligence agencies.

Since the vaccine ruse in Pakistan, she said, “Frankly, now, I can’t go to them and say, ‘The C.I.A. isn’t involved.’ ”

Dr. Pate said the attack would not stop the newly reinvigorated eradication drive, adding, “This isn’t going to deter us from getting everyone vaccinated to save the lives of our children.”

Aminu Abubakar contributed reported from Kano, Nigeria.

Read More..

John E. Karlin, 1918-2013: John E. Karlin, Who Led the Way to All-Digit Dialing, Dies at 94

Courtesy of Alcatel-Lucent USA

John E. Karlin, a researcher at Bell Labs, studied ways to make the telephone easier to use.

A generation ago, when the poetry of PEnnsylvania and BUtterfield was about to give way to telephone numbers in unpoetic strings, a critical question arose: Would people be able to remember all seven digits long enough to dial them?

And when, not long afterward, the dial gave way to push buttons, new questions arose: round buttons, or square? How big should they be? Most crucially, how should they be arrayed? In a circle? A rectangle? An arc?

For decades after World War II, these questions were studied by a group of social scientists and engineers in New Jersey led by one man, a Bell Labs industrial psychologist named John E. Karlin.

By all accounts a modest man despite his variegated accomplishments (he had a doctorate in mathematical psychology, was trained in electrical engineering and had been a professional violinist), Mr. Karlin, who died on Jan. 28, at 94, was virtually unknown to the general public.

But his research, along with that of his subordinates, quietly yet emphatically defined the experience of using the telephone in the mid-20th century and afterward, from ushering in all-digit dialing to casting the shape of the keypad on touch-tone phones. And that keypad, in turn, would inform the design of a spate of other everyday objects.

It is not so much that Mr. Karlin trained midcentury Americans how to use the telephone. It is, rather, that by studying the psychological capabilities and limitations of ordinary people, he trained the telephone, then a rapidly proliferating but still fairly novel technology, to assume optimal form for use by midcentury Americans.

“He was the one who introduced the notion that behavioral sciences could answer some questions about telephone design,” Ed Israelski, an engineer who worked under Mr. Karlin at Bell Labs in the 1970s, said in a telephone interview on Wednesday.

In 2013, the 50th anniversary of the introduction of the touch-tone phone, the answers to those questions remain palpable at the press of a button. The rectangular design of the keypad, the shape of its buttons and the position of the numbers — with “1-2-3” on the top row instead of the bottom, as on a calculator — all sprang from empirical research conducted or overseen by Mr. Karlin.

The legacy of that research now extends far beyond the telephone: the keypad design Mr. Karlin shepherded into being has become the international standard on objects as diverse as A.T.M.’s, gas pumps, door locks, vending machines and medical equipment.

Mr. Karlin, associated from 1945 until his retirement in 1977 with Bell Labs, headquartered in Murray Hill, N.J., was widely considered the father of human-factors engineering in American industry.

A branch of industrial psychology that combines experimentation, engineering and product design, human-factors engineering is concerned with easing the awkward, often ill-considered marriage between man and machine. In seeking to design and improve technology based on what its users are mentally capable of, the discipline is the cognitive counterpart of ergonomics.

“Human-factors studies are different from market research and other kinds of studies in that we observe people’s behavior and record it, systematically and without bias,” Mr. Israelski said. “The hallmark of human-factors studies is they involve the actual observation of people doing things.”

Among the issues Mr. Karlin examined as the head of Bell Labs’ Human Factors Engineering department — the first department of its kind at an American company — were the optimal length for a phone cord (a study that involved gentle, successful sabotage) and the means by which rotary calls could be made efficiently after the numbers were moved from inside the finger holes, where they had nestled companionably for years, to the rim outside the dial.

John Elias Karlin was born in Johannesburg on Feb. 28, 1918, and reared nearby in Germiston, where his parents owned a grocery store and tearoom.

He earned a bachelor’s degree in philosophy, psychology and music, and a master’s degree in psychology, both from the University of Cape Town. Throughout his studies he was a violinist in the Cape Town Symphony Orchestra and the Cape Town String Quartet.

Moving to the United States, Mr. Karlin earned a Ph.D. from the University of Chicago in 1942. Afterward, he became a research associate at Harvard; he also studied electrical engineering there and at the Massachusetts Institute of Technology.

At Harvard, Mr. Karlin did research for the United States military on problems in psychoacoustics that were vital to the war effort — studying the ways, for instance, in which a bomber’s engine noise might distract its crew from their duties.

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India Executes Man Tied to 2001 Attack on Parliament

MUMBAI - India on Saturday on Saturday hanged a man who was convicted of an attack on India’s Parliament in 2001 that killed nine people.

The hanging of Afzal Guru, a 43-year-old militant with the group Jaish-e-Mohammad, comes more than a decade after the Dec. 13, 2001, suicide attack on India’s parliament in which five gunmen opened fire, killing nine people, including security officials and one journalist. The execution drew protests from human rights groups concerned about the growing use of capital punishment in such cases.

Mr. Guru was convicted of conspiracy in the plot and sentenced to death by a special court in 2002. In 2004, the Supreme Court of India upheld the call for death sentence.

After the execution, clashes broke out in Mr. Guru’s hometown of Sopore, and police and paramilitary units were called to the scene to restore order.Days before the execution, President Pranab Mukherjee had rejected a mercy plea by Mr. Guru’s wife, according to reports from the Press Trust of India, paving the way for Mr. Guru’s hanging in the Tihar Jail complex, officials said.

Mr. Guru was originally from Sopore, in the northern part of the Kashmir. The clashes following his execution came despite the fact that in the hours following the hanging the Kashmir valley was placed under strict curfew in the anticipation of trouble from separatist leaders, according to reports. Authorities in the Srinagar asked citizens to remain indoors. They also closed the national highway for one day.

Omar Abdullah, the Jammu and Kashmir chief minister, appealed for peace and calm.

“I understand there is certain degree of angst and there are some people who would like to take advantage of the situation,” Mr. Abdullah said. “I appeal to the people to allow us to get through this with peace and not to restore to violent protests.”

Congress Party officials said that the execution was a sign that India would not tolerate acts of terror.

“We have sent a message to the world that we cannot tolerate terrorism at any cost. Anybody committing any acts of terror will be punished,” said Rashid Alvi, a Congress Party spokesman. “People of our country and government have zero tolerance for terrorism.”

But the opposition Bharatiya Janta Party criticized the government’s delay in carrying out the execution.

“The attack on the Indian Parliament happened in 2001, that is 12 years ago, which was an attack on India,” said Ravi Shankar Prasad, the Bharatiya Janta Party spokesman.

On Nov. 21, 2012, India hanged Ajmal Kasab, the sole surviving gunman from the November 2008 terror attacks in Mumbai, ending an eight-year moratorium on the death penalty and drawing criticism from rights groups, which they reiterated Saturday.

“The hanging of Afzal Guru, following closely behind the hanging of Ajmal Kasab in November, shows a very worrying trend by the Indian government,” said Meenakshi Ganguly, South Asia director for Human Rights Watch. “Human Rights Watch opposes the death penalty in all circumstances as an inherently irreversible, inhumane punishment.”

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European Leaders Struggle to Bridge Budget Gaps

BRUSSELS — European Union leaders on Friday morning edged closer to agreeing a budget worth nearly €1 trillion, or $1.3 trillion, to support farming, transportation and other infrastructure, as well as big research projects for the 27-nation bloc.

But after 15 hours of talks, the leaders were still seeking unanimity while also attempting to satisfy the wide array of national interests demanding attention.

The budget is negotiated every seven years and involves furious horse-trading as leaders focus on getting the best deal for their own countries’ citizens, rather than emphasizing pan-European considerations.

The marathon session was the second attempt to reach a deal on the funding package, which should run from 2014 to 2020, after the first attempt collapsed in November.

Another failure to strike a deal on a sum of money that represents only about 1 percent of the Union’s Gross Domestic Product would be a severe embarrassment for the leaders, who already have spent years bickering over how to save the euro.

The European Commission, the bloc’s policymaking arm, had sought an increase in the overall budget of around 5 percent to more than €1 trillion.

Herman Van Rompuy, the president of the European Council, which represents E.U. leaders, pruned that sum to about €973 billion at the previous summit in November.

On Friday morning, Mr. Van Rompuy presented further revisions lowering the overall sum to about €960 billion but holding down the amount of cash governments pay up-front to around €908 billion.

That formula was designed, in part, to satisfy countries like Britain and the Netherlands that pay more into the budget than they receive, while also accommodating the demands of countries like France and Italy that want to maintain generous payments for agriculture and infrastructure.

Some of the deepest cuts would be made to pan-European projects to improve transport, energy, and digital services that are overseen by the commission. About €1 billion in cuts would be made to the part of the budget used to employ 55,000 people, including 6,000 translators, most of them in Brussels, who run the Union’s day-to-day affairs.

Expert national advisors were reviewing the proposals on Friday morning, and leaders were expected to reconvene for further talks.

Leaders also were wrestling over demands by some countries to renew a system of rebates that raises the costs for other countries.

One of the complications in the current round of negotiations has been the call for budgetary rigor from leaders like David Cameron, the British prime minister, who says the Union should tighten its belt at a time when many European governments have been compelled to impose stringent budget cuts.

Mr. Cameron, in particular, has earned the enmity of some European leaders by demanding a renegotiation of Britain’s treaty with the Union and promised a referendum on his nation’s membership in 2017.

Reflecting growing irritation with Britain among a number of European leaders, Martin Schulz, the president of the European Parliament, told a news conference late on Thursday night that leaders should not go out of their way to appease Mr. Cameron.

Because Britain could be outside the bloc by later this decade, there was little need to make concessions to Mr. Cameron that potentially jeopardized “the security of our financial planning,” Mr. Schulz suggested.

Mr. Van Rompuy, the president of the European Council, had intended to start the session during the mid-afternoon on Thursday to force leaders to make their complaints clear in a roundtable session rather than being allowed to break into small groups.

But his plan was derailed, and the first roundtable session was delayed until late in the evening, as leaders formed the kind of pre-summit huddles that he seemingly wanted to avoid.

President François Hollande of France was an hour late to a meeting during the afternoon with Mr. Cameron, Angela Merkel, the German chancellor, and Mr. Van Rompuy.

Mr. Hollande’s lateness was a sign of French displeasure with British demands that included strict limits on agriculture spending cherished by French farmers, according to an E.U. diplomat, who spoke on condition of anonymity because of the sensitivity of the talks.

Even if leaders eventually agree to a deal, it faces still more hurdles before it becomes law at the European Parliament, which has the power to veto the budget.

Some of the most influential figures in Parliament have already signaled that they are prepared to reject a budget that foresees spending less on Europe in the years ahead.

Guy Verhofstadt, the head of the alliance of liberals in the Parliament, called on Thursday for a full-revision clause to be inserted into the budget, so that it could be increased after three years if economic conditions improved.

Mr. Schulz, the president of the Parliament, said on Thursday that he would not approve a budget that ended up widening the overall gap between the amount of cash paid up-front by governments and the somewhat higher amounts known as commitments, which make up the overall budget.

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Well: Old Age and Motorcycles Are a Dangerous Mix

If you’re over 40 and planning to hop on a motorcycle, take care. Compared with younger riders, the odds of being seriously injured are high.

That is the message of a new study, published this week in the journal Injury Prevention, which found that older bikers are three times as likely to be severely injured in a crash as younger riders.

The percentage of older bikers on the road is quickly rising, and their involvement in accidents is a growing concern. Nationwide, from 1990 to 2003, the percentage of motorcyclists over age 50 soared from roughly 1 in 10 to about 1 in 4. At the same time, the average age of riders involved in motorcycle crashes has also been climbing. Injury rates among those 65 and older jumped 145 percent from 2000 to 2006 alone.

Because of the increase in motorcycle ridership among older Americans, the researchers, led by Tracy Jackson, a graduate student in the epidemiology department at Brown University, wanted a closer look at their injury patterns. So she and her colleagues combed through a federal database of motorcycle crashes that were serious enough to require emergency medical care. That yielded about 1.5 million incidents involving motorcyclists 20 or older from 2001 to 2008.

The researchers then split them into groups: those in their 20s and 30s, another group between 40 and 59, and those 60 and older.

Over all, the study showed that injury rates for all three groups were on the rise. But the rise was steepest for the oldest riders. Compared with the youngest motorcyclists, those who were 60 and older were two and a half times as likely to end up with serious injuries, and three times as likely to be admitted to a hospital. The riders who were middle age were twice as likely as their younger counterparts to be hospitalized.

For older riders, the consequences of a collision were also especially alarming. Older and middle-aged bikers were more likely to sustain fractures and dislocations, and they had a far greater chance of ending up with injuries to internal organs, including brain damage.

The researchers speculated that it was very likely that a number of factors played a role in older riders’ higher injury rates. For one, declines in vision and reaction time may make older riders more prone to mistakes that end up in collisions. Another theory is that older riders tend to ride bigger bikes, “which may be more likely to roll or turn over,” Ms. Jackson said.

Then there is the greater fragility that comes with age. Older riders may be involved in the same types of accidents as younger riders, Ms. Jackson said, but in some cases, a collision that a 20-year-old would walk away from might send a 65-year-old to the hospital.

“Your bones become more brittle, and you lose muscle mass as you get older,” she said. “It could just be a matter of aging and the body being less durable.”

Read More..

Well: Old Age and Motorcycles Are a Dangerous Mix

If you’re over 40 and planning to hop on a motorcycle, take care. Compared with younger riders, the odds of being seriously injured are high.

That is the message of a new study, published this week in the journal Injury Prevention, which found that older bikers are three times as likely to be severely injured in a crash as younger riders.

The percentage of older bikers on the road is quickly rising, and their involvement in accidents is a growing concern. Nationwide, from 1990 to 2003, the percentage of motorcyclists over age 50 soared from roughly 1 in 10 to about 1 in 4. At the same time, the average age of riders involved in motorcycle crashes has also been climbing. Injury rates among those 65 and older jumped 145 percent from 2000 to 2006 alone.

Because of the increase in motorcycle ridership among older Americans, the researchers, led by Tracy Jackson, a graduate student in the epidemiology department at Brown University, wanted a closer look at their injury patterns. So she and her colleagues combed through a federal database of motorcycle crashes that were serious enough to require emergency medical care. That yielded about 1.5 million incidents involving motorcyclists 20 or older from 2001 to 2008.

The researchers then split them into groups: those in their 20s and 30s, another group between 40 and 59, and those 60 and older.

Over all, the study showed that injury rates for all three groups were on the rise. But the rise was steepest for the oldest riders. Compared with the youngest motorcyclists, those who were 60 and older were two and a half times as likely to end up with serious injuries, and three times as likely to be admitted to a hospital. The riders who were middle age were twice as likely as their younger counterparts to be hospitalized.

For older riders, the consequences of a collision were also especially alarming. Older and middle-aged bikers were more likely to sustain fractures and dislocations, and they had a far greater chance of ending up with injuries to internal organs, including brain damage.

The researchers speculated that it was very likely that a number of factors played a role in older riders’ higher injury rates. For one, declines in vision and reaction time may make older riders more prone to mistakes that end up in collisions. Another theory is that older riders tend to ride bigger bikes, “which may be more likely to roll or turn over,” Ms. Jackson said.

Then there is the greater fragility that comes with age. Older riders may be involved in the same types of accidents as younger riders, Ms. Jackson said, but in some cases, a collision that a 20-year-old would walk away from might send a 65-year-old to the hospital.

“Your bones become more brittle, and you lose muscle mass as you get older,” she said. “It could just be a matter of aging and the body being less durable.”

Read More..

Hewlett-Packard Joins Push to Limit Use of Student Labor in China

Gilles Sabrie for The New York Times

A worker checks parts of a laptop on a Hewlett Packard assembly line in Chongqing, China.

HONG KONG — Hewlett-Packard, one of the world’s largest makers of computers and other electronics, is imposing new limits on the employment of students and temporary agency workers at factories across China. The move, following recent efforts by Apple to increase scrutiny of student workers, reflects a significant shift in how electronics companies view problematic labor practices in China.

Many factories in China have long relied on high school students, vocational school students and temporary workers to cope with periodic surges in orders as factory labor becomes increasingly scarce. Students complain of being ordered by school administrators to put in very long hours on short notice at jobs with no relevance to their studies; local governments sometimes order schools to provide labor, and the factories pay school administrators a bonus.

For much of the last decade, many of the world’s big electronics companies have largely neglected the problem, beyond in some cases tracking reports of the abuses. Apple made the unusual move last year of joining the Fair Labor Association, one of the largest workplace monitoring groups, which inspects factories in China that make computers, iPhones and other devices under contract from Apple. And last month, Apple said it would begin requiring suppliers to provide information about their student workers “so we can monitor this issue more carefully.”

Now H.P. is pushing even harder. Its rules, given to suppliers in China on Friday morning, say that all work must be voluntary, and that students and temporary workers must be free “to leave work at any time upon reasonable notice without negative repercussions, and they must have access to reliable and reprisal-free grievance mechanisms,” according to the company.

The rules also require that student work “must complement the primary area of study” — a restriction that could rule out huge numbers of students whose studies have nothing to do with electronics or manufacturing.

Enforcing workplace rules in China has always been difficult, as even Chinese laws on labor practices are flagrantly ignored by some manufacturers as they struggle to keep up with production demand amid labor shortages. The Chinese government announced last month that the nation’s labor force had begun to shrink slowly because of the increasingly rigorous one-child policy through the 1980s and 1990s.

But complying with the new rules might be easier for suppliers contracting with H.P., which has relatively steady demand through the year for its products, than for suppliers working for rivals like Apple, with its big bursts of sales when new models are introduced.

Howard Clabo, an H.P. spokesman, said that the company would hold training sessions for suppliers starting in March and also discussion sessions for government officials, nongovernment organizations and academics — an initiative that could put pressure on other companies.

Tony Prophet, H.P.’s senior vice president for worldwide supply chain operations, said in a phone interview that H.P. was also capping the combined number of students and temp workers at any supplier factory at no more than 20 percent of labor during peak periods, which tend to be during summer vacations and the lengthy Chinese New Year holiday. H.P. plans to reduce that to 10 percent, but has not decided when, Mr. Prophet said.

The practice of employing students and temporary workers has been at the center of growing criticism of employment practices at Chinese suppliers used by big international electronics companies. Some of the companies are now seeing that the problems can harm their reputations.

In announcing increased scrutiny of student workers last month, Apple said in its supplier responsibility report that the “cyclical nature” of the student work “makes it difficult to catch problems.”

“We’ve begun to partner with industry consultants to help our suppliers improve their policies, procedures and management of internship programs to go beyond what the law requires,” Apple said.

Mr. Prophet of H.P. presented his company’s new rules as a sign of corporate responsibility, as opposed to a competitive maneuver. “We’re doing this because we think this is an important issue, and there are certainly concerns around it and some ambiguity around the appropriate standards,” he said.

Labor activists have been particularly critical of Foxconn, a large Taiwanese contract manufacturer that produces electronic devices for Hewlett-Packard, Apple and other companies.

Keith Bradsher reported from Hong Kong and David Barboza from Shanghai. Xu Yan contributed research from Shanghai.

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Tunisians Prepare for Burial of Slain Opposition Leader

TUNIS — In a country quieted by the largest labor strike in decades, thousands of people started to gather early Friday for the funeral of Chokri Belaid, a leading opposition figure assassinated by unknown gunmen two days ago. 

The killing of Mr. Belaid, a human rights activist who had been a harsh critic of the ruling Islamist-led party, has led to fears that polarization and growing political violence will imperil Tunisia’s transition, often held up as a model in the region.

“We are steadfast, like mountains,” mourners chanted in the Jebel Jalloud neighborhood, where they gathered the rain in preparing to march to the city’s largest cemetery.  “We do not fear assassination.”

A steady stream of supporters also traveled to Mr. Belaid’s home, where a circle of flowers and other mementos marked the spot where he was killed, raising fears of a broader conflagration.

  “I’m afraid the country will descend into chaos,” said Nuzha ben Yayha, a mourner who came to pay her respects.

The country’s labor federation called the first general strike in more than three decades for Friday to coincide with the burial, adding to a combustible mix of passions just two years after the overthrow of President Zine el Abidine Ben Ali in early 2011 signaled the beginning of the Arab revolts sweeping the region.

The official TAP news agency said the national Army had been ordered to “secure” Mr. Belaid’s funeral “and ensure the protection of participants” while the trade union federation had called for a “peaceful” general strike “in order not to serve the objectives of Tunisia’s enemies who had planned Chokri Belaid’s assassination.”

The embassy of France, the former colonial power, said on its Web site that it would close its schools in the capital on Friday and Saturday for fear of renewed outbursts of violence.

On Thursday, protesters clashed with riot police officers in several cities. In Tunis, shuttered stores, tear gas and running street battles recreated the atmosphere of that uprising against former President Ben Ali but with none of the hope. Instead, many worried about a growing instability following the killing.

Adding to the uncertainties, Tunisia’s governing Islamist-led party on Thursday rejected a proposal by the prime minister to form a national unity government.

The announcement by the party, Ennahda, revealed growing strains within a movement that has promoted its blend of Islamist politics and pluralism as a model for the region. As it rejected the proposal by the prime minister, Hamadi Jebali, a member of Ennahda, the group also publicly rebuked one of its most senior leaders and rejected his efforts to calm the political crisis.

“The prime minister did not ask the opinion of his party,” Abdelhamid Jelassi, Ennahda’s vice president, said in a statement reported on the party’s Web site that rejected the proposal to replace the government with technocrats not affiliated with any party. “We in Ennahda believe Tunisia needs a political government now. We will continue discussions with other parties about forming a coalition government.”

The troubles in Tunisia unsettled the region and endangered a country that was credited with avoiding the chaos plaguing some its neighbors. In the same way some had held up Tunisia’s transition as an example, politicians in the region studied Mr. Belaid’s assassination and saw a broader warning.

Mr. Belaid’s death was seen as a blow to the country’s turbulent transition, raising the possibility that the political violence in Tunisia had reached a dangerous new level.

In the southern mining city of Gafsa, riots broke out and the police fired tear gas at demonstrators who threw stones, a local radio station reported. The city is known as a powerful base of support for Mr. Belaid, who was a fierce advocate for the miners.

A regional headquarters of Ennahda was burned down in the town of Siliana, according to local news media, one of more than a dozen party offices attacked by protesters in the last two days.

In one of the most disturbing aspects of the situation, Mr. Belaid had himself warned just before his death about Tunisia’s troubling turn toward violence and called for a national dialogue to combat it. He took special aim at Ennahda, accusing the Islamist group of turning a blind eye to crimes perpetrated by hard-line Islamists known as Salafis, including attacking Sufi shrines and liquor stores.

There have been no arrests in the killing, and no suspect has been identified. The governing party has condemned the assassination. Anxiety about the assassination reverberated in Egypt, where political feuds have been eclipsed by street clashes between protesters and the riot police. Security officials said plainclothes guards had been assigned to guard the homes of prominent opponents of Egypt’s Islamist-dominated government. The worries were amplified because of a fatwa issued by a hard-line Egyptian cleric saying that opponents of President Mohamed Morsi should be killed. The fatwa specifically mentioned Mohamed ElBaradei, a former United Nations diplomat and leader of Egypt’s largest secular-leaning opposition bloc, which led him to request the protection.

“Regime silent as another fatwa gives license to kill opposition in the name of Islam,” Mr. ElBaradei wrote in a Twitter message. “Religion yet again used and abused.”

On Thursday, Mr. Morsi addressed the issue in a speech, saying that political violence “has become one of the most important challenges that face the Arab Spring revolutions.”

In what seemed to be a direct challenge to religious hard-liners — as well as an attempt to avoid the criticism directed at Ennahda — he condemned those “who claim to speak for religion” and who “permit killing based on political differences.”

“This is terrorism itself,” he said.

Kareem Fahim reported from Tunis, David D. Kirkpatrick from Antakya, Turkey, and Alan Cowell from Paris. Monica Marks contributed reporting from Tunis, and Rick Gladstone from New York.

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Profound Weight of Layoffs Seen in Survey

Layoffs have touched nearly every American household in some fashion over the last few years, according to new survey data to be released Thursday by the John J. Heldrich Center for Workforce Development at Rutgers University.

Joe Raedle/Getty Images

Lissette Marquez, center, and Amiel Ali looked for jobs last week in Miami with the help of a South Florida Workforce customer service representative, Nelson Munoz, left.

While about 8 percent of Americans are unemployed, nearly a quarter of Americans say they were laid off at some point during the recession or afterward, according to the survey. More broadly, nearly eight in 10 say they know someone in their circle of family and friends who has lost a job.

“This to me is why the recession was so all-consuming and is likely to influence the American psyche,” said Cliff Zukin, a public policy and political science professor at Rutgers and co-author of the report. “Almost everyone, four out of five, were directly or one step removed from unemployment and all that goes with it financially, socially, psychologically.”

The survey presented a bleak view of the economic future.

A majority of Americans say they think it will be at least six years before the economy is made whole again, if ever. Three in 10 said the economy would never fully recover from the Great Recession.

“Despite significant improvements in the nation’s labor market, American workers’ concerns about unemployment, the job market, job security and the future of the economy have not changed much since we conducted a similar survey in August 2010,” the report said.

Just a third of Americans surveyed in this poll, conducted from Jan. 9-16, said they thought the economy would be better next year, the same share that said so two years earlier.

Of those laid off in recent years, nearly a quarter said they still had not found a job. Re-employment rates for older workers have been particularly bad, with nearly two-thirds of unemployed people 55 and older saying they actively sought a job for more than a year before finding one or had still not found work.

Not surprisingly, those who are unemployed are especially downbeat about many economic issues in addition to their own finances. Of those who were jobless and looking for work, 31 percent said their jobless benefits had run out and 58 percent said they were concerned their benefits would run out before they found work.

Of those who have found work, nearly half say their current job is a step down from the one they lost, and a slim majority say they earn less than they did in their previous job. A quarter of those re-employed said they thought that the hit to their standard of living would be permanent.

The reliance on one’s personal network and savings rather than the social safety net showed up frequently in the survey data.

More people reported borrowing money from friends and family than reported using food stamps. A third cut back on doctors’ visits or medical treatment. A quarter of the unemployed said they had enrolled in retraining programs of some kind; half of them reported paying for the education on their own or through family assistance. Twenty-three percent received some type of government financing for their training programs.

Unemployed workers were more likely than employed workers to say that the government is primarily responsible for helping the jobless. But even then, a majority of the unemployed thought that workers and employers were more responsible for getting people back to work than the government was.

Americans over all were also somewhat less critical of bankers this time than they were two years earlier. About one in three (35 percent) respondents attributed high unemployment levels to the actions of Wall Street, compared with 45 percent in 2010.

Americans were most likely to attribute high unemployment to cheap foreign labor. Four in 10 also said they believed illegal immigrants were taking Americans’ job opportunities — which does not bode well for political support for an amnesty program now being discussed in Washington.

Most people surveyed lost at least some of their savings. Asked about their financial health, six in 10 Americans said their finances would not improve in the next few years; just 16 percent said their family finances were already back to prerecession levels or suffered no loss in the first place.

More educated, better-off people were substantially more likely to report being as financially secure as they were before the recession began.

Responses are based on an online survey conducted by GfK using a nationally representative sample of 1,090 adults. The margin of sampling error is plus or minus three percentage points.

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Well: Think Like a Doctor: A Confused and Terrified Patient

The Challenge: Can you solve the mystery of a middle-aged man recovering from a serious illness who suddenly becomes frightened and confused?

Every month the Diagnosis column of The New York Times Magazine asks Well readers to sift through a difficult case and solve a diagnostic riddle. Below you will find a summary of a case involving a 55-year-old man well on his way to recovering from a series of illnesses when he suddenly becomes confused and paranoid. I will provide you with the main medical notes, labs and imaging results available to the doctor who made the diagnosis.

The first reader to figure out this case will get a signed copy of my book, “Every Patient Tells a Story,” along with the satisfaction of knowing you solved a case of Sherlockian complexity. Good luck.

The Presenting Problem:

A 55-year-old man who is recovering from a devastating injury in a rehabilitation facility suddenly becomes confused, frightened and paranoid.

The Patient’s Story:

The patient, who was recovering from a terrible injury and was too weak to walk, had been found on the floor of his room at the extended care facility, raving that there were people out to get him. He was taken to the emergency room at the Waterbury Hospital in Connecticut, where he was diagnosed with a urinary tract infection and admitted to the hospital for treatment. Doctors thought his delirium was caused by the infection, but after 24 hours, despite receiving the appropriate antibiotics, the patient remained disoriented and frightened.

A Sister’s Visit:

The man’s sister came to visit him on his second day in the hospital. As she walked into the room she was immediately struck by her brother’s distress.

“Get me out of here!” the man shouted from his hospital bed. “They are coming to get me. I gotta get out of here!”

His blue eyes darted from side to side as if searching for his would-be attackers. His arms and legs shook with fear. He looked terrified.

For the past few months, the man had been in and out of the hospital, but he had been getting better — at least he had been improving the last time his sister saw him, the week before. She hurried into the bustling hallway and found a nurse. “What the hell is going on with my brother?” she demanded.

A Long Series of Illnesses:

Three months earlier, the patient had been admitted to that same hospital with delirium tremens. After years of alcohol abuse, he had suddenly stopped drinking a couple of days before, and his body was wracked by the sudden loss of the chemical he had become addicted to. He’d spent an entire week in the hospital but finally recovered. He was sent home, but he didn’t stay there for long.

The following week, when his sister hadn’t heard from him for a couple of days, she forced her way into his home. There she found him, unconscious, in the basement, at the bottom of his staircase. He had fallen, and it looked as if he may have been there for two, possibly three, days. He was close to death. Indeed, in the ambulance on the way to the hospital, his heart had stopped. Rapid action by the E.M.T.’s brought his heart back to life, and he made it to the hospital.

There the extent of the damage became clear. The man’s kidneys had stopped working, and his body chemistry was completely out of whack. He had a severe concussion. And he’d had a heart attack.

He remained in the intensive care unit for nearly three weeks, and in the hospital another two weeks. Even after these weeks of care and recovery, the toll of his injury was terrible. His kidneys were not working, so he required dialysis three times a week. He had needed a machine to help him breathe for so long that he now had to get oxygen through a hole that had been cut into his throat. His arms and legs were so weak that he could not even lift them, and because he was unable even to swallow, he had to be fed through a tube that went directly into his stomach.

Finally, after five weeks in the hospital, he was well enough to be moved to a short-term rehabilitation hospital to complete the long road to recovery. But he was still far from healthy. The laughing, swaggering, Harley-riding man his sister had known until that terrible fall seemed a distant memory, though she saw that he was slowly getting better. He had even started to smile and make jokes. He was confident, he had told her, that with a lot of hard work he could get back to normal. So was she; she knew he was tough.

Back to the Hospital:

The patient had been at the rehab facility for just over two weeks when the staff noticed a sudden change in him. He had stopped smiling and was no longer making jokes. Instead, he talked about people that no one else could see. And he was worried that they wanted to harm him. When he remained confused for a second day, they sent him to the emergency room.

You can see the records from that E.R. visit here.

The man told the E.R. doctor that he knew he was having hallucinations. He thought they had started when he had begun taking a pill to help him sleep a couple of days earlier. It seemed a reasonable explanation, since the medication was known to cause delirium in some people. The hospital psychiatrist took him off that medication and sent him back to rehab that evening with a different sleeping pill.

Back to the Hospital, Again:

Two days later, the patient was back in the emergency room. He was still seeing things that weren’t there, but now he was quite confused as well. He knew his name but couldn’t remember what day or month it was, or even what year. And he had no idea where he was, or where he had just come from.

When the medical team saw the patient after he had been admitted, he was unable to provide any useful medical history. His medical records outlined his earlier hospitalizations, and records from the nursing home filled in additional details. The patient had a history of high blood pressure, depression and alcoholism. He was on a long list of medications. And he had been confused for the past several days.

On examination, he had no fever, although a couple of hours earlier his temperature had been 100.0 degrees. His heart was racing, and his blood pressure was sky high. His arms and legs were weak and swollen. His legs were shaking, and his reflexes were very brisk. Indeed, when his ankle was flexed suddenly, it continued to jerk back and forth on its own three or four times before stopping, a phenomenon known as clonus.

His labs were unchanged from the previous visit except for his urine, which showed signs of a serious infection. A CT scan of the brain was unremarkable, as was a chest X-ray. He was started on an intravenous antibiotic to treat the infection. The thinking was that perhaps the infection was causing the patient’s confusion.

You can see the notes from that second hospital visit here.

His sister had come to visit him the next day, when he was as confused as he had ever been. He was now trembling all over and looked scared to death, terrified. He was certain he was being pursued.

That is when she confronted the nurse, demanding to know what was going on with her brother. The nurse didn’t know. No one did. His urinary tract infection was being treated with antibiotics, but he continued to have a rapid heart rate and elevated blood pressure, along with terrifying hallucinations.

Solving the Mystery:

Can you figure out why this man was so confused and tremulous? I have provided you with all the data available to the doctor who made the diagnosis. The case is not easy — that is why it is here. I’ll post the answer on Friday.

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Rules and Regulations: Post your questions and diagnosis in the comments section below.. The correct answer will appear Friday on Well. The winner will be contacted. Reader comments may also appear in a coming issue of The New York Times Magazine.

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Bits Blog: Apple's iPad Dominated PC Market During Holiday Season

The iPad is defined as a tablet, but you might as well call it a personal computer. Over the holiday season, about one in six people buying computers around the world bought Apple’s tablet, according to research from Canalys.

The report, released Wednesday, said that when tablets were included, worldwide PC shipments over the fourth quarter increased 12 percent compared with the previous year. Apple led the computer market with 22.9 million iPads and 4.1 million Macs sold. Hewlett-Packard was in a distant second place with 15 million PCs shipped, and Lenovo shipped about 14.8 million computers.

Amazon and Samsung are quickly gaining traction in the computer market with their tablets. Amazon shipped 4.6 million tablets, including its Kindle Fire, over the quarter, and Samsung shipped 7.6 million. Over all, tablet shipments accounted for about one-third of the PC market over the quarter.

IDC, the research firm, reported similar numbers on PC shipments over the fourth quarter, but did not include tablets in its analysis.

Typically research firms don’t count tablets as a PC, because they are quite different from traditional laptops and desktops. But when sales of these two categories are stacked side by side, the numbers give perspective for how quickly the tablet is dissolving the old-school PC.

The Canalys report certainly makes the late Steve Jobs sound prescient. When he introduced the iPad 2 in 2011, he said tablet devices were ushering people into a “post-PC” era:

A lot of folks in this tablet market are rushing in and they’re looking at this as the next PC. The hardware and the software are done by different companies. And they’re talking about speeds and feeds just like they did with PCs.

And our experience and every bone in our body says that that is not the right approach to this. That these are post-PC devices that need to be even easier to use than a PC. That need to be even more intuitive than a PC. And where the software and the hardware and the applications need to intertwine in an even more seamless way than they do on a PC.

It appears that era has already arrived.

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This post has been revised to reflect the following correction:

Correction: February 6, 2013

An earlier version of this post incorrectly stated the number of iPads sold in the fourth quarter of 2012. Apple sold 22.9 million iPads during that period, not 27 million.

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Dominant Tunisian Party Rejects Move to Contain Assassination Fallout

Anis Mili/Reuters

Tunisian protesters clashed with the riot police during a demonstration after the death of Mr. Belaid outside the Interior ministry in Tunis on Wednesday.

TUNIS — Tunisian officials moved quickly Wednesday to contain the fallout after a leading opposition figure was assassinated outside his home. They announced that they would restructure the Islamist-led government and form a national unity cabinet as thousands took to the streets in protests that security forces beat back with tear gas.

But Reuters reported on Thursday that the country’s dominant Ennahda party had rejected the plan to to dissolve the government, as proposed Wednesday by Prime Minister Hamadi Jebali.

“The prime minister did not ask the opinion of his party," Abdelhamid Jelassi, Ennahda’s vice-president was quoted as saying. “We in Ennahda believe Tunisia needs a political government now. We will continue discussions with others parties about forming a coalition government.”

The reported rejection — which was not immediately confirmed — appeared to inject a new element of political uncertainty into an already fraught situation.

The killing of the politician, Chokri Belaid, one of Tunisia’s best-known human rights defenders and a fierce critic of the ruling Islamist party, placed dangerous new strains on a society struggling to reconcile its identity as a long-vaunted bastion of Arab secularism with its new role as a proving ground for one of the region’s ascendant Islamist parties.

The explosion of popular anger, which led to the death of a police officer in the capital, posed a severe challenge to Ennahda, which came to power promising a model government that blended Islamist principles with tolerant pluralism.

Mr. Belaid was shot and killed outside his home in an upscale Tunis neighborhood as he was getting into his car on Wednesday morning. The interior minister, citing witnesses, said that two unidentified gunmen had fired on Mr. Belaid, striking him with four bullets.

The killing, which analysts said was the first confirmed political assassination here since the overthrow of the autocratic leader, Zine el-Abidine Ben Ali, was a dark turn for the country that was the birthplace of the Arab uprisings of two years ago. It resonated in countries like Egypt and Libya that are struggling to contain political violence while looking to Tunisia’s turbulent but hopeful transition as a reassuring example.

“Confronting violence, radicalism and the forces of darkness is the main priority for societies if they want freedom and democracy,” Amr Hamzawy, a member of Egypt’s main secular opposition coalition, wrote on Twitter on Wednesday. “Assassinating Chokri Belaid is warning bell in Tunisia, and in Egypt too.”

The response by Tunisian officials was being closely watched. President Moncef Marzouki cut short an overseas trip to deal with the crisis. Mr. Jebali, the prime minister, called the killing a “heinous crime against the Tunisian people, against the principles of the revolution and the values of tolerance and acceptance of the other.”

Bowing to the outrage, he said cabinet ministers would be replaced with technocrats not tied to any party until elections can be held.

The announcement, which had been expected for months, held out the promise that Tunisia might continue to avoid the political chaos that has plagued its neighbors. Since the uprising, the country has held successful elections, leading to a coalition government merging Ennahda and two center-left parties. An assembly writing the country’s constitution has circumscribed the role of Islamic law, allowing Tunisia to avoid the arguments over basic legal matters that have led to protracted unrest in Egypt.

The struggle over identity here has taken a different form, as hard-line Islamists have pressured Ennhada to take a more conservative path. Secular groups have faulted Ennahda for failing to confront the hard-liners, or for secretly supporting them. The restructuring does not completely loosen Ennahda’s hold on political power.

The killing remained a mystery on Wednesday. The authorities did not announce any arrests, saying only that witnesses said the gunmen had appeared to be no more than 30 years old. Among Mr. Belaid’s colleagues and relatives, suspicions immediately fell on the hard-line Islamists known as Salafists, some of whom have marred the transition with acts of violence, including attacks on liquor stores and Sufi mausoleums.

Monica Marks reported from Tunis, and Kareem Fahim from Cairo. Reporting was contributed by Alan Cowell from Paris, Gerry Mullany from Hong Kong, Mayy El Sheikh from Cairo, David D. Kirkpatrick from Antakya, Turkey, and Brian Knowlton from Washington.

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DealBook: Liberty Global Reaches Deal for Virgin Media

8:07 p.m. | Updated

LONDON – Liberty Global, the international cable company owned by the American billionaire John C. Malone, agreed on Tuesday to buy the British cable company Virgin Media for about $16 billion.

The deal gives Liberty Global access to Europe’s largest cable market, and pits Mr. Malone against Rupert Murdoch, his longtime rival and biggest shareholder in Britain’s largest pay-TV provider British Sky Broadcasting.

Under the terms of the deal, Liberty Global said it had offered a package of cash and stock that it valued at $47.87 for each share in Virgin Media, a 24 percent premium over Virgin Media’s closing price on Monday.

The takeover ranks as one of the 10 largest cable deals of all time, according to figures from the data provider Thomson Reuters.

“Virgin Media will add significant scale and a first-class management team in Europe’s largest and most dynamic media and communications market,” Mike Fries, Liberty Global’s president and chief executive, said in a statement.

“After the deal, roughly 80 percent of Liberty Global’s revenue will come from just five attractive and strong countries — the U.K., Germany, Belgium, Switzerland and the Netherlands.”

News of the talks, confirmed earlier in the day in a statement by Virgin Media, came amid heightened merger and acquisition activity in the European television business. As European broadcasters suffer from stagnant or falling advertising revenue, American media conglomerates, looking to expand their international presence, are playing a significant role.

Mr. Malone and Mr. Murdoch have gone head-to-head before. From 2004 to 2006, they fought for control of DirecTV, the American satellite television provider.

The clash ended with Mr. Malone yielding a stake that he had built up in News Corporation. But the Liberty Group, which has operations in 13 countries, completed its purchase of a controlling stake in DirecTV from News Corporation in a cash-and-equity deal worth roughly $11 billion.

In recent years, Liberty Global has been expanding its presence in Europe and has operations from Ireland to Romania, though it failed last month in its bid to acquire the Telenet Group of Belgium for $2.7 billion. Liberty Global owns a 58 percent stake in Telenet.

Since early 2010, Liberty has bought two German rivals to build its operations in Europe’s largest economy.

In response, News Corporation has been expanding its global cable business, including the $2.1 billion acquisition of Consolidated Media, the Australian pay-television company, late last year.

Since the beginning of the financial crisis, Virgin Media, whose commercials feature the Olympic sprinting star Usain Bolt, has announced job cuts and invested in its broadband structure to reduce costs and increase its market share in Britain’s competitive cable market.

The company’s market capitalization stands at more than $10 billion. Including debt, its enterprise value is around $19.4 billion, according Thomson Reuters. Shares of Virgin Media, which are primarily traded on the Nasdaq, were up nearly 18 percent to $45.61 on the news of the Liberty talks.

Virgin’s shares have jumped almost 90 percent in the last 12 months, as more consumers sign up for so-called bundled services, including Internet and cellphone contracts. Virgin Media will announce its earnings on Wednesday.

Analysts warned that it would be difficult for Liberty Global to make additional savings between its current European operations and those of Virgin Media because Liberty does not have a business in Britain.

They said Liberty waited to make its move until Virgin made several upgrades to its network and restructured its debt. While Virgin has been gaining market share, it has 4.9 million customers, or roughly half the number of subscribers as its larger rival, BSkyB, according to filings by the companies.

The British billionaire Richard Branson, whose Virgin brand is used for a variety of products and services, including airlines and banks, owns less than 3 percent of Virgin Media.

News of the talks also came amid heightened merger and acquisition activity in the European television business. In December, Discovery Communications agreed to pay $1.7 billion for the Scandinavian operations of a large German commercial television company.

According to news reports this week, the majority owners of the German company are considering a sale. American media companies, including Time Warner, have been mentioned as potential buyers.

Analysts say the flurry of activity is driven by a desire among pay-television companies and broadcasters to diversify revenue sources that are coming under increased pressure. So broadcasters are setting up pay-television channels, and cable and satellite companies are looking to new content delivery platforms, like the Internet.

While commercial broadcasters remain powerful in Germany, Britain is the most lucrative pay-television market in Europe, according to Screen Digest, a research firm.

The deal for Virgin Media is expected to close during the second quarter of this year.

LionTree Advisors, Credit Suisse and the law firms Shearman & Sterling and Ropes & Gray advised Liberty Global, while Goldman Sachs, JPMorgan Chase and the law firms Fried Frank and Milbank advised Virgin Media.

Mark Scott reported from London, and Eric Pfanner from Paris.

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This post has been revised to reflect the following correction:

Correction: February 5, 2013

Because of an editing error, an earlier version of this article misstated the first name of the leader of News Corporation. He is Rupert Murdoch, not Richard.

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Ipswich Journal: Paul Mason Is One-Third the Man He Used to Be

Paul Nixon Photography

Paul Mason in 2012, two years after gastric bypass surgery stripped him of the unofficial title of “the world’s fattest man.”

IPSWICH, England — Who knows what the worst moment was for Paul Mason — there were so many awful milestones, as he grew fatter and fatter — but a good bet might be when he became too vast to leave his room. To get him to the hospital for a hernia operation, the local fire department had to knock down a wall and extricate him with a forklift.

That was nearly a decade ago, when Mr. Mason weighed about 980 pounds, and the spectacle made him the object of fascinated horror, a freak-show exhibit. The British news media, which likes a superlative, appointed him “the world’s fattest man.”

Now the narrative has shifted to one of redemption and second chances. Since a gastric bypass operation in 2010, Mr. Mason, 52 years old and 6-foot-4, has lost nearly two-thirds of his body weight, putting him at about 336 pounds — still obese, but within the realm of plausibility. He is talking about starting a jewelry business.

“My meals are a lot different now than they used to be,” Mr. Mason said during a recent interview in his one-story apartment in a cheerful public housing complex here. For one thing, he no longer eats around the clock. “Food is a necessity, but now I don’t let it control my life anymore,” he said.

But the road to a new life is uphill and paved with sharp objects. When he answered the door, Mr. Mason did not walk; he glided in an electric wheelchair.

And though Mr. Mason looks perfectly normal from the chest up, horrible vestiges of his past stick to him, literally, in the form of a huge mass of loose skin choking him like a straitjacket. Folds and folds of it encircle his torso and sit on his lap, like an unwanted package someone has set there; more folds encase his legs. All told, he reckons, the excess weighs more than 100 pounds.

As he waits to see if anyone will agree to perform the complex operation to remove the skin, Mr. Mason has plenty of time to ponder how he got to where he is. He was born in Ipswich and had a childhood marked by two things, he says: the verbal and physical abuse of his father, a military policeman turned security guard; and three years of sexual abuse, starting when he was 6, by a relative in her 20s who lived in the house and shared his bed. He told no one until decades later.

After he left school, Mr. Mason took a job as a postal worker and became engaged to a woman more than 20 years older than him. “I thought it would be for life, but she just turned around one day and said, ‘No, I don’t want to see you anymore — goodbye,’ ” he said.

His father died, and he returned home to care for his arthritic mother, who was in a wheelchair. “I still had all these things going around in my head from my childhood,” he said. “Food replaced the love I didn’t get from my parents.” When he left the Royal Mail in 1986, he said, he weighed 364 pounds.

Then things spun out of control. Mr. Mason tried to eat himself into oblivion. He spent every available penny of his and his mother’s social security checks on food. He stopped paying the mortgage. The bank repossessed their house, and the council found them a smaller place to live. All the while, he ate the way a locust eats — indiscriminately, voraciously, ingesting perhaps 20,000 calories a day. First he could no longer manage the stairs; then he could no longer get out of his room. He stayed in bed, on and off, for most of the last decade.

Social service workers did everything for him, including changing his incontinence pads. A network of local convenience stores and fast-food restaurants kept the food coming nonstop — burgers, french fries, fish and chips, even about $22 worth of chocolate bars a day.

“They didn’t deliver bags of crisps,” he said of potato chips. “They delivered cartons.”

His life became a cycle: eat, doze, eat, eat, eat. “You didn’t sleep a normal sleep,” he said. “You’d be awake most of the night eating and snacking. You totally forgot about everything else. You lose all your dignity, all your self-respect. It all goes, and all you focus on is getting your next fix.”

He added, “It was quite a lonely time, really.”

He got infections a lot and was transported to the hospital — first in a laundry van, then on the back of a truck and finally on the forklift. For 18 months after a hernia operation in 2003, he lived in the hospital and in an old people’s home — where he was not allowed to leave his room — while the local government found him a house that could accommodate all the special equipment he needed.

This article has been revised to reflect the following correction:

Correction: February 6, 2013

The headline on an earlier version of this article misstated Paul Mason’s current weight relative to what he weighed nearly a decade ago. He is now about one-third, not two-thirds, the weight he was then.

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Ipswich Journal: Paul Mason Is One-Third the Man He Used to Be

Paul Nixon Photography

Paul Mason in 2012, two years after gastric bypass surgery stripped him of the unofficial title of “the world’s fattest man.”

IPSWICH, England — Who knows what the worst moment was for Paul Mason — there were so many awful milestones, as he grew fatter and fatter — but a good bet might be when he became too vast to leave his room. To get him to the hospital for a hernia operation, the local fire department had to knock down a wall and extricate him with a forklift.

That was nearly a decade ago, when Mr. Mason weighed about 980 pounds, and the spectacle made him the object of fascinated horror, a freak-show exhibit. The British news media, which likes a superlative, appointed him “the world’s fattest man.”

Now the narrative has shifted to one of redemption and second chances. Since a gastric bypass operation in 2010, Mr. Mason, 52 years old and 6-foot-4, has lost nearly two-thirds of his body weight, putting him at about 336 pounds — still obese, but within the realm of plausibility. He is talking about starting a jewelry business.

“My meals are a lot different now than they used to be,” Mr. Mason said during a recent interview in his one-story apartment in a cheerful public housing complex here. For one thing, he no longer eats around the clock. “Food is a necessity, but now I don’t let it control my life anymore,” he said.

But the road to a new life is uphill and paved with sharp objects. When he answered the door, Mr. Mason did not walk; he glided in an electric wheelchair.

And though Mr. Mason looks perfectly normal from the chest up, horrible vestiges of his past stick to him, literally, in the form of a huge mass of loose skin choking him like a straitjacket. Folds and folds of it encircle his torso and sit on his lap, like an unwanted package someone has set there; more folds encase his legs. All told, he reckons, the excess weighs more than 100 pounds.

As he waits to see if anyone will agree to perform the complex operation to remove the skin, Mr. Mason has plenty of time to ponder how he got to where he is. He was born in Ipswich and had a childhood marked by two things, he says: the verbal and physical abuse of his father, a military policeman turned security guard; and three years of sexual abuse, starting when he was 6, by a relative in her 20s who lived in the house and shared his bed. He told no one until decades later.

After he left school, Mr. Mason took a job as a postal worker and became engaged to a woman more than 20 years older than him. “I thought it would be for life, but she just turned around one day and said, ‘No, I don’t want to see you anymore — goodbye,’ ” he said.

His father died, and he returned home to care for his arthritic mother, who was in a wheelchair. “I still had all these things going around in my head from my childhood,” he said. “Food replaced the love I didn’t get from my parents.” When he left the Royal Mail in 1986, he said, he weighed 364 pounds.

Then things spun out of control. Mr. Mason tried to eat himself into oblivion. He spent every available penny of his and his mother’s social security checks on food. He stopped paying the mortgage. The bank repossessed their house, and the council found them a smaller place to live. All the while, he ate the way a locust eats — indiscriminately, voraciously, ingesting perhaps 20,000 calories a day. First he could no longer manage the stairs; then he could no longer get out of his room. He stayed in bed, on and off, for most of the last decade.

Social service workers did everything for him, including changing his incontinence pads. A network of local convenience stores and fast-food restaurants kept the food coming nonstop — burgers, french fries, fish and chips, even about $22 worth of chocolate bars a day.

“They didn’t deliver bags of crisps,” he said of potato chips. “They delivered cartons.”

His life became a cycle: eat, doze, eat, eat, eat. “You didn’t sleep a normal sleep,” he said. “You’d be awake most of the night eating and snacking. You totally forgot about everything else. You lose all your dignity, all your self-respect. It all goes, and all you focus on is getting your next fix.”

He added, “It was quite a lonely time, really.”

He got infections a lot and was transported to the hospital — first in a laundry van, then on the back of a truck and finally on the forklift. For 18 months after a hernia operation in 2003, he lived in the hospital and in an old people’s home — where he was not allowed to leave his room — while the local government found him a house that could accommodate all the special equipment he needed.

This article has been revised to reflect the following correction:

Correction: February 6, 2013

The headline on an earlier version of this article misstated Paul Mason’s current weight relative to what he weighed nearly a decade ago. He is now about one-third, not two-thirds, the weight he was then.

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