Business Briefing | Retailing: Best Buy Shares Rally on Improved Holiday Sales

The Best Buy Company had better-than-expected holiday sales, setting off a gain of $2, or 16.4 percent, in its stock price, to $14.21 a share on Friday. The holiday quarter accounted for about a third of Best Buy’s revenue last year. The chain said that revenue at stores open at least a year fell 1.4 percent for the nine weeks ended Jan. 5. The company’s performance in the United States was flat. The chief executive, Hubert Joly, said in a statement that the result was better than the last several quarters. A Morningstar analyst, R. J. Hottovy, said the results showed that some of Best Buy’s initiatives, like more employee training and online price matching helped increase sales.

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Former Lab Technician Denies Faulty DNA Work in Rape Cases

A former New York City laboratory technician whose work on rape cases is now being scrutinized for serious mistakes said on Friday that she had been unaware there were problems in her work and, disputing an earlier report, denied she had resigned under pressure.

The former lab technician, Serrita Mitchell, said any problems must have been someone else’s.

“My work?” Ms. Mitchell said. “No, no, no, not my work.”

Earlier, the city medical examiner’s office, where Ms. Mitchell said she was employed from 2000 to 2011, said it was reviewing 843 rape cases handled by a lab technician who might have missed critical evidence.

So far, it has finished looking over about half the cases, and found 26 in which the technician had missed biological evidence and 19 in which evidence was commingled with evidence from other cases. In seven cases where evidence was missed, the medical examiner’s office was able to extract a DNA profile, raising the possibility that detectives could have caught some suspects sooner.

The office declined to identify the technician. Documents said she quit in November 2011 after the office moved to fire her, once supervisors had begun to discover deficiencies in her work. A city official who declined to be identified said Ms. Mitchell was the technician.

However, Ms. Mitchell, reached at her home in the Bronx on Friday, said she had never been told there were problems. “It couldn’t be me because your work gets checked,” she said. “You have supervisors.”

She also said that she had resigned because of a rotator cuff injury that impeded her movement. “I loved the job so much that I stayed a little longer,” she said, explaining that she had not expected to stay with the medical examiner’s office so long. “Then it was time to leave.”

Also on Friday, the Legal Aid Society, which provides criminal defense lawyers for most of the city’s poor defendants, said it was demanding that the city turn over information about the cases under review.

If needed, Legal Aid will sue the city to gain access to identifying information about the cases, its chief lawyer, Steven Banks, said, noting that New York was one of only 14 states that did not require routine disclosure of criminal evidence before trial.

Disclosure of the faulty examination of the evidence is prompting questions about outside review of the medical examiner’s office. The City Council on Friday announced plans for an emergency oversight committee, and its members spoke with outrage about the likelihood that missed semen stains and “false negatives” might have enabled rapists to go unpunished.

“The mishandling of rape cases is making double victims of women who have already suffered an indescribably horrific event,” said Christine C. Quinn, the Council speaker.

A few more details emerged Friday about a 2001 case involving the rape of a minor in Brooklyn, in which the technician missed biological evidence, the review found. The victim accused an 18-year-old acquaintance of forcing himself on her, and he was questioned by the police but not charged, according to a law enforcement official.

Unrelated to the rape, he pleaded guilty in 2005 to third-degree robbery and served two years in prison. The DNA sample he gave in the robbery case was matched with the one belatedly developed from evidence the technician had overlooked in the 2001 rape, law enforcement officials said. He was recently indicted in the 2001 rape.

Especially alarming to defense lawyers was the possibility that DNA samples were cross-contaminated and led to false convictions, or could do so in the future.

“Up to this point,” Mr. Banks said, “they have not made information available to us, as the primary defender in New York City, to determine whether there’s an injustice that’s been done in past cases, pending cases, or allowing us to be on the lookout in future cases.” He added, “If it could happen with one analyst, how does anyone know that it stops there?”

The medical examiner’s office has said that the risk of cross-contamination was extremely low and that it does not appear that anyone was wrongly convicted in the cases that have been reviewed so far. And officials in at least two of the city’s district attorneys’ offices — for Brooklyn and Manhattan — said they had not found any erroneous convictions.

But Mr. Banks said the authorities needed to do more, and that their statements thus far were the equivalent of “trust us.”

“Given what’s happened,” he said, “that’s cold comfort.”

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Former Lab Technician Denies Faulty DNA Work in Rape Cases

A former New York City laboratory technician whose work on rape cases is now being scrutinized for serious mistakes said on Friday that she had been unaware there were problems in her work and, disputing an earlier report, denied she had resigned under pressure.

The former lab technician, Serrita Mitchell, said any problems must have been someone else’s.

“My work?” Ms. Mitchell said. “No, no, no, not my work.”

Earlier, the city medical examiner’s office, where Ms. Mitchell said she was employed from 2000 to 2011, said it was reviewing 843 rape cases handled by a lab technician who might have missed critical evidence.

So far, it has finished looking over about half the cases, and found 26 in which the technician had missed biological evidence and 19 in which evidence was commingled with evidence from other cases. In seven cases where evidence was missed, the medical examiner’s office was able to extract a DNA profile, raising the possibility that detectives could have caught some suspects sooner.

The office declined to identify the technician. Documents said she quit in November 2011 after the office moved to fire her, once supervisors had begun to discover deficiencies in her work. A city official who declined to be identified said Ms. Mitchell was the technician.

However, Ms. Mitchell, reached at her home in the Bronx on Friday, said she had never been told there were problems. “It couldn’t be me because your work gets checked,” she said. “You have supervisors.”

She also said that she had resigned because of a rotator cuff injury that impeded her movement. “I loved the job so much that I stayed a little longer,” she said, explaining that she had not expected to stay with the medical examiner’s office so long. “Then it was time to leave.”

Also on Friday, the Legal Aid Society, which provides criminal defense lawyers for most of the city’s poor defendants, said it was demanding that the city turn over information about the cases under review.

If needed, Legal Aid will sue the city to gain access to identifying information about the cases, its chief lawyer, Steven Banks, said, noting that New York was one of only 14 states that did not require routine disclosure of criminal evidence before trial.

Disclosure of the faulty examination of the evidence is prompting questions about outside review of the medical examiner’s office. The City Council on Friday announced plans for an emergency oversight committee, and its members spoke with outrage about the likelihood that missed semen stains and “false negatives” might have enabled rapists to go unpunished.

“The mishandling of rape cases is making double victims of women who have already suffered an indescribably horrific event,” said Christine C. Quinn, the Council speaker.

A few more details emerged Friday about a 2001 case involving the rape of a minor in Brooklyn, in which the technician missed biological evidence, the review found. The victim accused an 18-year-old acquaintance of forcing himself on her, and he was questioned by the police but not charged, according to a law enforcement official.

Unrelated to the rape, he pleaded guilty in 2005 to third-degree robbery and served two years in prison. The DNA sample he gave in the robbery case was matched with the one belatedly developed from evidence the technician had overlooked in the 2001 rape, law enforcement officials said. He was recently indicted in the 2001 rape.

Especially alarming to defense lawyers was the possibility that DNA samples were cross-contaminated and led to false convictions, or could do so in the future.

“Up to this point,” Mr. Banks said, “they have not made information available to us, as the primary defender in New York City, to determine whether there’s an injustice that’s been done in past cases, pending cases, or allowing us to be on the lookout in future cases.” He added, “If it could happen with one analyst, how does anyone know that it stops there?”

The medical examiner’s office has said that the risk of cross-contamination was extremely low and that it does not appear that anyone was wrongly convicted in the cases that have been reviewed so far. And officials in at least two of the city’s district attorneys’ offices — for Brooklyn and Manhattan — said they had not found any erroneous convictions.

But Mr. Banks said the authorities needed to do more, and that their statements thus far were the equivalent of “trust us.”

“Given what’s happened,” he said, “that’s cold comfort.”

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At War Blog: Highlights From Karzai, Obama News Conference

President Obama, after meeting with President Hamid Karzai of Afghanistan, said Friday that the United States would be able to accelerate the withdrawal of troops from Afghanistan in coming months because of gains made by Afghan security forces.

As the Times’s Mark Landler reported, Mr. Obama also made it clear that he contemplated leaving relatively few troops in Afghanistan after the NATO combat mission ends in 2014, saying that the mission will be focused on advising and supporting Afghan troops and targeting the remnants of Al Qaeda.

You can watch the full video here:

You can also find the joint statement, released by President Obama and President Karzai here.

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Gadgetwise Blog: Q&A: Dealing With Duplicate Work on Dropbox

What happens if two people work on the same file at the same time in a shared Dropbox folder? Does one copy of the file overwrite the other?

If two people are editing the same file at the same time, Dropbox saves both versions of the file in the shared folder. The service does not merge the two different files, but adds the words “conflicted copy” to the file name of the second version so it is obvious that two different copies of the same file now exist.

The file name of the second copy also lists the date that the conflict occurred between the two versions of the file. The computer name or name of the person who was working on the file is appended to the name as well, making it somewhat easier to identify the collaborator and ensure that everyone’s changes are incorporated into one final version of the document.

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Parental Consent Rule May Proceed for a Circumcision Ritual, a Judge Says

New York City health officials may proceed temporarily with a plan to require parental consent before an infant may undergo a particular Jewish circumcision ritual, a federal judge ruled Thursday.

City officials say 12 cases of herpes simplex virus have likely resulted from the procedure, known as metzitzah b’peh, since 2000, including one Brooklyn case reported this week. Two infants died, and two suffered permanent brain damage. Most Jews no longer practice metzitzah b’peh, in which the circumciser uses his mouth to suck blood from the wound, but it remains common among some ultra-Orthodox communities.

Citing the risk of infection, health officials in September introduced a regulation that would require parents to provide written consent stating that they were aware of the health risks.

But the Central Rabbinical Congress of the United States and Canada, Agudath Israel of America, and the International Bris Association sued in October to stop the rule from taking effect, calling it an infringement of their constitutional rights. They also denied the procedure posed a risk and asked a federal court to put the rule on hold while the litigation proceeded.

In denying the request for a preliminary injunction, Judge Naomi Reice Buchwald of the United States District Court for the Southern District wrote that the risks were clear.

“In light of the quality of the evidence presented in support of the regulation, we conclude that a continued injunction against enforcement of the regulation would not serve the public interest,” she wrote.

City lawyers said they were gratified by the ruling, but Andrew Moesel, a spokesman for the plaintiffs, said the groups would appeal. “We continue to believe that this case is a wrongful and unnecessary intrusion into the rights of freedom of religion and speech,” he said.

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Parental Consent Rule May Proceed for a Circumcision Ritual, a Judge Says

New York City health officials may proceed temporarily with a plan to require parental consent before an infant may undergo a particular Jewish circumcision ritual, a federal judge ruled Thursday.

City officials say 12 cases of herpes simplex virus have likely resulted from the procedure, known as metzitzah b’peh, since 2000, including one Brooklyn case reported this week. Two infants died, and two suffered permanent brain damage. Most Jews no longer practice metzitzah b’peh, in which the circumciser uses his mouth to suck blood from the wound, but it remains common among some ultra-Orthodox communities.

Citing the risk of infection, health officials in September introduced a regulation that would require parents to provide written consent stating that they were aware of the health risks.

But the Central Rabbinical Congress of the United States and Canada, Agudath Israel of America, and the International Bris Association sued in October to stop the rule from taking effect, calling it an infringement of their constitutional rights. They also denied the procedure posed a risk and asked a federal court to put the rule on hold while the litigation proceeded.

In denying the request for a preliminary injunction, Judge Naomi Reice Buchwald of the United States District Court for the Southern District wrote that the risks were clear.

“In light of the quality of the evidence presented in support of the regulation, we conclude that a continued injunction against enforcement of the regulation would not serve the public interest,” she wrote.

City lawyers said they were gratified by the ruling, but Andrew Moesel, a spokesman for the plaintiffs, said the groups would appeal. “We continue to believe that this case is a wrongful and unnecessary intrusion into the rights of freedom of religion and speech,” he said.

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Blasts in Pakistan Kill at Least 88 and Raise Fears Over Elections

Waheed Khan/European Pressphoto Agency

The worst violence was concentrated in the southwestern city of Quetta, where two explosions killed at least 57 people and wounded more than 110, the police said.

ISLAMABAD, Pakistan — Bomb blasts in two Pakistani cities killed at least 88 people on Thursday and wounded more than 270, offering harrowing evidence of how the country’s myriad internal conflicts may destabilize it as elections approach.

The worst violence was concentrated in the southwestern city of Quetta, where two explosions a few minutes apart in the evening ripped through a billiards hall in a neighborhood dominated by ethnic Hazara Shiites, killing at least 57 people and wounding more than 110, the police said.

A suicide bomber detonated his explosives inside the hall, and a second attacker then blew up his vehicle outside the club as police officers and journalists arrived, a senior police officer, Mir Zubair Mehmood, told reporters. The television channel Samaa said one of its camera operators was killed by the second explosion after rushing to the scene. Hospitals were overwhelmed as casualties arrived through the evening.

Quetta is no stranger to sectarian, nationalist and Islamist violence. Most violence against Shiites there has been directed by Lashkar-e-Jhangvi, a Sunni militant group with strong ties to the Pakistani Taliban. But there was no immediate claim of responsibility for the billiard hall attack.

An ethnic Baluch separatist group claimed responsibility for another bombing earlier on Thursday, aimed at paramilitary soldiers in a commercial part of Quetta, which killed 12 people.

The Hazara, minority Shiites who migrated from Afghanistan more than a century ago, have been the target of dozens of attacks from sectarian death squads led by Lashkar-e-Jhangvi in Quetta over the past year, but the billiard hall attack was by far the bloodiest.

Human rights activists said the police and the security forces failed to protect the vulnerable community. “The callousness and indifference of authorities offers a damning indictment of the state, its military and security agencies,” said Ali Dayan Hasan, the Pakistan director at Human Rights Watch.

The other focus of violence on Thursday was the Swat Valley, in the Hindu Kush mountains in northwestern Pakistan, where an explosion in the basement of a religious seminary killed at least 22 people and wounded an additional 60. It was not clear why the seminary, run by the Islamic missionary group Tableeghi Jamaat, was a target.

Initial reports said a gas leak had caused the explosion, but police and hospital officials later said that there was clear evidence of a bomb.

Doctors at a hospital in Saidu Sharif, near the site, said blast victims were being treated for wounds caused by ball bearings, which are sometimes packed into suicide bombs to make them more deadly.

“There was a smell of explosives,” Muhammad Iqbal, a senior doctor, said by telephone.

The violence underscores the fragility of state authority in parts of Pakistan as the country prepares for a general election that analysts say is likely to take place before June. Many Pakistanis worry that increasing instability could cause the elections to be postponed.

Islamist violence in Swat drew international condemnation in October after Taliban gunmen shot a teenage schoolgirl and education activist, Malala Yousafzai. The episode highlighted how Islamist fighters were slowly returning to the valley three years after a Pakistani military operation drove them away.

Ismail Khan contributed reporting from Peshawar, Pakistan.

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City Room: Free Outdoor Wi-Fi Comes to West Chelsea

Residents of West Chelsea inManhattan who were wondering what Google had done for them lately now have their answer: free Wi-Fi service for the whole neighborhood.

Google, which houses most of its 3,000 New York employees in a massive building on lower Eighth Avenue, has invested about $75,000 to install the broadest wireless network that is open to the public in any neighborhood in the city, elected officials announced Tuesday.

The service will be available for at least two years from Gansevoort Street north to 19th Street between Eighth Avenue and West Street. It was introduced at a news conference in a garden of a city housing project, the Robert S. Fulton Houses, by Mayor Michael R. Bloomberg, Senator Charles E. Schumer and a Google official.

No city or federal funds went into building the network, which required installation of 29 antennas on lampposts and rooftops. The service was set up through a partnership of Google and the Chelsea Improvement Company, a nonprofit neighborhood organization.

Mayor Bloomberg said free Wi-Fi service was already available in 20 parks in the city and was scheduled to be added to 32 more this year, but he could not say when his vision of a citywide Wi-Fi network would be realized. He encouraged Mr. Schumer to provide federal funding to expand the service to more neighborhoods.

“Keep in mind. somebody’s got to pay for the Wi-Fi,” the mayor said. “The question is, who?”

The total cost of setting up the Chelsea network was about $115,000, the balance of which was contributed by the Chelsea Improvement Company, said Ben Fried, Google’s chief information officer. He said the partners had committed to keeping the free service running for two years.

Dan Biederman, the president of the improvement company, also runs the Bryant Park Business Improvement District, which has provided free Wi-Fi in Bryant Park on 42nd Street for several years. He said the 34th Street Partnership, another business improvement district, which he also runs, hopes to start providing free Wi-Fi service within a year.

The officials at Tuesday’s announcement emphasized that the service would be available throughout the Fulton Houses complex. But some of those inside the senior center there were in no hurry to surf the Internet.

Taking a break from shooting a game of pool, Epi Pacheco, 65, said he did not make much use of a computer. “I got a little iPod and I could use it to go to YouTube, I think,” he said.

Still, Mr. Pacheco, who lives on West 55th Street, said Google should expand the service to his neighborhood and others as well. “They make so many million dollars, they should give something to the people,” he said.

Mr. Fried said the Chelsea network was unrelated to an ultrahigh-speed Internet network called Google Fiber that the company had begun in Kansas City.

A version of this article appeared in print on 01/09/2013, on page A18 of the NewYork edition with the headline: Free Wi-Fi From Google On Streets of Chelsea.

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Chinese Firm Buys an American Solar Technology Start-Up

Alexander F. Yuan/Associated Press

The chief of MiaSolé, John Carrington, left, at the announcement of the company’s purchase by Hanergy Holding Group, for which Zhou Jiesan is an executive.

Just a few years ago, Silicon Valley investors were pouring money into solar technologies and talking about how they would bring the same kind of innovation to green energy that they had to the computer chip.

But few anticipated that prices for silicon, the main component of traditional solar panels, would plummet or that Chinese manufacturers, backed by enormous subsidies from their government, would increase solar production capacity by a factor of 17 in just four years.

The resulting plunge in solar panel prices wiped out the dream of a new Solar Valley. Despite making advances in the new technology, known as thin-film solar, the American companies just couldn’t compete.

The federal government’s imposition of steep tariffs last year on Chinese conventional panels helped, but the industry had waited so late to apply for the tariffs that balance sheets had already been crippled with accumulated losses and investors had lost interest.

Some thin-film companies went bankrupt, including Solyndra, which had received half a billion dollars in federal subsidies. Others, like Stion, licensed their technology or formed strategic partnerships with large corporations.

On Wednesday, the chief executive of MiaSolé, one of the most promising Silicon Valley solar start-ups, appeared in Beijing for the announcement that Hanergy Holding Group of China had completed the purchase of his company and its technology for a fraction of what investors had put in. Hanergy made its money building hydroelectric dams.

Hanergy’s purchase of the 100-employee MiaSolé, based in Santa Clara, Calif., follows its acquisition in September of the 400-employee thin-film solar unit of Q.Cells, an insolvent German solar company. The two deals have allowed Hanergy to acquire at low cost an array of patents developed for hundreds of millions of dollars of venture capital investments.

“Going head to head against the Asian low-cost, mass-volume crystalline silicon manufacturers is not a wise strategy if you’re trying to produce an ultracheap module in the United States or in high-cost markets,” said Neil Z. Auerbach, managing partner of Hudson Clean Energy Partners, a SoloPower investor. “But if you’re adopting advanced technology, you have a niche strategy in which those incumbents do not have a competitive edge because they don’t really have a product that suits.”

The industry’s broad competitive challenges have prompted American investors to shun the sector. Last year, venture capital financing in the solar sector plummeted nearly 50 percent to $992 million in 103 deals from $1.9 billion in 108 deals in 2011, according to Mercom Capital Group, a clean-tech research and communications company.

Chinese regulators, too, have begun trying to deal with the overcapacity, discouraging their banks from making more large loans to the solar panel sector.

Li Hejun, the chairman of Hanergy, said at the news conference in Beijing that the company’s hydroelectric dams produce several hundred million dollars a year in free cash flow, so it can finance its own investments in solar, which already include six thin-film solar factories, plus three more under construction.

“Everyone knows about the overcapacity in solar energy industry in China, but for us industrial insiders, this overcapacity is but a relative one,” he said. “For those who have technology, the situation is the opposite.”

The thin-film technology championed by the Silicon Valley start-ups uses more exotic materials than conventional solar panels, which are made from crystalline silicon.

Most thin-film modules are slightly less efficient at converting sunlight into electricity than conventional panels, but they are much lighter, which makes them easier to mount in locations that may not support the weight of conventional panels.

Supporters of thin-film technology contend that it has the potential for considerable further efficiency gains that may not be possible for conventional panels, which have been researched for decades. And some research has shown that thin-film can outperform conventional silicon-based panels at high temperatures, such as in deserts, where solar farms are often located.

The technology’s promise attracted the attention of the Obama administration, which provided clean-energy grants and loans to some of the companies, although not to MiaSolé.

Diane Cardwell reported from New York and Keith Bradsher from Hong Kong. Patrick Zuo contributed research from Beijing.

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