মঙ্গলবার, ৩০ এপ্রিল, ২০১৩

To all HHH students going abroad: UMN travel policies - Global Notes

Please be aware that UMN requirements to purchase CISI insurance and seek permission for any country on the DOS travel warning list (and some that may be on other lists, like CDC) apply to all students on any university program abroad, or any overseas program connected to their studies at UMN, even if organized through another organization including internships, field experiences, capstones, study away, research or even a student-organized trip (if planned and promoted as UMN).

**MDP students going on field experiences and all students taking courses through Learning Abroad Center please note that the LAC handles CISI and release and waiver automatically for you.

2011 example: UMN had 3 students in Egypt spring 2011 semester. Two had UMN
CISI insurance and were quickly and efficiently repatriated from AU of Cairo via Madrid by the insurance company's security provider; a third student (unknown to UMN until he gave an interview to a media outlet) did not have insurance. He spent several days (3 days his family could not find him) in the Cairo airport, signed a promissory note to reimburse the US government for his evacuation flight to Istanbul ($2,000), and had to pay his costs in Istanbul as well as a new ticket home.

http://policy.umn.edu/Policies/Education/Student/EDABROAD.html
Travel Approval

The University of Minnesota encourages its students to participate in education experiences abroad. To minimize health and safety risks, University policy requires students, or faculty/staff leading students, traveling to countries on the US Department of State's travel warning list to seek special permission.

In addition, travelers may be required to submit a request for permission to travel to locations or participate in programs that pose a specific health, safety, or security concern as indicated by authorities other than the U.S. Department of State such as the Center for Disease Control (CDC), World Health Organization (WHO), non-U.S. government authorities (e.g., Australian or Canadian authorities), and University of Minnesota authorities.

The International Travel Risk Assessment and Advisory Committee will review
requests to travel to these countries. Applicants are encouraged to apply early. The committee review process commonly takes 6 to 8 weeks.

Please also note that even if students aren't going to a Travel Warning country, faculty/staff approving/sponsoring the travel are still required to assure students meet the policy requirements at: http://www.policy.umn.edu/Policies/Education/Student/EDABROAD_PROC02.html(insurance, release and waiver and emergency communication plan).

Please call or email me with any questions.

Sherry Gray

Source: http://blog.lib.umn.edu/gpa/globalnotes/2013/04/to-all-hhh-students-going-abro-2.php

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Cyberattack suspect to be sent home to Netherlands

MADRID (AP) ? A Dutch citizen arrested in Spain on suspicion of launching what authorities have called the biggest cyberattack in Internet history is expected to be handed over to the Netherlands within 10 days, a Spanish court official said Monday.

The suspect ? identified only by his initials S.K. ? was questioned Saturday in the National Court in Madrid after his arrest last week and agreed to the deal, according to the official, who spoke on condition of anonymity because court rules prevent him from giving his name.

Police say the 35-year-old suspect operated from a bunker in northeast Spain and also had a van capable of hacking into networks anywhere in the country. He was arrested Thursday in Granollers, 35 kilometers (22 miles) north of Barcelona.

He is accused of attacking the anti-spam watchdog group Spamhaus, whose main task is to halt ads for counterfeit Viagra and bogus weight-loss pills reaching the world's inboxes.

Dutch authorities alerted Spanish police in March of large denial-of-service attacks being launched from Spain that were affecting Internet servers in the Netherlands, United Kingdom and the U.S. These attacks culminated with a major onslaught on Spamhaus.

Denial-of-service attacks overwhelm a server with traffic, jamming it with incoming messages. Recent cyberattacks ? such as the ones that caused outages at U.S. banking sites last year ? have tended to peak at 100 billion bits per second. The attack on Spamhaus was three times that size.

Police from the Netherlands, Germany, Britain, Spain and the U.S. took part in the investigation.

Source: http://news.yahoo.com/cyberattack-suspect-sent-home-netherlands-123458203.html

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Fireballs! 'Tis the season for massive meteors.

Tonight (April 23) through Friday at dawn may be your best chance of the year to spot a fireball, a meteor that shines brighter than Venus, the brightest planet in the sky.

By Joe Rao,?SPACE.com / April 23, 2013

In this picture provided by Wally Pacholka of AstroPics.com, a Geminid fireball explodes over the Mojave Desert in the Jojave Desert, Calif. on Dec. 13, 2009. Unlike this Geminid fireball, the fireball-watching in the next few nights isn't connected to the just-completed Lyriad meteor shower or any other regular meteor shower.

Wally Pacholka / AstroPics.com / AP

Enlarge

The dramatic fireball that exploded over Russia in February got many people wondering if there is any way to anticipate future dazzling meteors before they appear.

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Well, meteors not associated with an annual shower are certainly tough to predict. But there are some patterns that skywatchers can keep in mind to maximize their chances of spotting a fireball (which technically is any meteor that shines more brightly than Venus in the sky).

For example, springtime is "fireball season," when the number of bright meteor sightings increases by as much as 30 percent, NASA experts say. And the three-day stretch from Tuesday (April 23) to Thursday (April 25) is perhaps the best time to watch for the next prospective fireball event, which might possibly even lead to the fall of a meteorite.?

Over the years, some real dazzlers have been seen during this time frame. And in at least two cases, the orbits of the meteors were virtually identical, suggesting Earth might hit more such space rocks when it passes through this part of its orbit.

A river of rubble?

Is there perhaps a "river of rubble" orbiting the sun that is populated by rather large meteoroids?

Unlike most of the annual meteor showers that are composed chiefly of dust and sand-sized particles ? such as the Lyrids, which peaked overnight Sunday (April 21) ? this supposed fireball stream might be made up of objects that are considerably larger, perhaps originating in the main asteroid belt between Mars and Jupiter or perhaps being shed by the nucleus of a long-dormant comet.?

The circumstantial evidence for such a meteor stream lies with two brilliant fireballs that appeared during the 1960s.

One of these fireballs cast shadows over northern New Jersey on April 23, 1962. The other was seen by thousands of people over England, Wales and Northern Ireland on April 25, 1969 and also dropped a 0.6-pound (0.27 kilograms) meteorite in the town of Sprucefield, Northern Ireland.

Source: http://rss.csmonitor.com/~r/feeds/science/~3/JN_cGf2dRGw/Fireballs!-Tis-the-season-for-massive-meteors

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সোমবার, ২৯ এপ্রিল, ২০১৩

Daily Chronicle | Are lesbians more accepted than gay men?

CHICAGO ? It may be a man?s world, as the saying goes, but lesbians seem to have an easier time living in it than gay men do.

High-profile lesbian athletes have come out while still playing their sports, but not a single gay male athlete in major U.S. professional sports has done the same. While television?s most prominent same-sex parents are the two fictional dads on ?Modern Family,? surveys show that society is actually more comfortable with the idea of lesbians parenting children.

And then there is the ongoing debate over the Boy Scouts of America proposal to ease their ban on gay leaders and scouts.

Reaction to the proposal, which the BSA?s National Council will take up next month, has been swift and often harsh. Yet amid the discussions, the Girl Scouts of USA reiterated their policy prohibiting discrimination based on sexual orientation, among other things. That announcement has gone largely unnoticed.

Certainly, the difference in the public?s reaction to the scouting organizations can be attributed, in part, to their varied histories, including the Boy Scouts? longstanding religious ties and a base that has become less urban over the years, compared with the Girl Scouts?.

But there?s also an undercurrent here, one that?s often present in debates related to homosexuality, whether over the military?s now-defunct ?Don?t Ask, Don?t Tell? policy or even same-sex marriage. Even as society has become more accepting of homosexuality overall, longstanding research has shown more societal tolerance for lesbians than gay men, and that gay men are significantly more likely to be targets of violence.

That research also has found that it?s often straight men who have the most difficult time with homosexuality ? and particularly gay men ? says researcher Gregory Herek.

?Men are raised to think they have to prove their masculinity, and one big part about being masculine is being heterosexual. So we see that harassment, jokes, negative statements and violence are often ways that even younger men try to prove their heterosexuality,? says Herek, a psychologist at the University of California, Davis, who has, for years, studied this phenomenon and how it plays out in the gay community.

That is not, of course, to downplay the harassment lesbians face. It can be just as ugly.

But it?s not as frequent, Herek and others have found, especially in adulthood. It?s also not uncommon for lesbians to encounter straight men who have a fascination with them.

?The men hit on me. The women hit on me. But I never feel like I?m in any immediate danger,? says Sarah Toce, the 29-year-old editor of The Seattle Lesbian and managing editor of The Contributor, both online news magazines. ?If I were a gay man, I might ? and if it?s like this in Seattle, can you imagine what it is like in less-accepting parts of middle America??

One of Herek?s studies found that, overall, 38 percent of gay men said that, in adulthood, they?d been victims of vandalism, theft or violence ? hit, beaten or sexually assaulted ? because they were perceived as gay. About 13 percent of lesbians said the same.

A separate study of young people in England also found that, in their teens, gay boys and lesbians were almost twice as likely to be bullied as their straight peers. By young adulthood, it was about the same for lesbians and straight girls. But in this study, published recently in the journal Pediatrics, gay young men were almost four times more likely than their straight peers to be bullied.

At least one historian says it wasn?t always that way for either men or women, whose ?expressions of love? with friends of the same gender were seen as a norm ? even idealized ? in the 19th century.

?These relationships offered ample opportunity for those who would have wanted to act on it physically, even if most did not,? says Thomas Foster, associate professor and head of the history department at DePaul University in Chicago.

Today?s ?code of male gendered behavior,? he says, often rejects these kinds of expressions between men.

We joke about the ?bro-mance? ? a term used to describe close friendships between straight men. But in some sense, the humor stems from the insinuation that those relationships could be romantic, though everyone assumes they aren?t.

Call those friends ?gay,? a word that?s still commonly used as an insult, and that?s quite another thing. Consider the furor over Rutgers University men?s basketball coach Mike Rice, who was recently fired for mistreating his players and mocking them with gay slurs.

If two women dance together at a club or walk arm-in-arm down the street, people are usually less likely to question it ? though some wonder if that has more to do with a lack of awareness than acceptance.

?Lesbians are so invisible in our society. And so I think the hatred is more invisible,? says Laura Grimes, a licensed clinical social worker in Chicago whose counseling practice caters to gay, lesbian, bisexual and transgender clients.

Grimes says she also frequently hears from lesbians who are harassed for ?looking like dykes,? meaning that people are less accepting if they look more masculine.

Still, Ian O?Brien, a gay man in Washington, D.C., sees more room for women ?to transcend what femininity looks like, or at least negotiate that space a little bit more.?

O?Brien, who?s 23, recently wrote an opinion piece tied to the Boy Scout debate and his own experience in the Scouts when he was growing up in the San Diego area.

?To put it simply: Being a boy is supposed to look one way, and you get punished when it doesn?t,? O?Brien wrote in the piece, which appeared in The Advocate, a national magazine for the gay, lesbian, bisexual and transgender communities.

Joey Carrillo, a gay student at Elmhurst College in suburban Chicago, remembers trying to be as masculine as possible in high school. He hid the fact that he was gay, particularly around other athletes. As a wrestler, he says he never wanted to hear someone say, ?Oh, THAT?S why he wrestles.?

In fact, though more gay and lesbian athletes are coming out in college, gay male professional athletes in major sports have waited to do so until they have left their sport, one of the more recent being Robbie Rogers, an American soccer player who played professionally in England. There have been reports that gay male athletes who are currently playing may be on the verge of going public.

But women have already done so with little backlash.

U.S. soccer star Megan Rapinoe, for instance, came out right before she played in last year?s Olympics. WNBA star Seimone Augustus and the league?s No. 1 draft pick, Brittney Griner, are some of the more recent female athletes to follow suit.

In Hollywood in recent years, both openly gay men and lesbians have had successful careers. And when it comes to television and movies, it appears there are more high-profile gay male characters.

Still, while many see the two dads on the ?Modern Family? sitcom as groundbreaking, others have a sense that the societal discomfort with gay men as parents is at the root of many of the jokes.

?A good portion of that is for comedic effect,? says Don Todd, a 32-year-old father in a two-dad family in Orange, Calif. He doesn?t think most people would think it was as funny if the characters were two moms.

Herek, the researcher at UC-Davis, has, in fact, found in surveys that heterosexuals think lesbians would be better parents than gay men.

Nancy Dreyer, a mother in a two-mom family, has noticed this in her own life.

?With gay male friends of ours who have kids, people will say, ?My gosh, who takes care of this baby?? ? as if they?re not capable,? says Dreyer, whose 57 and lives in suburban Boston.

The assumption, she says, is that men aren?t nurturing. And if they?re too nurturing, she says, people get suspicious, noting that no one has ever questioned her and her partner about their ability to raise their son, who?s now in college.

She?s noticed the different ways society treats gay men and lesbians, partly because she has a brother, Benjamin Dreyer, who?s gay. The Dreyer siblings say it?s difficult to compare their experiences because Benjamin came out in college, and Nancy in her early 30s.

So he was the first to tell their parents. ?They yelled at me. They took you to dinner,? Benjamin Dreyer, who?s 54 and works in publishing in New York City, now jokes with his sister.

Truth was, as a young gay man coming of age as the AIDS epidemic took hold, his parents simply worried, and with good reason, his sister says.

There?s little doubt, they both say, that AIDS influenced the perception of gay men.

Benjamin Dreyer says he dealt with societal bias by avoiding it, and surrounding himself with people he knew would be supportive, including his parents, eventually.

But he?s also realizing how quickly the need to do that is disappearing. He was surprised and pleased, for instance, when he attended his nephew?s high school graduation last year. There, he saw a gay male graduate with his boyfriend, open and accepted by all his peers.

?It?s mind-boggling,? Benjamin Dreyer says. ?It?s wonderful.?

Carrillo, too, decided to live openly when he arrived at Elmhurst College. He joined a fraternity and even painted a rainbow ? a common symbol of the gay community ? on his fraternity paddle. To his surprise, there was some backlash from a couple of his straight fraternity brothers who feared people would think their fraternity was the ?gay fraternity.?

?There?s a long way to go,? says Carrillo, who graduates next month. But he still feels hopeful.

?Honestly, I see it ? everywhere there?s progress.?

___

Martha Irvine is an AP national writer. She can be reached at mirvine(at)ap.org or at http://twitter.com/irvineap

There are 27 hours, 2 minutes remaining to comment on this story.

Source: http://www.daily-chronicle.com/2013/04/27/are-lesbians-more-accepted-than-gay-men/ao2g0gn/

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Even Vinny Magalhaes can?t believe a judge gave him a round in UFC 159 loss to Phil Davis

At UFC 159 on Saturday night, Phil Davis showed off the best striking of his career. The NCAA Division-I champion wrestler clearly dominated Vinny Magalhaes in all three rounds on the way to a unanimous decision win. However, one of the judges thought Magalhaes won one round, and the score was 30-27, 30-27, 29-28.

It was a surprising score. It didn't take anything away from Davis' win, but it was odd enough that Magalhaes spoke up about it.

Davis and Magalhaes talked trash to each other for months before their bout. Magalhaes left the bad blood in the cage, and was able to give himself an honest assessment moments after the loss.

Source: http://sports.yahoo.com/blogs/mma-cagewriter/even-vinny-magalhaes-t-believe-judge-gave-him-034024125.html

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Mobile App Ratings: Teens Review Their Favorite Social Apps From ...

This article was written by teen reporters from The Mash, a weekly publication distributed to Chicagoland high schools.

By Ashley Black, St. Charles East high school, and Mikhaela Padilla, Whitney Young high school

The time of simple communication is dwindling toward extinction. Think about it: When?s the last time you called a friend from a landline phone and talked for hours? Year after year, study after study, it?s shown that teens favor communicating through social networks such as Facebook and Twitter.

But now, there?s a new crop of social networking applications that are readily available to teens (aka free)?and there?s something for everyone. Want to show off a vacation photo? Instagram is your best bet. Interested in documenting your life, one check-in at a time? Path can help you with that. Or maybe you just want to send a silly selfie to your best friends? Check out Snapchat.

We rounded up some of the most popular communication apps, tried them out for ourselves and gave them report cards.

Instagram

Instagram allows its users to play professional photographer with filters, a cropping tool and focus options. Plus, you can see what your friends (and celebs) are up to through live updates.

Unlike Facebook and Twitter, Instagram is a photo-only app that banks on creativity. ?People love it because it shows a little bit of your personality and your life,? said Brianna Booth, a freshman at Barrington.

Since Instagram?s launch in 2010, heaps of knockoff apps have debuted. Still, most lack the massive following that Instagram has built.

Instagram did come under fire late last year after changing its terms of service. Users worried that the app could sell their works of art. Instagram cleared that up: You own your photos, but Instagram can share your user data with its parent company, Facebook.

Grade: A
Top marks for: user-friendly tools, creativity and cult-like following
Could improve: confusing service terms

GifBoom

In a nutshell, GifBoom is a moving Instagram. The app makes it easy to create and share your very own gifs (aka animated photographs, like the ones on whatshouldwecallme.tumblr.com). Unlike Tumblr, GifBoom only allows its users to share gifs?no still photos allowed.

One major complaint? It?s not super user-friendly at first. ?It was hard to navigate for the first week,? said Gina Paletta, a freshman at St. Charles East. ?I had no idea what I was doing and it took time to figure out.?

Once you get the hang of it, GifBoom is a unique app to have. If you?ve ever wished your Instagram photos could move, this app is for you.

Grade: B+
Top marks for: growing user base and clean design
Could improve: ease of use and tools

Pheed

If Facebook, Twitter, Instagram and YouTube had a baby (don?t ask us how), it would be Pheed. The easy-to-use, clutter-free app is quickly gaining popularity and followers. You can use Pheed to share texts, photos, videos, audio and live broadcasts.

Some would say the concept is new, but others find it repetitive. ?Facebook is all I need because other apps are basically all just the same,? said Jose Garcia, a junior at Carl Schurz.

But there is something that sets Pheed apart: Users can subscribe to premium channels for a fee (anywhere from $1.99 to $34.99 per month). For example, a singer might broadcast their performance or concert on Pheed and users would have to subscribe?and possibly pay a fee?to view it.

Grade: A-
Top marks for: clutter-free design and ease of use
Could improve: originality and premium fees

Path

If you love the idea of Facebook?s timeline, Path might just be your new favorite app. The new-ish concept allows you to share almost anything: your current location, what you?re listening to, future plans, cute stickers and more. The app also allows you to have conversations with friends (as shown above).

?Facebook and Instagram are easier to use and understand, but Path is a more minute-by-minute timeline of someone?s day,? said Brooke Rinker, a senior at St. Charles East.

One major difference between Facebook and Path is that you can have only 150 friends on Path. It creates a more close-knit feeling for many users, but some find it too restrictive.

Grade: B
Top marks for: live updating and variety
Could improve: sharing restrictions and ease of use

Snapchat

Snapchat is like nothing else on the app market. You take a photo or short video, add text or a doodle and send it to your friends to view for a set amount of time (one to 10 seconds, your choice). Once your friends open the pic, they have to press down on their phone screen to view your photo. After the timer is up, the photo or video disappears forever ? or so we?re told.

?Snapchat allows people to easily share information about their lives on a whole (different) level using photos,? said Willie Stevan, a sophomore at Whitney Young. ?I send about 15 snaps a day and receive, like, 50!?

One downfall? The privacy settings are questionable. A University of Michigan student and hacker, Raj Vir, reported that users secretly can save incoming images. Note to all: Don?t send anything via Snapchat that you wouldn?t want to resurface.

Grade: B+
Top marks for: originality and easy-to-use tools
Could improve: privacy settings

Also on HuffPost:

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Source: http://www.huffingtonpost.com/2013/04/27/mobile-app-ratings-teens-_n_3171661.html

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Getting to the Bottom of Why Guppies Jump

When a guppy jumped out of a laboratory tank and nearly landed in her cup of tea, Daphne Soares couldn?t resist putting her current research on hold to investigate this strange leaping behavior.

"The guppy jumped from its holding tank next to my computer," Soares, an assistant professor in the department of biology at the University of Maryland in College Park, told LiveScience. "Why do they do this? It was one of those things that we were just too curious about, so we had to look into it."

Soares and her colleagues used high-speed cameras to film a group of nine male guppies from the island of Trinidad. Their research, published online April 16 in the journal PLOS ONE, suggests wild guppies use their curious jumping ability as a way to spread the species away from an original habitat, to a new place with fewer predators. In other words, jumping likely serves a crucial evolutionary function for guppies.

"It's like how dandelions spread their seeds all over ? original populations give rise to secondary populations," Soares explained. "When guppies jump, we think it has to do with this idea of biological dispersal, which refers to a species moving away from an existing population to try to colonize another patch of habitat." [10 Amazing Facts About Animals]

Guppies are known to be jumpy fish, but unlike other species (such as archer fish or sockeye salmon), they do not seem to leap out of the water to catch prey, escape from predators or overcome physical barriers during seasonal migrations.

"They just have this urge to jump," Soares said. "They don't do it out of panic, or because they're anxious about their environment. When we monitored them, they jumped when they were quiet and relaxed. Most fishes jump when they're startled, so either for migration or to avoid predators. But with guppies, it was a controlled situation when they performed this behavior."

In studying their high-speed video of leaping guppies, the researchers observed that the fish go through a short process to prepare for their jumps.

"I don't want to anthropomorphize too much, but it's almost like they have a plan," Soares said. "They stop, then use just their lateral fins to move a bit backwards, then they change direction, and when they take off from the water, they keep moving their bodies back and forth."

The scientists were also curious how far the fish could fling themselves out of the water. In some of their observed cases, guppies were able to launch themselves to heights eight times their body length, at speeds of more than 4 feet per second (1.2 meters per second).

The researchers used wild guppies for their study, so what triggers pet guppies to jump remains a bit of a mystery.

"Domesticated guppies probably maintain some of their ancestral behaviors, but I don't really know," Soares said.

And as for the guppy that nearly jumped into Soares' tea?

"Fortunately it was iced chai and it had a lid on, so he stayed alive," she said.

Follow Denise Chow on Twitter @denisechow. Follow LiveScience @livescience, Facebook?& Google+. Original article on?LiveScience.com.

Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Source: http://news.yahoo.com/getting-bottom-why-guppies-jump-135149307.html

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Google Now available on iOS devices starting today

Google Now available on iOS devices starting today

When it comes to major news, we didn't expect to hear much from Google in the run-up to I/O, but clearly, the company just couldn't wait that long. Google Now, a service that Android users have enjoyed for a year, just became available on iOS devices in the form of an update to the Google Search app, confirming those leaked videos we saw a few weeks ago. It won't have integration with notifications or alerts at launch -- it may come in a future update, but the company wasn't willing to divulge its future plans -- so you'll need to enter the app and swipe up to refresh your list of cards. The iOS version won't have every type of card that you'll find on Android, either: boarding passes, activity summary, events, concerts, Fandango and Zillow aren't included this go-round. Improvements and additional features will likely trickle in over time, but it's certainly better than nothing for iOS fans who've looked at Jelly Bean users with a slightly jealous eye. We've included Google's blog post in its entirety below, and you can jump to More Coverage to download the app.

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Source: http://feeds.engadget.com/~r/weblogsinc/engadget/~3/IfRW3CkQ4nQ/

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রবিবার, ২৮ এপ্রিল, ২০১৩

Stars fire GM Joe Nieuwendyk after 4 seasons

(AP) ? The Dallas Stars fired general manager Joe Nieuwendyk on Sunday after four seasons, two coaches and no playoff appearances.

The dismissal came the day after Dallas completed a 22-22-4 season. The Stars missed the playoffs for the fifth season in a row.

Owner Tom Gaglardi said in a statement that Nieuwendyk represented the Stars "extremely well" and "helped put pieces in place that will once again turn this team into a contender." He added, however, the team must go "in a different direction with our intentions set on returning to the elite" of the NHL.

The team is to announce its new GM on Monday. While the Stars have not said who it is, Gaglardi is "confident we have found the right general manager to return us to the pathway of success."

The team has refused to comment on reports that Jim Nill, Detroit's longtime assistant GM, will get the job.

The future of coach Glen Gulutzan wasn't addressed by the team in its statement. Dallas holds an option for a third season for Gulutzan, who is 64-57-9 in his two seasons after ending the lockout-shortened season with a 3-0 home loss to Detroit. The Stars dropped their last five games and won only once in their last seven after a five-game winning streak.

When asked about his job after Saturday night's game, Gulutzan said that wasn't under his control. He did praise Nieuwendyk.

"All I can say is that Joe's been tremendous for me. I think he's done a hell of a job," Gulutzan said. "You can see with our farm team and the young guys that we have here."

As a player in Dallas, Nieuwendyk won the Conn Smythe Award as playoff MVP in 1999 when the Stars won their only Stanley Cup.

When hired by Nieuwendyk two years ago to replace the fired Marc Crawford, the 41-year-old Gulutzan had never coached in the NHL. Gulutzan had been a successful minor league coach.

Crawford was hired following Dave Tippett's firing in 2009, after the Stars missed the playoffs a year after making it to the Western Conference finals. Tippett later that year replaced Wayne Gretzky as coach in Phoenix and led the Coyotes to the playoffs. He was honored as the league's top coach.

The Stars weren't eliminated from the playoff chase until Thursday night. They stayed in postseason contention even after longtime captain Brenden Morrow was traded, a week before 41-year-old points leader Jaromir Jagr and Derek Roy were dealt at the trading deadline.

Dallas got several young players and extra draft picks in those deals. Within days after Jagr and Roy were traded, the young Stars went on a season-best five-game winning streak.

Morrow waived his no-trade clause to go to Pittsburgh, which entered the playoffs as the No. 1 seed in the Eastern Conference. Morrow's rookie season in Dallas was 1999-2000, when the Stars were the Stanley Cup runner-up a year after their title.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/347875155d53465d95cec892aeb06419/Article_2013-04-28-HKN-Stars-GM-Fired/id-154946070f534ae89d99d3291bde387d

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Escaped convict turns himself in after 14 years on the run

OKLAHOMA CITY (AP) ? After 14 years on the run from the FBI and tips from witnesses in two countries, David Lee Kemp turned himself over to authorities in southwest Oklahoma early Friday morning, local authorities said.

Kemp, of Lawton, Okla., was the only inmate to elude capture after escaping with eight other inmates on March 11, 1999, while awaiting trial on two first-degree murder counts in the killings of his ex-wife and her boyfriend.

Comanche County Sheriff Kenny Stradley said Kemp told police he was done running.

"He said that he was just tired basically of running and it was affecting his health," Stradley told The Associated Press.

Comanche County Jail records show Kemp was taken into custody at about 1:40 a.m. Friday on charges of felony first-degree murder and escaping from a county jail, a misdemeanor.

The sequence of events leading up to his arrest started at a rest stop along Interstate 44, Stradley said, when Kemp knocked on the window of a sleeping truck driver.

"He said, 'I need you to call Comanche County Sheriff's department to come up here. I need to talk to them,'" Stradley told The Associated Press in a phone interview.

A deputy arrived and told Kemp he looked familiar. The deputy then asked for Kemp's name. Kemp told him and was immediately arrested, Stradley said. It's unclear if Kemp has a lawyer.

Kemp is charged in the deaths of Christina Cremer and her boyfriend, Robert Miller, whose bodies were found in August 1998, riddled with bullets in their Lawton apartment. He was apprehended by police in California several days later and taken to Comanche County.

In March 1999, he and eight other inmates overpowered a guard with a large grilling fork and escaped. Most were recaptured the same day.

Since then, Kemp was the subject of the "America's Most Wanted" and "Unsolved Mysteries" TV shows. He was reportedly spotted in Las Vegas and may have also been spotted in Phoenix, Louisiana and even Canada.

Stradley was also sheriff back in 1999 when Kemp escaped, and called Kemp's capture "a big relief."

A spokesman for the county said Kemp was under observation because of suicide concerns.

"He's completely compliant right now and following all the rules," said Jacob Russell, the spokesman. "All the added security at this time will be to and from the courtroom."

Source: http://news.yahoo.com/inmate-missing-since-1999-surrenders-oklahoma-162641201.html

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American jihadi in Somalia tweets on kill attempt

NAIROBI, Kenya (AP) ? A most-wanted American jihadi in Somalia said Friday that the leader of Islamic extremist rebels in Somali was starting a civil war, just hours after an assassination attempt left the Alabama native with a neck wound.

Omar Hammami posted on Twitter about what he labeled an assassination attempt late Thursday as he was sitting in a tea shop. He posted four pictures, one of which shows his face with blood on his neck and a dark blood-stained t-shirt.

Hammami, one of the two most notorious Americans in overseas jihadi groups, moved from Alabama to Somalia and joined al-Shabab in about 2006. He fought alongside the al-Qaida-linked group for years while gaining fame for posting YouTube videos of jihadi rap songs.

But Hammami had a falling out with al-Shabab and has engaged in a public fight with the group over the last year amid signs of increasing tension between Somalis and foreign fighters in the group. He first expressed fear for his life in an extraordinary web video in March 2012 that publicized his rift with al-Shabab. He said he received another death threat earlier this year that was not carried out.

"Just been shot in neck by shabab assassin. not critical yet," Hammami tweeted late Thursday. On Friday he wrote that the leader of al-Shabab was sending in forces from multiple directions. "we are few but we might get back up. abu zubayr has gone mad. he's starting a civil war," Hammami posted.

Hammami has been a thorn in the side of al-Shabab after accusing the group's leaders of living extravagant lifestyles with the taxes fighters collect from Somali residents. Another Hammami grievance is that the Somali militant leaders sideline foreign militants inside al-Shabab and are concerned only about fighting in Somalia, not globally. Hammami's Friday comment about a civil war could refer to violence between those two groups.

Al-Shabab slapped Hammami publicly in a December Internet statement, saying his video releases are the result of personal grievances that stem from a "narcissistic pursuit of fame." The statement said al-Shabab was morally obligated to stamp out his "obstinacy."

Hammami has enemies on all sides. The U.S. named Hammami to its Most Wanted terrorist list in March and is offering a $5 million reward for information leading to his capture. Al-Shabab fighters are not eligible for the reward.

Along with Adam Gadahn in Pakistan ? a former Osama bin Laden spokesman ? Hammami is one of the two most notorious Americans in jihad groups. He grew up in Daphne, Alabama, a bedroom community of 20,000 outside Mobile. He is the son of a Christian mother and a Syrian-born Muslim father.

Hammami regularly chats on Twitter with a group of American terrorism experts, conversations that are so colloquial and so infused with Americana that many in the counter-terror field have formed a type of digital bond with Hammami.

After Hammami publicized the assassination attempt, one of his Twitter followers, a counter-terrorism expert from Canada, wrote that Hammami had nine lives. Hammami responded with an apparent reference to the movie The Blues Brothers. "'I'm on a mission from God.' minus the blues music," Hammami wrote.

After the shooting, American terrorism expert J.M. Berger, who has a long-running Twitter relationship with Hammami, posted that it looks like Hammami came within a quarter-inch of death. "Perhaps it's time to come in now," Berger tweeted.

Terrorism expert Clint Watts wrote on his blog, Selectedwisdom.com, that the attack proves that Hammami should fear for his life. Watts said Hammami's anti-Shabab social rants were annoying the militant group and he predicted conflict between Somali militants and foreign fighters.

"If there is going to be a war inside Shabaab, I'm guessing it will happen soon," Watts wrote.

Source: http://news.yahoo.com/american-jihadi-somalia-tweets-kill-attempt-092939991.html

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Mississippi man suspected in ricin case has been arrested, FBI says (Washington Post)

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Futures head lower ahead of economic growth report

NEW YORK (AP) ? Futures are falling after a solid week of corporate earnings drove all major markets higher, as investors grow more cautious before the latest U.S. economic growth report is released.

Dow Jones industrial futures are down 35 points to 14,618. S&P futures have lost 4.9 points to 1,576.80. Nasdaq futures are down 9.75 points to 2,834.25.

Most economists believe that U.S. economic growth was reignited during the first three months of the year after coming to a standstill to end 2012.

Yet there is considerable apprehension about the effects of higher taxes and diminished government spending. Economists predict that the overall economy grew at an annual rate of 3.1 percent from January to March.

The Commerce Department releases the report at 8:30 a.m. Eastern on Friday.

Source: http://news.yahoo.com/futures-head-lower-ahead-economic-growth-report-114859079--finance.html

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Top Business Blogs | Content for Reprint

Author: Martie McCabe | Total views: 177 Comments: 0
Word Count: 975 Date:

You can enjoy nearly unlimited success when you apply effective Internet marketing principles. There are lots of different ways one can interact and communicate customers today that was never possible in the past. This article will help you develop a better understanding of the basics behind this form of advertising.

Hold events and promotions to attract traffic. Perhaps you could run a two day sale on an e-book, with loss-leader price of a dollar or two. They will come for the sale, but they will often see other things that they like. They may even make another purchase while they are there picking up their cheap e-book.

Have a section of your site dedicated to customer feedback about your products. Your visitors will enjoy reading others' opinions of your product and your service. Comments show that your site is honest and trustworthy and makes your customers feel comfortable purchasing from you.

If you want to get a large number of visitors at your site, viral videos can accomplish this. However, it can take some real creativity and determination to develop a video that catches on with thousands and thousands, if not millions, of viewers. If done the right way, it will have a big impact on your sales as opposed to any other kind of campaign.

Contribute to a charitable organization on behalf of top business blogs. Select a cause that will most likely reflect your customers interests and agendas, and inform them that some of your profits are donated to that charity. This charity will advertise for you, and it will also make your company look better. You could support several charities and allow your customers to choose their favorite.

You can use organic methods to increase the visibility of your business and you can pay to advertise online. This can easily be accomplished by using a company such as Google AdSense. This allows you to get the most exposure and variety for your advertising dollar.

Try offering special discounts for buying the same product regularly. Offer them a plan where if they agree to sign up for a subscription to receive additional supplies periodically, they will receive a small amount off the normal single unit price.

Consider advertising your business online to increase its visibility. You will be glad you spend the money over time because it will pay for itself. It's a great way to attract clients who might not have found you otherwise.

Your customers are going to have a lot of questions, and you need to be ready to answer them. People visit your website in a quest for further information. If you do not provide prompt and accurate responses, they will move on. If you give them info that will answer their inquiries, they will be more likely to purchase your products.

Put relevant and useful information on your page. A simple digital billboard featuring your hours of operation, address and toll free number is simply not going to garner you much business. Try adding articles and things like reviews to gain interest in potential customers. This helps them know that you're informed about your products and services.

Create a website that has informative content and is easy to navigate. Your main focus should be educating your customers quickly so they have an idea what they are buying. Don't pad your descriptions or provide irrelevant information that will just bore your customers.

Direct marketing for a home based business blog, should not be overlooked as a complement to the marketing system for your Internet site. Contact your customers via email, phone or fax to let them know about any upcoming specials you may have. The yellow pages or Internet phone books will be of great use.

Affiliate marketing is similar to other markets, but it can also be drastically different in some distinct areas. Maybe search engines won't focus as much on title tags in the future. If the search engines do implement a major change, you need to be ready to alter your campaigns to include techniques such as video marketing.

Make use of emphasis coding on your website. Draw focus to words or phrases that you want to highlight by using bold text, underlining the phrases or italicizing the words. This can help you determine how you wish your customers to receive a specific type of message. This also makes the message more clear.

Getting Google to list your website is essential for your internet promotion success. Google is utilized by millions of people daily, and you need your business there in case they are searching a term related to you. You can list your business on directories such as Yahoo Maps, Google Places or Yelp, for instance.

You must determine the composition of your audience and decide what sort of information will draw them to the website. When you have a target audience in mind, deciding on content becomes much simpler.

Nothing sells quite like a product that the customer feels an attachment to, so it's up to you to propagate that attachment. Ask the user to think about how their life would benefit from using the product you are offering. The customer should be able to imagine the benefits just by reading about the product.

We have already seen how marketing through the Internet offers a way to contact new customers. It is also an excellent way to retain the customers you already have. The Internet has opened up a whole panoply of new ways for customers and businesses to connect with each other. Implement what you've learned from this article, and start a rewarding Affiliate marketing journey.

Martie McCabe writes articles on internet marketing and strategies to help you set up a blog. Learn more about blogging tips on how to create an internet business blog by visiting my blog at http://www.empowernetwork.com/10k/top-business-blogs/.

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1: Article Marketing Strategy: Putting Together a "Class Schedule" For Your Article Topics

Businesses go to so much trouble when there is one sure-fire, simple, very inexpensive way to attract new clients to a business: Teach a free class. That is what article marketing is like. Your articles are just like free classes. You teach your target readers something helpful in your article. Your resource box then says, "If you enjoyed this article you can visit my website and apply what you have learned."

2: Why You Need To Build Multiple Streams of Income For Yourself

Being an entrepreneur and earning multiple streams of income is a dream that many have, but in reality it does take some initial hard work to achieve this. Earning multiple streams of income is the wave of the future, and here are some tips and advice for you when you are looking for ways in which to do this for yourself.

3: Understanding Online Business Success

Starting a home based business to earn income online takes a significant amount of time and energy upfront to get things going. Not seeing results immediately can be discouraging and cause people to give up too early. In this article, we look at the process of starting a home based business and working through the frustrations to be there when the sales come flowing in.

4: What is Cyber Marketing And Why It Is So Important For The Success Of Your Website

Cyber marketing has now become an indispensable segment of e-commerce as well as the internet and World Wide Web related topics. Cyber marketing simply refers to a technique of attracting potential customers by advertising your products or services through such means as websites, emails, and banners.

5: The Best Way To Optimise Your Website SEO For Google Panda

If you want your SEO to work you now need to concentrate on appeasing Google Panda, and to do this you need to know what Google Panda's spiders/bots will be looking for. Find out here how to search engine optimise your website for the latest Google Panda algorithm, and achieve the success you deserve.

Source: http://www.content4reprint.com/internet-marketing/top-business-blogs.htm

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New drug stimulates immune system to kill infected cells in animal model of hepatitis B infection

Apr. 26, 2013 ? A novel drug developed by Gilead Sciences and tested in an animal model at the Texas Biomedical Research Institute in San Antonio suppresses hepatitis B virus infection by stimulating the immune system and inducing loss of infected cells.

In a study conducted at Texas Biomed's Southwest National Primate Research Center, researchers found that the immune modulator GS-9620, which targets a receptor on immune cells, reduced both the virus levels and the number of infected liver cells in chimpanzees chronically infected with hepatitis B virus (HBV). Chimpanzees are the only species other than humans that can be infected by HBV. Therefore, the results from this study were critical in moving the drug forward to human clinical trials which are now in progress.

The new report, co-authored by scientists from Texas Biomed and Gilead Sciences, appears in the May issue of Gastroenterology. Gilead researchers had previously demonstrated that the same therapy could induce a cure of hepatitis infection in woodchucks that were chronically infected with a virus similar to human HBV.

"This is an important proof-of-concept study demonstrating that the therapy stimulates the immune system to suppress the virus and eliminate infected liver cells," said co-author Robert E. Lanford, Ph.D., of Texas Biomed. "One of the key observations was that the therapy continued to suppress virus levels for months after therapy was stopped.

The current therapy for HBV infection targets the virus and works very well at suppressing viral replication and delaying progression of liver disease, but it is a lifelong therapy that does not provide a cure.

"This GS-9620 therapy represents the first conceptually new treatment for HBV in more than a decade, and combining it with the existing antiviral therapy could be transformative in dealing with this disease," stated Lanford.

The Gilead drug binds a receptor called Toll-Like Receptor 7 that is present in immune cells. The receptor normally recognizes invading viruses and triggers the immune system to suppress viral replication by the innate immune response and kill infected cells by the adaptive immune response, thus orchestrating both arms of the immune system.

HBV damages the liver, leading to cirrhosis and liver cancer. Liver cancer is the fifth most common cancer worldwide and the third most common cause of cancer death. According to the United States Centers for Disease Control and Prevention (CDC), up to 1.4 million Americans are chronically infected with HBV.

The World Health Organization estimates that two billion people have been infected with the hepatitis B virus, resulting in more than 240 million people with chronic infections and 620,000 deaths every year.

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The above story is reprinted from materials provided by Texas Biomedical Research Institute, via EurekAlert!, a service of AAAS.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Journal Reference:

  1. Robert E. Lanford, Bernadette Guerra, Deborah Chavez, Luis Giavedoni, Vida L. Hodara, Kathleen M. Brasky, Abigail Fosdick, Christian R. Frey, Jim Zheng, Grushenka Wolfgang, Randall L. Halcomb, Daniel B. Tumas. GS-9620, an Oral Agonist of Toll-Like Receptor-7, Induces Prolonged Suppression of Hepatitis B Virus in Chronically Infected Chimpanzees. Gastroenterology, 2013; DOI: 10.1053/j.gastro.2013.02.003

Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_health/~3/ww9ov1VhtEA/130426152556.htm

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Physicists, biologists unite to expose how cancer spreads

Apr. 26, 2013 ? Cancer cells that can break out of a tumor and invade other organs are more aggressive and nimble than nonmalignant cells, according to a new multi-institutional nationwide study. These cells exert greater force on their environment and can more easily maneuver small spaces.

The researchers report in the journal Scientific Reports that a systematic comparison of metastatic breast-cancer cells to healthy breast cells revealed dramatic differences between the two cell lines in their mechanics, migration, oxygen response, protein production and ability to stick to surfaces. The researchers discovered new insights into how cells make the transition from nonmalignant to metastatic, a process that is not well understood.

The resulting catalogue of differences could someday help researchers detect cancerous cells earlier and someday prevent or treat metastatic cancer, which is responsible for 90 percent of all cancer deaths, according to the study. It was conducted by a network of 12 federally funded Physical Sciences-Oncology Centers (PS-OC) sponsored by the National Cancer Institute. PS-OC is a collaboration of researchers in the physical and biological sciences seeking a better understanding of the physical and chemical forces that shape the emergence and behavior of cancer.

A multi-institutional study including researchers from Princeton University's Physical Sciences-Oncology Center found that metastatic cancer cells are more aggressive and nimble than nonmalignant cells. The Princeton group used silicon-etched microchannels (above) to study the behavior and physical properties of cancer cells. In this device, metastatic cancer cells enter the narrow channels at one end and accelerate as they rapidly move down the channel. Such high motility is a hallmark of metastasis and also indicative of high glucose metabolism, another hallmark of cancer. (Image by Guillaume Lambert)

"By bringing together different types of experimental expertise to systematically compare metastatic and nonmetastatic cells, we have advanced our knowledge of how metastasis occurs," said Robert Austin, professor of physics and leader of the Princeton PS-OC, along with senior co-investigator Thea Tlsty of the University of California-San Francisco.

Researchers with the Princeton PS-OC, for instance, determined that metastatic cells, in spite of moving more slowly than nonmalignant cells, move farther and in a straighter line, Austin said. The investigators studied the cells' behavior in tiny cell-sized chambers and channels etched out of silicon and designed to mimic the natural environment of the body's interior.

"The mobility of these metastatic cells is an essential feature of their ability to break through the tough membrane [the extracellular matrix] that the body uses to wall off the tumor from the rest of the body," Austin said. "These cells are essentially jail-breakers."

The tiny silicon chambers were built using Princeton's expertise in microfabrication technology -- typically used to create small technologies such as integrated circuits and solar cells -- and are an example of the type of expertise that physicists and engineers can bring to cancer research, Austin said. For the current study, the Princeton team included physics graduate students David Liao and Guillaume Lambert, and postdoctoral researchers Liyu Liu and Saurabh Vyawahare. They worked closely with a research group led by James Sturm, Princeton's William and Edna Macaleer Professor of Engineering and Applied Science and director of the Princeton Institute for the Science and Technology of Materials (PRISM) where the microfabrication was done.

The Princeton PS-OC also includes collaborators at the Johns Hopkins University School of Medicine, the Salk Institute for Biological Studies and the University of California-Santa Cruz.

The nationwide PS-OC program aims to crack the difficulty of understanding and treating cancer by bringing in researchers from physics, engineering, computer science and chemistry, said Nastaran Zahir Kuhn, program manager for the PS-OC at the National Cancer Institute.

Other notable findings from the paper include that metastatic cells recover more rapidly from the stress of a low-oxygen environment than nonmetastatic cells, which is consistent with previous studies. Although the low-oxygen environment did kill many of the metastatic cells, the survivors rebounded vigorously, underscoring the likely role of individual cells in the spread of cancer. The study also looked at total protein production and detected proteins in the metastatic cells that are consistent with the physical properties such as mobility that malignant cells need to invade the extracellular matrix.

"The PS-OC program aims to bring physical sciences tools and perspectives into cancer research," Kuhn said. "The results of this study demonstrate the utility of such an approach, particularly when studies are conducted in a standardized manner from the beginning."

For the nationwide project, nearly 100 investigators from 20 institutions and laboratories conducted their experiments using the same two cell lines, reagents and protocols to assure that results could be compared. The experimental methods ranged from physical measurements of how the cells push on surrounding cells to measurements of gene and protein expression.

"Roughly 20 techniques were used to study the cell lines, enabling identification of a number of unique relationships between observations," Kuhn said.

For example, a technique known as atomic force microscopy indicated that metastatic cells are softer than nonmalignant cells whereas a different technique, traction force microscopy, suggested that metastatic cells exert more force on their surroundings, Kuhn said. Together these two findings may indicate that metastatic cells can exert force to stick to, migrate on and remodel the tough extracellular matrix that surrounds the tumor, while remaining flexible enough to squeeze through small spaces in that membrane.

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Story Source:

The above story is reprinted from materials provided by Princeton University. The original article was written by Catherine Zandonella.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Journal Reference:

  1. David B. Agus, Jenolyn F. Alexander, Wadih Arap, Shashanka Ashili, Joseph E. Aslan, Robert H. Austin, Vadim Backman, Kelly J. Bethel, Richard Bonneau, Wei-Chiang Chen, Chira Chen-Tanyolac, Nathan C. Choi, Steven A. Curley, Matthew Dallas, Dhwanil Damania, Paul C. W. Davies, Paolo Decuzzi, Laura Dickinson, Luis Estevez-Salmeron, Veronica Estrella, Mauro Ferrari, Claudia Fischbach, Jasmine Foo, Stephanie I. Fraley, Christian Frantz, Alexander Fuhrmann, Philippe Gascard, Robert A. Gatenby, Yue Geng, Sharon Gerecht, Robert J. Gillies, Biana Godin, William M. Grady, Alex Greenfield, Courtney Hemphill, Barbara L. Hempstead, Abigail Hielscher, W. Daniel Hillis, Eric C. Holland, Arig Ibrahim-Hashim, Tyler Jacks, Roger H. Johnson, Ahyoung Joo, Jonathan E. Katz, Laimonas Kelbauskas, Carl Kesselman, Michael R. King, Konstantinos Konstantopoulos, Casey M. Kraning-Rush, Peter Kuhn, Kevin Kung, Brian Kwee, Johnathon N. Lakins, Guillaume Lambert, David Liao, Jonathan D. Licht, Jan T. Liphardt, Liyu Liu, Mark C. Lloyd, Anna Lyubimova, Parag Mallick, John Marko, Owen J. T. McCarty, Deirdre R. Meldrum, Franziska Michor, Shannon M. Mumenthaler, Vivek Nandakumar, Thomas V. O?Halloran, Steve Oh, Renata Pasqualini, Matthew J. Paszek, Kevin G. Philips, Christopher S. Poultney, Kuldeepsinh Rana, Cynthia A. Reinhart-King, Robert Ros, Gregg L. Semenza, Patti Senechal, Michael L. Shuler, Srimeenakshi Srinivasan, Jack R. Staunton, Yolanda Stypula, Hariharan Subramanian, Thea D. Tlsty, Garth W. Tormoen, Yiider Tseng, Alexander van Oudenaarden, Scott S. Verbridge, Jenny C. Wan, Valerie M. Weaver, Jonathan Widom, Christine Will, Denis Wirtz, Jonathan Wojtkowiak, Pei-Hsun Wu. A physical sciences network characterization of non-tumorigenic and metastatic cells. Scientific Reports, 2013; 3 DOI: 10.1038/srep01449

Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/most_popular/~3/fvNmb0CGB6A/130426152558.htm

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Resident doc hours not tied to patient deaths: study

By Andrew M. Seaman

New York (Reuters Health) - Restricting the number of hours doctors-in-training are allowed to work without rest hasn't led to more patient deaths, according to a new study.

Researchers found no increase in deaths over the three years following a rules change that restricted resident doctors to working a maximum of 80 hours per week. In fact, the team reports a decline in deaths during the fourth and fifth years.

"This study is nice, because it shows that late after the 2003 changes there seems to be an improvement in mortality," said Dr. Sanjay Desai, director of the residency program at Johns Hopkins Hospital in Baltimore.

"But we don't know if this outcome is because of these changes or despite these changes. I think we need to know that to inform these types of decisions," Desai, who was not involved with the new study, told Reuters Health.

In 2003, concerns over errors caused by sleepy residents at hospitals led the Accreditation Council for Graduate Medical Education (ACGME) to restrict doctors-in-training to working a maximum of 80 hours per week.

The ACGME again restricted residents' working hours in 2011, when it said shifts can last no longer than 16 hours for the least-experienced doctors.

But reducing work hours for residents increases the number of times a patient's care changes hands, and there were concerns that would lead to more errors.

"Every time that occurs - just like every communication that occurs - there is some loss of information," said Desai. "The more hand offs there are, the more risk for an error to occur."

The new study's authors write in the Journal of General Internal Medicine that the new rules didn't have a great effect on the number of patients who died immediately after the change, but no one had looked at hospital death rates years later.

For the new study, the researchers - led by The University of Pennsylvania's Dr. Kevin Volpp in Philadelphia - used U.S. hospital data from before the first rules change in 2003, and compared that to data for the years 2003 to 2008.

Volpp and his colleagues looked at records for about 14 million people on Medicare, the government-run health insurance for the elderly and disabled, who were admitted to the hospital for heart attack, heart failure, gastrointestinal bleeding or surgery.

Overall, the number of deaths across conditions did not change significantly between the period 2000 to 2003 and the years 2003 through 2006, but deaths did fall during 2007 and 2008.

For example, about 17 percent of heart attack patients died within the 30 days following their hospital admission in 2000, before the rule change. About the same number of patients died immediately following the rule change in 2004, but that number fell to just 14 percent by 2008.

And about 10 percent of heart failure patients died within 30 days of being admitted to the hospital in 2000. As with heart attack patients, that number was about the same immediately following the rules change in 2004, but then fell to about 9 percent by 2008.

Desai said the results are reassuring, but the study cannot prove that the improvements were caused by the rule change.

"It's difficult, because it's retrospective. You can't identify how the change in policy correlates or relates to the changes they observed," he said.

Volpp and his colleagues could not be reached for comment before deadline.

Because the new study only looked at death rates through 2008, Desai told Reuters Health that it's also hard to say how this data would apply to the most recent change in maximum shift lengths dating from 2011.

"We as a community are highly interested in understanding this relationship better. These policies are in effect and changed relatively recently," he said. "I think there is a need to understand these relationships much more clearly."

SOURCE: http://bit.ly/14SMPpL Journal of General Internal Medicine, online April 18, 2013.

Source: http://news.yahoo.com/resident-doc-hours-not-tied-patient-deaths-study-214931933.html

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শুক্রবার, ২৬ এপ্রিল, ২০১৩

Culture vultures: 'When in Rome' applies to monkey's too

Apr. 25, 2013 ? The human tendency to adopt the behaviour of others when on their home territory has been found in non-human primates.

Researchers at the University of St Andrews observed 'striking' fickleness in male monkeys, when it comes to copying the behaviour of others in new groups. The findings could help explain the evolution of our human desire to seek out 'local knowledge' when visiting a new place or culture.

The new discovery was made by Dr Erica van de Waal and Professor Andrew Whiten of the University of St Andrews, along with Christ?le Borgeaud of the University of Neuch?tel.

Professor Whiten commented, "As the saying goes, 'When in Rome, do as the Romans do'. Our findings suggest that a willingness to conform to what all those around you are doing when you visit a different culture is a disposition shared with other primates."

The research was carried out by observing wild vervet monkeys in South Africa. The researchers originally set out to test how strongly wild vervet monkey infants are influenced by their mothers' habits.

But more interestingly, they found that adult males migrating to new groups conformed quickly to the social norms of their new neighbours, whether it made sense to them or not.

Professor Whiten commented, "The males' fickleness is certainly a striking discovery. At first sight their willingness to conform to local norms may seem a rather mindless response -- but after all, it's how we humans often behave when we visit different cultures.

"It may make sense in nature, where the knowledge of the locals is often the best guide to what are the optimal behaviours in their environment, so copying them may actually make a lot of sense."

In the initial study, the researchers provided each of two groups of wild monkeys with a box of maize corn dyed pink and another dyed blue. The blue corn was made to taste repulsive and the monkeys soon learned to eat only pink corn. Two other groups were trained in this way to eat only blue corn.

A new generation of infants were later offered both colours of food -- neither tasting badly -- and the adult monkeys present appeared to remember which colour they had previously preferred.

Almost every infant copied the rest of the group, eating only the one preferred colour of corn.

The crucial discovery came when males began to migrate between groups during the mating season.

The researchers found that of the ten males who moved to groups eating a different coloured corn to the one they were used to, all but one switched to the new local norm immediately.

The one monkey who did not switch, was the top ranking in his new group who appeared unconcerned about adopting local behavior.

Dr van de Waal conducted the field experiments at the Inkawu Vervet Project in the Mawana private game reserve in South Africa. She became familiar with all 109 monkeys, making it possible for her to document the behaviour of the males who migrated to new groups.

She said, "The willingness of the immigrant males to adopt the local preference of their new groups surprised us all. The copying behaviour of both the new, na?ve infants and the migrating males reveals the potency and importance of social learning in these wild primates, extending even to the conformity we know so well in humans."

Commenting on the research, leading primatologist Professor Frans de Waal, of the Yerkes Primate Center of Emory University, said that the study "is one of the few successful field experiments on cultural transmission to date, and a remarkably elegant one at that."

The study has been hailed by leading primate experts as rare experimental proof of 'cultural transmission' in wild primates to date. The research is published April 25 by the journal Science.

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The above story is reprinted from materials provided by University of St. Andrews, via EurekAlert!, a service of AAAS.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Journal Reference:

  1. E. van de Waal, C. Borgeaud, A. Whiten. Potent Social Learning and Conformity Shape a Wild Primate's Foraging Decisions. Science, 2013; 340 (6131): 483 DOI: 10.1126/science.1232769

Note: If no author is given, the source is cited instead.

Disclaimer: Views expressed in this article do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/3VvzwGJAXCM/130425142351.htm

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After brain injury, new astrocytes play unexpected role in healing

Apr. 24, 2013 ? The production of a certain kind of brain cell that had been considered an impediment to healing may actually be needed to staunch bleeding and promote repair after a stroke or head trauma, researchers at Duke Medicine report.

These cells, known as astrocytes, can be produced from stem cells in the brain after injury. They migrate to the site of damage where they are much more effective in promoting recovery than previously thought. This insight from studies in mice, reported online April 24, 2013, in the journal Nature, may help researchers develop treatments that foster brain repair.

"The injury recovery process is complex," said senior author Chay T. Kuo, M.D., PhD, George W. Brumley Assistant Professor of Cell Biology, Pediatrics and Neurobiology at Duke University. "There is a lot of interest in how new neurons can stimulate functional recovery, but if you make neurons without stopping the bleeding, the neurons don't even get a chance. The brain somehow knows this, so we believe that's why it produces these unique astrocytes in response to injury."

Each year, more than 1.7 million people in the United States suffer a traumatic brain injury, according to the Centers for Disease Control and Prevention. Another 795,000 people a year suffer a stroke. Few therapies are available to treat the damage that often results from such injuries.

Kuo and colleagues at Duke are interested in replacing lost neurons after a brain injury as a way to restore function. Once damaged, mature neurons cannot multiply, so most research efforts have focused on inducing brain stem cells to produce more immature neurons to replace them.

This strategy has proved difficult, because in addition to making neurons, neural stem cells also produce astrocytes and oligodendrocytes, known as glial cells. Although glial cells are important for maintaining the normal function of neurons in the brain, the increased production of astrocytes from neural stem cell has been considered an unwanted byproduct, causing more harm than good. Proliferating astrocytes secrete proteins that can induce tissue inflammation and undergo gene mutations that can lead to aggressive brain tumors.

In their study of mice, the Duke team found an unexpected insight about the astrocytes produced from stem cells after injury. Stem cells live in a special area or "niche" in the postnatal/adult brain called the subventricular zone, and churn out neurons and glia in the right proportions based on cues from the surrounding tissue.

After an injury, however, the subventricular niche pumps out more astrocytes. Significantly, the Duke team found they are different from astrocytes produced in most other regions of the brain. These cells make their way to the injured area to help make an organized scar, which stops the bleeding and allows tissue recovery.

When the generation of these astrocytes in the subventricular niche was experimentally blocked after a brain injury, hemorrhaging occurred around the injured areas and the region did not heal. Kuo said the finding was made possible by insights about astrocytes from Cagla Eroglu, PhD, whose laboratory next door to Kuo's conducts research on astrocyte interactions with neurons.

"Cagla and I started at Duke together and have known each other since our postdoctoral days," Kuo said. "To have these stem cell-made astrocytes express a unique protein that Cagla understands more than anyone else, it's just a wonderful example of scientific serendipity and collaboration."

Additionally, Kuo said first author Eric J. Benner, M.D., PhD, a former postdoctoral fellow who now has his own laboratory at Duke, provided key clinical correlations on brain injury as a physician-scientist and practicing neonatologist in the Jean and George Brumley Jr. Neonatal-Perinatal Research Institute.

"We are very excited about this innate flexibility in neural stem cell behavior to know just what to do to help the brain after injury," Kuo said. "Since bleeding in the brain after injury is a common and serious problem for patients, further research into this area may lead to effective therapies for accelerated brain recovery after injury."

In addition to Kuo, Eroglu and Benner, authors include Dominic Luciano, Rebecca Jo, Khadar Abdi, Patricia Paez-Gonzalez, Huaxin Sheng, David Warner and Chunlei Liu.

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Story Source:

The above story is reprinted from materials provided by Duke University Medical Center.

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Journal Reference:

  1. Eric J. Benner, Dominic Luciano, Rebecca Jo, Khadar Abdi, Patricia Paez-Gonzalez, Huaxin Sheng, David S. Warner, Chunlei Liu, Cagla Eroglu, Chay T. Kuo. Protective astrogenesis from the SVZ niche after injury is controlled by Notch modulator Thbs4. Nature, 2013; DOI: 10.1038/nature12069

Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/health_medicine/genes/~3/zIrBOIqCR0I/130424132707.htm

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