Monday, April 29, 2013

Patterned hearts: Bioengineers create rubber-like material bearing micropatterns for stronger, more elastic hearts

Apr. 29, 2013 ? A team of bioengineers at Brigham and Women's Hospital (BWH) is the first to report creating artificial heart tissue that closely mimics the functions of natural heart tissue through the use of human-based materials. Their work will advance how clinicians treat the damaging effects caused by heart disease, the leading cause of death in the United States.

"Scientists and clinicians alike are eager for new approaches to creating artificial heart tissues that resemble the native tissues as much as possible, in terms of physical properties and function," said Nasim Annabi, PhD, BWH Renal Division, first study author. "Current biomaterials used to repair hearts after a heart attack and other cardiovascular events lack suitable functionality and strength. We are introducing an alternative that has the mechanical properties and functions of native heart tissue."

The study was published online on April 26, 2013 in Advanced Functional Materials.

The researchers created MeTro gel-an advanced rubber-like material made from tropoelastin, the protein in human tissues that makes them elastic. The gel was then combined with microfabrication techniques to generate gels containing well-defined micropatterns for high elasticity.

The researchers then used these highly elastic micropatterned gels to create heart tissue that contained beating heart muscle cells.

"The micropatterned gel provides elastic mechanical support of natural heart muscle tissue as demonstrated by its ability to promote attachment, spreading, alignment, function and communication of heart muscle cells," said Annabi.

The researchers state that MeTro gel will provide a model for future studies on how heart cells behave. Moreover, the work lays the foundation for creating more elaborate 3D versions of heart tissue that will contain vascular networks.

"This can be achieved by assembling tandem layers of micropatterned MeTro gels seeded with heart muscles cells in different layers," said Ali Khademhosseini, PhD, BWH Division of Biomedical Engineering, co-senior study author. "As we continue to move forward with finding better ways to mend a broken heart, we hope the biomaterials we engineer will allow us to successfully address the limitations of current artificial tissues."

This research was supported by the National Institutes of Health (HL092836, DE019024, EB012597, AR057837, DE021468, HL099073, EB008392); National Health and Medical Research Council; CRC for Polymers; BHP-Billiton Fulbright Scholarship; National Science Foundation; Office of Naval Research Young National Investigator Award; Presidential Early Career Award for Scientists and Engineers; Australian Research Council; and Australian Defense Health Foundation and National Health and Medical Research Council.

Anthony Weiss, PhD, University of Sydney, co-senior study author is scientific founder of Elastagen Pty Ltd.

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Story Source:

The above story is reprinted from materials provided by Brigham and Women's Hospital.

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


Journal Reference:

  1. Nasim Annabi, Kelly Tsang, Suzanne M. Mithieux, Mehdi Nikkhah, Afshin Ameri, Ali Khademhosseini, Anthony S. Weiss. Highly Elastic Micropatterned Hydrogel for Engineering Functional Cardiac Tissue. Advanced Functional Materials, 2013; DOI: 10.1002/adfm.201300570

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/heart_disease/~3/OQiD_HD9WH0/130429133652.htm

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Affirmations for Self-Improvement | tmcelvany - Caverlynell8's blog

This article talks about how ?the more we practice having thoughts or beliefs that benefit our well-being, the more naturally those thoughts and beliefs will play themselves out in our everyday life,? as long as these affirmations you repeat to yourself are ?congruent with reality, and aligned with your core values.?

This is a very corny article on the surface, but the message about mindfulness and the list of affirmations are great. Really try to give this article a chance and see what it has to offer for your own life.

Trisha McElvany

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Source: http://tmcelvany.wordpress.com/2013/04/27/affirmations-for-self-improvement/

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Scenes From ?Nerd Prom?: America?s Celebrities and Politicians Mingle at Glam Correspondents? Dinner

The annual gathering not far from the White House that brings together journalists, government officials, politicians and media personalities for what's usually an evening of light-hearted banter and celebrity gawking has begun.

Often referred to as "Nerd Prom," the annual White House Correspondents' Dinner is being hosted this year by entertainer, comedian and late-night TV talk-show host Conan O'Brien.

Here are some images from the event so far:

Scenes From Nerd Prom: Americas Celebrities and Politicians Mingle at Glam Correspondents DinnerCorrespondents' Dinner

US first lady Michelle Obama (2L) and Michael Clemente (2R) of FOX listen as comedian Conan O'Brien (L) and US President Barack Obama joke during the White House Correspondents' Association Dinner April 27, 2013 in Washington, DC. (Photo: AFP/Getty Images)

Scenes From Nerd Prom: Americas Celebrities and Politicians Mingle at Glam Correspondents DinnerCorrespondents' Dinner

Comedian Conan O'Brien (L) and US first lady Michelle Obama joke during the White House Correspondents' Association Dinner April 27, 2013 in Washington, DC. (Photo: AFP/Getty Images)

Scenes From Nerd Prom: Americas Celebrities and Politicians Mingle at Glam Correspondents DinnerCorrespondents Dinner

US Supreme Court Associate Justice Antonin Scalia poses for a photo during the White House Correspondents' Association Dinner April 27, 2013 in Washington, DC. (Photo: AFP/Getty Images)

Scenes From Nerd Prom: Americas Celebrities and Politicians Mingle at Glam Correspondents DinnerWHCD

Piers Morgan and Gerard Butler attend the White House Correspondents' Association Dinner at the Washington Hilton on April 27, 2013 in Washington, DC. (Photo: Getty Images)

Scenes From Nerd Prom: Americas Celebrities and Politicians Mingle at Glam Correspondents DinnerCorrespondents Dinner

Ben Sherwood, Ty Burrell, Sofia Vergara, Nick Loeb and Holly Burrell attend ABC News, Yahoo! News, Univision Pre-White House Correspondents Dinner cocktail reception at Washington Hilton on April 27, 2013 in Washington, DC. (Photo: Getty Images for Yahoo! News)

Scenes From Nerd Prom: Americas Celebrities and Politicians Mingle at Glam Correspondents DinnerWHCD

Korie Robertson and Willie Robertson attends the White House Correspondents' Association Dinner at the Washington Hilton on April 27, 2013 in Washington, DC. (Photo: Getty Images)

Scenes From Nerd Prom: Americas Celebrities and Politicians Mingle at Glam Correspondents DinnerCorrespondents Dinner

(L-R) Kerry Washington, Betsy Beers and Shonda Rhimes attend ABC News, Yahoo! News, Univision Pre-White House Correspondents Dinner cocktail reception at Washington Hilton on April 27, 2013 in Washington, DC. (Photo: Getty Images for Yahoo! News)

Scenes From Nerd Prom: Americas Celebrities and Politicians Mingle at Glam Correspondents DinnerCorrespondents Dinner

Actor Kevin Spacey and actress Julia Louis-Dreyfus talk during the White House Correspondents' Association Dinner April 27, 2013 in Washington, DC. (Photo: AFP/Getty Images)

Scenes From Nerd Prom: Americas Celebrities and Politicians Mingle at Glam Correspondents DinnerWHCD

U.S. Attorney General Eric Holder and Sharon Malone attend ABC News, Yahoo! News, Univision Pre-White House Correspondents Dinner cocktail reception at Washington Hilton on April 27, 2013 in Washington, DC. (Photo: Getty Images for Yahoo! News)

Scenes From Nerd Prom: Americas Celebrities and Politicians Mingle at Glam Correspondents DinnerCorrespondents Dinner

(L-R) Aasif Mandvi, Charles Esten, Connie Britton and George Stephanopoulos attend ABC News, Yahoo! News, Univision Pre-White House Correspondents Dinner cocktail reception at Washington Hilton on April 27, 2013 in Washington, DC. (Photo: Getty Images for Yahoo! News)

The Associated Press contributed to this report.? It will be updated.

Source: http://news.yahoo.com/scenes-nerd-prom-america-celebrities-politicians-mingle-glam-022037171.html

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Sunday, April 28, 2013

Living with Google Glass, Day Three: Security Checkpoint

You might be inclined to think that airport security is not the best place to wear Google Glass. You'd probably be right, but given the amount that I travel it was pretty-well inevitable that I'd cross through some security checkpoint before the course of this testing would be through.

I'm honored to be part of the X-Prize Visioneering conference this week, a gathering of incredible minds putting their considerable brainpower behind the creation of competitions to make the world a better place. But, to take part I'd have to get out to California, and that meant yet another long flight across the country -- and another trip through the full-body scanner. The question is, how would the folks at airport security react to it?

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Source: http://feeds.engadget.com/~r/weblogsinc/engadget/~3/Dbje8CQyl-I/

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Einstein's theory of general relativity gets most extreme test yet

In their efforts to crack the mysteries of gravity, scientists continue to probe Albert Einstein's theory of general relativity. The latest test involved a curious binary star system.

By Pete Spotts,?Staff writer / April 25, 2013

Snow falls on the Albert Einstein Memorial Statue at the National Academy of Sciences in Washington D.C. during the early morning hours in February 2010. Scientists continue to probe Einstein's theory of general relativity, in their efforts to crack the mysteries of gravity.

Hyungwon Kang/Reuters/File

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The most massive neutron star known and its tightly orbiting companion, a wimp of a white-dwarf, have provided one of the most extreme tests yet of Einstein's theory of general relativity.

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The theory has again passed with flying colors ? for now.

Although the theory has cleared test after test over the past century, researchers keep trying to find its limits. They don't think it's wrong, just incomplete.

The other basic forces of nature ? the strong force, which binds particles in an atom's nucleus, the weak force, which governs radioactive decay, and electromagnetism ? have found explanations in quantum physics. Gravity is the only force that so far has resisted assimilation.

Many physicists are convinced that resistance is futile and that at some point gravity will yield to a quantum-physics explanation. But that breakdown may only become apparent under the most extreme conditions ? conditions no human technology can establish.

So researchers turn to the cosmos for their extremes. And in the binary pair identified as PSR J0348+0432, they've found perhaps the most extreme conditions yet.

The pair is located some 7,000 light-years from Earth. The neutron star is all that remains of a star at least 10 times more massive than the sun that ended its luminous run in an explosion known as a supernova. Astronomers estimate that the neutron star is about 12 miles across. But it is so dense that a thimble full of the matter the explosion left behind would weigh about 1 billion tons.

It's white dwarf companion is the slowly cooling end state of a star like the sun.

White dwarfs are dense as well, typically packing roughly half of the sun's mass into an object slightly larger than Earth. This one, however is a lightweight, tipping the scales at about 17 percent of the sun's mass into an object roughly seven times larger than Earth.

Follow-up observations at radio and visible wavelengths revealed a duo that orbits its combined center of mass once every 2.46 hours. Considering the two objects are about a 500,000 miles apart, that's a mighty brisk pace.

"What we were looking for were changes in the orbital period," Dr. Lynch explains, referring to the time it takes for the two objects to orbit each other.

Those changes arise because the act of orbiting dissipates energy. That energy leaves in the form of gravity waves ? ripples in space-time, the very fabric of the cosmos. These ripples travel through space almost as though some interstellar housekeeper was shaking out the sheets.

This loss of energy shortens the time it takes to complete an orbit, signaling that the two objects are slowing and inching closer to one another. Different theories of gravity offer up different predictions for the rate at which the orbits of objects as close and as massive as these decay.

The key issue: "Can we measure that number precisely enough that we can say this agrees with general relativity or disagrees?" Lynch says. After careful measurements using the Arecibo Radio Telescope in Puerto Rico to track the pulsar, and the Very Large Telescope in Chile to track the white dwarf, the answer is: Yes we can, and it agrees with general relativity.

Beyond the test of Einstein's theory of general relativity, the system also poses a challenge to ideas about how binary systems form, Lynch adds.

The neutron star was discovered in 2009 as researchers at the National Radio Astronomy Observatory's facility at Green Bank, W. Va., combed through data gathered two years earlier during a hunt for rapidly spinning neutron stars, dubbed pulsars.

Pulsars earned their name because they emit radio waves as they spin, acting like beacons in the cosmos. Researchers were able to detect this neutron star because it, too, is a pulsar, spinning once every 39 milliseconds.

The team, led by John Antoniadis, with the Max Planck Institute for Radio Astronomy in Bonn, Germany, also combed through data gathered by the Sloan Digital Sky Survey to see if anything showed up in the pulsar's vicinity at visible wavelengths. That's when they found the pulsar's companion.

Astronomers have found other pulsars that spin as fast as the pulsar in the PSR J0348+0432 system, he says. But when such pulsars appear in binary systems, their companions tend to have more mass.

It's the combination of a pulsar with a relatively long spin period in a tight orbit with a relatively low-mass white dwarf "that makes this a little strange," he says, adding that the combination suggests that the system had a unique evolutionary history,

So how fast is the orbital period decreasing? The pace is slowing by about 2.7 ten-trillionths of a second per second. At that rate, some 400 million years from now, the binary system will become an ultra-compact binary system with X-rays for a beacon, the team suggests.

If the neutron star ends up near the high end of the mass scale for such objects as it draws matter from its partner, an eventual merger with the white dwarf could lead to a catastrophic collapse into a black hole ? an object whose gravity is so strong that not even light, traveling at 186,000 miles a second, can escape. If the neutron star star ends up with a more middling mass, the white dwarf in essence would be considered a planet once it cools sufficiently.

A formal report of this test of Einstein's theory of general relativity was published Thursday in the journal Science.

Source: http://rss.csmonitor.com/~r/feeds/science/~3/WR6kqBKKYj0/Einstein-s-theory-of-general-relativity-gets-most-extreme-test-yet

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Saturday, April 27, 2013

Select images from Bangladesh building collapse

AAA??Apr. 26, 2013?2:30 AM ET
Select images from Bangladesh building collapse
By The Associated Press?THE ASSOCIATED PRESS STATEMENT OF NEWS VALUES AND PRINCIPLES?By The Associated Press

A Bangladeshi woman survivor is carried from the rubble by rescuers at the site of a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh, Thursday, April 25, 2013. By Thursday, the death toll reached at least 194 people as rescuers continued to search for injured and missing, after a huge section of an eight-story building that housed several garment factories splintered into a pile of concrete.(AP Photo/Kevin Frayer)

A Bangladeshi woman survivor is carried from the rubble by rescuers at the site of a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh, Thursday, April 25, 2013. By Thursday, the death toll reached at least 194 people as rescuers continued to search for injured and missing, after a huge section of an eight-story building that housed several garment factories splintered into a pile of concrete.(AP Photo/Kevin Frayer)

In this image taken from AP video, garment worker Mohammad Altab moans to rescuers for help while trapped between concrete slabs and next to two corpses in a garment factory that collapsed Wednesday in Savar, near Dhaka, Bangladesh, Thursday, April 25, 2013. Deep cracks visible in the walls of the Bangladesh garment building had compelled police to order it evacuated a day before it collapsed, officials said Thursday. More than 200 people were killed when the eight-story building splintered into a pile of concrete because factories based there ignored the order and kept more than 2,000 people working. (AP Photo/AP video)

A Bangladeshi rescuer looks out from a hole cut in the concrete as he looks for survivors at the site of a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh, Thursday, April 25, 2013. By Thursday, the death toll reached at least 194 people as rescuers continued to search for injured and missing, after a huge section of an eight-story building that housed several garment factories splintered into a pile of concrete.(AP Photo/Kevin Frayer)

Bangladeshis watch the rescue operations at the site of a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh, Thursday, April 25, 2013. By Thursday, the death toll reached at least 194 people as rescuers continued to search for injured and missing, after a huge section of an eight-story building that housed several garment factories splintered into a pile of concrete. (AP Photo/Kevin Frayer)

A Bangladeshi woman survivor is lifted out of the rubble by rescuers at the site of a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh, Thursday, April 25, 2013. By Thursday, the death toll reached at least 194 people as rescuers continued to search for injured and missing, after a huge section of an eight-story building that housed several garment factories splintered into a pile of concrete.(AP Photo/Kevin Frayer)

Garment workers trapped in the rubble plead for help. Rescuers, some in hard-hats and others wearing slippers, pick through the broken concrete. They fashion colorful cloth into makeshift stretchers that hold and lift hurt survivors and dead victims.

Thousands of relatives wail their grief and worry outside a collapsed building in Savar, Bangladesh, where at least 275 people were killed and more than 2,000 were rescued.

It is the worst-ever disaster in Bangladesh's $20 billion garment industry that supplies global retailers but has a notorious safety record.

Here are some images from the scene.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/3d281c11a96b4ad082fe88aa0db04305/Article_2013-04-26-AS-Bangladesh-Building-Collapse-Photo-Gallery/id-6c96fa4661564d5a8943b053268b0157

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Friday, April 26, 2013

Viber exploit lets attackers bypass Android lock screens, for now (video)

Viber exploit lets users bypass Android lock screens, a fix is on the way video

If you're an Android user who prefers Viber for VoIP and messaging, you may not want to leave your phone unattended in the near future. Bkav Internet Security has discovered an exploit that will bypass the lock screen on Android phones new and old (including the Nexus 4) as long as pop-up notifications are active. While the exact actions vary from phone to phone, all that's really needed is an incoming message or two, a handful of taps and the back button to reach the home screen. App users can disable the pop-ups as a short-term workaround, although they thankfully won't have to do that for long when Viber promises that a patch is on the way. There's only a small chance that a malicious attacker will both get their mitts on your phone and know that you've got Viber installed, but we'd advise against using statistical probability as a security measure.

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Value Investing in Graham-and-Buffettville: Strayer Education ...

The for-profit education industry has been beaten down considerably in the recent past. I am almost sure that many value investors have done some research in this section of the market in search for bargains. There are numerous articles on companies such as Apollo, ITT Education, Career Education, Corinthian Colleges, Capella University and etc. Most articles conclude that for-profit education stocks are cheap based on valuation metrics but the regulatory risks are also very high. I will not repeat what has been widely known by the market participants. My thesis is built more on the qualitative analysis.?

I started my research on the for-profit education a few months ago. My goal was to find a company that combines quality and value in the for-profit education industry. My initial list includes Strayer Education, ITT Education, Apollo, Career Education, Corinthian Colleges and Capella University. After reading some 10ks, earnings call transcripts and articles, I've narrowed it down to Strayer Education and Capella University. I eliminated the others mainly based on qualitative issues. For example, while reading Apollo's annual report, I noticed that management claims that Apollo has?"aligned our admissions practices to better support our students's success by eliminating enrollment measures as a factor in the evaluation and compensation of our admission advisory teams." ?This sounds like a good intention. However, new regulation specifically states that "a school participating in Title IV programs may not pay any commission, bonus, or other incentive payments to any person involved in student recruitment or admissions or awarding of Title IV program funds, if such payments are based in any part directly or indirectly on success in enrolling students or obtaining student financial aid." If a management team blatantly writes misrepresenting statement in the annual letter to shareholders, I don't think there is much integrity in the business. Other examples include ITT Education's abysmal reviews from its students, Corinthian Colleges' officials' engagement in a no-holds-barred campaign to drive down their schools' rates by pushing former students to obtain temporary?forbearance?and deferments on their loans. The for-profit education industry is one in which greedy management can take advantage of the?underprivileged students even though education in general is supposed to have noble intention. ?No wonder the regulators have been more stringent. Unsurprisingly, on a quantitative level, such as manifested by the cohort default rate, schools with questionable management also score very low. The 3 year cohort default rate for the 2009 class is 26.4%, 28.8% and 34% for for Apollo, Corinthian College and ITT education whereas for Strayer and the Capella, the rates are only 13.9% and 9.70%.?

The more research I've done, the more Strayer Education stands out from its peers, both from a qualitative perspective and quantitative perspective. So after months of research, I've decided to select Strayer Education within the for-profit education industry as my recommendation.?

Business Description:

Strayer Education, Inc. was founded in 1892. Strayer University is an institution of higher learning that offers undergraduate and graduate degree programs in business administration, accounting, information technology, health care, education, and public administration at over 60 physical campuses. The Company is a for-profit post-secondary education services corporation. Its mission is to make post-secondary education achievable and convenient for working adults in today's economy. It works to fulfill this mission by offering a variety of academic programs through its wholly-owned subsidiary Strayer University, Inc., both in traditional classroom courses and through Strayer University Online. Strayer University makes post-secondary education accessible to working adults who were previously unable to take advantage of higher education opportunities. Strayer University provides access to higher education to working adult students. Marketing activities include direct mail, Internet marketing, marketing to its existing students, print and broadcast advertising, student referrals, and corporate and government outreach activities. Strayer University maintains booths and information tables at appropriate conferences and expos, as well as at transfer days at community colleges. It has a total of 92 campuses in various stages of growth. As an institution of higher education accredited by Middle States and operating in multiple jurisdictions, Strayer University is subject to accreditation rules and varying state licensing and regulatory requirements.

Quality of Business:

Strayer Education's moat fundamentally comes from a top-notch management team. The current Chairman and CEO Robert Silberman (will step down as the CEO but will remain Chairman of the Board), worked as the COO of Cal Energy, which was owned by Berkshire Hathaway, before he was recruited as the CEO of Strayer Education. He has done a remarkable job building up Strayer Education's moat in the for-profit education business. In his book The Investment Checklist, Michael Shearn enumerated various instances where Robert Silberman showed integrity and great leadership. Here is an excerpt from the book, ?"When Robert Silberman took over as CEO of Strayer Education in 2001, he said he was not going to focus on any of the metrics that generally drive public company valuations, such as revenue growth, operating income growth and margin expansion. The only thing that was going to drive real sustainable long-term value of owners was the intangible value of Strayer University and the to increase the intangible value, you increase the level of learning outcomes." ?

Strayer's annual reports also stand out from those of its peers. Each year's annual report contains a reprint of the Strayer's Business Model from the 2001 letter to shareholders, which clearly outlines

  • What Strayer does
  • How Strayer's business model generates both reported net income and owner?s distributable cash flow, and?
  • Strayer's strategy to increase the intrinsic value of your investment in Strayer Education.?
Robert Silberman also writes letters to shareholders every year and his writings are vastly different from the CEOs of Strayer's peers. The letter starts with the past year's result, detailing both challenges and accomplishments. Unlike his peers, Silberman goes in depth to analyze the reasons behind the challenges and accomplishments so that shareholders can get a clear understanding of the overall picture. Here is an example from the 2011 letter in which he offers his insights on the decline in student enrollment, which is very different from the public perception.

After ?reviewing ?all ?the ?data, ?I ?believe ?that ?the ?most significant factor behind Strayer University?s extended decline in new student enrollments during 2011 must have ?been ?the ?sustained ?level ?of ?distress ?across ?the economy, and specifically the markedly higher level of unemployment in our target student population. Real unemployment in this country among 25?50 year olds without ?a ?college ?degree ?was ?a ?devastating ?22% ?in 2011, up from 6% in 2008. It is even higher in some of ?our ?newer ?geographic ?markets ?in ?the ?industrial Midwest. We ?know ?from ?surveying ?our ?students ?that the large commitments of time and finances necessary to ?succeed ?in ?our ?undergraduate ?academic ?programs are ?often ?too ?daunting ?for ?those ?adults ?who ?have ?no steady ?means ?of ?income ?(particularly ?those ?with dependents). We also know from our surveys that most of ?our ?undergraduate ?students ?have ?contemplated returning ?to ?college ?for ?upwards ?of ?two ?years ?before making the final commitment. They have had to truly??screw ?their ?courage ?to ?the ?sticking ?point? ?before actually enrolling. Therefore, in many ways, there is a?lag factor to the effect of serious economic disruptions on our new student enrollments. As I have written in this letter ?in ?the ?past, ?while ?some ?level ?of ?economic insecurity ?does ?indeed ?drive ?working ?adults ?back ?to college, sustained unemployment does not, at least not to Strayer University.?

Silberman also summarizes the capital allocation results from the prior year and lays out the plan for next year .Capital allocation is extremely important for any business yet rarely does a CEO of a public company present the result of prior year's capital allocation in a shareholder-friendly way. This transparency by Silberman is another indicator of management quality.

At the end each year's annual report, Strayer's Heritage reprinted from the 1912 student catalog is always attached. This section speaks the character of the business. Below is the full catalog:

This catalog was written with a view of setting before the men and women of this community some of the?advantages of a business education, and of acquainting them with the superior facilities of this school for giving high-grade business training.?

The courses have been designed and presented to meet the needs of the business office of today. The teachers are men and women who are specialists in their respective subjects. The school rooms have been chosen and equipped with special reference to light, comfort and sanitation, so as to make it an ideal place for study.

We ask that the public, in determining which school it shall attend, to consider the facts in connection with?this school, as are outlined in this catalog and supplementary literature. It is twenty years old. It has grown?steadily ?since ?the ?beginning. ?It ?attributes ?its ?growth ?to ?correct ?ideals, ?careful ?management ?and ?successful, enthusiastic, and rapidly increasing alumni.

While it is essential to its success that a school should give thorough instruction in the subjects that comprise?its courses, yet the school that does ?only this, falls short of its full mission. The development of those traits of?character which make for reliability in business and good citizenship are the peculiar province of the school as well as the home. This school, then, has nothing in common, can have nothing in common, with those so-called business schools offering cheap and superficial courses. Such courses, while inexpensive, and possibly of short duration, cannot result in anything but disappointment in the end.

This ?school, ?then, ?stands ?for ?high ?ideals, ?it ?courts ?investigation, ?welcomes ?comparison, ?and ?stands by ?its ?promises. ?It ?is ?a ?school ?to ?which ?you ?may ?attend ?with ?the ?knowledge ?that ?you ?will ?be ?in ?pleasant surroundings, will be accorded fair treatment, and will be given thorough and painstaking instruction.

Finally, in presenting this catalog, we want to thank a discerning public for its support, and assure it that?we shall endeavor to continue to merit the bountiful confidence it has heretofore placed in us.?

Regulatory Compliance:

Regulatory compliance is the biggest perceived risk in this industry. Although this risk is high for companies like Corinthian, Career Education and ITT Education, Strayer is probably one of the best positioned companies in the for-profit industry and I think it is a good thing that regulators are spending more time and effort addressing the questionable practice by a lot for-profit educational companies. Strayer's risk of non-compliance is very low in my opinion. The most recent 3 year Cohort Default rate is 13.9%, well below the 25% threshhold and the revenue% from Title IV loans is only 76%.

Also, as noted in the 2012 annual report,

Senator Tom Harkin (D-Iowa), Chairman of the U.S. Senate Committee ?on ?Health, ?Education, ?Labor ?and ?Pensions (HELP). Senator Harkin?s committee staff conducted a two year investigation into tax-paying, investor-funded post-secondary ?educational ?institutions ?and ?concluded that, ?Strayer?s ?performance ?is ?one ?of ?the ?best ?of ?any institution ?examined, ?and ?it ?appears ?that ?students ?are faring well at this degree-based college.??


For the last three years the?Department of Education has reviewed the regulations?that govern how for-profit universities qualify to receive?the proceeds of Federal student loans as tuition revenue.
The Department ultimately adopted a number of new?regulations, the most important of which (the ?Gainful?

Employment ?Regulation?) ?measures ?the ?earnings ?of?

graduates of for-profit universities and compares those?

earnings to the debt levels the graduates incurred to?

finance ?their ?education. There ?is ?a ?rather ?complicated

process for measurement, and the first full measurement


year ?was ?not ?slated ?to ?be ?until ?2012, ?but ?the?

Department released in 2012 ?illustrative? data for all?

for-profit ?universities ?for ?the ?year ?2011, ?so ?as ?to ?give?

these universities an early look at their compliance. I am?

pleased to report that using the illustrative 2011 data, all?

of Strayer University?s programs passed the Gainful?

Employment ?Regulation ?with ?flying ?colors. ?Although?

the regulation has since been declared invalid by a U.S.??

District ?Court, ?and ?the ?Department ?has ?not ?yet?

announced its plans going forward, we remain confident?

in our ability to run our university in compliance with?

what we believe to be the Department?s intent. ?


Valuation:

Based on my observation and understanding of the business, Free Cash Flow is probably best metric to be used to value Strayer Education. FCF per share was $3.93 10 years ago, peaked at about $10.45 during 2011 and dropped?precipitously?to just above $5 per share during 2012. On a statistical basis, if we take the lowest price of Strayer stock in the past 10 years, ?divided by FCF per share, the average P/FCF using the lowest price is about 14. ?If we take the highest price of Strayer's stock in the past 10 years, divided by FCF per share, the average P/FCF using the highest price is about 25. ?Where does the P/FCF stand now? It's about 10 times, or more than 20% lower than the historical average using the lowest price during each of the past 10 years. Looking out 5 years, if the industry?stabilizes?and unemployment drops, Strayer can earn $8 FCF per share and apply a 14 times multiple, we get $112 per share. 133% higher than current price and ~18.5% compounded annually.

We can also use the P/S multiple as revenue fluctuate less than FCF and earnings. Again, on a statistical basis, if we take the lowest price of Strayer stock in the past 10 years, ?divided by revenue per share, the average P/S using the?lowest?price?is about 3.6. ?If we take the highest price of Strayer's stock in the past 10 years, divided by revenue per share, the average P/S using the?highest price?is about 6.64. ?Where does the P/S stand now? It's about 0.9, or more than 75% lower than the historical average using the?lowest price?during each of the past 10 years. Even if revenue per share stays the same at $50 per share and assume things revert back to the mean in 5 years, Strayer should be trading at $180 per share, 275% higher than the current price and ~30% compounded annually.

Strayer does look cheap from a statistical perspective. However, as Robert Silberman has candidly mentioned in the most recent annual report, things may very well not get better in the next several years. In this case, the return can be expected from shares repurchase (which is increased to $150 million). Assuming the shares are repurchased at $50 per share, resulting in a 3 million share (27% of total shares outstanding) shrinkage to 8 million shares outstanding, with ?$57 million FCF, the per share FCF will be ~$7. Apply a 14 times multiple, we get $98 per share, or 15.5% compounded annually for 5 years.


Conclusion: At $48 per share, Strayer is a good combination of quality and value in the for-profit education industry.

Disclosure: Long STRA.

Source: http://jianing1112.blogspot.com/2013/04/strayer-education-quality-educator-for.html

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Russia contacted US twice about Boston bomber

WASHINGTON (AP) ? Two U.S. officials briefed on the Boston marathon investigation say the Russian government contacted the FBI and the CIA separately in 2011 with concerns about Tamerlan Tsarnaev (tsahr-NEYE'-ehv), one of the men authorities say was behind the attacks.

One of the officials says the CIA was contacted by Russia in the fall of 2011. Officials say Russia contacted the FBI in early 2011.

The officials spoke on condition of anonymity because they were not authorized to speak publicly about the ongoing investigation.

The FBI said its investigators found nothing to suggest Tsarnaev was part of an extremist group and shared that information back.

Tsarnaev died in a police shootout.

Source: http://news.yahoo.com/russia-contacted-us-twice-boston-bomber-180629848--politics.html

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Putin: Boston bombing shows West's mistake

MOSCOW (AP) ? The Boston bombings should spur stronger security cooperation between Moscow and Washington, Russian President Vladimir Putin said Thursday, adding that they also show that the West was wrong in supporting militants in Chechnya.

Putin said that "this tragedy should push us closer in fending off common threats, including terrorism, which is one of the biggest and most dangerous of them."

The two brothers accused of the Boston bombings are ethnic Chechens who had lived in the U.S. for more than a decade.

Putin warned against trying to find the roots for the Boston tragedy in the suffering endured by the Chechen people, particularly in mass deportations of Chechens to Siberia and Central Asia on Soviet dictator Josef Stalin's orders. "The cause isn't in their ethnicity or religion, it's in their extremist sentiments," he said.

Speaking in an annual call-in show on state television, Putin criticized the West for refusing to declare Chechen militants terrorists and for offering them political and financial assistance in the past.

"I always felt indignation when our Western partners and Western media were referring to terrorists who conducted brutal and bloody crimes on the territory of Russia as rebels," Putin said.

The U.S. has urged the Kremlin to seek a political settlement in Chechnya and criticized rights abuses by Russian troops during the two separatist wars since 1994, which spawned an Islamic insurgency that has engulfed the entire region.

It also provided humanitarian aid to the region during the high points of fighting there in the 1990s and the early 2000s.

Russian officials have repeatedly claimed that rebels in Chechnya have close links with al-Qaida. They say dozens of fighters from Arab countries trickled into the region during the fighting there, while some Chechen militants have gone to fight in Afghanistan.

Putin said the West should have cooperated more actively with Russia in combatting terror.

"We always have said that we shouldn't limit ourselves to declarations about terrorism being a common threat and engage in closer cooperation," he said. "Now these two criminals have proven the correctness of our thesis."

Source: http://news.yahoo.com/putin-boston-bombing-shows-wests-mistake-101701441.html

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Thursday, April 25, 2013

Earth's center is 1,000 degrees hotter than previously thought, synchrotron X-ray experiment shows

Apr. 25, 2013 ? Scientists have determined the temperature near the Earth's centre to be 6000 degrees Celsius, 1000 degrees hotter than in a previous experiment run 20 years ago. These measurements confirm geophysical models that the temperature difference between the solid core and the mantle above, must be at least 1500 degrees to explain why the Earth has a magnetic field. The scientists were even able to establish why the earlier experiment had produced a lower temperature figure.

The results are published on 26 April 2013 in Science.

The research team was led by Agn?s Dewaele from the French national technological research organization CEA, alongside members of the French National Center for Scientific Research CNRS and the European Synchrotron Radiation Facility ESRF in Grenoble (France).

The Earth's core consists mainly of a sphere of liquid iron at temperatures above 4000 degrees and pressures of more than 1.3 million atmospheres. Under these conditions, iron is as liquid as the water in the oceans. It is only at the very centre of the Earth, where pressure and temperature rise even higher, that the liquid iron solidifies. Analysis of earthquake-triggered seismic waves passing through the Earth, tells us the thickness of the solid and liquid cores, and even how the pressure in the Earth increases with depth. However these waves do not provide information on temperature, which has an important influence on the movement of material within the liquid core and the solid mantle above. Indeed the temperature difference between the mantle and the core is the main driver of large-scale thermal movements, which together with the Earth's rotation, act like a dynamo generating the Earth's magnetic field. The temperature profile through the Earth's interior also underpins geophysical models that explain the creation and intense activity of hot-spot volcanoes like the Hawaiian Islands or La R?union.

To generate an accurate picture of the temperature profile within the Earth's centre, scientists can look at the melting point of iron at different pressures in the laboratory, using a diamond anvil cell to compress speck-sized samples to pressures of several million atmospheres, and powerful laser beams to heat them to 4000 or even 5000 degrees Celsius."In practice, many experimental challenges have to be met," explains Agn?s Dewaele from CEA, "as the iron sample has to be insulated thermally and also must not be allowed to chemically react with its environment. Even if a sample reaches the extreme temperatures and pressures at the centre of the Earth, it will only do so for a matter of seconds. In this short timeframe it is extremely difficult to determine whether it has started to melt or is still solid."

This is where X-rays come into play. "We have developed a new technique where an intense beam of X-rays from the synchrotron can probe a sample and deduce whether it is solid, liquid or partially molten within as little as a second, using a process known diffraction," says Mohamed Mezouar from the ESRF, "and this is short enough to keep temperature and pressure constant, and at the same time avoid any chemical reactions."

The scientists determined experimentally the melting point of iron up to 4800 degrees Celsius and 2.2 million atmospheres pressure, and then used an extrapolation method to determine that at 3.3 million atmospheres, the pressure at the border between liquid and solid core, the temperature would be 6000 +/- 500 degrees. This extrapolated value could slightly change if iron undergoes an unknown phase transition between the measured and the extrapolated values.

When the scientists scanned across the area of pressures and temperatures, they observed why Reinhard Boehler, then at the MPI for Chemistry in Mainz (Germany), had in 1993 published values about 1000 degrees lower. Starting at 2400 degrees, recrystallization effects appear on the surface of the iron samples, leading to dynamic changes of the solid iron's crystalline structure. The experiment twenty years ago used an optical technique to determine whether the samples were solid or molten, and it is highly probable that the observation of recrystallization at the surface was interpreted as melting.

"We are of course very satisfied that our experiment validated today's best theories on heat transfer from the Earth's core and the generation of the Earth's magnetic field. I am hopeful that in the not-so-distant future, we can reproduce in our laboratories, and investigate with synchrotron X-rays, every state of matter inside the Earth," concludes Agn?s Dewaele.

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Story Source:

The above story is reprinted from materials provided by European Synchrotron Radiation Facility.

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


Journal References:

  1. S. Anzellini, A. Dewaele, M. Mezouar, P. Loubeyre, G. Morard. Melting of Iron at Earth's Inner Core Boundary Based on Fast X-ray Diffraction. Science, 2013; 340 (6131): 464 DOI: 10.1126/science.1233514
  2. R. Boehler. Temperatures in the Earth's core from melting-point measurements of iron at high static pressures. Nature, 1993; 363 (6429): 534 DOI: 10.1038/363534a0

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/most_popular/~3/IAZlNezwVJ4/130425142355.htm

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Wednesday, April 24, 2013

GOG adds 22 more Mac games

Twenty-two games added for Macs from GOG The folks at GOG.com have added 22 games to their roster of downloadable titles for the Mac, including vintage classics like Wing Commander 3: Heart of the Tiger and The 7th Guest, plus more recent fare like the 3D platformer Psychonauts, and Runic's hack-and-slash dungeon crawler Torchlight.

GOG.com - originally Good Old Games - specializes in resurrecting classic games to run on modern hardware. And in 2013 they've made a push onto the Mac, so if vintage games are your thing or you're a gamer of a certain age looking to revisit your salad days, now's your chance. Some of the games are on sale, too, so get while the getting's good. If you use a PC for gaming too and you've already bought the PC version, you're able to download the Mac version without repurchasing.

The games run the gamut from squad-based shooters to point-and-click adventure games, god games, 2D and 3D platformers, real-time strategy and hack-and-slash dungeon crawlers. Here's the list:

  • The 7th Guest
  • Cannon Fodder
  • Crusader No Regret
  • Duke Nukem Manhattan Project
  • Gemini Rue
  • Ground Control 2: Special Edition
  • Hocus Pocus
  • Lords of the Realm: Royal Edition 1+2
  • Pinball Gold Pack
  • Populous 2: Trials of the Olympian Gods
  • Primordial
  • Psychonauts
  • Resonance
  • Sniper Elite: Berlin 1945
  • Space Colony HD
  • Stronghold HD
  • Stronghold Crusader HD
  • Torchlight
  • Total Annihilation Commander Pack
  • Total Annihilation Kingdoms
  • Ultima 8: Gold Edition
  • Wing Commander 3: Heart of the Tiger
    


Source: http://feedproxy.google.com/~r/TheIphoneBlog/~3/lbbWyGOQQus/story01.htm

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25 accused of plot to smuggle contraband into jail (Providence Journal)

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Source: http://news.feedzilla.com/en_us/stories/politics/top-stories/301075233?client_source=feed&format=rss

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An Introduction To Complications: The Chronograph

Editor's note: This is part two of a series of introductory pieces on watches from our friends at Hodinkee. You can read part one here. More »
    


Source: http://feeds.gawker.com/~r/gizmodo/full/~3/6NZPeWZJA4Y/an-introduction-to-complications-the-chronograph

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