Math Matters
Saturday 26th of May 2012 01:25:41 AM
Posted by admin / Under Mathematics And Fiber Arts
| If one manages to graduate from high school without the rudiments of algebra, geometry and trigonometry, there are certain relatively high-paying careers probably off-limits for life -- such as careers in architecture, chemistry, computer programming, engineering, medicine and certain technical fields. For example, one might meet all of the physical requirements to be a fighter pilot, but he's grounded if he doesn't have enough math to understand physics, aerodynamics and navigation. Mathematical ability helps provide the disciplined structure that helps people to think, speak and write more clearly. In general, mathematics is an excellent foundation and prerequisite for study in... |
Hot Idea for a Faster Hard Drive
Saturday 26th of May 2012 01:25:41 AM
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| Enlarge Image Laser-induced switching. Experimental images showing two small domains with magnetic orientation up (white) and down (black). Each laser pulse reverses the direction repeatedly. Credit: Johan Mentink; Richard Evans (inset) An ultrashort heat pulse can predictably flip a bit in a magnetic memory like the one in your hard drive. The surprising effect could ultimately lead to magnetic memories hundreds of times faster and more energy efficient than today's hard drives. It also provides a way to control the direction in which a bit is magnetized without applying something else that has a direction, such as a magnetic... |
Why Science Majors Change Their Minds (It’s Just So Darn Hard)
Saturday 26th of May 2012 01:25:41 AM
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| LAST FALL, President Obama threw what was billed as the first White House Science Fair, a photo op in the gilt-mirrored State Dining Room. He tested a steering wheel designed by middle schoolers to detect distracted driving and peeked inside a robot that plays soccer. It was meant as an inspirational moment: children, science is fun; work harder. Politicians and educators have been wringing their hands for years over test scores showing American students falling behind their counterparts in Slovenia and Singapore. How will the United States stack up against global rivals in innovation? The president and industry groups have... |
Turning the Classroom Upside Down (article about Khan Academy)
Saturday 26th of May 2012 01:25:41 AM
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| We all know the standard drill for a math class. The teacher delivers lectures on a new concept, students do some homework problems, and after a few weeks they take an exam. Some do well, some do poorly, and then it's on to the next topic. |
New math theories reveal the nature of numbers
Saturday 26th of May 2012 01:25:41 AM
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| Finite formula found for partition numbersFor centuries, some of the greatest names in math have tried to make sense of partition numbers, the basis for adding and counting. Many mathematicians added major pieces to the puzzle, but all of them fell short of a full theory to explain partitions. Instead, their work raised more questions about this fundamental area of math. On Friday, Emory mathematician Ken Ono will unveil new theories that answer these famous old questions. Ono and his research team have discovered that partition numbers behave like fractals. They have unlocked the divisibility properties of partitions, and developed... |
Benoît Mandelbrot, Novel Mathematician, Dies at 85
Saturday 26th of May 2012 01:25:41 AM
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| Benoît B. Mandelbrot, a maverick mathematician who developed an innovative theory of roughness and applied it to physics, biology, finance and many other fields, died Thursday in Cambridge, Mass. He was 85...Dr. Mandelbrot coined the term “fractal” to refer to a new class of mathematical shapes whose uneven contours could mimic the irregularities found in nature...In a seminal 1982 book, “The Fractal Geometry of Nature,” Dr. Mandelbrot defended mathematical objects that he said others had dismissed as “monstrous” and “pathological.” Using fractal geometry, he argued, the complex outlines of clouds and coastlines, once considered unmeasurable, could now “be approached in... |
Benoit Mandelbrot, Mathematician, Dies at 85 (Fractal geometry)
Saturday 26th of May 2012 01:25:41 AM
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| Benoit B. Mandelbrot, a maverick mathematician who developed an innovative theory of roughness and applied it to physics, biology, finance and many other fields, died on Thursday in Cambridge, Mass. He was 85. His death, at a hospice, was caused by pancreatic cancer, his wife, Aliette, said. He had lived in Cambridge. Dr. Mandelbrot coined the term “fractal” to refer to a new class of mathematical shapes whose uneven contours could mimic the irregularities found in nature. “Applied mathematics had been concentrating for a century on phenomena which were smooth, but many things were not like that: the more you... |
5th Grade Math Help
Saturday 26th of May 2012 01:25:41 AM
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STEM Support Doesn’t Compute
Saturday 26th of May 2012 01:25:41 AM
Posted by admin / Under Mathematics And Fiber Arts
| Those who most loudly proclaim the need for qualified math and science teachers are literally being challenged on how much they value science, technology, engineering, and mathematics. “Despite the fact that Washington’s Legislature and Governor last session passed a law (House Bill 2621) intending to accelerate the teaching and learning of math and science, the system is hardwired to do the opposite,” the Center for Reinventing Public Education found. “In a new analysis from the University of Washington’s Center on Reinventing Public Education (CRPE), researchers demonstrate that the average pay for math and science teachers in Washington state lags behind... |
Noted UW-Madison mathematician Rudin dies at 89
Saturday 26th of May 2012 01:25:41 AM
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| Walter Rudin, a preeminent mathematician who taught at UW-Madison for 32 years, died Thursday at the age of 89 after suffering from Parkinson’s disease. Rudin’s advanced work on mathematical analysis may have been of interest to only a small worldwide audience, but his three textbooks were translated into multiple languages and used by generations of college students. “Especially because of his textbooks, he was known universally among undergraduates and graduates studying mathematics,” said Alexander Nagel, a colleague in the UW-Madison math department. Rudin was born in Vienna, Austria, on May 2, 1921, to a prosperous Jewish family. His family fled... |
Deadly explosions on Moscow Metro system [UPDATE: 41 Dead; 2 Female Suicide Bombers]
Saturday 26th of May 2012 01:25:41 AM
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| At least 25 people are reported to have been killed in an explosion on the Metro system in central Moscow, with a second blast coming shortly afterwards. The first blast happened at the city's central Lubyanka station, reports quoting security sources said. A second explosion happened at the Park Kultury station, Russian news agency Tass reported. Ten people were injured in the first blast, Tass said, quoting the emergencies ministry. The number of casualties at the second blast is not yet clear. |
The Mathematics of Global Warming
Saturday 26th of May 2012 01:25:41 AM
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| The forecasts of global warming are based on the mathematical solutions of equations in models of the weather. But all of these solutions are inaccurate. Therefore no valid scientific conclusions can be made concerning global warming. The false claim for the effectiveness of mathematics is an unreported scandal at least as important as the recent climate data fraud. Why is the math important? And why don't the climatologists use it correctly? Mathematics has a fundamental role in the development of all physical sciences. First the researchers strive to understand the laws of nature determining the behavior of what they are... |
Made in His Image: The Connecting Power of Hands
Saturday 26th of May 2012 01:25:41 AM
Posted by admin / Under Mathematics And Fiber Arts
| boom in affordable housing in the 1950s was helped by the invention of a distinctive multifunctional piece of equipment: the backhoe. Its strong yet relatively slender articulated arm allowed precise yet rapid placement for digging or lifting. The manipulative device is trim and fast, since hoses transfer power to it from a powerful hydraulic pump within the main chassis. The "arm" of the backhoe makes many people think the equipment design is similar to a human arm, but what makes it so versatile is that it is actually more like a giant human finger. If a valuable piece of equipment... |
Taking the Tally of Curious Triangles
Saturday 26th of May 2012 01:25:41 AM
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| Enlarge ImageObviously. The area of this triangle is 13, a congruent number. Credit: L. Blizard/Science Quick! What do the numbers 5, 6, 7, 13, 14, 15, 20, 21, 22, and 23 have in common? If you said they're all "congruent" numbers--numbers related to the areas of certain triangles--then you may be one of those folks who scored an 800 on your math SAT. Even if that answer didn't leap to mind, you may be intrigued to know that mathematicians have now cataloged the congruent numbers--which are easy to define but not so easy to spot--up to a trillion. A... |
Fads and Fallacies in the Social Sciences by Steven Goldberg: Part II
Saturday 26th of May 2012 01:25:41 AM
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| Environmentalism cannot explain all behavior It is obvious and true that one’s environment influences one’s behavior. A Chinese will tend to act differently than a Russian; for example, they will tend to celebrate different holidays and show variation in respect to their elders, purely because of socialization. No one disputes this. It is also true and obvious that one’s physiology and biology, one’s neurochemical makeup, influences one’s behavior. A 250-pound, muscle-bound man is more likely to play for the NFL than is a short, 150-pound, desk-bound man. Goldberg is fond of repeating, “an adult male’s ability to grow a moustache... |
Obama vs. Mathematics (health care + entitlements + higher taxes on the rich = national disaster)
Saturday 26th of May 2012 01:25:41 AM
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| Even a popular president like Barack Obama cannot win arguments against two forces: God and mathematics. While the president has openly shared his reverence for the former, he has decided to take on the latter. It’s a fight that he will lose. Upon taking office, President Obama decided to postpone his campaign promise to implement a true cost-saving reform of Social Security and Medicare. Instead, he’s trying to expand the nation’s entitlement offerings with massive new government spending on health care. The Congressional Budget Office’s mid-July “score” of the main House health-care bill puts the price tag at about $1... |
Israelis Fighting Swine Flu With NUMB3RS !?!?
Saturday 26th of May 2012 01:25:41 AM
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| In the TV Show NUMB3RS Charlie Eppes, a world-class mathematician, helps his FBI Agent brother solve many of his perplexing FBI cases through different mathematical formulas. NUMB3RS is coming to life, but in this case its not Crimes the world class mathematician is solving, but pandemics. The math whiz's at Tel Aviv University have developed a formula to predict that path of pandemics like the swine flu. This is important because it will direct authorities when to close mass transit, shut down and even how to distribute doctors and medicines. It wont prevent swine flu but it will predict the... |
Hitler’s Calculation and the Sorry State of American Politics
Saturday 26th of May 2012 01:25:41 AM
Posted by admin / Under Mathematics And Fiber Arts
| Caution: political-party purists may be miffed by this article; but I call ‘em like I see ‘em. Adolf Hitler was a poor student of mathematics, but he got the hang of it sufficiently to figure how to take over the German government. A “majority,” Hitler reasoned, consisted of 51 per cent of the votes necessary to control 51 per cent of the seats in the legislature – - 26 per cent of those voting, in other words. Unfortunately, the majority of Americans now find themselves victims of the same political calculation. Polls indicate that the liberal Democrats now in charge... |
Baseless Bias and the New Second Sex
Saturday 26th of May 2012 01:25:41 AM
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| Claims of bias against women in academic science have been greatly exaggerated. Meanwhile, men are becoming the second sex in American higher education.In 2006 the National Academy of Sciences released Beyond Bias And Barriers: Fulfilling the Potential of Women in Academic Science and Engineering, which found “pervasive unexamined gender bias†against women in academic science. Donna Shalala, a former Clinton administration cabinet secretary, chaired the committee that wrote the report. When she spoke at a congressional hearing in October 2007, she warned that strong measures would be needed to improve the “hostile climate†women face in university science. This “crisis,â€... |
New Pattern Found in Prime Numbers
Saturday 26th of May 2012 01:25:41 AM
Posted by admin / Under Mathematics And Fiber Arts
| In a recent study, Bartolo Luque and Lucas Lacasa of the Universidad Politécnica de Madrid in Spain have discovered a new pattern in primes that has surprisingly gone unnoticed until now. They found that the distribution of the leading digit in the prime number sequence can be described by a generalization of Benford’s law. In addition, this same pattern also appears in another number sequence, that of the leading digits of nontrivial Riemann zeta zeros, which is known to be related to the distribution of primes. Besides providing insight into the nature of primes, the finding could also have applications... |
Geometer wins maths 'Nobel' - Abel prize awarded to Mikhail Leonidovich Gromov.
Saturday 26th of May 2012 01:25:41 AM
Posted by admin / Under Mathematics And Fiber Arts
| A French-Russian mathematician has won the Abel Prize today for his work on advanced forms of geometry. The winner of the 6 million Norwegian kroner (US$920,000) prize, Mikhail Leonidovich Gromov, has held a permanent appointment at the Institute of Advanced Scientific Studies (IHES) outside Paris since 1982. The Abel committee cited Gromov specifically for his contributions to three sub-disciplines of modern geometry: the study of Riemannian space, symplectic geometry, and groups of polynomial growth. Gromov is "renowned among mathematicians for his original approach", says Ian Stewart, a mathematician at the University of Warwick in Coventry. Among other things, modern geometers... |
The Beal Conjecture
Saturday 26th of May 2012 01:25:41 AM
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| No one suspected that Ax + By = Cz (note unique exponents) might also be impossible with co-prime bases until a remarkable discovery in 1993 by a Dallas, Texas number theory enthusiast by the name of Andrew Beal. Beal was working on FLT when he began to look at similar equations with independent exponents. He constructed several algorithms to generate solution sets but the very nature of the algorithms he was able to construct required a common factor in the bases. He began to suspect that co-prime bases might be impossible and set out to test his hypothesis by computer.... |
A talk with Mario Livio ("Is reality, in some fundamental way, mathematics?")
Saturday 26th of May 2012 01:25:41 AM
Posted by admin / Under Mathematics And Fiber Arts
| Is mathematics the language of the universe?MARIO LIVIO IS an astrophysicist, a man whose work and worldview are inextricably intertwined with mathematics. Like most scientists, he depends on math and an underlying faith in its incredible power to explain the universe. But over the years, he has been nagged by a bewildering thought. Scientific progress, in everything from economics to neurobiology to physics, depends on math's ability. But what is math? Why should its abstract concepts be so uncannily good at explaining reality? The question may seem irrelevant. As long as math works, why not just go with it? But... |
Crunching numbers and seeking God
Saturday 26th of May 2012 01:25:41 AM
Posted by admin / Under Mathematics And Fiber Arts
| From Sandro Magister of Chiesa, a piece about Pope Benedict XVI's interest in the nature of mathematics within the relationship of faith and science: Scientists of worldwide fame, like Richard Dawkins of England and Piergiorgio Odifreddi of Italy, insistently link mathematics with the profession of atheism. Spread through conferences, articles, and best-selling books, their theories aspire to become a common language and philosophy. In simple terms, the objections to these atheist mathematicians are the ones expressed by a 17-year-old Roman high school student, Giovanni, during a question-and-answer session with the pope in St. Peter's Square, crowded with young people on... |
Doing the Math to Find the Good Jobs
Saturday 26th of May 2012 01:25:41 AM
Posted by admin / Under Mathematics And Fiber Arts
| Mathematicians Land Top Spot in New Ranking of Best and Worst Occupations in the U.S. BY SARAH E. NEEDLEMANThe Wall Street Journal Nineteen years ago, Jennifer Courter set out on a career path that has since provided her with a steady stream of lucrative, low-stress jobs. Now, her occupation — mathematician — has landed at the top spot on a new study ranking the best and worst jobs in the U.S. "It's a lot more than just some boring subject that everybody has to take in school," says Ms. Courter, a research mathematician at mental images Inc., a maker of... |
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