Sunday, 8 March 2009

The most beautiful song describing women..A tribute to us all!

SHE

She May be the face I can't forget

The trace of pleasure or regret

May be my treasure or the price I have to pay

She May be the song that summer sings

May be the chill that autumn brings

May be a hundred different things Within the measure of a day

She May be the beauty or the beast

May be the famine or the feast

May turn each day into a heaven or a hell

She may be the mirror of my dreams The smile reflected in a stream

She may not be what she may seem Inside her shell

She Who always seems so happy in a crowd Whose eyes can be so private and so proud

No one's allowed to see them when they cry

She May be the love that cannot hope to last

May come to me from shadows of the past

That I'll remember till the day I die

She May be the reason I survive

The why and wherefore I'm alive

The one I'll care for through the rough in ready years

Me I'll take her laughter and her tears And make them all my souvenirs

For where she goes I've got to be

The meaning of my life is She She, oh she

We are beautiful!!!!! Happy Women´s day to everyone!

Saturday, 7 March 2009

Multitasking drains the brain



Mind is designed to handle one complex activity at a time.

Scientists have bad news for people who think they can deftly drive a car while gabbing on a cell phone.
The first study using magnetic resonance images of brain activity to compare what happens in people's heads when they do one complex task, as opposed to two tasks at a time, reveals a disquieting fact: The brain appears to have a finite amount of space for tasks requiring attention.
When people try to drive in heavy traffic and talk, researchers say, brain activity does not double. It decreases. People performing two demanding tasks simultaneously do neither one as well as they do each one alone.
The study, published in tomorrow's issue of the journal NeuroImage, was led by Marcel Just, a psychology professor and co-director of the Center for Cognitive Brain Imaging at Carnegie Mellon University in Pittsburgh. While this study did not examine the brain activity of people who were driving cars and conversing, it used tasks that engage similar brain regions, Just said. Moreover, he said, plans are under way to study the brains of people who are using driving simulators while someone is talking to them.
Jordan Grafman, a neuroscientist at the National Institute of Neurological Diseases and Stroke in Bethesda, Md., said that while the study did not involve cell phones, it was relevant to public policy. "Lawmakers need to know there is a cost whenever people try to do multiple tasks," he said.
Christof Koch, a professor of cognitive and behavioral biology at the California Institute of Technology, said: "No question this study was very nicely executed. After all, if you really want to listen to something, you close your eyes, right?"
In recent years, it has become possible to map brain areas involved in high-level cognitive tasks -- processing sentences, comprehending paragraphs, formulating strategies, planning many moves ahead and evaluating uncertainty.
When people do these mental tasks, functional brain imaging machines can detect which areas of their brains become most active. Because active brain cells use more oxygen, they can be seen as hot spots against a background of less-active cells.
The active regions are measured in voxels, volumes of brain tissue about the size of a grain of rice. When a particular part of the brain is working hard, more voxels light up with greater intensity.
Previous research showed that when a single area of the brain, like the visual cortex, has to do two things at once, like tracking two objects, there is less brain activation than occurs when it watches one thing at a time, Just said.
The new study sought to find out whether something similar happened when two highly independent tasks, carried out in very different parts of the brain, were done concurrently. The answer was not obvious, Just said. Maybe the tasks would work independently and activate twice as much space in the brain. Or they could compete for space and activate a different, and unpredictable, set of brain cells, he said.
Just and his colleagues chose two tasks for the study. One was language comprehension, which is carried out in the brain's temporal lobe. The other task required mentally rotating objects in space, a process that is done in the parietal lobe.
Eighteen volunteers had their brains scanned while doing one or both tasks. For one scan, they listened to complex sentences like "the pyramids were burial places and they are one of the seven wonders of the ancient world," and had to indicate whether the statements were true or false. For another, they were shown pairs of three-dimensional figures and asked to rotate them mentally to judge whether they were the same.
Then they tried to do both tasks simultaneously and equally conscientiously. Researchers confirmed that the two tasks relied on different parts of the brain. The language task alone activated 37 voxels of brain tissue, mostly in temporal regions, Just said. The mental rotation task alone also activated 37 voxels, mostly in parietal regions.
But when both tasks were done at the same time, the volunteers' brains did not engage the sum of the two, or 74 voxels. Instead, their brains displayed only 42 voxels of activity.
On closer inspection, the researchers found that the number of activated voxels was smaller and less intense in each of the two brain regions. The amount of brain activation generated by mental rotation decreased 29 percent if the person also was listening to a sentence. The amount of activation generated by listening to sentences decreased 53 percent if the person was also trying to rotate objects.
While the volunteers' overall accuracy did not suffer, Just said, it took them a bit longer to do each task. If the tasks had been more difficult, their performance would have suffered even more.
It appears that the brain has limits and can only do so much at one time, Just said. "You can't just keep piping new things through," he said, and expect the brain to keep up. With practice, the brain can become more efficient at carrying out multiple tasks, he added, but performance is never as good as when the tasks are carried out independently.
Everyone has had the experience of trying to do two things at once, like driving a car and talking to a passenger, Just said. Both speech and driving can become automatic and not very demanding of brain power. But when an experienced driver encounters a sudden increase in complexity -- an argument erupts and it also starts to sleet -- that driver probably will stop the conversation and pay attention to the road.
The difference between in-person and cell phone conversations is that a passenger can see changing road conditions and will likely shut up when needed, Just said. The person on the other end of a cell phone does not see these changes and may keep on blathering.
Making cell phones hands-free will not solve the problem of the brain's inability to carry out complex tasks in tandem. And since it is not possible to ban other human conversation in cars, the next best thing is education, Just said. People need to know that their brains have limits, even if they are under the illusion that multitasking is the wave of the future.

Monday, 2 March 2009

I am a teacher



I am a Teacher.I was born the first moment that a question leaped from the mouth of a child.I have been many people in many places.I am Socrates exciting the youth of Athens to discover new ideas through the use of questions.I am Anne Sullivan tapping out the secrets of the universe into the outstretched hand of Helen Keller.I am Aesop and Hans Christian Andersen revealing truth through countless stories.I am Marva Collins fighting fir every child's right to an education.I am Mary McLeod Bethune building a great college for my people, using orange crates for desks.And I am Bel Kaufman struggling to go Up The Down Staircase.The names of those who have practiced my profession ring like a hall of fame for humanity ... Booker T. Washington, Buddha, Confucius, Ralp Waldo Emerson, Leo Buscaglia, Moses and Jesus.I am also those whose names and faces have long been forgotten but whose lessons and character will always be remembered in the accomplishment of their students.I have wept for joy at their weddings of former students, laughed with glee at the birth of their children and stood with bowed in grief and confusion by graves dug too soon far too young.Throughout the course of a day I have been called upon to be an actor, friend, nurse and doctor, coach, finder of lost articles, money lender, taxi driver, psychologist, substitute parent, salesman, politician and keeper of the faith.Despite the maps, charts, formulas, verbs, stories and books, I have really had nothing to teach, for my students really have only themselves to learn, and I know it takes the whole world to tell you who you are.I am a paradox. I speak loudest when I listen the most. My greatest gifts are in what I am willing to appreciatively receive from my students.Material wealth is not one of my goals, but I am a full-time treasure seeker in my quest for new opportunities for my students to use their talents and in my constant search for those talents that sometimes lie buried in self-defeat.I am the most fortunate of all who labor.A doctor is allowed to usher life into the world in one magic moment. I am allowed to see that life is reborn each day with new questions, ideas and friendships.An architect knows if he builds with care, his structure may stand for centuries. A teacher knows that if he builds with love and truth, what he builds will last forever.I am a warrior, daily doing battle against peer pressure, negativity, fear, conformity, prejudice, ignorance and apathy. But I have great allies: Intelligence, Curiosity, Parental Support, Individuality, Creativity, Faith, Love and Laughter all rush to my banner with indomitable support.And who do I have to thank for this wonderful life I am so fortunate to experience, but you the public, the parents. For you have done me the great honor to entrust to me your greatest contribution to eternity, your children.And so I have a past that is rich in memories. I have a present that is challenging, adventurous and fun because I am allowed to spend my days with the future.I am a teacher ... and I thank God for it every day.