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 Science and Turning Point
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Posted on 09-28-05 8:52 AM     Reply [Subscribe]
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20th Century was the century of Physics. The century was bigun with Plank's theory of "Quanta" in 1900, and ended with elegant theory of strings, which is considered to be an answer of all the fundamental questions of the universe and giving birth to new wonders like parallel universe (at least theoritically :)). This is the reason why the String theory is also called " The Thoery of Everything".

Things are changing in 21st Century. Scientists sound more interested in biology than physics. They want to study more about living cells and its components with their different mechanisms and transports. It seems to me that Biology and Physics are merging together as Chemistry and Physics had merged in 20th Century. The combined name is already in air, "Bio-Physics". Thanks to the information technology, even developing country like ours have already sensed this fact. Few weeks ago I read that the Kathmandu University has started to offer courses on Bio-Physics.

Technological development of last century (Physics) will be the best probe to study biological systems. The advance form of this will be study of mind.

Here is beginning ..........

http://www.nature.com/news/2005/050926/full/050926-5.html

 
Posted on 09-28-05 9:05 AM     Reply [Subscribe]
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Science has never been my cup of tea! I look at the "Quanta" and my heart feels the same dread I use to feel when I was in my +2. I use to bunk all my physics classes. LOL... I look at physics and science people and think "What Lunatics!!" Why dont they leave things as they are rather than discover new things and make life difficult for the poor students who have to learn not only their theory but all the theories of their co-workers too! ughh!

Not meant to dishearten you though Dhamma... if it hadnt been people like you who were interested in it... then poor people like me with no interest would be dragged into the mean field too..!! :s..:D
 
Posted on 09-28-05 10:18 AM     Reply [Subscribe]
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(::::Just dropped in to say Hello to Rhythm after ages:::;)
Nirman~*
 
Posted on 09-28-05 11:20 AM     Reply [Subscribe]
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Hey Nirman jyu.. long time..:D I am so glad to see you remember me... i was womdering if everyone had forgotten me re k.. ehehe.. so how are you and what are you doing.. new thau ma.?? TTYL... do drop in more to say hi.. hehe
 
Posted on 09-28-05 7:51 PM     Reply [Subscribe]
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Preety good topic......even nicer to hear that KU has opted to indroduce bio-phy. Yes indeed people have been leaning towards biology more than any other field. In present days, we see more students are wanting carrer in the biomedical engineering. Biomed provides new topics to think about and hence it has enticed a preety large number of people. Just yesterday we were asked to attend a presentation given by a biomed engineer. And wow ....I was facinated to be acquainted with how biomed could make a difference in our daily life.....Indeed it was influential......
Ani Rythm....if lunatics weren't there we would have not been here....:d.....ani haven't seen much of you around lately.....what u been upto...???????:d


 
Posted on 09-28-05 9:16 PM     Reply [Subscribe]
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Yes, pretty good topic. And very nice article. Thank you very much for pointing this out.
I agree that the integration of different scientific fields (.. and devices like this - brain-computer interface described in the article) should advance our understanding about several interesting aspects of Biology including what Crick called science's last frontier - brain and consciousness.
It is very good news that KU took this initiative. The TU should also start master's degree in Biomedical Sciences.
Hope to see more topics like this in future.

 
Posted on 09-28-05 11:18 PM     Reply [Subscribe]
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Good to know that KU has opted this topic. But, I am not sure if KU has enough experts to teach the subject. Most of the institutes even in west glamorize the subject and of course do businesses rather disseminating the knowledeg. If KU (Suresh Raj Sharma) is also trying to make a business out of this glamorous name, it is sad. I know, "computer education" was a big name in late 90s. So, there are lots of COMPUTER ENGINEERs in nepal now. Frankly speaking, some of them do not know even a simple binary mathematics. But, so what.. many institutes pocketed lots of money. Who cares if a bigger mass is in academic quandary!!!

Let us see this time?

 
Posted on 02-28-06 8:12 PM     Reply [Subscribe]
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Sorry all for belated response, thanks for sharing your knowledge, its helpful.

Rythm, I am not dishearten, rather honored :D. Thanks!

Flip Flop, Himal NY, sd-man, thanks for the appreciation.

Bio-technology is the forthcoming technology. Our neighbor India is advancing rapidly in this field. As we all know the deveolpment of a country indirectly means the technological advancemnet. India and China have proved that you don't have to start from basic science (Newtonian Era) to get technological advancement. A developing country like India is leading in the most advance modern day technology, computer software, where as china is leading in hardware. They are now fastest growing economies of the world because of the modern technology.

Were we had political stablitiy, we would have gained a lot form computer technology as China and India did. It was our unfortune that came to play....... and we are heading towards the uncertain future .....

Now India is advancing in Bio-tech, and we are fighting with each other. Tomorrow India will lead in Bio technology as it is leading in computer software today. We are laging behind and will never be able to catch our neighbors..... Perhaps we don't know what we are missing.....I am sorry worried, how many times will will be missing the chance....

Anyways, my worry will take us nowhere. I have posted the article just because that was a breakthrough. Material science is merging with life science and scientists are tilting towards the study of "mind" which is the most sophesticated thing in universe.

I have heard that nature/science areticles are not accessible to everyone so I will be posting that article for all.

Thanks
 
Posted on 02-28-06 8:15 PM     Reply [Subscribe]
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News
Published online: 27 September 2005; | doi:10.1038/news050926-5
Computer users move themselves with the mind
Electrode cap allows users to think themselves along a virtual street.

Michael Hopkin

Computer scientists have created a hat that can read your thoughts. It allows you to stroll down a virtual street. All you have to do is think about walking.

Called a brain-computer interface, the device detects activity in certain brain areas linked to movement, and uses the signals to mimic that movement in a virtual world. The technology could one day help paralysed patients to move robotic arms, or help sufferers of motor neuron disease to type out words on a virtual keyboard.

"Just thinking about movement activates the same neurons as actually moving," explains Gert Pfurtscheller of Graz University of Technology in Austria, who has been working on the device for around four years. By picking up on these bursts of nerve activity, the computer can decide whether you are thinking about moving your hands or feet, and react accordingly.

The technology detects brain waves by using electrodes placed at strategic points on the scalp; they are positioned over brain areas known to be involved in moving specific body parts. The computer can then distinguish between signals corresponding to different types of movement.

Previously, accurate detection of local brain activity has required electrodes to be implanted in the brain. This technique has allowed recipients to control robots and even send e-mails (see "Paralysed man sends e-mail by thought ") . The new device, presented at the Presence 2005 technology meeting in London last week1, achieves a similar feat using non-invasive methods.

Thinking cap



Doris Zimmerman is so good with her thoughts that she was flown in from Austria for the demonstrations
© Michael Hopkin/Nature
The team tested their creation by asking participants to navigate a virtual-reality studio called the Virtual Cave. Test subjects sit in a square studio wearing three-dimensional goggles, which project a scene such as a street, complete with pedestrians and buildings.

The computer then chooses a task for the participant: either walking forwards or moving their hands. It tells the user what to do through sound cues.

If the person is asked to think about walking, and they do so in a way that can be picked up by the cap, the virtual character steps forwards. If they fail, the character stays still. When asked to think about moving their hands, successful volunteers are rewarded by staying still. Failure leads to punishment: their character takes a step backwards.

One of the world's best-trained users is Doris Zimmerman, a student who has worked extensively with the team in Austria. She was flown in to help with demonstrations at the conference. As she sits in front of the Virtual Cave's three-dimensional screen, we watch her effortlessly glide down a high street.

However, it's not as easy as it looks, as I discover when I try a simplified version of the test (see 'Piano player gets poor score on brain test'). And I'm not the only one that struggled: "I took about five hours to learn it," confides Christoph Guger, who has set up a Graz-based company to develop the technology.


But after enough training, the team hopes that the virtual device could help those who are unable to move to interact more easily with others. It could even enable stroke patients to regain movement, Pfurtscheller hopes, by allowing them to 'exercise' their brain's motor centres.

"If they think of moving their hand and they see a hand move, it reinforces the thought," he says. And strengthening the mind, he adds, might lead to better motor control.
 
Posted on 02-28-06 8:20 PM     Reply [Subscribe]
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Field of mind has always been exciting to me. Here is something new to share with you.
 
Posted on 02-28-06 8:22 PM     Reply [Subscribe]
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News
Published online: 26 February 2006; | doi:10.1038/news060220-19
Memory aided by meaning
How to get your brain geared up to remember.

Michael Hopkin


The brain can be primed to remember words more effectively
© Alamy
Ever struggled to recall something you knew you ought to remember? Part of the problem might be that your brain just wasn't ready to store the memory in the first place.

Neuroscientists have discovered that how successfully you form memories depends on your frame of mind not just during and after the event in question, but also before it.

"People didn't realize that what the brain does before something happens influences the memory of that event," says Leun Otten of University College London, UK, who led the research. "They looked just at the response."

But it turns out that if your brain is 'primed' to receive information, you will have less trouble recalling it later.

By scanning the brain during these memory tests, the researchers found they could see this priming in action. By watching brain activity they could predict whether the participant would remember a subsequent event, before the event itself had happened.

Surprise test

The participants did not know that their memories were being tested. Instead, they were simply asked to concentrate on a series of single words flashing up on a computer screen. Before each word, a symbol appeared telling the volunteers to decide whether the word represented a living or non-living object, or alternatively whether the first and last letters of the word were in alphabetical order or not.

People didn't realize that what the brain does before something happens influences the memory of that event, they always looked just at the response.

Leun Otten
University College London, UK


A few minutes later, Otten's team sprung the surprise memory test on the volunteers, showing them another series of words and asking them to say whether or not they had seen each word before. Throughout it all the volunteers' brain activity was scanned using an EEG (electroencephalogram).

As might be expected, participants were better at remembering words following the living/non-living symbol, rather than the one for alphabetical order. This shows that thinking about the meaning of the words, as opposed to simply looking at the letters, better primes the memory.

Interestingly, the researchers could see this priming activity in the brain's frontal region (where conscious 'thinking' is generally carried out) between the presentation of the symbol and the viewing of the ensuing word. Stronger activity here was followed by more accurate recall. The researchers report their discoveries in Nature Neuroscience1.

In another similar test, volunteers were shown symbols telling them whether to expect the next word to be presented to them aurally or on a screen. This time, the memory priming was only evident for on-screen words. "It takes effort and time to redirect the brain from looking at something to listening for something, so it doesn't allow you to get in the right frame of mind," Otten suggests.

Think about it

The discovery hammers home some old advice for students: that they should really think about things rather than trying to learn by rote. "Always try to focus on understanding what is written; don't just regurgitate," says Otten, because concentrating on meaning is a far better primer for memory.

But setting up your mind for better memory will inevitably be a subtle process, Otten admits, and it's not clear how best to prepare the brain for improved recall. Simple advice might be most effective, however: when reading, try to concentrate rather than letting your mind wander.
 
Posted on 02-28-06 8:24 PM     Reply [Subscribe]
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~
Hello Damma,
I like your topic and keep continue.........
By the way you are from Bostan,just guess.....

Cheers,
 
Posted on 02-28-06 10:31 PM     Reply [Subscribe]
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Dhamma
May I know you? You go to the grad school in Boston and majoring in Physics?

If i Am right
 
Posted on 03-01-06 10:30 AM     Reply [Subscribe]
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~
Street boy,
"May I know you? You go to the grad school in Boston and majoring in Physics? "
You are right about Damma as far as I know (though it is my guess),

by the way, Street boy chahi ko ho...............................!!!!

Cheers,
 
Posted on 03-01-06 7:49 PM     Reply [Subscribe]
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Didn't you remember me?

Ok you can figure out from the Name . Street Boy
 
Posted on 03-01-06 9:20 PM     Reply [Subscribe]
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Flip-flop, it is interesting to understand how Biomedical engineering is evolving around in lets say another decade. Though it looks promising but I also urge to look at this article that was published in Science couple of weeks ago and decide before pursing career…..(don’t consider it as my pessimism, but something as an insinuation to make better decision)



News Focus
BIOMEDICAL ENGINEERING:
Spending Itself Out of Existence, Whitaker Brings a Field to Life
David Grimm

The Whitaker Foundation took on the job of turning a fledgling field into a scientific heavyweight--and succeeded. But what happens to biomedical engineering now?
Bioengineer Sangeeta Bhatia and the Whitaker Foundation are scientific soul mates. As a graduate student in a joint M.D.-Ph.D. program at the Massachusetts Institute of Technology (MIT) and Harvard University in the 1990s, Bhatia attended the Whitaker College of Health Sciences and Technology, an interdisciplinary program for scientists and engineers in the Boston area that the foundation began funding in 1979. After graduation, Bhatia received a Whitaker young investigator's grant to set up her lab at the University of California, San Diego (UCSD), a school that has received $23 million from the foundation to build up its biomedical engineering department.
"The Whitaker award allowed me to get my very first piece of equipment and hire a graduate student," says Bhatia, now an associate professor at MIT. "It helped me launch my entire research program."


There and back again. Thanks to Whitaker funding, Sangeeta Bhatia has returned to MIT as an associate professor.
CREDIT: MARIO CASAL/HST


With grants from the National Institutes of Health (NIH) and the National Science Foundation (NSF), Bhatia appears well along the road to a successful academic career. And that's fortunate, as Whitaker is on the road to oblivion. In June, the foundation will shut its doors after 30 years and more than $800 million in scientific philanthropy. During its lifetime, the Arlington, Virginia-based foundation has invested in thousands of young faculty members and graduate students and built hundreds of laboratories. That investment has transformed biomedical engineering from a barely recognized discipline into one of the most popular science majors in the United States.
"Their impact is almost immeasurable," says Frank Yin, president of the Biomedical Engineering Society and chair of the biomedical engineering department at Washington University in St. Louis, Missouri. "Whitaker put biomedical engineering on the map."

As remarkable as its largess is the way Whitaker spent it. "Most foundations focus on a problem--such as world hunger--and anyone who has a tool to address this problem qualifies for funding," says Thomas Skalak, chair of the biomedical engineering department at the University of Virginia (UVA) in Charlottesville. "Whitaker was unique in that it tried to establish the permanence of a particular field. And it knew that to do this, it would need to build up the field's infrastructure." That thrust benefited young and promising scientists such as Bhatia, whom the foundation regarded as the future of the discipline.

But will biomedical engineering continue to thrive when Whitaker leaves the scene? Some fear programs that have just begun to blossom under Whitaker's care may wilt. Others are concerned that some young faculty members could be orphaned without Whitaker's support, stunting the entire field. And still others worry that the foundation may have overbuilt the field's academic structure, creating more departments than the discipline can maintain. "The changes over the next few years could be pretty dramatic," Yin predicts.

Going for broke
The Whitaker Foundation was never supposed to last forever. Its founder, U. A. Whitaker--an engineer and CEO of a company that manufactured electronic connectors--hoped the foundation would fold within 40 years of his death in 1975. "He hated bureaucracy," says Whitaker President Peter Katona. "He felt that a foundation wouldn't accomplish its mission if it went after that mission forever."

Despite those concerns, Whitaker operated much like any other charitable organization in its early years. It spent about 10% of its capital annually (about $14 million) fostering collaborations between biologists and engineers to develop medical devices. Most of the money was channeled into 3-to-4-year grants to new faculty members such as Bhatia.

Like most biomedical engineers, Bhatia avoided a lengthy postdoc and moved directly into an assistant professorship. But there was a tradeoff: The quick transition prevented her from gathering enough research data to feel comfortable submitting a grant proposal to NIH. Another handicap was the project itself: designing a cartridge filled with liver cells that would help filter blood in patients with kidney failure. Its large engineering component, she felt, meant it "would never fly at the NIH." But once Bhatia had received the Whitaker award, she had the wherewithal to pitch a successful application first to NIH and later to NSF.

Although Whitaker's board was happy with the return on modest investments such as this, in 1991 it decided to go for broke. "The governing board wanted to increase the impact of the foundation when the field was at the cusp of becoming mainstream," says Katona. "They knew the only way to do this was to spend big bucks."

Ironically, exhausting the $200 million endowment proved harder than expected. Over the next 4 years, the foundation's assets more than doubled, thanks to the stock market boom. By the end of the decade, its annual payout of more than $60 million matched that of charities with an endowment of $1.2 billion.

One goal was to create thriving bioengineering departments at top U.S. universities. That's what happened at UCSD, whose program in 1988 consisted of six faculty members on half a floor of a medical school building. In 1993, Whitaker awarded the university $5 million to hire more professors and develop core facilities. Four years later, the foundation gave UCSD $18 million for a bioengineering building.

"The building brought together faculty and staff for the first time and really transformed the university into a national powerhouse for bioengineering," says Bhatia, who was hired under the first award. Today, UCSD has an official bioengineering department with 18 faculty members, 150 graduate students, and 1000 undergraduate majors--triple the pre-Whitaker numbers. U.S. News & World Report ranks the department second in the nation; before Whitaker, it wasn't even on the radar.

Dozens of schools can tell similar stories. Since 1991, the number of biomedical engineering departments in the United States has soared from 27 to 74, with accompanying increases in the number of undergraduates and graduate students.

Whitaker's smaller awards have made a big difference as well, says Skalak. At UVA, two $1 million awards allowed his department to create new biomedical engineering courses and establish dedicated lecture halls. Bhatia used similar awards at UCSD to write the first undergraduate textbook on tissue engineering and to help develop a Web site that allows all UC students to take biomedical engineering classes online. "Whitaker realized that these tools would help grow biomedical engineering as a discipline and were vital to the field's future," she says.

Engineering change
With Whitaker folding its tent, biomedical engineers are wondering if the field can continue to thrive. "There's a lot of trepidation in the field about what will happen now," says Bhatia. Thanks to the foundation's emphasis on infrastructure, the number of biomedical engineers continues to increase, even as funding remains static. But the field will also need to cope with the decline in start-up funding for new biomedical engineering faculty members, a $275 million program that over the past 15 years has given out 80 to 100 awards annually. "The loss of these awards is going to make it difficult for new professors," admits Katona, who says he'd much rather be entering the field 3 to 4 years ago than today.

The Miami, Florida-based Wallace H. Coulter Foundation offers early career awards in bioengineering, but they provide less money and last only 2 years. A better candidate to fill Whitaker's shoes is the 5-year-old, $300-million-a-year National Institute of Biomedical Imaging and Bioengineering (NIBIB). Aware of the needs of new investigators, NIBIB gives their grant applications a 5% bonus in merit reviews. "The idea is to cut new professors extra slack so they'll have an easier time getting funded," says Deputy Director Belinda Seto.


Bioengineering boom. The number of U.S. biomedical engineering departments has skyrocketed thanks to Whitaker's sustained investment.
Big winners. With $18 million for its bioengineering building (inset), the University of California, San Diego, leads the list of Whitaker institutional award winners.

CREDITS: UNIVERSITY OF CALIFORNIA, SAN DIEGO (INSET); SOURCE: WHITAKER FOUNDATION


Thanks to the policy, Seto says seven additional biomedical engineering faculty members qualified for basic R01 grants last year, bringing the total to 24. In addition, she says young investigators can apply for exploratory R21 grants, which don't require preliminary research data and confer an average of $350,000 for 2 years. In 2005, 39 of these awards went to new faculty members.
Robert Nerem, director of the Parker H. Petit Institute for Bioengineering and Bioscience at the Georgia Institute of Technology in Atlanta, worries that such policies won't be enough. The R21s are too short, he says, and both he and Yin say that most of NIBIB's funding goes toward clinical imaging research rather than biomedical engineering. In addition, Nerem notes that NIBIB has one of the lowest applicant success rates at NIH. "So far, NIBIB has not stepped up to the plate," he says.

Another concern is that Whitaker may have overbuilt the field's academic structure, says Nerem. "Was building 60, 70, 80 departments really the right strategy?" he asks. The number of biomedical engineers graduating from many smaller schools may contribute to an oversupply in the short term, he says. That could eventually lead to a Darwinian crunch that hurts the smaller departments.

As the chair of one such department, Michael Neuman of Michigan Technological University in Houghton admits "Whitaker took a bit of a gamble with us" because of the school's isolated location on Michigan's upper peninsula, the lack of a nearby medical school, and its small life sciences program. To survive, Neuman says that programs such as his may have to change their focus from research to teaching, qualifying them for a larger university allocation based on class enrollments.

Yin expects other changes as well. As fewer faculty positions open up, graduates may find themselves doing longer postdocs, and more biomedical engineers may begin moving into new areas. Neuman has begun to see some of this already at Michigan Tech. A recent graduate joined the automotive industry and is studying the biomechanics of car accidents, he says. And a former student of Neuman's is a child abuse counselor who uses her education to assess, for example, whether a child really got his injuries from falling down a flight of stairs.

Although Whitaker may not have foreseen these changes, Katona, the foundation's president, is happy with the community's response. "I like the idea that some universities will do things differently and that not everyone is taking the same career path," he says. "We've done our job. … Now it's up to the field to have a midcourse correction if necessary."

Despite the challenges, Bhatia is optimistic that the interdisciplinary approach that permeates biomedical engineering and the growing demand for new medical technology will help sustain the field. Her new project uses nanoparticles to target drugs to tumors--the precise mixture of biology and engineering that Whitaker has tried so hard to foster. "Whitaker got us to this point by taking a risk," says Bhatia. "Now we must evolve without them."
 


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