Author Archives: curiouscat

Non-Newtonian Fluid Demo

via: A pool filled with non-newtonian fluid:

They filled a pool with a mix of cornstarch and water made on a concrete mixer truck. It becomes a non-newtonian fluid. When stress is applied to the liquid it exhibits properties of a solid. Video was recorded at Barcelona, Spain. A non-Newtonian fluid is a fluid in which the viscosity changes with the applied strain rate. As a result, non-Newtonian fluids may not have a well-defined viscosity.

USA Science and Engineering Degree Data – 2007

A huge amount of interesting data can be found in NSF’s report on the USA: Women, Minorities, and Persons with Disabilities in Science and Engineering (pdf)

Since 2000 women have received more science and engineering bachelors degrees than men. Men still receive more master’s and doctoral degrees in science and engineering.

2004 bachelor’s degrees	Female	Male
Engineering	13,257	51,418
Computer Science	14,406	42,999
Psychology	64,208	18,302
Science and engineering	227,813	224,525
Total non-S&E	583,004	371,667

200,000 more for bachelor’s degrees for women – wow. This is just a continuation of a trend but still is fairly amazing.

2004 Master’s degrees for US citizens	Female	Male
Engineering	7,135	26,737
Computer Science	6,195	13,658
Psychology	11,950	3,348
Science and engineering	51,420	66,631
Total non-S&E	276,782	160,704

2004 Doctoral degrees for US citizens	Female	Male
Engineering	1,014	4,353
Computer Science	195	690
Psychology	2,245	1,042
Science and engineering	9,819	15,728

Some more interesting data: 90% of Asian, 60% of Native Hawaiian/other Pacific Islander 40% of Hispanic doctoral S&E faculty were born outside the United States. Over 80 % of white, American Indian/Alaska Native, and multiple race doctoral S&E faculty were born in the United States.

Robo-Salamander

Robot Salamander

Novel salamander robot crawls its way up the evolutionary ladder:

A group of European researchers has developed a spinal cord model of the salamander and implemented it in a novel amphibious salamander-like robot. The robot changes its speed and gait in response to simple electrical signals, suggesting that the distributed neural system in the spinal cord holds the key to vertebrates’ complex locomotor capabilities.

In a paper appearing in the March 9, 2007 issue of the journal Science, scientists from the EPFL in Switzerland and the INSERM research center/University of Bordeaux in France introduce their robot, Salamandra Robotica. This four-legged yellow creature reveals a great deal about the evolution of vertebrate locomotion. It’s also a vivid demonstration that robots can be used to test and verify biological concepts, and that very often nature herself offers ideal solutions for robotics design.

The researchers used a numerical model of the salamander’s spinal cord to explore three fundamental issues related to this vertebrate’s movement: what were the changes in the spinal cord that made it possible to evolve from aquatic to terrestrial locomotion? How are the limb and axial movements coordinated? And how is a simple electrical signal from the brain stem translated by the spinal cord into a change in gait?

$15 Million for San Jose State College of Engineering

San JosÃ© State Receives $15 Million Gift for College of Engineering:

The $15 million gift for the College of Engineering will be used to create endowments to support initiatives and programs in the areas of student and faculty development, leading-edge engineering, innovation and globalization. SJSU will request to officially name the college – the Charles W. Davidson College of Engineering – at the California State University Board of Trustees meeting in March.

“Engineering education has driven the success of Silicon Valley, and San JosÃ© State University has been at the center of this success,” said Belle Wei, dean of the College of Engineering. “Chuck Davidson believes in the college’s mission to enable diverse and promising students to receive a quality, holistic engineering education. His gift will transform the college and help us achieve a new level of excellence in preparing our students to thrive in today’s dynamic and competitive world.”

Electric Cars

The March NSF Cafe Scientifique meeting was about Electric Cars. The presenters were from the Electric Vehicle Association of DC (that site has quite a few links on this topic). In the talk the presenters mentioned Ford had produced electric cars in the 1920’s. PBS on Timeline on Electric Car History:

1893 – A handful of different makes and models of electric cars are exhibited in Chicago.
1897 – The first electric taxis hit the streets of New York City early in the year. The Pope Manufacturing Company of Connecticut becomes the first large-scale American electric automobile manufacturer.
1899 – Believing that electricity will run autos in the future, Thomas Alva Edison begins his mission to create a long-lasting, powerful battery for commercial automobiles. Though his research yields some improvements to the alkaline battery, he ultimately abandons his quest a decade later.
1900 – The electric automobile is in its heyday. Of the 4,192 cars produced in the United States 28 percent are powered by electricity, and electric autos represent about one-third of all cars found on the roads of New York City, Boston, and Chicago.

1893 was the famous Chicago World’s fair where the first Ferris Wheel was constructed and the American Society for Engineering Education was formed (I work for ASEE now). Photo by John Hunter shows a partial view of the meeting space, which is held inside the NSF headquarters.

Use the Force

What geek wouldn’t want to be a Jedi?

Behold Project Epoc, a wireless headset developed by Australian start-up Emotiv Systems. The electrodes embedded in the set read your brain waves, figure out what you’re thinking and, yes, allow you to bend objects on the screen to your omnipotent will.
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Let’s be clear, though: Epoc isn’t anywhere near as easy as picking up a control pad and learning to play a game. The software uses adaptive learning to figure out what your brains’ electrical signals look like when you’re thinking about lifting, pushing, or rotating objects. That takes time (which is why Dave used the headset and not me).

Still, I think I’d be willing to sacrifice an hour of my life for a taste of the Jedi’s power. The effect is amazing, after all – c’mon, this is mind-control people!

Ok, this is not yet available and needs quite a bit more to make consumers demand them – but if it can do what they say that is interesting start. Project Epoc

When Galaxies Collide

When Galaxies Collide by Kathleen M. Wong:

When two galaxies collide, what transpires is very different from, say, one billiard ball smacking into another. Instead of ricocheting away in opposite directions, galaxies are much more likely to meld together. After all, Ma points out, “Galaxies are mostly empty, so the stars and dark matter mostly just pass each other by. The chances of two stars hitting each other is tiny.” In fact, only one percent of the masses of these galaxies consists of matter we can see, such as stars and gases. The rest consists of dark matter-material we can’t see but astronomers have inferred from many observations must exist.

Actual galaxy mergers are hard to find and even harder to view. So Ma is doing the next best thing – simulating galaxy collisions using computer models. This way, she can specify the types of mergers she wants to analyze head-ons versus glancing blows; galaxies of different masses and shapes; even the occasional threesome – and analyze their fates with mathematical precision.

Your Online Identity

Social Networking Sites: Enter At Your Own Risk by Amina Sonnie, IEE-USA Today’s Engineer:

Your Career Builders profile may be the professional face you wear online, but sites like MySpace or Facebook may be perceived as the “real” you. Many college students and entry-level employees may think that these social networking sites are not part of the adult world and forget that they are being viewed as an adult by their employer. To put a different face on the “real,” the first thing you may want to do is Google yourself. What comes up first?

Try me: John Hunter – usually my homepage or something about the another, John Hunter, the “father of modern surgery”, no relation. I found the above via: Facebook is public not private where John Dupuis added:

As an aside, when I’m on a search committee I always Google at least the short listed candidates and often many of the other applicants as well. I’ve never found anything shocking. On the other hand, I’m always surprised when I can’t find anything about a candidate. How can you be an active professional (or even an aspiring one) in this day and age and leave no impression on the web?

I agree.

As a society, we have a large bias toward punishing acts of commission – versus acts of omission. So the failure to have established a credible online presence is not normally as big a problem as creating one people object to. However, people should not become so fearful of doing something wrong that they fail to take advantage of the opportunity to enhance their career with a positive online presence: Ackoff on errors of omission.

Engineering a Better Blood Alcohol Sensor

Scott McCain - Duke Student

Scott McCain Aims for Better Blood Alcohol Sensor:

If third-year engineering graduate student Scott McCain gets his way, the fight against drunk driving may soon be waged with a new, non-invasive blood alcohol sensor that could make standard blood or breath sample tests obsolete. The St. Louis native’s interdisciplinary research – a combination of engineering, physics and computer science – aims to build a small and inexpensive optical device capable of using harmless light to pass through skin and directly determine blood alcohol concentration.

“The device uses light at wavelengths at which skin essentially becomes transparent,” McCain said. “We shine a laser through tissue where it interacts with blood. By analyzing the scattered light that comes back out, we can determine much about the blood’s chemical content.”
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Similar devices hold promise for determining other constituents of blood. For example, they could measure cholesterol or blood sugar in a matter of minutes, McCain said. Ultimately, the goal is to have a sensor that could report a medical reading in less than 10 seconds.
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“We don’t yet know if our blood alcohol sensor will really work,” said McCain. “It wouldn’t be research if we knew what it was all about.”

A Life-changing Gift

A nice human interest story, A life-changing gift:

All children have dreams. Many boys dream of growing up and becoming prime minister, a pilot, a doctor or an astronaut. For young Anusorn Pinsuwan, however, he didn’t dream that much. ”I just wanted to study. Then I could dare to dream of being something else, like an engineer or a teacher. But I didn’t think I could make my dreams come true as I didn’t have the money to study,” said Anusorn, now 25. ”But, at least, we shouldn’t sabotage our own dreams. We should give ourselves a chance.”

One of his dreams has been achieved, thanks to the support of the Bangkok Post readers, through a Bangkok Post Foundation scholarship. After excelling at Rajamangala University of Technology, Tak campus, he secured a place at King Mongkut’s Institute of Technology, North Bangkok, studying civil engineering. He graduated in 2005, and his first job offer from a private construction company followed shortly.