Author Archives: curiouscat

NSF Robotics Report

Today, NSF supports mechanical engineers, electrical engineers, computer scientists and other researchers as they develop future generations of intelligent robots. These engineers and computer scientists cooperate with biologists, neuroscientists and psychologists to exploit new knowledge in the study of the brain and behavior. NSF also supports education activities that use robots as a platform for studying mechanics, electronics, software and other topics.

Robots and Biology:

A research team at the University of Illinois led by Fred Delcomyn is one group that has developed a six-legged robot modeled after cockroaches, in this case the American cockroach Periplaneta americana. The researchers hope to mimic the insect’s extraordinary speed and agility by learning and applying the biological structure and principles in the robot’s design.

Insect flight, particularly the airborne maneuvers of the fruit fly Drosophila melanogaster, has been the decade-long research pursuit of Michael Dickinson at Caltech. Dickinson has tethered flies to poles and mimicked them with robots to examine the mechanics of their muscles and the flight control behind the rapid rotation of their wings.

Scientifically Illiterate

216 Million Americans Are Scientifically Illiterate:

Let’s start by focusing on the positive. In just 17 years, over 50 million people have been added to the rolls of Americans who can understand a newspaper story about science or technology, according to findings presented last weekend at the American Academy for the Advancement of Science’s annual meeting in San Francisco.

Michigan State University political scientist Jon D. Miller, who conducted the study, attributed some of the increase in science literacy to colleges, many of which in recent years have required that students take at least one science course. Miller says people have also added to their understanding through informal learning: reading articles and watching science reports on television.

Okay, now let’s talk (dare I say rant?) about the 200 million Americans out there who cannot read a simple story in, say, Technology Review or the New York Times science section and understand even the basics of DNA or microchips or global warming.

This level of science illiteracy may explain why over 40 percent of Americans do not believe in evolution and about 20 percent, when asked if the earth orbits the sun or vice versa, say it’s the sun that does the orbiting–placing these people in the same camp as the Inquisition that punished Galileo almost 400 years ago.

Water Jacket

Four youths design India’s first water jacket:

Four engineering students, have designed a water jacket, a wearable vest capable of holding water that when strapped to the body, provides a cushioning effort to the wearer by distributing the weight of the water evenly.

“About 20 kg of water can be stored in this jacket – 10 in the front chamber and an equal volume of liquid in the back chamber. The chambers are designed to maintain a balance in the body so that no part of the body gets strained,” says T R Neelakantan, one of the innovators, who was recently awarded National Innovation Foundation’s (NIF) fourth national awards by President A P J Abdul Kalam in New Delhi.

The other three contributors are Balaji T K, Kunal Kumar and Arun Rosh, all students at the S R M Engineering College, Chennai.

Hiring Software Developers

Interviewing and Hiring by Tom Van Vleck

“Let’s take a break from talking to people. Why don’t you have a seat in this empty office, and write a small program. Use any language you want to. The program can do anything you’d like. I’ll be back in about 30 minutes, and ask you to explain the program to me.”
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It seemed reasonable, if the job was programming, to ask people how they felt about actually doing some. And sure, it caused interview stress. We allowed for that in our evaluation; but the job was going to be stressful at times too, and we needed people who could enjoy it. The important thing was not what the candidate wrote, but the account he or she gave of it.
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And you’d be surprised how many people couldn’t do it. Couldn’t write a simple program and talk sensibly about it. They’d huff, and bluster, and make excuses, and change the subject, rather than actually write some code. “Oh, I think of myself as more an architect than a coder.”

Go Badgers

The Wisconsin Badgers are ranked as the number 1 college basketball team for the first time ever. Go Badgers.

Cool Falkirk Wheel Canal Lift

Falkirk Wheel:

The wheel, which has an overall diameter of 35 metres, consists of two opposing arms which extend 15 metres beyond the central axle, and which take the shape of a Celtic-inspired, double-headed axe. Two sets of these axe-shaped arms are attached about 25 metres apart to a 3.5 metre diameter axle. Two diametrically opposed water-filled caissons, each with a capacity of 80,000 gallons (302 tons), are fitted between the ends of the arms.

These caissons always weigh the same whether or not they are carrying their combined capacity of 600 tonnes of floating canal barges as, according to Archimedes’ principle, floating objects displace their own weight in water, so when the boat enters, the amount of water leaving the caisson has exactly the same as the boat. This keeps the wheel balanced and so, despite its enormous mass, it rotates through 180Â° in less than four minutes while using very little power. It takes just 22.5 kilowatts (kW) to power the electric motors, which consume just 1.5 kilowatt-hours (kWh) of energy in four minutes, roughly the same as boiling eight kettles of water.

Pretty cool – follow link for more info and larger image. Less cool canal photos: Monocacy Aqueduct in Maryland, USA,here is the aqueduct (in this case, a bridge that is an carries a water for a canal).

Article on Sergey Brin

The Story of Sergey Brin by Mark Malseed:

In the summer of 1990, a few weeks before Sergey’s 17th birthday, Michael led a group of gifted high school math students on a two-week exchange program to the Soviet Union. He decided to bring the family along, despite uneasiness about the welcome they could expect from Communist authorities. It would give them a chance to visit family members still living in Moscow, including Sergey’s paternal grandfather, like Michael, a Ph.D. mathematician.
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When he won a prestigious National Science Foundation scholarship for graduate school, he insisted on Stanford. (M.I.T. had rejected him.) Aside from the physical beauty of Stanford’s campus, Sergey knew the school’s reputation for supporting high-tech entrepreneurs. At the time, though, his focus was squarely on getting his doctorate.

He provides another example of someone born outside the USA providing great benefit to the US. The United States has done very well allowing others to flourish here.

Shouldn’t Google Toolbar spell check have Sergey and Brin as words?

Bionanotechnology Future

Commercialization and Future Developments in Bionanotechnology by Marcel P. Bruchez:

The lack of specifiability of our modules was a key challenge to commercialization. Specification will require detailed basic investigations of the properties and chemistry of nanoparticle materials in biological systems. In addition, we will have to establish analytical tools and quantitative descriptors to detail the distribution of properties present in a population of nanoparticles. This is categorically different from specification for organic molecules and proteins, in which properties can be effectively described by an average. In nanomaterials, performance properties may be dominated by a relatively small population of particles, so averaging cannot always be used.

Interesting paper, from The Bridge, an open-access publication of the National Academy of Engineering. This issue includes papers from the 12th U.S. Frontiers of Engineering including: New Mobility: The Next Generation of Sustainable Urban Transportation and Creating Intelligent Agents in Games.

Educational Institutions Economic Impact

I believe investing in creating an environment where science and engineering endeavors will flourish will greatly benefit the economy. Some previous posts discussing these ideas include: Great Engineering Schools and Entrepreneurism, Engineering Future Economic Success, Science Research and the Economy and China’s Economic Science Experiment.

Wisconsin’s effort is hardly unique, but I grew up in Madison and my father taught Chemical Engineering, Statistics, and more at the UW so I pay attention to the efforts in Madison. The Wisconsin Alumni Research Foundation has been one of the most successful attempts to take academic work and create successful business efforts to benefit the university, the professors and the economy overall. Their mission: “Moving inventions arising from the university’s laboratories to the marketplace for the benefit of the university, the inventors and society.”

Building Wisconsin’s Economy illustrates how the University of Wisconsin at Madison attempts to focus on creating economic benefit, which I think is a good idea. Economic benefit is not the only purpose, but it is worthy of focus.

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Robots for Space Exploration

Robot Subs in Space James Vlahos:

But now, after spending nearly three decades on the margins of the space industry, Stone is closer than he’s ever been to proving that caves are the best earthly training ground for exploring space. Backed by a $5-million grant from NASA, he is developing a robot called DepthX that may turn out to be the most advanced autonomous underwater vehicle (AUV) ever. Like its inventor, DepthX is a caver, capable of navigating constrained, obstacle-filled environments. Its theoretical mission, though, is bold even by Stone’s standards: a hunt for extraterrestrial life on the Jovian moon of Europa.