Tag Archives: webcasts

Engineering Education Online Seminars

The Center for Engineering Educational Outreach has an engineering education seminar series that is available online: register for online broadcasts of all the remaining Tufts CEEO Seminar Series speakers for Spring 2008.

Some excellent seminars allow online participants are able to submit questions to the speaker via chat at the end of the seminar (time permitting). “Due to resource limitations, CEEO Spring 2008 Seminar Series are not currently being archived for later viewing or download.” That is a shame shame. They should post them on You Tube or SciVee or something. The advantage of asynchronous distribution of valuable content should be provided given the available tools today.

Seminars are at 4pm unless otherwise noted
Monday, Mar. 31 – The Robotic Fly: Innovations in very small robots. Rob Wood, Harvard University

Wednesday, April 9 (special time – 1:30 – in Nelson Auditorium) – Supporting Innovation: Engineers and Policy – Bill Wulf, University of Virginia.

Tuesday April 22 – LEGO Education: Looking Forward – Jens Maibom Vice President, the LEGO Group & General Manager, LEGO Education.

Monday, Apr 28 – Investigating Knowledge Fluency in Engineering Design– Ann McKenna, Northwestern University

Monday, May 12 – LEGO Americas – What does the future bring?- Soren Torp Laursen – President, LEGO Systems

Monday, June 2 – Conceptual Continuity: Using informal science literacies to promote students Science Learning – Bryan Brown, Stanford University,

Scientific American Frontiers Webcasts

All shows of the PBS TV show, Scientific American Frontiers are available online. The shows feature Alan Alda exploring a wide range of scientific ideas. Specific information for teachers if provided for each show. Shows include:

Going Deep – “In 1977, scientists aboard Alvin were exploring the Galapagos Rift in the Pacific Ocean when they made one of the most important discoveries in modern biology. Hydrothermal vents are underwater volcanoes erupting magma-heated, mineral-rich water out of cracks on the seafloor thousands of feet beneath the surface. Despite the enormous pressure and total darkness, the vents were found to support an astonishing array of animal life.”
The Dark Side of the Universe – Dark matter, dark energy and the universe.
Natural Born Robots – “The next generation of robots swim like fish, play soccer and even experience emotions.”
Science and Sports – “Science enables people to run quicker, climb higher, hit farther, and sail faster in this sports special.”

Google Tech Webcasts #4

While I worked in the Eisenhower Executive Office Building (EEOB) – part of the white house complex, I was able to hear some great speakers. However, those talks were only available to those of us that could make it to room 450 of the EEOB when it was scheduled. Google has far more speakers and they have posted webcasts of those talks online. It is great stuff, some excellent recent examples:

Michael Pollan on In Defense of Food – related: Eat food. Not too much. Mostly plants.
Cory Doctorow on Overclocked: Stories of the Future Present
Annalee Newitz, Charlie Anders, Ellen Spertus, & Jenn Shreve discuss their book She’s Such a Geek: Women Write About Science, Technology, and Other Nerdy Stuff
Daniel Goleman on Social Intelligence: The New Science of Human Relationships

Phun Physics

Coolest science toy ever

Phun is without question the greatest computer toy in the history of the universe, if this had been around when I was a kid I would be a frickin genius by now. You don’t need things any more. It’s extremely easy to use. As a starter tip, turn gravity off when you’re attaching stuff to the background (right click after selecting “affix” tool).

Very cool. Get your Phun (2D physics software) for free. Phun is a Master of Science Theises by Computing Science student Emil Ernerfeldt.

Some other very cool stuff: Cool Mechanical Simulation System – Scratch from MIT – What Kids can Learn – Lego Autopilot First Flight – Awesome Cat Cam

Scientists Reconsider Autism

Webcast – In My Language – about what gets considered thought, intelligence, personhood, language, and communication, and what does not.

Scientists Reconsider What They Think They Know

This movement is being fueled by a small but growing cadre of neuropsychological researchers who are taking a fresh look at the nature of autism itself. The condition, they say, shouldn’t be thought of as a disease to be eradicated. It may be that the autistic brain is not defective but simply different — an example of the variety of human development. These researchers assert that the focus on finding a cure for autism — the disease model — has kept science from asking fundamental questions about how autistic brains function.

A cornerstone of this new approach — call it the difference model — is that past research about autistic intelligence is flawed, perhaps catastrophically so, because the instruments used to measure intelligence are bogus. “If Amanda Baggs had walked into my clinic five years ago,” says Massachusetts General Hospital neuroscientist Thomas Zeffiro, one of the leading proponents of the difference model, “I would have said she was a low-functioning autistic with significant cognitive impairment. And I would have been totally wrong.”
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And that hurts autistic people, Dawson says. She makes a comparison with blindness. Of course blind people have a disability and need special accommodation. But you wouldn’t give a blind person a test heavily dependent on vision and interpret their poor score as an accurate measure of intelligence. Mottron is unequivocal: Because of recent research, especially the Raven paper, it’s clearer than ever that so-called low-functioning people like Amanda Baggs are more intelligent than once presumed.The Dawson paper was hardly conclusive, but it generated buzz among scientists and the media. Mottron’s team is now collaborating with Massachusetts General Hospital’s Zeffiro, a neuroimaging expert, to dig deeper.

Continue reading →

YouTube Access Denied

Millions of users around the globe could not access YouTube for a couple hours yesterday. Why?

Well to understand, we need to start with how you normally connect to a web site. You click on a link to youtube.com. Your ISP looks up the internet address for youtube.com by looking at internet routing tables. Each domain has a name server that provides the IP address for where it should be found (for example, an IP address that shows youtube.com is 208.65.153.238).

Well what happened in this case is Pakistan decided to prevent anyone in Pakistan from accessing YouTube because the government didn’t like some video. The way Pakistan decided to accomplish this was to update their routing table to just direct all traffic that was meant to go to YouTube to a phony address which would then return nothing.

Why did many outside of Pakistan lose access to YouTube? Well their version of the routing table leaked out of Pakistan through PCCW (large internet provider), Then other internet providers adopted the incorrect information, until many around the globe were being directed to the wrong place.

You might find it amazing the routing system could allow such a thing to happen – it doesn’t seem very secure. You are right, that it doesn’t seem very sensible. When the internet was created some protocols were established that made sense then but don’t necessarily make sense for what the internet has become.

The problem was fixed when Google’s YouTube engineers contacted PCCW to inform them of the problem and have them correct it. I think if it was my site instead, I would have had difficulty figure out what was going on 🙂 Once PCCW corrected their routing tables the fixed flowed through the system and everyone was able to see the great stuff like Marissa Mayer discussing Innovation at Google.

I would imagine Internet2 (well on its way to a computer near you) and IPv6 will take not be so venerable to such a mistake.

Science Explains: Flame Color

Have you ever wondered why some flames are yellow, while others are blue? Growing up, I was always told that it was a matter of temperature, that hot flames were blue and cooler flames were yellow. While there is a temperature difference, that difference is a “symptom” of what is going on, not the cause of the color difference.
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Does that mean that there is solid stuff inside the candle flame? Let’s find out. Light the candle and be sure it is steady and won’t fall over. Hold the bottom of the plate in the candle flame for a few seconds. When you remove the plate, it has turned black!!! Don’t worry. You have not ruined it. Let it cool for a minute. Remember, it is HOT! Once it has cooled, rub your finger over the black spot. The black rubs off.

As I was Saying… More Dinosaur Discoveries

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As I was Saying… Tiny flying reptile with 10 inch wingspan found:

Palaeontologists have found a tiny flying reptile that, with a wingspan of less than 10 inches, is the smallest relative of the largest flying creature ever. Pterosaurs, the first creatures with backbones to take to the air, ruled the skies during the days of the dinosaurs and died out with them some 65 million years ago.

They came in a huge range of sizes: there were gull-sized creatures, such as Anurognathus, giants such as Anhanguera (“Old Devil”) and Tupuxuara with wing spans of about four metres, and massive flyers like Quetzalcoatlus, with wingspans of more than 10 metres. Now a miniature version is described by Xiaolin Wang
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The remains were found in the Early Cretaceous Jiufotang Formation (120 million years ago), western Liaoning, China, and suggest it probably weighed between 30 and 50 grams. “This small pterosaur looked like a sparrow or swallow in size,” adds Dr Wang.” The creature is the smallest toothless pterosaur and the smallest to live during the Cretaceous period.”

Jumping Savannah Cat

The Savannah cat breed is from the mating of a male African serval cat to a female domestic cat. The serval grows to from 9 to 20 kg (20-44 lbs) and lives 12-20 years in the wild. It is closely related to the African Golden Cat and the Caracal. The cats in the webcast are Savannahs.

Great Physics Webcast Lectures

One great example of MIT’s Open Course Ware initiative is Physics I: Classical Mechanics. This course features lecture notes, problem sets with solutions, exams with solutions, links to related resources, and a complete set of videotaped lectures. The 35 video lectures by Professor Lewin, were recorded on the MIT campus during the Fall of 1999. These are some great lectures by a entertainer and educator. Some lecture topics: Newton’s Laws, Momentum – Conservation of Momentum – Center of Mass, Doppler Effect – Binary Stars – Neutron Stars and Black Holes, The Wonderful Quantum World – Breakdown of Classical Mechanics. What a wonderful web it is.