Author Archives: curiouscat

Why Insects Can’t Fly Straight at Night

Why Insects Can’t Fly Straight at Night by Nicolas van der Leek:

Well, it’s simple really. The structure of their eyes (moths, mantises and plenty of other bugs) is distinctive. Under the microscope their eyes resemble a bunch of long tubes. So when the moth or mantis encounters an artificial light, suddenly when it swoops by the light slips out of its field of vision, and it swings round to get it to shine back into the tubes, and at a constant angle. Hence the chaotic, circular flying. They’re attempting to keep the light coming in at the same angle into the tube structure of their eyes.

Increasing American Fellowship Support for Scientists and Engineers

A great research paper is available today from the Brookings Institution: Investing in the Best and Brightest: Increased Fellowship Support for American Scientists and Engineers by Richard B. Freeman. For those interesting in science and engineering education and/or economic policy I recommend it.

In 2005, the United States employed about 31 percent of the world’s scientist and engineer researchers and financed 35 percent of R&D while accounting for 5 percent of the world’s population and 21 percent of the world’s GDP…
The U.S. share of global science and engineering activity is declining, however, and will continue to decline

I agree the declining trend is likely to continue, mainly due to the improvement of science and engineering efforts worldwide, see, for example: Diplomacy and Science Research and – U.S. Slipping on Science – Phony Science Gap?.

The growth of high-tech employment in Silicon Valley and in university-based locations of scientific excellence suggests that innovation, production, and employment in high-tech fields occur largely in areas strong in basic science.10 The supply of scientists and engineers is a major factor in the location of these centers of excellence.

Again I agree. I am in danger of confirmation bias since this report basically reinforces what I believe – so of course I find it worthwhile.

While no one can be sure of the particular areas where an increased number of scientists and engineers might make their greatest contribution, our recent history is filled with examples where young innovative researchers have made major contributions to economic progress: The Internet. The biotech industry. The PC. The mathematics of cryptography that underpins Internet commerce.

Again I agree. This is why so many countries have been devoting significant resources to improving their science and technology infrastructure – the economic benefits of doing so.
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What Graduates Should Know About an IT Career

Here is some decent and simple advice. It is obviously not comprehensive or completely accurate but a is a very quick addition to other thoughts on the topic: What every graduate should know before entering the IT industry:

Your whole career in IT will be spent updating your skills
This follows on from the last point. If your skills become out of date, you will become vulnerable to losing your career. Because of this, IT is a career where it is difficult to thrive without having a real passion for it. Your employer may send you on expensive training courses, but unless you read up and experiment in your own time, you’re going to fall behind.

See more science, engineering and technology career tagged posts.

Disrupting the Replication of Bacteria

UW-Madison researchers develop novel method to find new antibiotics:

Filutowicz’s approach involves looking for new drugs that render bacteria harmless by blocking the replication of—and thus eliminating—some of their DNA.

Bacterial DNA comes in two forms: chromosomal DNA, which is required for life, and plasmid DNA, which is not. The nonessential plasmid DNA contains many undesirable bacterial genes, including those that confer antibiotic resistance or lead to the production of toxins.

Filutowicz is seeking antibiotics that would selectively disrupt the replication of plasmid DNA, so that when bacteria reproduce, they would produce plasmid-free offspring that are harmless or susceptible to traditional antibiotics. Such compounds could dramatically alter the character of some of our nastiest microbial adversaries.

Indian Institute of Technology Thoughts

An interesting interview of an IIT graduate and CEO that really discusses how IIT graduates can help the Indian economy more than the title indicates – 5 things entrepreneurs must do to succeed:

First and foremost what is required is empathy and a genuine concern to improve the lot of the people. Next, there has to be a coordinated effort between the government and other agencies. Four focussed initiatives in each district around education, agriculture, industry and social equality could be identified and on an experimental basis ten districts could be identified and handed over to IIT-ians who have the zeal to bring about the transformation with a time bound agenda, with the commitment to support them through various agencies.

Google’s Start by Brin and Page

The Anatomy of a Large-Scale Hypertextual Web Search Engine by Sergey Brin and Lawrence Page, 1998:

This paper addresses this question of how to build a practical large-scale system which can exploit the additional information present in hypertext. Also we look at the problem of how to effectively deal with uncontrolled hypertext collections where anyone can publish anything they want.

See more research papers from Google via Google Labs.

Science and Engineering Scholarships and Fellowships

I have added a new page on our web site that includes links to online resources with advice on applying for and winning science and engineering scholarships and fellowships. That page also includes a list of the largest science and engineering scholarships and fellowships. Please share your comments and suggestions for additions for that page.

Human Sonar – Echolocation

The Mystery of Sonar Boy:

Ben Underwood’s echolocation isn’t a hoax, but it’s not an unexplained mystery, either. Ben really can sense nearby objects with reflected sound waves. But so can you.
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Go ahead and try out the skill you never knew you had. First, close your eyes and put on a blindfold, and then ask a friend to move a frying pan forward and backward in front of your face. Now start making noises—any noises you want. You can click your tongue like Sonar Boy, or you can whistle, or you can sing a scale. With a little bit of practice, you’ll be able to tell when the pan is close to you and when it’s not.

Also see, two interesting videos, CBS story and an Ellen show appearance. And read a 2003 BBC article on how the Blind ‘see with sound’.

Computer Image Tagging

Researchers Teach Computers How to Name Images By ‘Thinking’

Penn State researchers have “taught” computers how to interpret images using a vocabulary of up to 330 English words, so that a computer can describe a photograph of two polo players, for instance, as “sport,” “people,” “horse,” “polo.”
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More than half the time, the computer’s first tag out of the top 15 tags is correct. In addition, for 98 percent of images tested, the system has provided at least one correct annotation in the top 15 selected words. The system, which completes the annotation in about 1.4 seconds…

This seems to be interesting, but still has a long way to go. Google has been using a human based process for the last few month. They show two people the same image and if their tags match Google accepts that tag as good.

Anti-microbial ‘paint’

anti-microbial ‘paint’ kills flu, bacteria

A new “antimicrobial paint” developed at MIT can kill influenza viruses that land on surfaces coated with it, potentially offering a new weapon in the battle against a disease that kills nearly 40,000 Americans per year. If applied to doorknobs or other surfaces where germs tend to accumulate, the new substance could help fight the spread of the flu, says Jianzhu Chen, MIT professor of biology.
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The “antimicrobial paint,” which can be sprayed or brushed onto surfaces, consists of spiky polymers that poke holes in the membranes that surround influenza viruses. Influenza viruses exposed to the polymer coating were essentially wiped out. The researchers observed a more than 10,000-fold drop in the number of viruses on surfaces coated with the substance.
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One of the benefits of the new polymer coating is that it is highly unlikely that bacteria will develop resistance to it, Klibanov said. Bacteria can become resistant to traditional antibiotics by adjusting the biochemical pathways targeted by antibiotics, but it would be difficult for bacteria to evolve a way to stop the polymer spikes from tearing holes in their membranes.