Category Archives: Engineering

Solid-State Drives For Laptops

SanDisk Drops Price On Solid-State Drives For Laptops

The products are scheduled to be available in the middle of this year.
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SanDisk claims the SSDs are more than five times faster than the fastest 7,200 revolutions per minute hard-disk drives used in laptops. The vendor also claims its devices are more than twice as fast as SSDs that shipped last year.

The latest devices operate at a 40,000 vRPM, or virtual RPM, a metric used to compare the speeds of SSDs and HDDs. The SanDisk drives read and write data at 200 MBps and 140 MBps, respectively.

“With large capacities and aggressive pricing, SSDs are poised to enter mainstream corporate notebooks in 2009,” Rich Heye, senior VP and general manager of SanDisk’s SSD business unit, said in a statement.
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SSDs use flash memory chips to store data, so have no moving parts. As a result, the technology is quieter, uses less power and is more reliable than HDDs. In addition, SSDs are faster and are more rugged.

NSF Funding for Engineering Education, Curriculum, and Infrastructure

The Innovations in Engineering Education, Curriculum, and Infrastructure (IEECI) program supports research which addresses four aspects of engineering education: (1) how students best learn the ideas, principles, and practices to become creative and innovative engineers, and how this learning is measured (2) how application of cyberlearning resources of networked computing and communication, interactive visualization capabilities, and well designed user interfaces can be used to develop easily transportable tools and systems with low barriers to adoption which significantly improve learning, (3) integration of sustainability into engineering education, and (4) future directions of U.S. engineering doctoral programs.

Two types of awards will be supported: Expansion Projects (approximately 10 grants are anticipated) will only be available for area (1), Innovations in Teaching and Learning. Exploratory Projects (25-30 grants are anticipated) will be available in areas (2-4).

Anticipated Funding Amount: The total anticipated funding in fiscal year 2009 is $8,500,000. Expansion Projects will be funded at a level of up to $400,000. Exploratory Projects will be funded at a level up to $150,000, but exploratory projects involving multiple universities may apply for grants up to $200,000.

Full proposals are due by 11 March 2009.

Providing Computer to Remote Students in Nepal

photo of students using computers in Nepal

Pupils conquer fear of computers

“I was really scared when I saw the computer,” he says. “I didn’t go near it. I was worried it might explode and kill me. “It was only when the teacher called me saying it was harmless that I went into the room, but I still hesitated.” Things have changed now, he adds.

“I’m feeling much better. The E-library has helped with my studies. “We can see the periodic table of science, and also maps and other geography things in a pictorial way that is easy to understand. It’s not only that – we can also play games and have fun.”

Kamal says his parents were very excited when he told them about the computer and came to watch the very next day. It was not only Kamal. His computer teacher, Shankar Prajapati, says all the pupils were afraid. “They all worried they would catch some virus and fall ill or even die. But now they are familiar with computers,” he says.

“Even we teachers are gaining knowledge from the E-library. It’s really helpful for us, too. “The students can see science experiments carried out on screen and search for whatever they want in the encyclopaedia.
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This is a free and open-source (accessible to everyone) package which connects one powerful central server in the school, using the Linux operating system, to a number of diskless low-end computers. When linked to the server, each computer receives a full Linux desktop.

Read more about the Help Nepal Network’s eLibrary program. Photos from this web site shows students in Nepal using computers.

In the face of rapidly changing technological advancement and the exorbitant cost of proprietary hardware and software solutions, which had stymied Nepal in attempting to participate in ICT for development, the use for Free and Open Source Software (FOSS) is emerging as a solution.
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Linux Terminal Server Project (LTSP) can be a low cost solution for deprived communities who cannot afford a bigger volume financial expense.
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LTSP, a system that works with only one central high end server and other diskless low-end thin client computers, allows to run Linux on a server, and then use thin clients (almost any computer will do) to connect to the server and receive a full-blown Linux desktop.

I believe strongly in the ability of kids to learn if they are just provided some tools that help them do so. See a great post on Hole in the Wall computers.

Science and Engineering Fiction

cover of The Ice Limit

We always hear of science fiction. But what about engineering fiction? Well I finished reading a book this weekend that was at least as much engineering fiction as science fiction: The Ice Limit by Douglas Preston and Lincoln Child. It was a fun read. I enjoy the books those two collaborate on.

I also finished reading another book recently. I recommend Panic in Level 4 by Richard Preston. He wrote The Hot Zone, which is also great. He writes what “literary nonfiction” or “creative nonfiction.” The book includes 2 stories on math, about the Chudnovsky brothers, and 4 on biological science stories. I believe they were all previously stories in the New Yorker.

Douglas Preston and Richard Preston are brothers. It is just a happy co-incidence I happened to read them both recently. I just noticed the last names were the same so I looked online to see if they were related. Here is a nice bit from Douglas Preston’s web site:

As they grew up, Doug, Richard, and their little brother David roamed the quiet suburbs of Wellesley, terrorizing the natives with home-made rockets and incendiary devices mail-ordered from the backs of comic books or concocted from chemistry sets.
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After unaccountably being rejected by Stanford University (a pox on it), Preston attended Pomona College in Claremont, California, where he studied mathematics, biology, physics, anthropology, chemistry, geology, and astronomy before settling down to English literature.

Also I read Tyrannosaur Canyon by Douglas Preston a few months ago. I preferred it to Ice Limit actually (but it didn’t have the engineering fiction angle) just a fun thriller with some science fiction thrown in.

Rumors of Software Engineering’s Death are Greatly Exaggerated

Rumors of Software Engineering’s Death are Greatly Exaggerated by Steve McConnell

Indeed, one of the hallmarks of engineering as opposed to science is that engineers will work with materials whose properties are not entirely understood, and they’ll factor in safety margins until the science comes along later and allows more precision in the engineer’s use of those materials.
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Software engineering already has been defined as engineering, we have an international reference standard for that definition, the field’s two largest professional bodies have jointly adopted a professional code of conduct for software engineers, we have accreditation standards for university programs in software engineering, we have university numerous programs that have already been accredited, and several countries are licensing professional engineers in software.

Open Source Abandoned by OLPC

Not Free at Any Price by Richard M. Stallman

When the OLPC appeared, it fell one step short of full freedom: the highly publicized wireless mesh network device, which allows OLPCs to connect to the Internet through nearby OLPCs, required a non-free program. This piece of non-free code prevented me from fully endorsing the OLPC. But that would not stop me from using one: I would just have to delete the non-free code and do without the internal wireless device.

The OLPC had practical inconveniences, too: no internal hard disk, a small screen, and a tiny keyboard. In December 2007 I test-drove the OLPC with an external keyboard, and concluded I could use it with an external disk despite the small screen. I decided to switch.
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If you want to support a venture to distribute low-priced laptops to children, wait a few months, then choose one that donates MIPS-based machines that run entirely free software. That way you can be sure to give the gift of freedom.

He is more anti-microsoft than I am but I agree with this contention that what we should support is a open source solution to provide laptops to children around the world. It is a shame, I really liked the potential for OLPC. I still wish them success I just am not interesting in directly supporting that effort but instead would like an alternative open source solution.

The Sylvania Netbook is available from Amazon now with the Ubuntu operating system (linux version). I use Ubuntu and it is excellent.

High School Students to Intern in Engineering

Pasco high school students to work as interns in engineering

Five area manufacturers announced Tuesday that they will join forces with River Ridge High’s new engineering career academy, which opens in fall 2009, to provide students work opportunities while they are still in school.
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“The idea is to start a program of internships starting in the 10th grade,” said Wahnish, who presents the idea to the Florida Engineering Society today.

By the time graduation rolls around, students will have had three six-week apprenticeships and received industry certifications in computer-assisted design and other applications. They also will be ready to go to work or enroll in a university program. Even those who go to work still would attend college at least two days a week.

Appropriate Technology: Self Adjusting Glasses

Self Adjusting Glasses for 1 billion of the world’s poorest see better

What if it were possible, he thought, to make a pair of glasses which, instead of requiring an optician, could be “tuned” by the wearer to correct his or her own vision? Might it be possible to bring affordable spectacles to millions who would never otherwise have them?

More than two decades after posing that question, Josh Silver [a physics professor at Oxford] now feels he has the answer. The British inventor has embarked on a quest that is breathtakingly ambitious, but which he insists is achievable – to offer glasses to a billion of the world’s poorest people by 2020.

Some 30,000 pairs of his spectacles have already been distributed in 15 countries, but to Silver that is very small beer. Within the next year the now-retired professor and his team plan to launch a trial in India which will, they hope, distribute 1 million pairs of glasses. The target, within a few years, is 100 million pairs annually.
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Silver has devised a pair of glasses which rely on the principle that the fatter a lens the more powerful it becomes. Inside the device’s tough plastic lenses are two clear circular sacs filled with fluid, each of which is connected to a small syringe attached to either arm of the spectacles.

The wearer adjusts a dial on the syringe to add or reduce amount of fluid in the membrane, thus changing the power of the lens. When the wearer is happy with the strength of each lens the membrane is sealed by twisting a small screw, and the syringes removed. The principle is so simple, the team has discovered, that with very little guidance people are perfectly capable of creating glasses to their own prescription.
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Oxford University, at his instigation, has agreed to host a Centre for Vision in the Developing World, which is about to begin working on a World Bank-funded project with scientists from the US, China, Hong Kong and South Africa. “Things are never simple. But I will solve this problem if I can. And I won’t really let people stand in my way.”

Cool. A couple points I would like to make:

1) this professor is making a much bigger difference in the “real world” than most people ever will. The idea that professors are all lost in insignificant “ivory towers” is a very inaccurate view of what really happens.
2) Spending money on this kind of thing seems much more important for the human race than spending trillions to bail out poor moves by bankers, financiers… It sure seems odd that we can’t find a few billion to help out people across the globe that are without basic necessities yet we can find trillions to bail out the actions of few thousand bad actors.

Online Education in Science, Engineering and Medicine

The National Academies state that they want to develop websites, podcasts, and printed information featuring the topics in science, engineering, and medicine that concern you the most, and that you’d like to understand better. Great. I am very disappointed in how little great material is available now (from them, and others).

Fill out their survey and hope they hire some people that actually understand the web. I must say the survey seems very lame to me.

The internet provides a fantastic platform for those that have an interest in increasing scientific literacy. But there is still very little great material available. There are a few great resources but there should be a great deal more. The National Academies of Science have a particularly stilted web presence – it is as though the web were just a way to distribute pages for people to print out. Though they are very slowly getting a bit better, adding a small amount of podcasts, for example. While hardly innovative, for them, it is a step into the 21st century, at least.

Some of the good material online: Public Library of Science – Science Blogs – Encyclopedia of Life – The Naked Scientists – Berkeley Course Webcasts – BBC Science News – MIT OpenCourseWare (though it is very lacking in some ways at least they are trying) – TED – Mayo Clinic – Nobel Prize – SciVee

It seems to me universities with huge endowments (MIT, Harvard, Yale, Standford…), government agencies (NSF, National Academies), museums and professional societies should be doing much more to create great online content. I would increase funding in this area by 5 to 10 times what is currently being dedicated right now, and probably much more would be wise. I believe funding this would be most effective way to spend resources of those organizations on what they say they want to support.

Educating Future Scientists and Engineers

Texas in danger of losing global race

American demand for scientists and engineers is expected to grow four times faster than all other professions over the next decade, according to the U.S. Bureau of Labor Statistics. Yet today, only 5 percent of U.S. college undergraduates earn degrees in science and engineering, whereas in China, 42 percent of students do.
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Not only are highly qualified Texas science and math teachers in short supply today, but we’re losing literally thousands each year. In 2007 alone, approximately 4,000 math and science teachers left Texas classrooms, costing our state an estimated $27 million to replace them.

Fortunately, there are programs already proven successful in preventing the loss of highly qualified math and science teachers, such as UTeach, a teacher training and support program launched at The University of Texas at Austin in 1997.
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The Academy of Medicine, Engineering and Science of Texas — made up of Texas’ Nobel Laureates and National Academies members — has proposed four practical, actionable recommendations for state leaders to adopt, putting Texas on the path to world-class math and science education for our children, and a prosperous future for our state.