Science and Engineering: Innovation, Research, Education and Economics
Engineering Category
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May 9, 2008

Engineering Graduates Again in Great Shape

Once again engineering and computer science graduates are receiving the highest starting salaries. Previous posts: Lucrative college degrees (2006) - starting salaries for engineers (2005) - High Pay for Engineering Graduates 2007.

According to a survey, these are the top-paying majors for 2007-08 bachelor degree graduates:
$63,616 — Chemical engineering (up 6.5%)
$59,962 — Computer engineering
$59,873 — Computer science (up 14.7%)
$58,252 — Industrial/manufacturing engineering
$57,821 — Mechanical engineering (up 5.7%)
$57,999 — Aerospace/aeronautical/astronautical engineering

Source: Spring Survey, National Association of Colleges and Employers

Engineering Jobs Top U.S. Skills Shortage List

Engineering positions are the most difficult jobs to fill for U.S. employers, according to Manpower Inc.’s 2008 Talent Shortage Survey released April 24. Of 2,000 U.S. firms responding, 22% said they had difficulty filling positions, ranking engineers, machinists/machine operators and skilled manual trades as the top three toughest positions to fill, respectively

Grads’ job prospects weakening by degrees

In one year, the former hydraulic repairman will have a bachelor’s degree in mechanical engineering from Purdue University Calumet. And, as far as he can tell, he can write his own ticket.

“I’m finding jobs pulling at me left and right,” he said last week at a manufacturing industry job fair at the college. “The professors told us there’s such a demand, if you go to a job fair, you can walk out with a job.”

Vela, 35, happens to be in a field where demand remains strong, despite the uneven economy. Overall starting wages for mechanical engineering grads will be up 3.4 percent this year, with an average salary offer of $56,429, according to the National Association of Colleges and Employers. For many other college grads looking for a job at this time of year, the prospects are not as sweet.

Related: Career Center report high increase in demand for computer science graduates - IT Employment Hits New High Again - S&P 500 CEOs - Again Engineering Graduates Lead

Starting salaries: What the future holds (UK)
(more…)

May 7, 2008

Clifton Gorge State Nature Preserve Photos

photo of Tree at the Clifton Gorge State Nature Preserve
The Clifton Gorge State Nature Preserve in Ohio is quite a nice short hike. Photos by John Hunter. If anyone knows what the green beetle is, please add a comment.

I visited the preserve last year. Other sites from the trip include: Rocky Gap State Park, Maryland and Coopers Rock State Forest, West Virginia.

More photos: North Cascades National Park Photos - Mason Neck State Park, Virginia - travel photo directory - Olympic National Park - The Cloisters Museum and the Museum of Modern Art

photo of a green beetle
April 30, 2008

Larry Page on How to Change the World

photo of larry page
Larry Page on how to change the world

The question is, How many people are working on things that can move the needle on the economy or on people’s quality of life? Look, 40,000 people a year are killed in the U.S. in auto accidents. Who’s going to make that number zero or very, very small? There are people working on it.

In practice that’s not an issue. I’ve told the whole company repeatedly I want people to work on artificial intelligence - so we end up with five people working on it. Guess what? That’s not a major expense. There’s a reason we talk about 70/20/10, where 70% of our resources are spent in our core business and 10% end up in unrelated projects, like energy or whatever. [The other 20% goes to projects adjacent to the core business.] Actually, it’s a struggle to get it to even be 10%. People might think we’re wasting money or whatever. But that’s where all our new stuff has come from.

Solar thermal’s another area we’ve been working on; the numbers there are just astounding. In Southern California or Nevada, on a day with an average amount of sun, you can generate 800 megawatts on one square mile. And 800 megawatts is actually a lot. A nuclear plant is about 2,000 megawatts.

Whose obligation is it to make this kind of change happen? Is it Google’s? The government’s? Stanford’s? Kleiner Perkins’?

I think it’s everybody who cares about making progress in the world. Let’s say there are 10,000 people working on these things. If we make that 100,000, we’ll probably get 10 times the progress.

Posts on Google engineering: Larry Page and Sergey Brin Interview Webcast - Google Investing Huge Sums in Renewable Energy - Marissa Mayer Webcast Google Innovation - High-efficiency Power Supplies

April 29, 2008

Engineering Sports at MIT

Making sports an exact science by Shira Springer

“It’s all about finding your passion,” said Vasquez, the group leader and a Material Science and Engineering major. “All the guys on the [project] team love sports. It’s more fun than what you typically think of with an MIT research project.

“There are very few sports companies that put value in good engineering, in terms of projects that make engineering sense rather than just marketing sense. When you get to see how your research can actually be used, it’s pretty cool.”

The MIT Sports Innovation program, though, was designed to give undergraduates hands-on research experience away from textbooks and classrooms. Working in a Building 17 laboratory cluttered with experiments, where the hum of the wind tunnel can make conversation difficult, the undergraduates brainstorm and build different components of the test setup.

Inside the laboratory and Aero/Astro hangar, the MIT baseball research project looks like a combination of shop class and horror flick: Power tools, quick-drying cement, PVC pipe, handsaws, and mannequin parts are scattered around.

Related: Baseball Pitch Designed in the Lab - Randomization in Sports - The Science of the Football Swerve - Sports Engineering at MIT (2006)

April 26, 2008

Team America Rocketry Challenge

On May 17th, in The Plains, Virginia, the Team America Rocketry Challenge finals will be held. After a full day of launches, held at the Great Meadows facility, the winners will be crowned and $60,000 in scholarships will be divided up among the top finishers.

Related: Goldwater Science Scholarships - Siemens Competition in Math, Science and Technology - Student Algae Bio-fuel Project

April 18, 2008

Biodegradable Plastic Bags and Bottles

researchers look to make environmentally friendly plastics

Every year, more than 30 billion water bottles are added to America’s landfills, creating a mountainous environmental problem. But if research at Missouri University of Science and Technology is successful, the plastic bottles of the future could literally disappear within four months of being discarded.

The Missouri S&T research team is constructing new breeds of biodegradable and bioavailable plastics in an effort to reduce the tons of plastic waste that ends up in the nation’s landfills each year. Bioavailable plastics contain substances that can be absorbed by living systems during their normal physiological functions.

By combining and modifying a variety of bio-based, oil-based and natural polymers, the team seeks to create optimal blends that can be used to make agricultural films, bottles, biomedical and drug delivery devices, and more.

As polylactic acid degrades, the material reacts with water to decompose into small molecules, which are then mineralized into water and carbon dioxide.

“In general, the main end products of polymer degradation are water and carbon dioxide,” Shahlari explains. “Polylatic acid has the potential of replacing the regular water bottles, and we anticipate that our research could be incorporated into that field too.

It sure seems like they are saying these would really biodegrade. Plastic bags can photodegrade where they break down into small bits of plastic that might be hard to see but are still toxic that can be eaten by animals, and us. As one would figure - that is not a good thing. The ocean garbage floats are not huge amounts of plastic bags and bottles but instead huge amounts of small and tiny plastic particles. I know using corn based bags has been looked at previously and used.

Related: New Plastic Bags Biodegrade in Four Months - Manufacturers Push Biodegradable Plastic Bags (NPR podcast) - Crisis at Sea

April 12, 2008

Inspirational Engineer

One of the topics I care about is engineers making a real difference in the world. I lived in Singapore and Nigeria while I was growing up and traveled widely. My father was a professor of engineering (chemical, industrial), statistics and business. He was very interested in applying technology and human knowledge to help people have better lives, and I share that interest.

People like William Kamkwamba are the people that are worthy of respect. I wish the USA was more focused on people that are worthy of attention, instead of who the news media choose to show and people choose to read about. At least a few of you seem to like reading about those I do, based on the traffic this blog receives (well actually that would be a pretty poor metric, let say the attention popular science sites, magazines, podcasts, TV shows… receive).

Another video with William at TED. I posted about William previously: Make the World Better and Home Engineering: Windmill for Electricity.

Related: Appropriate Technology - posts tagged: engineers - What Kids can Learn - Water and Electricity for All

April 10, 2008

Self-assembling Nanofibers Heal Spinal Cords in Mice

Self-assembling Nanofibers Heal Spinal Cords by Prachi Patel-Predd

An engineered material that can be injected into damaged spinal cords could help prevent scars and encourage damaged nerve fibers to grow. The liquid material, developed by Northwestern University materials science professor Samuel Stupp, contains molecules that self-assemble into nanofibers, which act as a scaffold on which nerve fibers grow.

Stupp and his colleagues described in a recent paper in the Journal of Neuroscience that treatment with the material restores function to the hind legs of paralyzed mice.

The new work is the first test for the material to heal spinal cord injuries in animals. And Kessler says that it worked better than the researchers expected. The researchers stimulated a spinal cord injury in mice and injected the material 24 hours later. They found that the material reduced the size of scars and stimulated the growth of the nerve fibers through the scars. It promoted the growth of both types of nerve fibers that make up the spinal cord: motor fibers that carry signals from the brain to the limbs, and sensory fibers that carry sense signals to the brain. What is more, the material encouraged the nerve stem cells to mature into cells that create myelin–an insulating layer around nerve fibers that helps them to conduct signals more effectively.

Related: Using Bacteria to Carry Nanoparticles Into Cells - Micro-robots to ’swim’ Through Veins - Nanowired at Berkeley

April 8, 2008

$25 Million to Princeton for Engineering Education

$25 million to support innovation in engineering education

The gift builds on Princeton’s longstanding strength in educating engineers who are broadly grounded in the liberal arts and can reach beyond purely technical approaches to achieve wise and creative solutions. The new center also seeks to extend those connections by creating and supporting engineering courses that attract liberal arts students. For all students, the center emphasizes entrepreneurship, leadership and service.

“The quality of life for all societies is increasingly connected to our ability to understand, enhance and use technologies,” said Keller. “Since the rise of civilization, engineering has been integral to the development of societies and has helped people lead richer and more satisfying lives. More than ever, we must equip our graduates to be effective and innovative in deploying technology in the service of our nation and all nations.”

Currently, 60 percent of nonengineering students at Princeton take at least one engineering course; one of the center’s goals is to push that percentage to 100. Princeton’s School of Engineering and Applied Science currently offers more than 20 courses that engage students from outside the engineering school. These courses place technology in a social and historical context, emphasize entrepreneurship and provide substantial exposure to issues such as energy, the environment, cybersecurity and telecommunications. The gift will strengthen those courses and encourage the development of new ones. It also will support internships, entrepreneurial activities and a vibrant program of lectures and visiting professorships from leaders in business, government and academics.

“We see all students as engineering students,” said Sharad Malik, director of the newly named Keller Center for Innovation in Engineering Education. “Despite its pivotal role in modern life, engineering has often been perceived as an isolated discipline. I am extremely grateful to have the Kellers’ support in pushing hard in a new direction, shaping an education that spans engineering, the sciences and the humanities and connects academic learning to societal needs.”

Related: $15 Million for San Jose State College of Engineering - $25 Million for Marquette College of Engineering - $35 million to the USC School of Engineering - $75 Million for 5 New Engineering Research Centers - Art of Science at Princeton

April 7, 2008

Engineers Without Borders

Engineering as diplomacy

You cannot look into the eyes of a child who is dying from a disease caused by drinking dirty water — something that rarely, if ever, happens in the United States — and not feel changed. You cannot stand before her parents without thinking, “I’m an engineer. There must be something I can do.”

A year later, I returned with 10 engineering students from the University of Colorado. We devised a rudimentary pumping system, bringing water to the people of San Pablo. Today, the village’s young girls go to school and are healthier.

That trip was a transforming experience, not just for the villagers, but also for me. Intuitively, we engineers like things big — expansive bridges, colossal dams, massive tunnels. My experience taught me that small-scale engineering can have the most impact on people’s lives.

When I returned to Boulder, I began building something else: Engineers Without Borders — USA. The organization was formed out of the conviction that engineers have a leadership role to play in addressing some of the world’s most serious problems: contaminated water, poor sanitation systems, expensive or harmful energy sources.

In a world focused on bigger and newer, there is growing recognition that small-scale engineering can play a major role in helping end the cycle of poverty that persists among almost half the world’s population. Studies by the World Bank and United Nations suggest the most basic technology is critical to bringing more than 3 billion people out of poverty.

Today EWB-USA counts more than 11,000 student and professional engineers as members and works in 43 countries on 300 projects involving water, sanitation, energy and shelter. Whether it’s combining sustainable technologies with advanced construction techniques to bring affordable housing to pockets of the world, drilling drinking water wells in Kenya, constructing fog collectors in the Himalayas to harvest fresh water or installing solar panels to provide energy for a remote hospital in Rwanda, we are healing communities throughout the globe, giving people dignity and hope for better lives.

Engineers without Borders is another vivid example of the benefits engineering brings to society.

Related: Engineering a Better World - Scientists and Engineers Without Borders - Kick Start Appropriate Technology

April 6, 2008

More Efficient Water Heaters

GE’s New Water Heater Could Kill 30 Coal Plants

until today, Energy Star didn’t regulate water heaters at all. They’re the most energy-hungry single appliance in the home, and are responsible for about 17% of residential energy use. But because of a lack of consensus on how they should be regulated, and resistance from industry, their efficiency went completely unregulated. Well, that all changed today.

The water heater first uses a heat pump to bring the water up to the temperature of the ambient air. Then the electric water heater takes over, bringing the water up to 140 degrees F.

This new design is more than 50% more efficient than previous water heaters. If every home in America had one right now, we would need 30 fewer coal-fired power plants! Every home that installs one will see their yearly power bills drop up to $250. Because the new device uses a heat exchanger, it will actually make your furnace work harder during the winter. But in the summer, and in warm climates, it will actually help cool your house!

The new water heater will be available in 2009. A great deal of savings are available from simple actions like using compact fluorescent light bulbs, better insulation and when buying new appliances buying energy efficient appliances. Tankless water heaters, for example, are available now: Bosch AquaStar Natural Gas Tankless Water Heater.

Related: Wind-Powered Water Heater - Unglamorous Electricity Savings - The Magnetic Fridge - Engineers Save Energy - posts on decreasing our impact on the environment

April 5, 2008

False Teeth For Cats

False Teeth For Cats! What Next?

A team of eight British college students, calling themselves Fangs A Lot, have created the first false tooth for a cat and set up a business, Animal Solutions, to market false teeth for cats, dogs, and other animals. The group and its prototype false cat tooth have made it to the finals of the Ideas Igloo Roadshow, an invention contest for college students sponsored by Britain’s Make Your Mark Campaign and Microsoft, UK.

False teeth for cats may sound ridiculous, but they could be a solution to a serious problem for cats. Cats have notoriously bad dental problems. Cat owners seldom brush their cats’ teeth or scrape the surfaces of the teeth to remove plaque. By the time a cat is 3 or 4 years old, she may already have periodontal disease that can lead to tooth loss. Tooth loss may also come about as a result of tooth breakage, particularly in the canine teeth.

Link provided via our post suggestion page.

Related: Engineering Students Design Innovative Hand Dryer - UK Young Engineers Competitions - La Vida Robot - Eco-Vehicle Student Competition - Genetically Engineered Machines Competition

April 3, 2008

‘Refrigerator’ Without Electricity

photo of pot in pot

2000 Rolex award to Mohammed Bah Abba of Nigeria for the Pot in Pot Cooling System:

Ingenious technique that requires no external energy supply to preserve fruit, vegetables and other perishables in hot, arid climates. The pot-in-pot cooling system, a kind of “desert refrigerator”, helps subsistence farmers by reducing food spoilage and waste and thus increasing their income and limiting the health hazards of decaying foods. Abba says he developed the pot-in-pot “to help the rural poor in a cost-effective, participatory and sustainable way”.

The pot-in-pot consists of two earthenware pots of different diameters, one placed inside the other. The space between the two pots is filled with wet sand that is kept constantly moist, thereby keeping both pots damp. Fruit, vegetables and other items such as soft drinks are put in the smaller inner pot, which is covered with a damp cloth. The phenomenon that occurs is based on a simple principle of physics: the water contained in the sand between the two pots evaporates towards the outer surface of the larger pot where the drier outside air is circulating. By virtue of the laws of thermodynamics, the evaporation process automatically causes a drop in temperature of several degrees, cooling the inner container, destroying harmful micro-organisms and preserving the perishable foods inside.

He also received the 2001 Shell Award for Sustainable Development. Great stuff:

Born in 1964 into a family of pot makers and raised in the rural north, Mohammed Bah Abba was familiar from an early age with the various practical and symbolic uses of traditional clay pots, and learned as a child the rudiments of pottery. Subsequently studying biology, chemistry and geology at school, he unravelled the technical puzzle that led him years later to develop the “pot-in-pot preservation/cooling system”.

Related: Appropriate Technology (Kick Start) - appropriate technology tagged posts - Smokeless Stove Uses 80% Less Fuel - Water and Electricity for All - The Importance of Science Education - Engineering a Better World

March 31, 2008

Babbage Difference Engine In Lego

Building A Calculating Machine Using Lego Pieces by Andrew Carol

Before the day of computers and pocket calculators all mathematics was done by hand. Great effort was expended to compose trigonometric and logarithmic tables for navigation, scientific investigation, and engineering purposes. The larger efforts involved rooms of semi skilled people, called ‘computers’, capable of doing reliable arithmetic who would be under the direction of a skilled mathematician.

In the mid-19th century, people began to design machines to automate this error prone process. Many machines of various designs were eventually built but, the most advanced and famous of these was not. The Babbage Difference Engine.

Because of engineering issues as well as political and personal conflict the Babbage Difference engines construction had to wait until 1991 when the Science Museum in London decided to build the Babbage Difference Engine No.2 for an exhibit on the history of computers.

Babbage’s design could evaluate 7th order polynomials to 31 digits of accuracy. I set out to build a working Difference Engine using standard LEGO parts which could compute 2nd or 3rd order polynomials to 3 or 4 digits. I have built two generations of Difference Engines and am designing the third version now.

Related: Rubick’s Cube Solving Lego Mindstorms Robot - Lego Autopilot Project Update - Open Source for LEGO Mindstorms - Donald Knuth, Computer Scientist

March 28, 2008

Squid Materials Engineering

Scientists find that squid beak is both hard and soft

The sharp beak of the Humboldt squid is one of the hardest and stiffest organic materials known. Engineers, biologists, and marine scientists at the University of California, Santa Barbara, have joined forces to discover how the soft, gelatinous squid can operate its knife-like beak without tearing itself to pieces.

The key to the squid beak lies in the gradations of stiffness. The tip is extremely stiff, yet the base is 100 times more compliant, allowing it to blend with surrounding tissue. However, this only works when the base of the beak is wet. After it dries out, the base becomes similarly stiff as the already desiccated beak tip.

“You can imagine the problems you’d encounter if you attached a knife blade to a block of Jell-o and tried to use that blade for cutting. The blade would cut through the Jell-o at least as much as the targeted object. In the case of the squid beak, nature takes care of the problem by changing the beak composition progressively, rather than abruptly, so that its tip can pierce prey without harming the squid in the process. It’s a truly fascinating design!”

“If we could reproduce the property gradients that we find in squid beak, it would open new possibilities for joining materials,” explained Zok. “For example, if you graded an adhesive to make its properties match one material on one side and the other material on the other side, you could potentially form a much more robust bond,” he said. “This could really revolutionize the way engineers think about attaching materials together.”

Related: Deep-Sea Giant Squid - Self Healing Plastic - Sea Slug Photo Gallery

March 26, 2008

Jobs Increasing for German Engineers

Growth in jobs rises for German engineers

Employment in Germany’s engineering industry is expanding at its fastest rate in 40 years, highlighting the strength of Europe’s largest economy as global financial storms intensify.

Jobs in the sector – the backbone of Germany’s manufacturing industry – rose by 27,000 in January, the highest monthly increase since the 1960s, according to figures published on Tuesday by Gesamtmetall, the engineering employers’ federation. Some companies reported losing production because they could not fill vacancies quickly enough.

He said that about one in eight of the approximately 6,100 engineering companies were having difficulties in recruiting qualified engineers and mechanics, with this in some cases leading to production cutbacks. “Many companies misjudged how quickly the economy would recover and therefore failed to take on sufficient trainees,” Mr Vajna said. There also remained a shortage of engineering graduates, he added.

Related: Germany’s Science Chancellor - Top 10 Manufacturing Countries 2006 - Best Research University Rankings (2007) - Country H-index Rank for Science Publications

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