Friday 17 July 2009

Indian boffin creates camera with invisible flash that takes pics sans the glare
London: An Indian researcher along with a colleague has developed a camera that takes photos with an invisible flash of infrared and ultraviolet light points to a smarter way to take photos in the dark.
Dilip Krishnan and Rob Fergus at New York University made the camera to do away with intrusive regular flashes.
In order to make their 'dark flash' camera, the researchers modified a flashbulb to emit light over a wider range of frequencies and filter out visible light.
They also had to remove the filters which usually prevent a camera's silicon image sensor detecting IR and UV rays, reports New Scientist.
Krishnan and Fergus used colour information from a brief, flash-free photograph of the same scene taken quickly after the dark flash image to give the pictures more normal hues.
Krishnan and Fergus will present their work at the Siggraph conference in New Orleans in August.

Saturday 13 June 2009

New mechanism may double a planet's lifespan
Washington : A team of scientists from the California Institute of Technology (Caltech) has come up with a mechanism that doubles the future lifespan of the biosphere of a planet, while also increasing the chance that advanced life will be found elsewhere in the universe.
As the sun has matured over the
past 4.5 billion years, it has become both brighter and hotter, increasing the amount of solar radiation received by Earth, along with surface temperatures.
Earth has coped by reducing the amount of carbon dioxide in the atmosphere, thus reducing the warming effect.
According to Joseph L. Kirschvink, the Nico and Marilyn Van Wingen Professor of Geobiology at Caltech, the problem is that “we’re nearing the point where there’s not enough carbon dioxide left to regulate temperatures following the same procedures.”
Kirschvink and his collaborators Yuk L. Yung, a Caltech professor of planetary science, and graduate students King-Fai Li and Kaveh Pahlevan, say that the solution is to reduce substantially the total pressure of the atmosphere itself, by removing massive amounts of molecular nitrogen, the largely nonreactive gas that makes up about 78 percent of the atmosphere.
This would regulate the surface temperatures and allow carbon dioxide to remain in the atmosphere, to support life, and could tack an additional 1.3 billion years onto Earth’s expected lifespan.
Increasing the lifespan of our biosphere, from roughly 1 billion to 2.3 billion years, has intriguing implications for the search for life elsewhere in the universe.
The length of the existence of advanced life is a variable in the Drake equation, astronomer Frank Drake’s famous formula for estimating the number of intelligent extraterrestrial civilizations in the galaxy.
Doubling the duration of Earth’s biosphere effectively doubles the odds that intelligent life will be found elsewhere in the galaxy.
“It didn’t take very long to produce life on the planet, but it takes a very long time to develop advanced life,” said Yung.
On Earth, this process took four billion years.
“Adding an additional billion years gives us more time to develop, and more time to encounter advanced civilizations, whose own existence might be prolonged by this mechanism. It gives us a chance to meet,” said Yung.

Saturday 30 May 2009

Sperm-like nano-devices may revolutionise drug delivery inside the body
London: A team of scientists, including an Indian-origin researcher, are working on remote-controlled nano-devices that look like sperm that may one day deliver drugs to where they are needed in the body.
Peer Fischer of The Rowland Institute at Harvard University has revealed that the nanopropellers will mimic the corkscrew motion of flagella, the structures some bacteria use to swim through water.
He and his colleague Ambarish Ghosh have revealed that their nanopropellers are made of glass.
The researchers further revealed that each of them has a spherical head 200 to 300 nanometres across and a corkscrew-shaped tail 1 to 2 micrometres long - less than one-tenth the length of a human sperm.
Ghosh and Fischer covered a silicon wafer with glass beads to make these propellers, before depositing a vapour of silicon dioxide onto them.
While doing so they spun the wafer, causing the silicon dioxide to form corkscrew-shaped tails on each bead. Finally, once the silicon dioxide had solidified they covered one side of the nanopropellers with cobalt.
Ghosh and Fischer say that the nanopropellers can be steered precisely.
"We control the coils that give rise to the magnetic field. By changing the magnetic field in three dimensions we can steer and propel the propellers," New Scientist quoted Fischer as saying.
The team have shown that a nanopropeller can push a silica bead over 1000 times larger than itself. They believe that their work may revolutionise drug delivery to specific areas of the body via the bloodstream, or even to conduct surgery.

Monday 4 May 2009

'Smart turbine blades' to improve wind power
Washington: In a new research, scientists have developed a technique that uses sensors and computational software to constantly monitor forces exerted
on wind turbine blades, a step towardimproving efficiency by adjusting for rapidly changing wind conditions.
The research, by engineers at Purdue University and Sandia National Laboratories, is part of an effort to develop a smarter wind turbine structure
"The ultimate goal is to feed information from sensors into an active control system that precisely adjusts components to optimize efficiency," said Purdue doctoral student Jonathan White, who is leading the research with Douglas Adams, a professor of mechanical engineering
and director of Purdue's Center for Systems Integrity.
The system also could help improve wind turbine reliability by providing critical real-time information to the control system to prevent catastrophic wind turbine damage from high winds.
The engineers embedded sensors called uniaxial and triaxial accelerometers inside a wind turbine blade as the blade was being built.
The blade is now being tested on a research wind turbine at the US Department of Agriculture's Agriculture Research Service laboratory in Bushland, Texas.
Such sensors could be instrumental in future turbine blades that have "control surfaces" and simple flaps like those on an airplane's wings to change the aerodynamic characteristics of the blades for better control.
Because these flaps would be changed in real time to respond to changing winds, constant sensor data would be critical.
Research findings show that using a trio of sensors and "estimator model" software developed by White accurately reveals how much force is being exerted on the blades.
"You want to be able to control the generator or the pitch of the blades to optimize energy capture by reducing forces on the components in the wind turbine during excessively high winds and increase the loads during low winds. In addition to improving efficiency, this should help improve reliability," said Adams.
"We envision smart systems being a potentially huge step forward for turbines," said Sandia's Rumsey.
"There is still a lot of work to be done, but we believe the payoff will be great. Our goal is to provide the electric utility industry with a reliable and efficient product. We are laying the groundwork for the wind turbine of the future," he added.
Purdue and Sandia have applied for a provisional patent on the technique.

Thursday 23 April 2009

Biofuel crops can become invasive pests in tropical areas
Washington: In a new research, scientists have concluded that biofuel crops proposed for use in the Hawaiian Islands are two to four times more likely to become invasive pests in Hawaii and other tropical areas when compared to a random sample of other introduced plants.
The research was done by scientists with the
University of Hawaii Pacific Cooperative Studies Unit, who examined the impact of unregulated planting of biofuel crops for their potential invasiveness and raised concerns about their impacts on Hawaii's environment.
Recent spikes in energy costs and political instability in many oil-rich regions of the world are driving a search for homegrown alternatives to traditional fossil fuels, such as coal, oil and natural gas.
Biofuel crops are often touted as a 'green' solution to U.S. dependence on foreign oil and have been promoted for stimulus package 'green jobs'.
Despite the potential benefits, researchers say biofuel crops actually might be aggressive invasive plants grown under the guise of beneficial crops.
The researchers used a weed risk assessment that examines a plant's biology, geographic origin, pest status elsewhere, and published information on its behavior in Hawaii to identify plants with a high risk of becoming invasive pests in Hawaii or other Pacific islands.
Despite these findings, researchers say some high risk biofuel crops could be grown if measures are implemented that reduce their risk of spreading out of control and causing unintended problems.
According to Christopher Buddenhagen, co-author of the study, 'By identifying the species with the highest risk, and pushing for planting guidelines and precautionary measures prior to widespread planting, we hope to spare the Hawaiian Islands and similar tropical ecosystems from future economic and environmental costs of the worst invaders while encouraging and promoting the use of lower risk alternative crops.'

Sunday 22 March 2009

Higher Performance Electrical and Optical Integrated Circuits come closer to Reality
Washington: Scientists at the University of Illinois have moved a step closer to realising higher speed electronics and higher performance electrical and optical integrated circuits, for they have successfully created a microwave signal mixer made from a tunnel-junction transistor laser.
The researchers have revealed that their mixing device accepts two electrical inputs, and produces an optical signal that was measured at frequencies of up to 22.7 gigahertz.
They say that the frequency range was limited by the bandwidth of the detector employed in the measurements, not by the transistor device.
"In addition to the usual current-modulation capability, the tunnel junction provides an enhanced means for voltage-controlled modulation of the photon output of the transistor laser. This offers new capabilities and a much greater sensitivity for unique signal-mixing and signal-processing applications," said Nick Holonyak Jr., a John Bardeen Chair Professor of Electrical and Computer Engineering and Physics.
For making the device, the research team placed a quantum well inside the base region of a transistor laser, and then created a tunnel junction within the collector region.
"Within the transistor laser, the tunnelling process occurs predominantly through a process called photon-assisted absorption," said Milton Feng, the Holonyak Chair Professor of Electrical and Computer Engineering.
According to Feng, the tunnelling process begins in the quantum well, where electrons and holes combine and generate photons, which are then reabsorbed to create new pairs of electrons and holes used for voltage modulation.
"The tunnel junction makes it possible to annihilate an electron in the quantum well, and then tunnel an electron out to the collector by the tunnel contact," Feng said.
The transistor output is sensitive to third-terminal voltage control because of the electrons tunneling from the base to the collector, which also creates an efficient supply of holes to the quantum well for recombination.
"We are using the photon internally to modify the electrical operation and make the transistor itself a different device with additional properties," said Holonyak, who also is a professor in the university's Center for Advanced Study, one of the highest forms of campus recognition.
According to the researchers, high-speed signal mixing is made possible by the nonlinear coupling of the internal optical field to the base electron-hole recombination, minority carrier emitter-to-collector transport, and the base-to-collector electron tunneling at the collector junction.
The sensitivity of the tunnel-junction transistor laser to voltage control enables the device to be directly modulated by both current and voltage.
The researchers say that this flexibility facilitates the design of new non-linear signal processing devices for improved optical power output.
"The metamorphosis of the transistor is not yet complete. We're still working on it, and the transistor is still changing," Holonyak said.
The fabrication and operation of the mixing device has been described in the journal Applied Physics Letters.

Saturday 14 March 2009

85,500 Solar Jobs Possible in Florida:
By Susan Salisbury
Harnessing solar energy in the Sunshine State has always seemed to make a lot of sense. Well, now a grass-roots group wants to put that to the test.
The San Francisco-based The Vote Solar Initiative, focused on advancing solar energy development in t
he U.S., estimates that 85,500 jobs -- from construction to engineering to marketing -- could be created if Florida adopts a proposed requirement that 20 percent of the state's electricity comes from renewable sources by 2020.
By May, the Florida Legislature is expected to consider the 20 percent renewable standard recommended by the Florida Public Service Commission. Now, about 2 percent of the state's energy comes from renewable sources.
Gwen Rose, deputy director of The Vote Solar Initiative, said the jobs estimate comes from a study by Navigant Consulting that showed more than 3,800 megawatts of solar power could be generated if the state goes to the 20 percent standard. According to Navigant, with each megawatt yielding 15 to 30 direct jobs, that translates into 57,000 to 114,000 direct jobs -- 85,500 is the mid-range.
Today, Vote Solar placed a job listing in the Classifieds section of newspapers around the state, including The Palm Beach Post, stating: "HELP WANTED: 85,000 electricians, engineers, sales to staff the new solar energy economy. Apply at Legislature. Ask for strong solar energy policies." "The nice thing about solar is that it is flexible, modular and quick to market," Rose said. "You get projects in on the ground really fast. If the renewable portfolio standard passes and the rules are in place, you could see development really accelerate by 2010." She said solar is flexible because solar power plants can be large enough to power a community, or small enough to be installed on the rooftops of a house.
Indeed, several South Florida companies are finding a market in rooftop photovoltaic power systems, as well as the more typical solar hot water and pool heaters.
Yann Brandt, vice president of Advanced Green Technologies in Fort Lauderdale, said a typical residential solar power system costs from $30,000 to $40,000 to install, but that the homeowner receives $25,000 to $30,000 in federal tax incentives and state rebates. Among the company's projects were 26-kilowatt systems at the Publix Super Markets Greenwise stores in Boca Raton and Palm Beach Gardens.
"Solar is the infrastructure project of the 21st century. ... It offers us the most shovel-ready projects of all," Brandt said. "We have the roof space and solar is readily available." Brian Betron agreed. The solar energy consultant for Jupiter-based Abundant Energy said the company recently installed the town's first photovoltaic system.
For Jupiter homeowners Brian and Emily O'Mahoney, having the system installed about a month ago was all about being green. Emily O'Mahoney, a landscape architect, is LEED certified.
"We calculated it for a size where it should offset our electrical usage completely," Brian O'Mahoney said. "I don't actually believe that will happen. (But) it will definitely save us quite a bit." Betron agrees that the solar industry would be boosted if the state adopted the 20 percent standard.
"There is so much potential here in the state of Florida," he said "For just the residential facilities, or homes, only half of 1 percent have any type of solar installed."

Saturday 7 March 2009

FOCUS ON GLOBALIZATIONA Shift in Engineering Offshoring
The transfer of R&D resources to low-wave countries may portend major changes for engineers in developed nations.
By Alan S. Brown
Companies have been offshoring manufacturing for decades. Today, however, corporations are sending engineering work abroad as well, by outsourcing work to offshore vendors or assigning it to overseas divisions.
If this is a seismic change in the engineering profession, so far mechanical engineers have only felt the initial tremors. The trend is most pronounced in information technology, computing, and consumer electronics, where U.S., European, and Japanese firms have hired hundreds of thousands of programmers and engineers in China, India, and other developing nations. Computer and cellphone manufacturers increasingly outsource product design and engineering to original design manufacturers in China and Taiwan.
Many IT organizations not only outsource projects overseas, but rely on a small army of contract workers from overseas (on H1-B visas) to staff U.S. offices. Some companies require domestic IT employees to train their replacements (who will return overseas with their jobs) in order to retain severance benefits. A recent survey of 10,000 workers by the Stern and Wharton business schools found 8 percent of IT workers fired or involuntarily transferred due to offshoring.
Similar practices are not as common in mechanical engineering. Yet the trends are moving in the same direction. Companies like Caterpillar, Daimler, General Electric, General Motors, Honeywell, Siemens, Matsushita Electric, and IBM have all built massive engineering facilities offshore. Many companies also outsource engineering to offshore vendors.
[Photo: Manufacturing profits helped build Shanghai's skyline. Studies show companies that offshore manufacturing tend to offshore engineering too].
Corporations justify offshoring easily. They need local engineers to enter developing markets. They claim they cannot find enough skilled engineers at home. They want to speed up product introductions. They believe offshoring cuts costs.
There are other reasons too, some rarely enunciated. Many CEOs of public companies feel pressure from Wall Street analysts to show cost-cutting offshoring strategies. China demands technology transfer in exchange for access to its markets. Engineering must follow manufacturing abroad to achieve real efficiencies. Managers can hire four or five engineers overseas for the cost of one at home.
Offshoring is reaching critical mass in many engineering fields. Offshore engineers are bright, highly motivated, and have climbed the skill ladder rapidly. Engineering centers founded to create 3-D CAD files and adapt products for local markets are now tackling more complex projects as well as true research. Increasingly, large corporations see overseas divisions as new centers of excellence, and offshore vendors as low-cost sources of design and engineering.
This may sound familiar. After all, multinationals increasingly promote talented individuals from all over the world. Many have outsourced engineering projects for decades.
Yet many researchers believe offshoring today differs from past practices in one very important way: Many multinationals are making massive investments overseas at the expense of investments at home. This massive transfer of knowledge and capabilities overseas is depleting engineering capacity in developed nations.
This raises fundamental questions: Are multinationals transferring too much technology to potential competitors? Will fledgling engineers in developed countries become leaders if the jobs where they learn technical leadership skills are offshore? Can multinationals remain close to customersСand control project design and specificationСif they outsource vital engineering capabilities?
Multinational companies often answer questions like these by affirming that offshoring enables them to reduce costs to consumers, increase market share, and use profits to create more high-paying jobs. They are, after all, not citizens of one country, but of many countries, and their job is to maximize shareholder value.
ELUSIVE NUMBERS

European and Japanese engineers tend to have more job protection than American engineers, and U.S. corporations are believed to be in the forefront of offshoring. But there is little hard data on engineering. In 2005, the National Academy of Engineering asked Timothy Sturgeon, a research Fellow at MIT’s Industrial Performance Center, to assess data on offshoring.
“I documented something everyone already knew. There isn’t any data on any of this stuff,” he said. “I was shocked to find how big the holes were. The U.S. Bureau of Economic Analysis collects data on 16,000 product categories versus 17 service categories. I can find a synthetic thread twisted left, but all engineering is lumped under ‘Business, professional, and technical services.’”
Lori Kletzer, an economist at University of California, Santa Cruz, agrees. “It’s almost to the point of being ridiculous,” Kletzer said. “We’ve been a service economy for a long time, but we’re still focused on things that cross a border and require a customs form.”
In a recent study, two Rand Corp. researchers, James Hosek and Titus Galama, argued that the United States still leads the world in science and technology, accounting for 40 percent of global R&D spending. Compared with other industrialized nations, it filed 38 percent of all new patents, employed 37 percent of all researchers, and wrote 63 percent of the most highly cited research papers.
Yet Hosek and Galama cannot determine where U.S. corporations spend their R&D dollars, which amount to two-thirds of all U.S. R&D funding.
[Photo: Taiwan manufactures 90 percent of the world's laptop computers and does an increasing amount of design and engineering].
Often, information comes in illuminating bursts. A recent National Academy of Engineering report noted that employment and exports of Indian software services firms grew 30 to 40 percent annually over the past decade. And 18 of the top 20 U.S. semiconductor companies have built design centers in India, half since 2004.
Ron Hira, an assistant professor of public policy at Rochester Institute of Technology, notes that IBM’s Indian operations grew to 73,000 employees by the end of 2007, from 9,000 in 2003. IBM expects to reach 100,000 workers, mostly technical, by 2010. “That rivals the roughly 120,000 people IBM employs in the U.S.,” he noted.
Hira points to a 2007 survey of 248 American and European R&D managers undertaken for the National Academies’ Government University Industry Research Roundtable. The managers expected R&D employment to grow in India and China. More thought it would decline than grow in the United States. Most managers said they planned to keep emerging technologies at home while offshoring familiar science.
To understand offshoring better, Leonard Lynn, a professor of management policy at Case Western Reserve University, and Hal Salzman of the Urban Institute, a Washington think tank, turned detective. They interviewed more than 200 engineers and managers at 41 multinational companies and eight smaller firms at 67 sites in 14 countries. They covered 23 electrical or electronics sites, 20 auto or aerospace facilities, 19 information technology offices, and five medical or pharmaceutical centers.
“Based on our case studies, we are concerned about U.S. firms taking their market leadership for granted while undercutting their engineering infrastructure,” Lynn said.
Lynn is skeptical of many offshoring practices and assumptions. He said that, in once case, a multinational company’s division specializing in large administrative software systems announced plans to develop new software. When financial analysts criticized it for not having a cost-cutting offshoring strategy, senior management decided to outsource a percentage of the business. “It was not so much a strategy as a quota,” Lynn said.
The company, which Lynn calls ALL-IT to protect its identity, began outsourcing more of the project while downsizing U.S. staff. It had planned to keep core development in the United States. Yet as technical hurdles arose, the company no longer had the U.S. programmers to tackle them. It had to send more work overseas. By 2006, the company’s U.S. programmers were maintaining legacy systems while its Indian center was creating next-generation software.
The company, a systems integrator, remained close to its customers. Yet it often brought in staff from Indian contractors to help solve customer problems. “It was becoming apparent to customers where the real expertise lies,” Lynn said. ALL-IT’s managers told Lynn that they learned systems integration by moving up the ranks, but those jobs were being outsourced.
According to Lynn, “If you neglect the infrastructure back home, you lose capabilities. If you don’t have managers who worked their way through the entire system, then offshore engineers have to take over more leadership roles.”
Lynn and Salzman also studied a heavy electrical equipment manufacturer and a power systems company, which did a better job of safeguarding core technology. Both companies tapped Chinese or Indian nationals in top engineering management to lead their ventures overseas. The facilities started with limited agendas, like supporting a local factory or doing enough research to justify Chinese government contracts. Over time, though, their performance and the relationship of their managers with executives at home enabled them to expand their operations.
VALUE CHAINS
For many companies, offshoring engineering is an extension of outsourcing, a business model that calls for companies to concentrate on core businesses and contract peripheral projects to vendors. Companies that have prospered under this model often control the point where value is added to a product, often through engineering.
Take, for example, Apple. Its ability to develop proprietary technologies makes it a winner, said Kenneth Kraemer, the former director of the Center for Research on Information Technology and Organizations at the University of California, Irvine. He estimates that Apple captures approximately 30 to 35 percent of the value of each iPod it sells. Its U.S. and Japanese vendors, which supply high-tech components, receive most of the rest. China, which assembles the iPod, earns less than 5 percent.
Kraemer estimates that the iPod created 40,000 jobs. Only 12,000 to 14,000 jobs are in the United States, roughly half in engineering or management. Yet U.S. workers earn 2.5 times more than non-U.S. workers. “In Asia, the jobs are mostly very low cost labor, with relatively few engineering and management positions,” Kraemer said.
Even in a commodity business like PCs, some companies have proprietary advantages. Intel, which makes processors, and Microsoft, which develops operating systems, profit more than the PC makers themselves, Kraemer said.
Hewlett-Packard and Dell have dominated the notebook computer market by leveraging the value chain, MIT’s Sturgeon added. This is true even though Taiwanese companies make more than 90 percent of the world’s notebooks and do an increasing amount of design and detailed engineering. “One Taiwanese executive once told me that no foreign PC maker ever kept its market share in the United States,” said Sturgeon.
This is because Dell and HP are strong marketers and use their position atop the value chain to cut costs aggressively. In notebooks, Sturgeon said, Microsoft and Intel standards determine most of the functionality. “That makes capabilities generic and parts substitutable, so HP and Dell can play one component manufacturer off against the other,” he explained.
Automakers tried to do the same thing, but with less success. Each automotive subsystem requires extensive customization. “This makes it very difficult for automakers to specify what they want suppliers to do,” Sturgeon explained. “They have to trade tacitСuncodified, mushy, analogСinformation. They sit around conference tables, look at drawings, and there’s lots of trial and error. It raises the transaction cost.
“You need a special relationship with your suppliers to make this work. The Japanese are comfortable with these long-term, trust-based relationships. But U.S. automakers wanted a market relationship, and this leads to dysfunctional interactions. Since 1992, 37 Tier 1 and 2 suppliers have gone bankrupt, and not one of them was Japanese.”
Despite the need for hands-on engineering at home, automotive work continues to surge offshore. Technology centers support manufacturing operations in China and do R&D in India. General Motors, for example, hired 400 researchers in Bangalore within two and a half years. “If you look at their Internet job postings, they are certainly doing sophisticated research. It’s not for the Indian market, but for global markets and the United States,” said Martin Kenney, a professor of Human and Community Development at the University of California, Davis.
In 2005, an Indian multinational, Tata Group, acquired Incat International plc, an engineering contractor headquartered in Novi, Mich., and London, U.K. Tata, a major manufacturer and IT services supplier, has Incat’s experienced engineers interact with automakers at their facilities and coordinate the flow of engineering work to India.
“Some people tried the offshoring model and found they couldn’t make it work,” said Incat’s head of worldwide delivery, Kevin Fisher. “We can help an OEM with specific parts, like closures or trim, or go from design release to digital manufacturing.” He said Incat is close to signing a large engineering contract with a major automaker.
BUMPS ON THE ROAD
Even as multinationals send engineering abroad, some researchers question some of offshoring’s fundamental assumptions. “You would assume that big companies with smart people running them would do a cost-benefit analysis of offshoring,” Lynn said. “It was not always that sophisticated. They would say, ‘An engineer in India costs one-fifth as much as an engineer here, so the more engineers, the more benefit.’ ”
Lynn said, however, that he talked with two IT firms that estimated that it took five offshore workers to do the work of three U.S. employees. Offshoring also carried additional overhead, such as rework due to misunderstandings, additional management for coordination, and the cost of travel (up to $10,000 or more per person per trip).
“One engineering manager at a household products company told me that when they sent a team to China or reworked a project, they assigned the cost to U.S. operations,” Lynn said. “That made U.S. costs look higher and offshore costs lower.” Managers in other companies told similar tales.
Another company was surprised to find its Indian contractor rotating personnel so more employees could gain experience by working for a multinational client. “The U.S. engineers would fly to India, get to know someone, and the quality of work would go up,” Lynn said. “Then the contractor would rotate personnel and they’d have to make another trip. They were spending their money to train their contractor.”
Kenney notes that until the recession, rapid inflation of Indian IT salaries actually caused many European firms to relocate services in Eastern Europe because costs were similar and the location closer. Lynn believes the true cost advantage of offshoring is more like 15 percent rather than the 50 or 80 percent often claimed.
Yet Lynn readily admits that high costs may be short-term issues of an immature business model. As companies gain experience, offshoring costs may fall. For companies that spend tens or hundreds of millions on R&D, the savings are too tantalizing to ignore.
Besides, developing nations have remade themselves before our eyes. China and India graduate armies of engineers. While quality varies, thousands are smart, hard working, and capable. “If you’re paying an engineer $700 per month, you can afford to train him for nine months. After two or three years, he’ll be equally productive as American workers,” said Vivek Wadhwa, an entrepreneur who is currently executive in residence at Duke University.
Wadhwa also said that Indian IT firms have developed effective corporate training programs. “The IT education you get out of Infosys is better than most of our top universities,” he remarked. Meanwhile, U.S. and European universities are rapidly setting up overseas branches to educate students in science, engineering, and medicine.'
'UNSTOPPABLE NOW’
The shift towards offshore engineering is clear in IT, PCs, and telecommunications. Other industries are being pulled offshore to support new factories, adapt products to local markets, and to seek cost advantages. “Globalization is unstoppable now, no matter how much we moan and groan,” Wadhwa said.
Kraemer agreed. He surveyed 400 companies and sees manufacturing pulling engineering offshore. “The more a company outsourced manufacturing, the more it outsourced the physical design and development of its products,” Kraemer said. His analysis finds that this benefits companies, their industries, and their products. But Kraemer added a note of caution: “In the long run, the real research will probably stay here, but everything else is on the table.”
What will happen next? Will multinationals continue to shift engineering to low-cost nations, or will they reach an equilibrium point? Will smaller companies, typically hotbeds of innovation, feel they must also move engineering offshore to keep up, or will they continue to innovate at home? Will engineering’s center of gravity shift to developing nations?
Ralph Gomory, a former vice president of R&D at IBM and past president of the Alfred P. Sloan Foundation, which supports research about science and society, thinks the interests of corporations and their countries have diverged.
“I’ve sat on corporate boards, and every board member believes it is his or her duty to maximize value for shareholders,” he said. “If offshoring is good for profits, then it is their dutyСand they use that wordСto take those jobs to other countries.”
[Photo: Bangalore, India, has become a global offshoring destination, graduating from fixing Y2K software bugs and converting 2D drawings into 3D CAD files to doing advanced software design and engineering research and development].
The United States, unlike China, Korea, Japan, or many European countries, makes few demands on its corporate citizens, Gomory said. This has enabled U.S. corporations to shift investments overseas. They have grown richer, but are they leaving the nation poorer?
Classical economists defend offshoring by calling on a centuries-old principle called comparative advantage. It states that countries are better off when they trade without restrictions, so each trading partner can specialize in what it does best rather than try to hang onto floundering industries. Eventually, trade settles into an equilibrium that benefits both partners.
In today’s globalized world, that equilibrium changes constantly. “Comparative advantage tells you nothing about whether today’s equilibrium is better than yesterday’s. Today, we’re consuming more value than we create. We’re not balancing our trade gap. Like a rich family that doesn’t work, we’re living off our inheritance,” Gomory said.
No one can predict how the current recession will affect the global model. According to Hira at RIT, “Companies have built up huge engineering capacities overseas. Now, with the recession, there’s overcapacity. So which part of your capacity do you lop off? The high-cost legacy capacity or the part that you just built?”
Hira’s prediction: “These firms will announce large layoffs and blame it on the recession. But the cuts will be unevenly distributed, so what looks like a layoff is really a geographic redistribution of a firm’s workforce.”
The landscape is clearly changing, but the future is far from clear. The United States, for instance, retains substantial engineering strengths. It remains the leader in R&D investment, sophisticated research, and engineering education. Its engineers remain capable, creative, and highly productive. Its students learn critical skills—teamwork, communications, business sense—that can give them an edge in a global economy.
As the economy improves, perhaps Indian and Chinese engineering salaries will soar once again, until costs reach a rough equilibrium. Perhaps multinationals will then assign R&D tasks based on capabilities rather than cost. Or they may pursue even lower-cost engineers, the way they relocated factories to seek cheaper labor. Perhaps innovation will move to other parts of the world. Perhaps it will simply diffuse across national borders, growing everywhere as the global economy expands.
Whatever happens, the world is definitely changing, and the engineering profession with it.

Thursday 5 March 2009

How Many Dimensions In The Holographic Universe?
Viennese scientists are trying to understand the mysteries of the holographic principle: How many dimensions are there in our universe?
Some of the world's brightest minds are carrying out research in this area -- and still have not succeeded so far in creating a unified theory of quantum gravitation is often considered to be the “Holy Grail” of modern science.
Daniel Grumiller from the Institute of Theoretical Physics, Vienna University of Technology, can now at least unravel some of the mysteries of quantum gravitation. His results on black holes and gravitational waves are pretty mind-boggling - to say the least. Only recently he won the START prize and will use these funds to engage even more young physicists at the TU Vienna.
We perceive the space around us as three-dimensional. According to Einstein, time and space are inseparabely linked. Adding the time axis to our three-dimensional space makes our space-time-continuum four-dimensional. For decades, scientists have been wondering about the existence of additional dimensions so far hidden to our senses. Grumiller and his colleagues are trying the opposite approach: Instead of postulating additional dimensions, they believe that our universe could in fact be described by less than four dimensions.
“A hologram, as you find it on bank notes or credit cards, appears to show a three-dimensional picture, even though in fact it is just two-dimensional,” Grumiller explains. In such a case, reality has fewer dimensions than we would thinkit appears to have. This “holographic principle” plays an important role in the physics of space time. Instead of creating a theory of gravity in all the time and space dimensions, one can formulate a new quantum theory with one fewer spatial dimension. That way, a 3D theory of gravitation turns into a 2D quantum theory, in which gravity does not appear any more. Still, this quantum theory correctly predicts phenomena like black holes or gravitational waves.
“The question, how many dimensions our world really has, does probably not even have a proper answerprobably cannot be answered explicitly,” Grumiller thinks. “Depending on the particular question we are trying to answer, either one of the approaches may turn out to be more useful.”
Grumiller is currently working on gravitational theories which include two spatial dimensions and one time dimension. They can be mapped onto a two-dimensional gravitationless quantum theory. Such theories can be used to describe rapidly rotating black holes or “cosmic strings” – spacetime defects, which probably appeared shortly after the Big Bang.
Together with colleagues from the University of Vienna, Grumiller is organizing an international workshop, which will take place from April 14 to 24, 2009. Renowned participants, like scientists from Harvard, Princeton, the MIT and many other universities, reveal that the Viennese gravitation physicists are held in high regard internationally.

Friday 20 February 2009

Gamma ray burst: Astronomers spot strongest-ever explosion
The strongest gamma ray blast ever known, exceeding the power of 9,000 exploding stars, has been discovered by astronomers in the deep-space constellation Carina
The radiation burst occurred 12.2 billion light years away in deep space, in the constellation Carina. Its light has taken most of the age of the universe to reach us.
Gamma ray bursts are the most luminous explosions in the universe. Scientists believe they occur when exotic massive stars run out of fuel and collapse to form
a black hole.
Jets of material powered by processes that are not yet fully understood are thought to blast outwards at nearly the speed of light, generating intense gamma rays.
The new explosion, designated GRB 080916C, was spotted last year by the American space agency NASA's Fermi Gamma-ray Space Telescope, which is designed to detect gamma radiation.
Astronomers soon discovered that the gamma ray burst belonged in the record books.
The short-lived blast, described in the online version of the journal Science, was more powerful than nearly 9,000 ordinary supernovae, or exploding stars.
Scientists calculated that the material emitting the gamma rays must have been moving at 99.9999 per cent the speed of light.
The explosion was enigmatic as well as spectacular due to a curious time delay separating the highest-energy emissions from the lowest.
Scientists are still trying to understand the reason for the time delay, which may have a straightforward physical cause or be due to peculiar quantum effects.
Professor Peter Michelson, a member of the Fermi Gamma-ray Space Telescope team, said: "Burst emissions at these energies are still poorly understood.
"This one burst raises all sorts of questions. In a few years, we'll have a fairly good sample of bursts,
and may have some answers."

Friday 13 February 2009

Engineers revolutionise nano-device fabrication
Washington : Engineers have created a process that may revolutionise the manufacture of nano-devices from computer memory to biomedical sensors by exploiting a novel type of metal.
The material can be moulded like plastics to create features at the nano-scale and yet is more durable and stronger than silicon or steel. The search for a cost-effective and manageable process for higher-density computer chip production at t
he nano-scale has been a challenge.
One solution is making nano-scale devices by simple stamping or moulding, like the method used for fabricating CDs or DVDs.
This however requires stamps or master moulds with nano-scale features. While silicon-based moulds produce relatively fine detail, they are not very durable. Metals are stronger, but the grain size of their internal structure does not allow nano-scale details to be imprinted on their surfaces.
Unlike most metals, "amorphous metals" known as bulk metallic glasses (BMGs) do not form crystal structures when they are cooled rapidly after heating.
Although they seem solid, they are more like a very slow-flowing liquid that has no structure beyond the atomic level - making them ideal for moulding fine details, said senior author Jan Schroers of the Yale School of Engineering & Applied Science.
Researchers have been exploring the use of BMGs for about a decade, according to Schroers. "We have finally been able to harness their unusual properties to transform both the process of making moulds and producing imprints," he said. "This process has the potential to replace several lithographic steps in the production of computer chips."
Schroers says BMGs have the pliability of plastics at moderately elevated temperatures, but they are stronger and more resilient than steel or metals at normal working temperatures, said an Yale release.
"We now can make template moulds that are far more reliable and lasting than ones made of silicon and are not limited in their detail by the grain size that most metals impose," said Schroers.
This research was published in Nature on Thursda
y.

Sunday 8 February 2009

Soon, electronic device that can become invisible
Washington: Scientists in California, US, have developed tiny electronic circuits that could pave the way for transparent electronics and other futuristic applications, including flexible electronic newspapers and wearable clothing displays.
In the new study, Chongwu Zhou and colleagues point out that although scientists have previously developed nano-sized transparent circuits, previous versions are limited to a handful of materials that are transparent semiconductors.
The researchers describe the development of transparent thin-film transistors (TTFTs) composed of highly aligned, single-walled carbon nanotubes - each about 1/50,000th the width of a single human hair.
They are transparent, flexible, and perform well.
Laboratory experiments showed that TTFTs could be easily applied to glass and plastic surfaces, and showed promise in other ways for a range of possible practical applications.
This research is a significant advance toward the long-sought goal of "invisible electronics" and transparent displays, which can be highly desirable for heads-up displays, wind-shield displays, and electronic paper.

Friday 6 February 2009

Hubble captures exceptionally deep view of unusual spiral galaxy
Washington: A spectacular new image captured by the Hubble Space Telescope has revealed an exceptionally deep view of an unusual spiral galaxy.
The image of the galaxy, which is in the Coma Galaxy Cluster, has been created from data taken by the Advanced Camera for Surveys on the NASA/ESA Hubble S
pace Telescope.
It reveals fine details of the galaxy, NGC 4921, as well as an extraordinary rich background of more remote galaxies stretching back to the early Universe.
The Coma Galaxy Cluster, in the northern constellation of Coma Berenices, the hair of Queen Berenice, is one of the closest very rich collections of galaxies in the nearby Universe.
The cluster, also known as Abell 1656, is about 320 million light-years from Earth and contains more than 1000 members.
The galaxies in rich clusters undergo many interactions and mergers that tend to gradually turn gas-rich spirals into elliptical systems without much active star formation.
As a result, there are far more ellipticals and fewer spirals in the Coma Cluster than are found in quieter corners of the Universe.
NGC 4921 is one of the rare spirals in Coma, and a rather unusual one. It is an example of an "anaemic spiral", where the normal vigorous star formation that creates a spiral galaxy's familiar bright arms is much less intense.
As a result, there is just a delicate swirl of dust in a ring around the galaxy, accompanied by some bright young blue stars that are clearly separated out by Hubble's sharp vision.
Much of the pale spiral structure in the outer parts of the galaxy is unusually smooth and gives the whole galaxy the ghostly look of a vast translucent jellyfish.
The long exposure times and sharp vision of Hubble also allowed it to not just image NGC 4921 in exquisite detail, but also to see far beyond into the distant Universe.
This image was created from 50 separate exposures through a yellow filter and another 30 exposures through a near-infrared filter using the Wide Field Channel of the Advanced Camera for Surveys on Hubble.

Wednesday 28 January 2009

Unlimited Information Storage may soon be a Reality
London: Researchers at Stanford University in Palo Alto, California, have used a feature of the electron to create holograms that pack information into subatomic spaces, which could one day lead to unlimited information storage.
"Our results will challenge some fundamental assumptions people had about the ultimate limits of information storage," graduate student Chris Moon, one of the authors of the
work, told Nature News.
The research team at Stanford University used a feature of the electron - its tendency to bounce probabilistically between different quantum states - to create holograms that pack information into subatomic spaces.
By encoding information into the electron's quantum shape, or wave function, the researchers were able to create a holographic drawing that contained 35 bits per electron.
Compared to previous technologies, Moon and his colleagues saw a way to go smaller by using a quantum analogy to the conventional hologram.
They used the quantum properties of electrons, rather than photons, as their source of 'illumination'.
Using a scanning tunnelling microscope, they stuck carbon monoxide molecules onto a layer of copper - their holographic plate. The molecules were positioned to create speckled patterns that would result in a holographic 'S'.
The sea of electrons that exists naturally at the surface of the copper layer served as their illumination.
Just as water bouncing off stones in a show pond create a rippling wave patterns, these electrons interfere with the carbon monoxide molecules to create a quantum hologram.
The researchers read the hologram using the microscope to measure the energy state of a single electron wave function. They showed they could read out an 'S' - for Stanford - with features as small as 0.3 nanometers.
In addition to breaking the atomic limit for information storage, the researchers demonstrated one of the essential features of holography.
They stacked two layers, or pages, of information - in this case, an 'S' and a 'U' - within the same hologram. They teased out the individual pages by scanning the hologram for electrons at different energy levels.
This led the Stanford team to think about the creation of quantum circuits.
In encoding the 'S', the researchers were concentrating the electron density at certain points and energy levels, and a concentration of electrons in space is, in essence, a wire.
That led study co-author Hari Manoharan to think about using the holograms as stackable quantum circuits, which may eventually be needed to wire together a quantum computer
.

Sunday 25 January 2009

Soon, plastic solar cells with higher efficiency
Washington: A company in the US is developing plastic solar cells for portable electronic devices, which would have higher efficiency than the current technology.
Solarmer Energy Inc., the company in question, is on track to complete a
commercial-grade prototype later this year, according to Dina Lozofsky, vice president of IP development and strategic alliances at Solarmer.
The prototype, a cell measuring eight square inches (50 square centimeters), is expected to achieve 8 percent efficiency and to have a lifetime of at least three years.
"New materials with higher efficiencies are really the key in our industry. Plastic solar cells are behind traditional solar-cell technology in terms of the efficiency that it can produce right now," Lozofsky said. "Everyone in the industry is in the 5 percent to 6 percent range," she added.
The invention, a new semiconducting material called PTB1, converts sunlight into electricity.
It has been invented by Luping Yu, Professor in Chemistry, and Yongye Liang, a Ph.D. student, both at the University of Chicago.
The active layer of PTB1 is a mere 100 nanometers thick, the width of approximately 1,000 atoms.
An advantage of the Chicago technology is its simplicity.
Several laboratories around the country have invented other polymers that have achieved efficiencies similar to those of Yu's polymers, but these require far more extensive engineering work to become a viable commercial product.
"We think that our system has potential," Yu said. "The best system so far reported is 6.5 percent, but that's not a single device. That's two devices," he added.
By combining Solarmer's device engineering expertise with Yu and Liang's semiconducting material, they have been able to push the material's efficiency even higher.
Silicon-based solar cells dominate the market today. Industry observers see a promising future for low-cost, flexible solar cells, said
According to UchicagoTech's Martin. "If people can make them sufficiently efficient, they may be useful for all sorts of applications beyond just the traditional solar panels on your house rooftop."
Partial solar eclipse on Monday
New Delhi: As the country celebrates Republic Day on Monday, a partial solar eclipse will occur on Monday afternoon when the moon will pass directly between the earth and the sun.
The partial phase of the eclipse will be visible in southern India, the eastern coastal belt, most of North-east, Andaman and Nicobar Islands and Lakshadweep, Director of Nehru Planetarium N Rathnashree said.
The eclipse will be annular in regions covering south of Africa, Antarctica, South East Asia and Australia.
Annular solar eclipse occurs when the moon is farther from the earth than normal in its elliptical orbit and hence, its apparent size is not sufficient to cover the sun completely, Director of Science Popularisation Association of Communicators and Educators (SPACE) C B Devgun told a news agency.
Therefore, even though the sun-moon alignment is perfect, the moon will appear slightly smaller in diameter than the sun and a thin ring of sunlight will remain visible around the dark silhouette of the moon, he said.
Perfect-alignment of the sun and the moon means the apparent sizes of both the celestial bodies will be the same when viewed from earth.
The eclipse will begin at 1026 hrs though it will be visible in India only from the afternoon and end at 1630 hrs on Monday, passing through various stages.
The first city to witness the eclipse in India will be Kanyakumari at 1408 hrs while it will be visible from 1417 hrs in Port Blair, the last Indian territory in which the celestial phenomenon will continue till 1625 pm.
Mars polar water is pure: Study
Paris: A large ice cap found at Mars' northern pole is "of a very high degree of purity," according to an international study reported by French researchers.
Radar data sent back by the US Mars Reconnaissance Orbiter (MRO) point to 95 per cent purity in this deposit, France's National Institute of Sciences of the Universe (Insu) said in a press release.
The Martian polar regions are believed to hold the equivalent of two to three million cubic kilometres" (0.47-0.72 million cu. miles) of ice, it said.
That makes it roughly 100 times more than the total volume of North America's Great Lakes, which is 22,684 cu. Kms (5,439 miles).
The study appeared in the journal Geophysical Research Letters, published by the American Geophysical Union.
Japan launches rocket with greenhouse-gas
Tokyo: Japan fired the world's first greenhouse-gas monitoring satellite into space on Friday, a launch deemed crucial in the country's quest to compete globally in putting commercial satellites into orbit.
The black, white and orange H2A rocket took off from the space center
on Tanegashima, a remote island in southern Japan.
The launch - the 15th for an H2A - had been delayed for several days because of bad weather.
Aboard the rocket was the world's first greenhouse-gas monitoring satellite called "Ibuki," which means "breath," and seven "baby satellites" - one developed by Japan Aerospace Exploration Agency, known as JAXA, and six created by university research centers and private industry.
The development cost for the greenhouse-gas monitoring satellite was 18.3 billion yen ($206 million), the government space agency said.
A successful launch was seen as crucial to Japan, which is trying to demonstrate that it has the capabilities with its domestically developed H2A rocket to compete in the global commercial launching business.
Japan has long been one of the world's leading space-faring nations and launched its first satellite in 1970.
But it has been struggling to get out from under China's shadow in recent years and gain a niche in the global rocket-launching business, which is dominated by Russia, the US and Europe's Arianespace.
JAXA says the latest launch itself cost about 8.5 billion yen ($96 million), the lowest ever. The standard for a competitive launch - set by Russia's Proton rocket - used to be around 7 billion yen, but has now risen to around 9 billion.
JAXA officials said the agency has already selected four other piggybacks for a launch in 2011. They will be launched for free, but JAXA is considering charging a launch fee in the future.
Earlier this month, Japan got its first commercial order to launch a satellite on an H2A. The agreement - which targets a liftoff date after April 2011 - is with South Korea.
A new way to produce hydrogen 'discovered'
Washington: Scientists have discovered what they claim is a new way to produce hydrogen "by exposing selected clusters of aluminium atoms to water".
"Our previous research suggested that electronic properties govern everything about these aluminium clusters, but this new study shows that it is the arrangement of atoms within the clusters that allows them to split water.
"Generally, this knowledge might allow us to design new nanoscale catalysts by changing the arrangements of atoms in a cluster. The results could open up a new area of research not only related to splitting water, but also to breaking the bonds of other molecules, as well," lead scientist Evan Pugh of Penn State University said.
In their study, the scientists probed the reactions of water with individual aluminium clusters by combining them under controlled conditions in a custom-designed flow-reactor.
They found that a water molecule will bind between two aluminium sites in a cluster as long as one of the sites behaves like a Lewis acid, a positively charged centre that wants to accept an electron, and the other behaves like a Lewis base, a negatively charged centre that wants to give away an electron.

Saturday 24 January 2009

Dear readers,
A very good morning!! It has been my dream to come up with a science & technology blog, since a long time; due to the growing importance of this field. We cannot dream of life today, with the thought of this major field.
Today, at last this dream of mine has come out to be true...Henceforth you will get the latest news on this interesting field of Science and Technology.
Hope you would love to read the contents of this blog...........Looking forward for your co-operation in the days to come.
Best wishes,
Suman Mukherjee
India.
www.sumanspeaks.blogspot.com