Assets with low expected returns and high volatility are not part of the efficient frontier.
Advocates of self-driving cars also say the technology could help reduce carbon-dioxide emissions, in part by automatically choosing the most efficient route to a destination.
The old-fashioned sailing vessels remain an integral part of trade in the emirate enabling the fast and efficient transport of dates and other foodstuffs, says Khaldoun Asmar, CEO of Barari Group.
It first flew in 1989 and went on to become the best selling 30-seater plane ever made - in part because it is very fuel efficient and has half the running costs of a regional jet.
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Boston excels in large part becauase the pricing of startup equity is more efficient here than elsewhere.
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The smart grid projects that were a part of our energy efficient future somehow have been recast as consumer protection issues.
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"Waiting list initiatives are part of the process of hospitals becoming more and more efficient, " said Mr Jones.
Thus, India's Shree Cement, which has long suffered from water shortages, developed the world's most water-efficient method for making cement, in part by using air-cooling rather than water-cooling.
Now, because Medicare is such a big part of the health care system, making the program more efficient can help usher in changes in the way we deliver health care that can reduce costs for everybody.
It is part of broader efforts to make interacting with the federal government easier and more efficient for businesses of all sizes.
Part of that growth, to be sure, was due to overall growth in demand, but a big part of it I suspect is due to the switch from less fuel-efficient and environmentally friendly unconventional vehicles, to more fuel-efficient and environmentally friendly passenger cars, trucks and buses.
For her part, the Director-General highlighted the significant role of the UN Resident Coordinators as regards efficient delivery at the field level.
Individual taxpayers, for their part, got some temporary new credits for the purchase of hybrid vehicles and the installation of energy-efficient windows and solar heaters.
Today, thanks in part to discoveries made right here at Argonne, some of the most high-tech, fuel-efficient, pretty spiffy cars in the world are once again designed, engineered and built here in the United States.
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