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Delphi gasoline-injection engine technique rivals hybrid's edge

(Phys.org) -- Running a diesel like engine on gasoline is something Delphi is doing in notable fashion. They claim they are on to a promising way to enjoy an engine that gives the vehicle owner high efficiency ...

Technology / Energy & Green Tech

created May 21, 2012 | popularity 4.7 / 5 (18) | comments 40 | with audio podcast report

Flexible, paper-based supercapacitor could improve performance of hybrid electric vehicles

(PhysOrg.com) -- Scientists know that using supercapacitors in conjunction with batteries could greatly increase the fuel economy of hybrid electric vehicles (HEVs) due to the fact that supercapacitors can ...

Nanotechnology / Nanophysics

created Mar 20, 2012 | popularity 4.8 / 5 (14) | comments 5 | with audio podcast feature

Volkswagen Passat sets world record for longest distance on one tank of clean diesel fuel

The world's most fuel-efficient couple has done it again. John and Helen Taylor were determined to break the record for the farthest distance traveled on a single tank of fuel. They decided to attempt the ...

Technology / Energy & Green Tech

created May 11, 2012 | popularity 4.9 / 5 (16) | comments 10 | with audio podcast

Space weather expert has ominous forecast

A stream of highly charged particles from the sun is headed straight toward Earth, threatening to plunge cities around the world into darkness and bring the global economy screeching to a halt.

Space & Earth / Space Exploration

created May 08, 2012 | popularity 4.3 / 5 (9) | comments 7

Laser sparks revolution in internal combustion engines

For more than 150 years, spark plugs have powered internal combustion engines. Automakers are now one step closer to being able to replace this long-standing technology with laser igniters, which will enable cleaner, more ...

Physics / Optics & Photonics

created Apr 20, 2011 | popularity 4.7 / 5 (27) | comments 34 | with audio podcast

UT releases groundbreaking study on state of economy in Appalachia

A strong community is not unlike a computer. It needs good hardware—transportation, housing and infrastructure—and software—education, health care, and workforce development.

Other Sciences / Social Sciences

created May 23, 2012 | popularity not rated yet | comments 1

Silver and white cars are cooler, says study

(PhysOrg.com) -- From an environment standpoint, silver and white cars are cool; black cars are not. Researchers at the Berkeley Lab Environmental Energy Technologies Division (EETD) say that the color of ...

Technology / Energy & Green Tech

created Oct 25, 2011 | popularity 3.3 / 5 (8) | comments 26 | with audio podcast report

Saving the planet, one microwave at a time

Making simple repairs could save the UK could save millions of pounds by replacing fuses or plugs rather than throwing away perfectly reusable microwaves with brand new ones.

Space & Earth / Environment

created May 15, 2012 | popularity 4.7 / 5 (3) | comments 4

Software piracy costs record $63.4 billion in 2011: study

Software piracy cost the industry a record $63.4 billion globally in 2011 with emerging economies listed as the main culprits, an annual study said Tuesday.

Technology / Business

created May 15, 2012 | popularity 1.6 / 5 (5) | comments 9

Tool detects patterns hidden in vast data sets

Researchers from the Broad Institute and Harvard University have developed a tool that can tackle large data sets in a way that no other software program can. Part of a suite of statistical tools called MINE, ...

Technology / Computer Sciences

created Dec 15, 2011 | popularity 4.8 / 5 (5) | comments 1 | with audio podcast

Researchers discover less expensive low-temperature catalyst for hydrogen purification

(PhysOrg.com) -- Engineering researchers from Tufts University, the University of Wisconsin-Madison and Harvard University have demonstrated the low-temperature efficacy of an atomically dispersed platinum catalyst, which ...

Chemistry / Materials Science

created Sep 23, 2010 | popularity 4.8 / 5 (6) | comments 1 | with audio podcast

Globalized economy more sensitive to recessions: physicists

By applying the same rules that explain how genomes evolve, Rice University physicists have shown that the world economy is more sensitive to recessionary shocks and recovers more slowly from recessions now than it did 40 ...

Physics / General Physics

created Oct 18, 2010 | popularity 4.7 / 5 (11) | comments 56 | with audio podcast

3 ultra-efficient cars win $10M innovation award (w/ Video)

(AP) -- An ultralight, gas-powered car that can get 102 miles per gallon is among the winners of the $10 million Automotive X Prize, a contest to develop highly efficient, production-ready vehicles.

Technology / Energy & Green Tech

created Sep 16, 2010 | popularity 3.2 / 5 (5) | comments 7

Report shows data centers not using as much power as projected

A new report commissioned by the New York Times, shows that electricity consumption used by data centers in the United States and around the world grew at a much slower pace then was predicted by a U.S. Environmental Protec ...

Technology / Energy & Green Tech

created Aug 02, 2011 | popularity 5 / 5 (1) | comments 1 | with audio podcast report

Nuclear power plants can produce hydrogen to fuel the 'hydrogen economy'

The long-sought technology for enabling the fabled "hydrogen economy" — an era based on hydrogen fuel that replaces gasoline, diesel and other fossil fuels, easing concerns about foreign oil and air pollution — ...

Technology / Energy & Green Tech

created Mar 26, 2012 | popularity 4.2 / 5 (20) | comments 29 | with audio podcast

Economy

An economy (or "the economy") is the realized economic system of a country or other area. It includes the production, exchange, distribution, and consumption of goods and services of that area. The study of different types and examples of economies is the subject of economic systems. A given economy is the end result of a process that involves its technological evolution, history and social organization, as well as its geography, natural resource endowment, and ecology, among other factors. These factors give context, content, and set the conditions and parameters in which an economy functions.

Today the range of fields of study exploring, registering and describing the economy or a part of it, include social sciences such as economics, as well as branches of history (economic history) or geography (economic geography). Practical fields directly related to the human activities involving production, distribution, exchange, and consumption of goods and services as a whole, range from engineering to management and business administration to applied science to finance. All kind of professions, occupations, economic agents or economic activities, contribute to the economy. Consumption, saving and investment are core variable components in the economy and determine market equilibrium. There are three main sectors of economic activity: primary, secondary and tertiary.

The word "economy" can be traced back to the Greek word "one who manages a household", derived from οἴκος, "house", and νέμω, "distribute (especially, manage)". From οἰκονόμος "of a household or family" but also senses such as "thrift", "direction", "administration", "arrangement", and "public revenue of a state". The first recorded sense of the word "economy", found in a work possibly composed in 1440, is "the management of economic affairs", in this case, of a monastery. Economy is later recorded in other senses shared by οἰκονομία in Greek, including "thrift" and "administration". The most frequently used current sense, "the economic system of a country or an area", seems not to have developed until the 19th or 20th century.

For more information about Economy, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.

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