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Topic: Efficiency

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Mechanical efficiency

Energy efficiency

Electrical efficiency

Volumetric efficiency

Thermodynamic efficiency

Algorithmic efficiency

Cogeneration

Heat engine

Jet engine

Carnot heat engine

Pulse detonation engine

Fuel efficiency

Effective Radiated Power

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	Propulsive Efficiency of Rowing (Site not responding. Last check: 2007-10-22)
		The internal or muscle efficiency is determined mainly by the effectiveness of muscle contraction and is estimated for rowing to be in the range of 14-27% (Fukunaga et al., 1986; Lisiecki and Rychlewski, 1987).
		The external or propulsive efficiency connected with hydrodynamics of the boat shell and oar blade is estimated to be in the range of 60-80% (Sanderson and Martindale, 1986, Affeld et al., 1993).
		Efficiency of boat shell propulsion (es) was calculated using propulsive power (Pp) and its waste in shell velocity fluctuation (Pws).
	www.coachesinfo.com /category/rowing/77 (1605 words)

	X-efficiency - Wikipedia, the free encyclopedia
		In a market with perfect competition, there will in general be no x-inefficiency because if any firm is less efficient than the others it will not make sufficient profits to stay in business in the long term.
		However, with other market forms such as monopoly it may be possible for x-inefficiency to persist, because the lack of competition makes it possible to use inefficient production techniques and still stay in business.
		It doesn't take account of whether the inputs are the best ones to be using, or whether the outputs are the best ones to be producing, which is referred to as allocative efficiency.
	en.wikipedia.org /wiki/X-efficiency (234 words)

	Efficiency Production Trench Boxes
		Efficiency Shores are an excellent lightweight resource for working around existing utilities, supporting trench walls near structures, curbs, or sidewalks, and for pipe installations where a larger backhoe can not be used.
		Efficiency Production’s Porta-Tank is a self contained water storage and power spray system that fits easily into the bed of a dump truck, flat bed truck, or trailer, thus eliminating the high cost of a single purpose water tanker.
		Efficiency’s HydraShield is an extremely versatile aluminum trench shield that supports trench walls and structures and adapts to on-the-spot requirements by using hydraulic cylinders for spreaders to accommodate varying trench widths.
	www.epi-shields.com (962 words)

	Efficiency, by Paul Heyne: The Concise Encyclopedia of Economics: Library of Economics and Liberty
		To economists, efficiency is a relationship between ends and means.
		Thus, economic efficiency is measured not by the relationship between the physical quantities of ends and means, but by the relationship between the value of the ends and the value of the means.
		From this perspective a parcel of land is used with maximum economic efficiency when it comes under the control of the party who is willing (which implies able) to pay the largest amount of money to obtain that control.
	www.econlib.org /library/Enc/Efficiency.html (1362 words)

	Efficiency (Site not responding. Last check: 2007-10-22)
		The efficiency of a statistic is the degree to which the statistic is stable from sample to sample.
		That is, the less subject to sampling fluctuation a statistic is, the more efficient it is. The efficiency of statistics is measured relative to the efficiency of other statistics and is therefore often called the relative efficiency.
		The efficiency of a statistic can also be thought of as the precision of the estimate: The more efficient the statistic, the more precise the statistic is as an estimator of the parameter.
	davidmlane.com /hyperstat/A12977.html (140 words)

	efficiency on Encyclopedia.com (Site not responding. Last check: 2007-10-22)
		Efficiency studies in forestry using data envelopment analysis.
		Non-parametric approach to the study of farm efficiency in agriculture.
		Measuring the technical efficiency of banks in Singapore for the period 1993-99: an application and extension of the Bauer et al.
	www.encyclopedia.com /html/x/x-efficien.asp (475 words)

	Efficiency - Encyclopedia.WorldSearch (Site not responding. Last check: 2007-10-22)
		Efficiency is the capability of acting or producing effectively with a minimum of waste, expense, or unnecessary effort.
		Fuel efficiency for its use in automobiles (also known as "gas milage").
		In several of these cases efficiency can be expressed as a result as percentage of what ideally could be expected, hence with 100% as ideal case.
	encyclopedia.worldsearch.com /efficiency.htm (410 words)

	Energy Efficiency
		Americans believe renewable energy and energy efficiency should be given funding priority by the Department of Energy, according to a national survey released by a sustainable energy group.
		The World Energy Efficiency Association (WEEA) was founded in June 1993 as a private, non-profit organization composed of developed and developing country institutions and individuals charged with increasing energy efficiency.
		Efficiency Vermont: Saving large amounts of electricity for less than the cost of generating the same amounts.
	healthandenergy.com /energy_efficiency.htm (2166 words)

	Market Transformation Strategies to Promote End-Use Efficiency
		Adoption and diffusion of energy efficiency measures is a complex and dynamic phenomenon involving interactions between technology, behavior, market conditions, and public policy.
		The rationale for market transformation is the same as the rationale for energy efficiency improvements: cost-effective energy efficiency improvements are possible in all end uses given technological advances and energy price increases of the past twenty years.
		If energy efficiency measures are cost effective, it is reasonable to ask why they are not widely implemented in the marketplace without policy and program intervention.
	www.aceee.org /pubs/e941.htm (968 words)

	SFB 504 glossary: Efficiency (Site not responding. Last check: 2007-10-22)
		Analysis of efficiency in the context of resource allocation has always been a central concern of economics, and it is an essential element of modern microeconomic theory.
		In a narrower sense, efficiency is a commonly agreed upon criterion to compare the economic desirability of different allocations, or states of the economy, and different allocation mechanisms or institutions.
		Pareto efficiency: An economic allocation is inefficient if there is an alternative allocation in which all agents are better off in terms of their own objective functions (utilities, profits, payoffs); it is said to be Pareto efficient if there is none such alternative allocation.
	www.sfb504.uni-mannheim.de /glossary/effi.htm (336 words)

	Economic Efficiency (Site not responding. Last check: 2007-10-22)
		Economic efficiency is the standard that economists use to evaluate a wide range of things.
		Pump-storage reduces the amount of electricity available to consumers, but it increases economic efficiency and reduces waste by shifting availability from periods when it is worth less to periods when it is worth more.
		But economic efficiency is impossible without freedom because it is not the narrow concept many accuse it of being.
	www.fee.org /vnews.php?nid=112 (1015 words)

	Smart Communities Network: Resource Efficiency Introduction (Site not responding. Last check: 2007-10-22)
		The terms efficiency and conservation are often used interchangeably, but in fact they have different meanings.
		Efficiency means getting the same or better service while using less resources.
		Conservation means simply using less and reducing waste; without efficiency, conservation generally implies a reduction in the level of service.
	www.sustainable.doe.gov /efficiency/reintro.shtml (281 words)

	Transportation Energy-Efficiency Workshop
		Energy efficiency is particularly difficult to measure in the transportation sector.
		Efficiency and greenhouse gas data are required by the international community.
		Although the shortest (and most efficient) way to get from point A to point B is by traveling a straight line, the phenomenon of the hub system has affected passenger travel, transportation modes, and energy use.
	www.eia.doe.gov /emeu/efficiency/transportation_ws.htm (1524 words)

	Efficiency Curves (Site not responding. Last check: 2007-10-22)
		At Zero output power, the efficiency is always zero, due to the fixed losses.
		At some point in the output curve, the efficiency may be seen to peak.
		Representative efficiency curves are presented for 28 VDC nominal parts, 6.5 watt nominal, 30 watt nominal and 80 watt nominal.
	mdipower.com /content/ApplicationNotes/html/efficiency.htm (162 words)

	Iowa Utilities Board \| Overview of Energy Efficiency Plans and Programs in Iowa (Site not responding. Last check: 2007-10-22)
		Consumer-owned utilities, which are not required to be rate-regulated, must file energy efficiency plans with the IUB by July 1 of even-numbered years.
		Electric energy efficiency programs are saving over 1,000 megawatts of electric capacity each year, as much as 15 percent of summer peak demand.
		Energy efficiency programs have helped utilities delay the installation of new power plants for a number of years, saving hundreds of millions of dollars.
	www.state.ia.us /government/com/util/ee.html (1029 words)

	Restructuring and Government Efficiency Home
		The Ministry of Restructuring and Government Efficiency (RGE) was created in November 2004 with the appointment of Minister Luke Ouellette to improve service to Albertans by coordinating and streamlining processes and programs.
		The ministry is committed to achieving efficiency, effectiveness and timeliness throughout the Government of Alberta.
		The 2004-2005 Annual Report for Alberta Restructuring and Government Efficiency was released September 29, 2005.
	www.efficiency.gov.ab.ca (292 words)

	Welcome to CEERT
		Department of Energy Report on reducing energy costs by increasing use of renewable and energy efficient technologies.
		Through an integrated campaign of policy intervention, public education and coalition building, CEERT and its public interest allies are working to establish broad public and political support for fair, equitable and environmentally responsible restructuring of the electric services industry.
		We have created and sustained alliances and coalitions, and built strong relationships with key environmental and renewable energy industry leaders in New England, Texas, the Pacific Northwest and the Rockies that share our goals of improving air quality and diversifying state electricity portfolios in California and throughout the United States.
	www.ceert.org (351 words)

	ACEEE's list of other web sites that concern energy efficiency
		Affordable Comfort's mission is to advance the performance of residential buildings through it's annual and regional training events for building professionals on ways to remodel, repair, build, and diagnose homes, so they perform their best.
		The Iowa Energy Center is a research, demonstration, and educational organization dedicated to increasing energy efficiency and use of renewable energy in Iowa.
		Northeast Energy Efficiency Partnerships Inc. (NEEP) is a non-profit regional organization founded in 1996 to increase and coordinate energy efficiency efforts in New England, New York and the mid-Atlantic region.
	www.aceee.org /altsites (3373 words)

	Energy: Scientific Principles
		Energy efficiency is the amount of useful energy extracted from a system divided by the total energy put into a system.
		For optimum efficiency, photovoltaic systems must be mounted on a movable base to keep the surface of the solar cell perpendicular to the sun's rays.
		The efficiency of passive solar systems, such as sun spaces and solar water heaters, is greatly affected by climate, season, and building orientation with respect to the sun.
	matse1.mse.uiuc.edu /~tw/energy/prin.html (12159 words)

	Efficiency - Game Theory .net (Site not responding. Last check: 2007-10-22)
		Perhaps the central theme of economic theory, efficiency is concerned with the optimal allocation of scarce resources.
		Efficiency is achieved when some specific criterion is maximized and no allocation of resources could yield a higher value according to that criterion.
		Usually, efficiency measures, such as Pareto optimality and Hicks optimality, attempt to maximize either individual or communal payoffs.
	www.gametheory.net /Dictionary/Efficiency.html (81 words)

	EERE: Building Energy Efficiency (Site not responding. Last check: 2007-10-22)
		Energy efficiency standards for appliances are promulgated by the U.S. Department of Energy.
		Special financing is available that recognizes the savings due to energy efficiency, which allow the building owner to assume greater monthly mortgage payments.
		In urban areas, building energy efficiency is hampered by higher urban temperatures, an effect known as urban heat islands.
	www.eere.energy.gov /EE/buildings.html (412 words)

	Defra, UK - Environmental Protection - Sustainable Energy: Energy Efficiency
		Improved energy efficiency is therefore a key element of the UK Climate Change Programme, which sets out the full range of activity envisaged.
		Wasting less energy saves money (significant improvements in energy efficiency can usually be achieved for low capital outlay and with a short payback period), creates jobs and helps make industry more competitive.
		The Energy Efficiency Commitment - requiring electricity and gas suppliers to achieve targets for the promotion of improvements in domestic energy efficiency.
	www.defra.gov.uk /environment/energy (1210 words)

	Energy Efficiency Centers: Experiences in the Transition Economies (Site not responding. Last check: 2007-10-22)
		The centers are responsible for managing their own projects to promote energy efficiency and international cooperation under the guidance of a board of directors, consisting of international experts and representatives of local government and non-government organizations.
		The ultimate goal of energy efficiency legislation is to create institutions, administrative measures, and economic mechanisms at the federal and regional levels which combined will attract investments in energy efficiency.
		Through the energy efficiency centers, companies can analyze the existing and potential new markets for their products, reveal potential barriers and ways to overcome them, and have access to information on privatization, tax, property, and other laws that affect the company doing business.
	www.pnl.gov /china/eec.htm (8634 words)

	Efficiency Maine - Saving Energy for Maine
		Efficiency Maine is a statewide effort to promote the more efficient use of electricity, help Maine residents and businesses reduce energy costs, and improve Maine's environment.
		Efficiency Maine is funded by electricity consumers and administered by the Maine Public Utilities Commission (Commission).
		The Commission created Efficiency Maine to fulfill the Energy Conservation Act, which directs the Commission to develop and, to the extent of available funds, implement energy conservation programs.
	www.efficiencymaine.com (240 words)

	Appliance Efficiency & Appliance Regulations
		It depends on an appliance's age, whether it was designed before or after the standards went into effect, or the efficiency level of the model.
		The Energy Commission maintains a database of efficient appliances which can be used by the federal government, contractors, building officials, utilities and others, mostly for verifying compliance with efficiency standards.
		Databases source files containing all appliances certified to the California Energy Commission as meeting the current efficiency standards are available for downloading as Microsoft Excel files.
	www.energy.ca.gov /efficiency/appliances (374 words)

	TITLE 24, PART 6 - California's Energy Efficiency Standards for Residential and Nonresidential Buildings
		The Energy Efficiency Standards for Residential and Nonresidential Buildings were established in 1978 in response to a legislative mandate to reduce California's energy consumption.
		The standards are updated periodically to allow consideration and possible incorporation of new energy efficiency technologies and methods.
		California's building efficiency standards (along with those for energy efficient appliances) have saved more than $56 billion in electricity and natural gas costs since 1978.
	www.energy.ca.gov /title24 (227 words)

	WALGREENS - A STRATEGIC ANALYSIS. Free term papers for college, book reports and research papers. Welcome to Essay ...
		Efficient management of the front-end offerings and auxiliary services will provide a higher profit margin than that of the pharmacy alone.
		The population of America is aging and Walgreens' main focus on prescriptions, vitamins and over-the-counter medication recognizes this aging market segment as one to be served efficiently and adequately.
		This type of strategy is efficient when: - There are many ways to differentiate - Buyer needs/uses are diverse - There are not many using the differentiation strategy (Dr. Ross 2000).
	www.essayexpress.com /essay/018700.html (16563 words)

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