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Topic: X-efficiency

    Note: these results are not from the primary (high quality) database.

In the News (Tue 25 Jun 19)

 Propulsive Efficiency of Rowing
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).
Therefore, another definition of efficiency was derived as a ratio of actual boat velocity (Vreal) to a maximal one (Vmax) that could be available in terms of whole produced power spent on boat propulsion.
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).
www.coachesinfo.com /category/rowing/77

 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.
X inefficiency only looks at the outputs that are produced with given inputs.
en.wikipedia.org /wiki/X-efficiency

 Efficiency Production Trench Boxes
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.
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, by Paul Heyne: The Concise Encyclopedia of Economics: Library of Economics and Liberty
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.
They point out, for example, that the wealthy dowager who bids scarce milk away from the mother of an undernourished infant in order to wash her diamonds is promoting economic efficiency.
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.
www.econlib.org /library/Enc/Efficiency.html

The efficiency of a statistic is the degree to which the statistic is stable from sample to sample.
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.
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.
davidmlane.com /hyperstat/A12977.html

 efficiency on Encyclopedia.com
Measuring the technical efficiency of banks in Singapore for the period 1993-99: an application and extension of the Bauer et al.
Efficiency studies in forestry using data envelopment analysis.
Non-parametric approach to the study of farm efficiency in agriculture.
www.encyclopedia.com /html/x/x-efficien.asp

 Efficiency - Encyclopedia.WorldSearch
Efficiency is the capability of acting or producing effectively with a minimum of waste, expense, or unnecessary effort.
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.
Fuel efficiency for its use in automobiles (also known as "gas milage").
encyclopedia.worldsearch.com /efficiency.htm

 SFB 504 glossary: Efficiency
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

 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.
For example, the energy efficiency of new housing in Sweden was greatly increased through a combination of extensive RandD, subsidized loans to home buyers and the national building code.
In spite of these complexities, energy efficiency greatly increased in many market segments in the United States during the past 20 years.
www.aceee.org /pubs/e941.htm

 Energy Efficiency
Americans want to see federal funding, tax incentives and appliance efficiency standards to promote renewable energy and energy-efficient technology programs, according to a recently released poll.
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.
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.
healthandenergy.com /energy_efficiency.htm

 Smart Communities Network: Resource Efficiency Introduction
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

 Economic Efficiency
Economic efficiency is the standard that economists use to evaluate a wide range of things.
But economic efficiency is impossible without freedom because it is not the narrow concept many accuse it of being.
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.
www.fee.org /vnews.php?nid=112

 Efficiency Curves
At Zero output power, the efficiency is always zero, due to the fixed losses.
Representative efficiency curves are presented for 28 VDC nominal parts, 6.5 watt nominal, 30 watt nominal and 80 watt nominal.
At some point in the output curve, the efficiency may be seen to peak.
mdipower.com /content/ApplicationNotes/html/efficiency.htm

 Efficiency Maine - Saving Energy for Maine
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.
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).

 Restructuring and Government Efficiency Home
The 2005-08 Business Plan for Alberta Restructuring and Government Efficiency (RGE) was released April 13, 2005 along with the Government Budget "Investing in the Next Alberta".
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.

 Appliance Efficiency Program
Database 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.
California Energy Commission's petition to the U.S. Department of Energy to exempt from preemption California's water efficiency standards for residential clothes washers.
The Appliance Efficiency Regulations were established in 1976 in response to a legislative mandate to reduce California's energy consumption.
www.energy.ca.gov /appliances

 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.
Modelers could use an energy-efficiency data series to predict the future.
www.eia.doe.gov /emeu/efficiency/transportation_ws.htm

 City of Toronto: Energy Efficiency Office
Following the recommendations of the 2000 Environmental Plan, the EEO is also expected to co-ordinate the City of Toronto’s energy efficiency efforts.
The Energy Efficiency Office (EEO) was established in 1990 by the former Toronto Council with a mandate to develop a comprehensive energy efficiency and conservation strategy for the City.
The EEO ensures that energy efficiency and CO emissions reduction are important considerations in all policy and planning endeavours.
www.city.toronto.on.ca /energy

 Efficiency - Game Theory .net
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.
Perhaps the central theme of economic theory, efficiency is concerned with the optimal allocation of scarce resources.
www.gametheory.net /Dictionary/Efficiency.html

 Appliance Efficiency & Appliance Regulations
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.
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.
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.
www.energy.ca.gov /efficiency/appliances

 Welcome to CEERT
By combining the expertise and resources of our coalition members from both the public interest and business sectors, CEERT has emerged as a compelling force on behalf of clean, renewable energy resources and energy efficiency measures in key policy making debates on the local, state and federal level.
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.
CEERT campaigns cover a wide range of issues, such as sustainable electrical generation policies throughout the West, clean vehicles and energy efficiency and conservation.

 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.
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.
The standards are updated periodically to allow consideration and possible incorporation of new energy efficiency technologies and methods.
www.energy.ca.gov /title24

 EPA Water Use Efficiency Program
This web site provides an overview of EPA's Water Efficiency Program which is primarily concerned with municipal water use.
Efficient water use helps to reduce the need for costly water supply and wastewater treatment facilities, helps maintain stream flows and healthy aquatic habitats, and reduces the energy used to pump, heat and treat water.
Guidelines for Water Conservation Plans: The Safe Drinking Water Act requirement for the Guidelines, the process used to develop them, and electronic versions of the Guidelines in both HTML and PDF files.
www.epa.gov /owm/water-efficiency/index.htm

 Iowa Utilities Board Overview of Energy Efficiency Plans and Programs in Iowa
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 plans in Iowa address both electric and natural gas use through a variety of programs which attempt to give all customers opportunities to participate.
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.
www.state.ia.us /government/com/util/ee.html

 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.
The Energy Efficiency Commitment - requiring electricity and gas suppliers to achieve targets for the promotion of improvements in domestic energy efficiency.
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.
www.defra.gov.uk /environment/energy

 EERE: Building Energy Efficiency
Special programs exist to encourage energy efficiency in schools and federal buildings.
In urban areas, building energy efficiency is hampered by higher urban temperatures, an effect known as urban heat islands.
Energy efficiency standards for appliances are promulgated by the U.S. Department of Energy.
www.eere.energy.gov /EE/buildings.html

 Energy: Scientific Principles
Energy efficiency is the amount of useful energy extracted from a system divided by the total energy put into a system.
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.
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.
matse1.mse.uiuc.edu /~tw/energy/prin.html

 ACEEE's list of other web sites that concern energy efficiency
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.
The Iowa Energy Center is a research, demonstration, and educational organization dedicated to increasing energy efficiency and use of renewable energy in Iowa.
Their energy efficiency and renewable energy program web site includes on-line publications, databases, project descriptions, and news.
www.aceee.org /altsites

 Energy Efficiency Centers: Experiences in the Transition Economies
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.
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.
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.
www.pnl.gov /china/eec.htm

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