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Efficiency factor is a ratio of some measure of performance to an expected value. In data communications, the factor is the ratio of the time to transmit
Efficiency_factor
Correlation factor comparing drag coefficient with an ideal wing
The Oswald efficiency, similar to the span efficiency, is a correction factor that represents the change in drag with lift of a three-dimensional wing
Oswald_efficiency_number
Ratio of energy extracted from sunlight in solar cells
areas. Several factors affect conversion efficiency, including its reflectance, thermodynamic efficiency, charge carrier separation efficiency, charge carrier
Solar_cell_efficiency
Degree to which a process minimizes waste of resources
consumption for given load Efficiency factor, in data communications Storage efficiency, effectiveness of computer data storage Efficiency (statistics), a measure
Efficiency
Maximum theoretical efficiency of a solar cell
physics, the radiative efficiency limit (also known as the detailed balance limit, Shockley–Queisser limit, Shockley–Queisser efficiency limit or SQ limit)
Shockley–Queisser_limit
Pump used to transport fluids by conversion of rotational kinetic energy
delivered to the fluid is ρ g Q H {\displaystyle \rho gQH} , the efficiency factor is given by η = ρ g Q H P m {\displaystyle \eta ={\frac {\rho gQH}{P_{m}}}}
Centrifugal_pump
Percentage of energy converted into electricity
efficiency factor of 20%. A heat rate value of 2 kWh/kWh gives an efficiency factor of 50%. A heat rate value of 4 MJ/MJ gives an efficiency factor of
Power_plant_efficiency
Ratio of active power to apparent power
customers with a low power factor. Power-factor correction (PFC) increases the power factor of a load, improving efficiency for the distribution system
Power_factor
Diagram of work left versus time
corrected by incorporating an efficiency factor into the burndown chart. After the first iteration of a project, the efficiency factor can be recalculated to
Burndown_chart
Interface between an electronic test system and a semiconductor wafer
packaged IC's. Probe card efficiency is affected by many factors. Perhaps the most important factor impacting probe card efficiency is the number of DUTs
Probe_card
Measurement of resource allocation
"operational efficiency", "efficiency" and "productivity" are often used interchangeably. An explanation of the difference between efficiency and (total factor) productivity
Operational_efficiency
{\displaystyle Q_{abs}=0} ). Q e x t {\displaystyle Q_{ext}} is the efficiency factor of extinction, which is defined as the ratio of the extinction cross
Anomalous_diffraction_theory
Measure of how much of an antenna's signal is transmitted in one direction
An antenna's directivity is greater than its gain by an efficiency factor, radiation efficiency. Directivity is an important measure because many antennas
Directivity
Stove that uses pellet fuel
operated with wood pellets as a renewable energy source can reach an efficiency factor of more than 90%.[citation needed] Scrap wood and ship-lap burners
Pellet_stove
Measure of the force amplification achieved by using a tool
of a real system relative to this ideal is expressed in terms of efficiency factors that take into account departures from the ideal. The lever is a movable
Mechanical_advantage
Designing systems to suit their users
environment and the tools in them for maximum work efficiency and maximum worker health and safety ... Human factors is a scientific discipline that applies systematic
Ergonomics
Energy allocation method
F: primary energy factor of the used fuel The reciprocal value of the fuel factor (f-intensity) describes the effective efficiency of the assumed sub-process
Carnot_method
increase the efficiency of agitation and prevent centrifuging of slurries in circular tanks... Aside from chemical requirements several key factors influence
Tank_leaching
When one nuclear reaction causes more
factor f {\displaystyle f} , and the neutron reproduction factor η {\displaystyle \eta } (also called the neutron efficiency factor). The six-factor formula
Nuclear_chain_reaction
Any of a set of standard configurations of Redundant Arrays of Independent Disks
fractional factor of 2, and the number of disks to write gives another factor of 2 in RAID 4/5 and 3 in RAID 6, for a theoretical efficiency factor of 1/4
Standard_RAID_levels
Type of photovoltaic cell
technologies. Hybrid cell efficiency must be increased to start large-scale manufacturing. Three factors affect efficiency. First, the bandgap should
Hybrid_solar_cell
Ratio of aggregate output to inputs
of 0.7 for labour and 0.3 for capital. Total factor productivity is a measure of productive efficiency in that it measures how much output can be produced
Total_factor_productivity
Type of aerodynamic resistance against the motion of a wing or other airfoil
} is the span efficiency factor. This indicates how, for a given wing area, high aspect ratio wings are beneficial to flight efficiency. With C L {\displaystyle
Lift-induced_drag
Performance measure of a device that uses thermal energy
In thermodynamics, the thermal efficiency ( η t h {\displaystyle \eta _{\rm {th}}} ) is a dimensionless performance measure of a device that uses thermal
Thermal_efficiency
Voluntary computer power supply certification program
for products that have more than 80% energy efficiency at 20%, 50% and 100% of rated load, and a power factor of 0.9 or greater at 100% load. EPRI (Electric
80_Plus
Defunct US government agency
The Department of Government Efficiency (DOGE) was a United States federal initiative launched by the second Trump administration. It was first suggested
Department of Government Efficiency
Department_of_Government_Efficiency
Telecommunications performance metric
radiation efficiency are difficult. Classical techniques include the ″Wheeler method″ (also referred to as ″Wheeler cap method″) and the ″Q factor method″
Radiation_efficiency
factor is a metric used in the United States to compare the energy conversion efficiency of residential appliances and equipment. The energy factor is
Energy_factor
rather than their impact. Atom economy, E-factor, yield, reaction mass efficiency and effective mass efficiency are all metrics that compare the mass of
Green_chemistry_metrics
Cyclic water pump powered by hydropower
energy efficiency. Actual water delivered will be further reduced by the energy efficiency factor. In the above example, if the energy efficiency is 70%
Hydraulic_ram
Efficiency leads to increased demand
increase the efficiency of a resource's use lead to a rise, rather than a fall, in total consumption of that resource. Greater efficiency reduces the amount
Jevons_paradox
Technique in analytical chemistry
parameters are the: efficiency factor(N), the retention factor (kappa prime), and the separation factor (alpha). Together the factors are variables in a
High-performance liquid chromatography
High-performance_liquid_chromatography
Distance an aircraft can fly between takeoff and landing
Off-nominal temperatures may be accounted for with a temperature efficiency factor η temp {\displaystyle \eta _{\text{temp}}} (e.g. 99% at 10 deg C above
Range_(aeronautics)
Form of thermal efficiency
energy efficiency of a particular vehicle, given as a ratio of distance traveled per unit of fuel consumed. It is dependent on several factors including
Fuel_efficiency
Information rate that can be transmitted over a given bandwidth
Spectral efficiency (alternatively, spectrum efficiency or bandwidth efficiency) refers to the information rate that can be transmitted over a given bandwidth
Spectral_efficiency
Work done divided by heat provided
the outside environment has zero efficiency. The efficiency of internal combustion engines depends on several factors, the most important of which is the
Engine_efficiency
Device used to produce electricity from light
thermodynamic efficiency, quantum efficiency, integrated quantum efficiency, VOC ratio, and fill factor. Reflectance losses are a portion of quantum efficiency under
Solar_cell
Battery electric compact executive car
and electric motor system. None are used to construct the motor (efficiency factor of 93 percent), while the battery uses two thirds less cobalt than
BMW_i4
Overview of and topical guide to industrial organization
between them Production side of Industry: Production theory productive efficiency factors of production total, average, and marginal product curves marginal
Outline of industrial organization
Outline_of_industrial_organization
Equates human impact on the environment
is measured in units of gha per capita. Technology is a unitless efficiency factor. In the I=PAT equation, the variable P represents the population of
I_=_PAT
When production relates to consumer preferences in an economy
Allocative efficiency is a state of the economy in which production is aligned with the preferences of consumers and producers; in particular, the set
Allocative_efficiency
Methods for higher energy efficiency
Efficient energy use, or energy efficiency, is the process of reducing the amount of energy required to provide products and services. There are many technologies
Efficient_energy_use
Personality model consisting of five broad dimensions
psychology and psychometrics, the Big Five personality trait model or five-factor model (FFM), sometimes called by the mnemonic acronym OCEAN or CANOE, is
Big_Five_personality_traits
Measure of energy loss in storage systems
Roundtrip efficiency is a key performance metric for an energy storage system (ESS) that characterizes the energy lost during a full charge–discharge cycle
Roundtrip_efficiency
Mathematical model to quantify lift
dy}{\text{.}}} From these quantities and the aspect ratio AR, the span efficiency factor e = 1 π A R ⋅ L 2 ρ V D {\displaystyle e={\frac {1}{\pi \mathrm {A\
Lifting-line_theory
Measure of aerodynamic efficiency
as (L/D)max=12πεARCD,0, where AR is the aspect ratio, ε the span efficiency factor, a number less than but close to unity for long, straight-edged wings
Lift-to-drag_ratio
Assembly of photovoltaic cells used to generate electricity
areas. Several factors affect conversion efficiency, including its reflectance, thermodynamic efficiency, charge carrier separation efficiency, charge carrier
Solar_panel
Cooling output divided by electricity input, as a standard for HVAC systems
The seasonal energy efficiency ratio (SEER) is a measurement used to rate the efficiency of air conditioners. The SEER rating of a device is the cooling
Seasonal energy efficiency ratio
Seasonal_energy_efficiency_ratio
Measure of the heating efficiency of air source heat pumps
seasonal performance factor (HSPF) is a term used in the heating and cooling industry. HSPF is specifically used to measure the efficiency of air source heat
Heating seasonal performance factor
Heating_seasonal_performance_factor
factor, F , {\displaystyle ~F,~} is a quantity measuring the efficiency of absorption of pump in the core of a double-clad fiber. The efficiency of
Filling_factor
Type of second-generation solar cell
side will have a larger fill factor and therefore a higher efficiency. Whereas these parameters characterize the efficiency of the solar cell based mostly
Thin-film_solar_cell
Used to define marginal product and to distinguish allocative efficiency
allocative efficiency, a key focus of economics. One important purpose of the production function is to address allocative efficiency in the use of factor inputs
Production_function
Discussing what form of transport is the most fuel efficient and economical
The energy efficiency in transport is the useful travelled distance, of passengers, goods or any type of load; divided by the total energy put into the
Energy efficiency in transport
Energy_efficiency_in_transport
Composite building material
can be used to predict composite strength, including an orientation efficiency factor, η 0 {\displaystyle \eta _{0}} , which accounts for the decrease in
Fiber-reinforced_composite
Movable barrier that allows ingress and egress
is a high cost efficiency factor compared to wooden doors. Most modern exterior walls provide thermal insulation and energy efficiency, which can be indicated
Door
Motherboard and power supply configuration
ATX (Advanced Technology Extended) is a motherboard and power supply form factor and configuration specification developed by Intel. It aimed to improve
ATX
Average distance travelled by a particle between impacts with other particles
\ell ={\frac {2d}{3\Phi Q_{\text{s}}}},} where Qs is the scattering efficiency factor. Qs can be evaluated numerically for spherical particles using Mie
Mean_free_path
Polymerization process involving free radicals as repeating units
initiator molecules actually add monomers to form polymer chains. The efficiency factor f is defined as the fraction of the original initiator which contributes
Radical_polymerization
Ability of a cell to take up DNA
and to compare the efficiency of different plasmid, vectors and host cells. This efficiency can be affected by a number of factors, including the method
Transformation_efficiency
Video compression format, succeeds H.264/MPEG-4 AVC
High Efficiency Video Coding (HEVC), also known as H.265 and MPEG-H Part 2, is a patent-encumbered video compression standard designed as part of the MPEG-H
High_Efficiency_Video_Coding
American military unit
This was 74% of the total built up area of the town for a bombing efficiency factor of 0.0016 square miles (4,100 m2) per ton. Take off time on this mission
330th_Bombardment_Group_(VH)
How efficiently a source produces visible light
efficacy of a source is the product of its efficiency in converting energy to electromagnetic radiation, and a factor representing how well the emitted radiation
Luminous_efficacy
In welfare economics, distributive efficiency occurs when goods and services are received by those who have the greatest need for them. Abba Lerner first
Distributive_efficiency
Statistical method
Factor analysis is a statistical method used to describe variability among observed, correlated variables in terms of a potentially lower number of unobserved
Factor_analysis
Internal inefficiency of a firm
introduced the concept of X-inefficiency in his paper "Allocative Efficiency vs. X- Efficiency", which was published in American Economic Review. X-Inefficiency
X-inefficiency
Aerodynamic dimensionaless parameter
the aspect ratio, and ϵ {\displaystyle \epsilon } is the aircraft's efficiency factor. Substituting for C L {\displaystyle C_{L}} gives: C D , i = 4.822
Zero-lift_drag_coefficient
Theoretical gross margin of a gas-fired power plant
German Dark Spread tables use a fuel efficiency factor of 35% for the coal conversion, and an energy conversion factor of 7.1 for converting tonnes/coal
Spark_spread
Aircraft fuel efficiency
usually higher. An airline efficiency depends on its fleet fuel burn, seating density, air cargo and passenger load factor, while operational procedures
Fuel_economy_in_aircraft
Power supply with switching regulator
the pass transistor. The switched-mode power supply's higher electrical efficiency is an important advantage. Switched-mode power supplies can also be substantially
Switched-mode_power_supply
American economist (born 1939)
needed] Market efficiency denotes how information is factored in price, Fama (1970) emphasizes that the hypothesis of market efficiency must be tested
Eugene_Fama
Topics referred to by the same term
through a given flow meter K-factor (centrifugation), relative pelleting efficiency of a given centrifuge rotor K factor (crude oil refining), a system
K-factor
Type of electronic oscillator
quality factor Q, the excess noise factor F, and the efficiency η. The overall efficiency η can be expressed as the product of current efficiency ηI and
Cross-coupled_LC_oscillator
Electricity-induced chemical reaction
Foundation. p. 20. Archived from the original (PDF) on 16 September 2013. Efficiency factors for PEM electrolysers up to 94% are predicted, but this is only theoretical
Electrolysis_of_water
Electric convertible sports car (2008–2012)
generated by newer, 58% efficiency CCGT power plants, results in a conversion factor of 21,763 Wh⁄gal and yields a fuel efficiency of 77.7 mpgge. Recharging
Tesla Roadster (first generation)
Tesla_Roadster_(first_generation)
Method to produce electricity from solar radiation
areas. Several factors affect conversion efficiency, including its reflectance, thermodynamic efficiency, charge carrier separation efficiency, charge carrier
Photovoltaics
Type of electrodeless gas-discharge lamp
times ballast factor (BF), divided by the input power in watts (IP): LER = EFF × TLL × BF / IP The "system efficiency" for a high-efficiency plasma lamp
Plasma_lamp
Statistic for comparing the overall value of a basketball player
statistical benchmark for comparing the overall value of players is called efficiency. It is a composite basketball statistic that is derived from basic individual
Efficiency_(basketball)
Visualization of all possible options of output for a two-good economy
such as allocative efficiency, economies of scale, opportunity cost (or marginal rate of transformation), productive efficiency, and scarcity of resources
Production–possibility frontier
Production–possibility_frontier
Quantum effect of uncertainty
{\displaystyle \eta } is the efficiency factor. That is the product of transmission window efficiency to our photodetector, and quantum efficiency. f s p {\displaystyle
Quantum_noise
Concept in economics
additional factor of production. Abel, Andrew; Mankiw, Gregory; Summers, Lawrence; Zeckhauser, Richard (1989). "Assessing Dynamic Efficiency: Theory and
Dynamic_efficiency
Metric for space taken up by one tonne of cargo in a ship
stowage factor can be used in ship design and as a reference to evaluate the efficiency of use of the cargo space on a ship. The stowage factor varies
Stowage_factor
Eurovent standards for air conditioner performance depending on time of year
operating Energy Efficiency Ratios (EER), for different seasonal air or water temperatures, and including for appropriate weighting factors. These values
European seasonal energy efficiency ratio
European_seasonal_energy_efficiency_ratio
Measurement of sleep duration
Lapierre, Sylvie; Hudon, Carol; Desgagné, Alain (2019-02-15). "Factors involved in sleep efficiency: a population-based study of community-dwelling elderly persons"
Sleep_efficiency
Higher wage paid to encourage productivity
In labor economics, an efficiency wage is a wage paid in excess of the market-clearing wage to increase the labor productivity of workers. Specifically
Efficiency_wage
Efficiency standard of air filters
HEPA (/ˈhɛpə/, high efficiency particulate air, or high efficiency particulate arresting) is an efficiency standard of air filters. A HEPA filter is an
HEPA
Electronic hardware trend
since 2014, the company has managed to improve the efficiency of its mobile processors by a factor of 31.7, which is a doubling rate of 1.2 years. In
Koomey's_law
Cell reproduction parameter
testing serum lots, measuring the effects of growth factors, and for toxicity testing. Plating Efficiency is the number of cells that grow into colonies per
Plating_efficiency
Seventh letter in the Greek alphabet
learning rate. Telecommunications, η stands for efficiency Electronics, η stands for the ideality factor of a bipolar transistor, and has a value close
Eta
manufacturers on efficiency classification, with three efficiency classes: Eff 1 for High Efficiency Eff 2 for Standard Efficiency Eff 3 for Low Efficiency The term
Premium_efficiency
Quality measure of a statistical method
In statistics, efficiency is a measure of quality of an estimator, of an experimental design, or of a hypothesis testing procedure. Essentially, a more
Efficiency_(statistics)
Electrical production measure
The net capacity factor is the unitless ratio of actual electrical energy output over a given period of time to the theoretical maximum electrical energy
Capacity_factor
Numerical measures that characterize amplifier properties and performance
10–20% with a max efficiency of 25% for direct coupling of the output. Inductive coupling of the output can raise their efficiency to a maximum of 50%
Amplifier_figures_of_merit
DNA or mRNA sequence representing the end of transcription or translation
optimized to increase termination efficiency. The two types of termination signals in bacteria are intrinsic and factor-dependent terminators. Intrinsic
Termination_signal
Sortation system consisting of a chain of conveyor belts
Throughput={SorterSpeed(MetersPerHour)\times No.OfCellsPerCarrier\times EfficiencyFactor} \over CarrierPitch(Meters)} Accuracy: With precise control and advanced
Cross_belt_sorter
Measure of a device's efficiency at allowing fluid flow
The flow coefficient of a device is a relative measure of its efficiency at allowing fluid flow. It describes the relationship between the pressure drop
Flow_coefficient
Economic theory that asset prices fully reflect all available information
Fama's influential 1970 review paper, he categorized empirical tests of efficiency into "weak-form", "semi-strong-form", and "strong-form" tests. These categories
Efficient-market_hypothesis
Correction factor which describes the deviation of a real gas from ideal gas behavior
thermodynamics, the compressibility factor (Z), also known as the compression factor or the gas deviation factor, describes the deviation of a real gas
Compressibility_factor
Property of an algorithm
sorted in reverse order. In practice, there are other factors which can affect the efficiency of an algorithm, such as requirements for accuracy and/or
Algorithmic_efficiency
Topic relating to sustainability science
and services. Strategies that have been linked to eco-efficiency include "Factor 4" and "Factor 10", which call for specific reductions in resource use
Eco-efficiency
Statistical principle about ratio of effects to causes
known as the 80:20 rule, the law of the vital few and the principle of factor sparsity) states that, for many outcomes, roughly 80% of consequences come
Pareto_principle
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