# effective

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**effective resistance**— noun : alternating current resistance * * * Elect. the resistance to an alternating current, expressed as the ratio of the power dissipated to the square of the effective current. * * * effective resistance, the resistance of a conductor to an… …112

**Effective Earth radius**— In telecommunication, effective Earth radius is the radius of a hypothetical Earth for which the distance to the radio horizon, assuming rectilinear propagation, is the same as that for the actual Earth with an assumed uniform vertical gradient… …113

**Effective height**— In telecommunication, the term effective height can refer to the height of the center of radiation of an antenna above the effective ground level. Or in low frequency applications involving loaded or nonloaded vertical antennas, the moment of the …114

**Effective input noise temperature**— In telecommunications, effective input noise temperature is the source noise temperature in a two port network or amplifier that will result in the same output noise power, when connected to a noise free network or amplifier, as that of the… …115

**Effective results in number theory**— For historical reasons and in order to have application to the solution of Diophantine equations, results in number theory have been scrutinised more than in other branches of mathematics to see if their content is effectively computable. Where… …116

**Effective radiated power**— In radio telecommunications, effective radiated power or equivalent radiated power (ERP) is a standardized theoretical measurement of radio frequency (RF) energy [cite web title = Abbreviations and Acronyms publisher = Institute for… …117

**Effective fitness**— In natural evolution and artificial evolution (e.g. artificial life and evolutionary computation) the fitness (or performance or objective measure) of a schema is rescaled to give its effective fitness which takes into account crossover and… …118

**Effective executive**— An effective executive is also known as a knowledge worker (coined by Peter Drucker in 1959). These executives are the capable individuals in an organization that spark the achievements of that organization. They are the men and women who conjure …119

**Effective pixels**— The number of effective pixels that an image sensor has is the count of elementary pixel sensors that contribute to the final image, as opposed to the number of total pixels, which includes unused or light shielded pixels around the edges.The… …120

**Effective marginal tax rate**— The term effective marginal tax rates , often abbreviated as EMTR refers to the combined effect of income tax and means testing of government welfare. It is the percentage of an extra unit of income (extra dollar, euro, yen etc) that the… …