“sensitivity”的概念、定义、翻译、参考文献-科学参考

sensitivity

Astronomy

A measure of the weakest signal discernible by a detecting system. The ratio of the amplitude of a signal above the noise level to the amplitude of the noise level itself is known as the signal-to-noise ratio. For most purposes, a minimum signal-to-noise ratio of 1 : 1 is required for the signal to be regarded as definitely detected. In the radio and infrared regions, the use of techniques such as integration, chopping, comparison with a stable laboratory source, and phase-sensitive detection can improve the basic sensitivity of the system by several orders of magnitude.

Statistics

See two-by-two table.

Electronics and Electrical Engineering

1. In general, the change produced in the output of a device per unit change in the input.
2. The magnitude of the change in the indicated value or deflection of a measuring instrument produced by a specified change in the measured quantity. It is usually quoted as the magnitude of the measured quantity required to produce full-scale deflection.
3. The ability of a radio receiver to respond to weak input signals. It is the minimum signal input to the receiver that produces a particular output value under stated conditions, particularly a designated signal-to-noise ratio.

Biology

One of the fundamental properties of all organisms: the capacity to detect, interpret, and respond to changes in the environment (e.g. the stimuli of light, touch, chemicals, etc.). Multicellular animals have specialized sense organs and effector organs for this purpose; in unicellular organisms, which lack a nervous system, the reception of and response to a stimulus occur in the same cell.

Geology and Earth Sciences

1. The consistency of clay as this is affected by remoulding. The effect depends on the type of clay and the amount of pore water. In a sensitive clay, shear strength is decreased dramatically on remoulding when moisture content remains constant. Sensitivity is measured as the ratio of the unconfined compressive strength to the strength in the remoulded state at the same water content.
2. In chemical analysis, the smallest change in concentration which can be discriminated by the analytical method.

单词	sensitivity
释义	sensitivity Astronomy A measure of the weakest signal discernible by a detecting system. The ratio of the amplitude of a signal above the noise level to the amplitude of the noise level itself is known as the signal-to-noise ratio. For most purposes, a minimum signal-to-noise ratio of 1 : 1 is required for the signal to be regarded as definitely detected. In the radio and infrared regions, the use of techniques such as integration, chopping, comparison with a stable laboratory source, and phase-sensitive detection can improve the basic sensitivity of the system by several orders of magnitude. Statistics See two-by-two table. Electronics and Electrical Engineering 1. In general, the change produced in the output of a device per unit change in the input. 2. The magnitude of the change in the indicated value or deflection of a measuring instrument produced by a specified change in the measured quantity. It is usually quoted as the magnitude of the measured quantity required to produce full-scale deflection. 3. The ability of a radio receiver to respond to weak input signals. It is the minimum signal input to the receiver that produces a particular output value under stated conditions, particularly a designated signal-to-noise ratio. Biology One of the fundamental properties of all organisms: the capacity to detect, interpret, and respond to changes in the environment (e.g. the stimuli of light, touch, chemicals, etc.). Multicellular animals have specialized sense organs and effector organs for this purpose; in unicellular organisms, which lack a nervous system, the reception of and response to a stimulus occur in the same cell. Geology and Earth Sciences 1. The consistency of clay as this is affected by remoulding. The effect depends on the type of clay and the amount of pore water. In a sensitive clay, shear strength is decreased dramatically on remoulding when moisture content remains constant. Sensitivity is measured as the ratio of the unconfined compressive strength to the strength in the remoulded state at the same water content. 2. In chemical analysis, the smallest change in concentration which can be discriminated by the analytical method.
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