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Sensitivities
Sensitivity may refer to: Science and technology Natural sciences * Sensitivity (physiology), the ability of an organism or organ to respond to external stimuli ** Sensory processing sensitivity in humans * Sensitivity and specificity, statistical measures of the performance of binary classification tests * Allergic sensitivity, the strength of a reaction to an allergen * The inverse of resistance (ecology), the ability of populations to remain stable when subject to disturbance Electronics * Sensitivity (electronics), the minimum magnitude of input signal required to produce a specified output signal ** Sensitivity of a transducer, the relationship between input and output power *** Sensitivity (electroacoustics) Mathematics * Sensitivity (control systems), variations in process dynamics and control systems * Sensitivity analysis, apportionment of the uncertainty in the output of a mathematical model among its inputs * Sensitivity and specificity, statistical measures of the per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensitivity Analysis
Sensitivity analysis is the study of how the uncertainty in the output of a mathematical model or system (numerical or otherwise) can be divided and allocated to different sources of uncertainty in its inputs. A related practice is uncertainty analysis, which has a greater focus on uncertainty quantification and propagation of uncertainty; ideally, uncertainty and sensitivity analysis should be run in tandem. The process of recalculating outcomes under alternative assumptions to determine the impact of a variable under sensitivity analysis can be useful for a range of purposes, including: * Testing the robustness of the results of a model or system in the presence of uncertainty. * Increased understanding of the relationships between input and output variables in a system or model. * Uncertainty reduction, through the identification of model input that cause significant uncertainty in the output and should therefore be the focus of attention in order to increase robustness (perhap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensitivity (physiology)
In physiology, a stimulus is a detectable change in the physical or chemical structure of an organism's internal or external environment. The ability of an organism or organ to detect external stimuli, so that an appropriate reaction can be made, is called sensitivity (excitability). Sensory receptors can receive information from outside the body, as in touch receptors found in the skin or light receptors in the eye, as well as from inside the body, as in chemoreceptors and mechanoreceptors. When a stimulus is detected by a sensory receptor, it can elicit a reflex via stimulus transduction. An internal stimulus is often the first component of a homeostatic control system. External stimuli are capable of producing systemic responses throughout the body, as in the fight-or-flight response. In order for a stimulus to be detected with high probability, its level of strength must exceed the absolute threshold; if a signal does reach threshold, the information is transmitted to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Price Sensitivity
A good's price elasticity of demand (E_d, PED) is a measure of how sensitive the quantity demanded is to its price. When the price rises, quantity demanded falls for almost any good, but it falls more for some than for others. The price elasticity gives the percentage change in quantity demanded when there is a one percent increase in price, holding everything else constant. If the elasticity is −2, that means a one percent price rise leads to a two percent decline in quantity demanded. Other elasticities measure how the quantity demanded changes with other variables (e.g. the income elasticity of demand for consumer income changes). Price elasticities are negative except in special cases. If a good is said to have an elasticity of 2, it almost always means that the good has an elasticity of −2 according to the formal definition. The phrase "more elastic" means that a good's elasticity has greater magnitude, ignoring the sign. Veblen and Giffen goods are two classes of good ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Information Sensitivity
Information sensitivity is the control of access to information or knowledge that might result in loss of an advantage or level of security if disclosed to others. Loss, misuse, modification, or unauthorized access to sensitive information can adversely affect the privacy or welfare of an individual, trade secrets of a business or even the security and international relations of a nation depending on the level of sensitivity and nature of the information. Non-sensitive information Public information This refers to information that is already a matter of public record or knowledge. With regard to government and private organizations, access to or release of such information may be requested by any member of the public, and there are often formal processes laid out for how to do so. The accessibility of government-held public records is an important part of government transparency, accountability to its citizens, and the values of democracy. Public records may furthermore refer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensitivity (song)
"Sensitivity" is the title of a number-one single by American singer Ralph Tresvant. It was the first single from the self-titled debut album of the New Edition frontman since the split of the group. The hit song spent one week at number one on the US ''Billboard'' R&B chart, becoming his biggest hit. It also peaked at number four on the US ''Billboard'' Hot 100 and number eighteen on the UK Singles Chart The UK Singles Chart (currently titled Official Singles Chart, with the upper section more commonly known as the Official UK Top 40) is compiled by the Official Charts Company (OCC), on behalf of the British record industry, listing the top-s .... Charts Weekly charts Year-end charts Certifications See also * List of number-one R&B singles of 1990 (U.S.) References 1990 songs 1990 debut singles MCA Records singles Music Week number-one dance singles New jack swing songs Ralph Tresvant songs Song recordings produced by Jimmy Jam and Terry Lewis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensitivity (Shapeshifters Song)
Sensitivity may refer to: Science and technology Natural sciences * Sensitivity (physiology), the ability of an organism or organ to respond to external stimuli ** Sensory processing sensitivity in humans * Sensitivity and specificity, statistical measures of the performance of binary classification tests * Allergic sensitivity, the strength of a reaction to an allergen * The inverse of resistance (ecology), the ability of populations to remain stable when subject to disturbance Electronics * Sensitivity (electronics), the minimum magnitude of input signal required to produce a specified output signal ** Sensitivity of a transducer, the relationship between input and output power *** Sensitivity (electroacoustics) Mathematics * Sensitivity (control systems), variations in process dynamics and control systems * Sensitivity analysis, apportionment of the uncertainty in the output of a mathematical model among its inputs * Sensitivity and specificity, statistical measures of the per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Film Speed
Film speed is the measure of a photographic film's sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system. A closely related ISO system is used to describe the relationship between exposure and output image lightness in digital cameras. Relatively insensitive film, with a correspondingly lower speed index, requires more exposure to light to produce the same image density as a more sensitive film, and is thus commonly termed a ''slow film''. Highly sensitive films are correspondingly termed ''fast films''. In both digital and film photography, the reduction of exposure corresponding to use of higher sensitivities generally leads to reduced image quality (via coarser film grain or higher image noise of other types). In short, the higher the sensitivity, the grainier the image will be. Ultimately sensitivity is limited by the quantum efficiency of the film or sensor. Film speed measurement systems His ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensitivity (explosives)
In explosives engineering, sensitivity refers to the degree to which an explosive can be initiated by impact, heat, or friction. Current in-use standard methods of mechanical (impact and friction) senstivity determination differ by the sample preparation (constant mass or volume is usually used; pile or pressed pellet), sample arrangement (confined/unconfined sample etc), instrument type, go/not go criteria, and the statistical analysis of results. Sensitivity, stability and brisance are three of the most significant properties of explosives that affect their use and application. All explosive compounds have a certain amount of energy required to initiate. If an explosive is too sensitive, it may go off accidentally. A safer explosive is less sensitive and will not explode if accidentally dropped or mishandled. However, such explosives are more difficult to initiate intentionally. Explosive train Less sensitive explosives can be initiated by smaller quantities of more sensitive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensitivity (control Systems)
The controller parameters are typically matched to the process characteristics and since the process may change, it is important that the controller parameters are chosen in such a way that the closed loop system is not sensitive to variations in process dynamics. One way to characterize sensitivity is through the nominal sensitivity peak M_s: M_s = \max_ \left, S(j \omega) \ = \max_ \left, \frac \ where G(s) and C(s) denote the plant and controller's transfer function in a basic closed loop control system written in the Laplace domain using unity negative feedback. The sensitivity function S, which appears in the above formula also describes the transfer function from external disturbance to process output. In fact, assuming an additive disturbance ''n'' after the output of the plant, the transfer functions of the closed loop system are given by Y(s) = \frac R(s) + \frac N(s) Hence, lower values of , S, suggest further attenuation of the external disturbance. The sensiti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensory Processing Sensitivity
Sensory processing sensitivity (SPS) is a temperamental or personality trait involving "an increased sensitivity of the central nervous system and a deeper cognitive processing of physical, social and emotional stimuli". The trait is characterized by "a tendency to 'pause to check' in novel situations, greater sensitivity to subtle stimuli, and the engagement of deeper cognitive processing strategies for employing coping actions, all of which is driven by heightened emotional reactivity, both positive and negative". A human with a particularly high measure of SPS is considered to have "hypersensitivity", or be a highly sensitive person (HSP). The terms ''SPS'' and ''HSP'' were coined in the mid-1990s by psychologists Elaine Aron and her husband Arthur Aron, who developed the Highly Sensitive Person Scale (HSPS) questionnaire by which SPS is measured. Other researchers have applied various other terms to denote this responsiveness to stimuli that is seen in humans and other spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensitivity (electroacoustics)
The sensitivity of an electronic device, such as a communications system receiver, or detection device, such as a PIN diode, is the minimum magnitude (mathematics), magnitude of input Signalling (telecommunication), signal required to produce a specified output signal having a specified signal-to-noise ratio, or other specified criteria. Sensitivity is sometimes improperly used as a synonym for ''responsivity''. Electroacoustics The sensitivity of a microphone is usually expressed as the sound field strength in decibels (dB) relative to 1 volt, V/Pascal (unit), Pa (Pa = newton (unit), N/meter, m2) or as the transfer factor in millivolts per pascal (unit), pascal (mV/Pa) into an Open-circuit voltage, open circuit or into a 1 kiloohm Load impedance, load. The sensitivity of a loudspeaker is usually expressed as dB / 2.83 VRMS at 1 metre. This is not the same as the electrical efficiency; see Loudspeaker#Efficiency vs. sensitivity, Efficiency vs sensitivity. The sensitivity of a hy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transducer
A transducer is a device that converts energy from one form to another. Usually a transducer converts a signal in one form of energy to a signal in another. Transducers are often employed at the boundaries of automation, measurement, and control systems, where electrical signals are converted to and from other physical quantities (energy, force, torque, light, motion, position, etc.). The process of converting one form of energy to another is known as transduction. Types * Mechanical transducers, so-called as they convert physical quantities into mechanical outputs or vice versa; * Electrical transducers however convert physical quantities into electrical outputs or signals. Examples of these are: ** a thermocouple that changes temperature differences into a small voltage; ** a linear variable differential transformer (LVDT), used to measure displacement (position) changes by means of electrical signals. Sensors, actuators and transceivers Transducers can be categorized by wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
