Threshold model — A threshold model in toxicology posits that anything above a certain dose of a toxin is dangerous, and anything below it safe. This model is usually applied to non carcinogenic health hazards.Edward J. Calabrese and Linda A. Baldwin wrote::The… … Wikipedia
Linear no-threshold model — The linear no threshold model (LNT) is a method for predicting the long term, biological damage caused by ionizing radiation and is based on the assumption that the risk is directly proportional to the dose at all dose levels. In other words, the … Wikipedia
Polygyny threshold model — The polygyny threshold model is an explanation of polygyny, the mating of one male species with multiple females. The model shows how females may gain a higher level of biological fitness by mating with a male who already has a mate. The female… … Wikipedia
Threshold displacement energy — The threshold displacement energy Td is the minimum kinetic energy that an atom in a solid needs to be permanently displaced from its lattice site to a defect position. It is also known as displacement threshold energy or just displacement energy … Wikipedia
Threshold voltage — The threshold voltage of a MOSFET is usually defined as the gate voltage where an inversion layer forms at the interface between the insulating layer (oxide) and the substrate (body) of the transistor. The creation of this layer is described next … Wikipedia
Model rocket — A typical model rocket during launch A model rocket is a small rocket that is commonly advertised as being able to be launched by anybody, to, in general, low altitudes (usually to around 100–500 m (300–1500 ft) for a 30 g (1 oz.) model) and … Wikipedia
Polytomous Rasch model — The polytomous Rasch model is generalization of the dichotomous Rasch model. It is a measurement model that has potential application in any context in which the objective is to measure a trait or ability through a process in which responses to… … Wikipedia
Process model (Australia) — A Process Model is a proposal to assist the Parliament of Australia make decisions concerning constitutional reform. In Australia, process models are devised to involve the public in republicanism.RationaleTo amend the Australian constitution, a… … Wikipedia
Conductivity near the percolation threshold — In a mixture between a dielectric and a metallic component, the conductivity σ and the dielectric constant ε of this mixture show a critical behavior if the fraction of the metallic component reaches the percolation threshold.[1] The behavior of… … Wikipedia
SETAR (model) — In statistics, Self Exciting Thereshold AutoRegressive (SETAR) models are typically applied to time series data as an extension of autoregressive models, in order to allow for higher degree of flexibility in model parameters through a regime… … Wikipedia
Logogen model — The logogen model of 1969 is a model of speech recognition that uses units called logogens to explain how humans comprehend spoken or written words. Logogens are a vast number of specialized recognition units, each able to recognize one specific… … Wikipedia
