threshold size
1threshold velocity — the velocity required for particles of a certain size to be taken into transport by an agent of erosion (entrainment) …
2Absolute threshold of hearing — The absolute threshold of hearing (ATH) is the minimum sound level of a pure tone that an average ear with normal hearing can hear with no other sound present. The absolute threshold relates to the sound that can just be heard by the… …
3Error threshold (evolution) — The error threshold is a concept in the study of evolutionary biology and population genetics and is concerned with the origins of life, in particular of very early life, before the advent of DNA. The first self replicating molecules were… …
4Displaced threshold — A displaced threshold is a runway threshold located at a point other than the physical beginning or end of the runway. The portion of the runway so displaced may be used for takeoff but not for landing. Landing aircraft may use the displaced area …
5Extinction threshold — is a term used in conservation biology to explain the point at which a species, population or metapopulation, experiences an abrupt change in density or number because of an important parameter, such as habitat loss. It is at this critical value… …
6Masking threshold — The masking threshold is the sound pressure level of a sound needed to make the sound perceptible in the presence of another noice, called a masker . This threshold depends upon the frequency, the kind of masker, and the kind of sound being… …
7Class-size reduction — As an education reform, the broad goal of class size reduction (CSR) is to increase the number of individualized student teacher interactions intended to improve student learning. A reform long holding theoretical attraction to many… …
8Absolute threshold — In neuroscience and psychophysics, an absolute threshold is the smallest detectable level of a stimulus. For example, in an experiment on sound detention, researchers may present a sound with varying levels of volume. The smallest level that a… …
9minimum stock size threshold — the minimum size of the stock that is required to produce maximum sustainable yield, below which the stock would be considered overfished. Abbreviated as Bthreshold …
10erythema threshold — the size of the radiation dose that is required to cause erythema of the skin …
