Delta neutral — In finance, delta neutral describes a portfolio of related financial securities, in which the portfolio value remains unchanged due to small changes in the value of the underlying security. Such a portfolio typically contains options and their… … Wikipedia
Delta-sigma modulation — Delta sigma (ΔΣ; or sigma delta, ΣΔ) modulation is a method for encoding high resolution or analog signals into lower resolution digital signals. The conversion is done using error feedback, where the difference between the two signals is… … Wikipedia
Zero Moment Point — is a concept related with dynamics and control of legged locomotion, e.g., for humanoid robots. It specifies the point with respect to which dynamic reaction force at the contact of the foot with the ground does not produce any moment, i.e. the… … Wikipedia
Zero-forcing precoding — Zero forcing (or Null Steering) precoding is a spatial signal processing by which the multiple antenna transmitter can null multiuser interference signals in wireless communications. Regularized zero forcing precoding is enhanced processing to… … Wikipedia
Delta Pavonis — Observation data Epoch J2000 Equinox J2000 Constellation Pavo Right ascension 20h 08m 43.6084s[1] … Wikipedia
Delta switching — Delta switching, also known as avulsion, is the process by which some rivers such as the Mississippi River change their course near their deltas. The flow of a river is controlled by its gradient, which decreases as it nears the ocean, becoming… … Wikipedia
Delta potential — The delta potential is a potential that gives rise to many interesting results in quantum mechanics. It consists of a time independent Schrödinger equation for a particle in a potential well defined by a Dirac delta function in one dimension. For … Wikipedia
Delta Squad — This article is about military unit in Star Wars. For military unit in Gears of War, see List of Gears of War characters adversaries#Delta Squad. Not to be confused with Delta Force. Delta Squad Delta Squad is the designation of a group of… … Wikipedia
Delta potential well — The Delta potential well is a common theoretical problem of quantum mechanics. It consists of a time independent Schrödinger equation for a particle in a potential well defined by a delta function in one dimension.DefinitionThe time independent… … Wikipedia
Delta method — In statistics, the delta method is a method for deriving an approximate probability distribution for a function of an asymptotically normal statistical estimator from knowledge of the limiting variance of that estimator. More broadly, the delta… … Wikipedia