single-variable
51Motor variable — A function of a motor variable is a function with arguments and values in the split complex number plane, much as functions of a complex variable involve ordinary complex numbers. The split complex numbers lie in the motor plane D, a term… …
52Control variable — For the notion of a controlled variable, see independent variable. The term control variable has different meanings, depending on the area/place in which it is used. The control variable is something that is constant and unchanged in an… …
53External variable — An external variable (keyword extern for C and C++ programming languages) is a variable declaration keyword used to signify that a global variable has been declared in another file, and is simply used within the file containing the extern keyword …
54Class variable — In object oriented programming with classes, a class variable is a variable defined in a class (i.e. a member variable) of which a single copy exists, regardless of how many instances of the class exist.[1][2][3] …
55NuVinci Continuously Variable Transmission — NuVinci internal mechanisms Tilting ball variator …
56State variable filter — A state variable filter is a type of active filter. It consists of one or more integrators, connected in some feedback configuration. Any LTI system can be described as a state space model, with n state variables for an nth order system. A state… …
57List of Ace single volumes — Ace Books began publishing genre fiction in 1952. Initially these were mostly in the attractive dos à dos format, but they also published a few single volumes, in the early years, and that number grew until the doubles stopped appearing in about… …
58CoSign single sign on — Developer(s) Research Systems Unix Group Operating system Cross platform Website …
59State variable topology — refers to filters with two pole filter topology. State variable filters are available in lowpass, highpass, bandpass, and notch versions. The notch version is not recommended, because it requires too many amplifiers. It is one of three topologies …
60History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …
