models, controlling for a variable means binning data according to measured values of the variable. This is typically done so that the variable can no...

A control variable (or scientific constant) in scientific experimentation is an experimental element which is constant (controlled) and unchanged throughout...

A variable is considered dependent if it depends on an independent variable. Dependent variables are studied under the supposition or demand that they...

for steering a controllable system of state variables toward a desired goal Controlling for a variable in statistics Scientific control, an experiment...

A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable (i.e. confounding...

VTEC (described as Variable Valve Timing & Lift Electronic Control, but stands for Valve Timing Electronically Controlled) is a system developed by Honda...

In internal combustion engines, a variable-length intake manifold (VLIM),variable intake manifold (VIM), or variable intake system (VIS) is an automobile...

VVC (Variable Valve Control) is an automobile variable valve timing technology developed by Rover and applied to some high performance variants of the...

variable and a dependent variable via the inclusion of a third hypothetical variable, known as a mediator variable (also a mediating variable, intermediary...

and micro-climate. In horticulture, these environmental variables may be avoided, controlled or manipulated in an indoor growing environment. Plants require...

Instrumentation and control engineering (ICE) is a branch of engineering that studies the measurement and control of process variables, and the design and...

A variable-gain (VGA) or voltage-controlled amplifier (VCA) is an electronic amplifier that varies its gain depending on a control voltage (often abbreviated...

and the final control element (FCE) which controls the process necessary to automatically adjust the value of a measured process variable (PV) to equal...

environment in which a process runs. For example, a running process can query the value of the TEMP environment variable to discover a suitable location...

using a thermostat controlling a domestic boiler to large industrial control systems which are used for controlling processes or machines. The control systems...

Variable valve timing (VVT) is the process of altering the timing of a valve lift event in an internal combustion engine, and is often used to improve...

random variables, with the effect of a set of controlling random variables removed. When determining the numerical relationship between two variables of interest...

a part of many modern processors Kerrison Predictor, a military fire-control computer Predictor variable, also known as an independent variable A type...

A continuously variable transmission (CVT) is an automated transmission that can change through a continuous range of gear ratios. This contrasts with...

a confounder is a variable that influences both the dependent variable and independent variable, causing a spurious association. Confounding is a causal...

The term Variable Control Voice Actuator (VCVA) refers to a digital recording technology developed by Olympus, which is implemented in many of their digital...

inverter drive, variable voltage variable frequency drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed and torque...

In marine propulsion, a variable-pitch propeller is a type of propeller with blades that can be rotated around their long axis to change the blade pitch...

optimal control theory, a control is a variable chosen by the controller or agent to manipulate state variables, similar to an actual control valve. Unlike...

from a household thermostat controlling a boiler to a large industrial control system with tens of thousands of input measurements and output control signals...

Clinical trial Clinical study design Computer experiment Control variable Controlling for a variable Experimetrics (econometrics-related experiments) Factor...

process variables is essential in control systems to controlling a process. The value of the process variable is continuously monitored so that control may...

A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes systematically with time. This variation may be caused by...

A random variable (also called random quantity, aleatory variable, or stochastic variable) is a mathematical formalization of a quantity or object which...

two types of bad controls: a simple bad-control scenario and proxy-control scenario where the included variable partially controls for omitted factors...