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Experimental element which is not changed throughout the experiment
A control variable (or scientific constant) in scientific experimentation is an experimental element which is constant (controlled) and unchanged throughout
Control_variable
Binning data according to measured values of the variable
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
Controlling_for_a_variable
Concept in mathematical modeling, statistical modeling and experimental sciences
variables, on the other hand, are not seen as depending on any other variable in the scope of the experiment in question. Rather, they are controlled
Dependent and independent variables
Dependent_and_independent_variables
Variable structure control (VSC) is a form of discontinuous nonlinear control. The method alters the dynamics of a nonlinear system by application of
Variable_structure_control
Control loop feedback mechanism
a control variable u ( t ) {\displaystyle u(t)} , such as the opening of a control valve, to a new value determined by a weighted sum of the control terms
PID_controller
Topics referred to by the same term
Look up Variable, variable, or variables in Wiktionary, the free dictionary. Wikiversity has learning resources about Variable Variable may refer to:
Variable
Automobile variable valve timing technology
VVC (Variable Valve Control) is an automobile variable valve timing technology developed by Rover and applied to some high performance variants of the
Variable_Valve_Control
How software progresses through its implementation
In software, control flow (or flow of control) describes how execution progresses from one command to the next. In many contexts, such as machine code
Control_flow
Automobile variable valve timing technology
Variable Valve Timing & Lift Electronic Control (VTEC) is a valve system developed by Honda to improve the volumetric efficiency of a four-stroke internal
VTEC
Methods employed to reduce error in science tests
scientific control is an element of an experiment or observation designed to minimize the influence of variables other than the independent variable under
Scientific_control
Named container for a particular type of data
Alternatively, a variable with dynamic scope is resolved at run-time, based on a global binding stack that depends on the specific control flow. Variables only accessible
Variable (high-level programming language)
Variable_(high-level_programming_language)
User-definable variable associated with each running process in many operating systems
environment variable is a user-definable value that can affect the way running processes will behave on a computer. Environment variables are part of
Environment_variable
Binary feedback controller
example of a bang–bang control signal. Due to the discontinuous control signal, systems that include bang–bang controllers are variable structure systems,
Bang–bang_control
Type of adjustable-speed drive
drive, variable voltage variable frequency drive, VVVF drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed
Variable-frequency_drive
System that manages the behavior of other systems
control a process or operation. The control system compares the value or status of the process variable (PV) being controlled with the desired value or setpoint
Control_system
Fundamental building block of control systems
and the final control element (FCE) which controls the process necessary to automatically adjust the value of a measured process variable (PV) to equal
Control_loop
Internal combustion engine technology
In internal combustion engines, a variable-length intake manifold (VLIM),variable intake manifold (VIM), or variable intake system (VIS) is an automobile
Variable-length intake manifold
Variable-length_intake_manifold
Topics referred to by the same term
"confounding variables" are minimised to reduce error Control variables, variables which are kept constant during an experiment Biological pest control, a natural
Control
Terminology of mechanical respiration
that stops it. The target variable should not be confused with the cycle variable or the control variable. The target variable only sets an upper limit
Nomenclature of mechanical ventilation
Nomenclature_of_mechanical_ventilation
Branch of engineering and mathematics
process variable, called the error signal, or SP-PV error, is applied as feedback to generate a control action to bring the controlled process variable to
Control_theory
Advanced method of process control
{\displaystyle i} th controlled variable (e.g. measured temperature) r i {\displaystyle r_{i}} : i {\displaystyle i} th reference variable (e.g. required temperature)
Model_predictive_control
Automotive transmission technology
A continuously variable transmission (CVT) is an automatic transmission that can change through a continuous range of gear ratios, typically resulting
Continuously variable transmission
Continuously_variable_transmission
Function used in optimal control theory
a vector of control variables. Once initial conditions x ( t 0 ) = x 0 {\displaystyle \mathbf {x} (t_{0})=\mathbf {x} _{0}} and controls u ( t ) {\displaystyle
Hamiltonian_(control_theory)
Probabilistic optimal control
observation of the state variables. Stochastic control aims to design the time path of the controlled variables that performs the desired control task with minimum
Stochastic_control
Control paradigm in which errors are measured before they can affect a system
system itself may vary unpredictably. In a feed-forward system, the control variable adjustment is not error-based. Instead it is based on knowledge about
Feed_forward_(control)
Value of a given part of a monitored or controlled process
In control theory, a process variable (PV; also process value or process parameter) is the current measured value of a particular part of a process which
Process_variable
Psychological theory
Perceptual control theory (PCT) is a model of behavior based on the properties of negative feedback control loops. A control loop maintains a sensed variable at
Perceptual_control_theory
Method in nonlinear control theory
in the state space. Hence, sliding mode control is a variable structure control method. The multiple control structures are designed so that trajectories
Sliding_mode_control
Capacitor whose capacitance can be changed
tuning condenser), or as a variable reactance, e.g. for impedance matching in antenna tuners. In mechanically controlled variable capacitors, the distance
Variable_capacitor
Science and research term
etc.). Attributes are closely related to variables. A variable is a logical set of attributes. Variables can "vary" – for example, be high or low. How
Variable and attribute (research)
Variable_and_attribute_(research)
Linear feedback control system
control, in engineering and process control, is a type of linear feedback control system in which a correction is applied to the controlled variable,
Proportional_control
Limits to safe impact on the Earth ecology
very small increment for a control variable (like CO2) triggers a larger, possibly catastrophic, change in the response variable (global warming) through
Planetary_boundaries
Statistical technique to use observational data for causal analysis
versus a "control group" in a natural experiment. It calculates the effect of a treatment (i.e., an explanatory variable or an independent variable) on an
Difference_in_differences
Target value for the process variable of a control system
and control theory, a setpoint (SP; also set point) is the desired or target value for an essential variable, or process value (PV) of a control system
Setpoint_(control_system)
Mathematical way of attaining a desired output from a dynamic system
criterion is achieved. A control problem includes a cost functional that is a function of state and control variables. An optimal control is a set of differential
Optimal_control
Variables Control
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
Control (optimal control theory)
Control_(optimal_control_theory)
Airplane wings capable of changing position to alter their geometry
with a variable wing. No other control surfaces were needed. Subtle movements of the wings were able to induce the small deflections which controlled the
Variable-sweep_wing
Radio frequency absorption
overcome the effects of rain fade are site diversity, uplink power control, variable rate encoding, and receiving antennas larger than the requested size
Rain_fade
Reciprocating internal combustion engine
balancer shafts instead of machined-in bearing surfaces, computer-controlled variable oil and water pumps, a split circuit cooling system enabling fast
Ingenium_engine_family
Bias in causal inference
and detect confounding, making it possible to identify when a variable must be controlled for in order to obtain an unbiased estimate of a causal effect
Confounding
Technique for increasing the precision of estimates in Monte Carlo experiments
is also known as regression sampling. When the expectation of the control variable, E [ t ] = τ {\displaystyle \mathbb {E} \left[t\right]=\tau } , is
Control_variates
based on three key attributes: the control variable, the breath sequence, and the targeting scheme. The control variable is the parameter directly regulated
Modes of mechanical ventilation
Modes_of_mechanical_ventilation
Feedback controller
sensors, control algorithms, and actuators is arranged in an attempt to regulate a variable at a setpoint (SP). An everyday example is the cruise control on
Closed-loop_controller
Graphic techniques used in visual design
A visual variable, in cartographic design, graphic design, and data visualization, is an aspect of a graphical object that can visually differentiate it
Visual_variable
Automotive piston engine technology
When used in conjunction with variable valve timing (VVT), variable valve lift can potentially offer infinite control over the intake and exhaust valve
Variable_valve_lift
Design of tasks
dependent variables, also referred to as "output variables" or "response variables." The experimental design may also identify control variables that must
Design_of_experiments
Control systems and control theory based on negative feedback
control are control systems and control theory based on negative feedback for producing a control signal to maintain the controlled process variable (PV)
Linear_control
Process of altering the timing of a valve lift event
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
Variable_valve_timing
High-level programming language
variable number of arguments (are variadic). Everything can be dynamically redefined and overridden. Actually, there are no keywords, so even control
Tcl_(programming_language)
Automobile variable valve timing technology
Variable camshaft timing (VCT) is an automobile variable valve timing technology developed by Ford. It allows for more optimum engine performance, reduced
Variable_camshaft_timing
Variable capable of taking on a limited number of possible values
In statistics, a categorical variable (also called qualitative variable) is a variable that can take on one of a limited, and usually fixed, number of
Categorical_variable
Data table used to control program flow
the number of distinct program states is small, a "dense sequence" control variable can be used to efficiently dictate the entire flow of the main program
Control_table
Type of statistical variable
In statistics, bad controls are variables that introduce an unintended discrepancy between regression coefficients and the effects that said coefficients
Bad_control
Propeller with blades that can be rotated to control their pitch while in use
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
Variable-pitch propeller (marine)
Variable-pitch_propeller_(marine)
Computer programming language
The TO expression is evaluated and compared against the value of the control variable, prior to each iteration, and the loop is terminated if it evaluates
Harbour (programming language)
Harbour_(programming_language)
Electronic amplifier that varies its gain depending on a control voltage
A variable-gain (VGA) or voltage-controlled amplifier (VCA) is an electronic amplifier that varies its gain depending on a control voltage (often abbreviated
Variable-gain_amplifier
The term Variable Control Voice Actuator (VCVA) refers to a digital recording technology developed by Olympus, which is implemented in many of their digital
Variable Control Voice Actuator
Variable_Control_Voice_Actuator
Quantity used to describe the mathematical state of a dynamical system
A state variable is one of the set of mathematical variables that are used to describe the "state" of a system, e.g. of a dynamical system or a thermodynamical
State_variable
Font file with many design variants
platforms. Variable fonts should not be confused with variable-width fonts. A variable font may be either variable-width or fixed-width. OpenType variable fonts
Variable_font
Technique in statistics
quasi-experimental method of instrumental variables (IV) is used to estimate causal relationships when controlled experiments are not feasible or when a
Instrumental_variables
Multiple ways for multi-joint objects to realize a movement
studies investigate which variables the nervous system controls, which variables are less tightly controlled, and how this control is implemented. Common
Degrees_of_freedom_problem
Control flow construct for executing code repeatedly
transforming it into a new list.[citation needed] A loop counter is a control variable that controls the iterations of a loop. Loop counters change with each iteration
Loop_(statement)
Electronic module
Modulation Variable-speed air compressor Vector control (motor) Motor controller Adjustable-speed drive Electronic speed control Variable-frequency drive
Voltage_controller
Statistical matching technique
attempts to control for these biases by making the groups receiving treatment and not-treatment comparable with respect to the control variables. PSM employs
Propensity_score_matching
Japanese 2D fighting game/eroge series
Variable Geo (ヴァリアブル・ジオ, Variaburu Jio), also known as V.G., is a Japanese 2D fighting game and eroge series developed and published by TGL for consoles
Variable_Geo
Use of various control systems for operating equipment
described a number of automatic controls. Two-step level controls for fluids, a form of discontinuous variable structure controls, were developed by the Banu
Automation
Type of turbocharging technology
Variable-geometry turbochargers (VGTs), occasionally known as variable-nozzle turbochargers (VNTs), are a type of turbochargers, usually designed to allow
Variable-geometry turbocharger
Variable-geometry_turbocharger
Facet of ballistics and aeronautics
with pitch-only control. Variable nozzle A thrust-vectoring nozzle of variable geometry maintaining a constant, or allowing a variable, effective nozzle
Thrust_vectoring
Dynamic system property
values of the control variables (those whose values can be chosen) are known. Complete state controllability (or simply controllability if no other context
Controllability
Automobile variable valve timing technology
Toyota (Valvematic). Nissan Continuous Variable Valve Timing Control Nissan Variable Cam Timing Nissan Variable Valve Lift and Timing Nissan press release
Variable_Valve_Event_and_Lift
Combustion engine technology
Variable displacement is an automobile engine technology that allows the engine displacement to change, usually by deactivating cylinders, for improved
Variable_displacement
Piece of machine equipment
motor drive. A variable-frequency drive (VFD) or variable-speed drive (VSD) describes the electronic portion of the system that controls the speed of the
Motor_drive
In telecommunications, a variable length buffer or elastic buffer is a buffer into which data may be entered at one rate and removed at another rate without
Variable-length_buffer
A suppressor variable is a variable that increases the predictive validity of another variable when included in a regression equation. Suppression can
Suppressor_variable
Topics referred to by the same term
mathematics, such as π or e Control variable or scientific constant, in experimentation the unchanging or constant variable Physical constant, a physical
Constant
Physicist and biotechnologist
rejuvenation. Thermodynamic control variables. Work led by Fedichev introduced a small set of macroscopic control variables for aging, including an organism-level
Peter_Fedichev
Files in which the rate of bit transmission is non-constant
Variable bitrate (VBR) is a term used in telecommunications and computing that relates to the bitrate used in sound or video encoding. As opposed to constant
Variable_bitrate
2D graphic with logarithmic scales on both axes
data are gathered by varying the control variable along an exponential function, in which case the control variable x is more naturally represented on
Log–log_plot
Type of web vulnerability
path to executable code using an attacker-controlled variable in a way that allows the attacker to control which file is executed at run time. A file
File_inclusion_vulnerability
Methods of approximating line segments for pixel displays
additional control variable that is initialized with the value 0.5. m {\displaystyle m} is added to this variable on every iteration. Then, if this variable exceeds
Line_drawing_algorithm
Type of electronic amplifier
function between the source variable and the inner variable, xi when the controlled variable xj is set to zero (i.e., when the control parameter, P is set to
Negative-feedback_amplifier
Computerized control system with distributed decision-making
like paper machines and their associated quality controls, variable speed drives and motor control centers, cement kilns, mining operations, ore processing
Distributed_control_system
Heating or air-conditioning system
Variable air volume (VAV) is a type of heating, ventilating, and/or air-conditioning (HVAC) system. Unlike constant air volume (CAV) systems, which supply
Variable_air_volume
Highly polymorphic DNA region
mitogenome, the most variable sites of HVR1 are numbered 16024-16383 (this subsequence is called HVR-I), and the most variable sites of HVR2 are numbered
Hypervariable_region
Necessary condition for optimality associated with dynamic programming
their state variables, but there would probably be others. The variables chosen at any given point in time are often called the control variables. For instance
Bellman_equation
Equipment for controlling the buoyancy of a diver
pressure space. Such variable buoyancy pressure vessels are used by submersibles and submarines for fine buoyancy and trim control. Water from the surroundings
Buoyancy_compensator_(diving)
Propeller with blades that can be rotated to control their pitch while in use
In aeronautics, a variable-pitch propeller is a type of propeller (airscrew) with blades that can be rotated around their long axis to change the blade
Variable-pitch propeller (aeronautics)
Variable-pitch_propeller_(aeronautics)
Programming statement for branching control based on a value
is a selection control flow mechanism that changes execution control based on the value of an expression (i.e. evaluation of a variable). A switch statement
Switch_statement
Sum of marginal costs over all units produced
Variable costs are costs that change as the quantity of the good or service that a business produces changes. Variable costs are the sum of marginal costs
Variable_cost
Stabilization, by means of small system perturbations, of unstable periodic orbits
tissues. attempt the control of chaotic bubbling with the OGY method and using electrostatic potential as the primary control variable. Forcing two systems
Control_of_chaos
Type of automotive suspension
Soarer: world first Electronically controlled (TEMS) that used a shock absorber control actuator (spring constant, variable attenuation force) installed 1985:
Active_suspension
Automotive technology
the Ford Escort and Mercury Tracer feature an Intake Manifold Runner Control variable geometry intake manifold. General Motors: 3.9L LZ8/LZ9 V6, 3.2L LA3
Inlet_manifold
Air conditioning system that allows for individual control of spaces
Variable refrigerant flow (VRF), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. Daikin Industries, Ltd. named this "VRV" and holds
Variable_refrigerant_flow
Method to control electric motors
Field-oriented control (FOC), also called vector control, is a variable-frequency drive (VFD) control method in which the stator currents of a three-phase
Field-oriented_control
Branch of engineering studying process variables
Instrumentation and control engineering (ICE) is a branch of engineering that studies the measurement and control of process variables, and the design and
Instrumentation and control engineering
Instrumentation_and_control_engineering
Family of control systems
ρ ) {\displaystyle r-y^{(1)}(\rho )} such that it is summed to the control variable output by C ( ρ ) {\displaystyle C(\rho )} , going as input into the
Data-driven_control_system
sin x {\displaystyle \sin x} about 0. In the following code, the control variable r takes values from 0 through 5 in steps of 1, df is the REDUCE differentiation
Reduce (computer algebra system)
Reduce_(computer_algebra_system)
Nonlinear equation which arises on linear optimal control problems
vector of state variables, u is a k × 1 vector of control variables, A is the n × n state transition matrix, B is the n × k matrix of control multipliers
Algebraic_Riccati_equation
Reciprocating internal combustion engine
Electronically controlled variable displacement oil pump Intake: electronic variable valve timing Control (VTC) Exhaust: hydraulic continuously variable VTC Fuel
Nissan_VR_engine
Variable representing a random phenomenon
A random variable (also called random quantity, aleatory variable, or stochastic variable) is a mathematical formalization of a quantity or object which
Random_variable
CONTROL VARIABLE
CONTROL VARIABLE
Boy/Male
Hindu
Check, Control
Girl/Female
Tamil
Self control having complete control on all the senses
Boy/Male
Hindu, Indian, Sanskrit
Under Control
Boy/Male
Hindu, Indian, Sanskrit
Agree; Control
Boy/Male
Gujarati, Hindu, Indian, Punjabi, Sikh
Master; Authority; Power; Control
Girl/Female
Hindu, Indian
To have Control
Boy/Male
Gaelic Irish Celtic
Wise.
Surname or Lastname
English (mainly central England)
English (mainly central England) : patronymic from a pet form of the personal name Thomas.
Boy/Male
Indian, Sanskrit
Control of the Senses; Self-control
Male
English
Wise Man
Boy/Male
Italian Spanish
Mountain. Abbreviation of Montague and Montgomery.
Boy/Male
Muslim/Islamic
Always in control
Boy/Male
Tamil
Check, Control
Boy/Male
Hindu, Indian
Control
Boy/Male
Indian
Control; Patient
Boy/Male
Indian, Sikh
Who Control Love
Girl/Female
Hindu, Indian
Self Control; Having Complete Control on All the Senses
Boy/Male
Muslim
Prince, Always in control
Boy/Male
Gujarati, Hindu, Indian
Self Control
Boy/Male
Indian, Punjabi, Sikh
Light of Control
CONTROL VARIABLE
CONTROL VARIABLE
Male
Hungarian
Pet form of Hungarian László, LACI means "rules with glory."
Boy/Male
Tamil
Harinitha | ஹரிநீதா
Carried by Lord Vishnu
Female
English
Variant spelling of English Dahlia, DALYA means "dahlia flower."
Male
French
Norman French form of Scandinavian Eutha, EUDO means "child." This name and its variants are sometimes confused with Odo, Otto, and Audo.Â
Boy/Male
Arabic, Muslim, Pashtun
Herder
Boy/Male
Muslim
A prophets name, Fiery Lord
Boy/Male
Hindu, Indian
Father of Snakes
Boy/Male
Tamil
Girl/Female
Muslim
Universe
Boy/Male
Indian, Sanskrit
Part of Lotus
CONTROL VARIABLE
CONTROL VARIABLE
CONTROL VARIABLE
CONTROL VARIABLE
CONTROL VARIABLE
n.
A counter account. See Control.
adv.
In an independent manner; without control.
v. t.
To exercise restraining or governing influence over; to check; to counteract; to restrain; to regulate; to govern; to overpower.
n.
One who, or that which, controls or restraines; one who has power or authority to regulate or control; one who governs.
n.
A duplicate book, register, or account, kept to correct or check another account or register; a counter register.
v. i.
To control one's self when provoked.
v. t.
To restrain; to control; to check.
n.
Control of one's self; restraint exercised over one's self; self-command.
n.
Power or authority to check or restrain; restraining or regulating influence; superintendence; government; as, children should be under parental control.
n.
Control over one's own feelings, temper, etc.; self-control.
n.
Exercise of authority; control; government; arrangement.
imp. & p. p.
of Control
v. t.
To check by a counter register or duplicate account; to prove by counter statements; to confute.
n.
That which serves to check, restrain, or hinder; restraint.
superl.
Difficult to resist or control; powerful.
n.
Rule; dominion; control.
p. pr. & vb. n.
of Control
n.
Disposal; control; license.
n. & v.
See Control.
n.
Authority; jurisdiction; control.