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Topic: Control variable

	The POWERMUTT Project: Control Variables
		Controlling for the third variable will tend to cause the original relationship (insofar as it is spurious) to disappear.
		In other words, he was hypothesizing that the independent variable (the presence or absence of McDonald’s) and the dependent variable (war or peace) are spuriously related — that one does not cause the other, but that both are products of economic development, and that the control variable, economic development, “explains” their relationship.
		In the latter, the control variable is an
	www.csupomona.edu /~jlkorey/POWERMUTT/Topics/control_variables.html (1866 words)

	Patent 4791548
		The normal-condition control function block 8 is supplied with the preset value from the switch 10 and the sampled controlled value from the switch 5, and also with a discrete-time model parameter estimated by the ASC function block 7, as described later on.
		Since control under the transient condition is effected until a predicted future controlled variable y(k) reaches the new target value w.sub.2, it is sufficient to determine the position of a limit y.sub.ex for the controlled variable for prediction.
		As the control variable yi is increased, and at a time when the deviation y.sub.d is 0.5% of the full control range, the changeover switches 5, 10, 11 are operated by the control function switching mechanism 6 to select input and output signals of the normal-condition control function block 8.
	www.freepatentsonline.com /4791548.html (3718 words)

	AC Motor Speed Control, Fan Control, Fan Speed Control, Variable Frequency Drive, Frequency Inverter
		The SmartFan Nimbus is capable of controlling small AC pumps based on a control signal (0-10 VDC, 0-20 mA), remote transducer or temperature sensor input.
		Here at Control Resources, we use our own Nimbus fan control to sense heat from our wavesolder and reflow ovens, turn a duct fan on or off automatically and vary fan speed to reduce HVAC costs and increase fan life.
		All of Control Resources' AC Controls, SmartFan AC-VX, Nimbus and Inversion can be used in electronics cooling applications to regulate air mover speed to control temperature and reduce acoustical noise.
	www.controlres.com /ac.htm (540 words)

	chart control variable (Site not responding. Last check: 2007-11-02)
		Using a Color Variable in a Chart Control.
		Variable Control Charts in InfinityQS SPC X-Bar - The X-Bar or subgroup average chart is used when the number of items included in a subgroup is...
		New registrations grew by 26% in Bosnia and Herzegovina, 16% in Colombia and 14% in Russia.
	variable.w50.info /chart-control-variable (336 words)

	Patent 5347446
		By the control operation unit 20, a future value of a controlled variable is predicted by using a model which will be described later to calculate an optimal manipulated variable to minimize the cost function in a quadratic form while satisfying the limit condition.
		The equation (14a) corresponds to upper and lower limiter of the controlled variable, the equation (14b) corresponds to a change rate limiter of the manipulated variable, the equation (14c) corresponds to upper and lower limiter of the controlled variable, and the equation (14d) corresponds to a change rate limiter of the controlled variable.
		Since the controlled system 40 is operated in accordance with a manipulated value j.sub.k which satisfies the limit condition relating to the controlled variable y as well, a control in which both limit conditions of the manipulated value and the controlled value are taken into consideration can be conducted.
	www.freepatentsonline.com /5347446.html (15995 words)

	Controls (Site not responding. Last check: 2007-11-02)
		Control variables that are related to both the independent and dependent variable are used to investigate possible confounding relationships.
		At least one of the control relationships is different than the original bivariate relationship while all the relationships for different values of the control variable are not the same.
		Some control variables are not related to either the independent or dependent variable, or at most are related to only one of them.
	www.usca.edu /polisci/apls301/Controls.htm (1527 words)

	Variable Speed Control Modification to the Futaba S3003 RC Servo
		The Radio Controlled (RC) servo is an ingenious device that allows remote, proportional actuation of mechanisms by the simple movement of a lever on a controller or the software of a robot.
		Unfortunately, the hacked servo circuit has a very narrow input control range and is difficult to impossible to speed control accurately, though it has adequate speed and torque.
		The main cause of this problem is that while the existing speed control feedback level is adequate for normal position servo stabilization, it is insufficient to match the 1 mS (1-2 mS) input pulse width variation when the servo is used as a drive motor.
	www.seattlerobotics.org /encoder/200009/S3003C.html (1720 words)

	Variable Control Charts Define - The best control products, sites and information on the web today!
		control limits for mean variable control charts, including mean and median range charts, and p, np, u, and c charts.
		Variable control charts are for continuous variables that can be measured, such as weight or volume...
		Control chart dialog box you define the data to be represented in the quality control chart.
	control.epcgold.com /index.php?k=variable-control-charts---define (993 words)

	Avoid GetDlgItem
		Whereas if you use control variables, all you do is change the variable type in the declaration, and all the overloading and inheritance work correctly.
		I only need value variables for controls whose values are passed into the dialog from outside, or which are passed back to the caller.
		This indicates that it is a control variable.
	www.flounder.com /getdlgitem.htm (2073 words)

	Control Variable (Site not responding. Last check: 2007-11-02)
		Nonetheless, you may wish to examine a relationship between independent and dependent variables in the historic, country-level data after applying a control variable.
		We use a control variable to "explain" as much as possible about the behavior of both independent and dependent variables and then we examine the relationship between the residuals of the independent and dependent variables.
		In order to apply a control variable, you need to know the relationship between the control variable and both independent and dependent variables.
	www.du.edu /~bhughes/WebHelpIFs/ifshelp/control_variable.htm (203 words)

	PV as a leading control variable in Var
		The process of variational data assimilation can be described as the task of adjusting a model state vector in view of gaining optimal consistency simultaneously with (i) a background state and (ii) a set of observations, relevent to some time window.
		The whole process is achieved by minimizing a cost function that penalizes misfit between the state vector variable and the background, and the state vector's 'prediction' of the observations and the observations themselves (plus costs that penalize departure from the other conditions imposed).
		Our leading control variable related to PV is better suited to bescribe the balanced part of the flow than is the streamfunction.
	www.met.rdg.ac.uk /~ross/DARC/PVcv/PVcv.html (1663 words)

	SCR Power Control Products
		Model 18D: Single Phase, Variable Voltage Control for Constant Resistance Loads.
		Model 18D-N: Single Phase, Variable Voltage SCR Control for Constant Resistance Loads.
		Model 18E: Three Phase, Variable Voltage Control for Constant Resistance Loads.
	www.payneng.com /prod1.htm (278 words)

	Control Charts / Statistical Process Control (SPC)
		Variables data is often referred to as continuous data, while attribute data is often called discrete data.
		The tedious task of analyzing control charts for validity of the limits can be eliminated and the resulting report can be used as a tool to keep the process of continuous improvement on track.
		When special control strategies are applied to typical process data, the observed relationship between Z(short-term) and Z(long-term) is reproduced, and a relationship to estimate Z(short-term) from Z(long-term, discrete) from defect counts is derived.
	www.isixsigma.com /st/control_charts (913 words)

	The Nilfisk Variable Speed Control
		The Museum Compatible GM 80 with Variable Speed Control
		The Museum Compatible GM 80 with Variable Speed Control comes standardly equipped with the variable speed control, and the micro tool kit.
		Ideal for gentle cleaning, the GM 80 with Variable Speed Control preserves rare books for generations to enjoy.
	www.kingvacuum.com /products-variable-speed-museum.htm (74 words)

	Declaring the Control Variable Within the for Loop (Site not responding. Last check: 2007-11-02)
		In all of the previous examples, the control variable was declared before the
		You should never modify the control variable within the body of the loop.
		The value of the control variable after the loop is the value that made the terminating condition FALSE.
	home.pacifier.com /~mmead/cs161/lesson09_07.html (123 words)

	Process Automation \| Bumpless switching of most open valves \| Control Global
		For example, one of the valves was for HP feedwater and was part of the three element feedwater control loop and one of the valves was for attemperation and was part of a temperature control loop with a much smaller flow.
		As the 3rd part of my column on pump controls in the March 2005 issue points out, one really needs to have a full understanding of the pump characteristics, process dynamics, valve and positioner characteristics, to be sure that the system will be stable and efficient for sure.
		The active control signal between the group VPC (HP and IP feedwater valve position) and the override VPCs is simply the greatest of the outputs.
	www.controlglobal.com /articles/2005/576.html (1082 words)

	Looping with a control variable
		: loops are used to provide loops in which a control integer varies, and where the control integer is accessible to the user.
		In general, if the stepping value is positive then the loop continues whilst the control variable has a value not exceeding I3.
		An example of the use of this form of the syntax is as follows.
	fourier.dur.ac.uk /stats/bd/online/node37.html (497 words)

	eBay Store - Friesen Electric: AC Motor Control: Remote Keypad for SCM AC Tech Drives (Site not responding. Last check: 2007-11-02)
		ACTech SM210 Variable Speed Control 1 HP 3 Phase 230V
		ACTech SM215 Variable Speed Control 1.5 HP 3 Phase 230V
		ACTech SM410 Variable Speed Control 1 HP 3 Phase 480V
	stores.ebay.com /Friesen-Electric_AC-Motor-Control_W0QQcolZ2QQdirZ1QQftidZ2QQtZkm (303 words)

	Variable Structure Control of Systems With Nonlinear Friction (ResearchIndex)
		The method is based on a multi-state backstepping approach to variable structure control design.
		Stability and robustness properties are investigated and an example is given.
		Keywords: nonlinear robust control, variable structure control, backstepping, nonlinear friction, electro-mechanical systems.
	citeseer.ist.psu.edu /437244.html (321 words)

	Variable Speed Control Instructions
		The VSC that comes with Flex-a-lite's line of large electric dual fans I now available as a separate universal kit, for whatever your electric fan project might be.
		Manual control of the VSC can now be handled by a single switch giving you the ability to override all functions with 100%-Speed ON or OFF regardless of thermostatic or AC inputs.
		One of the improvements of the Variable Speed Control is its soft-start feature that prevents the fans from drawing a large surge when they spin up.
	www.flex-a-lite.com /auto/html/vsc.html (904 words)

	Ebugs.us Pest Control Bug Control Mole Control
		We are happy to provide a link to the Ultimate Search Engine for Pest Controls and Other Products.
		Independent laboratory testing has proven YardGard sound technology to be a highly effective form of pest control.
		Variable distance sensitivity (up to 30') as well as volume control.
	www.ebugs.us (929 words)

	Ac motor variable speed control Information (Site not responding. Last check: 2007-11-02)
		Ac Motor Variable Speed Control are great for when you're looking to get better at ac motor variable speed control for selfish purposes.
		If you need help locating ac motor variable speed control then you've come to the right place because we have all the ac motor variable speed control you could want.
		Your source for fan controls, fan speed controls, variable frequency drives and frequency inverters...
	ac.8greatsite.info /ac-dc-live/ac-motor-variable-speed-control.html (377 words)

	Assignment 4: Crosstabulations with a Control Variable
		In this assignment, you'll use the SDA system and the General Social Survey to see how a control variable may (or may not) alter the original correlation between two variables.
		Obviously this is not a problem if one of your variables is nominal in the cross-tab table but it could be a problem if both your variables are at least ordinal.
		However, in other variable codings (e.g., the top left-hand cell is "high-low"), the sign of the correlation coefficient may be reversed and the analyst must change the signs of the correlation coefficients.
	edf5400-01.fa04.fsu.edu /Assignment4.html (3353 words)

	Wireless Microphones and Fitness Sound Systems by Supreme Audio - Our experience makes the difference. Largest ...
		Largest selection of complete fitness sound systems, dance sound systems, sweat-proof and waterproof wireless microphones, headset mikes variable speed pitch control CD players, variable speed pitch control tape decks, amplifiers, speakers, mixers, portable sound systems.
		Due to fiscal year-end on Sunday, September 30, 2007, orders received by Noon on Sunday will be processed with a 9/30/07 invoice date.
		variable speed pitch control CD players, variable speed pitch control tape decks, amplifiers, speakers, mixers and portable sound systems for the Dance and Fitness industry.
	www.supremeaudio.com (619 words)

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