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Topic: Positive feedback

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	Feedback
		In every feedback loop, as the name suggests, information about the result of a transformation or an action is sent back to the input of the system in the form of input data.
		Positive feedback leads to divergent behavior: indefinite expansion or explosion (a running away toward infinity) or total blocking of activities (a running away toward zero).
		In some cases the goal is self-determined and is preserved in the face of evolution: the system has produced its own purpose (to maintain, for example, the composition of the air or the oceans in the ecosystem or the concentration of glucose in the blood).
	pespmc1.vub.ac.be /FEEDBACK.html (420 words)

	Feedback - find information about Feedback at BigServing.com (Site not responding. Last check: )
		Negative feedback is often deliberately introduced to increase the stability and accuracy of a system, as in the feedback amplifier invented by Harold Stephen Black.
		Positive feedback amplifies possibilities of divergences (evolution, change of goals); it is the condition to change, evolution, growth; it gives the system the ability to access new points of equilibrium.
		For example, in an organism, most positive feedbacks provide for fast autoexcitation of elements of endocrine and nervous systems (in particular, in stress responses conditions) and play a key role in regulation of morphogenesis, growth, and development of organs, all processes which are in essence a rapid escape from the initial state.
	www.bigserving.com /bigserving/feedback.htm (3165 words)

	Positive feedback - Wikipedia, the free encyclopedia
		Positive feedback is a feedback system in which the system responds to the perturbation in the same direction as the perturbation (It is sometimes referred to as cumulative causation).
		Feedback is the process of sampling a part of the output signal and applying it back to the input.This technique is useful to change the parameters of an amplifier like voltage gain,input and output impedance,stability and bandwidth.
		Feedback is said to be positive if any increase in the output signal results in a feedback signal which on being mixed with the input signal caused further increase in the magnitude of the output signal.
	en.wikipedia.org /wiki/Positive_feedback (876 words)

	Gamasutra - Features - "Balancing Games with Positive Feedback" [01.04.02]
		If the role of positive feedback in a game is too great, then whoever first obtains the slightest lead in the game is guaranteed to win, because they just keep getting farther and farther ahead.
		Positive feedback appears mostly in games in which the victory condition is defined in numeric terms, and throughout the game you're working to achieve that victory condition by accumulating something.
		Positive feedback needn't have a direct influence on the path to victory; it can appear in other areas of a game as well.
	www.gamasutra.com /features/20020104/adams_01.htm (1535 words)

	Interactions, Feedback Loops, and Arctic Weather Patterns
		In the climate system a "feedback loop" refers to a pattern of interacting processes where a change in one variable, through interaction with other variables in the system, either reinforces the original process (positive feedback) or suppresses the process (negative feedback).
		The temperature—albedo feedback is positive because the initial temperature change is amplified.
		Feedbacks between temperature, cloud cover and radiation are potentially important agents of climate change.
	nsidc.org /arcticmet/patterns/feedback_loops.html (381 words)

	Positive Feedback
		Feedback is the message, from a sensor of a system to the controller of the system, of the difference between expectation and performance.
		Positive feedback, out of balance with negative feedback, leads to instability in a system; unchecked, it leads to increasing oscillation and, ultimately, breakdown due to exceeding the limits of the system.
		Feedback in mechanical systems is relatively straight forward; even so, we are now building systems of such complexity and scale that providing adequate feedback is a serious design issue.
	www.matttaylor.com /public/feedback_positive.htm (641 words)

	Positive Feedback - Operational Amplifiers
		Unlike negative feedback, where the output voltage is "fed back" to the inverting (-) input, with positive feedback the output voltage is somehow routed back to the noninverting (+) input.
		Another application of positive feedback in op-amp circuits is in the construction of oscillator circuits.
		Oscillation occurs because the positive feedback is instantaneous and the negative feedback is delayed (by means of an RC time constant).
	www.opamp-electronics.com /tutorials/positive_feedback_3_08_12.htm (1136 words)

	Positive feedback (Site not responding. Last check: )
		Positive feedback is a little more difficult with this configuration because the input and output signals are 180° out of phase.
		Positive feedback can be accomplished by feeding a portion of the output signal of the second stage back to the input of the first stage.
		Sometimes positive feedback is used to eliminate the effects of negative feedback that are caused by circuit components.
	www.tpub.com /neets/book8/30f.htm (902 words)

	Feedback about Feedback
		Positive and negative feedback, strictly utilitarian terms in their technical usage, have taken on affective shadings in the contexts of performance appraisals and interpersonal interactions.
		Positive feedback is viewed as complimentary, pleasing and, generally speaking, consistent with the recipient’s self-image.
		Sandy obtains feedback in the form of his perceptions of the extent to which his behavior is consistent with his goals and expectations, the extent to which it produces the intended and desired effects, and the extent to which subsequent events confirm his goals, expectations, and behavior.
	home.att.net /~nickols/feedback.htm (2908 words)

	Feedback - a key concept in Economics and Management
		Positive feedback loops can go into two directions: they can be either "exploding" or "imploding".
		It is generally agreed that a decision maker receiving positive feedback tends to be motivated and to continue with the previously chosen course of action only slightly modifying it.
		timing when feedback is given; generally, feedback can be obtained either immediately after the decision making or be delayed (shortly after the decision), or be postponed (delivered much time after the decision making action), or not be delivered at all; for a discussion see this paper.
	www.economicswebinstitute.org /glossary/feedback.htm (1706 words)

	Gamasutra - Features - "Balancing Game with Positive Feedback" Printer Friendly
		Negative feedback is the opposite of positive feedback; it's an effect that tends to diminish, rather than amplify, the output of a system.
		A good example of using negative feedback to control positive feedback is the way that the player draft works in American professional football.
		Of course, it's not that simple in practice; teams are allowed to trade their positions in the selection order, and the quality of their play depends a lot on the quality of the coaching, not to mention the other players already on the team.
	www.gamasutra.com /features/20020104/adams_pfv.htm (2654 words)

	Positive feedback - PatentStorm (Site not responding. Last check: )
		A circuit for a power amplifier is disclosed which amplifies and outputs an audio signal by amplifying an input audio signal using first and second differential circuits, and driving a push-pull output transistor with the outputs from the first and second differential circuits.
		A cascode amplifier which includes a cascade amplifier stage, an output node (coupled directly or indirectly to the cascode amplifier stage), and positive feedback circuitry coupled between the output node and the cascode amplifier stage (or positive feedforward circuitry coupled between the...
		The resistor is bootstrapped using positive feedback with a...
	www.patentstorm.us /class/330/112-Positive_feedback.html (544 words)

	fUSION Anomaly. Feedback
		The trap is the vicious escalation of positive feedback, whether it's a barfight or the arms race or consumer culture.
		Feedback may be negative, thus tending to reduce output, or positive, thus increasing output.
		In engineering control theory, feedback is a process in which a signal generated from the output of a system is applied as an input to the same system.
	fusionanomaly.net /feedback.html (1807 words)

	Feedback, Social Power, the Evolution of Social Systems
		But when positive feedback isn't moderated by negative feedback, it can become so extreme that it creates chaos: the system goes wild, often to the point of breakdown.
		Civil rights were first conceived as a negative feedback function to moderate the natural tendency of social power to concentrate in a few hands and oppress dissent.
		However, when their social role is manipulated by those with concentrated power (The State in totalitarian countries, and wealthy elites in others), their feedback role is changed into something to reinforce the power of the powerholders (positive feedback magnifying that power).
	www.co-intelligence.org /CIPol_FeedbkSocEvol.html (2024 words)

	positive feedback online
		Positive Feedback Online is first and foremost a community, composed of writers and creative persons from around the world.
		Positive Feedback Online is an ongoing "work in progress," chronicling the efforts of audiophile listeners, reviewers, designers, manufacturers, distributors, and humorists to explore the possibilities of high end audio to the utmost.
		Informed members of the design/manufacture/distribution community have been enthusiastic and supportive contributors to Positive Feedback from the beginning, with no messy con
	www.positive-feedback.com (130 words)

	Managerial Feedback, Associate Performance, and Eleven Positive Feedback Rules
		It has been suggested that given the three managerial feedback alternatives, positive feedback is the only one that will consistently result in the type of performance that managers and organizations want.
		Managers, who are committed to both increasing their levels of positive feedback and not ignoring good performance, have a need to understand the basic positive feedback rules.
		The conclusion is that positive feedback is the only one that will consistently generate the type of worker performance that managers and organizations want.
	edis.ifas.ufl.edu /HR026 (1557 words)

	Evaluating a Member's Reputation (Site not responding. Last check: )
		Each feedback left consists of a rating (positive, negative, or neutral), and a short comment.
		It is usually the difference between the number of members who left a positive rating and the number of members who left a negative rating.
		In the example shown above, the positive feedback percentage is 3531 divided by 3531 + 3 = 99.9%.
	pages.ebay.com /help/feedback/evaluating-feedback.html (416 words)

	Feedback - Wikipedia, the free encyclopedia
		Feedback may be negative, which tends to reduce output (but in amplifiers, stabilises and linearises operation), positive, which tends to increase output, or bipolar[1], which can either increase or decrease output.
		When stocks are rising (a bull market), the belief that further rises are probable gives investors an incentive to buy (positive feedback, see also stock market bubble); but the increased price of the shares, and the knowledge that there must be a peak after which the market will fall, ends up deterring buyers (negative feedback).
		Feedback is usually bipolar—that is, positive and negative—in natural environments, which, in their diversity, furnish synergic and antagonistic responses to the output of any system[2].
	en.wikipedia.org /wiki/Feedback (1468 words)

	The Hoosier Gadfly » Blog Archive » Positive Feedback (Site not responding. Last check: )
		For example, the design of the graphite-moderated, water-cooled reactor at Chernobyl exhibited a positive feedback during control rod insertion.
		As a consequence, the last occasion on which the Chernobyl reactor experienced a positive feedback produced a decidedly non-optimal outcome, from the engineering standpoint.
		This form of positive feedback is called an “arms race” and Nature is replete with examples – notably cheetahs and their prey, Thompson’s gazelles, run very fast.
	paulhager.org /wordpress/index.php?p=53 (678 words)

	Positive Feedback and Oscillators
		The use of positive feedback is useful for producing oscillators.
		The condition for positive feedback is that a portion of the output is combined in phase with the input.
		The Colpitts oscillator achieves positive feedback by using an inverting amplifier plus the 180° phase shift across a parallel resonant circuit.
	hyperphysics.phy-astr.gsu.edu /hbase/electronic/posfe.html (159 words)

	eBay Feedback Profile for bestperfumeoils
		This table shows the number of positive, neutral, and negative overall Feedback ratings the member has received in the last 12 months.
		This information will be available when this member receives at least 10 detailed seller ratings.
		Detailed item information is not available for the following items because the Feedback is over 90 days old.
	feedback.ebay.com /ws/eBayISAPI.dll?ViewFeedback&userid=bestperfumeoils (156 words)

	eBay Guides - Guide To Positive Feedback
		Positive feedback is just that, someone else's positive view of your actions during a particular transaction.
		I have seen way too many premature negative feedback comments left for sellers, that were caused by a P.O. error etc. I am quite sure that most of them could have been avoided, if the seller had just kept in constant courteous contact with their buyer throughout the entire ordeal.
		A buyers path to positive feedback is an easier one, but an important process none the less.
	reviews.ebay.com /Guide-To-Positive-Feedback_W0QQugidZ10000000000937809 (1218 words)

	positive feedback
		However, we all have to learn how to give positive feedback, or be prepared to face the consequences.
		As an outsider, I suggest that you watch the facial expressions of the students as feedback is given.
		When you combine this with your positive feedback, you will have a very happy author who will be more than willing to listen to your suggestions.
	www.english.iup.edu /liberalstudies/en101positive.htm (1329 words)

	positive feedback
		This means that once a positive feedback system forms, there has to be drastic outside forces to change it.
		Positive feedback is one of the main factors in creating a non-linear system.
		Positive feedback is the force in nature that produces most of the non-linear characteristics we recognize, such as sensitivity to starting conditions and multiple stable answers to the same question.
	www.paulbunyan.net /users/gsirvio/nonlinear/positive.html (1593 words)

	Homeostasis (Site not responding. Last check: )
		In negative feedback, the body responds in such a way as to reverse the direction of change.
		Positive feedback is used in certain situations where rapid change is desirable (see Positive Feedback for an example).
		To illustrate the components involved in negative feedback, we can use the example of a driver trying to stay near the speed limit.
	www.colorado.edu /epob/academics/web_resources/cartoons/homeo.html (312 words)

	Feedback
		The Feedback Forum is the place to learn about your trading partners, view their reputations, and express your opinions by leaving feedback on your transactions.
		Once it is left, the feedback becomes a permanent part of the member's profile.
		A positive rating adds 1 to the score, a negative rating decreases it by 1, and a neutral rating has no impact.
	www.ebay.com /services/forum/feedback.html (364 words)

	SoundStage! Positive Feedback Reprint
		It was originally built to carry both positive and negative run under one sheath, so the two groups are braided together at near right angles to each other around a center dielectric of polyethylene, then insulated in a transparent PTFE jacket.
		Subscriptions to Positive Feedback are $30.00/six issues in the US, US $45.00 in Canada, and US $75.00 in the rest of the world.
		Positive Feedback welcomes submissions of manuscripts as candidates for publication.
	www.soundstage.com /pf02.htm (7065 words)

	Positive Feedback as a Search Strategy - Dorigo, Maniezzo, Colorni (ResearchIndex) (Site not responding. Last check: )
		Abstract: : A combination of distributed computation, positive feedback and constructive greedy heuristic is proposed as a new approach to stochastic optimization and problem solving.
		Positive feedback accounts for rapid discovery of very good solutions, distributed computation avoids premature convergence, and greedy heuristic helps the procedure to find acceptable solutions in the early stages of the search process.
		Dorigo, V. Maniezzo, and A. Colorni, Positive feedback as a search strategy, Technical Report 91016, Dipartimento di Elettronica e Informatica, Politecnico di Milano, IT, 1991.
	citeseer.ist.psu.edu /dorigo91positive.html (537 words)

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