Not exact matches
Earth's crust is now understood
as a complex
system of fault surfaces, with rises and drops in stress reflecting the interplay of
positive and negative
feedbacks operating in the rupture process.
Isotopious @ 126 — So long
as the
system reponse is linear the internal complexity doesn't matter; the
positive, i.e., enhancing,
feedbacks remain postive and similarly for the negative ones.
The Department for Education said it had received
positive feedback about the changes from many families,
as many have found the new
system more straightforward.
Featuring a scoring
system designed to encourage intrinsic motivation in students, LGL ELA Edge rewards students frequently with
positive feedback as they move ahead.
Multiple studies have demonstrated that organizations that prioritize a performance - management
system that supports employees» professional growth outperform organizations that do not.25 Similar to all professionals, teachers need
feedback and opportunities to develop and refine their practices.26
As their expertise increases, excellent teachers want to take on additional responsibilities and assume leadership roles within their schools.27 Unfortunately, few educators currently receive these kinds of opportunities for professional learning and growth.28 For example, well - developed, sustained professional learning communities, or PLCs, can serve as powerful levers to improve teaching practice and increase student achievement.29 When implemented poorly, however, PLCs result in little to no positive change in school performance.
As their expertise increases, excellent teachers want to take on additional responsibilities and assume leadership roles within their schools.27 Unfortunately, few educators currently receive these kinds of opportunities for professional learning and growth.28 For example, well - developed, sustained professional learning communities, or PLCs, can serve
as powerful levers to improve teaching practice and increase student achievement.29 When implemented poorly, however, PLCs result in little to no positive change in school performance.
as powerful levers to improve teaching practice and increase student achievement.29 When implemented poorly, however, PLCs result in little to no
positive change in school performance.30
The theory suggests that the
system is pushed by greenhouse gas changes and warming —
as well
as solar intensity and Earth orbital eccentricities - past a threshold at which stage the components start to interact chaotically in multiple and changing negative and
positive feedbacks —
as tremendous energies cascade through powerful subsystems.
Perhaps all of this newly freed up ice - cold water at the poles is temporarily acting
as a negative
feedback, but
as it absorbs more of the solar radiation, over time, it will transform into what we rightly think: a predominately
positive feedback system, rapidly intensifying the warming.
I am interested in the lags in the climate
system and to see how the limit cycles may respond to minor amounts of
positive feedback, such
as that due to CO2 outgassing with temperature.
Negative
feedbacks usually imply quiet conditions in a complex
system, whereas
positive feedbacks tend to lead to instabilities, often manifested
as internal and spontaneous oscillations (see Figure 5).
Even in simple
systems, small
positive feedbacks can lead to stable situations
as long
as the «gain» factor is less than one (i.e. for every initial change in the quantity, the
feedback change is less than the original one).
Complexity theory suggests that the
system is pushed by such things
as solar intensity and Earth orbital eccentricities — past a threshold at which stage the components start to interact chaotically in multiple and changing negative and
positive feedbacks —
as tremendous energies cascade through powerful subsystems.
The
system is best understood
as having control variables, multiple negative and
positive feedbacks and multiple emergent equilibria.
That is the nature of negative
feedback systems, of which our climate is a prime example (note that «negative
feedback» includes the Planck Response — in essence, the Stefan - Boltzmann response — and does not contradict the concept of «
positive feedbacks»
as amplifiers of CO2 - mediated temperature change, where «
positive» is used to denote
feedbacks other than the Planck Response).
As Lance Wallace points out, our climate
system must have sufficient negative
feedback to avoid
positive feedback catastrophes.
As an engineer, I recognized such positive feedback as the hallmark of a fundamentally unstable system subject to «runaway», which is precisely what the likes of James Hansen were postulatin
As an engineer, I recognized such
positive feedback as the hallmark of a fundamentally unstable system subject to «runaway», which is precisely what the likes of James Hansen were postulatin
as the hallmark of a fundamentally unstable
system subject to «runaway», which is precisely what the likes of James Hansen were postulating.
This warming is further magnified
as a result of
positive feedbacks in the climate
system.
feedback loop, which will continue to hum along
as an independent mechanism to keep the climate
system at warmer temperatures until some new cooling event shuts down the
positive feedback loop.
Climate sensitivity is somewhat uncertain
as there are remaining scientific uncertainties about the magnitude of the
positive and negative
feedbacks in the climate
system.
A deterministically chaotic
system subject to control variables — such
as CO2 — multiple
positive and negative
feedbacks and multiple equilibria.
I prefer to understand climate
as a very long series of multiple frequencies non-linear
positive and negative
feedback oscillations of the coupled
system of fluids that cover around 10 km below and 10 km over the average seal level of the Earth.
Hence, one gets a
positive feedback whereby the warming of the arctic leads to ice melting which lowers the albedo of the earth and thereby leads to further warming of the arctic (and global climate
system as a whole).
The theory suggests that the
system is pushed by greenhouse gas changes and warming —
as well
as solar intensity and Earth orbital dynamics — past a threshold at which stage the components start to interact chaotically in multiple and changing negative and
positive feedbacks —
as tremendous energies cascade through powerful subsystems.
Especially
as the supporters of CAGW have yet to explain how they expect CO2 to drive
positive feedbacks into water vapor and how they can ignore that water vapor is a negative
feedback system.
The theory suggests that the
system is pushed by greenhouse gas changes and warming —
as well
as solar intensity and Earth orbital eccentricities — past a threshold at which stage the components start to interact chaotically in multiple and changing negative and
positive feedbacks —
as tremendous energies cascade through powerful subsystems.
The question remains: Will the well - documented natural negative
feedbacks of the Earth's climate
system cope with this added forcing or will the
system spin out of control through
positive feedbacks as postulated by mainstream climate science?
There is no modern - day instrumental record for estimating the potential long - term
positive feedbacks in the climate
system, i.e the slow
feedbacks as Hansen refers to them.
We can think of the «process» here
as the entire climate
system, which contains many examples of both
positive and negative
feedback.
As for
positive feedback, there are clearly lots of elements either
positive or negative within a complex
system, but clearly one has to look at both.
After receiving
positive feedback from my colleagues, who began using the
system as well, I decided to turn my digital workaround into its own unique platform.