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Convective overshoot - Wikipedia, the free encyclopedia Convective overshoot is the phenomenon of convection carrying material beyond an unstable region of convection, into a stratified, stable region. Overshoot is caused by the momentum of the convecting material, which carries the material beyond the convecting region. This overshoot is responsible for most of the turbulence experienced in the cruise phase of commercial air flights. en.wikipedia.org /wiki/Convective_overshoot   (193 words)

Expert About ov:Overshoot Overshoot at the base of the solar convection zone is of fundamental interest for solar dynamo theory, since the mean thermodynamic stratification and the statistical properties of the convective fluctuations affect the storage capability for magnetic field. Overshoot models of the past, based mainly on the non-local mixing-length theory, generally produce a shallow weakly subadiabatic region with a steep transition to the radiative interior, whereas recent studies based on numerical simulations lead to much deeper overshoot with larger values of subadiabaticity. Overshoot is the increase in masked threshold for a short signal presented at the onset of a masker compared to the threshold for a signal presented in the temporal center of the masker. expertsite.biz /dir/ov/overshoot.htm   (1030 words)

Overshoot - Wikipedia, the free encyclopedia Note: Overshoot occurs when the transition is from a lower value to a higher value. Note 2: Overshoot may result from circuit design parameters that are intended to decrease the response time of the circuit. Note 3: The amount of overshoot in a given circuit is designed to minimize response time while maintaining distortion of the signal within acceptable limits. en.wikipedia.org /wiki/Overshoot   (341 words)

Convective overshoot -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-20) Convective overshoot is the phenomenon of ((meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere) convection carrying material beyond an (Click link for more info and facts about unstable) unstable region of convection, into a (Click link for more info and facts about stratified) stratified, stable region. This overshoot is responsible for most of the (A state of violent disturbance and disorder (as in politics or social conditions generally)) turbulence experienced in the cruise phase of commercial air flights. Another example of convective overshoot is at the base of the (Click link for more info and facts about convection zone) convection zone in the (Click link for more info and facts about solar interior) solar interior. www.absoluteastronomy.com /encyclopedia/c/co/convective_overshoot.htm   (161 words)

Power Supply Output Filter Design - Overshoot The magnitude of the overshoot is the vector sum of two orthogonal voltages, the output voltage before the load is removed and the current through the inductor times the characteristic impedance of the output filter, Zo = (L/C)^1/2. Overshoot can be minimized by minimizing the filter characteristic impedance, Zo, by decreasing inductance or increasing capacitance or both. This degree of overshoot would destroy most logic circuits for which the supply was intended, or worse, severely degrade their reliability without destroying them. www.smpstech.com /over0000.htm   (1175 words)

Dynamic transient response filter - Patent 4134074 The overshoot compensator includes a threshold clipper which separates out any overshoot component generated by the first filter, an amplifier which amplifies the overshoot component, and a subtractor circuit which subtracts the amplified overshoot component from the output of the first filter to provide the modified signal. An overshoot compensator is provided which is responsive to this filtered signal and which modifies the signal so as to provide a modified filtered signal which, when filtered for a second time, will produce a frequency limited signal which does not exceed predetermined amplitude constraints. The amplified overshoot components supplied by amplifier 40 are then directed to a subtractor circuit 42 which serves to subtractively combine the output of filter 32 with the amplified overshoot components provided by amplifier 40. www.freepatentsonline.com /4134074.html   (2994 words)

Fitz Steel Overshoot Water Wheels, Bulletin 70, 1928 The extent to which any overshoot wheel makes use of these advantages depends largely upon design of the wheel, its accuracy of construction and the material of which it is made. Since the overshoot depends mainly on the positive weight of the water and only in a small degree on impulse, it can run fast or slow, with high head or low head, at full gate or fractional gate with equally high efficiency, and developing power in exact proportion to the amount of water used. Wood overshoots have been built for centuries, but up until the advent of the Fitz, an efficiency of 75% was considered the limit for an overshoot wheel of any kind. www.angelfire.com /journal/pondlilymill/fitz.html   (8179 words)

Investigation of pressure overshoot in gas-fluidized beds The pressure overshoot was found to increase exponentially with increasing particle diameter when the width of the bed was held constant. However, a linear relationship between particle diameter and pressure overshoot was observed when the width of the bed was increased proportionally to the increase in particle diameter. It was found that a small particle-wall attractive force resulted in a decrease in the pressure overshoot, but a strong particle-wall attraction could cause the pressure overshoot to increase. epubl.luth.se /1402-1617/2001/310   (218 words)

* Overshoot - (GIS): Definition Overshoot: Situation where a digital line extends past the intended boundary line. For scanned maps, blemishes on the source map may need to be removed from the resulting raster... In a sense, the high value of 1.0 at X=-1 "overshoots" as it descends to the value of 0.0 at X=0 and then "recovers" to the value of 0... en.mimi.hu /gis/overshoot.html   (171 words)

Overshoot; William R. Catton Jr. If overshoot has already occurred (or must occur because of demographic and technological momentum already generated), then the model depicted in Panel B is already obsolete, whether or not such a transition to equilibrium might once have been feasible. Resistance to abrupt change of deeply ingrained habits, expectations, and institutional forms and processes probably means the curve could not be voluntarily (or democratically) bent toward the horizontal as sharply as shown in Panel B anyway. The greater the overshoot, the greater the crash. www.greatchange.org /footnotes-overshoot-graphs.html   (1170 words)

Topographic-Specific Axon Branching Controlled by Ephrin-As Is the Critical Event in Retinotectal Map Development -- ... TZ, the posterior extent of axon overshoot is decreased. Axons overshoot their topographically correct termination zone (TZ; marked by brackets), but the distribution of interstitial branches along the axon shafts is strongly biased for the location of the future TZ along the anterior (A)-posterior (P) tectal axis at all ages. Axons overshoot their topographically correct TZ (the predicted locations of the TZs are marked with fl arrowheads), but the distribution of interstitial branches along the axon shafts (white arrowheads) is strongly biased for the location of the future TZ along the anterior (A)-posterior (P) tectal axis. www.jneurosci.org /cgi/content/full/21/21/8548   (10657 words)

£140 million arable payments despite overshoot   (Site not responding. Last check: 2007-10-20) There was an overshoot of 3.5 per cent in the non-LFA in 1994; penalties were reduced to 0.7 percent (20 per cent of the original penalty) under the December 1993 agreement. There was an overshoot of 3.7 per cent in the non-LFA in 1995; penalties were reduced to 1.85 per cent (50 per cent of the original penalty) under the December 1993 agreement. There were overshoots of 4.4 per cent and 7.1 per cent respectively in the non-LFA in 1996 and 1997; penalties were applied in full. www.scotland.gov.uk /news/releas98_2/pr1846.htm   (460 words)

Limits to Growth: 30 Year Review To overshoot means to go too far, to go beyond limits accidentally ─without intention. Most types of overshoot occur frequently enough that when they are potentially dangerous, people learn to avoid them or to minimize their consequences. The potential consequences of this overshoot are profoundly dangerous. www.mnforsustain.org /pop_limits_to_growth_30_year_review_meadows.htm   (2425 words)

AlterNet: EnviroHealth: Facing the Limits to Growth It is also a source of sadness for me to see so much energy invested in denial and almost none put into making the changes that would let humanity survive on this beautiful planet in good order more or less indefinitely. The three causes of overshoot are always the same, at any scale from personal to planetary. Overshoot is common, and it exists in almost infinite forms. www.alternet.org /envirohealth/18978   (2637 words)

Severe Overshoot As we know, if source impedance of a driver mismatch trace impedance, overshoot and undershoot will exist in a receiver end, assume that source impedance is smaller than trace impedance, and the driver and receiver devices are CMOS type. Overshoot can in severe cases cause CMOS latch-up and destruction of the receiver. When the protection diodes are present, overshoot, if it over-stresses the protection diodes, can cause aluminum migration in the diode contacts and eventual failure of the diodes. www.sigcon.com /Pubs/news/2_31.htm   (323 words)

Overshoot in a nutshell (Malthus was an optimist) | EnergyBulletin.net | Energy and Peak Oil News Overshoot in a nutshell (Malthus was an optimist) Overshoot in a nutshell (Malthus was an optimist) A species may greatly overshoot the long term carrying capacity of its environment. www.energybulletin.net /4735.html   (836 words)

AlterNet: Facing the Limits to Growth To overshoot means to go too far, to go beyond limits accidentally -- without intention. By definition, overshoot is a condition in which the delayed signals from the environment are not yet strong enough to force an end to growth. It is as impossible now for anyone to describe the world that could evolve from a sustainability revolution as it would have been for the farmers of 6000 BC to foresee the corn and soybean fields of modern Iowa, or for an English coal miner of AD 1800 to imagine an automated Toyota assembly line. www.alternet.org /story/18978   (2417 words)

[No title]   (Site not responding. Last check: 2007-10-20) The bandit will not overshoot if you are 50 or more knots slower or faster than corner velocity, or if you are not pulling enough G. The last option the bandit has is a pure pursuit attack. A 3/9 line overshoot is always tactically significant, while a flight path overshoot may not be. As a rule of thumb, the greater the range when he overshoots and the slower the line-of-sight rate, the less chance you have of forcing him out in front of your 3/9 line with a reversal. www.simhq.com /simhq3/sims/air_combat/f3manual/bfm3.shtml   (2917 words)

Motor And Drive Compatibility: A Must Substantial overshoots now occur on short lead lengths that were not a problem in the past. The peak voltage at the terminals of a motor under VFD operation depends on the input voltage to the VFD and the amount of overshoot at the motor. We can show mathematically that the overshoot will not exceed twice the peak of the rectangular input, no mater how fast the rise time or how big the inductance. ecmweb.com /mag/electric_motor_drive_compatibility/index.html   (1485 words)

Amazon.com: Books: Overshoot   (Site not responding. Last check: 2007-10-20) It's almost universally agreed that powerful novels don't feature long passages where the author simply drops the story and instead just starts directly telling the reader what their message is. In "Overshoot" the narrator is constantly breaking into lecture mode, going on for paragraph after paragraph about how evil it is to disrespect the environment. Overshoot tells the story of a group of senior citizens in the Berkeley hills trying to survive after global warming is about to bring the world to an end. Hard sci fi fans might not appreciate the references to synchronicity and Gaia beliefs in Overshoot, but I felt Clee skillfully weaves together aspects of culture and mysticism while still keeping her empirical feet (mostly) on the ground. www.amazon.com /exec/obidos/tg/detail/-/0441005098?v=glance   (1720 words)

Our Ecological Footprint - Overshoot   (Site not responding. Last check: 2007-10-20) When the consumption of resources goes beyond this surplus, the ecosystems are depleted and damaged, and will finally not be able to support the same size population at the same level of consumption. There is a time-lag between this "overshoot" and its effects. We have gone beyond using the surplus generated by the Earth's ecosystems to depleting the natural "capital stock". www.sustaindane.org /main/EF3.html   (128 words)

Aces High BB - Creating overshoot   (Site not responding. Last check: 2007-10-20) When being chased by the enemy, and wanting to create an overshoot situation is it better to kill the engine or just bring the throttle back. The best way to force an angular overshoot is to place your lift vector in the bandit's plane of motion and then pull hard. If the bandit's overshoot rate was slow (and you elect to attempt a reversal), then execute a slower reversal by keeping the G on as you roll back into the bandit. www.hitechcreations.com /forums/showthread.php?s=&threadid=13556   (2943 words)

Overshoot by Mona Clee   (Site not responding. Last check: 2007-10-20) Following the slow building of consensus among scientists that the ozone layer is deteriorating and the earth is warming due to greenhouse gasses, the number of eco-disaster novels published has accelerated. Overshoot, by Mona Clee, is set in Berkeley, California, and posits not a sudden catastrophe, but a slow wilting due to global warming. Overshoot is a story about the strength and fragility of human friendship, even more than it is about ecology. www.iiipublishing.com /overshot.htm   (556 words)

NPG Forum: Malthus - More Relevant than Ever by William Catton   (Site not responding. Last check: 2007-10-20) In this Forum, Dr. Catton elucidates the contemporary relevance of Malthus, by examining the concept of overshoot ö the ability of humans to temporarily expand their numbers at the expense of the natural world's long-term sustainability ö in the context of Charles Darwin's understanding of population competition. Further, and more importantly, Malthus's confidence that no population could overshoot carrying capacity, but would only press miserably against the limit, precluded foreseeing the prodigality-based affluence we achieved by running up carrying capacity deficits that would be disastrous later on. But it is inexcusable today not to recognize the way populations can sometimes overshoot sustainable carrying capacity and what happens to them after they have done it. www.npg.org /forum_series/catton_malthus.htm   (1937 words)

Technical Glossary -"A"   (Site not responding. Last check: 2007-10-20) Overrange, Safe: The maximum pressure or load which may be applied to the transducer without causing a permanent change in the performance specifications. Overshoot: The number of degrees that a process exceeds the set point temperature when coming up to the set point temperature. A glossary of technical terms and phrases for use by engineers, students, technicians, etc. This source may be linked as desired without permission. www.flw.com /define_o.htm   (300 words)

overshoot   (Site not responding. Last check: 2007-10-20) I tore up a binding (a frickin all-metal plate binding!) in an overshoot at Stevens a couple years back, pissed me off but I was thankful it wasn't my knee. Knocked the wind out of myself real good at the park at Central the next year (when it was over by the fast quad), now I'm halfway chickenshxt about terrain parks. Central and West each have a jump or two on a slope where if you overshoot it least you won't come down on flat ground, these are the only park jumps I go big on anymore. www.snowboardseattle.com /ss_archive/discuss_00-01/_data/0000007b.htm   (175 words)

Arable overshoot confirmed   (Site not responding. Last check: 2007-10-20) Environment and Rural Development Minister Ross Finnie today announced that Scotland’s arable overshoot for 2001 will be 4.44 per cent. Executive had earlier indicated that the provisional overshoot was to be 5.2 per cent. The final overshoot was 4.44% and details have been sent to the Commission in Brussels. www.scotland.gov.uk /pages/news/2001/11/p_SE4345.aspx   (202 words)

Severe Overshoot Mailbag You can get overshoot on the scope that is not really there by using long ground leads on your scope probe which is due to the added inductance of the leads which Dr. Johnson has talked about many times. I am presently working with several young engineers who have made this mistake and were seriously concerned about an overshoot problem of about 2 volts that was not there. Measured correctly, the overshoot was really only about 1/2 volt. www.sigcon.com /Pubs/news/3_1.htm   (552 words)

ARS | Publication request: Experimental Measurements of Saturation Overshoot on Infiltration In this work, constant flux infiltrations into confined porous media (laterally smaller than the finger diameter, thus essentially 1-dimensional) are found to produce saturation overshoot identical to that found in gravity driven fingers. Light transmission is used to measure the saturation profiles as a function of infiltrating flux, porous media grain size, grain sphericity, and initial water saturation. The observed saturation overshoot is inconsistent with a continuum description of porous media, but qualitatively matches well observations and predictions from discrete pore-filling mechanisms. ars.usda.gov /research/publications/publications.htm?SEQ_NO_115=159121   (299 words)

Convective Overshoot (Java applet)   (Site not responding. Last check: 2007-10-20) In one example, an analysis of a storm which moved over a dense surface observing network indicated that hail size was related to the temperature difference between the cloud top and presumed equilibrium parcel temperature. Derivation of height from cloud top temperature generally assumes that cloud tops are in equilibrium with the air temperature along an observed or modeled temperature profile. This is not always valid for overshooting convective tops since the cloud top temperature may be several degress colder than the large-scale environmental temperature at the same height, depending on the lapse rate. overshoot.nssl.noaa.gov   (637 words)

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