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• 2/24; } } } } protocols { /* Dont enable damping globally - we want it to just apply to our eBGP peers. */ bgp { group your-flappy-peername { /* turn on damping for this external peergroup */ damping; type external; /* process the damping policy "graded-flap-damping" on the input side */ import graded-flap-damping; peer-as 65500; neighbor 192. ... net for example list */ } /* Define a damping policy. */ policy-statement graded-flap-damping { term exclude { from { prefix-list golden-networks; } then { damping set-none; next policy; } } from { route-filter 0. ... 0/0 upto /21 damping set-normal; route-filter 0. ... 0/0 upto /23 damping set-medium; route-filter 0. ... 0/0 orlonger damping set-high; } then next policy; } damping set-high { half-life 30; reuse 1640; suppress 6000; max-suppress 60; } damping set-medium { half-life 15; reuse 1500; suppress 6000; max-suppress 45; } damping set-normal { half-life 10; reuse 3000; suppress 6000; max-suppress 30; } damping set-none { disable; } } .

• Fluid Damping Effects .
• Fluid-structural damping effects dramatically slow and modify the structural response of MEMS device to their electrical actuation signals. ... At atmospheric pressure the fluid damping forces scale to be about 1000 larger the actuation force required in a vacuum! That's why electrostatic actuation is not commonly seen in macroscopic devices. Even at reduced pressures the damping effects need to be characterized in order to design the electronic drive algorithms that apply/measure the actuation forces. ... The fluid damping changes drastically when the transition from compressible to incompressible flow occurs.
• ANSYS Multiphysics can be used to compute squeeze film damping and fluid stiffness effects using either a Reynold squeeze film approximation or a Fluid Structural Interaction approach. ...
• 2-D fluid damping elements are used to solve the Reynolds squeeze film equation on the face of the structure, plus oneleent type is aivalve ot simluated fluid flow throuh holes in the structure. Using a harmonic analysis the complex (real & imaginary) pressure distribution can be used to compute the frequency dependent damping and squeeze stiffness coefficients.
• The approach was subsequently factored into the damping elements FLUID136, 138 & 139. ...
• The phase lag is directly related to the fluid damping and stiffness coefficients, which are factored out of the devices equation of motion.
• Once the damping parameters (resistance and damping terms) have been computed they can be assigned to a reduced order macro model damper and spring element. ...

• Preliminary study of the damping factor in roll.
• This paper constitutes a general theoretical discussion of the damping factor in roll, together with the results of wind tunnel tests on the continuous rolling of U. ...

• Damping-off in Flower and Vegetable Seedlings .
• Damping-off is a common disease of seedlings in North Carolina. ...
• Damping-off is primarily caused by fungi present in the growing medium. ... Species of Pythium, Sclerotinia, and Phytophthora are more likely to cause damping-off in cool, wet soils; whereas species of Rhizoctonia, Fusarium and Sclerotium rolfsii may cause damping-off under warmer and drier conditions. ...
• True damping-off may be confused with plant injury caused by excessive fertilization, high soluble salts, drowning in wet soil, desiccation in dry soil, and death of seedlings from excessive heat, cold, fuel fumes, or chemical injury. ...
• Typical symptoms of damping-off are rotting stems at or near the soil line and root decay (post-emerging damping off). ... Germinating seed can also be attached by these fungi before they emerge from the soil (pre-emerging damping off), resulting in poor stands. Rhizoctonia, Fusarium, Sclerotinia, and Sclerotium generally caused post emergence damping-off by killing the seedling at the soil line. ...
• The best control of damping-off is to avoid it altogether. Once damping-off has started in a plant bed or seedling flat, it may be difficult to control. the general methods employed to prevent damping-off consist of : .
• 2) proper soil treatment with heat or chemicals to reduce the level of fungi that cause damping-off (see Plant Pathology Information Note No. ...
• Many outbreaks of damping-off in North Carolina can be attributed to poor sanitation practices after treating the soil. ...
• Once damping-off has started in a bed or flat, its spread may be reduced by providing drier conditions for better seedling growth. ...
• If the above preventive control measures fail, several fungicides are available that may be effective if applied as a drench or heavy spray as soon as the first symptoms of damping-off are observed. Growing conditions should be improved and flats or areas of bed with damping-off should be carefully removed from the growing area. ... Several applications of the fungicide may be necessary, If the specific fungus causing damping-off is not known, one broad spectrum fungicide (captan or ferbam), two specific fungicides (benomyl plus, etridiazole or metalaxyl) or a prepared combination of fungicides (etridiazole + thiophanate methyl) should be used. ...

• Radiation damping.
• Radiation damping is an affect on intense signals in high field NMR. ...   As detailed below radiation damping causes peak broadening, peak asymmetry, phase shifting, and residual signals at 180 and 360 degrees in the flip cycle, all of which can interfere with accurate calibration. ...
• Effects of radiation damping on spin dynamics J. ...
• Radiation damping in magnetic resonance experiments Phys. ...
• Let's call the radiation damping field vector Brd. ...
• The signal recovered after a 180 degree pulse most strongly reveals the nature of the radiation damping effect, since it can be conceptualized as giving  a Brd pulse followed by a B1 pulse that causes no further signal. ...   If the signal is phased such that shorter B1 pulses would give in-phase peaks, then the residual damping signal crudely appears as a dispersive signal. ...   I'm guessing here, but I think the distorted look of this signal is because the radiation damping signal itself is not a square pulse. ...
•   One consequence of this is that if the probe is poorly tuned (therefore delivering less power and less damping), the water peak will appear sharper. ...
•   On the Avance600, if you measure the relative phase of a hard and soft water pulse at 90 degrees, and then measure it again at 1/4 90 degrees (where radiation damping is less of a factor), there is about a 4 degree discrepency. ...   The automatic phase correction on the avance instruments sets phases without the radiation damping effect.   I have some confusion as to whether it would ever be superior to include the small shift from the radiation damping (for example by setting it with phcor21 in the HNCACBSE pulse program). ...
• Note that the radiation damping effect continues to build as the flip cycle proceeds towards 180.   So making the radiation damping effect small isn't a matter of making the recovered signal small; rather it's a matter of reducing the total damping radiation emitted during the pulse cycle.   Since the damping signal feeds back during the pulse itself, it doesn't matter that the receiver hasn't been activated.   One continues to accumulate damping signal till 180 degrees.   So making the pulse time close to 180 rather than close to 0 would make the radiation damping effect worse. ...

• Title: Methods for improving damping. Part 1: an introduction and guide to practical methods of increasing structural damping. ...
• The principal sources of damping (acoustic, material and structural) are discussed and typical values of damping ratio likely to be met in various types of metallic and composite structures without special treatment are suggested. The properties of materials used to provide additional damping are reviewed, with particular consideration given to temperature and frequency effects. ... Methods of increasing damping in structural design (metallic or composite) are considered and the addition of damping by layered treatments or a tuned damper is discussed. Analytical methods for estimating the damping provided by added free layers of damping material applied symmetrically or asymmetrically to beams and plates are given. The damping due to constrained single or multiple layers of damping material also applied to beams and plates is discussed and behaviour of loss factor with variation in layer thickness is illustrated. ...
• constrained, damping, free, frequency, increase, layer, material, property, structural, temperature, treatment, tuned.

• Views Sonic Design - damping feet.
• Product: Sonic Design SD damping feet.
• Damping feet, once again. ...
• So, ladies and gentlemen, guys & gals, here are the Sonic Design SD damping feet for loudspeakers from Sweden. ... Now, the name tells the whole story: these damping feet were originally meant and designed for loudspeakers then, testing 'em under amps and CD players, the Sonic Design guys started to think at different versions to suit everyone's needs (CD players etc. ...
• But Sonic Design pays an extreme attention to make you get the perfect damping solution, so their advice is to weigh the front and the rear of the loudspeaker, so to choose the right compound for the given weight.
• To get the perfect damping, you just need to put a good digital scale (the same your wife uses to control her weight) under the front baffle and then under the rear. ...
• There's no need to make 'em aware of the curious and hard to explain fact you've just put your loudspeakers on a Weight Watchers strictly low-fat diet :-)))) The Sonic Design crew claims their feet (well, not literally, their SD damping feet :-)) reduce the transmission of vibrations, helping to get a cleaner and less coloured sound. ...
• It is their doors rattling, I guess :-0 The SD damping feet have two sides: the rough one should face downwards while the smooth one should be kept in contact with the cabinet of the loudspeaker.
• ANY damping/decoupling device I've tested under heavy floorstanders has caused the same troubles (I'm referring to Vibrapods, G-Flex's etc. ...
• Avoid loading excessive weight on the SD feet, choose the right compound for your needs! You can permanently damage the damping structure and loose any sonic benefit. ...
• The SD feet are honest and clever accessories, they don't promise you a miracle, but get the work done, if decoupling/damping is what you're after. ...
• Easily tuneable to suit everyone's needs they could be considered THE SOLUTION for any damping/decoupling action you may need into your HiFi system. ...
• Ingvar öhman also pointed out that the main task for super elastic feet is to be elastic, not to add damping. An infinitely elastic foot with no damping (i. ...

• Damping Factor.
• Damping Factor is a term audio enthusiasts (and their rabid cousins, the audiophiles) run into time and time again. However, few people actually understand precisely what the term means, what the consequences of a particular damping factor rating might be for the ultimate desired result (sound reproduction!) or what issues affect the application or relevance of damping factor. ...
• If you don't understand basic electric current and voltage, let's just say that damping factor is a figure of merit that tells you how good an amplifier is at controlling a speaker system. ...
• When one amplifier's damping factor is higher than another's, that tells you that the amplifier with the higher damping factor can better control the speaker systems, and all other things being equal (frequency response, phase shift, distortion, etc. ...
• Deriving Damping Factors.
• Technically, the damping factor is the specified load impedance (in use, that'd be the speaker system) divided by the amplifier's output impedance. ...
• For a perfectly resistive 8 ohm load impedance, an amplifier with a perfectly resistive output impedance of 4 ohms (that's pretty high, by the way) presents a damping factor of eight over four, or two: .
• 1 ohms presents a damping factor of eight over point one, or eighty: .
• From this we can fairly easily see that the damping factor number itself represents a ratio, one that tells you as it becomes larger, that the source (output) impedance of the amplifier is progressively lower. Damping factors can be quite high; for instance, an amplifier with an output impedance of. 01 ohms would result in a damping factor of 800 against an 8 ohm load impedance, a very large number as compared to what we usually see power amplifiers rated. ...
• We can also see that because damping factor is a ratio that requires the load impedance to compute, it must be stated against some known impedance to be meaningful. When someone says an amplifier's damping factor is 87, that's not enough. ...
• You can easily move everything to a comparable damping factor number. If an amp was rated as having a 100 damping factor against four ohms, then it is 200 against 8 ohms. Why? because the only way you can get a damping factor of 100 at four ohms is with these numbers. ...

• Damping off.
• Damping off is due to several soil and water-borne fungi that attack the stem base, which becomes thin and brown and a white fluffy fungus may develop. The same fungi may attack below ground causing an apparent failure of seed to germinate (pre-emergence damping off). ...

• Research for Contact Loss Reduction Method by Damping Catenary Vibration.
• A hanger developed to have spring and damping mechanism, such as a rubber damping hanger or a friction damping hanger, is found to be effective for damping the catenary vibration and reducing the contact loss. It is expected that the contact loss reduction method by damping the catenary vibration will contribute to speed-up in electric railway.
• Key words : Current collection, Contact wire, Wave motion, Damping, Pantograph, Contact force fluctuation, Contact loss.
• This paper describes the influence of the wave motion on the contact force fluctuation, the damping methods of the catenary vibration, and the effect of reducing the contact loss.
• 11 (spring constant:1500N/m, damping factor:100Ns/m, speed:100km/h). ...
• Damping methods of catenary vibration.
• (1) Adding the spring-damping mechanism at hangers or droppers.
• (3) Adding the spring-damping mechanism at anchor points.
• (4) Increasing the damping of the wire itself.
• (5) Increasing the damping of the pantograph.
• This chapter describes the damping methods of the catenary vibration using damping type hangers.
• 1 Construction of damping type hanger A damping type hanger (see Fig. ... A coil spring is used in a friction damping hanger, and the spring constant can be small comparatively. The friction between a piston ring and the inside of the pipe acts as a damping mechanism. A piece of rubber is used in a rubber damping hanger, and it is simple and economical. If the analysis model is assumed in the form of two infinite strings connected by a hanger, and a wave motion incident from one side of the contact wire, the characteristics of the reflection factor and the energy damping ratio of the wave will be calculated as shown in Fig. ...

• Title: Estimation of damping in laminated and fibre-reinforced plates. ...
• Abstract: ESDU 85012 introduces a Fortran program for the estimation of the material damping in a rectangular, laminated plate, with simply-supported or clamped edges, vibrating in the lower frequency natural modes (up to the fifth mode). ... The input includes individual lamina elastic properties, the calculation of which is treated in ESDU 83035, and damping properties. Curves are given to enable approximate values of damping in longitudinal and transverse flexure and in longitudinal shear to be estimated for each lamina. Guidance is given on the effect of various factors on the damping of fibre-reinforced laminated plates, and a practical worked example illustrates the use of the method. ...
• Damping in laminated and fibre-reinforced plates.
• composite, damping, fibre, laminated, orthotropic, plate, program, rectangular, reinforced, fiber.

• Phytophthora damping-off of soybeans (6/21/1999) .
• Disease problems after soybean damping-off.
• Seedling damping-off by Phomopsis/Diaporthe.
• Soybean damping-off and replanting.
• We have received many reports of damping-off caused by Phytophthora sojae in the last few years, and with the warm soil conditions and wet weather in early June, we anticipate that it will be a problem again this year.
• Damping-off by Pythium/Phytophthora.
• We still recommend planting a variety with Rps1k if a grower has problems with damping-off, although, the possibility exists of failure.
• If Phytophthora causes severe stand loss due to damping-off, replanting should be undertaken with the addition of a fungicide seed treatment such as Apron. ...

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