Search Results - "West, P. W"

Do increasing respiratory costs explain the decline with age of forest growth rate? by West, P. W.

“…Once forests have achieved a full canopy, their growth rate declines progressively with age. This work used a global data set with estimates from a wide range…”
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Problems with models assessing influences of tree size and inter-tree competitive processes on individual tree growth: a cautionary tale by West, P. W., Ratkowsky, D. A.

“…In forest growing at any one site, the growth rate of an individual tree is determined principally by its size, which reflects its metabolic capacity, and by…”
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Simulation studies to examine bias and precision of some estimators that use auxiliary information in design-based sampling in forest inventory by West, P. W.

“…Background Various double sampling methods using both target and auxiliary variables have been developed over many years for use in natural resource inventory…”
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A review of the growth behaviour of stands and trees in even-aged, monospecific forest by West, P. W.

“…Abstract Key message Metabolic, physiological and inter-tree competitive processes interact to determine long-term growth behaviour of stands and individual…”
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Quantifying effects on tree growth rates of symmetric and asymmetric inter-tree competition in even-aged, monoculture Eucalyptus pilularis forests by West, P. W.

“…Key message In even-aged, monoculture eucalypt forest, symmetric inter-tree competition was far more important in determining tree growth rates than asymmetric…”
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Effects of site productivity on individual tree maximum basal area growth rates of Eucalyptus pilularis in subtropical Australia by West, P. W.

“…Inventory data were available from 96 plots of even-aged, monoculture, tall-open forests of Eucalyptus pilularis Smith, aged 2–63 years, growing in…”
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Modelling Maximum Stem Basal Area Growth Rates of Individual Trees of Eucalyptus pilularis Smith by West, P W

“…Abstract The growth rate of a tree at any time relates to its size and the level of competition exerted by its neighbors for the resources it needs for growth…”
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Estimation of biomass and sequestered carbon on farm forest plantations in northern New South Wales, Australia by Specht, A., West, P.W.

“…Tree stem diameters were measured in a stratified random sample of plots in each of 19 forest plantation estates in northern New South Wales. The estates were…”
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Calculation of a Growth Dominance Statistic for Forest Stands by West, P.W.

“…Growth dominance within a forest stand refers to the proportional contribution to stand growth by individual trees in relation to the proportional contribution…”
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Simple random sampling of individual items in the absence of a sampling frame that lists the individuals by West, P. W.

“…Background A ‘sampling frame’ identifies the sampling units in a population and their locations. It may consist of a listing of sampling units, or it may be…”
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Correlation of submicron dust production in DIII-D to impulsive wall heating from ELMs by Bray, B.D., West, W.P., Rudakov, D.

“…Submicron dust particles are observed by Rayleigh/Mie scattering from ND:YAG laser light during plasma discharges at DIII-D. The observed dust density…”
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Scaling of divertor heat flux profile widths in DIII-D by Lasnier, C.J., Makowski, M.A., Boedo, J.A., Allen, S.L., Brooks, N.H., Hill, D.N., Leonard, A.W., Watkins, J.G., West, W.P.

“…New scalings of the dependence of divertor heat flux peak and profile width, important parameters for the design of future large tokamaks, have been obtained…”
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Formation of deuterium–carbon inventories in gaps of plasma facing components by Krieger, K., Jacob, W., Rudakov, D.L., Bastasz, R., Federici, G., Litnovsky, A., Maier, H., Rohde, V., Strohmayer, G., West, W.P., Whaley, J., Wong, C.P.C.

“…Plasma facing components for ITER will be manufactured as macro brush structures or with castellated surfaces. Material samples with gaps of similar geometry…”
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Fast camera imaging of dust in the DIII-D tokamak by Yu, J.H., Rudakov, D.L., Pigarov, A.Yu, Smirnov, R.D., Brooks, N.H., Muller, S.H., West, W.P.

“…Naturally occurring and injected dust particles are observed in the DIII-D tokamak in the outer midplane scrape-off-layer (SOL) using a visible fast-framing…”
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Simulation studies comparing fixed effect and mixed models in data sets with multiple measurements in individual sampling units by West, P. W., Ratkowsky, D. A.

“…Use of mixed models is advocated almost ubiquitously when regression analysis is applied in data sets that contain multiple measurements in individual sampling…”
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Firewood harvest from forests of the Murray-Darling Basin, Australia. Part 1: Long-term, sustainable supply available from native forests by West, P.W., Cawsey, E.M., Stol, J., Freudenberger, D.

“…The Murray-Darling Basin is a 1 million km 2 agricultural region of south-eastern Australia, although 29% of it retains native forests. Some are mallee…”
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Population structure and correlation between auxiliary and target variables may affect precision of estimates in forest inventory by West, P. W.

“…Simulations of forest inventory in several populations compared simple random with "quick probability proportional to size" (QPPS) sampling. The latter may be…”
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Compatibility of the radiating divertor with high performance plasmas in DIII-D by Petrie, T.W., Wade, M.R., Brooks, N.H., Fenstermacher, M.E., Groth, M., Hyatt, A.W., Isler, R.C., Lasnier, C.J., Leonard, A.W., Mahdavi, M.A., Porter, G.D., Schaffer, M.J., Watkins, J.G., West, W.P.

“…A radiating divertor approach was successfully applied to high performance ‘hybrid’ plasmas [M.R. Wade et al., in: Proceedings of the 20th IAEA Fusion Energy…”
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Correlation of submicron dust observed in DIII-D during plasma operation with plasma operating parameters by West, W.P., Bray, B.D.

“…A database of dust events observed using the Thomson scattering systems on DIII-D has recently been expanded to incorporate over 2500 discharges over a 9-month…”
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Migration of artificially introduced micron-size carbon dust in the DIII-D divertor by Rudakov, D.L., West, W.P., Wong, C.P.C., Brooks, N.H., Evans, T.E., Fenstermacher, M.E., Groth, M., Krasheninnikov, S.I., Lasnier, C.J., McLean, A.G., Pigarov, A.Yu, Solomon, W.M., Antar, G.Y., Boedo, J.A., Doerner, R.P., Hollmann, E.M., Hyatt, A.W., Moyer, R.A., Watkins, J.G.

“…Migration of pre-characterized carbon dust in a tokamak environment was studied by introduction of ∼30mg of micron-size (∼6μm median diameter) dust in the…”
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