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M. I. Srebniak M. J. Bos F. A. T. de Vries R. Heydanus M. W. Wessels D. Van Opstal 《黑龙江环境通报》2014,34(8):806-808
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In this work, the canonical biplot (CB) method (Vicente‐Villardón, 1992; Gower and Hand, 1996) is used to determine the origin, distribution, conservation and pollution state of the different types of stones used in the construction and restoration of monuments of great historical interest. The stone materials (sandstones) used in the Cathedral of Ciudad Rodrigo (Salamanca, Spain) have been used to assess the usefulness of the method. The age of this monument (eight centuries), together with the surrounding environmental conditions, have especially contributed to the pollution of the stone masonries, in comparison to the same stones identified in the original quarries. The CB method has allowed us to: (a) identify the sandstone varieties used in the construction; (b) locate the original quarries of these sandstones; (c) locate these materials in the building, and (d) detect the pollution and deterioration affecting the stones in the monument, in comparison to the stones of the original quarries. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
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Nicole H. Augustin Verena M. Trenkel Simon N. Wood Pascal Lorance 《Environmetrics》2013,24(2):109-119
Fishery catch data offer a rich potential source of information for management, if modelling can separate out the effects of fishing effort, species behaviour and population abundance. Here, we model catch data from the blue ling fishery off the northwest coast of Scotland, using generalised additive mixed models with a space time interaction represented via a novel tensor product of a soap film smooth of space with a penalized regression spline of time. The use of soap film smoothers avoids imposing correspondences between spatially adjacent areas that are in fact separated by the stock boundary. The comparison of the performance of the soap film smooth for space–time with that of a thin plate regression spline based on root mean squared prediction errors and k‐means cross‐validation suggests that in this application, the former is better overall and in particular for modelling local changes. Further, a model with continuous space‐year interaction performed better compared with one with an additive space‐year effect. After model selection, checking and validation, there is evidence for increasing blue ling abundance from 2000–2010 in some spatial locations. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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T. Quibel B. Deloison F. Chammings G. E. Chalouhi N. Siauve M. Alison B. Bessières J. L. Gennisson O. Clément L. J. Salomon 《黑龙江环境通报》2015,35(11):1106-1111
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