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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 461 to 470 of 4110 (0.019 seconds)| 461 |
Interpretation of Cross Correlation Between Tree-Ring SeriesYamaguchi, David K. January 1986 (has links)
No description available.
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| 462 |
A Model for Tree-Ring Time Series to Detect Regional Growth Changes in Young, Evenaged Forest StandsZahner, Robert January 1988 (has links)
Time-related region-wide growth declines or increases due to environmental impacts are not readily detected in rings of young trees because the intrinsic age-related decrease in ring widths is too prominent. Standardization techniques often obscure gradual growth changes due to exogenous factors such as regional atmospheric deposition. The model presented here uses a linear aggregate analysis of ring widths that permits age to be held constant while time varies. Rigorous testing requires tree-ring observations from evenaged stands exhibiting a range of current ages normal for the species and region. With age held constant, the key variable is simply the calendar year to which given rings are dated, a measure of the passage of time. An application of the model is given in which a 36 -year growth decline is identified in 20- to 40- year-old Pinus taeda L. in the southeastern United States.
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| 463 |
Detection of Atypical Years in the Tree-Ring Series by Construction of a Temporal Walk in the Principal Components PlanesDutilleul, Pierre, Till, Claudine January 1989 (has links)
The purpose of this paper is to introduce a method for identifying years of anomalous radial growth, which are called atypical years and are characterized by particularly narrow rings for certain trees or sites, and wide for the others. With this aim, we use principal components analysis (PCA) of tree -ring series, where years are the variables and trees or sites are the individuals, even though in classical dendrochronological applications of PCA, the trees or sites are considered as variables and the years as cases. The relevant method is explained and results are given for five cedar forests (Cedrus atlantica (Endl.) Carrière) in Morocco.
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| 464 |
Ecological management strategies for western Irish oakwoodsService, Andrea Katharina January 2002 (has links)
No description available.
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| 465 |
Safety-directed system monitoring using safety casesPapadopoulos, Yiannis January 2000 (has links)
No description available.
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| 466 |
Nitrogen transformations in an acid forest soilBrierley, Euan January 1989 (has links)
No description available.
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| 467 |
High-density planting system for Bramley's seedling apple treesAgha, N. S. A. January 1986 (has links)
No description available.
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| 468 |
Statistical methods in dendrochronologyOkasha, Mahmoud Khaled Mohamed January 1987 (has links)
No description available.
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| 469 |
Regulating interactions of pine aphid colonies (Schizolachuns pineti fabr.) and host plant growthLewis, G. B. January 1987 (has links)
No description available.
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| 470 |
The effects of waterlogging on young apple treesAl-Husainy, A. Q. M. January 1986 (has links)
No description available.
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