A nonlinear simultaneous equation model to determine taper curve.
In the original set of equations derived by regression analysis, relative-height diameters (endogenous variables) are presented as nonlinear functions of the other relative-height diameters and of the height of the tree (an exogenous variable). Any of the original equations can be replace...
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| Format: | Article |
| Language: | English |
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Finnish Society of Forest Science
1979-01-01
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| Series: | Silva Fennica |
| Online Access: | https://www.silvafennica.fi/article/5047 |
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doaj-684800b5f8ed40dab99ba5891e34e2ae2020-11-25T02:44:23ZengFinnish Society of Forest ScienceSilva Fennica2242-40751979-01-0113410.14214/sf.a14904A nonlinear simultaneous equation model to determine taper curve.Kilkki, PekkaVarmola, Martti In the original set of equations derived by regression analysis, relative-height diameters (endogenous variables) are presented as nonlinear functions of the other relative-height diameters and of the height of the tree (an exogenous variable). Any of the original equations can be replaced by an interpolation formula which links a measured diameter to the four closest relative-height diameters. The solution of the simultaneous equation model yields 10 relative-height diameters. Intermediate values are obtained to avoid biases due to the nonlinearity of the simultaneous model equations. The PDF includes a summary in Finnish.https://www.silvafennica.fi/article/5047 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Kilkki, Pekka Varmola, Martti |
| spellingShingle |
Kilkki, Pekka Varmola, Martti A nonlinear simultaneous equation model to determine taper curve. Silva Fennica |
| author_facet |
Kilkki, Pekka Varmola, Martti |
| author_sort |
Kilkki, Pekka |
| title |
A nonlinear simultaneous equation model to determine taper curve. |
| title_short |
A nonlinear simultaneous equation model to determine taper curve. |
| title_full |
A nonlinear simultaneous equation model to determine taper curve. |
| title_fullStr |
A nonlinear simultaneous equation model to determine taper curve. |
| title_full_unstemmed |
A nonlinear simultaneous equation model to determine taper curve. |
| title_sort |
nonlinear simultaneous equation model to determine taper curve. |
| publisher |
Finnish Society of Forest Science |
| series |
Silva Fennica |
| issn |
2242-4075 |
| publishDate |
1979-01-01 |
| description |
In the original set of equations derived by regression analysis, relative-height diameters (endogenous variables) are presented as nonlinear functions of the other relative-height diameters and of the height of the tree (an exogenous variable). Any of the original equations can be replaced by an interpolation formula which links a measured diameter to the four closest relative-height diameters. The solution of the simultaneous equation model yields 10 relative-height diameters. Intermediate values are obtained to avoid biases due to the nonlinearity of the simultaneous model equations. The PDF includes a summary in Finnish. |
| url |
https://www.silvafennica.fi/article/5047 |
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