MECHANICAL PROPERTIES IN RELATION TO SELECTED WOOD CHARACTERISTICS OF BLACK SPRUCE
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Bibliographic record
Abstract
The relation between ring width, ring density, microfibril angle, and bending properties was analyzed at 2.4-m height on twelve 80-year-old black spruce trees.The moduli of elasticity and rupture were measured in the southernmost radial direction on extracted specimens of size 10 10 150 mm 3 from pith to bark.Ring density and ring width were measured by X-ray densitometry, and microfibril angle was measured by the Silviscan technology.The impact of these three traits on the moduli of elasticity and rupture was evaluated by explicitly separating the radial variation from the variation among trees using a mixed model analysis.The results obtained show first that the modulus of elasticity is negatively correlated to microfibril angle.This result supports the assumption that the relation between modulus of elasticity and microfibril angle is not dependent on radial growth rate.Secondly, ring density has a lower contribution in predicting the modulus of elasticity than the modulus of rupture.In both cases, ring width was not a significant factor of variation of the moduli of elasticity and rupture.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.004 |
| Science and technology studies | 0.000 | 0.002 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it