3.4.2 Laboratory Methods
Bibliographic record
Abstract
Laboratory measurement of saturated soil water flow parameters is frequently limited to the determination of saturated hydraulic conductivity (Ks). The primary factors affecting Ks in a laboratory environment include the texture and structure of the soil core or column, the temperature of the water, the ionic speciation and concentrations in the water, and the presence of air bubbles in soil pores. The Ks value tends to increase greatly with coarser texture and enhanced structure because of an increase in the number and size of large, highly water-conductive pores. Consequently, coarse-textured and/or structured porous media tend to have larger Ks values than fine-textured and/or structureless porous media. This chapter discusses method for determining Ks such as constant head soil core (Tank) method; falling head soil core (Tank) method; steady flow soil column method and other laboratory methods.
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How this classification was reachedexpand
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.007 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".