Slip Temperature Differential and Usage: Ballasted and Direct Fixation Tracks
Why this work is in the frame
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Bibliographic record
Abstract
This paper analyzes the slip temperature differential in a railway track. The formula for the slip temperature differential in a ballasted track from Lichtberger was used to derive alternate formulas in terms of longitudinal resistance and the sectional area of a rail for both ballasted and direct fixation tracks. Additionally, the formula form Esveld for the maximum slip of a rail in a fastener under elastic shear resistance was rearranged and reformulated to obtain the slip temperature differential in terms of longitudinal resistance and the sectional area of a rail for both ballasted and direct fixation tracks. The aforementioned formulas were compared, and some interesting findings were drawn after their application. The slip temperature differential was used to compute the rail neutral temperature range for natural distressing. Finally, the Transit Cooperative Research Programs’ procedure for estimating the longitudinal resistance in a direct fixation track was analyzed, and a review was called for.
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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 | 0.000 | 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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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