EUROMET Project 432: Frequency performance of 12 906 and 6453 reference resistors for ac quantum Hall effect experiments
Bibliographic record
Abstract
The Czech Technical University (CTU), acting as pilot laboratory in an international comparison, has fabricated and provided as transfer standards four terminal-pair thermostatted travelling resistance standards with nominal values of 12906 Ω and 6453 Ω. Vishay S 102 K resistors form the resistive elements of these standards and 100 Ω platinum resistance thermometers make it possible to monitor their inner temperature. The laboratories participating in the comparison (five in Europe and one in Canada) were requested to measure the frequency dependences and time constants of the travelling standards by comparing them with resistors with calculable frequency performance. Calculable resistors of several different designs (monofilar, bifilar, quadrifilar and octofilar) were available. For both travelling standards, the ac-dc differences of the parallel equivalent resistance, as reported by the different laboratories, are within 13 parts in 108 at 500 Hz and 70 parts in 108 at 5000 Hz. The reported time constants differ by less than 3.9 ns and 4.8 ns, respectively.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.006 | 0.005 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.011 | 0.002 |
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 source (direct Gemma or distilled Codex), 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".