The life and death of <i>g<sub>c</sub></i>: The changeover to si and the declining use of <i>g<sub>c</sub></i> in chemical engineering textbooks
Bibliographic record
Abstract
Abstract Thirty years ago, an editorial on metrology in the March 1971 issue of AlChE Journal noted the following: “Recognizing the inevitable, the AlChE Journal will require that all papers submitted after July 1, 1971 conform in notation to the SI System (Système International d'Unités)”. This decision was the starting point for the gradual introduction of the use of the SI System in chemical engineering textbooks, at a substitute for the preceding British System. As a consequence, the use of the gc conversion factor has been also diminishing, gradually but at a slower pace In this paper, the changeover to SI and the declining use of gc in chemical engineering textbooks is analyzed. Firstly, some representative books published before 1971 are studied. Secondly, a special analysis is devoted to transport phenomena books. Finally, a few but significant books published since 1971, have been selected in order to carry out the analysis of the changeover to SI System and the evolution of the use of gc
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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 | 0.001 | 0.006 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.004 |
| Science and technology studies | 0.002 | 0.004 |
| Scholarly communication | 0.005 | 0.003 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.003 |
| Insufficient payload (model declined to judge) | 0.006 | 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".