Bibliographic record
Abstract
ABSTRACT Once upon a time we cleaned virtually all circuit assemblies. That was until the discovery that certain Chlorofluorocarbons (CFC's) contributed to the loss of the ozone layer. The industry's most popular cleaning solvents, used to remove flux after soldering, contained CFC's. Eventually (in 1985), an international treaty known as the Montreal Protocol was signed (Figure 1), and our industry witnessed the elimination of many CFC-based cleaning solvents. Necessity being the mother of invention, alternate cleaning materials and methods were introduced. While these alternate materials and methods would prove effective, they paled in comparison to another technology introduced at the same time. This technology promised to eliminate the cleaning process altogether. This was the birth of “no-clean” flux. A flux that left behind very little residue, so little in fact, the assembly would not require cleaning. It's interesting to note that the Montreal Protocol is one of only two treaties ratified by all United Nations Member Countries.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.002 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.006 | 0.019 |
| Scholarly communication | 0.009 | 0.012 |
| Open science | 0.001 | 0.009 |
| Research integrity | 0.004 | 0.009 |
| Insufficient payload (model declined to judge) | 0.021 | 0.006 |
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".