Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Bob joined the cosmochemistry community during the Apollo program during the late 1960s, where he started measuring oxygen isotopes ( 18 O) in ordinary chondrites. He is best known for his discovery of oxygen isotope variability in calcium-aluminum-rich inclusions (CAIs) with his now-classic 1973 paper that launched a new stage of his career. Bob's superb three-isotope oxygen isotopic analyses so dominated the field that he established an isotopic classification of solar system materials and analyzed every new meteorite for 25 years with no competition, all with a late-1950s mass spectrometer equipped with a chart recorder, a ruler, and a pocket calculator. He developed O, N and Si isotope studies of lunar samples and meteorites by gas source mass spectrometry with Toshiko Mayeda (his long-term research associate from 1958 to 2004), Richard Becker, Mark Thiemens, and many other students and postdocs. His studies (with Typhoon Lee and Gerry Wasserburg) led to the recognition of fractionated unknown nuclear (FUN) isotopic anomalies in CAIs. In 1977, with Ian Hutcheon, Richard Hinton and Andy Davis, he pioneered secondary ion mass spectrometry (SIMS) techniques applied to in situ Al-Mg systematics of CAIs and chondrules. Bob, with Michael Pellin and Andy Davis, initiated an effort to develop resonance ionization mass spectrometry for cosmochemistry that led to the isotopic analysis of Ba, Sr, Ru, Fe, and other elements within individual pre-solar SiC grains. This launched a new form of laboratory-based nuclear astrophysics. After retirement, Bob's note on self-shielding (2002) marked a major departure from his previous thinking on a variety of topics: he realized that NASA's Genesis mission could yield a key piece of the solar system's oxygen puzzle, and initiated the still-ongoing debate on the role of photochemical effects in producing the solar system's oxygen isotope variability.
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.
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) | 0.003 | 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