Bibliographic record
Abstract
The Pattullo Bridge was completed in 1937, and serves as a major link between the communities of New Westminster and Surrey in the Metro Vancouver Area, carrying up to 70,000 vehicles per day, which is a significant portion of all traffic crossing the Fraser River. During construction of the bridge 3 timber spans were added to the Surrey end in place of 18m of granular embankment due to the excessive settlements experienced during construction. In 2007 TransLink identified the timber spans as requiring replacement due to their age, condition and susceptibility to fire damage, and had hired Buckland & Taylor in early 2008 to prepare a design for their replacement. On January 18, 2009 the timber spans were destroyed by fire, completely closing the bridge to all traffic (car, truck, pedestrian and cyclist) and disrupting the movement of goods and people throughout a large portion of the Metro Vancouver area. Post-fire demolition and disposal of the structure was complicated by the fact that the timbers were treated with creosote, and that the asphalt wearing surface of the bridge potentially contained asbestos. Within 8 days of the fire the damaged timber structure was demolished, and a replacement structure was located, re-engineered, modified, installed and opened to traffic.
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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.092 | 0.013 |
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".