The Ogallala Aquifer in Nebraska: Gray Literature (1891–2010)
Bibliographic record
Abstract
The Ogallala Aquifer is a key water resource for several U. S. states. TransCanada, a Canadian company, proposes to construct the Keystone XL pipeline to transport tar sands crude oil from Alberta to refineries in Texas; one proposed route would bury the pipeline in the Aquifer, raising water quality and environmental concerns. A rich inventory of information about the Aquifer predates the current controversy. This article presents a key subset of an extensive, ongoing bibliography: 128 citations to gray literature about the Ogallala Aquifer in Nebraska, which are inaccessible online and/or held in only a few libraries. The authors present several examples to illustrate the relevance of this gray literature to current events, comment on difficulties encountered during the bibliographic harvest and the identification of this subset, and reiterate the need for planned preservation through digitization of historical (print) gray literature.
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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.013 | 0.021 |
| Science and technology studies | 0.006 | 0.003 |
| Scholarly communication | 0.004 | 0.003 |
| Open science | 0.000 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
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".