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Quantifying the Contribution of Plant Breeders’Rights and Transgenic Varieties to Canola Yields: Evidence from Manitoba

2003· article· en· W2061208263 on OpenAlex

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.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
venuePublished in a venue whose home country is Canada.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.

Bibliographic record

VenueCanadian Journal of Agricultural Economics/Revue canadienne d agroeconomie · 2003
Typearticle
Languageen
FieldEconomics, Econometrics and Finance
TopicSpatial and Panel Data Analysis
Canadian institutionsAgriculture and Agri-Food Canada
Fundersnot available
KeywordsCanolaYield (engineering)Genetically modified cropsComplement (music)Diversity (politics)BiotechnologyAgronomyBiologyTransgenePolitical science

Abstract

fetched live from OpenAlex

Canola yield functions that account for plant breeders’rights, changes in technology, measures of varietal diversity and environmental conditions are estimated for the province of Manitoba for the period 1995–2001. Various measures are employed to estimate the effect of plant breeders’rights (PBR) on canola yields. Panel data models, which allow for differences in behavior over cross‐sectional units at the same point in time as well as differences in behavior over time for a given cross‐sectional unit, are used for the analysis. The performance of canola yield response functions are superior with random effects models. The adoption of transgenic varieties and varieties qualifying for PBR are positively associated with increasing yields. The policy implication of this study is that a greater commitment of public funds to fundamental research may be necessary to complement the applied research that private companies are undertaking in producing finished varieties.

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 imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.632
Threshold uncertainty score0.921

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.064
GPT teacher head0.179
Teacher spread0.114 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it