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Record W7144153405 · doi:10.34444/00000092

牛肉の国際貿易の構造変化とその影響─AGLINKモデルを利用したシナリオ分析─

2005· article· ja· W7144153405 on OpenAlexaboutno aff
Atsuyuki Uebayashi

Bibliographic record

VenueInstitutional Repositories DataBase (IRDB) · 2005
Typearticle
Languageja
FieldEconomics, Econometrics and Finance
TopicEconomics of Agriculture and Food Markets
Canadian institutionsnot available
Fundersnot available
KeywordsBaseline (sea)Beef industryAgribusinessAgricultureEconomic impact analysisDatabase transaction

Abstract

fetched live from OpenAlex

The first case of BSE (Bovine Spongiform Encephalopathy) outbreak in North American countries, namely of Canada on 20 May 2003, and of USA on 23 December 2003, have been confirmed. Japan, the largest importer of US beef, and many other countries immediately set import ban on US beef. In Japanese beef market, USA was a very important supplier, which accounted for about 30 per cent of total beef supply. Therefore, the immediate ban on import brought substantial boost of beef price in Japan. Among all, the restaurant and eatingout industries are in difficulties, as they rely heavily on US beef for raw material. For analysing the impact of the break of US beef export to the Pacific Beef Market that includes Japan, I carried out a scenario analysis by using AGLINK model, that is a global supply and demand model for agricultural products, which was developped by OECD (The Organisation of Economic Cooperation and Development), with the cooperation of its member countries. I used the 2003 baseline model as benchmark, and modified it so that it could reflect the structural change in beef market after the breakout of BSE in Canada and USA. Then I run these two models and compared the generated results with the baseline towards 2008. I assumed that the beef export of Canada and USA to outside the NAFTA (the North American Free Trade Agreement) countries would totally stop in year 2004 and 2005. According to this scenario analysis, in the years of beef export ban of Canada and USA (which are year 2004 and 2005), the international beef price would substantially rise, and other beef exporters, i.e., Austraria and New Zealand would benefit substantially from the ban. On the other hand, US internal beef price would decrease by oversupply. The large importers like Japan and Korea, the demand for beef would decrease, due to the hike of beef price, and demand for pigmeat and chikenmeat would increase as a result of substitution effect. Beef producers of these importing countries would benefit from the hike of beef price, however, the responses to the market are diverse, i.e., some countries would increase slaughter of cows and increase supply of beef, but other countries would decrease slaughter and keep cows for more price increase in the future.

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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.170
Threshold uncertainty score0.339

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.001
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0010.001
Open science0.0010.000
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0050.001

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.

Opus teacher head0.020
GPT teacher head0.215
Teacher spread0.195 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2005
Admission routes1
Has abstractyes

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