Shipping line networks and the integration of South America trades
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
One recent transformation of liner shipping is the entry of leading carriers into north-south markets. This paper aims to test the commonly held proposition that global shipping lines entered north-south markets to feed more cargo on their established east-west services. This proposition arises out of: (1) predominant models of transport networks evolution which emphasize the influence of hubs, and (2) lines' strategy of commissioning larger vessels for east-west routes. In this perspective, the expansion of networks to southern economies serves specifically to bring more cargo on main routes to ensure volumes are sufficient to generate the desired economies of scale. This paper analyses the changing configurations of South American services. Results show that by 1999 leading shipping lines were offering direct services to all major trade ranges from the region, and numerous US loops were added to the already established European and Asian services. These new services involved multiple ports in the US; running in parallel with east-west services over a large part of the American coasts. The paper concludes that global shipping lines entered the South American market by setting up services typically configured to serve trades between North and South America; not to feed established main routes.
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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) | 0.000 | 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