{"id":"W2803548997","doi":"10.1080/03088839.2018.1468937","title":"Port system evolution – the emergence of second-tier hubs","year":2018,"lang":"en","type":"article","venue":"Maritime Policy & Management","topic":"Maritime Ports and Logistics","field":"Engineering","cited_by":22,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Manitoba","funders":"","keywords":"Diseconomies of scale; Port (circuit theory); Business; Industrial organization; Hierarchy; Process (computing); Tier 2 network; Economic geography; Economies of scale; Telecommunications; Marketing; Economics; Computer science; Engineering; Market economy","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.001432438,0.0002145712,0.0002320822,0.001408792,0.001389727,0.003260546,0.0006127383,0.00077509,0.007270947],"category_scores_gemma":[0.003164637,0.0002585028,0.000401279,0.0015683,0.001878898,0.004197601,0.002400986,0.0009357236,0.0005093628],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.002399339,"about_ca_system_score_gemma":0.001175849,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.009230313,"about_ca_topic_score_gemma":0.01088768,"domain_scores_codex":[0.9992818,0.0001450236,0.00003043832,0.0001421645,0.0001311486,0.0002693929],"domain_scores_gemma":[0.9978918,0.0004633876,0.0003238223,0.0004006727,0.0004725503,0.0004477561],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"theoretical_or_conceptual","study_design_scores_codex":[0.0004472731,0.0003230783,0.3727198,0.0002768088,0.0001361246,0.006373757,0.03250113,0.02426163,0.01384121,0.4093148,0.006472023,0.1333324],"study_design_scores_gemma":[0.00008731637,0.0007390151,0.6445237,0.0002563352,0.0001059082,0.004939201,0.06788943,0.08503143,0.007195572,0.06943936,0.1196158,0.000176931],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.946289,0.00009706955,0.01277893,0.0005812349,0.00001927084,0.00005943042,0.00009869695,0.0001446042,0.03993169],"genre_scores_gemma":[0.9966193,0.00003801625,0.001139684,0.00002814269,0.000003103868,0.000006917175,0.00004527748,0.00001059685,0.002108981],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.009230313,"threshold_uncertainty_score":0.02432376,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.008566850904155536,"score_gpt":0.2198125491200405,"score_spread":0.211245698215885,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}