{"id":"W4406203718","doi":"10.1016/j.resourpol.2025.105460","title":"The transient sand frontier: Senegal's moving sand procurement strategies","year":2025,"lang":"en","type":"article","venue":"Resources Policy","topic":"Water Governance and Infrastructure","field":"Social Sciences","cited_by":2,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Ottawa","funders":"","keywords":"Transient (computer programming); Frontier; Procurement; Business; Environmental science; Geology; Geotechnical engineering; Geography; Computer science; Archaeology","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":[0.0009001881,0.0003729236,0.0001765907,0.0009698619,0.004750725,0.003166387,0.0005899935,0.0005742722,0.008192721],"category_scores_gemma":[0.0008270761,0.0002139394,0.000201437,0.001718383,0.003317195,0.002039313,0.004683856,0.0007755655,0.0003548295],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00799433,"about_ca_system_score_gemma":0.007083787,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.1110389,"about_ca_topic_score_gemma":0.2842991,"domain_scores_codex":[0.9993414,0.0001694914,0.00001449103,0.00005814703,0.00004712053,0.0003691779],"domain_scores_gemma":[0.9997286,0.00007062454,0.00004265483,0.00002488981,0.0000471583,0.00008602465],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"qualitative","study_design_scores_codex":[0.0005305183,0.000199202,0.1317102,0.0005007415,0.000112045,0.01557807,0.1180778,0.00831672,0.01410982,0.4740524,0.01103337,0.2257791],"study_design_scores_gemma":[0.00005250765,0.0003387748,0.187614,0.0005109874,0.00005763923,0.001984526,0.4805085,0.00303377,0.004058089,0.03900124,0.2826879,0.000152017],"study_design_candidate":"qualitative","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.902342,0.0007095221,0.001624143,0.004502831,0.00002110513,0.00007968867,0.0001345388,0.00002739643,0.09055877],"genre_scores_gemma":[0.9923103,0.0003859831,0.0005178463,0.0002988945,0.000001491782,0.0000230502,0.00003869869,0.000007057806,0.006416607],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.1110389,"threshold_uncertainty_score":0.2207851,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.00690547049501578,"score_gpt":0.282921710657438,"score_spread":0.2760162401624223,"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."}}