{"id":"W4378832541","doi":"10.20944/preprints202305.2066.v1","title":"All-Optical, Air-Coupled Ultrasonic Detection of Low-pressure Gas Leaks and Observation of Jet Tones in the MHz Range","year":2023,"lang":"en","type":"preprint","venue":"Preprints.org","topic":"Flow Measurement and Analysis","field":"Engineering","cited_by":4,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Alberta","funders":"Natural Sciences and Engineering Research Council of Canada; Alberta Innovates; Government of Alberta","keywords":"Broadband; Body orifice; Ultrasonic sensor; Acoustics; Jet (fluid); Attenuation; Turbulence; Range (aeronautics); Materials science; Optics; Physics; Mechanics; Engineering; Mechanical engineering","routes":{"ca_aff":true,"ca_fund":true,"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":[0.0002486069,0.0002522221,0.0001799739,0.0003274294,0.0001260033,0.0002241322,0.0003477434,0.000328698,0.0009205482],"category_scores_gemma":[0.0005906975,0.0001456606,0.00007140948,0.0002090429,0.0005073898,0.0004070195,0.0004229084,0.0002772176,0.0001250021],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001818807,"about_ca_system_score_gemma":0.00008957823,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.000397138,"about_ca_topic_score_gemma":0.0005277721,"domain_scores_codex":[0.9997217,0.00004390641,0.00001062916,0.0000643513,0.0001207416,0.00003870739],"domain_scores_gemma":[0.9996493,0.0001616559,0.00009095799,0.00002650676,0.00004601463,0.00002562614],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.00004833774,0.000007924373,0.0006822229,0.00003751226,0.000001895105,0.00003190274,0.00005152769,0.00009498385,0.9966221,0.00008020876,0.00001945099,0.002321874],"study_design_scores_gemma":[0.000008692177,0.0002260469,0.009155754,0.000006755712,0.00001079978,0.0002348528,0.00007086196,0.003462575,0.9859985,0.0001508296,0.0006610954,0.0000131753],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9800447,0.0005847123,0.01802325,0.00005500414,0.00001516006,0.00001565183,0.00007174331,0.000112057,0.001077609],"genre_scores_gemma":[0.9881681,0.0002339826,0.01060883,0.00005143521,0.00001409818,0.00001889548,0.00003451248,0.00001365396,0.0008564633],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.0009205482,"threshold_uncertainty_score":0.003079474,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.111214096726384,"score_gpt":0.2913944510084396,"score_spread":0.1801803542820556,"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."}}