{"id":"W1957732037","doi":"","title":"Acoustic attenuation performance of double expansion chamber silencers with interconnecting tube","year":2001,"lang":"en","type":"article","venue":"Canadian acoustics","topic":"Acoustic Wave Phenomena Research","field":"Engineering","cited_by":1,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Silencer; Expansion chamber; Attenuation; Substructure; Acoustic attenuation; Tube (container); Acoustics; Inlet; Materials science; Boundary element method; Finite element method; Structural engineering; Physics; Engineering; Mechanics; Optics; Mechanical engineering; Composite material","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":true,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0003992249,0.0005922393,0.0004977303,0.000305108,0.0001971316,0.0005046095,0.0005744934,0.0006558291,0.001176857],"category_scores_gemma":[0.0009725278,0.0003342993,0.0005464191,0.00014728,0.0003588331,0.0004200107,0.0002962722,0.0003114675,0.0007556493],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0004418496,"about_ca_system_score_gemma":0.0002904061,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.003084641,"about_ca_topic_score_gemma":0.002746076,"domain_scores_codex":[0.9996825,0.00004272713,0.0000181322,0.00004867953,0.0001638184,0.0000440987],"domain_scores_gemma":[0.9994887,0.0002849185,0.00009755071,0.00003128956,0.0000723129,0.00002510341],"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":[0.0006016489,0.00007641014,0.002949316,0.0001470221,0.00004902277,0.0002499769,0.000370954,0.2525074,0.7264498,0.0007017486,0.000196526,0.01570014],"study_design_scores_gemma":[0.00002555675,0.0005638794,0.002464794,0.00001519786,0.00005205668,0.0001176751,0.00006034247,0.6913379,0.3046841,0.00007747934,0.0005697206,0.00003132007],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9373937,0.0002760934,0.05982309,0.00003965685,0.00001968353,0.00001747743,0.00007724287,0.0005668154,0.001786269],"genre_scores_gemma":[0.9925439,0.0001524064,0.005353626,0.000007372066,0.000005092052,0.00001923638,0.0001033484,0.00005923387,0.001755779],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.003084641,"threshold_uncertainty_score":0.006133378,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01789233816922771,"score_gpt":0.2223525817086313,"score_spread":0.2044602435394035,"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."}}