{"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":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001900932,0.0001904061,0.0001991827,0.0003113854,0.0001052171,0.00002958807,0.0001642558,0.00009934985,0.0002104417],"category_scores_gemma":[0.00005034814,0.00018727,0.00002498201,0.0004637904,0.00009123749,0.0001813829,0.000021743,0.0002807206,0.00004805435],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0006238761,"about_ca_system_score_gemma":0.0002899195,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.003551334,"about_ca_topic_score_gemma":0.004263151,"domain_scores_codex":[0.9986631,0.00001177376,0.0002513489,0.0001944802,0.0002883119,0.0005909424],"domain_scores_gemma":[0.9990206,0.00007897243,0.00003951024,0.0003042643,0.0002013493,0.0003552608],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"simulation_or_modeling","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.00004974245,0.000009726947,0.003637208,0.000241948,0.00004368297,0.00006383849,0.0006550885,0.9077594,0.08319394,0.00002255392,0.0007357186,0.003587149],"study_design_scores_gemma":[0.0006991994,0.0001746241,0.009798376,0.0002129123,0.00005473588,0.00008595522,0.00131051,0.9858002,0.001385711,0.00001340651,0.0001146042,0.0003497386],"study_design_candidate":"simulation_or_modeling","study_design_consensus":"simulation_or_modeling","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9640552,0.00006811164,0.03055835,0.00004170386,0.0002380194,0.0002481397,0.00001998746,0.00009192006,0.004678597],"genre_scores_gemma":[0.9985752,0.0001025405,0.0007384745,0.00004093149,0.0001359943,0.00001936968,0.00001911607,0.00006434847,0.0003040002],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.08180822,"threshold_uncertainty_score":0.763665,"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."}}