{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VWILEVFK3AS2CEXYSQW6CRTWFM","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"6ca9dd40dec7a43b9657baba048a46f94f1a0c84feae75c049645e2229abc851","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2018-04-09T12:14:47Z","title_canon_sha256":"9b3916c13d16f5db852c0df018e8ded29380aeddaad66c8fdba742d5d37b9e1f"},"schema_version":"1.0","source":{"id":"1804.02933","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.02933","created_at":"2026-05-18T00:17:18Z"},{"alias_kind":"arxiv_version","alias_value":"1804.02933v2","created_at":"2026-05-18T00:17:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.02933","created_at":"2026-05-18T00:17:18Z"},{"alias_kind":"pith_short_12","alias_value":"VWILEVFK3AS2","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VWILEVFK3AS2CEXY","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VWILEVFK","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:350f5c7add2a9f8dfc0ecba915a949fe45d3e1ead88731596f5935a77becb1a4","target":"graph","created_at":"2026-05-18T00:17:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The mixing efficiency of a plume in a filling box and an emptying-filling box is calculated for both transient and steady states. The mixing efficiency of a plume in a filling box in an asymptotic steady state is 1/2, independent of the details of this state or how the plume is modelled. The mixing efficiency of a plume in an emptying-filling box in steady state is 1 - xi, where xi = h/H, the depth of the ambient layer h non-dimensionalised by the height of the box H. A deeper mixed layer therefore corresponds to a higher mixing efficiency.","authors_text":"Charlie Hogg, Graham O. Hughes, Jamie Partridge, Megan S. Davies Wykes","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2018-04-09T12:14:47Z","title":"Energetics of mixing for the filling box and the emptying-filling box"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.02933","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5f4d47b8bc296ad8f12acb2cd1dd4ec1c1c9b21e3c5b669f9084da1f5d905848","target":"record","created_at":"2026-05-18T00:17:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"6ca9dd40dec7a43b9657baba048a46f94f1a0c84feae75c049645e2229abc851","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2018-04-09T12:14:47Z","title_canon_sha256":"9b3916c13d16f5db852c0df018e8ded29380aeddaad66c8fdba742d5d37b9e1f"},"schema_version":"1.0","source":{"id":"1804.02933","kind":"arxiv","version":2}},"canonical_sha256":"ad90b254aad825a112f8942de146762b3a7ddcad49dce7a15d0a121a3599226f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ad90b254aad825a112f8942de146762b3a7ddcad49dce7a15d0a121a3599226f","first_computed_at":"2026-05-18T00:17:18.386623Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:17:18.386623Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hiak88uPh5jx0CByLUaSU0ms06wUO1TxQeifAUGzRvRkIQMHBz1upcX8EsJd7P8hik7pK+TWg7z/Wq/d0rgLBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:17:18.387086Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.02933","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f4d47b8bc296ad8f12acb2cd1dd4ec1c1c9b21e3c5b669f9084da1f5d905848","sha256:350f5c7add2a9f8dfc0ecba915a949fe45d3e1ead88731596f5935a77becb1a4"],"state_sha256":"250d878de1eac8b41e0e9e83fc5ce56e104243a929c7b2d8e88a037614eeaf44"}