{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:S2DCHJVZO4BPSW6XO7OFOYNF52","short_pith_number":"pith:S2DCHJVZ","schema_version":"1.0","canonical_sha256":"968623a6b97702f95bd777dc5761a5ee9b1abe219c622f8168ffc89af6d81d38","source":{"kind":"arxiv","id":"1801.06369","version":2},"attestation_state":"computed","paper":{"title":"An efficient shape parametrisation by free-form deformation enhanced by active subspace for hull hydrodynamic ship design problems in open source environment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.NA","authors_text":"Andrea Mola, Gianluigi Rozza, Marco Tezzele, Nicola Demo","submitted_at":"2018-01-19T11:21:06Z","abstract_excerpt":"In this contribution, we present the results of the application of a parameter space reduction methodology based on active subspaces to the hull hydrodynamic design problem. Several parametric deformations of an initial hull shape are considered to assess the influence of the shape parameters considered on the hull total drag. The hull resistance is typically computed by means of numerical simulations of the hydrodynamic flow past the ship. Given the high number of parameters involved - which might result in a high number of time consuming hydrodynamic simulations - assessing whether the param"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1801.06369","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-01-19T11:21:06Z","cross_cats_sorted":[],"title_canon_sha256":"b316648462aeff966f892dc9cbbd7462c27fe9c4057d3cd5b658893cb578ff9c","abstract_canon_sha256":"f6a6e21d478c8ad68a708f7a59d41f8d03f8b64c00a86c546df34414a7a8f711"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:19:41.209468Z","signature_b64":"RiAWbB9ErDA2KS4SnKhU3uMTcGavMrRgGxVC1ieGtpBzYYcOYxRgWAnqq+P6UzlG3Wi1ySrOJDxvH6/B2IPbDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"968623a6b97702f95bd777dc5761a5ee9b1abe219c622f8168ffc89af6d81d38","last_reissued_at":"2026-05-18T00:19:41.208764Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:19:41.208764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"An efficient shape parametrisation by free-form deformation enhanced by active subspace for hull hydrodynamic ship design problems in open source environment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.NA","authors_text":"Andrea Mola, Gianluigi Rozza, Marco Tezzele, Nicola Demo","submitted_at":"2018-01-19T11:21:06Z","abstract_excerpt":"In this contribution, we present the results of the application of a parameter space reduction methodology based on active subspaces to the hull hydrodynamic design problem. Several parametric deformations of an initial hull shape are considered to assess the influence of the shape parameters considered on the hull total drag. The hull resistance is typically computed by means of numerical simulations of the hydrodynamic flow past the ship. Given the high number of parameters involved - which might result in a high number of time consuming hydrodynamic simulations - assessing whether the param"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.06369","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1801.06369","created_at":"2026-05-18T00:19:41.208872+00:00"},{"alias_kind":"arxiv_version","alias_value":"1801.06369v2","created_at":"2026-05-18T00:19:41.208872+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.06369","created_at":"2026-05-18T00:19:41.208872+00:00"},{"alias_kind":"pith_short_12","alias_value":"S2DCHJVZO4BP","created_at":"2026-05-18T12:32:50.500415+00:00"},{"alias_kind":"pith_short_16","alias_value":"S2DCHJVZO4BPSW6X","created_at":"2026-05-18T12:32:50.500415+00:00"},{"alias_kind":"pith_short_8","alias_value":"S2DCHJVZ","created_at":"2026-05-18T12:32:50.500415+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/S2DCHJVZO4BPSW6XO7OFOYNF52","json":"https://pith.science/pith/S2DCHJVZO4BPSW6XO7OFOYNF52.json","graph_json":"https://pith.science/api/pith-number/S2DCHJVZO4BPSW6XO7OFOYNF52/graph.json","events_json":"https://pith.science/api/pith-number/S2DCHJVZO4BPSW6XO7OFOYNF52/events.json","paper":"https://pith.science/paper/S2DCHJVZ"},"agent_actions":{"view_html":"https://pith.science/pith/S2DCHJVZO4BPSW6XO7OFOYNF52","download_json":"https://pith.science/pith/S2DCHJVZO4BPSW6XO7OFOYNF52.json","view_paper":"https://pith.science/paper/S2DCHJVZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1801.06369&json=true","fetch_graph":"https://pith.science/api/pith-number/S2DCHJVZO4BPSW6XO7OFOYNF52/graph.json","fetch_events":"https://pith.science/api/pith-number/S2DCHJVZO4BPSW6XO7OFOYNF52/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/S2DCHJVZO4BPSW6XO7OFOYNF52/action/timestamp_anchor","attest_storage":"https://pith.science/pith/S2DCHJVZO4BPSW6XO7OFOYNF52/action/storage_attestation","attest_author":"https://pith.science/pith/S2DCHJVZO4BPSW6XO7OFOYNF52/action/author_attestation","sign_citation":"https://pith.science/pith/S2DCHJVZO4BPSW6XO7OFOYNF52/action/citation_signature","submit_replication":"https://pith.science/pith/S2DCHJVZO4BPSW6XO7OFOYNF52/action/replication_record"}},"created_at":"2026-05-18T00:19:41.208872+00:00","updated_at":"2026-05-18T00:19:41.208872+00:00"}