{"public_id":"cl_b8aa0ecaa3b4c1a23b5f6fac0a1c3770","status":"active","superseded_by_public_id":null,"corpus_id":126677986,"text":"Lumped mass modification is used to preserve positivity in the numerical scheme.","confidence":0.95,"paper":{"corpus_id":126677986,"title":"Numerical simulations for the chemotaxis models on surfaces via a novel characteristic finite element method","url":"https://sah.borca.ai/papers/126677986"},"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.95,"origin_kinds":["extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":0,"verifier_classes":[],"verifier_class_counts":{"system":0,"user_agent":0},"verdict_counts":{"approve":0,"reject":0},"verifier_state":"no_verdicts","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_1286a9b068a9fd856d5d8f07c7093bf0","name":"positivity preservation","description":"The property that the numerical solution remains nonnegative.","types":["property"],"url":"https://sah.borca.ai/concepts/co_1286a9b068a9fd856d5d8f07c7093bf0"},{"public_id":"co_4e9f03d0c4aed6086ddc2d32085075c2","name":"semi-implicit finite element scheme","description":"A finite element discretization that treats some terms implicitly and others explicitly to solve the model numerically.","types":["numerical method"],"url":"https://sah.borca.ai/concepts/co_4e9f03d0c4aed6086ddc2d32085075c2"},{"public_id":"co_8483be99d38b290324a1946f35d4a6d3","name":"lumped mass modification","description":"A mass-lumping adjustment applied to the finite element scheme.","types":["numerical technique"],"url":"https://sah.borca.ai/concepts/co_8483be99d38b290324a1946f35d4a6d3"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_b8aa0ecaa3b4c1a23b5f6fac0a1c3770"}