{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:CZTTR5VMBMECH4IPHEIIB2M4SL","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":"7ddaf13c6162184e0a2d29c191f97b20cc2e3f783dd3164be31467198578aee0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2011-12-22T15:19:44Z","title_canon_sha256":"760672cc3a86937ecc17403dfabc87325c7a6883f4bea5b5743b51262ed014d2"},"schema_version":"1.0","source":{"id":"1112.5349","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.5349","created_at":"2026-05-18T03:54:14Z"},{"alias_kind":"arxiv_version","alias_value":"1112.5349v2","created_at":"2026-05-18T03:54:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.5349","created_at":"2026-05-18T03:54:14Z"},{"alias_kind":"pith_short_12","alias_value":"CZTTR5VMBMEC","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"CZTTR5VMBMECH4IP","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"CZTTR5VM","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:7219fe9d7bb348da82ba457d05b1e046aa2815aa0e37517611ebe7d79f354e58","target":"graph","created_at":"2026-05-18T03:54:14Z","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 calculation of transport profiles from experimental measurements belongs in the category of inverse problems which are known to come with issues of ill-conditioning or singularity. A reformulation of the calculation, the matricial approach, is proposed for periodically modulated experiments, within the context of the standard advection-diffusion model where these issues are related to the vanishing of the determinant of a 2x2 matrix. This sheds light on the accuracy of calculations with transport codes, and provides a path for a more precise assessment of the profiles and of the related un","authors_text":"D. F. Escande, F. Sattin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2011-12-22T15:19:44Z","title":"Calculation of transport coefficient profiles in modulation experiments as an inverse problem"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.5349","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":"sha256:5f674e3d463c30fc9b0193306706b6dcbb365acdb7b65f297b21964711ef1e0f","target":"record","created_at":"2026-05-18T03:54:14Z","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":"7ddaf13c6162184e0a2d29c191f97b20cc2e3f783dd3164be31467198578aee0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2011-12-22T15:19:44Z","title_canon_sha256":"760672cc3a86937ecc17403dfabc87325c7a6883f4bea5b5743b51262ed014d2"},"schema_version":"1.0","source":{"id":"1112.5349","kind":"arxiv","version":2}},"canonical_sha256":"166738f6ac0b0823f10f391080e99c92d26e0f407794ecc137245531a3749f73","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"166738f6ac0b0823f10f391080e99c92d26e0f407794ecc137245531a3749f73","first_computed_at":"2026-05-18T03:54:14.949061Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:54:14.949061Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RJtRKQHm3axN+p6YgN6izHvE+NrkYj2hG9MZkexbE3cURzpbBEDx//Nr8psJMetRdqz65aHi5ywm8fgGfFkOBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:54:14.949643Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.5349","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f674e3d463c30fc9b0193306706b6dcbb365acdb7b65f297b21964711ef1e0f","sha256:7219fe9d7bb348da82ba457d05b1e046aa2815aa0e37517611ebe7d79f354e58"],"state_sha256":"b4aad364f89e114caef8693204d4f11461e98e44d0679611b99d0247cc4068d8"}