{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:7QUFDCXN67NKAQY3APS5JZINUM","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":"d1ddecd47c6fc66b5da4e040fa9ba24f1f46fa7a9cfc8ea7a4c38f85f8df20d1","cross_cats_sorted":["nlin.AO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-01T12:24:16Z","title_canon_sha256":"4518ccfcff4481223ba05575a4cd20ce1c71e509dd5bc45acdf6a3beaaa7f826"},"schema_version":"1.0","source":{"id":"1803.00337","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.00337","created_at":"2026-05-18T00:00:57Z"},{"alias_kind":"arxiv_version","alias_value":"1803.00337v3","created_at":"2026-05-18T00:00:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00337","created_at":"2026-05-18T00:00:57Z"},{"alias_kind":"pith_short_12","alias_value":"7QUFDCXN67NK","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"7QUFDCXN67NKAQY3","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"7QUFDCXN","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:2426efbe83b4ea612b3b2355e0361069530101d5a79bd98ae41e99bff564cf69","target":"graph","created_at":"2026-05-18T00:00:57Z","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":"We investigate flow-driven amoeboid motility as exhibited by microplasmodia of Physarum polycephalum. A poroelastic two-phase model with rigid boundaries is extended to the case of free boundaries and substrate friction. The cytoskeleton is modeled as an active viscoelastic solid permeated by a fluid phase describing the cytosol. A feedback loop between a chemical regulator, active mechanical deformations, and induced flows gives rise to oscillatory and irregular motion accompanied by spatio-temporal contraction patterns. We cover extended parameter regimes of active tension and substrate fric","authors_text":"Dirk Alexander Kulawiak, Harald Engel, Jakob L\\\"ober, Markus B\\\"ar","cross_cats":["nlin.AO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-01T12:24:16Z","title":"Oscillatory motion of a droplet in an active poroelastic two-phase model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00337","kind":"arxiv","version":3},"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":"sha256:6dad8e47fedbb2836bb50279cd9ecc253119f4c8483a5ae5fec1cc279bc8c7e7","target":"record","created_at":"2026-05-18T00:00:57Z","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":"d1ddecd47c6fc66b5da4e040fa9ba24f1f46fa7a9cfc8ea7a4c38f85f8df20d1","cross_cats_sorted":["nlin.AO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-01T12:24:16Z","title_canon_sha256":"4518ccfcff4481223ba05575a4cd20ce1c71e509dd5bc45acdf6a3beaaa7f826"},"schema_version":"1.0","source":{"id":"1803.00337","kind":"arxiv","version":3}},"canonical_sha256":"fc28518aedf7daa0431b03e5d4e50da3172857cbeb0a4ad8c5fefe11ce2ea095","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc28518aedf7daa0431b03e5d4e50da3172857cbeb0a4ad8c5fefe11ce2ea095","first_computed_at":"2026-05-18T00:00:57.263798Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:57.263798Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TvYdHXmNuqdVIcKTyT2FuF9Fg3QMH0XsS9h1rHiMJT0nQTb6GRJSjc5M88E8NO7wktA+zajZKy9qYSXZWdHoAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:57.264426Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.00337","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6dad8e47fedbb2836bb50279cd9ecc253119f4c8483a5ae5fec1cc279bc8c7e7","sha256:2426efbe83b4ea612b3b2355e0361069530101d5a79bd98ae41e99bff564cf69"],"state_sha256":"a7d1fdb11c344170c66c9b6dbcea38dd5927975b6fc31994c355fcdd575572c1"}