{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:SCWVFA3POLRPPBJPW5PQO6AJVS","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":"5e4be9bdf32e0f4a08c65b5c0898c6f8a207add090142baf90315ab53391e3e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2013-11-01T14:43:58Z","title_canon_sha256":"bd104093b05ce1bbb814aeeeffca918adaaa993f0d8c404dcc1ff477ad54cada"},"schema_version":"1.0","source":{"id":"1311.0196","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.0196","created_at":"2026-05-18T01:46:39Z"},{"alias_kind":"arxiv_version","alias_value":"1311.0196v2","created_at":"2026-05-18T01:46:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.0196","created_at":"2026-05-18T01:46:39Z"},{"alias_kind":"pith_short_12","alias_value":"SCWVFA3POLRP","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"SCWVFA3POLRPPBJP","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"SCWVFA3P","created_at":"2026-05-18T12:27:59Z"}],"graph_snapshots":[{"event_id":"sha256:4c812da77c96d0a3b59a871b5518a48ffb686defc0e68fe7019af5c75577fc1b","target":"graph","created_at":"2026-05-18T01:46:39Z","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 Next Generation Science Standards (NGSS) require teachers to understand aspects of energy degradation and the second law of thermodynamics, including energy's availability and usefulness, changes in energy concentration, and the tendency of energy to spread uniformly. In an effort to develop learning goals that support teachers in building robust understandings of energy from their existing knowledge, we studied teachers' impromptu conversations about these topics during professional development courses about energy. Many of these teachers' ideas appear to align with statements from the NG","authors_text":"Abigail R. Daane, Rachel E. Scherr, Stamatis Vokos","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2013-11-01T14:43:58Z","title":"Goals for teacher learning about energy degradation and usefulness"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.0196","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:b4cc20c31c16902270b1271c2260be6ec04a4fd753456d364bbdb66d5d528bdc","target":"record","created_at":"2026-05-18T01:46:39Z","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":"5e4be9bdf32e0f4a08c65b5c0898c6f8a207add090142baf90315ab53391e3e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2013-11-01T14:43:58Z","title_canon_sha256":"bd104093b05ce1bbb814aeeeffca918adaaa993f0d8c404dcc1ff477ad54cada"},"schema_version":"1.0","source":{"id":"1311.0196","kind":"arxiv","version":2}},"canonical_sha256":"90ad52836f72e2f7852fb75f077809ac9a53ed5f284f3ead098e38601b6dee16","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90ad52836f72e2f7852fb75f077809ac9a53ed5f284f3ead098e38601b6dee16","first_computed_at":"2026-05-18T01:46:39.994279Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:39.994279Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yb0IH1nBwsbTBIC+593KzmTxH32Bk8vFlGFjQcsxFkajOkwkIAsnlFGuTPuXsa9saMKiMNU27T4ygW+GfOsLCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:39.994741Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.0196","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b4cc20c31c16902270b1271c2260be6ec04a4fd753456d364bbdb66d5d528bdc","sha256:4c812da77c96d0a3b59a871b5518a48ffb686defc0e68fe7019af5c75577fc1b"],"state_sha256":"483460f011fd3924e91a1e6b6315c8832fb115d21c4e152ea5ae85e7960da1d6"}