{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:PEAXRBMCATEWO47ZFB624TB45N","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":"cae2da4eb2c6ed0022e650d1adaedb2ef3552b3fb68ce2cae56babddfb815dca","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2017-09-15T19:48:55Z","title_canon_sha256":"8ab4d833735e9db5dde0be329a826c9df7781b43153a6a825833d382e942e558"},"schema_version":"1.0","source":{"id":"1709.05378","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.05378","created_at":"2026-05-18T00:28:14Z"},{"alias_kind":"arxiv_version","alias_value":"1709.05378v1","created_at":"2026-05-18T00:28:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.05378","created_at":"2026-05-18T00:28:14Z"},{"alias_kind":"pith_short_12","alias_value":"PEAXRBMCATEW","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PEAXRBMCATEWO47Z","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PEAXRBMC","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:10fd0b75fb160c76dbd7cd5f2437a763c69ba22e099a959214af4573ea84837a","target":"graph","created_at":"2026-05-18T00:28:14Z","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":"We investigate students' sense of ownership of multiweek final projects in an upper-division optics lab course. Using a multiple case study approach, we describe three student projects in detail. Within-case analyses focused on identifying key issues in each project, and constructing chronological descriptions of those events. Cross-case analysis focused on identifying emergent themes with respect to five dimensions of project ownership: student agency, instructor mentorship, peer collaboration, interest and value, and affective responses. Our within- and cross-case analyses yielded three majo","authors_text":"Dimitri R. Dounas-Frazer, H. J. Lewandowski, Jacob T. Stanley","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2017-09-15T19:48:55Z","title":"Student ownership of projects in an upper-division optics laboratory course: A multiple case study of successful experiences"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.05378","kind":"arxiv","version":1},"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":"sha256:84fb0cfc3e18ab3afec49d81090fa46cf7f185cfa8f4702e1fe9f1a4f5db36de","target":"record","created_at":"2026-05-18T00:28:14Z","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":"cae2da4eb2c6ed0022e650d1adaedb2ef3552b3fb68ce2cae56babddfb815dca","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2017-09-15T19:48:55Z","title_canon_sha256":"8ab4d833735e9db5dde0be329a826c9df7781b43153a6a825833d382e942e558"},"schema_version":"1.0","source":{"id":"1709.05378","kind":"arxiv","version":1}},"canonical_sha256":"790178858204c96773f9287dae4c3ceb7f923560d90401c98e2706105c381d47","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"790178858204c96773f9287dae4c3ceb7f923560d90401c98e2706105c381d47","first_computed_at":"2026-05-18T00:28:14.096687Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:28:14.096687Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pU12ZXJuyp8a6qSPNqaZBZzgHeTuQNS2J39sii9ulHu3tIhnG4WpKOKCBQ5UY7eZDlbfIFxAQ3uklNijU6dLBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:28:14.097390Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.05378","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:84fb0cfc3e18ab3afec49d81090fa46cf7f185cfa8f4702e1fe9f1a4f5db36de","sha256:10fd0b75fb160c76dbd7cd5f2437a763c69ba22e099a959214af4573ea84837a"],"state_sha256":"36ea6b117b08cd107114ef285e51867b06cef084bba62ac27c4adf4c7797f675"}