{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:7UKHFGTHA7H36S346TXF34SCJB","short_pith_number":"pith:7UKHFGTH","canonical_record":{"source":{"id":"1108.5648","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2011-08-29T16:51:11Z","cross_cats_sorted":["cs.DL"],"title_canon_sha256":"7727fef34bc6dc1a5b2d3cba24439f5e3924cc7232e8876295c8338a5c3c704f","abstract_canon_sha256":"93d021795489005d91b380b3a0134708de9b9b059b2824d305814854f0cc7186"},"schema_version":"1.0"},"canonical_sha256":"fd14729a6707cfbf4b7cf4ee5df242484f396d3817e9ead5b324b4dba52267e2","source":{"kind":"arxiv","id":"1108.5648","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.5648","created_at":"2026-05-18T04:14:37Z"},{"alias_kind":"arxiv_version","alias_value":"1108.5648v1","created_at":"2026-05-18T04:14:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.5648","created_at":"2026-05-18T04:14:37Z"},{"alias_kind":"pith_short_12","alias_value":"7UKHFGTHA7H3","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"7UKHFGTHA7H36S34","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"7UKHFGTH","created_at":"2026-05-18T12:26:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:7UKHFGTHA7H36S346TXF34SCJB","target":"record","payload":{"canonical_record":{"source":{"id":"1108.5648","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2011-08-29T16:51:11Z","cross_cats_sorted":["cs.DL"],"title_canon_sha256":"7727fef34bc6dc1a5b2d3cba24439f5e3924cc7232e8876295c8338a5c3c704f","abstract_canon_sha256":"93d021795489005d91b380b3a0134708de9b9b059b2824d305814854f0cc7186"},"schema_version":"1.0"},"canonical_sha256":"fd14729a6707cfbf4b7cf4ee5df242484f396d3817e9ead5b324b4dba52267e2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:14:37.071567Z","signature_b64":"BS+xWmjkzVMFbaojQnsDXrWljvhzjP6mWMdS2kjEJd9JYhMo5nizzg8z25MlVkkS4dlaZHl+vf/yHK3rE9LoCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd14729a6707cfbf4b7cf4ee5df242484f396d3817e9ead5b324b4dba52267e2","last_reissued_at":"2026-05-18T04:14:37.071167Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:14:37.071167Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1108.5648","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:14:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uuJfRqBmzIG/5Mqn3VigBm7w7SJR/+IZFjsIC5rVF6lmtVl99sSVDI3Ir48SOUIKtJmImVlIyUrDhuFv62SNCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T09:46:25.598580Z"},"content_sha256":"999a196eacac66ee3f5d1891dbc8f30e88e27c10921ed1f4edf4e50e5d9877b3","schema_version":"1.0","event_id":"sha256:999a196eacac66ee3f5d1891dbc8f30e88e27c10921ed1f4edf4e50e5d9877b3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:7UKHFGTHA7H36S346TXF34SCJB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the shoulders of students? The contribution of PhD students to the advancement of knowledge","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DL"],"primary_cat":"physics.soc-ph","authors_text":"Vincent Lariviere","submitted_at":"2011-08-29T16:51:11Z","abstract_excerpt":"Using the participation in peer reviewed publications of all doctoral students in Quebec over the 2000-2007 period this paper provides the first large scale analysis of their research effort. It shows that PhD students contribute to about a third of the publication output of the province, with doctoral students in the natural and medical sciences being present in a higher proportion of papers published than their colleagues of the social sciences and humanities. Collaboration is an important component of this socialization: disciplines in which student collaboration is higher are also those in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.5648","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:14:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NmYex+OWgQYSVlTGlCyMRadmIa5Zfs1sJrT5S5qm6nvJC/a0S+NgbXqEzJXDE1ht6F++mwQ1T5JxiDRqcqt7Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T09:46:25.599156Z"},"content_sha256":"09ab6474f5770fcc520bd2e8352835f91a582d91abf62acd4e46d61b89c04dce","schema_version":"1.0","event_id":"sha256:09ab6474f5770fcc520bd2e8352835f91a582d91abf62acd4e46d61b89c04dce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7UKHFGTHA7H36S346TXF34SCJB/bundle.json","state_url":"https://pith.science/pith/7UKHFGTHA7H36S346TXF34SCJB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7UKHFGTHA7H36S346TXF34SCJB/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-07T09:46:25Z","links":{"resolver":"https://pith.science/pith/7UKHFGTHA7H36S346TXF34SCJB","bundle":"https://pith.science/pith/7UKHFGTHA7H36S346TXF34SCJB/bundle.json","state":"https://pith.science/pith/7UKHFGTHA7H36S346TXF34SCJB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7UKHFGTHA7H36S346TXF34SCJB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:7UKHFGTHA7H36S346TXF34SCJB","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":"93d021795489005d91b380b3a0134708de9b9b059b2824d305814854f0cc7186","cross_cats_sorted":["cs.DL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2011-08-29T16:51:11Z","title_canon_sha256":"7727fef34bc6dc1a5b2d3cba24439f5e3924cc7232e8876295c8338a5c3c704f"},"schema_version":"1.0","source":{"id":"1108.5648","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.5648","created_at":"2026-05-18T04:14:37Z"},{"alias_kind":"arxiv_version","alias_value":"1108.5648v1","created_at":"2026-05-18T04:14:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.5648","created_at":"2026-05-18T04:14:37Z"},{"alias_kind":"pith_short_12","alias_value":"7UKHFGTHA7H3","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"7UKHFGTHA7H36S34","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"7UKHFGTH","created_at":"2026-05-18T12:26:22Z"}],"graph_snapshots":[{"event_id":"sha256:09ab6474f5770fcc520bd2e8352835f91a582d91abf62acd4e46d61b89c04dce","target":"graph","created_at":"2026-05-18T04:14:37Z","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":"Using the participation in peer reviewed publications of all doctoral students in Quebec over the 2000-2007 period this paper provides the first large scale analysis of their research effort. It shows that PhD students contribute to about a third of the publication output of the province, with doctoral students in the natural and medical sciences being present in a higher proportion of papers published than their colleagues of the social sciences and humanities. Collaboration is an important component of this socialization: disciplines in which student collaboration is higher are also those in","authors_text":"Vincent Lariviere","cross_cats":["cs.DL"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2011-08-29T16:51:11Z","title":"On the shoulders of students? The contribution of PhD students to the advancement of knowledge"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.5648","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":"sha256:999a196eacac66ee3f5d1891dbc8f30e88e27c10921ed1f4edf4e50e5d9877b3","target":"record","created_at":"2026-05-18T04:14:37Z","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":"93d021795489005d91b380b3a0134708de9b9b059b2824d305814854f0cc7186","cross_cats_sorted":["cs.DL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2011-08-29T16:51:11Z","title_canon_sha256":"7727fef34bc6dc1a5b2d3cba24439f5e3924cc7232e8876295c8338a5c3c704f"},"schema_version":"1.0","source":{"id":"1108.5648","kind":"arxiv","version":1}},"canonical_sha256":"fd14729a6707cfbf4b7cf4ee5df242484f396d3817e9ead5b324b4dba52267e2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd14729a6707cfbf4b7cf4ee5df242484f396d3817e9ead5b324b4dba52267e2","first_computed_at":"2026-05-18T04:14:37.071167Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:14:37.071167Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BS+xWmjkzVMFbaojQnsDXrWljvhzjP6mWMdS2kjEJd9JYhMo5nizzg8z25MlVkkS4dlaZHl+vf/yHK3rE9LoCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:14:37.071567Z","signed_message":"canonical_sha256_bytes"},"source_id":"1108.5648","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:999a196eacac66ee3f5d1891dbc8f30e88e27c10921ed1f4edf4e50e5d9877b3","sha256:09ab6474f5770fcc520bd2e8352835f91a582d91abf62acd4e46d61b89c04dce"],"state_sha256":"62880ac07dbd0d56d28a7126a71c15bbc4cf9be28cd3c3f77fa8398580200a82"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o4sgJle8G1+sYAEL9MHoJYVxBbr5TTsabwv7oT1lxBHls1X3MW031IsrXC5jZNaEO4d5FcGX7zDQnCY0EeP8DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T09:46:25.602227Z","bundle_sha256":"cef0778a1e72f1fe2b07ea6edcc5bffea6d9ff90ce030982b4d9238f508d4702"}}