{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:SFC54RS4EP7JMY5MOOCIR4LSKA","short_pith_number":"pith:SFC54RS4","canonical_record":{"source":{"id":"1805.02544","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2018-05-07T14:31:54Z","cross_cats_sorted":[],"title_canon_sha256":"8cf4fbd1bb6cf6907fcd8c05088b6b7b027cf156ad6afce2c54b5731fa4e8bfd","abstract_canon_sha256":"ee3d19c0e81333e93f46a69af6202f13b684e7f7cdb44fb53cef8a83e81267c1"},"schema_version":"1.0"},"canonical_sha256":"9145de465c23fe9663ac738488f1725016480150b0d43cb995b2dab6b08f86bc","source":{"kind":"arxiv","id":"1805.02544","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.02544","created_at":"2026-05-18T00:16:39Z"},{"alias_kind":"arxiv_version","alias_value":"1805.02544v1","created_at":"2026-05-18T00:16:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.02544","created_at":"2026-05-18T00:16:39Z"},{"alias_kind":"pith_short_12","alias_value":"SFC54RS4EP7J","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SFC54RS4EP7JMY5M","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SFC54RS4","created_at":"2026-05-18T12:32:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:SFC54RS4EP7JMY5MOOCIR4LSKA","target":"record","payload":{"canonical_record":{"source":{"id":"1805.02544","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2018-05-07T14:31:54Z","cross_cats_sorted":[],"title_canon_sha256":"8cf4fbd1bb6cf6907fcd8c05088b6b7b027cf156ad6afce2c54b5731fa4e8bfd","abstract_canon_sha256":"ee3d19c0e81333e93f46a69af6202f13b684e7f7cdb44fb53cef8a83e81267c1"},"schema_version":"1.0"},"canonical_sha256":"9145de465c23fe9663ac738488f1725016480150b0d43cb995b2dab6b08f86bc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:16:39.668949Z","signature_b64":"F/sJHQ9I3ZdT7ym3YjgLXJVMrmYD/6x4RjB8+KQUPgPR5d0+kN6rVfgNqwGa/FHH04gR7Jr8/ry9AdEvtYvhDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9145de465c23fe9663ac738488f1725016480150b0d43cb995b2dab6b08f86bc","last_reissued_at":"2026-05-18T00:16:39.668384Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:16:39.668384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.02544","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":"2026-05-18T00:16:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kb4QN/kurKbdD6A4Y6em7oE9hXQt5IKGHMVj28ch2Mj95xotY7O7HnjYSWL8dXUpiLTylMAcFwWYnsc7mmS9Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:51:39.037967Z"},"content_sha256":"2c55ab9e6a192f2a49471ce9441a10d7751815f331b350a839e518384cca49c9","schema_version":"1.0","event_id":"sha256:2c55ab9e6a192f2a49471ce9441a10d7751815f331b350a839e518384cca49c9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:SFC54RS4EP7JMY5MOOCIR4LSKA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Need for Sleep: the Impact of a Night of Sleep Deprivation on Novice Developers' Performance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SE","authors_text":"Davide Fucci, Giuseppe Scanniello, Natalia Juristo, Simone Romano","submitted_at":"2018-05-07T14:31:54Z","abstract_excerpt":"We present a quasi-experiment to investigate whether, and to what extent, sleep deprivation impacts the performance of novice software developers using the agile practice of test-first development (TFD). We recruited 45 undergraduates and asked them to tackle a programming task. Among the participants, 23 agreed to stay awake the night before carrying out the task, while 22 slept usually. We analyzed the quality (i.e., the functional correctness) of the implementations delivered by the participants in both groups, their engagement in writing source code (i.e., the amount of activities performe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.02544","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":"2026-05-18T00:16:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QSniQFARa1B5bKM6upGnbNjUpV3BnY7DFMOp/kC2S23hQ4xIGGSUfAuYnLkYR9OFHNb1lRYc3goXZx7SfIXjBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:51:39.038646Z"},"content_sha256":"8799666191827463654990dbc7f0cc331acc37ceb20d2a380d9cd54f2e319ed5","schema_version":"1.0","event_id":"sha256:8799666191827463654990dbc7f0cc331acc37ceb20d2a380d9cd54f2e319ed5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SFC54RS4EP7JMY5MOOCIR4LSKA/bundle.json","state_url":"https://pith.science/pith/SFC54RS4EP7JMY5MOOCIR4LSKA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SFC54RS4EP7JMY5MOOCIR4LSKA/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":"2026-05-25T18:51:39Z","links":{"resolver":"https://pith.science/pith/SFC54RS4EP7JMY5MOOCIR4LSKA","bundle":"https://pith.science/pith/SFC54RS4EP7JMY5MOOCIR4LSKA/bundle.json","state":"https://pith.science/pith/SFC54RS4EP7JMY5MOOCIR4LSKA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SFC54RS4EP7JMY5MOOCIR4LSKA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SFC54RS4EP7JMY5MOOCIR4LSKA","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":"ee3d19c0e81333e93f46a69af6202f13b684e7f7cdb44fb53cef8a83e81267c1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2018-05-07T14:31:54Z","title_canon_sha256":"8cf4fbd1bb6cf6907fcd8c05088b6b7b027cf156ad6afce2c54b5731fa4e8bfd"},"schema_version":"1.0","source":{"id":"1805.02544","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.02544","created_at":"2026-05-18T00:16:39Z"},{"alias_kind":"arxiv_version","alias_value":"1805.02544v1","created_at":"2026-05-18T00:16:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.02544","created_at":"2026-05-18T00:16:39Z"},{"alias_kind":"pith_short_12","alias_value":"SFC54RS4EP7J","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SFC54RS4EP7JMY5M","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SFC54RS4","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:8799666191827463654990dbc7f0cc331acc37ceb20d2a380d9cd54f2e319ed5","target":"graph","created_at":"2026-05-18T00:16:39Z","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":"We present a quasi-experiment to investigate whether, and to what extent, sleep deprivation impacts the performance of novice software developers using the agile practice of test-first development (TFD). We recruited 45 undergraduates and asked them to tackle a programming task. Among the participants, 23 agreed to stay awake the night before carrying out the task, while 22 slept usually. We analyzed the quality (i.e., the functional correctness) of the implementations delivered by the participants in both groups, their engagement in writing source code (i.e., the amount of activities performe","authors_text":"Davide Fucci, Giuseppe Scanniello, Natalia Juristo, Simone Romano","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2018-05-07T14:31:54Z","title":"Need for Sleep: the Impact of a Night of Sleep Deprivation on Novice Developers' Performance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.02544","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":"sha256:2c55ab9e6a192f2a49471ce9441a10d7751815f331b350a839e518384cca49c9","target":"record","created_at":"2026-05-18T00:16:39Z","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":"ee3d19c0e81333e93f46a69af6202f13b684e7f7cdb44fb53cef8a83e81267c1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2018-05-07T14:31:54Z","title_canon_sha256":"8cf4fbd1bb6cf6907fcd8c05088b6b7b027cf156ad6afce2c54b5731fa4e8bfd"},"schema_version":"1.0","source":{"id":"1805.02544","kind":"arxiv","version":1}},"canonical_sha256":"9145de465c23fe9663ac738488f1725016480150b0d43cb995b2dab6b08f86bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9145de465c23fe9663ac738488f1725016480150b0d43cb995b2dab6b08f86bc","first_computed_at":"2026-05-18T00:16:39.668384Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:39.668384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F/sJHQ9I3ZdT7ym3YjgLXJVMrmYD/6x4RjB8+KQUPgPR5d0+kN6rVfgNqwGa/FHH04gR7Jr8/ry9AdEvtYvhDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:39.668949Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.02544","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2c55ab9e6a192f2a49471ce9441a10d7751815f331b350a839e518384cca49c9","sha256:8799666191827463654990dbc7f0cc331acc37ceb20d2a380d9cd54f2e319ed5"],"state_sha256":"f9176262470d83d5aa9d0dbdb1dd2759a7108505b903646ad72466cd6a0a5db2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZWGYMW3gMcMCFCgmH4F+gLQoYmD6wG46Hm/ED9HgTVRy78N+ioxyzbMHu4R6QO17CcCJ/RHp09dFP4zxzK8eBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:51:39.042654Z","bundle_sha256":"3355a91c381cad6325f47e04635d76f149d49d6ab2d5a9e2109425f8299cda06"}}