{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:TEFURLQRCTP4VEASMRB652GEOF","short_pith_number":"pith:TEFURLQR","canonical_record":{"source":{"id":"1207.6038","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2012-07-25T16:02:42Z","cross_cats_sorted":["physics.geo-ph"],"title_canon_sha256":"8a52c0bd477a3e32385e96075751b66c729c7ead89deb3e4a8e6b163e272d5ff","abstract_canon_sha256":"736d6c3c5ca44e6e6e7975087304fb75d5463b54a09bc84803abc686a5ff261c"},"schema_version":"1.0"},"canonical_sha256":"990b48ae1114dfca90126443eee8c4716e647346a41be275aa54b4b18fba383c","source":{"kind":"arxiv","id":"1207.6038","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.6038","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"arxiv_version","alias_value":"1207.6038v2","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.6038","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"pith_short_12","alias_value":"TEFURLQRCTP4","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"TEFURLQRCTP4VEAS","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"TEFURLQR","created_at":"2026-05-18T12:27:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:TEFURLQRCTP4VEASMRB652GEOF","target":"record","payload":{"canonical_record":{"source":{"id":"1207.6038","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2012-07-25T16:02:42Z","cross_cats_sorted":["physics.geo-ph"],"title_canon_sha256":"8a52c0bd477a3e32385e96075751b66c729c7ead89deb3e4a8e6b163e272d5ff","abstract_canon_sha256":"736d6c3c5ca44e6e6e7975087304fb75d5463b54a09bc84803abc686a5ff261c"},"schema_version":"1.0"},"canonical_sha256":"990b48ae1114dfca90126443eee8c4716e647346a41be275aa54b4b18fba383c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:37:08.390741Z","signature_b64":"yfAZhtxeGQ2oDtPiQlfP4/Bfu4G+w0NawoUqADLdwjH9tDRQOlfucAJwYjc/YbUSJf3xX2/eMRPYFF/cak0zBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"990b48ae1114dfca90126443eee8c4716e647346a41be275aa54b4b18fba383c","last_reissued_at":"2026-05-18T03:37:08.390184Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:37:08.390184Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.6038","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:37:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8nt1YTHpqIyPi/5M3GCf+M99B7+Bqgxtf1HUl37oPrPXboveDeJXC9KyElcg1yWoozu2e7NhJGzKVxImGazBDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T08:45:25.902877Z"},"content_sha256":"5024b763d97639d7a73c8caf8d1a5bfc204fb747c06565042a30a5a381b43a1d","schema_version":"1.0","event_id":"sha256:5024b763d97639d7a73c8caf8d1a5bfc204fb747c06565042a30a5a381b43a1d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:TEFURLQRCTP4VEASMRB652GEOF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reliability measures of second order semi-Markov chain applied to wind energy production","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.geo-ph"],"primary_cat":"physics.data-an","authors_text":"Filippo Petroni, Flavio Prattico, Guglielmo D'Amico","submitted_at":"2012-07-25T16:02:42Z","abstract_excerpt":"In this paper we consider the problem of wind energy production by using a second order semi-Markov chain in state and duration as a model of wind speed. The model used in this paper is based on our previous work where we have showed the ability of second order semi-Markov process in reproducing statistical features of wind speed. Here we briefly present the mathematical model and describe the data and technical characteristics of a commercial wind turbine (Aircon HAWT-10kW). We show how, by using our model, it is possible to compute some of the main dependability measures such as reliability,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.6038","kind":"arxiv","version":2},"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":"2026-05-18T03:37:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EHt1yUYMUETpCkNPp//PRMWdE4p1WWqca94ws2IXUZmlajE9cdu2PP1MOKpgVxAjn+BwaEtKWB8oJ4v/dvCLAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T08:45:25.903212Z"},"content_sha256":"87678f413214dcdfebd5009904f2b970bbe8a9b6f3ef6790cd5eee27b0d3a307","schema_version":"1.0","event_id":"sha256:87678f413214dcdfebd5009904f2b970bbe8a9b6f3ef6790cd5eee27b0d3a307"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TEFURLQRCTP4VEASMRB652GEOF/bundle.json","state_url":"https://pith.science/pith/TEFURLQRCTP4VEASMRB652GEOF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TEFURLQRCTP4VEASMRB652GEOF/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":"2026-06-27T08:45:25Z","links":{"resolver":"https://pith.science/pith/TEFURLQRCTP4VEASMRB652GEOF","bundle":"https://pith.science/pith/TEFURLQRCTP4VEASMRB652GEOF/bundle.json","state":"https://pith.science/pith/TEFURLQRCTP4VEASMRB652GEOF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TEFURLQRCTP4VEASMRB652GEOF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:TEFURLQRCTP4VEASMRB652GEOF","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":"736d6c3c5ca44e6e6e7975087304fb75d5463b54a09bc84803abc686a5ff261c","cross_cats_sorted":["physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2012-07-25T16:02:42Z","title_canon_sha256":"8a52c0bd477a3e32385e96075751b66c729c7ead89deb3e4a8e6b163e272d5ff"},"schema_version":"1.0","source":{"id":"1207.6038","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.6038","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"arxiv_version","alias_value":"1207.6038v2","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.6038","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"pith_short_12","alias_value":"TEFURLQRCTP4","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"TEFURLQRCTP4VEAS","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"TEFURLQR","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:87678f413214dcdfebd5009904f2b970bbe8a9b6f3ef6790cd5eee27b0d3a307","target":"graph","created_at":"2026-05-18T03:37:08Z","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":"In this paper we consider the problem of wind energy production by using a second order semi-Markov chain in state and duration as a model of wind speed. The model used in this paper is based on our previous work where we have showed the ability of second order semi-Markov process in reproducing statistical features of wind speed. Here we briefly present the mathematical model and describe the data and technical characteristics of a commercial wind turbine (Aircon HAWT-10kW). We show how, by using our model, it is possible to compute some of the main dependability measures such as reliability,","authors_text":"Filippo Petroni, Flavio Prattico, Guglielmo D'Amico","cross_cats":["physics.geo-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2012-07-25T16:02:42Z","title":"Reliability measures of second order semi-Markov chain applied to wind energy production"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.6038","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":"sha256:5024b763d97639d7a73c8caf8d1a5bfc204fb747c06565042a30a5a381b43a1d","target":"record","created_at":"2026-05-18T03:37:08Z","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":"736d6c3c5ca44e6e6e7975087304fb75d5463b54a09bc84803abc686a5ff261c","cross_cats_sorted":["physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2012-07-25T16:02:42Z","title_canon_sha256":"8a52c0bd477a3e32385e96075751b66c729c7ead89deb3e4a8e6b163e272d5ff"},"schema_version":"1.0","source":{"id":"1207.6038","kind":"arxiv","version":2}},"canonical_sha256":"990b48ae1114dfca90126443eee8c4716e647346a41be275aa54b4b18fba383c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"990b48ae1114dfca90126443eee8c4716e647346a41be275aa54b4b18fba383c","first_computed_at":"2026-05-18T03:37:08.390184Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:37:08.390184Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yfAZhtxeGQ2oDtPiQlfP4/Bfu4G+w0NawoUqADLdwjH9tDRQOlfucAJwYjc/YbUSJf3xX2/eMRPYFF/cak0zBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:37:08.390741Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.6038","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5024b763d97639d7a73c8caf8d1a5bfc204fb747c06565042a30a5a381b43a1d","sha256:87678f413214dcdfebd5009904f2b970bbe8a9b6f3ef6790cd5eee27b0d3a307"],"state_sha256":"a4d0e1bdf4e7f153ad0cb361c93c0902f47edac1a88c03c820d99dc016273789"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BFpIcOzie7nzEN4305odcquJlOj3c1Z9NSHL/bDugNJdjNJhNfZ124eOW2Ey6tzpLFLIYld1kcFNtB/pZ7CNBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T08:45:25.905080Z","bundle_sha256":"7297b37f8f54d914a3d7bd5e3fa28998570d340eb48c21162d4e9e7d069db45a"}}