{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:EB3ZSEKYG3SCTJDTWTJ333K6PA","short_pith_number":"pith:EB3ZSEKY","canonical_record":{"source":{"id":"1907.01477","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2019-06-27T12:27:13Z","cross_cats_sorted":[],"title_canon_sha256":"e1f39a5dd70a902ad18464abd5683792a9f97db1278cf79960b6a119ea00f305","abstract_canon_sha256":"35e0dc576267aa0e64131df011346051bcb9c9baef992da7d694e5ae02a2fb42"},"schema_version":"1.0"},"canonical_sha256":"207799115836e429a473b4d3bded5e78215d9a454d36549969bb54d2095025ce","source":{"kind":"arxiv","id":"1907.01477","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.01477","created_at":"2026-05-17T23:41:40Z"},{"alias_kind":"arxiv_version","alias_value":"1907.01477v1","created_at":"2026-05-17T23:41:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.01477","created_at":"2026-05-17T23:41:40Z"},{"alias_kind":"pith_short_12","alias_value":"EB3ZSEKYG3SC","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"EB3ZSEKYG3SCTJDT","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"EB3ZSEKY","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:EB3ZSEKYG3SCTJDTWTJ333K6PA","target":"record","payload":{"canonical_record":{"source":{"id":"1907.01477","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2019-06-27T12:27:13Z","cross_cats_sorted":[],"title_canon_sha256":"e1f39a5dd70a902ad18464abd5683792a9f97db1278cf79960b6a119ea00f305","abstract_canon_sha256":"35e0dc576267aa0e64131df011346051bcb9c9baef992da7d694e5ae02a2fb42"},"schema_version":"1.0"},"canonical_sha256":"207799115836e429a473b4d3bded5e78215d9a454d36549969bb54d2095025ce","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:41:40.291198Z","signature_b64":"mXhgABtDqnow4d6tNbv9Rf9ZZj2N6/Bcb45exe4GM7tuzlh75gbZg0LOVZfZKpeyMYEwGZ/h6qTy0AV81tNuBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"207799115836e429a473b4d3bded5e78215d9a454d36549969bb54d2095025ce","last_reissued_at":"2026-05-17T23:41:40.290555Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:41:40.290555Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.01477","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":"2026-05-17T23:41:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HTRtLHvOkTemwZttq8a6CV9xfQqP7kwPXbZYdgzSthKgaU0fh/pHsUTDtBLFklXxvwP7OVY76LKOMiuTZuhuCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T20:29:02.808471Z"},"content_sha256":"1548ef9d1d103bd1e9ea5c5ddd03c70d1ea300818de314ed977918897f5ddba1","schema_version":"1.0","event_id":"sha256:1548ef9d1d103bd1e9ea5c5ddd03c70d1ea300818de314ed977918897f5ddba1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:EB3ZSEKYG3SCTJDTWTJ333K6PA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Taking drift-diffusion analysis from the study of turbulent flows to the study of particulate matter smog and air pollutants dynamics","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.ao-ph","authors_text":"L. Ingsrisawang, T.D. Frank, T. Varapongpisan","submitted_at":"2019-06-27T12:27:13Z","abstract_excerpt":"Drift-diffusion analysis has been introduced in physics as a method to study turbulent flows. In the current study, it is proposed to use the method to identify underlying dynamical models of particulate matter smog, ozone and nitrogen dioxide concentrations. Data from Chiangmai are considered, which is a major city in the northern part of Thailand that recently has witnessed a dramatic increase of hospitalization that are assumed to be related to extreme air pollution levels. Three variants of the drift-diffusion analysis method (kernel-density, binning, linear approximation) are considered. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.01477","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":"2026-05-17T23:41:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X7Cz/MS2A/roaQ4Xfpm0hvxuAQAXi32tg9mA/1fwq8684mKDaCtNSKgwniScJvlByNo5IkM8dbS2rL57ZSewDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T20:29:02.809125Z"},"content_sha256":"7372936016a72a62281cc15fe978b6a12339f527a1d0d5b32f38653b87882c1e","schema_version":"1.0","event_id":"sha256:7372936016a72a62281cc15fe978b6a12339f527a1d0d5b32f38653b87882c1e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EB3ZSEKYG3SCTJDTWTJ333K6PA/bundle.json","state_url":"https://pith.science/pith/EB3ZSEKYG3SCTJDTWTJ333K6PA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EB3ZSEKYG3SCTJDTWTJ333K6PA/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":"2026-05-31T20:29:02Z","links":{"resolver":"https://pith.science/pith/EB3ZSEKYG3SCTJDTWTJ333K6PA","bundle":"https://pith.science/pith/EB3ZSEKYG3SCTJDTWTJ333K6PA/bundle.json","state":"https://pith.science/pith/EB3ZSEKYG3SCTJDTWTJ333K6PA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EB3ZSEKYG3SCTJDTWTJ333K6PA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:EB3ZSEKYG3SCTJDTWTJ333K6PA","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":"35e0dc576267aa0e64131df011346051bcb9c9baef992da7d694e5ae02a2fb42","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2019-06-27T12:27:13Z","title_canon_sha256":"e1f39a5dd70a902ad18464abd5683792a9f97db1278cf79960b6a119ea00f305"},"schema_version":"1.0","source":{"id":"1907.01477","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.01477","created_at":"2026-05-17T23:41:40Z"},{"alias_kind":"arxiv_version","alias_value":"1907.01477v1","created_at":"2026-05-17T23:41:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.01477","created_at":"2026-05-17T23:41:40Z"},{"alias_kind":"pith_short_12","alias_value":"EB3ZSEKYG3SC","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"EB3ZSEKYG3SCTJDT","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"EB3ZSEKY","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:7372936016a72a62281cc15fe978b6a12339f527a1d0d5b32f38653b87882c1e","target":"graph","created_at":"2026-05-17T23:41:40Z","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":"Drift-diffusion analysis has been introduced in physics as a method to study turbulent flows. In the current study, it is proposed to use the method to identify underlying dynamical models of particulate matter smog, ozone and nitrogen dioxide concentrations. Data from Chiangmai are considered, which is a major city in the northern part of Thailand that recently has witnessed a dramatic increase of hospitalization that are assumed to be related to extreme air pollution levels. Three variants of the drift-diffusion analysis method (kernel-density, binning, linear approximation) are considered. ","authors_text":"L. Ingsrisawang, T.D. Frank, T. Varapongpisan","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2019-06-27T12:27:13Z","title":"Taking drift-diffusion analysis from the study of turbulent flows to the study of particulate matter smog and air pollutants dynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.01477","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":"sha256:1548ef9d1d103bd1e9ea5c5ddd03c70d1ea300818de314ed977918897f5ddba1","target":"record","created_at":"2026-05-17T23:41:40Z","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":"35e0dc576267aa0e64131df011346051bcb9c9baef992da7d694e5ae02a2fb42","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2019-06-27T12:27:13Z","title_canon_sha256":"e1f39a5dd70a902ad18464abd5683792a9f97db1278cf79960b6a119ea00f305"},"schema_version":"1.0","source":{"id":"1907.01477","kind":"arxiv","version":1}},"canonical_sha256":"207799115836e429a473b4d3bded5e78215d9a454d36549969bb54d2095025ce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"207799115836e429a473b4d3bded5e78215d9a454d36549969bb54d2095025ce","first_computed_at":"2026-05-17T23:41:40.290555Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:40.290555Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mXhgABtDqnow4d6tNbv9Rf9ZZj2N6/Bcb45exe4GM7tuzlh75gbZg0LOVZfZKpeyMYEwGZ/h6qTy0AV81tNuBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:40.291198Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.01477","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1548ef9d1d103bd1e9ea5c5ddd03c70d1ea300818de314ed977918897f5ddba1","sha256:7372936016a72a62281cc15fe978b6a12339f527a1d0d5b32f38653b87882c1e"],"state_sha256":"6c6f0db502b9c0d297f489673744f4aaa8c1d70598d8ce2feab439edf5ea52a1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dG+kqThofNAKlqkg7sDogkWpgROSGLK58M1WzoO2heQxYrZj/vmlQ4ByAfBGbOXWKbGOCO0QNQTpVHRqyh2cAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T20:29:02.813105Z","bundle_sha256":"2287ec1c421a0aa744163c25b1df1ec4c0487145ae649c9ae7965bdcfd1b26f6"}}