{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:GIPMRY4SJRX4IR3WV3A4TBAFI2","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":"411b6a79f9b6264adf2887f03955ee019cd72081bfa8c6d52e73483cbf56b3b2","cross_cats_sorted":["stat.TH"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.ST","submitted_at":"2014-04-07T16:29:24Z","title_canon_sha256":"fd9f10bad85431448b192058ca15ac6f2ff3a3f65e8ddc51bab5de0bfccfb00e"},"schema_version":"1.0","source":{"id":"1404.1839","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.1839","created_at":"2026-05-18T01:36:38Z"},{"alias_kind":"arxiv_version","alias_value":"1404.1839v2","created_at":"2026-05-18T01:36:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.1839","created_at":"2026-05-18T01:36:38Z"},{"alias_kind":"pith_short_12","alias_value":"GIPMRY4SJRX4","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"GIPMRY4SJRX4IR3W","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"GIPMRY4S","created_at":"2026-05-18T12:28:30Z"}],"graph_snapshots":[{"event_id":"sha256:5995a98ad0260eaefb71b38a266bd12f502c155da4786a8228c67aadcdce7277","target":"graph","created_at":"2026-05-18T01:36:38Z","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":"The understanding of methane emission and methane absorption plays a central role both in the atmosphere and on the surface of the Earth. Several important ecological processes, e.g., ebullition of methane and its natural microergodicity request better designs for observations in order to decrease variability in parameter estimation. Thus, a crucial fact, before the measurements are taken, is to give an optimal design of the sites where observations should be collected in order to stabilize the variability of estimators. In this paper we introduce a realistic parametric model of covariance and","authors_text":"Kinga Sikolya, Milan Stehl\\'ik, S\\'andor Baran","cross_cats":["stat.TH"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.ST","submitted_at":"2014-04-07T16:29:24Z","title":"Optimal designs for the methane flux in troposphere"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.1839","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:a152aa412becaeedcf38805f19d9d733e537eb441bba61da9407d2f1c9c32c52","target":"record","created_at":"2026-05-18T01:36:38Z","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":"411b6a79f9b6264adf2887f03955ee019cd72081bfa8c6d52e73483cbf56b3b2","cross_cats_sorted":["stat.TH"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.ST","submitted_at":"2014-04-07T16:29:24Z","title_canon_sha256":"fd9f10bad85431448b192058ca15ac6f2ff3a3f65e8ddc51bab5de0bfccfb00e"},"schema_version":"1.0","source":{"id":"1404.1839","kind":"arxiv","version":2}},"canonical_sha256":"321ec8e3924c6fc44776aec1c98405469c18204e9434e2671601e75bfb560121","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"321ec8e3924c6fc44776aec1c98405469c18204e9434e2671601e75bfb560121","first_computed_at":"2026-05-18T01:36:38.904164Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:38.904164Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q+xdMpFp2o41D4XAOCCWHEZ+nQ6GJBp++spBEUb254Jbt5KShkDYPCLwZfmj3T2Zt5SjRjJUBdwYiXTY4xNaCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:38.904813Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.1839","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a152aa412becaeedcf38805f19d9d733e537eb441bba61da9407d2f1c9c32c52","sha256:5995a98ad0260eaefb71b38a266bd12f502c155da4786a8228c67aadcdce7277"],"state_sha256":"f6868070517133cba025b87bc3f81ff892a904c11016d704c22ae0f8994b0884"}