{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:WBK3J2LIB6QZSSL47GZ6IH3YZE","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":"77580da171b87746ed13267a412f050b93139b7071161f7353151c34cf3d51f7","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2017-11-15T13:21:57Z","title_canon_sha256":"7317fc8edb2d827b3b5e9f0d135fe1fcf2e0b493717d06b538402a8ce4041c09"},"schema_version":"1.0","source":{"id":"1712.02613","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.02613","created_at":"2026-05-17T23:49:27Z"},{"alias_kind":"arxiv_version","alias_value":"1712.02613v2","created_at":"2026-05-17T23:49:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.02613","created_at":"2026-05-17T23:49:27Z"},{"alias_kind":"pith_short_12","alias_value":"WBK3J2LIB6QZ","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WBK3J2LIB6QZSSL4","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WBK3J2LI","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:9d20d15475c354961e792770568bccd02d2a565acb9c9e1802e0ce42c4cdd74a","target":"graph","created_at":"2026-05-17T23:49:27Z","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":"Existing optimization methods are used to calculate the upper-bounds on radiation efficiency with and without the constraint on self-resonance. These bounds are used for the design and assessment of small electric-dipole-type antennas. We demonstrate that the assumption of lossless, lumped, external tuning skews the true nature of radiation efficiency bounds when practical material characteristics are used in the tuning network. A major result is that, when realistic (e.g., finite conductivity) materials are used, small antenna systems exhibit dissipation factors which scale as $(ka)^{-4}$, ra","authors_text":"K. Schab, L. Jelinek, M. Capek","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2017-11-15T13:21:57Z","title":"The Radiation Efficiency Cost of Resonance Tuning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.02613","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":"sha256:685a5904275d5ae3b09c0af9f3a851a1ae395bfb2ab0c0d9eedd58be1b763af3","target":"record","created_at":"2026-05-17T23:49:27Z","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":"77580da171b87746ed13267a412f050b93139b7071161f7353151c34cf3d51f7","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2017-11-15T13:21:57Z","title_canon_sha256":"7317fc8edb2d827b3b5e9f0d135fe1fcf2e0b493717d06b538402a8ce4041c09"},"schema_version":"1.0","source":{"id":"1712.02613","kind":"arxiv","version":2}},"canonical_sha256":"b055b4e9680fa199497cf9b3e41f78c916b7e6743d8d4ceacb6b1ab967132fe9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b055b4e9680fa199497cf9b3e41f78c916b7e6743d8d4ceacb6b1ab967132fe9","first_computed_at":"2026-05-17T23:49:27.942873Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:27.942873Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ucGj9SjI47/+xC3n7hyQzHQRzEOGfxmM9Hwy3kYf7IS7zqnk9z1BOZMwcyY0Iy6naaYXvyoNB1i62732rFICAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:27.943544Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.02613","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:685a5904275d5ae3b09c0af9f3a851a1ae395bfb2ab0c0d9eedd58be1b763af3","sha256:9d20d15475c354961e792770568bccd02d2a565acb9c9e1802e0ce42c4cdd74a"],"state_sha256":"549fc8360b29d2799aa5d689c4b0a485dffb6be49313c69c3ad9dc81013f7d28"}